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Léon-Albert Arnaud
Léon-Albert Arnaud (15 February 1853 – 27 March 1915) was a French chemist born in Paris. From 1872 he worked as an assistant in the laboratory of Michel Eugène Chevreul (1786–1889) at the ''Muséum national d'histoire naturelle''. In 1883 he succeeded F.S. Cloez, François Stanislas Cloez (1817–1883) as ''aide-naturaliste'', and from 1890 to 1915 was chair of applied organic chemistry at the museum. Arnaud was the first scientist to describe the chemical make-up of tariric acid, an extraction from the glucoside of the "Picramnia, tariri plant" found in Guatemala. He is also credited with isolating tanghinine, taken from ''Cerbera manghas, Tanghinia venenifera''; (Family (biology), family Apocynaceae), and in 1883 discovered a new alkaloid called cinchonamine. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1886 - Albert Arnaud By Nadar
Events January * January 1 – Upper Burma is formally annexed to British rule in Burma, British Burma, following its conquest in the Third Anglo-Burmese War of November 1885. * January 5–January 9, 9 – Robert Louis Stevenson's novella ''Strange Case of Dr Jekyll and Mr Hyde'' is published in New York and London. * January 16 – A resolution is passed in the German Parliament to condemn the Prussian deportations, the politically motivated mass expulsion of ethnic Poles and Jews from Prussia, initiated by Otto von Bismarck. * January 18 – Modern field hockey is born with the formation of The Hockey Association in England. * January 29 – Karl Benz patents the first successful gasoline-driven automobile, the Benz Patent-Motorwagen (built in 1885). February * February 6–February 9, 9 – Seattle riot of 1886: Anti-Chinese sentiments result in riots in Seattle, Washington. * February 8 – The West End Riots following a popular meetin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cerbera Manghas
''Cerbera manghas'' (formerly ''Cerbera tanghin''), commonly known as the sea mango, tangena or bintaro is a small evergreen coastal tree growing up to tall. It is native to coastal areas in Africa, Asia, Australasia, and the Pacific islands. It is classified as one of the three species in the genus Cerbera that constitute mangroves. Despite its name, it is not closely related to the mango (''Mangifera indica''). Description The shiny dark-green leaves grow in a spiral arrangement, and are ovoid in shape. The flowers are fragrant, possessing a white tubular five-lobed corolla about in diameter, with a pink to red throat. They have five stamens and the ovary is positioned above the other flower parts. The fruits are egg-shaped, long. At maturity they turn bright red. Toxicity The leaves and the fruits contain the extremely toxic cardiac glycoside cerberin, as well as tanghinin, deactyltanghin, and neriifolin. Only the mechanism of action for cerberin has been extensively s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1915 Deaths
Events Below, the events of World War I have the "WWI" prefix. January *January – British physicist Sir Joseph Larmor publishes his observations on "The Influence of Local Atmospheric Cooling on Astronomical Refraction". *January 1 ** WWI: British Royal Navy battleship HMS Formidable (1898), HMS ''Formidable'' is sunk off Lyme Regis, Dorset, England, by an Imperial German Navy U-boat, with the loss of 547 crew. **WWI: Battle of Broken Hill: A train ambush near Broken Hill, Australia, is carried out by two men (claiming to be in support of the Ottoman Empire) who are killed, together with four civilians. * January 5 – Joseph E. Carberry sets an altitude record of , carrying Capt. Benjamin Delahauf Foulois as a passenger, in a fixed-wing aircraft. * January 12 ** The United States House of Representatives rejects a proposal to give women the right to vote. ** ''A Fool There Was (1915 film), A Fool There Was'' premières in the United States, starring Theda Bara as a '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1853 Births
Events January–March * January 6 – ** Florida Governor Thomas Brown signs legislation that provides public support for the new East Florida Seminary, leading to the establishment of the University of Florida. **U.S. President-elect Franklin Pierce's only living child, Benjamin "Benny" Pierce, is killed in a train accident. * January 8 – Taiping Rebellion: Zeng Guofan is ordered to assist the governor of Hunan in organizing a militia force to search for local bandits. * January 12 – Taiping Rebellion: The Taiping army occupies Wuchang. * January 19 – Giuseppe Verdi's opera '' Il Trovatore'' premieres in performance at Teatro Apollo in Rome. * February 10 – Taiping Rebellion: Taiping forces assemble at Hanyang, Hankou, and Wuchang, for the march on Nanjing. * February 12 – The city of Puerto Montt is founded in the Reloncaví Sound, Chile. * February 22 – Washington University in St. Louis is founded as Eliot Seminary. * March 5 – Saint Paul Fire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientists From Paris
A scientist is a person who researches to advance knowledge in an area of the natural sciences. In classical antiquity, there was no real ancient analog of a modern scientist. Instead, philosophers engaged in the philosophical study of nature called natural philosophy, a precursor of natural science. Though Thales ( 624–545 BC) was arguably the first scientist for describing how cosmic events may be seen as natural, not necessarily caused by gods,Frank N. Magill''The Ancient World: Dictionary of World Biography'', Volume 1 Routledge, 2003 it was not until the 19th century that the term ''scientist'' came into regular use after it was coined by the theologian, philosopher, and historian of science William Whewell in 1833. History The roles of "scientists", and their predecessors before the emergence of modern scientific disciplines, have evolved considerably over time. Scientists of different eras (and before them, natural philosophers, mathematici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
19th-century French Chemists
The 19th century began on 1 January 1801 (represented by the Roman numerals MDCCCI), and ended on 31 December 1900 (MCM). It was the 9th century of the 2nd millennium. It was characterized by vast social upheaval. Slavery was Abolitionism, abolished in much of Europe and the Americas. The First Industrial Revolution, though it began in the late 18th century, expanded beyond its British homeland for the first time during the 19th century, particularly remaking the economies and societies of the Low Countries, France, the Rhineland, Northern Italy, and the Northeastern United States. A few decades later, the Second Industrial Revolution led to ever more massive urbanization and much higher levels of productivity, profit, and prosperity, a pattern that continued into the 20th century. The Catholic Church, in response to the growing influence and power of modernism, secularism and materialism, formed the First Vatican Council in the late 19th century to deal with such problems an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkaloid
Alkaloids are a broad class of natural product, naturally occurring organic compounds that contain at least one nitrogen atom. Some synthetic compounds of similar structure may also be termed alkaloids. Alkaloids are produced by a large variety of organisms including bacteria, fungus, fungi, Medicinal plant, plants, and animals. They can be purified from crude extracts of these organisms by acid-base extraction, or solvent extractions followed by silica-gel column chromatography. Alkaloids have a wide range of pharmacology, pharmacological activities including antimalarial medication, antimalarial (e.g. quinine), asthma, antiasthma (e.g. ephedrine), chemotherapy, anticancer (e.g. omacetaxine mepesuccinate, homoharringtonine), cholinomimetic (e.g. galantamine), vasodilation, vasodilatory (e.g. vincamine), Antiarrhythmic agent, antiarrhythmic (e.g. quinidine), analgesic (e.g. morphine), antibacterial (e.g. chelerythrine), and anti-diabetic, antihyperglycemic activities (e.g. berb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apocynaceae
Apocynaceae (, from '' Apocynum'', Greek for "dog-away") is a family of flowering plants that includes trees, shrubs, herbs, stem succulents, and vines, commonly known as the dogbane family, because some taxa were used as dog poison. Notable members of the family include oleander, dogbanes, milkweeds, and periwinkles. The family is native to the European, Asian, African, Australian, and American tropics or subtropics, with some temperate members as well. The former family Asclepiadaceae (now known as Asclepiadoideae) is considered a subfamily of Apocynaceae and contains 348 genera. A list of Apocynaceae genera may be found here. Many species are tall trees found in tropical forests, but some grow in tropical dry ( xeric) environments. Also perennial herbs from temperate zones occur. Many of these plants have milky latex, and many species are poisonous if ingested, the family being rich in genera containing alkaloids and cardiac glycosides, those containing the latter oft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of The Chemical Society
The ''Journal of the Chemical Society'' was a scientific journal established by the Chemical Society in 1849 as the ''Quarterly Journal of the Chemical Society''. The first editor was Edmund Ronalds. The journal underwent several renamings, splits, and mergers throughout its history. In 1980, the Chemical Society merged with several other organizations into the Royal Society of Chemistry. The journal's continuity is found in '' Chemical Communications'', '' Dalton Transactions'', '' Faraday Transactions'', and '' Perkin Transactions'', all of which are published by the Royal Society of Chemistry. History ;'' Proceedings of the Chemical Society'' * ''Memoirs of the Chemical Society of London'' (1841) * ''Proceedings of the Chemical Society of London'' (1842–1843) * ''Memoirs and Proceedings of the Chemical Society'' (1843–1848) * ''Proceedings of the Chemical Society, London'' (1885–1914) * Published as a supplement to ''Journal of the Chemical Society'' from 1914 to 1956 * ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemist
A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a graduated scientist trained in the study of chemistry, or an officially enrolled student in the field. Chemists study the composition of matter and its properties. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms. Chemists carefully measure substance proportions, chemical reaction rates, and other chemical properties. In Commonwealth English, pharmacists are often called chemists. Chemists use their knowledge to learn the composition and properties of unfamiliar substances, as well as to reproduce and synthesize large quantities of useful naturally occurring substances and create new artificial substances and useful processes. Chemists may specialize in any number of Chemistry#Subdisciplines, subdisciplines of chemistry. Materials science, Materials scientists and metallurgists sha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
