1.
Conveyor system
–
A conveyor system is a common piece of mechanical handling equipment that moves materials from one location to another. Conveyors are especially useful in applications involving the transportation of heavy or bulky materials, Conveyor systems allow quick and efficient transportation for a wide variety of materials, which make them very popular in the material handling and packaging industries. Many kinds of conveying systems are available and are used according to the needs of different industries. There are chain conveyors as well, chain conveyors consist of enclosed tracks, I-Beam, towline, power & free, and hand pushed trolleys. Conveyor systems are used widespread across a range of industries due to the benefits they provide. Conveyors are able to transport materials from one level to another. They can be installed almost anywhere, and are safer than using a forklift or other machine to move materials. They can move loads of all shapes, sizes and weights, also, many have advanced safety features that help prevent accidents. There are a variety of available for running conveying systems, including the hydraulic, mechanical and fully automated systems. Many factors are important in the selection of a conveyor system. It is important to know how the system will be used beforehand. A conveyor system is often the lifeline to an ability to effectively move its product in a timely fashion. Increasing the service life of a conveyor system involves, choosing the right conveyor type, a conveyor system that is designed properly will last a long time with proper maintenance. Here are six of the biggest problems to watch for in overhead type conveyor systems including I-beam monorails, enclosed track conveyors and power, overhead conveyor systems have been used in numerous applications from shop displays, assembly lines to paint finishing plants and more. Poor take-up adjustment, this is an adjustment on most systems yet it is often overlooked. The chain take-up device ensures that the chain is pulled tight as it leaves the drive unit, as wear occurs and the chain lengthens, the take-up extends under the force of its springs. As they extend, the force becomes less and the take-up has less effect. Simply compress the springs and your problem goes away
2.
Material handling
–
Material handling involves short-distance movement within the confines of a building or between a building and a transportation vehicle. Material handling plays an important role in manufacturing and logistics, which represent over 20% of the U. S. economy. Almost every item of commerce was transported on a conveyor or lift truck or other type of material handling equipment in manufacturing plants, warehouses. If two activities are adjacent to other, then material might easily be handed from one activity to another. If activities are in sequence, a conveyor can move the material at low cost, if activities are separated, more expensive industrial trucks or overhead conveyors are required for transport. A unit load is either a unit of an item, or multiple units so arranged or restricted that they can be handled as a single unit. Although granular, liquid, and gaseous materials can be transported in bulk, they can also be contained into unit loads using bags, drums, and cylinders. Advantages of unit loads are more items can be handled at the same time. Disadvantages of unit loads include the impact of batching on production system perf load. Unit loads can be used both for handling and for distribution. Unit load design involves determining the type, size, weight, and configuration of the load, the equipment and method used to handle the load, for in-process handling, unit loads should not be larger than the production batch size of parts in process. Also, the size of a unit load may be limited by the equipment and aisle space available. Manual handling refers to the use of a worker’s hands to move individual containers by lifting, lowering, filling, emptying, ergonomic improvements can be used to modify manual handling tasks to reduce injury. These improvements can include reconfiguring the task and using positioning equipment like lift/tilt/turn tables, hoists, balancers, the NIOSH1991 Revised Lifting Equation can be used to evaluate manual lifting tasks. Under ideal circumstances, the recommended weight for manual lifting to avoid back injuries is 51 lb. Using the exact conditions of the lift, six multipliers are used to reduce the maximum recommended weight for less than ideal lifting tasks, whenever technically and economically feasible, equipment can be used to reduce and sometimes replace the need to manually handle material. Assuming a real interest rate of 1. M,1972, Material Handling System Design, New York, Ronald. 2014, Warehouse & Distribution Science, Release 0.96, frazelle, E.2002, World-Class Warehousing and Material Handling, New York, McGraw-Hill
3.
Grain
–
Grains are small, hard, dry seeds, with or without attached hulls or fruit layers, harvested for human or animal consumption. Agronomists also call the plants producing such seeds grain crops, the two main types of commercial grain crops are cereals such as wheat and rye, and legumes such as beans and soybeans. Because of the ubiquity of grain as a source, the term grain is often used to describe something small. After being harvested, dry grains are more durable than other foods, such as starchy fruits. Thus, major global commodity markets exist for canola, maize, rice, soybeans, wheat, in botany, grains and cereals are synonymous with caryopses, the fruits of the grass family. In agronomy and commerce, seeds or fruits from other plant families are called if they resemble caryopses. For example, amaranth is sold as grain amaranth, and amaranth products may be described as whole grains, the pre-Hispanic civilizations of the Andes had grain-based food systems but, at the higher elevations, none of the grains was a cereal. All three grains native to the Andes are broad-leafed plants rather than such as corn, rice. All cereal crops are members of the grass family, cereal grains contain a substantial amount of starch, a carbohydrate that provides dietary energy. As is the case all other whole plant foods, pulses also contain carbohydrate. Vegetable oils provide dietary energy and some essential fatty acids and they are also used as fuel or lubricants. Those who handle grain at grain facilities may encounter numerous occupational hazards, risks include grain entrapment, where workers are submerged in the grain and unable to remove themselves, explosions caused by fine particles of grain dust, and falls
4.
Salt
–
Salt is present in vast quantities in seawater, where it is the main mineral constituent. The open ocean has about 35 grams of solids per litre, Salt is essential for life in general, and saltiness is one of the basic human tastes. The tissues of animals contain larger quantities of salt than do plant tissues, Salt is one of the oldest and most ubiquitous food seasonings, and salting is an important method of food preservation. Salt was also prized by the ancient Hebrews, the Greeks, the Romans, the Byzantines, the Hittites, Egyptians, and the Indians. Salt became an important article of trade and was transported by boat across the Mediterranean Sea, along specially built salt roads, the scarcity and universal need for salt has led nations to go to war over it and use it to raise tax revenues. Salt is used in ceremonies and has other cultural significance. Salt is processed from salt mines, or by the evaporation of seawater or mineral-rich spring water in shallow pools. Its major industrial products are caustic soda and chlorine, and is used in industrial processes including the manufacture of polyvinyl chloride, plastics, paper pulp. Of the annual production of around two hundred million tonnes of salt, only about 6% is used for human consumption. Other uses include water conditioning processes, de-icing highways, and agricultural use, edible salt is sold in forms such as sea salt and table salt which usually contains an anti-caking agent and may be iodised to prevent iodine deficiency. As well as its use in cooking and at the table, sodium is an essential nutrient for human health via its role as an electrolyte and osmotic solute. Excessive salt consumption can increase the risk of diseases, such as hypertension, in children. Such health effects of salt have long been studied, accordingly, numerous world health associations and experts in developed countries recommend reducing consumption of popular salty foods. The World Health Organization recommends that adults should consume less than 2,000 mg of sodium, humans have always tended to build communities either around sources of salt, or where they can trade for it. All through history the availability of salt has been pivotal to civilization, the word salary comes from the Latin word for salt because the Roman Legions were sometimes paid in salt. The Natron Valley was a key region that supported the Egyptian Empire to its north, because it supplied it with a kind of salt that came to be called by its name, natron. Even before this, what is now thought to have been the first city in Europe is Solnitsata, in Bulgaria, even the name Solnisata means salt works. A very ancient salt-works operation has been discovered at the Poiana Slatinei archaeological site next to a spring in Lunca, Neamț County
5.
Coal
–
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
6.
Sand
–
Sand is a naturally occurring granular material composed of finely divided rock and mineral particles. It is defined by size, being finer than gravel and coarser than silt, Sand can also refer to a textural class of soil or soil type, i. e. a soil containing more than 85% sand-sized particles by mass. The second most common type of sand is calcium carbonate, for example aragonite, for example, it is the primary form of sand apparent in areas where reefs have dominated the ecosystem for millions of years like the Caribbean. Sand is a non renewable resource over human timescales, and sand suitable for making concrete is in high demand, in terms of particle size as used by geologists, sand particles range in diameter from 0.0625 mm to 2 mm. An individual particle in this size is termed a sand grain. Sand grains are between gravel and silt, a 1953 engineering standard published by the American Association of State Highway and Transportation Officials set the minimum sand size at 0.074 mm. A1938 specification of the United States Department of Agriculture was 0.05 mm. Sand feels gritty when rubbed between the fingers. ISO14688 grades sands as fine, medium and coarse with ranges 0.063 mm to 0.2 mm to 0.63 mm to 2.0 mm. In the United States, sand is commonly divided into five sub-categories based on size, very fine sand, fine sand, medium sand, coarse sand, and very coarse sand. These sizes are based on the Krumbein phi scale, where size in Φ = -log2D, on this scale, for sand the value of Φ varies from −1 to +4, with the divisions between sub-categories at whole numbers. The composition of sand is highly variable, depending on the local rock sources. The gypsum sand dunes of the White Sands National Monument in New Mexico are famous for their bright, arkose is a sand or sandstone with considerable feldspar content, derived from weathering and erosion of a granitic rock outcrop. Some sands contain magnetite, chlorite, glauconite or gypsum, Sands rich in magnetite are dark to black in color, as are sands derived from volcanic basalts and obsidian. Chlorite-glauconite bearing sands are typically green in color, as are sands derived from basaltic with a high olivine content, many sands, especially those found extensively in Southern Europe, have iron impurities within the quartz crystals of the sand, giving a deep yellow color. Sand deposits in some areas contain garnets and other resistant minerals, the study of individual grains can reveal much historical information as to the origin and kind of transport of the grain. Quartz sand that is weathered from granite or gneiss quartz crystals will be angular. It is called grus in geology or sharp sand in the trade where it is preferred for concrete. Sand that is transported long distances by water or wind will be rounded, people who collect sand as a hobby are known as arenophiles
7.
Retail
–
Retail markets and shops have a very ancient history, dating back to antiquity. Retailing involves the process of selling goods or services to customers through multiple channels of distribution to earn a profit. Retailers satisfy demand is identified through a supply chain, Once the strategic retail plan is in place, retailers devise the retail mix which includes product, price, place, promotion, personnel and presentation. In the digital age, a number of retailers are seeking to reach broader markets by selling through multiple channels. Digital technologies are changing the way that consumers pay for goods. Retailing support services may include the provision of credit, delivery services. Shopping generally refers to the act of buying products, sometimes this is done to obtain final goods, including necessities such as food and clothing, sometimes it takes place as a recreational activity. Recreational shopping often involves window shopping and browsing, it not always result in a purchase. Retail shops occur in a range of types and in many different contexts - from strip shopping centres in residential streets through to large. Shopping streets may restrict traffic to pedestrians only, forms of non-shop retailing include online retailing and mail order. Retail comes from the Old French word tailler, which means to cut off, clip, pare and it was first recorded as a noun with the meaning of a sale in small quantities in 1433. Like in French, the retail in both Dutch and German also refers to the sale of small quantities of items. Also see History of merchants, History of the market place, open air, public markets were known in ancient Babylonia and Assyria. These markets typically occupied a place in the towns centre, surrounding the market, skilled artisans, such as metal-workers and leather workers, occupied premises in alley ways that led to the open market-place. These artisans may have sold wares directly from their premises, in ancient Greece markets operated within the agora, and in ancient Rome the forum. In antiquity, exchange involved direct selling, merchants or peddlers, the Phoenicians, noted for their seafaring skills, plied their ships across the Mediterranean, becoming a major trading power by 9th century BCE. The Phoenicians imported and exported wood, textiles, glass and produce such as wine, oil, dried fruit, the Phoenicians extensive trade networks necessitated considerable book-keeping and correspondence. In around 1500 BCE, the Phoenicians developed an alphabet which was much easier to learn that the complex scripts used in ancient Egypt
8.
Manufacturing
–
Manufacturing is the value added to production of merchandise for use or sale using labour and machines, tools, chemical and biological processing, or formulation. Manufacturing engineering or manufacturing process are the steps through which raw materials are transformed into a final product, the manufacturing process begins with the product design, and materials specification from which the product is made. These materials are modified through manufacturing processes to become the required part. Manufacturing takes turns under all types of economic systems, in a free market economy, manufacturing is usually directed toward the mass production of products for sale to consumers at a profit. In a collectivist economy, manufacturing is more directed by the state to supply a centrally planned economy. In mixed market economies, manufacturing occurs under some degree of government regulation, modern manufacturing includes all intermediate processes required the production and integration of a products components. Some industries, such as semiconductor and steel manufacturers use the term fabrication instead, the manufacturing sector is closely connected with engineering and industrial design. Examples of major manufacturers in North America include General Motors Corporation, General Electric, Procter & Gamble, General Dynamics, Boeing, Pfizer, examples in Europe include Volkswagen Group, Siemens, and Michelin. Examples in Asia include Sony, Huawei, Lenovo, Toyota, Samsung, in its earliest form, manufacturing was usually carried out by a single skilled artisan with assistants. In much of the world, the guild system protected the privileges. Before the Industrial Revolution, most manufacturing occurred in rural areas, entrepreneurs organized a number of manufacturing households into a single enterprise through the putting-out system. Toll manufacturing is an arrangement whereby a first firm with specialized equipment processes raw materials or semi-finished goods for a second firm, manufacturing provides important material support for national infrastructure and for national defense. On the other hand, most manufacturing may involve significant social and environmental costs, the clean-up costs of hazardous waste, for example, may outweigh the benefits of a product that creates it. Hazardous materials may expose workers to health risks and these costs are now well known and there is effort to address them by improving efficiency, reducing waste, using industrial symbiosis, and eliminating harmful chemicals. The negative costs of manufacturing can also be addressed legally, developed countries regulate manufacturing activity with labor laws and environmental laws. Across the globe, manufacturers can be subject to regulations and pollution taxes to offset the costs of manufacturing activities. Labor unions and craft guilds have played a role in the negotiation of worker rights. Environment laws and labor protections that are available in developed nations may not be available in the third world, tort law and product liability impose additional costs on manufacturing
9.
Ship
–
Historically, a ship was a sailing vessel with at least three square-rigged masts and a full bowsprit. Ships are generally distinguished from boats, based on size, shape, Ships have been important contributors to human migration and commerce. They have supported the spread of colonization and the trade, but have also served scientific, cultural. After the 16th century, new crops that had come from, Ship transport is responsible for the largest portion of world commerce. As of 2016, there were more than 49,000 merchant ships, of these 28% were oil tankers, 43% were bulk carriers, and 13% were container ships. Military forces operate vessels for naval warfare and to transport and support forces ashore, the top 50 navies had a median fleet of 88 surface vessels each, according to various sources. There is no definition of what distinguishes a ship from a boat. Ships can usually be distinguished from boats based on size and the ability to operate independently for extended periods. A legal definition of ship from Indian case law is a vessel that carries goods by sea, a common notion is that a ship can carry a boat, but not vice versa. American and British 19th Century maritime law distinguished vessels from other craft, ships and boats fall in one legal category, a number of large vessels are usually referred to as boats. Other types of vessel which are traditionally called boats are Great Lakes freighters, riverboats. Though large enough to carry their own boats and heavy cargoes, in most maritime traditions ships have individual names, and modern ships may belong to a ship class often named after its first ship. The first known vessels date back about 10,000 years ago, the first navigators began to use animal skins or woven fabrics as sails. Affixed to the top of a pole set upright in a boat and this allowed men to explore widely, allowing for the settlement of Oceania for example. By around 3000 BC, Ancient Egyptians knew how to assemble wooden planks into a hull and they used woven straps to lash the planks together, and reeds or grass stuffed between the planks helped to seal the seams. Sneferus ancient cedar wood ship Praise of the Two Lands is the first reference recorded to a ship being referred to by name, the ancient Egyptians were perfectly at ease building sailboats. A remarkable example of their skills was the Khufu ship. Aksum was known by the Greeks for having seaports for ships from Greece, a panel found at Mohenjodaro depicted a sailing craft
10.
Conveyor belt sushi
–
Conveyor belt sushi, literally rotation sushi, also called sushi-go-round, is a form of sushi restaurant common in Japan. In Australia, it is known as a sushi train. Kaiten-zushi is a restaurant where the plates with the sushi are placed on a rotating conveyor belt or moat that winds through the restaurant and moves past every table. Customers may place special orders, but most simply pick their selections from a stream of fresh sushi moving along the conveyor belt. The final bill is based on the number and type of plates of the consumed sushi, some restaurants use a fancier presentation such as miniature wooden sushi boats traveling small canals or miniature locomotive cars. The most remarkable feature of conveyor belt sushi is the stream of plates winding through the restaurant, the selection is usually not limited to sushi, it may also include drinks, fruits, desserts, soups, and other foods. Some restaurants have RFID tags or other systems in place to remove sushi that has rotated for too long, if customers cannot find their desired sushi, they can make special orders. Sometimes speaker phones are available for this purpose above the conveyor belt, if a small quantity of sushi is ordered, it is placed on the conveyor belt but marked so other customers know that this dish was ordered by someone. Usually, the plate with the sushi sits on a labeled cylindrical stand to indicate that this is a special order, for large orders the sushi may also be brought to the customer by the attendants. Some restaurants in Japan also have touch screen displays for ordering specific dishes which might be delivered on a conveyor belt or by waiters. Condiments and tools are found near the seats, for example pickled ginger, chopsticks, soy sauce. Wasabi may be either at the seat or on the conveyor belt, self-served tea and ice water is usually complementary, with cups stacked on a shelf above the conveyor belt and teabags or green tea powder in a storage container on the table. There is also a hot water faucet at the tables to make tea, on the shelves are usually wet paper towels and plastic boxes to store sushi for take-out customers. The bill is calculated by counting the number and type of plates of the consumed sushi, plates with different colors, patterns, or shapes have different prices, usually ranging from 100 yen to 500 yen. The cost of each plate is shown on signboards or posters in the restaurant, in general, cheap items come on plain plates, and the level of plate decoration is related to the price. The most expensive items tend to come on gold colored plates, expensive items may be placed on two plates, with the price being the sum of the prices of the individual plates. Some conveyor belt sushi restaurant chains, such as Kappa Sushi or Otaru Zushi, have a price of 100 yen for every plate. This is similar to the phenomenon of 100-yen shops, a button above the conveyor belt can be used to call the attendants to count the plates
11.
Electric motor
–
An electric motor is an electrical machine that converts electrical energy into mechanical energy. The reverse of this is the conversion of energy into electrical energy and is done by an electric generator. In normal motoring mode, most electric motors operate through the interaction between an electric motors magnetic field and winding currents to generate force within the motor, small motors may be found in electric watches. General-purpose motors with highly standardized dimensions and characteristics provide convenient mechanical power for industrial use, the largest of electric motors are used for ship propulsion, pipeline compression and pumped-storage applications with ratings reaching 100 megawatts. Electric motors may be classified by electric power source type, internal construction, application, type of motion output, perhaps the first electric motors were simple electrostatic devices created by the Scottish monk Andrew Gordon in the 1740s. The theoretical principle behind production of force by the interactions of an electric current. The conversion of energy into mechanical energy by electromagnetic means was demonstrated by the British scientist Michael Faraday in 1821. A free-hanging wire was dipped into a pool of mercury, on which a permanent magnet was placed, when a current was passed through the wire, the wire rotated around the magnet, showing that the current gave rise to a close circular magnetic field around the wire. This motor is often demonstrated in experiments, brine substituting for toxic mercury. Though Barlows wheel was a refinement to this Faraday demonstration. In 1827, Hungarian physicist Ányos Jedlik started experimenting with electromagnetic coils, after Jedlik solved the technical problems of the continuous rotation with the invention of the commutator, he called his early devices electromagnetic self-rotors. Although they were used only for instructional purposes, in 1828 Jedlik demonstrated the first device to contain the three components of practical DC motors, the stator, rotor and commutator. The device employed no permanent magnets, as the fields of both the stationary and revolving components were produced solely by the currents flowing through their windings. His motor set a record which was improved only four years later in September 1838 by Jacobi himself. His second motor was powerful enough to drive a boat with 14 people across a wide river and it was not until 1839/40 that other developers worldwide managed to build motors of similar and later also of higher performance. The first commutator DC electric motor capable of turning machinery was invented by the British scientist William Sturgeon in 1832, following Sturgeons work, a commutator-type direct-current electric motor made with the intention of commercial use was built by the American inventor Thomas Davenport, which he patented in 1837. The motors ran at up to 600 revolutions per minute, and powered machine tools, due to the high cost of primary battery power, the motors were commercially unsuccessful and Davenport went bankrupt. Several inventors followed Sturgeon in the development of DC motors but all encountered the same battery power cost issues, no electricity distribution had been developed at the time
_-_BEIC_6328731.jpg)
Rines, George Edwin, ed. (1920). "Robins, Thomas". Encyclopedia Americana.
Rines, George Edwin, ed. (1920). "
