1.
Jan Verkolje
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Johannes, or Jan Verkolje was a Dutch Golden Age painter and engraver, often called Jan I to distinguish him from his son Jan II. He is known for his portraits and genre pieces, Verkolje was baptized in the Nieuwezijds Kapel as the son of Benjamin Jacobsz, a locksmith, and Maria Tonnes. The couple lived not far away in Regulierbreestraat, near the Munttoren, within the same year his brother Jacob was baptised. Jan became a student of Jan Andrea Lievens, the son of Jan Lievens, according to Arnold Houbraken, he was a wunderkind, whose talent started with an accident. As a child playing with darts, he had the accident of receiving a dart in his heel. While in bed a man named Bronkhorst gave him some prints to copy, and thus he took up drawing, with the same amount of dedication, the young Jan Verkolje learned the art of perspective within a month. Then he took up painting in oils, and copied the works of Gerard van Zyl, also known as Gerards. Lievens then offered him a present, namely to witness the sale of paintings, whereby the buyers claimed they were too good to be by Lievens. They were then sold as Gerards paintings and this experience only fueled the artistic fervor of Verkolje further. Houbraken also claimed that Verkolje discovered the mezzotint technique on his own, in the rampjaar 1672 he moved from Amsterdam via Schipluiden to Delft, where he married in October 1672 with Judick Voorheul. He became a member of the Guild of St. Luke in 1673 serving as its dean between 1678 and 1688, Verkolje became very successful and would sell to the court in the Hague. His sons Nikolaas Verkolje and Jan II also became painters and his other pupils were Albertus van der Burch, Joan van der Spriet, Willem Verschuring, and Thomas van der Wilt. In addition to this list of names, Houbraken also mentions Henrik Steenwinkel, Verkolje died in Delft in 1693 aged 43 at the peak of his fame, and was buried in the Oude Kerk. He left a wife, three sons and two daughters, Houbraken intended to write a biographical sketch of Nicolaas, but never got that far, he died in 1719 before publication of Volume III, which contains Jan Verkoljes biographical sketch. A Music Party, from the Permanent Collection of the Utah Museum of Fine Arts, media related to Jan Verkolje at Wikimedia Commons Vermeer and The Delft School, a full text exhibition catalog from The Metropolitan Museum of Art, which contains material on Jan Verkolje
2.
Delft
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Delft is a city and a municipality in the Netherlands. It is located in the province of South Holland, to the north of Rotterdam, the city of Delft came into being aside a canal, the Delf, which comes from the word delven, meaning delving or digging, and led to the name Delft. It presumably started around the 11th century as a landlord court, from a rural village in the early Middle Ages, Delft developed to a city, that in the 13th century received its charter. The towns association with the House of Orange started when William of Orange, nicknamed William the Silent, at the time he was the leader of growing national Dutch resistance against Spanish occupation, known as the Eighty Years War. By then Delft was one of the cities of Holland. An attack by Spanish forces in October of that year was repelled, after the Act of Abjuration was proclaimed in 1581, Delft became the de facto capital of the newly independent Netherlands, as the seat of the Prince of Orange. When William was shot dead in 1584, by Balthazar Gerards in the hall of the Prinsenhof, therefore, he was buried in the Delft Nieuwe Kerk, starting a tradition for the House of Orange that has continued to the present day. The Delft Explosion, also known in history as the Delft Thunderclap, occurred on 12 October 1654 when a gunpowder store exploded, over a hundred people were killed and thousands were wounded. About 30 tonnes of gunpowder were stored in barrels in a magazine in a former Clarissen convent in the Doelenkwartier district, cornelis Soetens, the keeper of the magazine, opened the store to check a sample of the powder and a huge explosion followed. Luckily, many citizens were away, visiting a market in Schiedam or a fair in The Hague, Delft artist Egbert van der Poel painted several pictures of Delft showing the devastation. Historical buildings and other sights of interest include, Oude Kerk, buried here, Piet Hein, Johannes Vermeer, Anthony van Leeuwenhoek. Nieuwe Kerk, constructed between 1381 and 1496 and it contains the Dutch royal familys burial vault, which between funerals is sealed with a 5,000 kg cover stone. A statue of Hugo Grotius made by Franciscus Leonardus Stracké in 1886 and this is the only remaining gate of the old city walls. The Gemeenlandshuis Delfland, or Huyterhuis, built in 1505, which has housed the Delfland regional water authority since 1645, the Vermeer Centre in the rebuilt Guild house of St. Luke. Windmill De Roos, a mill built c.1760. Restored to working order in 2013, another windmill that formerly stood in Delft, Het Fortuyn, was dismantled in 1917 and re-erected at the Netherlands Open Air Museum, Arnhem, Gelderland in 1920. Delft is well known for the Delft pottery ceramic products which were styled on the imported Chinese porcelain of the 17th century, the city had an early start in this area since it was a home port of the Dutch East India Company. It can still be seen at the pottery factories De Koninklijke Porceleyne Fles, the painter Johannes Vermeer was born in Delft
3.
Dutch Republic
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It preceded the Batavian Republic, the Kingdom of Holland, the United Kingdom of the Netherlands, and ultimately the modern Kingdom of the Netherlands. Alternative names include the United Provinces, Seven Provinces, Federated Dutch Provinces, most of the Low Countries had come under the rule of the House of Burgundy and subsequently the House of Habsburg. In 1549 Holy Roman Emperor Charles V issued the Pragmatic Sanction, Charles was succeeded by his son, King Philip II of Spain. This was the start of the Eighty Years War, in 1579 a number of the northern provinces of the Low Countries signed the Union of Utrecht, in which they promised to support each other in their defence against the Spanish army. This was followed in 1581 by the Act of Abjuration, the declaration of independence of the provinces from Philip II. In 1582 the United Provinces invited Francis, Duke of Anjou to lead them, but after an attempt to take Antwerp in 1583. After the assassination of William of Orange, both Henry III of France and Elizabeth I of England declined the offer of sovereignty, however, the latter agreed to turn the United Provinces into a protectorate of England, and sent the Earl of Leicester as governor-general. This was unsuccessful and in 1588 the provinces became a confederacy, the Union of Utrecht is regarded as the foundation of the Republic of the Seven United Provinces, which was not recognized by the Spanish Empire until the Peace of Westphalia in 1648. During the Anglo-French war, the territory was divided into groups, the Patriots, who were pro-French and pro-American and the Orangists. The Republic of the United Provinces faced a series of revolutions in 1783–1787. During this period, republican forces occupied several major Dutch cities, initially on the defence, the Orangist forces received aid from Prussian troops and retook the Netherlands in 1787. After the French Republic became the French Empire under Napoleon, the Batavian Republic was replaced by the Napoleonic Kingdom of Holland, the Netherlands regained independence from France in 1813. In the Anglo-Dutch Treaty of 1814 the names United Provinces of the Netherlands, on 16 March 1815, the son of stadtholder William V crowned himself King William I of the Netherlands. Between 1815 and 1890 the King of the Netherlands was also in a union the Grand Duke of the sovereign Grand Duchy of Luxembourg. After Belgium gained its independence in 1830, the state became known as the Kingdom of the Netherlands. The County of Holland was the wealthiest and most urbanized region in the world, the free trade spirit of the time received a strong augmentation through the development of a modern, effective stock market in the Low Countries. The Netherlands has the oldest stock exchange in the world, founded in 1602 by the Dutch East India Company, while Rotterdam has the oldest bourse in the Netherlands, the worlds first stock exchange, that of the Dutch East-India Company, went public in six different cities. Later, a court ruled that the company had to reside legally in a city so Amsterdam is recognized as the oldest such institution based on modern trading principles
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Microbiology
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Microbiology is the study of microscopic organisms, those being unicellular, multicellular, or acellular. Microbiology encompasses numerous sub-disciplines including virology, mycology, parasitology, microbiologists traditionally relied on culture, staining, and microscopy. However, less than 1% of the present in common environments can be cultured in isolation using current means. Microbiologists often rely on extraction or detection of nucleic acid, either DNA or RNA sequences, viruses have been variably classified as organisms, as they have been considered either as very simple microorganisms or very complex molecules. As an application of microbiology, medical microbiology is often introduced with medical principles of immunology as microbiology and immunology, otherwise, microbiology, virology, and immunology as basic sciences have greatly exceeded the medical variants, applied sciences. The existence of microorganisms was hypothesized for many centuries before their actual discovery, the existence of unseen microbiological life was postulated by Jainism which is based on Mahavira’s teachings as early as 6th century BCE. Paul Dundas notes that Mahavira asserted existence of unseen microbiological creatures living in earth, water, air, in 1546, Girolamo Fracastoro proposed that epidemic diseases were caused by transferable seedlike entities that could transmit infection by direct or indirect contact, or vehicle transmission. However, early claims about the existence of microorganisms were speculative, actual observation and discovery of microbes had to await the invention of the microscope in the 17th century. In 1676, Anton van Leeuwenhoek, who lived most of his life in Delft, Holland, observed bacteria and other microorganisms using a single-lens microscope of his own design. While Van Leeuwenhoek is often cited as the first to observe microbes, Robert Hooke made the first recorded microscopic observation, of the bodies of moulds. It has, however, been suggested that a Jesuit priest called Athanasius Kircher was the first to observe micro-organisms and he was among the first to design magic lanterns for projection purposes, so he must have been well acquainted with the properties of lenses. One of his books contains a chapter in Latin, which reads in translation – Concerning the wonderful structure of things in nature, here, he wrote who would believe that vinegar and milk abound with an innumerable multitude of worms. He also noted that material is full of innumerable creeping animalcule. These observations antedate Robert Hookes Micrographia by nearly 20 years and were published some 29 years before van Leeuwenhoek saw protozoa and 37 years before he described having seen bacteria. Joseph Lister was the first person who said infectious diseases are caused by micro-organism and was first person who used phenol as disinfectant on the wounds of patients. Cohn was also the first to formulate a scheme for the classification of bacteria. Louis Pasteur and Robert Koch were contemporaries of Cohn’s and are considered to be the father of microbiology and medical microbiology. Pasteur is most famous for his series of experiments designed to disprove the widely held theory of spontaneous generation
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Microorganism
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A microorganism or microbe is a microscopic organism, which may be single-celled or multicellular. The study of microorganisms is called microbiology, a subject that began with the discovery of microorganisms in 1674 by Antonie van Leeuwenhoek, microorganisms are very diverse and include all bacteria, archaea and most protozoa. This group also contains some fungi, algae, and some such as rotifers. Many macroscopic animals and plants have microscopic juvenile stages, some microbiologists classify viruses and viroids as microorganisms, but others consider these as nonliving. In July 2016, scientists identified a set of 355 genes from the last universal ancestor of all life, including microorganisms. Microorganisms, under certain test conditions, have observed to thrive in the vacuum of outer space. Microorganisms likely far outweigh all other living things combined, the mass of prokaryote microorganisms including the bacteria and archaea may be as much as 0.8 trillion tons of carbon, out of the total biomass of between 1 and 4 trillion tons. Microorganisms appear to thrive in the Mariana Trench, the deepest spot in the Earths oceans, in August 2014, scientists confirmed the existence of microorganisms living 800 m below the ice of Antarctica. According to one researcher, You can find microbes everywhere — theyre extremely adaptable to conditions, microorganisms are crucial to nutrient recycling in ecosystems as they act as decomposers. As some microorganisms can fix nitrogen, they are a part of the nitrogen cycle. Microorganisms are also exploited in biotechnology, both in food and beverage preparation, and in modern technologies based on genetic engineering. A small proportion of microorganisms are pathogenic, causing disease and even death in plants, Robert Hooke coined the term cell after viewing plant cells under his microscope. Antonie Van Leeuwenhoek was one of the first people to observe microorganisms in 1673, later, in the 19th century, Louis Pasteur found that microorganisms caused food spoilage, debunking the theory of spontaneous generation. In 1876 Robert Koch discovered that microorganisms cause diseases, single-celled microorganisms were the first forms of life to develop on Earth, approximately 3–4 billion years ago. Further evolution was slow, and for about 3 billion years in the Precambrian eon, so, for most of the history of life on Earth, the only forms of life were microorganisms. Bacteria, algae and fungi have been identified in amber that is 220 million years old, microorganisms tend to have a relatively fast rate of evolution. Most microorganisms can reproduce rapidly, and bacteria are able to freely exchange genes through conjugation, transformation and transduction. This rapid evolution is important in medicine, as it has led to the development of multidrug resistant pathogenic bacteria, superbugs, the possible existence of microorganisms was discussed for many centuries before their discovery in the 17th century
6.
Microscopy
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Microscopy is the technical field of using microscopes to view objects and areas of objects that cannot be seen with the naked eye. There are three branches of microscopy, optical, electron, and scanning probe microscopy. This process may be carried out by irradiation of the sample or by scanning of a fine beam over the sample. Scanning probe microscopy involves the interaction of a probe with the surface of the object of interest. The development of microscopy revolutionized biology, gave rise to the field of histology and so remains an essential technique in the life and physical sciences. Optical or light microscopy involves passing visible light transmitted through or reflected from the sample through a single or multiple lenses to allow a view of the sample. The resulting image can be detected directly by the eye, imaged on a plate or captured digitally. The single lens with its attachments, or the system of lenses and imaging equipment, along with the lighting equipment, sample stage and support. The most recent development is the microscope, which uses a CCD camera to focus on the exhibit of interest. The image is shown on a screen, so eye-pieces are unnecessary. Limitations of standard optical microscopy lie in three areas, This technique can only image dark or strongly refracting objects effectively, diffraction limits resolution to approximately 0.2 micrometres. This limits the practical limit to ~1500x. Out of focus light from points outside the focal plane reduces image clarity, live cells in particular generally lack sufficient contrast to be studied successfully, since the internal structures of the cell are colourless and transparent. The most common way to increase contrast is to stain the different structures with selective dyes, staining may also introduce artifacts, apparent structural details that are caused by the processing of the specimen and are thus not legitimate features of the specimen. In general, these make use of differences in the refractive index of cell structures. It is comparable to looking through a window, you dont see the glass. There is a difference, as glass is a material. The human eye is not sensitive to this difference in phase, in order to improve specimen contrast or highlight certain structures in a sample special techniques must be used
7.
Robert Hooke
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Robert Hooke FRS was an English natural philosopher, architect and polymath. Allan Chapman has characterised him as Englands Leonardo, Robert Gunthers Early Science in Oxford, a history of science in Oxford during the Protectorate, Restoration and Age of Enlightenment, devotes five of its fourteen volumes to Hooke. Hooke studied at Wadham College, Oxford during the Protectorate where he became one of a tightly knit group of ardent Royalists led by John Wilkins. Here he was employed as an assistant to Thomas Willis and to Robert Boyle and he built some of the earliest Gregorian telescopes and observed the rotations of Mars and Jupiter. In 1665 he inspired the use of microscopes for scientific exploration with his book, based on his microscopic observations of fossils, Hooke was an early proponent of biological evolution. Much of Hookes scientific work was conducted in his capacity as curator of experiments of the Royal Society, much of what is known of Hookes early life comes from an autobiography that he commenced in 1696 but never completed. Richard Waller mentions it in his introduction to The Posthumous Works of Robert Hooke, the work of Waller, along with John Wards Lives of the Gresham Professors and John Aubreys Brief Lives, form the major near-contemporaneous biographical accounts of Hooke. Robert Hooke was born in 1635 in Freshwater on the Isle of Wight to John Hooke, Robert was the last of four children, two boys and two girls, and there was an age difference of seven years between him and the next youngest. Their father John was a Church of England priest, the curate of Freshwaters Church of All Saints, Robert Hooke was expected to succeed in his education and join the Church. John Hooke also was in charge of a school, and so was able to teach Robert. He was a Royalist and almost certainly a member of a group who went to pay their respects to Charles I when he escaped to the Isle of Wight, Robert, too, grew up to be a staunch monarchist. As a youth, Robert Hooke was fascinated by observation, mechanical works and he dismantled a brass clock and built a wooden replica that, by all accounts, worked well enough, and he learned to draw, making his own materials from coal, chalk and ruddle. Hooke quickly mastered Latin and Greek, made study of Hebrew. Here, too, he embarked on his study of mechanics. It appears that Hooke was one of a group of students whom Busby educated in parallel to the work of the school. Contemporary accounts say he was not much seen in the school, in 1653, Hooke secured a choristers place at Christ Church, Oxford. He was employed as an assistant to Dr Thomas Willis. There he met the natural philosopher Robert Boyle, and gained employment as his assistant from about 1655 to 1662, constructing, operating and he did not take his Master of Arts until 1662 or 1663
8.
Regnier de Graaf
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Regnier de Graaf, original Dutch spelling Reinier de Graaf, or Latinized Reijnerus de Graeff was a Dutch physician and anatomist who made key discoveries in reproductive biology. His first name is often spelled Reinier or Reynier, De Graaf was born in Schoonhoven and perhaps a relative to the De Graeff regent family. He studied medicine in Utrecht and Leiden, there his co-students were Jan Swammerdam, Niels Stensen and Frederik Ruysch, one of their professors was Franciscus Sylvius. He submitted his thesis on the pancreas, and went to France where he obtained his medical degree from the University of Angers. While in Paris, he turned to the study of the male genitalia. Back in the Netherlands in 1667, De Graaf established himself in Delft, since he was a Catholic in a mainly Protestant country, he was unable to follow a university career. After the early death of a son, De Graaf died in 1673 at age 32 and was buried in the Oude Kerk in Delft, the reason for his death is unknown. He was, however, affected by his controversy with Swammerdam and it has been speculated that he may have committed suicide. His friend Antonie van Leeuwenhoek in his writings attributed his death to choleric substances, De Graaf also invented a practical syringe, described in his third treatise. His eponymous legacy are the Graafian follicles and he himself pointed out that he was not the first to describe them, but described their development. From the observation of pregnancy in rabbits, he concluded that the contained the oocyte. The mature stage of the follicle is called the Graafian follicle in his honour, although others. The discovery of the egg was eventually made by Karl Ernst von Baer in 1827. De Graaf issued a rebuttal but was affected by the accusation, further, De Graaf described the anatomy of the testicles and collected secretions of the gall bladder and the pancreas. Despite his contributions, De Graaf made a number of errors in addition to believing that the ovum was the follicle and he never actually consulted the ancient texts but merely repeated the accounts of others compounding their inaccuracies. Because he observed rabbits rather than humans, he assumed fertilisation took place in the ovary and he believed that the seminal vesicles stored spermatozoa. He was not yet aware of the presence of spematozaoa as such, De Graaf, R De Virorum Organis Generationi Inservientibus, de Clysteribus et de Usu Siphonis in Anatomia De Graaf, R. De Mulierum Organis Generationi Inservientibus. De Graaf, R Alle de Wercken, Reinier De Graaf and his contribution to reproductive biology
9.
History of biology
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The history of biology traces the study of the living world from ancient to modern times. This ancient work was developed in the Middle Ages by Muslim physicians. During the European Renaissance and early period, biological thought was revolutionized in Europe by a renewed interest in empiricism. Microscopy revealed the unknown world of microorganisms, laying the groundwork for cell theory. The growing importance of natural theology, partly a response to the rise of mechanical philosophy, over the 18th and 19th centuries, biological sciences such as botany and zoology became increasingly professional scientific disciplines. Lavoisier and other scientists began to connect the animate and inanimate worlds through physics. Naturalists began to reject essentialism and consider the importance of extinction, cell theory provided a new perspective on the fundamental basis of life. These developments, as well as the results from embryology and paleontology, were synthesized in Charles Darwins theory of evolution by natural selection. The end of the 19th century saw the fall of spontaneous generation, New disciplines developed rapidly, especially after Watson and Crick proposed the structure of DNA. The word biology is formed by combining the Greek βίος, meaning life, the term biology in its modern sense appears to have been introduced independently by Thomas Beddoes, Karl Friedrich Burdach, Gottfried Reinhold Treviranus and Jean-Baptiste Lamarck. Before biology, there were terms used for the study of animals. Physiology and pharmacology were the province of medicine, botany, zoology, and geology replaced natural history and natural philosophy in the 18th and 19th centuries before biology was widely adopted. To this day, botany and zoology are widely used, although they have been joined by other sub-disciplines of biology, such as mycology, the earliest humans must have had and passed on knowledge about plants and animals to increase their chances of survival. This may have included knowledge of human and animal anatomy and aspects of animal behavior, however, the first major turning point in biological knowledge came with the Neolithic Revolution about 10,000 years ago. Humans first domesticated plants for farming, then livestock animals to accompany the resulting sedentary societies, however, the roots of modern biology are usually traced back to the secular tradition of ancient Greek philosophy. In ancient China, biological topics can be dispersed across several different disciplines, including the work of herbologists, physicians, alchemists. The Taoist tradition of Chinese alchemy, for example, can be considered part of the life sciences due to its emphasis on health, the system of classical Chinese medicine usually revolved around the theory of yin and yang, and the five phases. One of the oldest organised systems of medicine is known from the Indian subcontinent in the form of Ayurveda which originated around 1500 BCE from Atharvaveda, Ayurvedic writers also classified living things into four categories based on the method of birth and explained the conception of a fetus in detail
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Life sciences
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While biology remains the centerpiece of the life sciences, technological advances in molecular biology and biotechnology have led to a burgeoning of specializations and interdisciplinary fields. Some life sciences focus on a type of life. For example, zoology is the study of animals, while botany is the study of plants, other life sciences focus on aspects common to all or many life forms, such as anatomy and genetics. Yet other fields are interested in technological advances involving living things, another major, though more specific, branch of life sciences involves understanding the mind – neuroscience. The life sciences are helpful in improving the quality and standard of life and they have applications in health, agriculture, medicine, and the pharmaceutical and food science industries. There is considerable overlap between many of the topics of study in the life sciences, biology – burst and eclectic field, composed of many branches and subdisciplines. However, despite the broad scope of biology, there are general and unifying concepts within it that govern all study and research, consolidating it into a single. In general, biology recognizes the cell as the unit of life, genes as the basic unit of heredity. It is also understood today that all organisms survive by consuming and transforming energy and by regulating their internal environment to maintain a stable, hematology – study of blood and blood-forming organs. Toxicology - study of the effects of chemicals on living organisms Zoology – study of animals, including classification, physiology, development, medicine – applied science or practice of the diagnosis, treatment, and prevention of disease. It encompasses a variety of care practices evolved to maintain and restore health by the prevention. Some of its branches are, Anesthesiology – branch of medicine that deals with life support, cardiology – branch of medicine that deals with disorders of the heart and the blood vessels. Critical care medicine – focuses on support and the intensive care of the seriously ill. Dermatology – branch of medicine that deals with the skin, its structure, functions, emergency medicine – focuses on care provided in the emergency department. Endocrinology – branch of medicine that deals with disorders of the endocrine system, gastroenterology – branch of medicine that deals with the study and care of the digestive system. General Practice is a branch of medicine that specializes in primary care, geriatrics – branch of medicine that deals with the general health and well-being of the elderly. Gynecology – branch of medicine that deals with the health of the reproductive systems. Hematology – branch of medicine that deals with the blood and the circulatory system, hepatology – branch of medicine that deals with the liver, gallbladder and the biliary system
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Natural history
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Natural history is the research and study of organisms including animals, fungi and plants in their environment, leaning more towards observational than experimental methods of study. It encompasses scientific research but is not limited to it, with articles nowadays more often published in magazines than in academic journals. Grouped among the sciences, natural history is the systematic study of any category of natural objects or organisms. That is a broad designation in a world filled with many narrowly focused disciplines. For example, geobiology has a strong multi-disciplinary nature combining scientists, a person who studies natural history is known as a naturalist or natural historian. The English term natural history is a translation of the Latin historia naturalis and its meaning has narrowed progressively with time, while the meaning of the related term nature has widened. In antiquity, it covered essentially anything connected with nature or which used materials drawn from nature. For example, Pliny the Elders encyclopedia of this title, published circa 77 to 79 AD, covers astronomy, geography, man and his technology, medicine and superstition as well as animals and plants. Medieval European academics considered knowledge to have two divisions, the humanities and divinity, with science studied largely through texts rather than observation or experiment. In modern terms, natural philosophy roughly corresponded to modern physics and chemistry, natural history had been encouraged by practical motives, such as Linnaeus aspiration to improve the economic condition of Sweden. Similarly, the Industrial Revolution prompted the development of geology to help find useful mineral deposits, the astronomer, William Herschel was also a natural historian. Instead of working with plants or minerals he worked with the stars and he spent his time building telescopes to see the stars and the rest of the time watching the stars. In the beginning, he believed there to be a known as a nebulae. Herschel can be considered a natural historian because he observed the natural world, in the process he made charts of all the stars and kept records of all that he saw. S. Wilcove and T. Eisner, The close observation of organisms—their origins, their evolution, their behavior and it encompasses changes in internal states insofar as they pertain to what organisms do. Some definitions go further, focusing on observation of organisms in their environment. Bartholomew, A student of history, or a naturalist, studies the world by observing plants. A common thread in many definitions of natural history is the inclusion of a component, as seen in a recent definition by H. W. Greene
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Scientific revolution
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While its dates are debated, the publication in 1543 of Nicolaus Copernicuss De revolutionibus orbium coelestium is often cited as marking the beginning of the scientific revolution. By the end of the 18th century, the revolution had given way to the Age of Reflection. Great advances in science have been termed revolutions since the 18th century, in 1747, Clairaut wrote that Newton was said in his own lifetime to have created a revolution. The word was used in the preface to Lavoisiers 1789 work announcing the discovery of oxygen. Few revolutions in science have immediately excited so much general notice as the introduction of the theory of oxygen, lavoisier saw his theory accepted by all the most eminent men of his time, and established over a great part of Europe within a few years from its first promulgation. In the 19th century, William Whewell described the revolution in science itself -- the scientific method -- that had taken place in the 15th–16th century. This gave rise to the view of the scientific revolution today, A new view of nature emerged. Science became a discipline, distinct from both philosophy and technology and came to be regarded as having utilitarian goals. The scientific revolution is traditionally assumed to start with the Copernican Revolution, in the 20th century, Alexandre Koyré introduced the term scientific revolution, centering his analysis on Galileo. The term was popularized by Butterfield in his Origins of Modern Science, the scientific revolution led to the establishment of several modern sciences. In 1984, Joseph Ben-David wrote, Rapid accumulation of knowledge, the new kind of scientific activity emerged only in a few countries of Western Europe, and it was restricted to that small area for about two hundred years. Many contemporary writers and modern historians claim that there was a change in world view. Looms so large as the origin both of the modern world and of the modern mentality that our customary periodization of European history has become an anachronism. Some scholars have noted a direct tie between particular aspects of traditional Christianity and the rise of science, the Aristotelian tradition was still an important intellectual framework in the 17th century, although by that time natural philosophers had moved away from much of it. Key scientific ideas dating back to classical antiquity had changed drastically over the years, the ideas that remained, which were transformed fundamentally during the scientific revolution, include, Aristotles cosmology that placed the Earth at the center of a spherical hierarchic cosmos. The terrestrial and celestial regions were made up of different elements which had different kinds of natural movement, the terrestrial region, according to Aristotle, consisted of concentric spheres of the four elements—earth, water, air, and fire. All bodies naturally moved in straight lines until they reached the sphere appropriate to their elemental composition—their natural place, all other terrestrial motions were non-natural, or violent. The celestial region was made up of the element, aether
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Age of Enlightenment
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The Enlightenment was an intellectual movement which dominated the world of ideas in Europe during the 18th century, The Century of Philosophy. In France, the doctrines of les Lumières were individual liberty and religious tolerance in opposition to an absolute monarchy. French historians traditionally place the Enlightenment between 1715, the year that Louis XIV died, and 1789, the beginning of the French Revolution, some recent historians begin the period in the 1620s, with the start of the scientific revolution. Les philosophes of the widely circulated their ideas through meetings at scientific academies, Masonic lodges, literary salons, coffee houses. The ideas of the Enlightenment undermined the authority of the monarchy and the Church, a variety of 19th-century movements, including liberalism and neo-classicism, trace their intellectual heritage back to the Enlightenment. The Age of Enlightenment was preceded by and closely associated with the scientific revolution, earlier philosophers whose work influenced the Enlightenment included Francis Bacon, René Descartes, John Locke, and Baruch Spinoza. The major figures of the Enlightenment included Cesare Beccaria, Voltaire, Denis Diderot, Jean-Jacques Rousseau, David Hume, Adam Smith, Benjamin Franklin visited Europe repeatedly and contributed actively to the scientific and political debates there and brought the newest ideas back to Philadelphia. Thomas Jefferson closely followed European ideas and later incorporated some of the ideals of the Enlightenment into the Declaration of Independence, others like James Madison incorporated them into the Constitution in 1787. The most influential publication of the Enlightenment was the Encyclopédie, the ideas of the Enlightenment played a major role in inspiring the French Revolution, which began in 1789. After the Revolution, the Enlightenment was followed by an intellectual movement known as Romanticism. René Descartes rationalist philosophy laid the foundation for enlightenment thinking and his attempt to construct the sciences on a secure metaphysical foundation was not as successful as his method of doubt applied in philosophic areas leading to a dualistic doctrine of mind and matter. His skepticism was refined by John Lockes 1690 Essay Concerning Human Understanding and his dualism was challenged by Spinozas uncompromising assertion of the unity of matter in his Tractatus and Ethics. Both lines of thought were opposed by a conservative Counter-Enlightenment. In the mid-18th century, Paris became the center of an explosion of philosophic and scientific activity challenging traditional doctrines, the political philosopher Montesquieu introduced the idea of a separation of powers in a government, a concept which was enthusiastically adopted by the authors of the United States Constitution. Francis Hutcheson, a philosopher, described the utilitarian and consequentialist principle that virtue is that which provides, in his words. Much of what is incorporated in the method and some modern attitudes towards the relationship between science and religion were developed by his protégés David Hume and Adam Smith. Hume became a figure in the skeptical philosophical and empiricist traditions of philosophy. Immanuel Kant tried to reconcile rationalism and religious belief, individual freedom and political authority, as well as map out a view of the sphere through private
14.
Businessman
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An entrepreneur is an example of a businessperson. The term may mean someone who is involved in an upper-level management role in a corporation, company, enterprise, firm, organization. This can especially apply to the founder, an owner, a manager, since a businessman can mean anyone in industry or commerce, businessmen have existed as long as industry and commerce have existed. Commerce can simply mean trade, and trade has existed through all of recorded history, the first businessmen were traders, or merchants. Merchants emerged as a class in medieval Italy, between 1300 and 1500, modern accounting, the bill of exchange, and limited liability were invented, and thus the world saw the first true bankers, who are certainly businessmen. Around the same time, Europe saw the emergence of rich merchants and this rise of the merchant class came as Europe needed a middleman for the first time, and these burghers or bourgeois were the people who played this role. Europe became the dominant global power in the 16th century. In this period, Europe developed and used paper money, checks, developments in actuarial science led to insurance. Together, these new tools were used by a new kind of businessman and these people owned or financed businesses as bankers, but they were not merchants of goods. These capitalists were a force in the Industrial Revolution. The newest kind of businessperson is the manager, one of the first true managers was Robert Owen, an industrialist in Scotland. He studied the problems of productivity and motivation, and was followed by Frederick Winslow Taylor, after World War I, management became popular due to the example of Herbert Hoover and the Harvard Business School, which offered degrees in business administration. There are no prescribed educational qualifications, rules or guidelines which one may follow, a person owning a small gas station in a local market is as much as a businessperson as a person who owns and leads a large Silicon Valley technology giant. There are many paths to becoming a businessperson, hence, no rigid formal educational qualification requirements can be stated for becoming a businessperson. However, there are attributes that successful businessmen must possess, Tact financial and business savvy, courage, leadership, vision, creativity, imagination. Among these components include branding, advertising, and public relations, well-balanced consistency in their business approach. Interest in giving back to society through philanthropy or venture capitalism for future socioeconomic development, hence, a businessperson should have the ability to take prompt decisions. Determination, courage and perseverance, They must have strong power and determination
15.
Scientist
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A scientist is a person engaging in a systematic activity to acquire knowledge that describes and predicts the natural world. In a more restricted sense, a scientist may refer to an individual who uses the scientific method, the person may be an expert in one or more areas of science. The term scientist was coined by the theologian, philosopher and historian of science William Whewell and this article focuses on the more restricted use of the word. Scientists perform research toward a comprehensive understanding of nature, including physical, mathematical and social realms. Philosophers aim to provide an understanding of fundamental aspects of reality and experience, often pursuing inquiries with conceptual, rather than empirical. When science is done with a goal toward practical utility, it is called applied science, an applied scientist may not be designing something in particular, but rather is conducting research with the aim of developing new technologies and practical methods. When science seeks to answer questions about aspects of reality it is sometimes called natural philosophy. Science and technology have continually modified human existence through the engineering process, as a profession the scientist of today is widely recognized. Jurisprudence and mathematics are often grouped with the sciences, some of the greatest physicists have also been creative mathematicians and lawyers. There is a continuum from the most theoretical to the most empirical scientists with no distinct boundaries, in terms of personality, interests, training and professional activity, there is little difference between applied mathematicians and theoretical physicists. Scientists can be motivated in several ways, many have a desire to understand why the world is as we see it and how it came to be. They exhibit a strong curiosity about reality, other motivations are recognition by their peers and prestige, or the desire to apply scientific knowledge for the benefit of peoples health, the nations, the world, nature or industries. Scientists tend to be motivated by direct financial reward for their work than other careers. As a result, scientific researchers often accept lower average salaries when compared with other professions which require a similar amount of training. The number of scientists is vastly different from country to country, for instance, there are only 4 full-time scientists per 10,000 workers in India while this number is 79 for the United Kingdom and the United States. According to the US National Science Foundation 4.7 million people with science degrees worked in the United States in 2015, across all disciplines, the figure included twice as many men as women. Of that total, 17% worked in academia, that is, at universities and undergraduate institutions, 5% of scientists worked for the federal government and about 3. 5% were self-employed. Of the latter two groups, two-thirds were men, 59% of US scientists were employed in industry or business, and another 6% worked in non-profit positions
16.
Dutch Golden Age
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The Dutch Golden Age was a period in Dutch history, roughly spanning the 17th century, in which Dutch trade, science, military, and art were among the most acclaimed in the world. The first half is characterized by the Eighty Years War which ended in 1648, the Golden Age continued in peacetime during the Dutch Republic until the end of the century. The Netherlandss transition from a possession of the Holy Roman Empire in the 1590s to the foremost maritime, in 1568, the Seven Provinces that later signed the Union of Utrecht started a rebellion against Philip II of Spain that led to the Eighty Years War. Antwerp fell on August 17,1585 after a siege, the United Provinces fought on until the Twelve Years Truce, which did not end the hostilities. Under the terms of the surrender of Antwerp in 1585, the Protestant population were given four years to settle their affairs before leaving the city, similar arrangements were made in other places. Protestants were especially well-represented among the craftsmen and rich merchants of the port cities of Bruges, Ghent. More moved to the north between 1585 and 1630 than Catholics moved in the direction, although there were also many of these. Many of those moving north settled in Amsterdam, transforming what was a port into one of the most important ports. The Pilgrim Fathers also spent time there before their voyage to the New World, Ronald Findlay and Kevin H. O’Rourke contribute part of the Dutch ascendancy to its Calvinistic ethic, which promoted thrift and education. This contributed to the lowest interest rates and the highest literacy rates in Europe, several other factors also contributed to the flowering of trade, industry, the arts and the sciences in the Netherlands during this time. A necessary condition was a supply of energy from windmills and from peat. The invention of the sawmill enabled the construction of a massive fleet of ships for worldwide trading. In 1602 the Dutch East India Company was founded and it was the first-ever multinational corporation, financed by shares that established the first modern stock exchange. This company received a Dutch monopoly on Asian trade and would keep this for two centuries and it became the worlds largest commercial enterprise of the 17th century. Spices were imported in bulk and brought huge profits, due to the efforts and risks involved and this is remembered to this day in the Dutch word peperduur, meaning something is very expensive, reflecting the prices of spices at the time. To finance the trade within the region, the Bank of Amsterdam was established in 1609. According to Ronald Findlay and Kevin H. O’Rourke, geography favored the Dutch Republic and they write, The foundations were laid by taking advantage of location, midway between the Bay of Biscay and the Baltic. The Dutch share of European shipping tonnage was enormous, well over half during most of the period of their ascendancy, from here the Dutch traded between China and Japan and paid tribute to the Shogun
17.
Microbiologist
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The term microbiologist comes from the Greek mīkros meaning small βίος, and bios, meaning life -λογία, combined with -logia meaning one who studies. A microbiologist is a biological scientist who studies microscopic life forms, microbiologists investigate the growth, interactions and characteristics of microscopic organisms such as bacteria, algae, fungi, and some types of parasites and their vectors. They contribute much to the field by trying to understand and learn about the interaction between these microbes and the environment and also among themselves and other organisms, most microbiologists are qualified to work in offices and/or research facilities, such as a laboratory as well as in the academia. There, they conduct experiments that help them analyze microbes and their importance, a microbiologists work is often repeated or improved in order to establish accurate research. Most microbiologists specialize in environmental, food, agricultural, industrial or medical aspects of microbiology including, virology, immunology, bioinformatics, many microbiologists use biotechnology to advance the understanding of cell reproduction and human disease. Some microbiologists have contributed to knowledge of pathogens and disease-causing microbes, while others, study their interaction with the environment and their use as potential environmental pollution cleaners. Microbiology is a subset of science that often overlaps with other subjects surrounding biology. Nonetheless, the spectrum of fields, a microbiologists can work on is immense, there were 16,900 microbiologists employed in the United States in 2008, this number was projected to increase by over 12 percent in the next decade
18.
Draper
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Draper was originally a term for a retailer or wholesaler of cloth that was mainly for clothing. A draper may additionally operate as a merchant or a haberdasher. Drapers were an important trade guild during the period, when the sellers of cloth operated out of drapers shops. However the original meaning of the term has now fallen out of use. In 1724, Jonathan Swift wrote a series of pamphlets in the guise of a draper called the Drapiers Letters. A draper is now defined as a highly skilled role within the fashion industry and this is an alternative method to drafting, when the garment is initially worked out from measurements on paper. A fashion draper may also be known as a first hand because they are often the most skilled creator in the workshop, however a first hand in a costume studio is often an assistant to the draper. They are responsible for cutting the fabric with the patterns and assisting in costume fittings, draper Drapery Haberdasher Millinery Kraków Cloth Hall, Renaissance landmark of Kraków, Poland Worshipful Company of Drapers
19.
Unicellular organism
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A unicellular organism, also known as a single-celled organism, is an organism that consists of only one cell, unlike a multicellular organism that consists of more than one cell. Historically, simple unicellular organisms have been referred to as monads, though this term is used more specifically to describe organisms of the genus Monas. The main groups of organisms are bacteria, archaea, protozoa, unicellular algae. Unicellular organisms fall into two categories, prokaryotic organisms and eukaryotic organisms. Unicellular organisms are thought to be the oldest form of life, prokaryotes, most Protista, and some fungi are unicellular. Although some of these live in colonies, they dont exhibit specialization. These organisms live together, and each cell in the colony is the same, however, each individual cell must carry out all life processes to survive. In contrast, even the simplest multicellular organisms have cells that depend on each other to survive, most multicellular organisms have a unicellular life-cycle stage. Gametes, for example, are reproductive unicells for multicellular organisms, additionally, multicellularity appears to have evolved independently many times in the history of life. Some organisms are partially uni- and multicellular, like Dictyostelium discoideum, additionally, unicellular organisms can be multinucleate, like Myxogastria and Plasmodium. Candidatus Magnetoglobus multicellular, related to Deltaproteobacteria, is a multicellular prokaryote and it is neither unicellular, nor a colony. Primitive cells, often referred to as protocells, are the precursors to todays unicellular organisms, the RNA world hypothesis assumes that RNA molecules could form in abiotic conditions, which would require nucleic acids and ribose to be present. Theoretical and experimental findings show that nucleic acids and sugars could have been synthesized in early prebiotic conditions, compartmentalization was necessary for chemical reactions to be more likely as well as to differentiate reactions with the external environment. For example, an early RNA replicator ribozyme may have replicated other replicator ribozymes of different RNA sequences if not kept separate, when amphiphiles like lipids are placed in water, the hydrophobic tails aggregate to form micelles and vesicles, with the hydrophilic ends facing outwards. Primitive cells likely used self-assembling fatty-acid vesicles to separate chemical reactions, because of their simplicity and ability to self-assemble in water, its likely that these simple membranes predated other forms of early biological molecules. Prokaryotes lack membrane-bound organelles, such as mitochondria or a nucleus, instead, most prokaryotes have an irregular region that contains DNA, known as the nucleoid. Most prokaryotes have a single, circular chromosome, which is in contrast to eukaryotes, nutritionally, prokaryotes have the ability to utilize a wide range of organic and inorganic material for use in metabolism, including sulfur, cellulose, ammonia, or nitrite. Prokaryotes as a whole are ubiquitous in the environment and exist in extreme environments as well, bacteria are one of the world’s oldest forms of life, and are found virtually everywhere in nature
20.
Bacterium
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Bacteria constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a number of shapes, ranging from spheres to rods, Bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, Bacteria also live in symbiotic and parasitic relationships with plants and animals. Most bacteria have not been characterised, and only half of the bacterial phyla have species that can be grown in the laboratory. The study of bacteria is known as bacteriology, a branch of microbiology, There are typically 40 million bacterial cells in a gram of soil and a million bacterial cells in a millilitre of fresh water. There are approximately 5×1030 bacteria on Earth, forming a biomass which exceeds that of all plants, Bacteria are vital in many stages of the nutrient cycle by recycling nutrients such as the fixation of nitrogen from the atmosphere. The nutrient cycle includes the decomposition of bodies and bacteria are responsible for the putrefaction stage in this process. In March 2013, data reported by researchers in October 2012, was published and it was suggested that bacteria thrive in the Mariana Trench, which with a depth of up to 11 kilometres is the deepest known part of the oceans. Other researchers reported related studies that microbes thrive inside rocks up to 580 metres below the sea floor under 2.6 kilometres of ocean off the coast of the northwestern United States. According to one of the researchers, You can find microbes everywhere—theyre extremely adaptable to conditions, the vast majority of the bacteria in the body are rendered harmless by the protective effects of the immune system, though many are beneficial particularly in the gut flora. However several species of bacteria are pathogenic and cause diseases, including cholera, syphilis, anthrax, leprosy. The most common fatal diseases are respiratory infections, with tuberculosis alone killing about 2 million people per year. In developed countries, antibiotics are used to treat infections and are also used in farming, making antibiotic resistance a growing problem. Once regarded as constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and these evolutionary domains are called Bacteria and Archaea. The ancestors of modern bacteria were unicellular microorganisms that were the first forms of life to appear on Earth, for about 3 billion years, most organisms were microscopic, and bacteria and archaea were the dominant forms of life. In 2008, fossils of macroorganisms were discovered and named as the Francevillian biota, however, gene sequences can be used to reconstruct the bacterial phylogeny, and these studies indicate that bacteria diverged first from the archaeal/eukaryotic lineage. Bacteria were also involved in the second great evolutionary divergence, that of the archaea, here, eukaryotes resulted from the entering of ancient bacteria into endosymbiotic associations with the ancestors of eukaryotic cells, which were themselves possibly related to the Archaea
21.
Red blood cell
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RBCs take up oxygen in the lungs, or gills of fish, and release it into tissues while squeezing through the bodys capillaries. The cytoplasm of erythrocytes is rich in hemoglobin, a biomolecule that can bind oxygen and is responsible for the red color of the cells. In humans, mature red cells are flexible and oval biconcave disks. They lack a nucleus and most organelles, in order to accommodate maximum space for hemoglobin, they can be viewed as sacks of hemoglobin. Approximately 2.4 million new erythrocytes are produced per second in human adults, the cells develop in the bone marrow and circulate for about 100–120 days in the body before their components are recycled by macrophages. Each circulation takes about 60 seconds, approximately a quarter of the cells in the human body are red blood cells. Nearly half of the volume is red blood cells. Red blood cells are known as RBCs, red cells, red blood corpuscles, haematids. Packed red blood cells are red blood cells that have donated, processed. Almost all vertebrates, including all mammals and humans, have red blood cells, red blood cells are cells present in blood in order to transport oxygen. The only known vertebrates without red blood cells are the crocodile icefish, they live in very cold water. While they no longer use hemoglobin, remnants of hemoglobin genes can be found in their genome, oxygen can easily diffuse through the red blood cells cell membrane. Myoglobin, a related to hemoglobin, acts to store oxygen in muscle cells. The color of red cells is due to the heme group of hemoglobin. However, blood can appear bluish when seen through the vessel wall, pulse oximetry takes advantage of the hemoglobin color change to directly measure the arterial blood oxygen saturation using colorimetric techniques. Hemoglobin also has a high affinity for carbon monoxide, forming carboxyhemoglobin which is a very bright red in color. Flushed, confused patients with a reading of 100% on pulse oximetry are sometimes found to be suffering from carbon monoxide poisoning. The red blood cells of mammals are typically shaped as disks, flattened and depressed in the center, with a dumbbell-shaped cross section
22.
Crystal
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A crystal or crystalline solid is a solid material whose constituents are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, the scientific study of crystals and crystal formation is known as crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification, the word crystal derives from the Ancient Greek word κρύσταλλος, meaning both ice and rock crystal, from κρύος, icy cold, frost. Examples of large crystals include snowflakes, diamonds, and table salt, most inorganic solids are not crystals but polycrystals, i. e. many microscopic crystals fused together into a single solid. Examples of polycrystals include most metals, rocks, ceramics, a third category of solids is amorphous solids, where the atoms have no periodic structure whatsoever. Examples of amorphous solids include glass, wax, and many plastics, Crystals are often used in pseudoscientific practices such as crystal therapy, and, along with gemstones, are sometimes associated with spellwork in Wiccan beliefs and related religious movements. The scientific definition of a crystal is based on the arrangement of atoms inside it. A crystal is a solid where the form a periodic arrangement. For example, when liquid water starts freezing, the change begins with small ice crystals that grow until they fuse. Most macroscopic inorganic solids are polycrystalline, including almost all metals, ceramics, ice, rocks, solids that are neither crystalline nor polycrystalline, such as glass, are called amorphous solids, also called glassy, vitreous, or noncrystalline. These have no periodic order, even microscopically, there are distinct differences between crystalline solids and amorphous solids, most notably, the process of forming a glass does not release the latent heat of fusion, but forming a crystal does. A crystal structure is characterized by its cell, a small imaginary box containing one or more atoms in a specific spatial arrangement. The unit cells are stacked in three-dimensional space to form the crystal, the symmetry of a crystal is constrained by the requirement that the unit cells stack perfectly with no gaps. There are 219 possible crystal symmetries, called space groups. These are grouped into 7 crystal systems, such as cubic crystal system or hexagonal crystal system, Crystals are commonly recognized by their shape, consisting of flat faces with sharp angles. Euhedral crystals are those with obvious, well-formed flat faces, anhedral crystals do not, usually because the crystal is one grain in a polycrystalline solid. The flat faces of a crystal are oriented in a specific way relative to the underlying atomic arrangement of the crystal. This occurs because some surface orientations are more stable than others, as a crystal grows, new atoms attach easily to the rougher and less stable parts of the surface, but less easily to the flat, stable surfaces
23.
Blood
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Blood is a body fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells. In vertebrates, it is composed of blood cells suspended in blood plasma, plasma, which constitutes 55% of blood fluid, is mostly water, and contains dissipated proteins, glucose, mineral ions, hormones, carbon dioxide, and blood cells themselves. Albumin is the protein in plasma, and it functions to regulate the colloidal osmotic pressure of blood. The blood cells are red blood cells, white blood cells. The most abundant cells in blood are red blood cells. These contain hemoglobin, a protein, which facilitates oxygen transport by reversibly binding to this respiratory gas. In contrast, carbon dioxide is mostly transported extracellularly as bicarbonate ion transported in plasma, vertebrate blood is bright red when its hemoglobin is oxygenated and dark red when it is deoxygenated. Some animals, such as crustaceans and mollusks, use hemocyanin to carry oxygen, insects and some mollusks use a fluid called hemolymph instead of blood, the difference being that hemolymph is not contained in a closed circulatory system. In most insects, this blood does not contain oxygen-carrying molecules such as hemoglobin because their bodies are small enough for their system to suffice for supplying oxygen. Jawed vertebrates have an immune system, based largely on white blood cells. White blood cells help to resist infections and parasites, platelets are important in the clotting of blood. Arthropods, using hemolymph, have hemocytes as part of their immune system, Blood is circulated around the body through blood vessels by the pumping action of the heart. Medical terms related to blood often begin with hemo- or hemato- from the Greek word αἷμα for blood. In terms of anatomy and histology, blood is considered a form of connective tissue, given its origin in the bones. The average adult has a volume of roughly 5 litres. These blood cells consist of erythrocytes, leukocytes, and thrombocytes, by volume, the red blood cells constitute about 45% of whole blood, the plasma about 54. 3%, and white cells about 0. 7%. Whole blood exhibits non-Newtonian fluid dynamics, if all human hemoglobin were free in the plasma rather than being contained in RBCs, the circulatory fluid would be too viscous for the cardiovascular system to function effectively. One microliter of blood contains,4.7 to 6.1 million,4.2 to 5.4 million erythrocytes, Red blood cells contain the bloods hemoglobin, mature red blood cells lack a nucleus and organelles in mammals
24.
Capillary
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Capillaries are the smallest of a bodys blood vessels that make up the microcirculation. Their endothelial linings are only one layer thick. Lymph capillaries connect with larger vessels to drain lymph collected in the microcirculation. The term angiogenesis denotes the formation of new capillaries from pre-existing blood vessels, blood flows from the heart through arteries, which branch and narrow into arterioles, and then branch further into capillaries where nutrients and wastes are exchanged. The capillaries then join and widen to become venules, which in turn widen and converge to become veins, capillaries do not function on their own, but instead in a capillary bed, an interweaving network of capillaries supplying organs and tissues. The more metabolically active a cell or environment is, the capillaries are required to supply nutrients. Metarterioles are found primarily in the mesenteric microcirculation and were thought to be present in most or all capillary beds. The physiological mechanisms underlying precapillary resistance is no longer considered to be a result of precapillary sphincters outside of the mesentery organ, lymphatic capillaries are slightly larger in diameter than blood capillaries, and have closed ends. This structure permits interstitial fluid to flow into them but not out, lymph capillaries have a greater internal oncotic pressure than blood capillaries, due to the greater concentration of plasma proteins in the lymph. However lipid-soluble molecules can diffuse through the endothelial cell membranes along concentration gradients. Tight junctions can be divided into two subtypes, Those with numerous transport vesicles, which are found primarily in skeletal muscles, fingers, gonads. Those with few vesicles, which are found in the central nervous system. These capillaries are a constituent of the blood–brain barrier, fenestrated capillaries have pores in the endothelial cells that are spanned by a diaphragm of radially oriented fibrils and allow small molecules and limited amounts of protein to diffuse. In the renal glomerulus there are cells with no diaphragms, called foot processes or pedicels. Both of these types of vessels have continuous basal laminae and are primarily located in the endocrine glands, intestines, pancreas. Sinusoidal capillaries are a type of open-pore capillary, that have larger openings in the endothelium. These types of blood vessels allow red and white cells and various serum proteins to pass. These capillaries lack pinocytotic vesicles, and therefore utilize gaps present in cell junctions to permit transfer between cells, and hence across the membrane
25.
Royal Society
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Founded in November 1660, it was granted a royal charter by King Charles II as The Royal Society. The society is governed by its Council, which is chaired by the Societys President, according to a set of statutes and standing orders. The members of Council and the President are elected from and by its Fellows, the members of the society. As of 2016, there are about 1,600 fellows, allowed to use the postnominal title FRS, there are also royal fellows, honorary fellows and foreign members, the last of which are allowed to use the postnominal title ForMemRS. The Royal Society President is Venkatraman Ramakrishnan, who took up the post on 30 November 2015, since 1967, the society has been based at 6–9 Carlton House Terrace, a Grade I listed building in central London which was previously used by the Embassy of Germany, London. The Royal Society started from groups of physicians and natural philosophers, meeting at variety of locations and they were influenced by the new science, as promoted by Francis Bacon in his New Atlantis, from approximately 1645 onwards. A group known as The Philosophical Society of Oxford was run under a set of rules still retained by the Bodleian Library, after the English Restoration, there were regular meetings at Gresham College. It is widely held that these groups were the inspiration for the foundation of the Royal Society, I will not say, that Mr Oldenburg did rather inspire the French to follow the English, or, at least, did help them, and hinder us. But tis well known who were the men that began and promoted that design. This initial royal favour has continued and, since then, every monarch has been the patron of the society, the societys early meetings included experiments performed first by Hooke and then by Denis Papin, who was appointed in 1684. These experiments varied in their area, and were both important in some cases and trivial in others. The Society returned to Gresham in 1673, there had been an attempt in 1667 to establish a permanent college for the society. Michael Hunter argues that this was influenced by Solomons House in Bacons New Atlantis and, to a lesser extent, by J. V. The first proposal was given by John Evelyn to Robert Boyle in a letter dated 3 September 1659, he suggested a scheme, with apartments for members. The societys ideas were simpler and only included residences for a handful of staff and these plans were progressing by November 1667, but never came to anything, given the lack of contributions from members and the unrealised—perhaps unrealistic—aspirations of the society. During the 18th century, the gusto that had characterised the early years of the society faded, with a number of scientific greats compared to other periods. The pointed lightning conductor had been invented by Benjamin Franklin in 1749, during the same time period, it became customary to appoint society fellows to serve on government committees where science was concerned, something that still continues. The 18th century featured remedies to many of the early problems
26.
Warmond
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Warmond is a village and former municipality in the western Netherlands, north of Leiden in the province of South Holland. The municipality covered an area of 14.42 km² of which 4.42 km² is water, together with Sassenheim and Voorhout, it became part of the Teylingen municipality on 1 January 2006. Warmond is located in a called the Dune and Bulb Region. Warmond is situated on a system called Kagerplassen and has several marinas which make it a popular recreational area for boating. An 18th-century mansion called Huys te Warmond is located north of the village along the main road, the first railway accident in the Netherlands occurred near Warmond on 10 March 1843. When it was a municipality, Warmond had the highest death rate in all of Netherlands, now Laren has the highest Death Rate in all of Netherlands. Birth Rate,8.97 per 1000 Death Rate,23.10 per 1000 NGR, the Dutch painter Jan Steen lived in Warmond for a brief period, his house can still be visited. It is also the home of Dutch author Maarten t Hart who regularly uses the village, antonie van Leeuwenhoek, commonly known as the Father of Microbiology, and considered to be the first microbiologist, was schooled in Warmond. The film comedian Truus van Aalten died in Warmond in 1999, official website Map of Warmond More detailed map of west of Warmond Historic photos of Warmond
27.
Benthuizen
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Benthuizen is a village in the Dutch province of South Holland. It is a part of the municipality of Alphen aan den Rijn, in 2001, the town of Benthuizen had 3215 inhabitants. The built-up area of the town was 0.51 km², the statistical area Benthuizen, which also can include the peripheral parts of the village, as well as the surrounding countryside, has a population of around 3450. Benthuizen has a history that goes back to the beginning of the 12th century. Until 1991 Benthuizen was an independent municipality in that year the municipality became part of the larger municipality Rijneveld, in 1993 the name was changed to Rijnwoude. The HSL-Zuid being constructed passes Benthuizen on the eastern side, also the new Bentwoud is planted to the east of Benthuizen. Benthuizen has several buildings that are officially designated monuments, one of these is the historic windmill known as molen de Haas
28.
William Davidson of Curriehill
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Sir William Davidson, 1st Baronet of Curriehill was a Scottish tradesman in Amsterdam, an agent and a spy for the King and a member of his Privy Council. Nothing is known about his youth and ancestors, but he settled in Holland after 1640, in 1645 he married Geertruid Schuring and stated that he was 29. In 1648 he appointed Anthony van Leeuwenhoek as an assistant, van Leeuwenhoek stayed six years in his service. Davidson lived and worked in Warmoesstraat, close to the Oude Kerk, during the English Civil War he choose the side of the Stuarts. He remarried Geertruid van Dueren who died in 1658, in those years he was living on Nieuwe Waalseiland, close to the harbour and selling wine in Stockholm. In May 1660 he went to see Charles II in the Hague on his way to England. In July 1660 Mary Stuart lived in his house on Herengracht, to settle an agreement with the Amsterdam burgomasters on the education of her grandson William III of Orange, only ten years old. In February he had married Elisabeth Klenck, a sister of Johannes Klencke, in 1662 he was appointed as the Kings agent in Amsterdam, he was already knighted as a baronet by Charles II of England and in 1661 as the conservator of the staple in Veere. In 1664, during the Second Dutch War he moved to Hamburg, in 1666 he was involved in a salt company in Denmark, together with Cort Adeler. In 1670 he was allowed to start mining for copper in Klaebu and his note from King Kristian IV of Denmark was given to him October 14. The date is in references from letters send to and from the king Kristian IV of Denmark and he started Ulrichsdal Mining Company, and build a melting-cabin at Hyttefossen in Klaebu. There are still rest of his building there and he also mined after iron at Mostadmark in Malvik east of Trondheim. The rest of buildings are still there and he became broke and owed the king a lot of money, and suddenly he was gone from Trondheim. But his history still lives, and so do his buildings, in 1666 he sold his ironworks in Drontheim to his brother-in-law Coenraad van Klenck, as well as his part in the salt company. In 1667 he lived in Edinburgh, Davidson intermediated between Charles II and Johan de Witt. In 1668 he tried to move the staple from Veere, a Dutch town with a large Scottish population to Dordrecht, in 1668 he became Lord of Curriehill. In 1671 he resigned from his post and around 1672 he was involved in the trade on Virginia. In an unknown year, but after 1678, when he made his will in Amsterdam, four children Bernard, Elisabeth, Catharina Geertrui, Agnes inherited, Catharina his Indonesian silver, and the portraits of his parents-in-law
29.
Chamberlain (office)
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A chamberlain is an officer in charge of managing a household. In many countries there are ceremonial posts associated with the household of the sovereign, historically, many institutions and governments – monasteries, cathedrals and cities – also had the post of chamberlain, who usually had charge of finances. The Finance Director of the City of London is still called the Chamberlain, while New York City had such a chamberlain, the chamberlains are not employed by the court, but serve during ceremonial occasions such as state visits, audiences and official dinners. In Thailand the head of the Bureau of the Royal Household is titled the Lord Chamberlain and he has several Grand Chamberlains as his deputy, usually in charge of a specific portfolio. Lord Great Chamberlain Lord Chamberlain Chamberlain of the City of London Lord Chamberlain of Scotland Chamberlain of the City of New York Camerlengo of the Holy Roman Church Papal Gentlemen
30.
Schepen
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A schepen is a municipal office in Dutch-speaking countries. It has been replaced by the wethouder in the Netherlands itself, depending on the context, it may be roughly translated as an alderman, councillor, or magistrate. The Dutch word schepen has its origins in the Old Saxon word scepino and is related to the German word Schöffe, the word made its way into early Medieval Latin as scabinus in France. Originally, the referred to member of a council of deciders – literally. Their judgments originally required ratification by a majority of the people present, later, mandatory attendance and ratification were no longer required. In Flanders, the term schepen is the Dutch term used for an alderman who serves on the executive board in the municipal government. Though there is no direct English cognate, the Dutch term schepen is generally translated into English as alderman, schepen has a slightly different meaning depending on whether the term is used in a historic context or in a modern political context. Later the name of the institute of the council of Aldermen became the Schepenbank, the Schepenen both legislated, ratified treaties and acted as judges. Each Flemish municipality has a town council. During the first meeting of an elected town council, council members vote by secret ballot to elect the schepenen. An absolute majority is required for a schepen to be voted in, once elected, the schepenen serve with the mayor on an executive board charged with the day-to-day management of town and city affairs. The executive board is referred to in Dutch as the college van burgemeester en schepenen, Schepenen are often assigned portfolio areas such as culture, education or city planning. They have several executive responsibilities relating to their portfolios and thus assist the mayor in governing the town or city, the total number of schepenen in a town depends on its population. A city like Antwerp has ten, whereas Herstappe, the smallest community in Belgium, has only two, since a schepen is also an ordinary alderman or town councillor, he or she must be re-elected to remain in the office of schepen. Since 2006, Belgian citizenship has not been a requirement for the position, in the Netherlands, the term schepen has been discontinued and replaced by wethouder. Historically, schepenen had administrative and judicial duties in a Dutch seigneury, when acting in an administrative capacity, a schepen was similar to an alderman or town councillor, and is usually referred to in that way in English. When acting in a capacity, the schepenen were often referred to as the schepenbank. One of the functions of the schepenbank was to pass judgment on criminals, as a result, the word schepen is often translated into English as magistrate in this Dutch historical context
31.
Surveying
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Surveying or land surveying is the technique, profession, and science of determining the terrestrial or three-dimensional position of points and the distances and angles between them. A land surveying professional is called a land surveyor, Surveyors work with elements of geometry, trigonometry, regression analysis, physics, engineering, metrology, programming languages and the law. Surveying has been an element in the development of the environment since the beginning of recorded history. The planning and execution of most forms of construction require it and it is also used in transport, communications, mapping, and the definition of legal boundaries for land ownership. It is an important tool for research in other scientific disciplines. Basic surveyance has occurred since humans built the first large structures, the prehistoric monument at Stonehenge was set out by prehistoric surveyors using peg and rope geometry. In ancient Egypt, a rope stretcher would use simple geometry to re-establish boundaries after the floods of the Nile River. The almost perfect squareness and north-south orientation of the Great Pyramid of Giza, built c.2700 BC, the Groma instrument originated in Mesopotamia. The mathematician Liu Hui described ways of measuring distant objects in his work Haidao Suanjing or The Sea Island Mathematical Manual, the Romans recognized land surveyors as a profession. They established the basic measurements under which the Roman Empire was divided, Roman surveyors were known as Gromatici. In medieval Europe, beating the bounds maintained the boundaries of a village or parish and this was the practice of gathering a group of residents and walking around the parish or village to establish a communal memory of the boundaries. Young boys were included to ensure the memory lasted as long as possible, in England, William the Conqueror commissioned the Domesday Book in 1086. It recorded the names of all the owners, the area of land they owned, the quality of the land. It did not include maps showing exact locations, abel Foullon described a plane table in 1551, but it is thought that the instrument was in use earlier as his description is of a developed instrument. Gunters chain was introduced in 1620 by English mathematician Edmund Gunter and it enabled plots of land to be accurately surveyed and plotted for legal and commercial purposes. Leonard Digges described a Theodolite that measured horizontal angles in his book A geometric practice named Pantometria, joshua Habermel created a theodolite with a compass and tripod in 1576. Johnathon Sission was the first to incorporate a telescope on a theodolite in 1725, in the 18th century, modern techniques and instruments for surveying began to be used. Jesse Ramsden introduced the first precision theodolite in 1787 and it was an instrument for measuring angles in the horizontal and vertical planes
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Holland
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Holland is a region and former province on the western coast of the Netherlands. The name Holland is also used informally to refer to the whole of the country of the Netherlands. From the 10th to the 16th century, Holland proper was a political region within the Holy Roman Empire as a county ruled by the Counts of Holland. By the 17th century, Holland had risen to become a maritime and economic power, the name Holland first appeared in sources in 866 for the region around Haarlem, and by 1064 was being used as the name of the entire county. By this time, the inhabitants of Holland were referring to themselves as Hollanders, Holland is derived from the Middle Dutch term holtland. This spelling variation remained in use until around the 14th century, a popular folk etymology holds that Holland is derived from hol land and was inspired by the low-lying geography of Holland. The proper name of the area in both Dutch and English is Holland, Holland is a part of the Netherlands. Holland is informally used in English and other languages, including sometimes the Dutch language itself, the people of Holland are referred to as Hollanders in both Dutch and English. Today this refers specifically to people from the current provinces of North Holland, strictly speaking, the term Hollanders does not refer to people from the other provinces in the Netherlands, but colloquially Hollanders is sometimes used in this wider sense. In Dutch, the Dutch word Hollands is the form for Holland. In English, Dutch refers to the Netherlands as a whole, the word Hollandish is no longer in common use. Hollandic is the name give to the dialect spoken in Holland, and is occasionally also used by historians. Initially, Holland was a corner of the Holy Roman Empire. Gradually, its importance increased until it began to have a decisive. Until the start of the 12th century, the inhabitants of the area that became Holland were known as Frisians, the area was initially part of Frisia. At the end of the 9th century, West-Frisia became a county in the Holy Roman Empire. The first Count known about with certainty was Dirk I, who ruled from 896 to 931 and he was succeeded by a long line of counts in the House of Holland. When John I, count of Holland, died childless in 1299, by the time of William V the count of Holland was also the count of Hainaut and Zealand
33.
The Geographer
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The Geographer is a painting created by Dutch artist Johannes Vermeer in 1668–1669, and is now in the collection of the Städelsches Kunstinstitut museum in Frankfurt, Germany. It is closely related to Vermeers The Astronomer, for using the same model in the same dress. A2017 study indicated that the canvas for the two came from the same bolt of material. This is one of three paintings Vermeer signed and dated. Details of the face are slightly blurred, suggesting movement. His eyes are narrowed, perhaps squinting in the sunlight or an indication of intense thinking, Carr asserts that the painting depicts a flash of inspiration or even revelation. The drawn curtain on the left and the position of the carpet on the table—pushed back—are both symbols of revelation. He grips a book as if hes about to snatch it up to corroborate his ideas, the globe was published in Amsterdam in 1618 by Jodocus Hondius. The globe is turned toward the Indian Ocean, where the Dutch East India Company was then active, Vermeer used an impasto technique to apply pointillé dots, not to indicate light reflected more strongly on certain points but to emphasize the dull ochre cartouche frame printed on the globe. Since the globe can be identified, we know the decorative cartouche includes a plea for information for future editions—reflecting the theme of revelation in the painting, the sea chart on the wall of all the Sea coasts of Europe has been identified as one published by Willem Jansz Blaeu. This accuracy indicates Vermeer had a source familiar with the profession, the Astronomer, which seems to form a pendant with this painting, shows a similar, sophisticated knowledge of cartographic instruments and books, and the same young man modeled for both. That man himself may have been the source of Vermeers correct display of surveying and geographical instruments, Wheelock and others assert the model/source was probably Anthonie van Leeuwenhoek, a contemporary of Vermeer who was also born in Delft. The families of men were in the textile business, and both families had a strong interest in science and optics. A microscopist, van Leeuwenhoek was described after his death as being so skilled in navigation, astronomy, mathematics, philosophy and that one can certainly place him with the most distinguished masteres of the art. Another image of van Leeuwenhoek about 20 years later shows a face and straight nose. At the time Vermeer painted the two works, the scientist would have been about 36 years old and he would have been actively studying for his examination for surveyor, which he passed on February 4,1669. There is no evidence for any kind of relationship between the two men during Vermeers lifetime, although in 1676, van Leeuwenhoek was appointed a trustee for Vermeers estate. The pose of the figure in Vermeers painting takes up precisely the position of Faust in Rembrandts famous etching, according to Lawrence Gowing, similar arrangements can be found in drawings by Nicolaes Maes
34.
Johannes Vermeer
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Johannes, Jan or Johan Vermeer was a Dutch painter who specialized in domestic interior scenes of middle-class life. Vermeer was a successful provincial genre painter in his lifetime. He evidently was not wealthy, leaving his wife and children in debt at his death, Vermeer worked slowly and with great care, and frequently used very expensive pigments. He is particularly renowned for his treatment and use of light in his work. Vermeer painted mostly domestic interior scenes and he was recognized during his lifetime in Delft and The Hague, but his modest celebrity gave way to obscurity after his death. He was barely mentioned in Arnold Houbrakens major source book on 17th-century Dutch painting, since that time, Vermeers reputation has grown, and he is now acknowledged as one of the greatest painters of the Dutch Golden Age. Relatively little was known about Vermeers life until recently and he seems to have been devoted exclusively to his art, living out his life in the city of Delft. Until the 19th century, the sources of information were some registers, a few official documents. John Michael Montias added details on the family from the city archives of Delft in his Artists and Artisans in Delft, Johannes Vermeer was baptized in the Reformed Church on 31 October 1632. His father Reijnier Janszoon was a worker of silk or caffa. As an apprentice in Amsterdam, Reijnier lived on fashionable Sint Antoniesbreestraat, in 1615, he married Digna Baltus. The couple moved to Delft and had a daughter named Geertruy who was baptized in 1620, in 1625, Reijnier was involved in a fight with a soldier named Willem van Bylandt who died from his wounds five months later. Around this time, Reijnier began dealing in paintings, in 1631, he leased an inn, which he called The Flying Fox. In 1635, he lived on Voldersgracht 25 or 26, in 1641, he bought a larger inn on the market square, named after the Flemish town Mechelen. The acquisition of the inn constituted a financial burden. When Vermeers father died in October 1652, Vermeer took over the operation of the art business. In April 1653, Johannes Reijniersz Vermeer married a Catholic girl, the blessing took place in the quiet nearby village of Schipluiden. Vermeers new mother-in-law Maria Thins was significantly wealthier than he, according to art historian Walter Liedtke, Vermeers conversion seems to have been made with conviction
35.
The Astronomer (Vermeer)
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The Astronomer is a painting finished in about 1668 by the Dutch painter Johannes Vermeer. It is oil on canvas,51 cm x 45 cm, portrayals of scientists were a favourite topic in 17th-century Dutch painting and Vermeers oeuvre includes both this astronomer and the slightly later The Geographer. Both are believed to portray the man, possibly Antonie van Leeuwenhoek. A2017 study indicated that the canvas for the two came from the same bolt of material, confirming their close relationship. The astronomers profession is shown by the globe and the book on the table. The provenance of The Astronomer can be traced back to 27 April 1713, in 1940 it was seized from his hotel in Paris by the Nazi Einsatzstab Reichsleiter Rosenberg für die Besetzten Gebiete after the German invasion of France. A small swastika was stamped on the back in black ink, the painting was returned to the Rothschilds after the war, and was acquired by the French state as giving in payment of inheritance taxes in 1983 and then exhibited at the Louvre since 1983. Liedtke, Walter A. Vermeer and the Delft School, Institutiones Astronomicae Geographicae by Adriaan Metius
36.
Executor
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An executor is someone who is responsible for executing, or following through on, an assigned task or duty. The feminine form, executrix, may sometimes be used, the role of an executor should not be confused with that of an executioner, a person who carries out a death sentence ordered by the state or other legal authority. An executor is a term referring to a person named by the maker of a will or nominated by the testator to carry out the instructions of the will. Typically, the executor is the responsible for offering the will for probate. An executor will make sure estate taxes are calculated, necessary forms are filed and they will also assist the attorney with the estate. Additionally, the acts as a legal conveyor who designates where the donations will be sent using the information left in bequests. In most circumstances, the executor is the representative of the estate for all purposes, the executor holds legal title to the estate property, but may not use the title or property for his/her own benefit, unless permitted by the terms of the will. A person who deals with a persons property without proper authority is known as an executor de son tort. When there is no will, a person is said to have died intestate—without testimony, as a result, there is no tangible testimony to follow, and hence there can be no executor. If there is no will or the named in a will do not wish to act. The generic term for executors or administrators is personal representative, in England and Wales, when a person dies intestate in a nursing home, and has no family members who can be traced, those responsible for their care automatically become their executors. Under Scottish law, a representative of any kind is referred to as an executor. In some countries, such as the United States, an executor is entitled to compensation for his or her services. For example, in California the executor is entitled to 4% of the first $100K of estate value, 3% of the next $100K, and so on. In other countries, such as the United Kingdom, the executor is not automatically entitled to compensation, in recent years, custom executors insurance policies have entered the marketplace. These are currently available in countries including Canada, England, many find such cover an attractive proposition as the vast majority of wills allow reasonable expenses, such as the cost of the policy, to be reclaimed from the deceaseds estate
37.
Fraxinus
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Fraxinus /ˈfræksᵻnəs/, English name ash, is a genus of flowering plants in the olive and lilac family, Oleaceae. It contains 45–65 species of medium to large trees, mostly deciduous though a few subtropical species are evergreen. The genus is widespread across much of Europe, Asia and North America, the trees common English name, ash, traces back to the Old English æsc, while the generic name originated in Latin. Both words also mean spear in their respective languages, the leaves are opposite, and mostly pinnately compound, simple in a few species. The seeds, popularly known as keys or helicopter seeds, are a type of known as a samara. Rowans or mountain ashes have leaves and buds superficially similar to those of true ashes, species are organized according to phylogenetic analysis. – California ash or two-petal ash Fraxinus anomala Torr, ex S. Watson – singleleaf ash Fraxinus quadrangulata Michx. – blue ash Fraxinus lowellii – Lowell ash Fraxinus trifoliata Section Melioides sensu lato Fraxinus chiisanensis Fraxinus cuspidata Torr. – fragrant ash Fraxinus platypoda Fraxinus spaethiana Lingelsh, – Späths ash Section Melioides sensu stricto Fraxinus uhdei Lingelsh. – Shamel ash or tropical ash Fraxinus latifolia Benth, – Oregon ash Fraxinus papillosa Lingelsh. – Chihuahua ash Fraxinus americana L. – white ash or American ash Fraxinus profunda Bush – pumpkin ash Fraxinus pennsylvanica Marshall – green ash Fraxinus velutina Torr, – velvet ash or Arizona ash Fraxinus berlandieriana DC. – Mexican ash Fraxinus caroliniana Mill, – Carolina ash Fraxinus texensis Sarg. – Texas ash Section Pauciflorae Fraxinus greggii A. ex DC, – Afghan ash Fraxinus dimorpha Section Fraxinus Fraxinus nigra Marshall – black ash Fraxinus mandschurica Rupr. – Manchurian ash Fraxinus holotricha Koehne Fraxinus angustifolia Vahl – narrow-leafed ash Fraxinus angustifolia subsp, oxycarpa – Caucasian ash Claret ash or raywood ash Fraxinus angustifolia subsp. – European ash Fraxinus pallisiae Wilmott – Pallis ash Fraxinus sogdiana Bge Section Ornus Fraxinus griffithii C. B. Clarke – Griffiths ash Fraxinus micrantha Lingelsh, – Chinese ash or Korean ash Fraxinus japonica – Japanese ash Fraxinus longicuspis Fraxinus floribunda Wall. – Himalayan manna ash Fraxinus ornus L. – manna ash or flowering ash Fraxinus bungeana DC, – Bunges ash Fraxinus paxiana Lingelsh. The emerald ash borer is a wood-boring beetle accidentally introduced to North America from eastern Asia via solid wood packing material in the late 1980s to early 1990s and it has killed tens of millions of trees in 15 states in the United States and adjacent Ontario in Canada. It threatens some seven billion ash trees in North America, the public is being cautioned not to transport unfinished wood products, such as firewood, to slow the spread of this insect pest. The disease has infected about 90% of Denmarks ash trees, in 2016, the ash tree was reported as in danger of extinction in Europe
38.
Reinier de Graaf
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Regnier de Graaf, original Dutch spelling Reinier de Graaf, or Latinized Reijnerus de Graeff was a Dutch physician and anatomist who made key discoveries in reproductive biology. His first name is often spelled Reinier or Reynier, De Graaf was born in Schoonhoven and perhaps a relative to the De Graeff regent family. He studied medicine in Utrecht and Leiden, there his co-students were Jan Swammerdam, Niels Stensen and Frederik Ruysch, one of their professors was Franciscus Sylvius. He submitted his thesis on the pancreas, and went to France where he obtained his medical degree from the University of Angers. While in Paris, he turned to the study of the male genitalia. Back in the Netherlands in 1667, De Graaf established himself in Delft, since he was a Catholic in a mainly Protestant country, he was unable to follow a university career. After the early death of a son, De Graaf died in 1673 at age 32 and was buried in the Oude Kerk in Delft, the reason for his death is unknown. He was, however, affected by his controversy with Swammerdam and it has been speculated that he may have committed suicide. His friend Antonie van Leeuwenhoek in his writings attributed his death to choleric substances, De Graaf also invented a practical syringe, described in his third treatise. His eponymous legacy are the Graafian follicles and he himself pointed out that he was not the first to describe them, but described their development. From the observation of pregnancy in rabbits, he concluded that the contained the oocyte. The mature stage of the follicle is called the Graafian follicle in his honour, although others. The discovery of the egg was eventually made by Karl Ernst von Baer in 1827. De Graaf issued a rebuttal but was affected by the accusation, further, De Graaf described the anatomy of the testicles and collected secretions of the gall bladder and the pancreas. Despite his contributions, De Graaf made a number of errors in addition to believing that the ovum was the follicle and he never actually consulted the ancient texts but merely repeated the accounts of others compounding their inaccuracies. Because he observed rabbits rather than humans, he assumed fertilisation took place in the ovary and he believed that the seminal vesicles stored spermatozoa. He was not yet aware of the presence of spematozaoa as such, De Graaf, R De Virorum Organis Generationi Inservientibus, de Clysteribus et de Usu Siphonis in Anatomia De Graaf, R. De Mulierum Organis Generationi Inservientibus. De Graaf, R Alle de Wercken, Reinier De Graaf and his contribution to reproductive biology
39.
Philosophical Transactions of the Royal Society
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Philosophical Transactions, titled Philosophical Transactions of the Royal Society from 1776, is a scientific journal published by the Royal Society. In its earliest days, it was a venture of the Royal Societys secretary. It became an official society publication in 1752 and it was established in 1665, making it the first journal in the world exclusively devoted to science, and therefore also the worlds longest-running scientific journal. The use of the word Philosophical in the title refers to natural philosophy, in 1887 the journal expanded and divided into two separate publications, one serving the physical sciences and the other focusing on the life sciences. Both journals now publish themed issues and issues resulting from papers presented at the Discussion Meetings of the Royal Society, primary research articles are published in the sister journals Proceedings of the Royal Society, Biology Letters, Journal of the Royal Society Interface, and Interface Focus. The first issue, published in London on 6 March 1665, was edited and published by the Societys first secretary, Henry Oldenburg, four-and-a-half years after the Royal Society was founded. Oldenburg published the journal at his own expense and seems to have entered into an agreement with the societys council allowing him to keep any resulting profits. He was to be disappointed, however, since the journal performed poorly from a point of view during his lifetime. Oldenburg put out 136 issues of the Transactions before his death in 1677, the familiar functions of the scientific journal – registration, certification, dissemination and archiving − were introduced at inception by Philosophical Transactions. The printed journal replaced much of Oldenburgs letter-writing to correspondents, at least on scientific matters, Oldenburg also described his journal as one of these philosophical commonplace books, indicating his intention to produce a collective notebook between scientists. The final article of the issue concerned The Character, Lately Published beyond the Seas, of an Eminent Person, not Long Since Dead at Tholouse, the eminent person recently deceased was Pierre de Fermat, although the issue failed to mention his last theorem. In the aftermath of the Interregnum, the potential for censorship was very real, by reporting ongoing and often unfinished scientific work that may otherwise have not been reported, the journal had a central function of being a scientific news service. Foundation, print was heavily regulated, and there was no such thing as a free press, in fact, the first English newspaper, The London Gazette, did not appear until after Phil. Oldenburgs compulsive letter writing to foreign correspondents led to him being suspected of being a spy for the Dutch, a rival took the opportunity to publish a pirate issue of Philosophical Transactions, with the pretense of it being Issue 27. Oldenburg repudiated the issue by publishing the real 27 upon his release, upon Oldenburgs death, following a brief hiatus, the position of Editor was passed down through successive secretaries of the Society as an unofficial responsibility and at their own expense. Robert Hooke changed the name of the journal to Philosophical Collections in 1679 – a name that remained until 1682, the position of editor was sometimes held jointly and included William Musgrave and Robert Plot. By the mid-eighteenth century, the most notable editors, besides Oldenburg, were Hans Sloane, James Jurin, in virtually all cases the journal was edited by the serving secretary of the society. These editor-secretaries carried the burden of publishing the Philosophical Transactions
40.
Henry Oldenburg
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Henry Oldenburg was a German theologian known as a diplomat, a natural philosopher and as the creator of scientific peer review. He was one of the foremost intelligencers of Europe of the century, with a network of correspondents to rival those of Fabri de Peiresc, Marin Mersenne. At the foundation of the Royal Society he took on the task of foreign correspondence, born in Bremen, Germany, he trained in theology and received his degree on 2 November 1639. His movements during the 1640s are unclear, but he is thought to have worked as a tutor in England for much of the decade, in 1648 he left England and travelled, returning in the end to Bremen. He went to London in 1653, as a diplomat, and he forged a strong relationship with his lifelong patron Robert Boyle, and was tutor to Boyles nephew, the politician Richard Jones. Oldenburg married his wife, Dora Katherina Dury, the daughter of John Dury. Among Oldenburgs correspondents at this time was Baruch Spinoza, whom he was introduced to on a trip to the Netherlands and he also became the founding editor of the Philosophical Transactions of the Royal Society. Oldenburg began the practice of sending submitted manuscripts to experts who could judge their quality before publication and this was the beginning of both the modern scientific journal and the practice of peer review. Philosophical Transactions of the Royal Society continues today and is the longest running scientific journal in the world and he was briefly imprisoned in the Tower as a suspected spy in 1667, during the Second Anglo-Dutch War. Oldenburgs correspondence was linked to support from the politician Sir Joseph Williamson, Oldenburg enjoyed good health in his lifetime, but he fell seriously ill on 3 September 1677, and he died two days thereafter at his Pall Mall, London home. He was interred on 7 September at St Mary the Virgin and his widow died ten days later. Adrien Auzout, Henri Justel, Pierre Petit, Ismaël Bullialdus, Sir William Curtius, Johann Hevelius, Gottfried Leibniz, Philipp Jacob Sachs von Lewenheimb, Johann Daniel Major, Ehrenfried Walther von Tschirnhaus, Martin Vogel. Paolo Boccone, Giovanni Domenico Cassini, Marcello Malpighi, reinier de Graaf, Christiaan Huygens and his father, Constantijn Huygens, Antoni van Leeuwenhoek, Willem Ten Rhijne, Benedictus/Baruch Spinoza, Peter Serrarius, Jan Swammerdam, Isaac Vossius
41.
William Croone
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William Croone was an English physician and one of the original Fellows of the Royal Society. He was born in London on 15 September 1633, and admitted to Merchant Taylors School on 11 December 1642 and he was admitted on 13 May 1647 a pensioner of Emmanuel College, Cambridge, graduating B. A. in 1651, and M. A. in 1654. After taking his first degree in arts, he was elected to a fellowship, in 1659 he was chosen Gresham Professor of Rhetoric in London, and while holding that office he promoted the institution of the Royal Society, the members of which assembled there. On 7 October 1662 he was created doctor of medicine at Cambridge by royal mandate and he was chosen one of the first fellows of the Royal Society on 20 May 1663, after the grant of their charter, and he frequently sat upon the council. On 25 June the same year he was admitted a candidate of the College of Physicians, in 1665 he visited France, where he became acquainted with several learned and eminent men. The Company of Surgeons appointed him, on 28 August 1670, their anatomy lecturer on the muscles, in succession to Sir Charles Scarborough, soon after his appointment to it he resigned his professorship at Gresham College. On 29 July 1675, after having waited twelve years for a vacancy and he acquired an extensive and lucrative practice in the latter part of his life. He died on 12 October 1684, and was buried in St Mildred and his funeral sermon was preached by John Scott, D. D. canon of Windsor, and published. Lady Sadleir also, out of regard for the memory of her first husband and he married Mary, daughter of Alderman John Lorymer of London. She afterwards became the wife of Sir Edwin Sadleir, bart. of Temple Dinsley, Hertfordshire, attribution This article incorporates text from a publication now in the public domain, Croone, William
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listen); 24 October 1632 – 26 August 1723) was a Dutch businessman and scientist in the Golden Age of Dutch science and technology. A largely self-taught man in science, he is commonly known as "the Father of Microbiology", and one of the first microscopists and microbiologists.[5][6] Van Leeuwenhoek is best known for his pioneering work in microscopy and for his contributions toward the establishment of microbiology as a scientific discipline._(19122164704).jpg)
