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Sigismund Friedrich Hermbstädt
Sigismund Friedrich Hermbstädt (16 April 1760, Erfurt – 22 October 1833, Berlin) was a German pharmacist and chemist who wielded great influence on the improvement of science education for pharmacists. He also made numerous contributions in the fields of industrial and agricultural chemistry. Biography He studied medicine and pharmacy at the University of Erfurt, and following graduation, worked as an assistant in the pharmacy of Johann Christian Wiegleb in Langensalza. In 1786 he undertook a study trip to the Harz Mountains and the Erzgebirge, followed by visits to Göttingen, Halle, Leipzig and Freiberg, and in the process, made the acquaintance of several eminent scientists. In 1787 he moved to Berlin, where he conducted private lectures on chemistry, physics, technology and pharmacy. In 1781 he was appointed professor of chemistry and pharmacy at the ''Collegium Medico-chirurgicum'' in Berlin. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sigismund Friedrich Hermbstädt
Sigismund Friedrich Hermbstädt (16 April 1760, Erfurt – 22 October 1833, Berlin) was a German pharmacist and chemist who wielded great influence on the improvement of science education for pharmacists. He also made numerous contributions in the fields of industrial and agricultural chemistry. Biography He studied medicine and pharmacy at the University of Erfurt, and following graduation, worked as an assistant in the pharmacy of Johann Christian Wiegleb in Langensalza. In 1786 he undertook a study trip to the Harz Mountains and the Erzgebirge, followed by visits to Göttingen, Halle, Leipzig and Freiberg, and in the process, made the acquaintance of several eminent scientists. In 1787 he moved to Berlin, where he conducted private lectures on chemistry, physics, technology and pharmacy. In 1781 he was appointed professor of chemistry and pharmacy at the ''Collegium Medico-chirurgicum'' in Berlin. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prussian Academy Of Sciences
The Royal Prussian Academy of Sciences (german: Königlich-Preußische Akademie der Wissenschaften) was an academy established in Berlin, Germany on 11 July 1700, four years after the Prussian Academy of Arts, or "Arts Academy," to which "Berlin Academy" may also refer. In the 18th century, it was a French-language institution since French was the language of science and culture during that era. Origins Prince-elector Frederick III of Brandenburg, Germany founded the Academy under the name of ''Kurfürstlich Brandenburgische Societät der Wissenschaften'' ("Electoral Brandenburg Society of Sciences") upon the advice of Gottfried Wilhelm Leibniz, who was appointed president. Unlike other Academies, the Prussian Academy was not directly funded out of the state treasury. Frederick granted it the monopoly on producing and selling calendars in Brandenburg, a suggestion from Leibniz. As Frederick was crowned "King in Prussia" in 1701, creating the Kingdom of Prussia, the Academy was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agronomist
An agriculturist, agriculturalist, agrologist, or agronomist (abbreviated as agr.), is a professional in the science, practice, and management of agriculture and agribusiness. It is a regulated profession in Canada, India, the Philippines, the United States, and the European Union. Other names used to designate the profession include agricultural scientist, agricultural manager, agricultural planner, agriculture researcher, or agriculture policy maker. The primary role of agriculturists are in leading agricultural projects and programs, usually in agri business planning or research for the benefit of farms, food, and agribusiness related organizations. Agriculturists usually are designated in the government as public agriculturists serving as agriculture policy makers or technical advisors for policy making. Agriculturists can also provide technical advice for farmers and farm workers such as in making crop calendars and work flows to optimize farm production, tracing agric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cameralism
Cameralism (German: ''Kameralismus'') was a German science of public administration in the 18th and early 19th centuries that aimed at strong management of a centralized economy for the benefit mainly of the state. The discipline in its most narrow definition concerned the management of the state's finances. Throughout the 18th and the first half of the 19th century, cameralism was influential in Northern European states for example, in Prussia and Sweden and its academics and practitioners were pioneers in economic, environmental, and administrative knowledge and technology; for example, cameralist accounting, still used in public finance today. The growing power of centralized state control necessitated centralized systematic information on the nation. A major renovation was the collection, use and interpretation of numerical and statistical data, ranging from trade statistics, harvest reports, and death notices to population censuses. Starting in the 1760s, officials in Fra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phlogistin
The phlogiston theory is a superseded scientific theory that postulated the existence of a fire-like element called phlogiston () contained within combustible bodies and released during combustion. The name comes from the Ancient Greek (''burning up''), from (''flame''). The idea was first proposed in 1667 by Johann Joachim Becher and later put together more formally by Georg Ernst Stahl. Phlogiston theory attempted to explain chemical processes such as combustion and rusting, now collectively known as oxidation. It was challenged by the concomitant weight increase, and was abandoned before the end of the 18th century following experiments by Antoine Lavoisier and others. Phlogiston theory led to experiments which ultimately concluded with the discovery of oxygen. Theory Phlogiston theory states that ''phlogisticated'' substances contain phlogiston and that they ''dephlogisticate'' when burned, releasing stored phlogiston which is absorbed by the air. Growing plants then ab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antoine Laurent Lavoisier
Antoine-Laurent de Lavoisier ( , ; ; 26 August 17438 May 1794), CNRS () also Antoine Lavoisier after the , was a and who was central to the 18th-century |
Hemp
Hemp, or industrial hemp, is a botanical class of ''Cannabis sativa'' cultivars grown specifically for industrial or medicinal use. It can be used to make a wide range of products. Along with bamboo, hemp is among the fastest growing plants on Earth. It was also one of the first plants to be spun into usable fiber 50,000 years ago. It can be refined into a variety of commercial items, including paper, rope, textiles, clothing, biodegradable plastics, paint, insulation, biofuel, food, and animal feed. Although chemotype I cannabis and hemp (types II, III, IV, V) are both ''Cannabis sativa'' and contain the psychoactive component tetrahydrocannabinol (THC), they represent distinct cultivar groups, typically with unique phytochemical compositions and uses. Hemp typically has lower concentrations of total THC and may have higher concentrations of cannabidiol (CBD), which potentially mitigates the psychoactive effects of THC. The legality of hemp varies widely among countrie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flax
Flax, also known as common flax or linseed, is a flowering plant, ''Linum usitatissimum'', in the family Linaceae. It is cultivated as a food and fiber crop in regions of the world with temperate climates. Textiles made from flax are known in Western countries as linen and are traditionally used for bed sheets, underclothes, and table linen. Its oil is known as linseed oil. In addition to referring to the plant, the word "flax" may refer to the unspun fibers of the flax plant. The plant species is known only as a cultivated plant and appears to have been domesticated just once from the wild species ''Linum bienne'', called pale flax. The plants called "flax" in New Zealand are, by contrast, members of the genus ''Phormium''. Description Several other species in the genus ''Linum'' are similar in appearance to ''L. usitatissimum'', cultivated flax, including some that have similar blue flowers, and others with white, yellow, or red flowers. Some of these are perennial pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tobacco
Tobacco is the common name of several plants in the genus '' Nicotiana'' of the family Solanaceae, and the general term for any product prepared from the cured leaves of these plants. More than 70 species of tobacco are known, but the chief commercial crop is ''N. tabacum''. The more potent variant ''N. rustica'' is also used in some countries. Dried tobacco leaves are mainly used for smoking in cigarettes and cigars, as well as pipes and shishas. They can also be consumed as snuff, chewing tobacco, dipping tobacco, and snus. Tobacco contains the highly addictive stimulant alkaloid nicotine as well as harmala alkaloids. Tobacco use is a cause or risk factor for many deadly diseases, especially those affecting the heart, liver, and lungs, as well as many cancers. In 2008, the World Health Organization named tobacco use as the world's single greatest preventable cause of death. Etymology The English word ''tobacco'' originates from the Spanish word "tabaco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beer Brewing
Brewing is the production of beer by steeping a starch source (commonly cereal grains, the most popular of which is barley) in water and fermenting the resulting sweet liquid with yeast. It may be done in a brewery by a commercial brewer, at home by a homebrewer, or communally. Brewing has taken place since around the 6th millennium BC, and archaeological evidence suggests that emerging civilizations, including ancient Egypt and Mesopotamia, brewed beer. Since the nineteenth century the brewing industry has been part of most western economies. The basic ingredients of beer are water and a fermentable starch source such as malted barley. Most beer is fermented with a brewer's yeast and flavoured with hops. Less widely used starch sources include millet, sorghum and cassava. Secondary sources ( adjuncts), such as maize (corn), rice, or sugar, may also be used, sometimes to reduce cost, or to add a feature, such as adding wheat to aid in retaining the foamy head of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hard Soap
Hard soap or curd soap is a kind of soap. Examples are Nablus soap, Aleppo soap, Castile soap, and Marseille soap or ''savon de Marseille''. During the preparation of the soap, common salt ( sodium chloride) is added to the liquid soap mass. This leads to the soap mass separating from glycerin Glycerol (), also called glycerine in British English and glycerin in American English, is a simple triol compound. It is a colorless, odorless, viscous liquid that is sweet-tasting and non-toxic. The glycerol backbone is found in lipids known ..., resulting in a harder soap. It can be made using sodium hydroxide. Merriam-Webster Dictionary References {{Reflist[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sugar Beet
A sugar beet is a plant whose root contains a high concentration of sucrose and which is grown commercially for sugar production. In plant breeding, it is known as the Altissima cultivar group of the common beet (''Beta vulgaris''). Together with other beet cultivars, such as beetroot and chard, it belongs to the subspecies ''Beta vulgaris'' subsp. ''vulgaris.'' Its closest wild relative is the sea beet (''Beta vulgaris'' subsp. ''maritima''). Sugar beets are grown in climates that are too cold for sugar cane. The low sugar content of the beets makes growing them a marginal proposition unless prices are relatively high. In 2020, Russia, the United States, Germany, France and Turkey were the world's five largest sugar beet producers. In 2010–2011, Europe, and North America except Arctic territories failed to supply the overall domestic demand for sugar and were all net importers of sugar. The US harvested of sugar beets in 2008. In 2009, sugar beets accounted for 20% of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
