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gases. He also pre- sented a hypothesis regarding Abiogenic Petrole- um Origin, and predicted the possibility of ex- tracting many important chemical compounds out of petroleum. Dmitri also made his mark [...] Mendeleev devoted a great part of his life to the study of solutions, catalysis, and petroleum. He also wrote many works, including Principles of Chemistry. Dmitri Mendeleev was born on February 8, 1834 [...] Alcohol” and became a professor of chemistry at the University in Saint Petersburg. During this time he also wrote a com- prehensive textbook on organic chemistry. As a professor, Mendeleev was highly respected
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some proper- ties of the principle of Earth, and can be transformed in a gaseous state, thus carries also some principles of Air (see e.g. Priesner 2011). Elementary property Cold Heat Dry Earth Fire Moist [...] century and were only omit- ted when the concept of energy became more and more established. 1 See also http://www.chemheritage.org/discover/online- resources/chemistry-in-history/themes/early-chemistry- [...] there were always three elements. Moreover, these elements did not just react similarly, but they had also some fundamental connections: Most notably, calci- um, strontium, and barium did not just show a similar
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again from these two gases. This was also remarkable as water – like air – had been considered as being a chemical element. And one of the gases that formed water was also part of the air, a gas that Lavoisier [...] chemist in his forties. He had been a member of the Paris Academy of Sciences since the late 1760s, and also one of the tax collectors for the French King – a position that was the basis of his wealth. His wife [...] than Antoine, a beautiful and very bright person who was not only interested in the Sciences, but also good in languages (she actually translated English publications for her husband). Moreover, she hosted
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Hydrogen react with 16g Oxygen, the same amount would also react with 32g Sulphur. 56g of Iron would also react with 16g Oxygen, the same amount would also react with 32g Sul- phur. Moreover, there were two [...] Mathematics and Natural Philosophy in the New Col- lege of Manchester. Shortly after his appointment, he also had become a member to the Manchester Literary and Philosophical Society, one of the eminent English [...] to lecture, actually he had already begun to teach at the age of twelve in a local school. But he also loved science, and his new position offered him the opportunity to combine both his passions. In
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of chemical composition, and formulating the laws of partial pressures and multiple proportions. He also carried out numerous tests on gas absorption in liquids and thermal expansion of gases, and de- scribed [...] tense and often felt uncom- fortable. He never succeeded as a lecturer because he lacked charisma. He also never married, claim- ing that he could not afford to have a wife. Dalton had a great interest in [...] on Earth and observed that atmospheric composition is the same regardless of the location. Dalton also proved that the atmosphere is not a chemical compound, but instead is a composition of various gases
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vitamin.” Funk also illustrated the method and the amount of the beriberi vitamin that could be precipitated from an aqueous solution, as well as the chemical formula for the vitamin. g He also gave an il [...] Munich’s beggars in the recently founded militärisches Arbeitshaus (mili- tary workhouse). His plan also tackled the beggar prob- lem by educating the beggars and encouraging them to become independent and [...] usually weighed in powdered form) had a greater weight than the origi- nal piece of metal. Lavoisier also found that the process could be reversed, that is, when the calx was reduced to the metal by heating
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new field of medicine called bacteriology. He worked in Josef Forster's laboratory in Amsterdam and also in Robert Koch's bacteriological laboratory in Berlin, where he stayed for one year. Our story begins
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his military career. Along with this work, he also became the director of the Javanese Medical School, where he taught physiology and organic chemistry. He also remarried in 1888. With his wife Bertha Julie [...] vitamin.” Funk also illustrated the method and the amount of the beriberi vitamin that could be precipitated from an aqueous solution, as well as the chemical formula for the vitamin. g He also gave an il [...] Using the findings of Eijkman’s study, scientists were able to isolate a nutrient called thiamin, also known as vitamin B1. Eijkman had, through his research, formed the basis for understanding the role
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fellow of the Royal College of Physicians (Edinburgh) and seven years later became its treasurer. He also became a member of the Philosophical and Medical Society of Edinburgh. But his important scientific [...] that the water obtained from a vapour of heated sea water was fresh and was suitable for drinking. He also proposed the use of solar energy for water distillation. Unfortunately, the technology at that time
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vitamin.” Funk also illustrated the method and the amount of the beriberi vitamin that could be precipitated from an aqueous solution, as well as the chemical formula for the vitamin. g He also gave an il [...] fellow of the Royal College of Physicians (Edinburgh) and seven years later became its treasurer. He also became a member of the Philosophical and Medical Society of Edinburgh. But his important scientific [...] that the water obtained from a vapour of heated sea water was fresh and was suitable for drinking. He also proposed the use of solar energy for water distillation. Unfortunately, the technology at that time