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Theodore Alvin Hall was an American physicist and an atomic spy for the Soviet Union, who, during his work on United States efforts to develop the first and second atomic bombs during World War II, gave a detailed description of the "Fat Man" plutonium bomb, and of several processes for purifying plutonium, to Soviet intelligence. His brother, Edward N. Hall, was a rocket scientist who led the US Air Force's program to develop an intercontinental ballistic missile, personally designing the Minuteman missile and convincing the Pentagon and President Eisenhower to adopt it as a key part of the nation's strategic nuclear triad.
Thiourea is an organosulfur compound with the formula SC(NH2)2 and the structure H2N−C(=S)−NH2. It is structurally similar to urea, except that the oxygen atom is replaced by a sulfur atom ; however, the properties of urea and thiourea differ significantly.
Sergey Nikolaevich Kurnakov or Sergei N. Kournakoff was a former tsarist cavalry officer who had immigrated to the U.S. and later became an ardent ideological Communist.
The Nemastomatidae are a family of harvestmen with about 170 described species in 16 recent genera. Several fossil species and genera are known.
John Frank Davidson FRS FREng FIChemE was a British chemical engineer and former Shell Professor of Chemical Engineering at the University of Cambridge. He is regarded as the founding father of the subject of Fluidization in Chemical Engineering.
Pterostichus is a very large genus of ground beetles with a Holarctic distribution in the subfamily Harpalinae. It has over 1,200 species. The beetles are predatory, but sometimes feed on strawberries. They can be found under rocks and prefer slightly moist, sandy soil although preferences differ between species.
The Kurnakov test, also known as Kurnakov's reaction, is a chemical test that distinguishes pairs of cis- and trans-isomers of [PtA2X2] (A = NH3, X = halogen or pseudohalide). Upon treatment with thiourea, the trans-dihalides give less soluble white products, whereas the cis-dihalides give more soluble yellow products. The test is still used to assay samples of the drug cisplatin, but it is mainly of pedagogical interest, as it illustrates the trans effect.
Nikolai Semyonovich Kurnakov was a Russian chemist, who is internationally recognized as the originator of physicochemical analysis. He also was one of the principal founders of the platinum industry in the Soviet Union. A chemical reaction that he pioneered, known as the Kurnakov test, is still used to differentiate cis from trans isomers of divalent platinum and is his best-known contribution to coordination chemistry.
Kurnakov or Kurnakova is a Russian surname. Notable people with the surname include:
Lindrothius is a genus of beetles in the family Carabidae, containing the following species:
Chinapenetretus is a genus of ground beetles in the family Carabidae. There are about nine described species in Chinapenetretus, found in China.
Deltomerus is a genus of ground beetles in the family Carabidae. There are more than 70 described species in Deltomerus.
Parapenetretus is a genus of ground beetles in the family Carabidae. There are at least 20 described species in Parapenetretus, found mainly in China.
Platidiolus is a genus of ground beetles in the family Carabidae. There are about five described species in Platidiolus.
Inotrechus is a genus of beetles in the family Carabidae, containing the following species:
Meganophthalmus is a genus of beetles in the family Carabidae, containing the following species:
Troglocimmerites is a genus of beetles in the family Carabidae, containing the following species:
Patrobinae is a subfamily of ground beetles in the family Carabidae. There are more than 20 genera and 240 described species in Patrobinae.
Trechini is a large tribe of ground beetles in the family Carabidae. There are more than 270 genera and over 2,400 described species in Trechini, found throughout the world.
References
- ↑ "Jeannelius Kurnakov, 1959". Catalogue of Life. Retrieved 2023-04-09.
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