منابع مشابه
Making progress on the natural history of multiple sclerosis.
Typically, the clinical course of multiple sclerosis is characterized by episodes, from which recovery may occur, and by progression. These phases usually evolve in sequence as part of the natural history. The number and frequency of episodes and the interval between first presentation and the often somewhat blurred transition to disease progression are generally held to be rather unpredictable...
متن کاملNatural history , life history , and
We report on basic natural history, life history, and diet of Priapella chamulae (Poeciliidae) from Arroyo Tres, a small creek in Tabasco, southern México. The tertiary (adult) sex ratio was heavily female-skewed, female P. chamulae produced medium-sized offspring (~2.3 mg), one clutch at a time (i.e., showed no superfetation), and relied predominantly on yolk for embryo provisioning (Matrotrop...
متن کاملNatural history and temporalization: reflections on Buffon's Natural history.
This article presents a rereading of Buffon's Natural History in the light of the concepts of temporal reversibility and irreversibility. The goal is to determine to what extent Buffon introduces a transformationist concept of natural forms in this work. To that effect, the main points of classical natural history and the doctrine of preformed germs are analyzed. Subsequently, Buffon's use of t...
متن کاملHistory in the making.
I t's not every day that a business school alumnus makes history, but that is just what Peter T. Paul accomplished with his gift of $25 million—the largest in UNH history. The announcement by UNH President Mark W. Huddleston elicited several standing ovations from an appreciative audience comprising University faculty, staff, trustees, students, alumni, business leaders, and members of the pres...
متن کاملSome Popular Misconceptions About Magnetic Recording History and Theory
Magnetic recording was first proposed by Oberlin Smith in 1878, but the first working recorder was not built until 1898, by Poulsen [1] [2]. The early magnetic recorders all used a steel wire or tape, but these were “non-starters” – too clumsy, not easily spliceable, too heavy, and too expensive. In those days there were no electronic amplifiers, and the distortion was much too high, so magneti...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1915
ISSN: 0036-8733
DOI: 10.1038/scientificamerican11201915-328supp