منابع مشابه
Clair C. Patterson (1922-1995), discoverer of the age of the Earth.
geochemistry. In his famous paper entitled “Age of meteorites and the Earth” (Geochimica et Cosmochimica Acta, 1956, vol. 10, pp. 230–237), he provided the first reliable ages of the Earth and meteorites: about 4,550 million years. He reached this conclusion by utilizing elegant microchemical and precise mass spectrometric techniques for the analysis of the isotopic compositions and concentrati...
متن کاملPaul Patterson: In Memoriam
Caltech neuroscientist Paul Patterson, whose career spanned developmental neurobiology, behavioral neuroscience, and neuroimmunology, passed away on June 25 at the age of 70 from an aggressive brain tumor. Patterson was a pioneer and an iconoclast who was not afraid to work outside of the scientific mainstream; consequently, he made a number of important and seminal contributions that opened up...
متن کاملReclassification of the Genus Chitinotylenchus (Micoletzky, 1922) and a Redescription of C. paragracilis (Micoletzky, 1922) (Nematoda: Tylenchoidea).
The holotype of Chitinotylenchus paragracilis (Micoletzky, 1922) is redescribed and illustrated. Chitinotylenchus is proposed as a synonym of Ditylenchus Filipjev, 1936 and C. paragracilis as Ditylenchus paragracilis (Micoletzky, 1922) new comb. The four other species in the genus Chitinotylenchus are considered species inquirendae.
متن کاملPatterson-Wiedemann construction revisited
In 1983, Patterson and Wiedemann constructed Boolean functions on n = 15 input variables having nonlinearity strictly greater than 2n−1−2 n−1 2 . Construction of Boolean functions on odd number of variables with such high nonlinearity was not known earlier and also till date no other construction method of such functions are known. We note that the PattersonWiedemann construction can be underst...
متن کاملStanley Cohen (1922- )
Stanley Cohen [5] was born on 17 November 1922 in Brooklyn, New York. His father was a tailor and his mother a housewife who immigrated to the United States from Russia in the early 1900s. Cohen spent his early education in the New York City public school system, and attended the city college, Brooklyn College [9], for his undergraduate studies. Brooklyn College [9] had no tuition, which allowe...
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ژورنال
عنوان ژورنال: Nature
سال: 1996
ISSN: 0028-0836,1476-4687
DOI: 10.1038/379487a0