Download Dictionary of Scientific Biography. Volume 17. Supplement 2. by Frederic L . Holmes (editor in chief) PDF

By Frederic L . Holmes (editor in chief)

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Read or Download Dictionary of Scientific Biography. Volume 17. Supplement 2. LEASON HEBERLING ADAMS - FRITZ H. LAVES PDF

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Critical Phenomena in Loop Models

While with reference to a continual section transition, many actual platforms can usefully be mapped to ensembles of fluctuating loops, which would characterize for instance polymer earrings, or line defects in a lattice magnet, or worldlines of quantum debris. 'Loop types' offer a unifying geometric language for difficulties of this type.

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With Chapman taking over the department of birds and Allen continuing as head of the department of nmanmmals . By 1921, the year of Allen's death . the combined staff of these two departments had grown to seventeen (Chapman . " 5) . 2 . s (Bt'eslau, 1833) . 3 . " 213-215 ; and "The Influence of Physical Conditions in the Genesis of Species," 116-117 . 4 . Carl Georg Bergmann . " in GGnin,eer Studien, pt . I (1847), 595-708 . See also Ernst Mayr, Animal Species and Evolution (Cambridge . Mass . 1963) .

He fought in the Dardanelles campaign and in Serbia in 1915, and in Macedonia from 1916 to 1918 . L'armee d'Orient had established its positions near Salonika, along the east bank of the Vardar River, in an area where Upper Miocene ("Pontian") lacustrine deposits, rich in vertebrate remains, outcrop widely . While the soldiers dug trenches, Arambourg collected numerous bone fragments . As a result, the lieutenant colonel of his regiment allowed him to undertake paleontological excavations and to gather an important collection of mammalian remains belonging to species already known from the deposits at Pikermi in Greece, remains that had been described fifty years earlier by Albert Gaudry .

After its completion, Allison redirected his research into the growing field of experimental nuclear physics . He spent six months in Rutherford's Cavendish Laboratory in Cambridge, England, learning techniques and working with Cockcroft and Walton's accelerator . On his return, he built a machine of this type, thereby introducing experimental nuclear research into the University of Chicago's physics department . He and his students used it to make precision measurements of the masses of various light isotopes by means of proton-induced reactions .

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