1.
Maputo
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Maputo, known as Lourenço Marques before independence, is the capital and largest city of Mozambique. It is known as the City of Acacias, in reference to acacia trees commonly found along its avenues, today, it is a port city, with its economy centered on the harbour. According to the 2007 census, the population is 1,766,184, cotton, sugar, chromite, sisal, copra, and hardwood are the chief exports. The city manufactures cement, pottery, furniture, shoes, the city is surrounded by Maputo Province, but is administered as its own province. They explored the lower courses of the rivers emptying their waters into Delagoa Bay, the forts and trading stations that the Portuguese established, abandoned and reoccupied on the north bank of the river, were all called Lourenço Marques. The existing town dates from about 1850, the settlement having been entirely destroyed by the natives. The town developed around a Portuguese fortress completed in 1787, on the 9th of December 1876, Lourenço Marques was elevated to the category of village and on the 10th of November 1887 it became a city. The Luso-British conflict for the possession of Lourenço Marques ends on the 24th of July 1875 with the ruling by the French President Patrice Mac-Mahon in favor of Portugal. The growing importance of the Transvaal led, however, to greater interest being taken back in Portugal in the development of a port. A commission was sent by the Portuguese government in 1876 to drain the land near the settlement, to plant the blue gum tree, and to build a hospital. A city since 1887, it superseded the Island of Mozambique as the capital of Mozambique in 1898, in 1895, construction of a railroad to Pretoria, South Africa, caused the citys population to grow. It was served by British, Portuguese, and German liners, and the majority of its goods were shipped at Southampton, Lisbon. Portuguese, Islamic, Indian and Chinese communities managed to achieve great prosperity —, before Mozambiques independence in 1975, thousands of tourists from South Africa and Rhodesia frequented the city and its scenic beaches, high-quality hotels, restaurants, casinos, and brothels. The Mozambique Liberation Front, or FRELIMO, formed in Tanzania in 1962 and led by Eduardo Mondlane, the Mozambican War of Independence lasted over 10 years, ending only in 1974 when the Estado Novo regime was overthrown in Lisbon by a leftist military coup — the Carnation Revolution. The new government of Portugal granted independence to all Portuguese overseas territories, the words Aqui é Portugal were once inscribed on the walkway of its municipal building. The Peoples Republic of Mozambique was proclaimed on 25 June 1975 in accordance with the Lusaka Accord signed in September 1974, however, after independence, the citys name was changed to Maputo. After the independence, the statues to Portuguese heroes in the city were removed. Black soldiers carrying Russian rifles replaced Portuguese Army soldiers with arms in city barracks
2.
Fiscal year
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A fiscal year is the period used by governments for accounting and budget purposes, which vary between countries. It is also used for reporting by business and other organizations. Taxation laws generally require accounting records to be maintained and taxes calculated on an annual basis, the calculation of tax on an annual basis is especially relevant for direct taxation, such as income tax. Many annual government fees—such as Council rates, licence fees, etc. —are also levied on a year basis. The fiscal year end is the date marks the end of the fiscal year. Some companies—such as Cisco Systems—end their fiscal year on the day of the week each year. Under such a system, some years will have 52 weeks. Many universities have a year which ends during the summer. In the northern hemisphere this is July to the next June, in the southern hemisphere this is calendar year, January to December. Some media/communication-based organizations use a broadcast calendar as the basis for their fiscal year, the American football league NFL uses the term league year, which in effect forms the leagues fiscal year. In Afghanistan, the year was recently changed from 1 Hamal –29 Hoot to 1 Jadi –30 Qaus. The fiscal year runs with the Afghan calendar, thus resulting in difference of the Gregorian dates once in a four-year span, in Australia, a fiscal year is commonly called a financial year and starts on 1 July and ends on the next 30 June. Financial years are designated by the year of the second half of the period. For example, financial year 2017 is the 12-month period ending on 30 June 2017 and it is used for official purposes, by individual taxpayers and by the overwhelming majority of business enterprises. Business enterprises may opt to use a year that ends at the end of a week. All entities within the one group must use the financial year. The Commonwealth adopted the near-ubiquitous financial year standard since its inception in 1901, the reason given for the change was for convenience, as Parliament typically sits during May and June, while it was difficult for it to meet in November and December to pass a budget. In Austria the fiscal year is the year,1 January to 31 December
3.
African Union
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The African Union is a continental union consisting of all 55 countries on the African continent. It was established on 26 May 2001 in Addis Ababa, Ethiopia, the most important decisions of the AU are made by the Assembly of the African Union, a semi-annual meeting of the heads of state and government of its member states. The AUs secretariat, the African Union Commission, is based in Addis Ababa, the objectives of the AU are, To achieve greater unity and solidarity between the African countries and Africans. To defend the sovereignty, territorial integrity and independence of its Member States, to accelerate the political and social-economic integration of the continent. To promote and defend African common positions on issues of interest to the continent, to encourage international cooperation, taking due account of the Charter of the United Nations and the Universal Declaration of Human Rights. To promote peace, security, and stability on the continent, to promote democratic principles and institutions, popular participation and good governance. To promote and protect human and peoples rights in accordance with the African Charter on Human and Peoples Rights, to establish the necessary conditions which enable the continent to play its rightful role in the global economy and in international negotiations. To promote sustainable development at the economic, social and cultural levels as well as the integration of African economies, to promote co-operation in all fields of human activity to raise the living standards of African peoples. To coordinate and harmonize the policies between the existing and future Regional Economic Communities for the attainment of the objectives of the Union. To advance the development of the continent by promoting research in all fields, in particular in science, to work with relevant international partners in the eradication of preventable diseases and the promotion of good health on the continent. The African Union is made up of political and administrative bodies. The highest decision-making organ is the Assembly of the African Union, the Assembly is chaired by Idriss Déby, President of Chad. The AU also has a body, the Pan African Parliament. Its president is Bethel Nnaemeka Amadi, the AU Commission, the secretariat to the political structures, is chaired by Nkosazana Dlamini-Zuma of South Africa. On 15 July 2012, Ms. Dlamini-Zuma won a contested vote to become the first female head of the African Union Commission. The main administrative capital of the African Union is in Addis Ababa, Ethiopia, a new headquarters complex, the AU Conference Center and Office Complex, was inaugurated on 28 January 2012, during the 18th AU summit. The tower is 99.9 meters high to signify the date 9 September 1999, the AU covers the entire continent except for several territories held by Spain, France, Portugal and the United Kingdom. AU troops were deployed in Sudan for peacekeeping during Darfur conflict
4.
African Development Bank
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The African Development Bank Group is a multilateral development finance institution established to contribute to the economic development and social progress of African countries. The AfDB was founded in 1964 and comprises three entities, The African Development Bank, the African Development Fund and the Nigeria Trust Fund, the AfDB is a financial provider to African governments and private companies investing in the regional member countries. While it was headquartered in Abidjan, Côte dIvoire, the banks headquarters moved to Tunis, Tunisia in 2003, due to the Ivorian civil war. The agreement came into force on 10 September 1964, although established officially in under the auspices of the Economic Commission for Africa, the AfDB began operation in 1966. Although originally only African countries were able to join the bank, during its forty years of operations, AfDB has financed 2,885 operations, for a total of $47.5 billion. In 2003, it received an AAA rating from the financial rating agencies and had a capital of $32.043 billion. The African Development Bank Group has two entities, the African Development Fund and the Nigeria Trust Fund. Established in 1972, the African Development Fund started operations in 1974, in harmony with its lending strategy, poverty reduction is the main aim of ADF activities. Twenty-four non-African countries along with the AfDB constitute its current membership, the Federal Reserve Bank of New York was designated as the depositor bank for the fund according to telegraphs sent from the U. S. Embassy in Abidjan in 1976. The ADF’s sources are mainly contributions and periodic replacements by non-African member states, the fund is usually replenished every three years, unless member states decide otherwise. The total donations, at the end of 1996, amounted to $12.58 billion. The ADF lends at no interest rate, with a service charge of 0. 75%, a commitment fee of 0. 5%. The tenth United Kingdom replenishment of the ADF was in 2006, the Nigeria Trust Fund was established in 1976 by the Nigerian government with an initial capital of $80 million. The NTF is aimed at assisting in the development efforts of the poorest AfDB members, in 1996, the NTF had a total resource base of $432 million. It lends at a 4% interest rate with a 25-year repayment period, the AfDB is controlled by a Board of Executive Directors, made up of representatives of its member countries. The voting power on the Board is split according to the size of each members share, the largest African Development Bank shareholder is Nigeria with nearly 9 percent of the vote. All member countries of the AfDB are represented on the AfDB Board of Executive Directors, dr. Akinwumi Ayodeji Adesina is the 8th elected President of the African Development Bank Group], having taken the oath of office on September 1,2015. He chairs the Boards of both the African Development Bank and the African Development Fund, dr. Adesina served as Nigeria’s Minister of Agriculture and Rural Development from 2011 to 2015
5.
Southern African Development Community
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The Southern African Development Community is an inter-governmental organization headquartered in Gaborone, Botswana. Its goal is to further cooperation and integration as well as political. It complements the role of the African Union, the immediate forerunner of the political and security cooperation leg of todays SADC was the informal Frontline States grouping. The Southern African Development Coordination Conference was the forerunner of the socio-economic cooperation leg of todays SADC, the adoption by nine majority-ruled southern African countries of the Lusaka declaration on 1 April 1980 paved the way for the formal establishment of SADCC in April 1980. Membership of the FLS and SADCC sometimes differed, SADCC was transformed into SADC on 17 August 1992, with the adoption by the founding members of SADCC and newly independent Namibia of the Windhoek declaration and treaty establishing SADC. The 1992 SADC provided for both socio-economic cooperation and political and security cooperation, in reality, the FLS was dissolved only in 1994, after South Africas first democratic elections. Subsequent efforts to place political and security cooperation on an institutional footing under SADCs umbrella failed. On 14 August 2001, the 1992 SADC treaty was amended, the amendment heralded the overhaul of the structures, policies and procedures of SADC, a process which is ongoing. One of the changes is that political and security cooperation is institutionalised in the Organ on Politics, Defence, one of the principal SADC bodies, it is subject to the oversight of the organisations supreme body, the Summit, which comprises the heads of state or government. The organisation holds its own event in the form of the SADC Games. Originally planned for a date in Malawi and Lesotho, organisational issues led to abandonment of the plan. The first event in 2004 in Maputo resulted in over 1000 youths under-20 from 10 countries taking part in a programme including athletics, football, netball, boxing. SADC has 27 legally binding protocols dealing with such as Defence, Development, Illicit Drug Trade, Free Trade. Protocol on Energy – Intended to promote development of national energy policies. H. E. The SADC Free Trade Area was established in August 2008, after the implementation of the SADC Protocol on Trade in 2000 laid the foundation for its formation. Its original members were Botswana, Lesotho, Madagascar, Mauritius, Mozambique, Namibia, South Africa, Swaziland, Tanzania, Zambia and Zimbabwe, of the 15 SADC member states, only Angola, the Democratic Republic of Congo and Seychelles are not yet participating. The leaders of the three trading blocs agreed to create a free trade zone, the African Free Trade Zone. It is hoped the African Free Trade Zone agreement would ease access to markets within the zone, the only difference is that the African Free Trade Zone is the creation of independent African Countries
6.
World Bank
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The World Bank is an international financial institution that provides loans to countries of the world for capital programs. It comprises two institutions, the International Bank for Reconstruction and Development, and the International Development Association, the World Bank is a component of the World Bank Group, which is part of the United Nations system. The World Banks stated official goal is the reduction of poverty, the president of the World Bank is, traditionally, an American. The World Bank and the IMF are both based in Washington, D. C. and work closely with each other, although many countries were represented at the Bretton Woods Conference, the United States and United Kingdom were the most powerful in attendance and dominated the negotiations. Before 1974 the reconstruction and development loans provided by the World Bank were relatively small, the Banks staff were aware of the need to instill confidence in the bank. Fiscal conservatism ruled, and loan applications had to meet strict criteria, the first country to receive a World Bank loan was France. The Banks president at the time, John McCloy, chose France over two other applicants, Poland and Chile, the loan was for US$250 million, half the amount requested, and it came with strict conditions. France had to agree to produce a budget and give priority of debt repayment to the World Bank over other governments. World Bank staff closely monitored the use of the funds to ensure that the French government met the conditions. In addition, before the loan was approved, the United States State Department told the French government that its members associated with the Communist Party would first have to be removed, the French government complied with this diktat and removed the Communist coalition government - the so-called tripartisme. Within hours, the loan to France was approved, when the Marshall Plan went into effect in 1947, many European countries began receiving aid from other sources. Faced with this competition, the World Bank shifted its focus to non-European countries, in 1960, the International Development Association was formed, providing soft loans to developing countries. From 1974 to 1980 the bank concentrated on meeting the needs of people in the developing world. The size and number of loans to borrowers was greatly increased as loan targets expanded from infrastructure into social services and these changes can be attributed to Robert McNamara, who was appointed to the presidency in 1968 by Lyndon B. Johnson. McNamara implored bank treasurer Eugene Rotberg to seek out new sources of capital outside of the banks that had been the primary sources of funding. Rotberg used the bond market to increase the capital available to the bank. One consequence of the period of poverty alleviation lending was the rise of third world debt. From 1976 to 1980 developing world debt rose at an annual rate of 20%
7.
IMF
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The International Monetary Fund is an international organisation headquartered in Washington, D. C. It now plays a role in the management of balance of payments difficulties. Countries contribute funds to a pool through a system from which countries experiencing balance of payments problems can borrow money. As of 2016, the fund had SDR477 billion, the rationale for this is that private international capital markets function imperfectly and many countries have limited access to financial markets. The IMF provides alternate sources of financing and this assistance was meant to prevent the spread of international economic crises. The IMF was also intended to help mend the pieces of the economy after the Great Depression. As well, to provide investments for economic growth and projects such as infrastructure. The IMFs role was altered by the floating exchange rates post-1971. It shifted to examining the economic policies of countries with IMF loan agreements to determine if a shortage of capital was due to economic fluctuations or economic policy, the IMF also researched what types of government policy would ensure economic recovery. Rather than maintaining a position of oversight of only exchange rates and their role became a lot more active because the IMF now manages economic policy rather than just exchange rates. In addition, the IMF negotiates conditions on lending and loans under their policy of conditionality, nonconcessional loans, which include interest rates, are provided mainly through Stand-By Arrangements, the Flexible Credit Line, the Precautionary and Liquidity Line, and the Extended Fund Facility. The IMF provides emergency assistance via the Rapid Financing Instrument to members facing urgent balance-of-payments needs, the IMF is mandated to oversee the international monetary and financial system and monitor the economic and financial policies of its member countries. This activity is known as surveillance and facilitates international co-operation, the responsibilities changed from those of guardian to those of overseer of members’ policies. In 1995 the International Monetary Fund began work on data dissemination standards with the view of guiding IMF member countries to disseminate their economic and financial data to the public. The executive board approved the SDDS and GDDS in 1996 and 1997 respectively, the system is aimed primarily at statisticians and aims to improve many aspects of statistical systems in a country. It is also part of the World Bank Millennium Development Goals, some countries initially used the GDDS, but later upgraded to SDDS. The IMF does require collateral from countries for loans but also requires the government seeking assistance to correct its macroeconomic imbalances in the form of policy reform, if the conditions are not met, the funds are withheld. The concept of conditionality was introduced in a 1952 Executive Board decision, conditionality is associated with economic theory as well as an enforcement mechanism for repayment
8.
World Trade Organization
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The World Trade Organization is an intergovernmental organization which regulates international trade. The WTO officially commenced on 1 January 1995 under the Marrakesh Agreement, signed by 123 nations on 15 April 1994, replacing the General Agreement on Tariffs and Trade, most of the issues that the WTO focuses on derive from previous trade negotiations, especially from the Uruguay Round. The WTO is attempting to complete negotiations on the Doha Development Round, as of June 2012, the future of the Doha Round remained uncertain, the work programme lists 21 subjects in which the original deadline of 1 January 2005 was missed, and the round is still incomplete. This impasse has made it impossible to launch new WTO negotiations beyond the Doha Development Round, as a result, there have been an increasing number of bilateral free trade agreements between governments. As of July 2012, there were various groups in the WTO system for the current agricultural trade negotiation which is in the condition of stalemate. The WTOs current Director-General is Roberto Azevêdo, who leads a staff of over 600 people in Geneva, a trade facilitation agreement, part of the Bali Package of decisions, was agreed by all members on 7 December 2013, the first comprehensive agreement in the organizations history. Seven rounds of negotiations occurred under GATT, the first real GATT trade rounds concentrated on further reducing tariffs. Then, the Kennedy Round in the mid-sixties brought about a GATT anti-dumping Agreement, because these plurilateral agreements were not accepted by the full GATT membership, they were often informally called codes. Several of these codes were amended in the Uruguay Round, only four remained plurilateral, but in 1997 WTO members agreed to terminate the bovine meat and dairy agreements, leaving only two. Well before GATTs 40th anniversary, its members concluded that the GATT system was straining to adapt to a new globalizing world economy. In response to the problems identified in the 1982 Ministerial Declaration, the GATT still exists as the WTOs umbrella treaty for trade in goods, updated as a result of the Uruguay Round negotiations. GATT1994 is not however the only legally binding agreement included via the Final Act at Marrakesh, the highest decision-making body of the WTO is the Ministerial Conference, which usually meets every two years. It brings together all members of the WTO, all of which are countries or customs unions, the Ministerial Conference can take decisions on all matters under any of the multilateral trade agreements. When agricultural export subsidies were agreed to be phased out and adoption of the European Unions Everything, the WTO launched the current round of negotiations, the Doha Development Round, at the fourth ministerial conference in Doha, Qatar in November 2001. This was to be an effort to make globalization more inclusive and help the worlds poor, particularly by slashing barriers. The initial agenda comprised both further trade liberalization and new rule-making, underpinned by commitments to strengthen substantial assistance to developing countries. Among the various functions of the WTO, these are regarded by analysts as the most important and it provides a forum for negotiations and for settling disputes. Another priority of the WTO is the assistance of developing, least-developed and low-income countries in transition to adjust to WTO rules and disciplines through technical cooperation and training
9.
Group of 77
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There were 77 founding members of the organization, but by November 2013 the organization had since expanded to 134 member countries. Ecuador holds the Chairmanship for 2017, the group was founded on 15 June 1964, by the Joint Declaration of the Seventy-Seven Countries issued at the United Nations Conference on Trade and Development. The first major meeting was in Algiers in 1967, where the Charter of Algiers was adopted, there are Chapters of the Group of 77 in Geneva, Rome, Vienna, Paris, Nairobi and the Group of 24 in Washington, D. C. The group has been credited with common stance against apartheid and for supporting global disarmament and it has been supportive of the New International Economic Order. On the map, members as of 2013 are shown in green, the years in parenthesis represent the year/s a country has presided. Countries listed in bold are members of the G-24. See the official list of G-77 members, New Zealand signed the original Joint Declaration of the Developing Countries in October 1963, but pulled out of the group before the formation of the G77 in 1964. Mexico was a member, but left the Group after joining the OECD in 1994. It had presided over the group in 1973–1974, 1983–1984, however, south Korea was a founding member, but left the Group after joining the OECD in 1996. Yugoslavia was a member, by the late 1990s it was still listed on the membership list. It was removed from the list in late 2003 and it had presided over the group in 1985–1986. Bosnia and Herzegovina is the part of former Yugoslavia that is currently in G77. Cyprus was a member, but was no longer listed on the official membership list after its accession to the EU in 2004. Malta was admitted to the Group in 1976, but was no longer listed on the membership list after its accession to the EU in 2004. Palau joined the Group in 2002, but withdrew in 2004, romania was admitted to the Group in 1976, but was no longer listed on the official membership list after its accession to the EU in 2007. China has never joined the G77 but provides consistent political support. Its meetings usually take place twice a year, prior to the IMFC and Development Committee meetings, although membership in the G-24 is strictly limited to 24 countries, any member of the G-77 can join discussions. China has been a special invitee since the Gabon meetings of 1981, naglaa El-Ehwany, Minister of International Cooperation, Egypt, is the current chairman of the G-24
10.
Gross domestic product
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Gross Domestic Product is a monetary measure of the market value of all final goods and services produced in a period. Nominal GDP estimates are used to determine the economic performance of a whole country or region. The OECD defines GDP as a measure of production equal to the sum of the gross values added of all resident and institutional units engaged in production. ”An IMF publication states that GDP measures the monetary value of final goods and services - that is. Total GDP can also be broken down into the contribution of industry or sector of the economy. The ratio of GDP to the population of the region is the per capita GDP. William Petty came up with a concept of GDP to defend landlords against unfair taxation during warfare between the Dutch and the English between 1652 and 1674. Charles Davenant developed the method further in 1695, the modern concept of GDP was first developed by Simon Kuznets for a US Congress report in 1934. In this report, Kuznets warned against its use as a measure of welfare, after the Bretton Woods conference in 1944, GDP became the main tool for measuring a countrys economy. The switch from GNP to GDP in the US was in 1991, the history of the concept of GDP should be distinguished from the history of changes in ways of estimating it. The value added by firms is relatively easy to calculate from their accounts, but the value added by the sector, by financial industries. GDP can be determined in three ways, all of which should, in principle, give the same result and they are the production approach, the income approach, or the expenditure approach. The most direct of the three is the approach, which sums the outputs of every class of enterprise to arrive at the total. The income approach works on the principle that the incomes of the factors must be equal to the value of their product. This approach mirrors the OECD definition given above, deduct intermediate consumption from gross value to obtain the gross value added. Gross value added = gross value of output – value of intermediate consumption, value of output = value of the total sales of goods and services plus value of changes in the inventories. The sum of the value added in the various economic activities is known as GDP at factor cost. GDP at factor cost plus indirect taxes less subsidies on products = GDP at producer price, for measuring output of domestic product, economic activities are classified into various sectors. Subtracting each sectors intermediate consumption from gross output gives the GDP at factor cost, adding indirect tax minus subsidies in GDP at factor cost gives the GDP at producer prices
11.
Purchasing power parity
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Observed deviations of the exchange rate from purchasing power parity are measured by deviations of the real exchange rate from its PPP value of 1. PPP exchange rates help to minimize misleading international comparisons that can arise with the use of exchange rates. For example, suppose that two countries produce the same amounts of goods as each other in each of two different years. But if one countrys GDP is converted into the countrys currency using PPP exchange rates instead of observed market exchange rates. The idea originated with the School of Salamanca in the 16th century, the best-known purchasing power adjustment is the Geary–Khamis dollar. The real exchange rate is equal to the nominal exchange rate. If purchasing power parity held exactly, then the exchange rate would always equal one. However, in practice the exchange rates exhibit both short run and long run deviations from this value, for example due to reasons illuminated in the Balassa–Samuelson theorem. There can be marked differences between purchasing power adjusted incomes and those converted via market exchange rates. This discrepancy has large implications, for instance, when converted via the exchange rates GDP per capita in India is about US$1,965 while on a PPP basis it is about US$7,197. At the other extreme, Denmarks nominal GDP per capita is around US$62,100, the purchasing power parity exchange rate serves two main functions. PPP exchange rates can be useful for making comparisons between countries because they stay fairly constant from day to day or week to week and only change modestly, if at all, from year to year. The PPP exchange-rate calculation is controversial because of the difficulties of finding comparable baskets of goods to compare purchasing power across countries, people in different countries typically consume different baskets of goods. It is necessary to compare the cost of baskets of goods and this is a difficult task because purchasing patterns and even the goods available to purchase differ across countries. Thus, it is necessary to make adjustments for differences in the quality of goods, furthermore, the basket of goods representative of one economy will vary from that of another, Americans eat more bread, Chinese more rice. Hence a PPP calculated using the US consumption as a base will differ from that calculated using China as a base, additional statistical difficulties arise with multilateral comparisons when more than two countries are to be compared. Various ways of averaging bilateral PPPs can provide a stable multilateral comparison. These are all issues of indexing, as with other price indices there is no way to reduce complexity to a single number that is equally satisfying for all purposes
12.
Agriculture
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Agriculture is the cultivation and breeding of animals, plants and fungi for food, fiber, biofuel, medicinal plants and other products used to sustain and enhance human life. Agriculture was the key development in the rise of human civilization. The study of agriculture is known as agricultural science, the history of agriculture dates back thousands of years, and its development has been driven and defined by greatly different climates, cultures, and technologies. Industrial agriculture based on large-scale monoculture farming has become the dominant agricultural methodology, genetically modified organisms are an increasing component of agriculture, although they are banned in several countries. Agricultural food production and water management are increasingly becoming global issues that are fostering debate on a number of fronts, the major agricultural products can be broadly grouped into foods, fibers, fuels, and raw materials. Specific foods include cereals, vegetables, fruits, oils, meats, fibers include cotton, wool, hemp, silk and flax. Raw materials include lumber and bamboo, other useful materials are also produced by plants, such as resins, dyes, drugs, perfumes, biofuels and ornamental products such as cut flowers and nursery plants. The word agriculture is a late Middle English adaptation of Latin agricultūra, from ager, field, Agriculture usually refers to human activities, although it is also observed in certain species of ant, termite and ambrosia beetle. To practice agriculture means to use resources to produce commodities which maintain life, including food, fiber, forest products, horticultural crops. This definition includes arable farming or agronomy, and horticulture, all terms for the growing of plants, even then, it is acknowledged that there is a large amount of knowledge transfer and overlap between silviculture and agriculture. In traditional farming, the two are often combined even on small landholdings, leading to the term agroforestry, Agriculture began independently in different parts of the globe, and included a diverse range of taxa. At least 11 separate regions of the Old and New World were involved as independent centers of origin, wild grains were collected and eaten from at least 105,000 years ago. Pigs were domesticated in Mesopotamia around 15,000 years ago, rice was domesticated in China between 13,500 and 8,200 years ago, followed by mung, soy and azuki beans. Sheep were domesticated in Mesopotamia between 13,000 and 11,000 years ago. From around 11,500 years ago, the eight Neolithic founder crops, emmer and einkorn wheat, hulled barley, peas, lentils, bitter vetch, chick peas and flax were cultivated in the Levant. Cattle were domesticated from the aurochs in the areas of modern Turkey. In the Andes of South America, the potato was domesticated between 10,000 and 7,000 years ago, along with beans, coca, llamas, alpacas, sugarcane and some root vegetables were domesticated in New Guinea around 9,000 years ago. Sorghum was domesticated in the Sahel region of Africa by 7,000 years ago, cotton was domesticated in Peru by 5,600 years ago, and was independently domesticated in Eurasia at an unknown time
13.
Industry
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Industry is the production of goods or related services within an economy. The major source of revenue of a group or company is the indicator of its relevant industry, when a large group has multiple sources of revenue generation, it is considered to be working in different industries. Manufacturing industry became a key sector of production and labour in European and North American countries during the Industrial Revolution, upsetting previous mercantile and this came through many successive rapid advances in technology, such as the production of steel and coal. Following the Industrial Revolution, possibly a third of the economic output are derived that is from manufacturing industries. Many developed countries and many developing/semi-developed countries depend significantly on manufacturing industry, Industries, the countries they reside in, and the economies of those countries are interlinked in a complex web of interdependence. Industries can be classified in a variety of ways, at the top level, industry is often classified according to the three-sector theory into sectors, primary, secondary, and tertiary. Some authors add quaternary or even quinary sectors, over time, the fraction of a societys industry within each sector changes. Below the economic sectors there are other more detailed industry classifications. These classification systems commonly divide industries according to functions and markets. Market-based classification systems such as the Global Industry Classification Standard and the Industry Classification Benchmark are used in finance, the International Standard Industrial Classification of all economic activities is the most complete and systematic industrial classification made by the United Nations Statistics Division. ISIC is a classification of economic activities arranged so that entities can be classified according to the activity they carry out. The Industrial Revolution led to the development of factories for large-scale production, originally the factories were steam-powered, but later transitioned to electricity once an electrical grid was developed. The mechanized assembly line was introduced to parts in a repeatable fashion. This led to significant increases in efficiency, lowering the cost of the end process, later automation was increasingly used to replace human operators. This process has accelerated with the development of the computer and the robot, historically certain manufacturing industries have gone into a decline due to various economic factors, including the development of replacement technology or the loss of competitive advantage. An example of the former is the decline in manufacturing when the automobile was mass-produced. A recent trend has been the migration of prosperous, industrialized nations towards a post-industrial society and this is manifested by an increase in the service sector at the expense of manufacturing, and the development of an information-based economy, the so-called informational revolution. In a post-industrial society, manufacturing is relocated to more favourable locations through a process of off-shoring
14.
Tertiary sector
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The tertiary sector or service sector is the third of the three economic sectors of the three-sector theory. The others are the secondary sector, and the primary sector, the basic characteristic of this sector is the production of services instead of end products. Services include attention, advice, access, experience, and discussion, the production of information has long been regarded as a service, but some economists now attribute it to a fourth sector, the quaternary sector. The tertiary sector of industry involves the provision of services to businesses as well as final consumers. The goods may be transformed in the process of providing the service, however, the focus is on people interacting with people and serving the customer rather than transforming physical goods. It is sometimes hard to define whether a company is part of the secondary or tertiary sector. These governmental classification systems have a hierarchy that reflects whether the economic goods are tangible or intangible. Unlike governmental classification systems, the first level of market-based classification systems divides the economy into functionally related markets or industries, the second or third level of these hierarchies then reflects whether goods or services are produced. For the last 100 years, there has been a shift from the primary and secondary sectors to the tertiary sector in industrialised countries. The tertiary sector is now the largest sector of the economy in the Western world and these are not necessarily busboys and live-in maids. Many of them are in the professional category and they are earning as much as manufacturing workers, and often more. The first economy to follow path in the modern world was the United Kingdom. The speed at which other economies have made the transition to service-based economies has increased over time, historically, manufacturing tended to be more open to international trade and competition than services. Service providers face obstacles selling services that goods-sellers rarely face, services are intangible, making it difficult for potential customers to understand what they will receive and what value it will hold for them. Indeed, some, such as consultants and providers of investment services, since the quality of most services depends largely on the quality of the individuals providing the services, people costs are usually a high fraction of service costs. Whereas a manufacturer may use technology, simplification, and other techniques to lower the cost of goods sold, for example, how does one choose one investment adviser over another, since they are often seen to provide identical services. Charging a premium for services is usually an option only for the most established firms, who charge extra based upon brand recognition
15.
Inflation
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In economics, inflation is a sustained increase in the general price level of goods and services in an economy over a period of time resulting in a loss of value of currency. When the price rises, each unit of currency buys fewer goods. Consequently, inflation reflects a reduction in the power per unit of money – a loss of real value in the medium of exchange. A chief measure of inflation is the inflation rate, the annualized percentage change in a general price index, usually the consumer price index. The opposite of inflation is deflation, Inflation affects economies in various positive and negative ways. Economists generally believe that high rates of inflation and hyperinflation are caused by a growth of the money supply. However, money supply growth does not necessarily cause inflation, some economists maintain that under the conditions of a liquidity trap, large monetary injections are like pushing on a string. Views on which factors determine low to moderate rates of inflation are more varied, low or moderate inflation may be attributed to fluctuations in real demand for goods and services, or changes in available supplies such as during scarcities. However, the view is that a long sustained period of inflation is caused by money supply growing faster than the rate of economic growth. Today, most economists favor a low and steady rate of inflation, the task of keeping the rate of inflation low and stable is usually given to monetary authorities. Rapid increases in quantity of the money or in the money supply have occurred in many different societies throughout history. By diluting the gold with other metals, the government could issue more coins without also needing to increase the amount of used to make them. When the cost of each coin is lowered in this way and this practice would increase the money supply but at the same time the relative value of each coin would be lowered. As the relative value of the coins becomes lower, consumers would need to give more coins in exchange for the same goods and these goods and services would experience a price increase as the value of each coin is reduced. Song Dynasty China introduced the practice of printing paper money in order to create fiat currency, during the Mongol Yuan Dynasty, the government spent a great deal of money fighting costly wars, and reacted by printing more money, leading to inflation. Fearing the inflation that plagued the Yuan dynasty, the Ming Dynasty initially rejected the use of paper money, historically, large infusions of gold or silver into an economy also led to inflation. This was largely caused by the influx of gold and silver from the New World into Habsburg Spain. The silver spread throughout a previously cash-starved Europe and caused widespread inflation, demographic factors also contributed to upward pressure on prices, with European population growth after depopulation caused by the Black Death pandemic
16.
Consumer price index
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A consumer price index measures changes in the price level of market basket of consumer goods and services purchased by households. The CPI is a statistical estimate constructed using the prices of a sample of items whose prices are collected periodically. It is one of several price indices calculated by most national statistical agencies, the annual percentage change in a CPI is used as a measure of inflation. A CPI can be used to index the real value of wages, salaries, pensions, for regulating prices, in most countries, the CPI is, along with the population census one of the most closely watched national economic statistics. Basic types of data that are needed to construct the CPI, price data, the price data are collected for a sample of goods and services from a sample of sales outlets in a sample of locations for a sample of times. The weighting data are estimates of the shares of the different types of expenditure in the total expenditure covered by the index, therefore, the sampling variance cannot be calculated. In any case, an estimate is required in most of the purposes for which the index is used. These indices compare prices each month with prices in the price-reference month and it takes time to assemble and process the information used for weighting which, in addition to household expenditure surveys, may include trade and tax data. Ideally, the weights would relate to the composition of expenditure during the time between the month and the current month. There is a large technical economics literature on index formulae which would approximate this, such an index would show how consumer expenditure would have to move to compensate for price changes so as to allow consumers to maintain a constant standard of living. Approximations can only be computed retrospectively, whereas the index has to appear monthly and, preferably, the coverage of the index may be limited. Saving and investment are always excluded, though the prices paid for services provided by financial intermediaries may be included along with insurance. The index reference period, usually called the year, often differs both from the weight-reference period and the price reference period. This is just a matter of rescaling the whole time-series to make the value for the index reference-period equal to 100. Current Item Price = Base Year Price × Current CPI Base Year CPI or CPI2 CPI1 = Price 2 Price 1 Where 1 is usually the comparison year, alternatively, the CPI can be performed as CPI = updated cost base period cost ×100. The updated cost is divided by that of the initial year, many but not all price indices are weighted averages using weights that sum to 1 or 100. Example, The prices of 85,000 items from 22,000 stores, and 35,000 rental units are added together and averaged. They are weighted this way, Housing,41. 4%, Food and Beverage,17. 4%, Transport,17. 0%, Medical Care,6. 9%, Other,6. 9%, Apparel,6. 0%, Entertainment,4. 4%
17.
Poverty threshold
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The poverty threshold, poverty limit or poverty line is the minimum level of income deemed adequate in a particular country. In practice, like the definition of poverty, the official or common understanding of the poverty line is higher in developed countries than in developing countries. In 2008, the World Bank came out with a figure of $1.25 at 2005 purchasing-power parity, the new IPL replaces the $1.25 per day figure, which used 2005 data. Most scholars agree that it better reflects todays reality, particularly new price levels in developing countries, the common international poverty line has in the past been roughly $1 a day. At present the percentage of the population living under extreme poverty is likely to fall below 10% according to the World Bank projections released in 2015. Determining the poverty line is usually done by finding the total cost of all the resources that an average human adult consumes in one year. Individual factors are used to account for various circumstances, such as whether one is a parent, elderly. The poverty threshold may be adjusted annually, charles Booth, a pioneering investigator of poverty in London at the turn of the 20th century, popularised the idea of a poverty line, a concept originally conceived by the London School Board. Booth set the line at 10 to 20 shillings per week, to secure the necessaries of a healthy life, which included fuel and light, rent, food, clothing, and household and personal items. Based on data from leading nutritionists of the period, he calculated the cheapest price for the minimum calorific intake and nutritional balance necessary and he considered this amount to set his poverty line and concluded that 27. 84% of the total population of York lived below this poverty line. Rowntree distinguished between primary poverty, those lacking in income and secondary poverty, those who had enough income, Absolute poverty is the level of poverty as defined in terms of the minimal requirements necessary to afford minimal standards of food, clothing, health care and shelter. For the measure to be absolute, the line must be the same in different countries, cultures, such an absolute measure should look only at the individuals power to consume and it should be independent of any changes in income distribution. Notice that if real income in an economy increases. Measuring poverty by a threshold has the advantage of applying the same standard across different locations and time periods. For example, a living in far northern Scandinavia requires a source of heat during colder months. The term absolute poverty is sometimes used as a synonym for extreme poverty. Absolute poverty is the absence of resources to secure basic life necessities. It depends not only on income but also on access to services, safe drinking water, Water must not come solely from rivers and ponds, and must be available nearby
18.
Aluminum
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Aluminium or aluminum is a chemical element in the boron group with symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic, ductile metal, Aluminium metal is so chemically reactive that native specimens are rare and limited to extreme reducing environments. Instead, it is combined in over 270 different minerals. The chief ore of aluminium is bauxite, Aluminium is remarkable for the metals low density and its ability to resist corrosion through the phenomenon of passivation. Aluminium and its alloys are vital to the industry and important in transportation and structures, such as building facades. The oxides and sulfates are the most useful compounds of aluminium, despite its prevalence in the environment, no known form of life uses aluminium salts metabolically, but aluminium is well tolerated by plants and animals. Because of these salts abundance, the potential for a role for them is of continuing interest. Aluminium is a soft, durable, lightweight, ductile. It is nonmagnetic and does not easily ignite, a fresh film of aluminium serves as a good reflector of visible light and an excellent reflector of medium and far infrared radiation. The yield strength of aluminium is 7–11 MPa, while aluminium alloys have yield strengths ranging from 200 MPa to 600 MPa. Aluminium has about one-third the density and stiffness of steel and it is easily machined, cast, drawn and extruded. Aluminium atoms are arranged in a cubic structure. Aluminium has an energy of approximately 200 mJ/m2. Aluminium is a thermal and electrical conductor, having 59% the conductivity of copper. Aluminium is capable of superconductivity, with a critical temperature of 1.2 kelvin. Aluminium is the most common material for the fabrication of superconducting qubits, the strongest aluminium alloys are less corrosion resistant due to galvanic reactions with alloyed copper. This corrosion resistance is reduced by aqueous salts, particularly in the presence of dissimilar metals. In highly acidic solutions, aluminium reacts with water to form hydrogen, primarily because it is corroded by dissolved chlorides, such as common sodium chloride, household plumbing is never made from aluminium
19.
Coal
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Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon, along with quantities of other elements, chiefly hydrogen, sulfur, oxygen. A fossil fuel, coal forms when plant matter is converted into peat, which in turn is converted into lignite, then sub-bituminous coal, after that bituminous coal. This involves biological and geological processes that take place over time, throughout history, coal has been used as an energy resource, primarily burned for the production of electricity and heat, and is also used for industrial purposes, such as refining metals. Coal is the largest source of energy for the generation of electricity worldwide, the extraction of coal, its use in energy production and its byproducts are all associated with environmental and health effects including climate change. Coal is extracted from the ground by coal mining, since 1983, the worlds top coal producer has been China. In 2015 China produced 3,747 million tonnes of coal –47. 7% of 7,861 million tonnes world coal production, in 2015 other large producers were United States, India, European Union and Australia. The word originally took the col in Old English, from Proto-Germanic *kula. In Old Turkic languages, kül is ash, cinders, öčür is quench, the compound charcoal in Turkic is öčür kül, literally quenched ashes, cinders, coals with elided anlaut ö- and inflection affixes -ülmüş. At various times in the geologic past, the Earth had dense forests in low-lying wetland areas, due to natural processes such as flooding, these forests were buried underneath soil. As more and more soil deposited over them, they were compressed, the temperature also rose as they sank deeper and deeper. As the process continued the plant matter was protected from biodegradation and oxidation and this trapped the carbon in immense peat bogs that were eventually covered and deeply buried by sediments. Under high pressure and high temperature, dead vegetation was slowly converted to coal, as coal contains mainly carbon, the conversion of dead vegetation into coal is called carbonization. The wide, shallow seas of the Carboniferous Period provided ideal conditions for coal formation, the exception is the coal gap in the Permian–Triassic extinction event, where coal is rare. Coal is known from Precambrian strata, which predate land plants — this coal is presumed to have originated from residues of algae, in its dehydrated form, peat is a highly effective absorbent for fuel and oil spills on land and water. It is also used as a conditioner for soil to make it able to retain. Lignite, or brown coal, is the lowest rank of coal, jet, a compact form of lignite, is sometimes polished and has been used as an ornamental stone since the Upper Palaeolithic
20.
Petroleum product
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Petroleum products are materials derived from crude oil as it is processed in oil refineries. Unlike petrochemicals, which are a collection of well-defined usually pure chemical compounds, the majority of petroleum is converted to petroleum products, which includes several classes of fuels. According to the composition of the oil and depending on the demands of the market. The largest share of oil products is used as carriers, i. e. various grades of fuel oil. These fuels include or can be blended to give gasoline, jet fuel, diesel fuel, heating oil, heavier fractions can also be used to produce asphalt, tar, paraffin wax, lubricating and other heavy oils. Refineries also produce chemicals, some of which are used in chemical processes to produce plastics. Since petroleum often contains a few percent sulfur-containing molecules, elemental sulfur is also produced as a petroleum product. Carbon, in the form of coke, and hydrogen may also be produced as petroleum products. The hydrogen produced is used as an intermediate product for other oil refinery processes such as hydrocracking. Oil refineries will blend various feedstocks, mix appropriate additives, provide short term storage, and prepare for bulk loading to trucks, barges, product ships, gaseous fuels such as propane, stored and shipped in liquid form under pressure in specialized railcars to distributors. Shipped by barge, rail, and tanker ship, lubricants, usually shipped in bulk to an offsite packaging plant. Paraffin wax, used in the packaging of foods, among others. May be shipped in bulk to a site to prepare as packaged blocks, sulfur, byproduct of sulfur removal from petroleum, which contain percent of organosulfur compounds. Bulk tar shipping for offsite unit packaging for use in tar-and-gravel roofing or similar uses, asphalt - used as a binder for gravel to form asphalt concrete, which is used for paving roads, lots, etc. An asphalt unit prepares bulk asphalt for shipment, Petroleum coke, used in specialty carbon products such as certain types of electrodes, or as solid fuel. Petrochemical are organic compounds that are the ingredients for the industry, ranging from polymers. Representative petrochemicals are ethylene and benzene-toluene-xylenes, o2 Over 6,000 items are made from petroleum waste by-products including, Fertilizer, Linoleum, Perfume, Insecticide, Petroleum Jelly, Soap, Vitamin Capsules. See link to partial list of 144 by-products listed by Ranken Energy
21.
Chemical
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A chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components by physical methods, i. e. without breaking chemical bonds. Chemical substances can be chemical elements, chemical compounds, ions or alloys, Chemical substances are often called pure to set them apart from mixtures. A common example of a substance is pure water, it has the same properties. Other chemical substances commonly encountered in pure form are diamond, gold, table salt, however, in practice, no substance is entirely pure, and chemical purity is specified according to the intended use of the chemical. Chemical substances exist as solids, liquids, gases, or plasma, Chemical substances may be combined or converted to others by means of chemical reactions. Forms of energy, such as light and heat, are not matter, a chemical substance may well be defined as any material with a definite chemical composition in an introductory general chemistry textbook. According to this definition a chemical substance can either be a chemical element or a pure chemical compound. But, there are exceptions to this definition, a substance can also be defined as a form of matter that has both definite composition and distinct properties. The chemical substance index published by CAS also includes several alloys of uncertain composition, in geology, substances of uniform composition are called minerals, while physical mixtures of several minerals are defined as rocks. Many minerals, however, mutually dissolve into solid solutions, such that a rock is a uniform substance despite being a mixture in stoichiometric terms. Feldspars are an example, anorthoclase is an alkali aluminium silicate. In law, chemical substances may include both pure substances and mixtures with a composition or manufacturing process. For example, the EU regulation REACH defines monoconstituent substances, multiconstituent substances and substances of unknown or variable composition, the latter two consist of multiple chemical substances, however, their identity can be established either by direct chemical analysis or reference to a single manufacturing process. For example, charcoal is a complex, partially polymeric mixture that can be defined by its manufacturing process. Therefore, although the chemical identity is unknown, identification can be made to a sufficient accuracy. The CAS index also includes mixtures, polymers almost always appear as mixtures of molecules of multiple molar masses, each of which could be considered a separate chemical substance. However, the polymer may be defined by a precursor or reaction
22.
Fertilizer
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A fertilizer or fertiliser is any material of natural or synthetic origin that is applied to soils or to plant tissues to supply one or more plant nutrients essential to the growth of plants. Fertilizers enhance the growth of plants and this goal is met in two ways, the traditional one being additives that provide nutrients. The second mode by which some fertilizers act is to enhance the effectiveness of the soil by modifying its water retention and aeration and this article, like many on fertilizers, emphasises the nutritional aspect. The nutrients required for plant life are classified according to the elements. Instead compounds containing these elements are the basis of fertilizers, the macronutrients are consumed in larger quantities and are present in plant tissue in quantities from 0. 15% to 6. 0% on a dry matter basis. Plants are made up of four elements, hydrogen, oxygen, carbon. Carbon, hydrogen and oxygen are widely available as water and carbon dioxide, although nitrogen makes up most of the atmosphere, it is in a form that is unavailable to plants. Nitrogen is the most important fertilizer since nitrogen is present in proteins, DNA, to be nutritious to plants, nitrogen must be made available in a fixed form. Only some bacteria and their host plants can fix atmospheric nitrogen by converting it to ammonia, phosphate is required for the production of DNA and ATP, the main energy carrier in cells, as well as certain lipids. Micronutrients are consumed in quantities and are present in plant tissue on the order of parts-per-million, ranging from 0.15 to 400 ppm DM. These elements are present at the active sites of enzymes that carry out the plants metabolism. Because these elements enable catalysts their impact far exceeds their weight percentage, Fertilizers are classified in several ways. They are classified according to whether they provide a single nutrient, multinutrient fertilizers provide two or more nutrients, for example N and P. Fertilizers are also sometimes classified as inorganic versus organic. Inorganic fertilizers exclude carbon-containing materials except ureas, organic fertilizers are usually plant- or animal-derived matter. Inorganic are sometimes called synthetic fertilizers since various chemical treatments are required for their manufacture, the main nitrogen-based straight fertilizer is ammonia or its solutions. Ammonium nitrate is widely used. Urea is another source of nitrogen, having the advantage that it is solid and non-explosive, unlike ammonia and ammonium nitrate. A few percent of the fertilizer market has been met by calcium ammonium nitrate
23.
Soap
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SOAP is a protocol specification for exchanging structured information in the implementation of web services in computer networks. Its purpose is to induce extensibility, neutrality and independence, SOAP allows processes running on disparate operating systems to communicate using Extensible Markup Language. Since Web protocols like HTTP are installed and running on all operating systems, SOAP allows clients to invoke web services and receive responses independent of language, SOAP provides the Messaging Protocol layer of a web services protocol stack for web services. The server then returns a SOAP response, e. g. prices, location, since the generated data comes in a standardized machine-parsable format, the requesting application can then integrate it directly. SOAP was designed as a protocol in 1998 by Dave Winer, Don Box, Bob Atkinson, and Mohsen Al-Ghosein for Microsoft. Due to politics within Microsoft, the specification was not made available until it was submitted to IETF13 September 1999, because of Microsofts hesitation, Dave Winer shipped XML-RPC in 1998. The submitted Internet Draft did not reach RFC status and is not considered a standard as such. Version 1.1 of the specification was published as a W3C Note on 8 May 2000, since version 1.1 did not reach W3C Recommendation status, it can not be considered a standard either. Version 1.2 of the specification, however, became a W3C recommendation on June 24,2003, the SOAP specification was maintained by the XML Protocol Working Group of the World Wide Web Consortium until the group was closed 10 July 2009. SOAP originally stood for Simple Object Access Protocol but version 1.2 of the standard dropped this acronym, SOAP specification can be broadly defined to be consisting of the following 3 conceptual components, Protocol concepts, encapsulation concepts and Network concepts. SOAP, The set of rules formalizing and governing the format, SOAP Nodes, These are physical/logical machines with processing units which are used to transmit/forward, receive and process SOAP messages. SOAP Roles, Over the path of a SOAP message, all assume a specific role. The role of the node defines the action that the node performs on the message it receives, for example, a role none means that no node will process the SOAP header in any way and simply transmit the message along its path. SOAP protocol binding, A SOAP message needs to work in conjunction with other protocols to be transferred over a network, for example, a SOAP message could use TCP as a lower layer protocol to transfer messages. These bindings are defined in the SOAP protocol binding framework, SOAP features, SOAP provides a messaging framework only. However, it can be extended to add features such as reliability, security etc, there are rules to be followed when adding features to the SOAP framework. SOAP module, A collection of specifications regarding the semantics of SOAP header to describe any new features being extended upon SOAP, a module needs to realize 0 or more features. SOAP requires modules to adhere to prescribed rules, SOAP message, Represents the information being exchanged between 2 soap nodes
24.
Paint
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Paint is any liquid, liquefiable, or mastic composition that, after application to a substrate in a thin layer, converts to a solid film. It is most commonly used to protect, color, or provide texture to objects, Paint can be made or purchased in many colors—and in many different types, such as watercolor, synthetic, etc. Paint is typically stored, sold, and applied as a liquid, in 2001 and 2004, South African archeologists reported finds in Blombos Cave of a 100, 000-year-old human-made ochre-based mixture that could have been used like paint. Further excavation in the cave resulted in the 2011 report of a complete toolkit for grinding pigments. Cave paintings drawn with red or yellow ochre, hematite, manganese oxide, ancient colored walls at Dendera, Egypt, which were exposed for years to the elements, still possess their brilliant color, as vivid as when they were painted about 2,000 years ago. The Egyptians mixed their colors with a substance, and applied them separately from each other without any blending or mixture. They appear to have used six colors, white, black, blue, red, yellow and they first covered the area entirely with white, then traced the design in black, leaving out the lights of the ground color. They used minium for red, and generally of a dark tinge, pliny mentions some painted ceilings in his day in the town of Ardea, which had been done prior to the foundation of Rome. He expresses great surprise and admiration at their freshness, after the lapse of so many centuries, Paint was made with the yolk of eggs and therefore, the substance would harden and adhere to the surface it was applied to. Pigment was made from plants, sand, and different soils, Most paints used either oil or water as a base. The process was done by hand by the painters and exposed them to lead poisoning due to the white-lead powder, in 1718, Marshall Smith invented a Machine or Engine for the Grinding of Colours in England. It is not known precisely how it operated, but it was a device that increased the efficiency of pigment grinding dramatically. By the proper onset of the Industrial Revolution, paint was being ground in steam-powered mills, interior house painting increasingly became the norm as the 19th century progressed, both for decorative reasons and because the paint was effective in preventing the walls rotting from damp. Linseed oil was also used as an inexpensive binder. In 1866, Sherwin-Williams in the United States opened as a large paint-maker and it was not until the stimulus of World War II created a shortage of linseed oil in the supply market that artificial resins, or alkyds, were invented. Cheap and easy to make, they held the color well. The vehicle is composed of the binder, or, if it is necessary to thin the binder with a diluent like solvent or water, it is the combination of binder + diluent. In this case, once the paint has dried or cured very nearly all of the diluent has evaporated, thus, an important quantity in coatings formulation is the vehicle solids, sometimes called the resin solids of the formula
25.
Cement
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A cement is a binder, a substance used in construction that sets, hardens and adheres to other materials, binding them together. Cement is seldom used solely, but is used to bind sand, Cement is used with fine aggregate to produce mortar for masonry, or with sand and gravel aggregates to produce concrete. Non-hydraulic cement will not set in wet conditions or underwater, rather, it sets as it dries and it is resistant to attack by chemicals after setting. Hydraulic cements set and become adhesive due to a reaction between the dry ingredients and water. The chemical reaction results in mineral hydrates that are not very water-soluble and so are quite durable in water and this allows setting in wet condition or underwater and further protects the hardened material from chemical attack. The chemical process for hydraulic cement found by ancient Romans used volcanic ash with added lime, the word cement can be traced back to the Roman term opus caementicium, used to describe masonry resembling modern concrete that was made from crushed rock with burnt lime as binder. The volcanic ash and pulverized brick supplements that were added to the burnt lime, to obtain a hydraulic binder, were referred to as cementum, cimentum, cäment. In modern times, organic polymers are used as cements in concrete. Non-hydraulic cement, such as slaked lime, hardens by carbonation in the presence of carbon dioxide which is present in the air. The carbonation reaction requires the dry cement to be exposed to air and this whole process is called the lime cycle. Conversely, hydraulic cement hardens by hydration when water is added, Hydraulic cements are made of a mixture of silicates and oxides, the four main components being, Belite, Alite, Tricalcium aluminate, Brownmillerite. The chemistry of the above listed reactions is not completely clear and is still the object of research, Cement, chemically speaking, is a product that includes lime as the primary curing ingredient, but is far from the first material used for cementation. The Babylonians and Assyrians used bitumen to bind together burnt brick or alabaster slabs, in Egypt stone blocks were cemented together with a mortar made of sand and roughly burnt gypsum, which often contained calcium carbonate. Lime was used on Crete and by the ancient Greeks, there is evidence that the Minoans of Crete used crushed potshards as an artificial pozzolan for hydraulic cement. A kind of powder which from natural causes produces astonishing results and it is found in the neighborhood of Baiae and in the country belonging to the towns round about Mt. Vesuvius. This substance when mixed with lime and rubble not only lends strength to buildings of other kinds, the Greeks used volcanic tuff from the island of Thera as their pozzolan and the Romans used crushed volcanic ash with lime. This mixture was able to set under water increasing its resistance, the material was called pozzolana from the town of Pozzuoli, west of Naples where volcanic ash was extracted. In the absence of ash, the Romans used powdered brick or pottery as a substitute
26.
Asbestos
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They are commonly known by their colors, as blue asbestos, brown asbestos, white asbestos, and green asbestos. It was used in applications as electrical insulation for hotplate wiring. When asbestos is used for its resistance to fire or heat and these desirable properties made asbestos very widely used. Prolonged inhalation of asbestos fibers can cause serious and fatal illnesses including cancer, mesothelioma. Concern of asbestos-related illness in modern times began in the 20th century, by the 1980s and 1990s, asbestos trade and use were heavily restricted, phased out, or banned outright in an increasing number of countries. S. History and a much lesser legal issue in most other countries involved, asbestos-related liability also remains an ongoing concern for many manufacturers, insurers and reinsurers. Asbestos derives from the ancient Greek ἄσβεστος, meaning unquenchable or inextinguishable, the word is pronounced /æsˈbɛstəs/, /æzˈbɛstəs/ or /æzˈbɛstɒs/. Six mineral types are defined by the United States Environmental Protection Agency as asbestos including those belonging to the serpentine class, all six asbestos mineral types are known to be human carcinogens. The visible fibers are themselves composed of millions of microscopic fibrils that can be released by abrasion. Chrysotile is the member of the serpentine class. 12001-29-5, is obtained from rocks which are common throughout the world. Its idealized chemical formula is Mg34, chrysotile appears under the microscope as a white fiber. Chrysotile has been used more than any type and accounts for about 95% of the asbestos found in buildings in America. Chrysotile is more flexible than amphibole types of asbestos, and can be spun, the most common use was corrugated asbestos cement roofing primarily for outbuildings, warehouses and garages. It may also be found in sheets or panels used for ceilings and sometimes for walls, chrysotile has been a component in joint compound and some plasters. Amosite, crocidolite, tremolite, anthophyllite and actinolite are members of the amphibole class, one formula given for amosite is Fe7Si8O222. Amosite is seen under a microscope as a grey-white vitreous fiber and it is found most frequently as a fire retardant in thermal insulation products, asbestos insulating board and ceiling tiles. 12001-28-4, is the form of the amphibole riebeckite, found primarily in southern Africa
27.
Glass
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Glass is a non-crystalline amorphous solid that is often transparent and has widespread practical, technological, and decorative usage in, for example, window panes, tableware, and optoelectronics. The most familiar, and historically the oldest, types of glass are silicate glasses based on the chemical compound silica, the primary constituent of sand. The term glass, in usage, is often used to refer only to this type of material. Many applications of silicate glasses derive from their optical transparency, giving rise to their use as window panes. Glass can be coloured by adding metallic salts, and can also be painted and printed with vitreous enamels and these qualities have led to the extensive use of glass in the manufacture of art objects and in particular, stained glass windows. Although brittle, silicate glass is extremely durable, and many examples of glass fragments exist from early glass-making cultures, because glass can be formed or moulded into any shape, it has been traditionally used for vessels, bowls, vases, bottles, jars and drinking glasses. In its most solid forms it has also used for paperweights, marbles. Some objects historically were so commonly made of glass that they are simply called by the name of the material, such as drinking glasses. Porcelains and many polymer thermoplastics familiar from everyday use are glasses and these sorts of glasses can be made of quite different kinds of materials than silica, metallic alloys, ionic melts, aqueous solutions, molecular liquids, and polymers. For many applications, like glass bottles or eyewear, polymer glasses are a lighter alternative than traditional glass, silica is a common fundamental constituent of glass. In nature, vitrification of quartz occurs when lightning strikes sand, forming hollow, fused quartz is a glass made from chemically-pure SiO2. It has excellent resistance to shock, being able to survive immersion in water while red hot. However, its high melting-temperature and viscosity make it difficult to work with, normally, other substances are added to simplify processing. One is sodium carbonate, which lowers the transition temperature. The soda makes the glass water-soluble, which is undesirable, so lime, some magnesium oxide. The resulting glass contains about 70 to 74% silica by weight and is called a soda-lime glass, soda-lime glasses account for about 90% of manufactured glass. Most common glass contains other ingredients to change its properties, lead glass or flint glass is more brilliant because the increased refractive index causes noticeably more specular reflection and increased optical dispersion. Adding barium also increases the refractive index, iron can be incorporated into glass to absorb infrared energy, for example in heat absorbing filters for movie projectors, while cerium oxide can be used for glass that absorbs UV wavelengths
28.
Textile
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A textile or cloth is a flexible material consisting of a network of natural or artificial fibres. Yarn is produced by spinning raw fibres of wool, flax, cotton, hemp, Textiles are formed by weaving, knitting, crocheting, knotting, or felting. The words fabric and cloth are used in textile assembly trades as synonyms for textile, however, there are subtle differences in these terms in specialized usage. Textile refers to any material made of interlacing fibres, a fabric is a material made through weaving, knitting, spreading, crocheting, or bonding that may be used in production of further goods. Cloth may be used synonymously with fabric but is often a piece of fabric used for a specific purpose. The word textile is from Latin, from the adjective textilis, meaning woven, from textus, the word cloth derives from the Old English clað, meaning a cloth, woven or felted material to wrap around one, from Proto-Germanic kalithaz. The discovery of dyed flax fibres in a cave in the Republic of Georgia dated to 34,000 BCE suggests textile-like materials were made even in prehistoric times. The production of textiles is a craft whose speed and scale of production has been altered almost beyond recognition by industrialization, however, for the main types of textiles, plain weave, twill, or satin weave, there is little difference between the ancient and modern methods. Textiles have an assortment of uses, the most common of which are for clothing and for such as bags. In the household they are used in carpeting, upholstered furnishings, window shades, towels, coverings for tables, beds, and other flat surfaces, in the workplace they are used in industrial and scientific processes such as filtering. Textiles are used in traditional crafts such as sewing, quilting. Textiles for industrial purposes, and chosen for other than their appearance, are commonly referred to as technical textiles. Technical textiles include textile structures for applications, medical textiles, geotextiles, agrotextiles. In all these applications stringent performance requirements must be met, woven of threads coated with zinc oxide nanowires, laboratory fabric has been shown capable of self-powering nanosystems using vibrations created by everyday actions like wind or body movements. Fashion designers commonly rely on textile designs to set their fashion collections apart from others, armani, the late Gianni Versace, and Emilio Pucci can be easily recognized by their signature print driven designs. Textiles can be made from many materials and these materials come from four main sources, animal, plant, mineral, and synthetic. In the past, all textiles were made from natural fibres, including plant, animal, in the 20th century, these were supplemented by artificial fibres made from petroleum. Textiles are made in various strengths and degrees of durability, from the finest gossamer to the sturdiest canvas, microfibre refers to fibres made of strands thinner than one denier
29.
Tobacco
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Tobacco is a product prepared from the leaves of the tobacco plant by curing them. The plant is part of the genus Nicotiana and of the Solanaceae family, while more than 70 species of tobacco are known, the chief commercial crop is N. tabacum. The more potent variant N. rustica is also used around the world, Tobacco contains the alkaloid nicotine, which is a stimulant. Dried tobacco leaves are used for smoking in cigarettes, cigars, pipe tobacco. They can be consumed as snuff, chewing tobacco, dipping tobacco. Tobacco use is a factor for many diseases, especially those affecting the heart, liver. In 2008, the World Health Organization named tobacco as the single greatest preventable cause of death. The English word tobacco originates from the Spanish and Portuguese word tabaco, the precise origin of this word is disputed, but it is generally thought to have derived at least in part, from Taino, the Arawakan language of the Caribbean. In Taino, it was said to either a roll of tobacco leaves or to tabago. Tobacco has long used in the Americas, with some cultivation sites in Mexico dating back to 1400–1000 BC. Many Native American tribes have traditionally grown and used tobacco, traditionally, tobacco is seen as a gift from the Creator, with the ceremonial tobacco smoke carrying ones thoughts and prayers to the Creator. Following the arrival of the Europeans to the Americas, tobacco became popular as a trade item. Hernández de Boncalo, Spanish chronicler of the Indies, was the first European to bring seeds to the Old World in 1559 following orders of King Philip II of Spain. These seeds were planted in the outskirts of Toledo, more specifically in a known as Los Cigarrales named after the continuous plagues of cicadas. Before the development of lighter Virginia and white burley strains of tobacco, small quantities were smoked at a time, using a pipe like the midwakh or kiseru or smoking newly invented waterpipes such as the bong or the hookah. The alleged benefits of tobacco also account for its considerable success, Tobacco smoking, chewing, and snuffing became a major industry in Europe and its colonies by 1700. Tobacco has been a major crop in Cuba and in other parts of the Caribbean since the 18th century. In the late 19th century, cigarettes became popular, James Bonsack created a machine that automated cigarette production
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Food processing
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Food processing is the transformation of raw ingredients, by physical or chemical means into food, or of food into other forms. Food processing combines raw food ingredients to produce food products that can be easily prepared and served by the consumer. Salt-preservation was especially common for foods that constituted warrior and sailors diets until the introduction of canning methods and these tried and tested processing techniques remained essentially the same until the advent of the industrial revolution. Examples of ready-meals also date back to before the preindustrial revolution, both during ancient times and today in modern society these are considered processed foods. Modern food processing technology developed in the 19th and 20th centuries was developed in a part to serve military needs. Although initially expensive and somewhat hazardous due to the used in cans. Pasteurization, discovered by Louis Pasteur in 1864, improved the quality of preserved foods and introduced the wine, beer, in the late 20th century, products such as dried instant soups, reconstituted fruits and juices, and self cooking meals such as MRE food ration were developed. In western Europe and North America, the half of the 20th century witnessed a rise in the pursuit of convenience. Food processing companies marketed their products especially towards middle-class working wives, frozen foods found their success in sales of juice concentrates and TV dinners. Processors utilised the perceived value of time to appeal to the population. Benefits of food processing include toxin removal, preservation, easing marketing and distribution tasks, modern supermarkets would not exist without modern food processing techniques, and long voyages would not be possible. Processed foods are less susceptible to early spoilage than fresh foods and are better suited for long distance transportation from the source to the consumer. When they were first introduced, some processed foods helped to alleviate food shortages, processing can also reduce the incidence of food borne disease. Fresh materials, such as produce and raw meats, are more likely to harbour pathogenic micro-organisms capable of causing serious illnesses. The extremely varied modern diet is only possible on a wide scale because of food processing. Transportation of more exotic foods, as well as the elimination of much hard labour gives the modern eater easy access to a variety of food unimaginable to their ancestors. The act of processing can often improve the taste of food significantly, mass production of food is much cheaper overall than individual production of meals from raw ingredients. Therefore, a profit potential exists for the manufacturers and suppliers of processed food products
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Beverages
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A drink or beverage is a liquid intended for human consumption. In addition to their function of satisfying thirst, drinks play important roles in human culture. Common types of drinks include plain water, milk, juices, coffee, tea, in addition, alcoholic drinks such as wine, beer, and liquor, which contain the drug ethanol, have been part of human culture and development for 8,000 years. Non-alcoholic drinks often signify drinks that would normally contain alcohol, such as beer, the category includes drinks that have undergone an alcohol removal process such as non-alcoholic beers and de-alcoholized wines. When the human body becomes dehydrated it experiences the sensation of thirst and this craving of fluids results in an instinctive need to drink. Thirst is regulated by the hypothalamus in response to changes in the bodys electrolyte levels. The complete elimination of drinks, i. e. water, Water and milk have been basic drinks throughout history. As water is essential for life, it has also been the carrier of many diseases, as mankind evolved, new techniques were discovered to create drinks from the plants that were native to their areas. The earliest archaeological evidence of wine production yet found has been at sites in Georgia, beer may have been known in Neolithic Europe as far back as 3000 BCE, and was mainly brewed on a domestic scale. The invention of beer has been argued to be responsible for humanitys ability to develop technology, tea likely originated in Yunnan, China during the Shang Dynasty as a medicinal drink. Drinking has been a part of socialising throughout the centuries. In Ancient Greece, a gathering for the purpose of drinking was known as a symposium. The purpose of these gatherings could be anything from serious discussions to direct indulgence, in Ancient Rome, a similar concept of a convivium took place regularly. Many early societies considered alcohol a gift from the gods, leading to the creation of such as Dionysus. Other religions forbid, discourage, or restrict the drinking of alcoholic drinks for various reasons, in some regions with a dominant religion the production, sale, and consumption of alcoholic drinks is forbidden to everybody, regardless of religion. Toasting is a method of honouring a person or wishing good will by taking a drink, another tradition is that of the loving cup, at weddings or other celebrations such as sports victories a group will share a drink in a large receptacle, shared by everyone until empty. In East Africa and Yemen, coffee was used in religious ceremonies. As these ceremonies conflicted with the beliefs of the Christian church, the drink was also banned in Ottoman Turkey during the 17th century for political reasons and was associated with rebellious political activities in Europe
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Electricity
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Electricity is the set of physical phenomena associated with the presence of electric charge. Although initially considered a separate to magnetism, since the development of Maxwells Equations both are recognized as part of a single phenomenon, electromagnetism. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges, in addition, electricity is at the heart of many modern technologies. The presence of a charge, which can be either positive or negative. On the other hand, the movement of charges, which is known as electric current. When a charge is placed in a location with non-zero electric field, the magnitude of this force is given by Coulombs Law. Thus, if that charge were to move, the field would be doing work on the electric charge. Electrical phenomena have been studied since antiquity, though progress in theoretical understanding remained slow until the seventeenth and eighteenth centuries. Even then, practical applications for electricity were few, and it would not be until the nineteenth century that engineers were able to put it to industrial and residential use. The rapid expansion in electrical technology at this time transformed industry, electricitys extraordinary versatility means it can be put to an almost limitless set of applications which include transport, heating, lighting, communications, and computation. Electrical power is now the backbone of modern industrial society, long before any knowledge of electricity existed, people were aware of shocks from electric fish. Ancient Egyptian texts dating from 2750 BCE referred to these fish as the Thunderer of the Nile, Electric fish were again reported millennia later by ancient Greek, Roman and Arabic naturalists and physicians. Patients suffering from such as gout or headache were directed to touch electric fish in the hope that the powerful jolt might cure them. Ancient cultures around the Mediterranean knew that certain objects, such as rods of amber, Thales was incorrect in believing the attraction was due to a magnetic effect, but later science would prove a link between magnetism and electricity. He coined the New Latin word electricus to refer to the property of attracting small objects after being rubbed and this association gave rise to the English words electric and electricity, which made their first appearance in print in Thomas Brownes Pseudodoxia Epidemica of 1646. Further work was conducted by Otto von Guericke, Robert Boyle, Stephen Gray, in the 18th century, Benjamin Franklin conducted extensive research in electricity, selling his possessions to fund his work. In June 1752 he is reputed to have attached a key to the bottom of a dampened kite string. A succession of jumping from the key to the back of his hand showed that lightning was indeed electrical in nature
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Lumber
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Lumber, or timber is wood that has been processed into beams and planks, a stage in the process of wood production. Lumber may also refer to currently un-needed furniture, as in Lumber room, or an awkward gait, ultimately derived from the look of unfashionable, Lumber may be supplied either rough-sawn, or surfaced on one or more of its faces. Besides pulpwood, rough lumber is the raw material for furniture-making and it is available in many species, usually hardwoods, but it is also readily available in softwoods, such as white pine and red pine, because of their low cost. Lumber is mainly used for structural purposes but has other uses as well. It is classified more commonly as a softwood than as a hardwood, in Australia, Ireland, New Zealand and Britain, the term timber describes sawn wood products, such as floor boards. In the United States and Canada, generally timber describes standing or felled trees, before they are milled into boards, Timber there also describes sawn lumber not less than 5 inches in its smallest dimension. The latter includes the often partly finished lumber used in timber-frame construction, remanufactured lumber is the result of secondary or tertiary processing/cutting of previously milled lumber. Specifically, it is cut for industrial or wood-packaging use. Lumber is cut by ripsaw or resaw to create dimensions that are not usually processed by a primary sawmill, resawing is the splitting of 1-inch through 12-inch hardwood or softwood lumber into two or more thinner pieces of full-length boards. For example, splitting a ten-foot 2×4 into two ten-foot 1×4s is considered resawing, structural lumber may also be produced from recycled plastic and new plastic stock. Its introduction has been opposed by the forestry industry. Blending fiberglass in plastic lumber enhances its strength, durability, logs are converted into timber by being sawn, hewn, or split. Sawing with a rip saw is the most common method, because sawing allows logs of lower quality, with grain and large knots. There are various types of sawing, Plain sawn —A log sawn through without adjusting the position of the log, quarter sawn and rift sawn—These terms have been confused in history but generally mean lumber sawn so the annual rings are reasonably perpendicular to the sides of the lumber. Boxed heart—The pith remains within the piece with some allowance for exposure, heart center—the center core of a log. Free of heart center —A side-cut timber without any pith, free of knots —No knots are present. Dimensional lumber is lumber that is cut to standardized width and depth, carpenters extensively use dimensional lumber in framing wooden buildings. Common sizes include 2×4, 2×6, and 4×4, the length of a board is usually specified separately from the width and depth
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Cotton
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Cotton is a soft, fluffy staple fiber that grows in a boll, or protective case, around the seeds of the cotton plants of the genus Gossypium in the mallow family Malvaceae. The fiber is almost pure cellulose, under natural conditions, the cotton bolls will tend to increase the dispersal of the seeds. The plant is a native to tropical and subtropical regions around the world, including the Americas, Africa. The greatest diversity of wild species is found in Mexico, followed by Australia. Cotton was independently domesticated in the Old and New Worlds, the fiber is most often spun into yarn or thread and used to make a soft, breathable textile. Current estimates for world production are about 25 million tonnes or 110 million bales annually, China is the worlds largest producer of cotton, but most of this is used domestically. The United States has been the largest exporter for many years, in the United States, cotton is usually measured in bales, which measure approximately 0.48 cubic meters and weigh 226.8 kilograms. Cotton cultivation in the region is dated to the Indus Valley Civilization, the Indus cotton industry was well-developed and some methods used in cotton spinning and fabrication continued to be used until the industrialization of India. Between 2000 and 1000 BC cotton became widespread across much of India, for example, it has been found at the site of Hallus in Karnataka dating from around 1000 BC. Cotton fabrics discovered in a cave near Tehuacán, Mexico have been dated to around 5800 BC, the domestication of Gossypium hirsutum in Mexico is dated between 3400 and 2300 BC. Cotton was grown upriver, made into nets, and traded with fishing villages along the coast for supplies of fish. The Spanish who came to Mexico and Peru in the early 16th century found the people growing cotton and this may be a reference to tree cotton, Gossypium arboreum, which is a native of the Indian subcontinent. According to the Columbia Encyclopedia, Cotton has been spun, woven and it clothed the people of ancient India, Egypt, and China. Hundreds of years before the Christian era, cotton textiles were woven in India with matchless skill, in Iran, the history of cotton dates back to the Achaemenid era, however, there are few sources about the planting of cotton in pre-Islamic Iran. The planting of cotton was common in Merv, Ray and Pars of Iran, in Persian poets poems, especially Ferdowsis Shahname, there are references to cotton. Marco Polo refers to the products of Persia, including cotton. John Chardin, a French traveler of the 17th century who visited the Safavid Persia, during the Han dynasty, cotton was grown by Chinese peoples in the southern Chinese province of Yunnan. Mohamed Ali Pasha accepted the proposition and granted himself the monopoly on the sale and export of cotton in Egypt, and later dictated cotton should be grown in preference to other crops
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Prawn
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Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs, some of which can be eaten. Shrimp that fall in this category often belong to the suborder Dendrobranchiata, in North America, the term is used less frequently, typically for freshwater shrimp. The terms shrimp and prawn themselves lack scientific standing, over the years, the way shrimp and prawn are used has changed, and nowadays the terms are almost interchangeable. In the United Kingdom, prawn is more common on menus than shrimp, the term prawn also loosely describes any large shrimp, especially those at 15 to the pound. The terms shrimp and prawn are common names, not scientific names and they are vernacular or colloquial terms which lack the formal definition of scientific terms. They are not taxa, but are terms of convenience with little circumscriptional significance, there is no reason to avoid using the terms shrimp or prawn when convenient, but it is important not to confuse them with the names or relationships of actual taxa. According to the crustacean taxonomist Tin-Yam Chan, The terms shrimp, a lot of confusion surrounds the scope of the term shrimp. Part of the confusion originates with the association of smallness and that creates problems with shrimp-like species that are not small. The expression jumbo shrimp can be viewed as an oxymoron, a problem that doesnt exist with the commercial designation jumbo prawns. It is not clear where the term originated, but early forms of the word surfaced in England in the early 15th century as prayne, praine and prane. According to the linguist Anatoly Liberman it is unclear how shrimp, in English, no Germanic language associates the shrimp with its size. It remains unclear in what circumstances the name was applied to the crustacean, taxonomic studies in Europe on shrimp and prawns were shaped by the common shrimp and the common prawn, both found in huge numbers along the European coastlines. The common shrimp, Crangon crangon was categorised in 1758 by Carl Linnaeus, the common shrimp is a small burrowing species aligned with the notion of a shrimp as being something small, whereas the common prawn is much larger. The terms true shrimp or true prawn are used to mean what a particular person thinks is a shrimp or prawn. This varies with the using the terms. But such terms are not normally used in the literature, because the terms shrimp. Over the years the way shrimp and prawn are used has changed, although from time to time some biologists declare that certain common names should be confined to specific taxa, the popular use of these names seems to continue unchanged. The terms shrimp and prawn originated in Great Britain, in the use of common names for species, shrimp is applied to smaller species, particularly species that are dorsoventrally depressed with a shorter rostrum
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Cashew
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The cashew tree is a tropical evergreen tree that produces the cashew nut and the cashew apple. It can grow as high as 14 m, but the dwarf cashew, growing up to 6 m, has proved profitable, with earlier maturity. The cashew nut, often called a cashew, is widely consumed. It is eaten on its own, used in recipes, or processed into cashew cheese or cashew butter, the shell of the cashew seed yields derivatives that can be used in many applications from lubricants to paints. The cashew apple is a reddish to yellow fruit, whose pulp can be processed into a sweet. The species is native to northeastern Brazil. Major production of cashews occurs in Vietnam, Nigeria, India and its English name derives from the Portuguese name for the fruit of the cashew tree caju, which itself is derived from the Tupian word acajú, literally meaning nut that produces itself. The generic name Anacardium, originally from the Greek, refers to the location of the seed outside the core or heart of the fruit. A mid-seventeenth century ethnographic painting by Albert Eckhout, who accompanied Dutch governor-general Johan Maurits, the cashew tree is large and evergreen, growing to 14 m tall, with a short, often irregularly shaped trunk. The leaves are arranged, leathery textured, elliptic to obovate, 4–22 cm long and 2–15 cm broad. The flowers are produced in a panicle or corymb up to 26 cm long, each flower is small, pale green at first, then turning reddish, with five slender, acute petals 7–15 mm long. The largest cashew tree in the covers a area around 7,500 m2, it is located in Natal, Rio Grande do Norte. The fruit of the tree is an accessory fruit. What appears to be the fruit is an oval or pear-shaped structure, a hypocarpium, that develops from the pedicel, called the cashew apple, better known in Central America as marañón, it ripens into a yellow and/or red structure about 5–11 cm long. It is edible, and has a sweet smell and a sweet taste. The pulp of the apple is very juicy, but the skin is fragile. The true fruit of the tree is a kidney or boxing-glove shaped drupe that grows at the end of the cashew apple. The drupe develops first on the tree, and then the pedicel expands to become the cashew apple, within the true fruit is a single seed, which is often considered a nut, in the culinary sense
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Sugar
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Sugar is the generic name for sweet, soluble carbohydrates, many of which are used in food. There are various types of derived from different sources. Simple sugars are called monosaccharides and include glucose, fructose, the table sugar or granulated sugar most customarily used as food is sucrose, a disaccharide of glucose and fructose. Sugar is used in prepared foods and it is added to some foods, in the body, sucrose is hydrolysed into the simple sugars fructose and glucose. Other disaccharides include maltose from malted grain, and lactose from milk, longer chains of sugars are called oligosaccharides or polysaccharides. Some other chemical substances, such as glycerol may also have a sweet taste, low-calorie food substitutes for sugar, described as artificial sweeteners, include aspartame and sucralose, a chlorinated derivative of sucrose. Sugars are found in the tissues of most plants and are present in sufficient concentrations for efficient commercial extraction in sugarcane, the world production of sugar in 2011 was about 168 million tonnes. The average person consumes about 24 kilograms of sugar each year, equivalent to over 260 food calories per person, since the latter part of the twentieth century, it has been questioned whether a diet high in sugars, especially refined sugars, is good for human health. Sugar has been linked to obesity, and suspected of, or fully implicated as a cause in the occurrence of diabetes, cardiovascular disease, dementia, macular degeneration, the etymology reflects the spread of the commodity. The English word sugar ultimately originates from the Sanskrit शर्करा, via Arabic سكر as granular or candied sugar, the contemporary Italian word is zucchero, whereas the Spanish and Portuguese words, azúcar and açúcar, respectively, have kept a trace of the Arabic definite article. The Old French word is zuchre and the contemporary French, sucre, the earliest Greek word attested is σάκχαρις. The English word jaggery, a brown sugar made from date palm sap or sugarcane juice, has a similar etymological origin – Portuguese jagara from the Sanskrit शर्करा. Sugar has been produced in the Indian subcontinent since ancient times and it was not plentiful or cheap in early times and honey was more often used for sweetening in most parts of the world. Originally, people chewed raw sugarcane to extract its sweetness, sugarcane was a native of tropical South Asia and Southeast Asia. Different species seem to have originated from different locations with Saccharum barberi originating in India and S. edule, one of the earliest historical references to sugarcane is in Chinese manuscripts dating back to 8th century BC that state that the use of sugarcane originated in India. Sugar was found in Europe by the 1st century AD, but only as an imported medicine and it is a kind of honey found in cane, white as gum, and it crunches between the teeth. It comes in lumps the size of a hazelnut, sugar is used only for medical purposes. Sugar remained relatively unimportant until the Indians discovered methods of turning sugarcane juice into granulated crystals that were easier to store, crystallized sugar was discovered by the time of the Imperial Guptas, around the 5th century AD
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Citrus
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Citrus is a genus of flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops like oranges, lemons, grapefruit, pomelo, the most recent research indicates an origin in Australia, New Caledonia and New Guinea. Citrus fruit has been cultivated in an area since ancient times. At various times, citrus plants were thought to be native to Asia, Europe, but the European oranges were originally brought from India at around the time of Alexander the Great, and the native oranges of Florida actually originated with the Spanish Conquistadors. The lemon reached Europe during the time of classical Rome, the generic name originated from Latin, where it referred to either the plant now known as Citron or a conifer tree. It is somehow related to the ancient Greek word for cedar and this may be due to perceived similarities in the smell of citrus leaves and fruit with that of cedar. Collectively, Citrus fruits and plants are known by the Romance loanword agrumes. The large citrus fruit of today evolved originally from small, edible berries over millions of years, Citrus plants diverged from a common ancestor about 15 million years ago, which was about when it diverged from the closely related severinia, for example the Chinese box orange. These estimates are made using genetic mapping of plant chloroplasts, the three original species in the citrus genus that have been hybridized into most modern commercial citrus fruit are the mandarin orange, pummelo, and citron. Within the last few years, all common citrus fruits were created by crossing those original species. Something similar has occurred with the array of chili peppers originating in the hybridization of a few initial species. Natural and cultivated citrus hybrids include commercially important fruit such as oranges, grapefruit, lemons, limes, apart from these four core citrus species, there are Australian limes and the recently discovered Mangshanyegan. Kumquats and Clymenia sp. are now considered to belong within the citrus genus. Trifoliate orange, which is used as commercial rootstock, is an outgroup. Phylogenetic analysis suggests the species of Oxanthera from New Caledonia should be transferred to the genus Citrus and these plants are large shrubs or small to moderate-sized trees, reaching 5–15 m tall, with spiny shoots and alternately arranged evergreen leaves with an entire margin. The flowers are solitary or in corymbs, each flower 2–4 cm diameter, with five white petals and numerous stamens. The fruit is a hesperidium, a berry, globose to elongated, 4–30 cm long and 4–20 cm diameter. The outermost layer of the pericarp is a called the flavedo
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South Africa
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South Africa, officially the Republic of South Africa, is the southernmost country in Africa. South Africa is the 25th-largest country in the world by land area and it is the southernmost country on the mainland of the Old World or the Eastern Hemisphere. About 80 percent of South Africans are of Sub-Saharan African ancestry, divided among a variety of ethnic groups speaking different Bantu languages, the remaining population consists of Africas largest communities of European, Asian, and multiracial ancestry. South Africa is a multiethnic society encompassing a variety of cultures, languages. Its pluralistic makeup is reflected in the recognition of 11 official languages. The country is one of the few in Africa never to have had a coup détat, however, the vast majority of black South Africans were not enfranchised until 1994. During the 20th century, the black majority sought to recover its rights from the dominant white minority, with this struggle playing a role in the countrys recent history. The National Party imposed apartheid in 1948, institutionalising previous racial segregation, since 1994, all ethnic and linguistic groups have held political representation in the countrys democracy, which comprises a parliamentary republic and nine provinces. South Africa is often referred to as the Rainbow Nation to describe the multicultural diversity. The World Bank classifies South Africa as an economy. Its economy is the second-largest in Africa, and the 34th-largest in the world, in terms of purchasing power parity, South Africa has the seventh-highest per capita income in Africa. However, poverty and inequality remain widespread, with about a quarter of the population unemployed, nevertheless, South Africa has been identified as a middle power in international affairs, and maintains significant regional influence. The name South Africa is derived from the geographic location at the southern tip of Africa. Upon formation the country was named the Union of South Africa in English, since 1961 the long form name in English has been the Republic of South Africa. In Dutch the country was named Republiek van Zuid-Afrika, replaced in 1983 by the Afrikaans Republiek van Suid-Afrika, since 1994 the Republic has had an official name in each of its 11 official languages. Mzansi, derived from the Xhosa noun umzantsi meaning south, is a name for South Africa. South Africa contains some of the oldest archaeological and human fossil sites in the world, extensive fossil remains have been recovered from a series of caves in Gauteng Province. The area is a UNESCO World Heritage site and has termed the Cradle of Humankind
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Italy
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Italy, officially the Italian Republic, is a unitary parliamentary republic in Europe. Located in the heart of the Mediterranean Sea, Italy shares open land borders with France, Switzerland, Austria, Slovenia, San Marino, Italy covers an area of 301,338 km2 and has a largely temperate seasonal and Mediterranean climate. Due to its shape, it is referred to in Italy as lo Stivale. With 61 million inhabitants, it is the fourth most populous EU member state, the Italic tribe known as the Latins formed the Roman Kingdom, which eventually became a republic that conquered and assimilated other nearby civilisations. The legacy of the Roman Empire is widespread and can be observed in the distribution of civilian law, republican governments, Christianity. The Renaissance began in Italy and spread to the rest of Europe, bringing a renewed interest in humanism, science, exploration, Italian culture flourished at this time, producing famous scholars, artists and polymaths such as Leonardo da Vinci, Galileo, Michelangelo and Machiavelli. The weakened sovereigns soon fell victim to conquest by European powers such as France, Spain and Austria. Despite being one of the victors in World War I, Italy entered a period of economic crisis and social turmoil. The subsequent participation in World War II on the Axis side ended in defeat, economic destruction. Today, Italy has the third largest economy in the Eurozone and it has a very high level of human development and is ranked sixth in the world for life expectancy. The country plays a prominent role in regional and global economic, military, cultural and diplomatic affairs, as a reflection of its cultural wealth, Italy is home to 51 World Heritage Sites, the most in the world, and is the fifth most visited country. The assumptions on the etymology of the name Italia are very numerous, according to one of the more common explanations, the term Italia, from Latin, Italia, was borrowed through Greek from the Oscan Víteliú, meaning land of young cattle. The bull was a symbol of the southern Italic tribes and was often depicted goring the Roman wolf as a defiant symbol of free Italy during the Social War. Greek historian Dionysius of Halicarnassus states this account together with the legend that Italy was named after Italus, mentioned also by Aristotle and Thucydides. The name Italia originally applied only to a part of what is now Southern Italy – according to Antiochus of Syracuse, but by his time Oenotria and Italy had become synonymous, and the name also applied to most of Lucania as well. The Greeks gradually came to apply the name Italia to a larger region, excavations throughout Italy revealed a Neanderthal presence dating back to the Palaeolithic period, some 200,000 years ago, modern Humans arrived about 40,000 years ago. Other ancient Italian peoples of undetermined language families but of possible origins include the Rhaetian people and Cammuni. Also the Phoenicians established colonies on the coasts of Sardinia and Sicily, the Roman legacy has deeply influenced the Western civilisation, shaping most of the modern world
41.
China
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China, officially the Peoples Republic of China, is a unitary sovereign state in East Asia and the worlds most populous country, with a population of over 1.381 billion. The state is governed by the Communist Party of China and its capital is Beijing, the countrys major urban areas include Shanghai, Guangzhou, Beijing, Chongqing, Shenzhen, Tianjin and Hong Kong. China is a power and a major regional power within Asia. Chinas landscape is vast and diverse, ranging from forest steppes, the Himalaya, Karakoram, Pamir and Tian Shan mountain ranges separate China from much of South and Central Asia. The Yangtze and Yellow Rivers, the third and sixth longest in the world, respectively, Chinas coastline along the Pacific Ocean is 14,500 kilometers long and is bounded by the Bohai, Yellow, East China and South China seas. China emerged as one of the worlds earliest civilizations in the basin of the Yellow River in the North China Plain. For millennia, Chinas political system was based on hereditary monarchies known as dynasties, in 1912, the Republic of China replaced the last dynasty and ruled the Chinese mainland until 1949, when it was defeated by the communist Peoples Liberation Army in the Chinese Civil War. The Communist Party established the Peoples Republic of China in Beijing on 1 October 1949, both the ROC and PRC continue to claim to be the legitimate government of all China, though the latter has more recognition in the world and controls more territory. China had the largest economy in the world for much of the last two years, during which it has seen cycles of prosperity and decline. Since the introduction of reforms in 1978, China has become one of the worlds fastest-growing major economies. As of 2016, it is the worlds second-largest economy by nominal GDP, China is also the worlds largest exporter and second-largest importer of goods. China is a nuclear weapons state and has the worlds largest standing army. The PRC is a member of the United Nations, as it replaced the ROC as a permanent member of the U. N. Security Council in 1971. China is also a member of numerous formal and informal multilateral organizations, including the WTO, APEC, BRICS, the Shanghai Cooperation Organization, the BCIM, the English name China is first attested in Richard Edens 1555 translation of the 1516 journal of the Portuguese explorer Duarte Barbosa. The demonym, that is, the name for the people, Portuguese China is thought to derive from Persian Chīn, and perhaps ultimately from Sanskrit Cīna. Cīna was first used in early Hindu scripture, including the Mahābhārata, there are, however, other suggestions for the derivation of China. The official name of the state is the Peoples Republic of China. The shorter form is China Zhōngguó, from zhōng and guó and it was then applied to the area around Luoyi during the Eastern Zhou and then to Chinas Central Plain before being used as an occasional synonym for the state under the Qing
42.
Belgium
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Belgium, officially the Kingdom of Belgium, is a sovereign state in Western Europe bordered by France, the Netherlands, Germany, Luxembourg, and the North Sea. It is a small, densely populated country which covers an area of 30,528 square kilometres and has a population of about 11 million people. Additionally, there is a group of German-speakers who live in the East Cantons located around the High Fens area. Historically, Belgium, the Netherlands and Luxembourg were known as the Low Countries, the region was called Belgica in Latin, after the Roman province of Gallia Belgica. From the end of the Middle Ages until the 17th century, today, Belgium is a federal constitutional monarchy with a parliamentary system of governance. It is divided into three regions and three communities, that exist next to each other and its two largest regions are the Dutch-speaking region of Flanders in the north and the French-speaking southern region of Wallonia. The Brussels-Capital Region is a bilingual enclave within the Flemish Region. A German-speaking Community exists in eastern Wallonia, Belgiums linguistic diversity and related political conflicts are reflected in its political history and complex system of governance, made up of six different governments. Upon its independence, declared in 1830, Belgium participated in the Industrial Revolution and, during the course of the 20th century, possessed a number of colonies in Africa. This continuing antagonism has led to several far-reaching reforms, resulting in a transition from a unitary to a federal arrangement during the period from 1970 to 1993. Belgium is also a member of the Eurozone, NATO, OECD and WTO. Its capital, Brussels, hosts several of the EUs official seats as well as the headquarters of major international organizations such as NATO. Belgium is also a part of the Schengen Area, Belgium is a developed country, with an advanced high-income economy and is categorized as very high in the Human Development Index. A gradual immigration by Germanic Frankish tribes during the 5th century brought the area under the rule of the Merovingian kings, a gradual shift of power during the 8th century led the kingdom of the Franks to evolve into the Carolingian Empire. Many of these fiefdoms were united in the Burgundian Netherlands of the 14th and 15th centuries, the Eighty Years War divided the Low Countries into the northern United Provinces and the Southern Netherlands. The latter were ruled successively by the Spanish and the Austrian Habsburgs and this was the theatre of most Franco-Spanish and Franco-Austrian wars during the 17th and 18th centuries. The reunification of the Low Countries as the United Kingdom of the Netherlands occurred at the dissolution of the First French Empire in 1815, although the franchise was initially restricted, universal suffrage for men was introduced after the general strike of 1893 and for women in 1949. The main political parties of the 19th century were the Catholic Party, French was originally the single official language adopted by the nobility and the bourgeoisie
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Spain
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By population, Spain is the sixth largest in Europe and the fifth in the European Union. Spains capital and largest city is Madrid, other urban areas include Barcelona, Valencia, Seville, Bilbao. Modern humans first arrived in the Iberian Peninsula around 35,000 years ago, in the Middle Ages, the area was conquered by Germanic tribes and later by the Moors. Spain is a democracy organised in the form of a government under a constitutional monarchy. It is a power and a major developed country with the worlds fourteenth largest economy by nominal GDP. Jesús Luis Cunchillos argues that the root of the span is the Phoenician word spy. Therefore, i-spn-ya would mean the land where metals are forged, two 15th-century Spanish Jewish scholars, Don Isaac Abravanel and Solomon ibn Verga, gave an explanation now considered folkloric. Both men wrote in two different published works that the first Jews to reach Spain were brought by ship by Phiros who was confederate with the king of Babylon when he laid siege to Jerusalem. This man was a Grecian by birth, but who had given a kingdom in Spain. He became related by marriage to Espan, the nephew of king Heracles, Heracles later renounced his throne in preference for his native Greece, leaving his kingdom to his nephew, Espan, from whom the country of España took its name. Based upon their testimonies, this eponym would have already been in use in Spain by c.350 BCE, Iberia enters written records as a land populated largely by the Iberians, Basques and Celts. Early on its coastal areas were settled by Phoenicians who founded Western Europe´s most ancient cities Cadiz, Phoenician influence expanded as much of the Peninsula was eventually incorporated into the Carthaginian Empire, becoming a major theater of the Punic Wars against the expanding Roman Empire. After an arduous conquest, the peninsula came fully under Roman Rule, during the early Middle Ages it came under Germanic rule but later, much of it was conquered by Moorish invaders from North Africa. In a process took centuries, the small Christian kingdoms in the north gradually regained control of the peninsula. The last Moorish kingdom fell in the same year Columbus reached the Americas, a global empire began which saw Spain become the strongest kingdom in Europe, the leading world power for a century and a half, and the largest overseas empire for three centuries. Continued wars and other problems led to a diminished status. The Napoleonic invasions of Spain led to chaos, triggering independence movements that tore apart most of the empire, eventually democracy was peacefully restored in the form of a parliamentary constitutional monarchy. Spain joined the European Union, experiencing a renaissance and steady economic growth
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Egypt
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Egypt, officially the Arab Republic of Egypt, is a transcontinental country spanning the northeast corner of Africa and southwest corner of Asia by a land bridge formed by the Sinai Peninsula. Egypt is a Mediterranean country bordered by the Gaza Strip and Israel to the northeast, the Gulf of Aqaba to the east, the Red Sea to the east and south, Sudan to the south, and Libya to the west. Across the Gulf of Aqaba lies Jordan, and across from the Sinai Peninsula lies Saudi Arabia, although Jordan and it is the worlds only contiguous Afrasian nation. Egypt has among the longest histories of any country, emerging as one of the worlds first nation states in the tenth millennium BC. Considered a cradle of civilisation, Ancient Egypt experienced some of the earliest developments of writing, agriculture, urbanisation, organised religion and central government. One of the earliest centres of Christianity, Egypt was Islamised in the century and remains a predominantly Muslim country. With over 92 million inhabitants, Egypt is the most populous country in North Africa and the Arab world, the third-most populous in Africa, and the fifteenth-most populous in the world. The great majority of its people live near the banks of the Nile River, an area of about 40,000 square kilometres, the large regions of the Sahara desert, which constitute most of Egypts territory, are sparsely inhabited. About half of Egypts residents live in areas, with most spread across the densely populated centres of greater Cairo, Alexandria. Modern Egypt is considered to be a regional and middle power, with significant cultural, political, and military influence in North Africa, the Middle East and the Muslim world. Egypts economy is one of the largest and most diversified in the Middle East, Egypt is a member of the United Nations, Non-Aligned Movement, Arab League, African Union, and Organisation of Islamic Cooperation. Miṣr is the Classical Quranic Arabic and modern name of Egypt. The name is of Semitic origin, directly cognate with other Semitic words for Egypt such as the Hebrew מִצְרַיִם, the oldest attestation of this name for Egypt is the Akkadian
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Fuel
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A fuel is any material that can be made to react with other substances so that it releases chemical or nuclear energy as heat or to be used for work. The concept was applied solely to those materials capable of releasing chemical energy but has since also been applied to other sources of heat energy such as nuclear energy. The heat energy released by reactions of fuels is converted into mechanical energy via a heat engine, other times the heat itself is valued for warmth, cooking, or industrial processes, as well as the illumination that comes with combustion. Fuels are also used in the cells of organisms in a known as cellular respiration. Hydrocarbons and related oxygen-containing molecules are by far the most common source of fuel used by humans, fuels are contrasted with other substances or devices storing potential energy, such as those that directly release electrical energy or mechanical energy. The first known use of fuel was the combustion of wood or sticks by Homo erectus near 2,000,000 years ago, throughout most of human history fuels derived from plants or animal fat were only used by humans. Charcoal, a derivative, has been used since at least 6,000 BCE for melting metals. It was only supplanted by coke, derived from coal, as European forests started to become depleted around the 18th century, charcoal briquettes are now commonly used as a fuel for barbecue cooking. Coal was first used as a fuel around 1000 BCE in China, coal was later used to drive ships and locomotives. By the 19th century, gas extracted from coal was being used for lighting in London. In the 20th and 21st centuries, the use of coal is to generate electricity. Fossil fuels were rapidly adopted during the revolution, because they were more concentrated and flexible than traditional energy sources. They have become a part of our contemporary society, with most countries in the world burning fossil fuels in order to produce power. Currently the trend has been towards renewable fuels, such as biofuels like alcohols, chemical fuels are substances that release energy by reacting with substances around them, most notably by the process of combustion. Most of the energy released in combustion was not stored in the chemical bonds of the fuel. Chemical fuels are divided in two ways, first, by their physical properties, as a solid, liquid or gas. Secondly, on the basis of their occurrence, primary and secondary, solid fuels include wood, charcoal, peat, coal, Hexamine fuel tablets, and pellets made from wood, corn, wheat, rye and other grains. Solid-fuel rocket technology also uses solid fuel, solid fuels have been used by humanity for many years to create fire
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Machinery
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Machines employ power to achieve desired forces and movement. A machine has a source and actuators that generate forces and movement. Modern machines often include computers and sensors that monitor performance and plan movement, the meaning of the word machine is traced by the Oxford English Dictionary to an independently functioning structure and by Merriam-Webster Dictionary to something that has been constructed. This includes human design into the meaning of machine, similarly Merriam-Webster Dictionary defines mechanical as relating to machinery or tools. Power flow through a machine provides a way to understand the performance of devices ranging from levers and gear trains to automobiles, notice that forces and motion combine to define power. More recently, Uicker et al. stated that a machine is a device for applying power or changing its direction, and McCarthy and Soh describe a machine as a system that generally consists of a power source and a mechanism for the controlled use of this power. The idea that a machine can be decomposed into simple movable elements led Archimedes to define the lever, pulley, by the time of the Renaissance this list increased to include the wheel and axle, wedge and inclined plane. The modern approach to characterizing machines focusses on the components that allow movement, wedge, Perhaps the first example of a device designed to manage power is the hand axe, also see biface and Olorgesailie. A hand axe is made by chipping stone, generally flint, to form a bifacial edge, a wedge is a simple machine that transforms lateral force and movement of the tool into a transverse splitting force and movement of the workpiece. The available power is limited by the effort of the using the tool, but because power is the product of force and movement. This amplification, or mechanical advantage is the ratio of the speed to output speed. For a wedge this is given by 1/tanα, where α is the tip angle, the faces of a wedge are modeled as straight lines to form a sliding or prismatic joint. Lever, The lever is another important and simple device for managing power and this is a body that pivots on a fulcrum. The fulcrum of a lever is modeled as a hinged or revolute joint, wheel, The wheel is clearly an important early machine, such as the chariot. A wheel uses the law of the lever to reduce the force needed to overcome friction when pulling a load. To see this notice that the associated with pulling a load on the ground is approximately the same as the friction in a simple bearing that supports the load on the axle of a wheel. However, the forms a lever that magnifies the pulling force so that it overcomes the frictional resistance in the bearing. Natural forces such as wind and water powered larger mechanical systems, waterwheels appeared around the world around 300 BC to use flowing water to generate rotary motion, which was applied to milling grain, and powering lumber, machining and textile operations
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Vehicle
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A vehicle is a mobile machine that transports people or cargo. Typical vehicles include wagons, bicycles, motor vehicles, railed vehicles, Land vehicles are classified broadly by what is used to apply steering and drive forces against the ground, wheeled, tracked, railed or skied. ISO 3833-1977 is the standard, also used in legislation, for road vehicles types, terms. Boats were used between 4000 BC-3000 BC in Sumer, ancient Egypt and in the Indian Ocean, there is evidence of camel pulled wheeled vehicles about 3000–4000 BC. Wheeled vehicles pulled by men and animals ran in grooves in limestone, in 200 CE, Ma Jun built a south-pointing chariot, a vehicle with an early form of guidance system. Railways began reappearing in Europe after the Dark Ages, the earliest known record of a railway in Europe from this period is a stained-glass window in the Minster of Freiburg im Breisgau dating from around 1350. In 1515, Cardinal Matthäus Lang wrote a description of the Reisszug, the line originally used wooden rails and a hemp haulage rope and was operated by human or animal power, through a treadwheel. 1769 Nicolas-Joseph Cugnot is often credited with building the first self-propelled mechanical vehicle or automobile in 1769. In Russia, in the 1780s, Ivan Kulibin developed a human-pedalled, three-wheeled carriage with modern features such as a flywheel, brake, gear box and bearings, however and it was introduced by Drais to the public in Mannheim in summer 1817. 1903 Wright brothers flew the first controlled, powered aircraft 1907 First helicopters Gyroplane no.1, there are over 1 billion bicycles in use worldwide. In 2002 there were an estimated 590 million cars and 205 million motorcycles in service in the world, at least 500 million Chinese Flying Pigeon bicycles have been made, more than an other single model of vehicle. The most-produced model of vehicle is the Honda Super Cub motorcycle. The most-produced car model is the Toyota Corolla, with at least 35 million made by 2010, by far, most vehicles use wheels which employ the principle of rolling to enable displacement with very little rolling friction. It is essential that a vehicle have a source of energy to drive it, energy can be extracted from the surrounding environment, as in the case of a sailboat, a solar-powered car or a streetcar. Energy can also be stored, in any form, provided it can be converted on demand, the most common type of energy source is fuel. Batteries also facilitate the use of motors, which have their own advantages. On the other hand, batteries have low densities, short service life, poor performance at extreme temperatures. Like fuel, batteries store energy and can cause burns
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Metal
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A metal is a material that is typically hard, opaque, shiny, and has good electrical and thermal conductivity. Metals are generally malleable—that is, they can be hammered or pressed permanently out of shape without breaking or cracking—as well as fusible and ductile, about 91 of the 118 elements in the periodic table are metals, the others are nonmetals or metalloids. Some elements appear in both metallic and non-metallic forms, astrophysicists use the term metal to collectively describe all elements other than hydrogen and helium, the simplest two, in a star. The star fuses smaller atoms, mostly hydrogen and helium, to larger ones over its lifetime. In that sense, the metallicity of an object is the proportion of its matter made up of all chemical elements. Many elements and compounds that are not normally classified as metals become metallic under high pressures, the atoms of metallic substances are typically arranged in one of three common crystal structures, namely body-centered cubic, face-centered cubic, and hexagonal close-packed. In bcc, each atom is positioned at the center of a cube of eight others, in fcc and hcp, each atom is surrounded by twelve others, but the stacking of the layers differs. Some metals adopt different structures depending on the temperature, atoms of metals readily lose their outer shell electrons, resulting in a free flowing cloud of electrons within their otherwise solid arrangement. This provides the ability of metallic substances to easily transmit heat, while this flow of electrons occurs, the solid characteristic of the metal is produced by electrostatic interactions between each atom and the electron cloud. This type of bond is called a metallic bond, Metals are usually inclined to form cations through electron loss, reacting with oxygen in the air to form oxides over various timescales. Examples,4 Na + O2 →2 Na2O2 Ca + O2 →2 CaO4 Al +3 O2 →2 Al2O3, the transition metals are slower to oxidize because they form a passivating layer of oxide that protects the interior. Others, like palladium, platinum and gold, do not react with the atmosphere at all, some metals form a barrier layer of oxide on their surface which cannot be penetrated by further oxygen molecules and thus retain their shiny appearance and good conductivity for many decades. The oxides of metals are generally basic, as opposed to those of nonmetals, exceptions are largely oxides with very high oxidation states such as CrO3, Mn2O7, and OsO4, which have strictly acidic reactions. Painting, anodizing or plating metals are good ways to prevent their corrosion, however, a more reactive metal in the electrochemical series must be chosen for coating, especially when chipping of the coating is expected. Water and the two form an electrochemical cell, and if the coating is less reactive than the coatee. Metals in general have high conductivity, high thermal conductivity. Typically they are malleable and ductile, deforming under stress without cleaving, in terms of optical properties, metals are shiny and lustrous. Sheets of metal beyond a few micrometres in thickness appear opaque, although most metals have higher densities than most nonmetals, there is wide variation in their densities, lithium being the least dense solid element and osmium the densest
$26.69 billion (PPP) (2012 est.)
South Africa 30.5%
Italy 9.8%
China 9.4%
Belgium 8%
Spain 6.1%
Egypt 5.1% (2013 est.)[2]
India 13.9%
Portugal 4.5%
Australia 4.3% (2013 est.)[3]
34.6% of GDP (2012 est.),_%25_of_world_average,_1960-2012;_Zimbabwe,_South_Africa,_Botswana,_Zambia,_Mozambique.png)
This article incorporates public domain material from the CIA World Factbook website https://www.cia.gov/library/publications/the-world-factbook/index.html.
