Adolph Sachs 1885–1955
نویسندگان
چکیده
منابع مشابه
Kantowski-Sachs String Cosmologies
We present new exact solutions of the low-energy-effective-action string equations with both dilaton φ and axion H fields non-zero. The background universe is of Kantowski-Sachs type. We consider the possibility of a pseudoscalar axion field h (H = eφ(dh)∗) that can be either time or space dependent. The case of time-dependent h reduces to that of a stiff perfect-fluid cosmology. For space-depe...
متن کاملBernard Sachs (1858-1944)
Bernard Sachs studied nervous system disorders in children in the United States during the nineteenth and twentieth centuries. In the late 1880s, Sachs described the fatal genetic neurological disorder called amaurotic family idiocy, later renamed Tay-Sachs disease. The disorder degrades motor skills as well as mental abilities in affected individuals. The expected lifespan of a child with Tay-...
متن کاملEngaging Hill-Sachs Defects
This open-access article is published and distributed under the Creative Commons Attribution NonCommercial No Derivatives License (http://creativecommons.org/licenses/by-nc-nd/3.0/), which permits the noncommercial use, distribution, and reproduction of the article in any medium, provided the original author and source are credited. You may not alter, transform, or build upon this article witho...
متن کاملTay-Sachs Disease
In 1881 British ophthalmologist Warren Tay made an unusual observation. He reported a cherry-red spot on the retina of a one-year-old patient, a patient who was also showing signs of progressive degeneration of the central nervous system [4] as manifested in the child?s physical and mental retardation [5]. This cherry-red spot is a characteristic that would eventually come to be associated with...
متن کاملThe Sachs-Wolfe effect
We present a pedagogical derivation of the SachsWolfe effect, specifically the factor 3 relating the temperature fluctuations to gravitational potentials. The result arises from a cancellation between gravitational redshifts and intrinsic temperature fluctuations which can be derived from a coordinate transformation of the background.
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ژورنال
عنوان ژورنال: Gastroenterology
سال: 1956
ISSN: 0016-5085
DOI: 10.1016/s0016-5085(56)80014-0