منابع مشابه
Sunshine and multiple sclerosis.
In 1960, Donald Acheson made the seminal observation that the global distribution of multiple sclerosis (MS) may be related to available hours of sunshine; this observation was met with disbelief at the time. However, over the subsequent more than 50 years, it has become clear that he may well be right. The effect of sunlight exposure and subsequent vitamin D production (generated by photolysis...
متن کاملSunshine on MS
tion, and thought that visual solar radiation might provide protection from developing MS. In 1970, a study from Switzerland (which is on a similar latitude in the northern hemisphere as Tasmania is in the southern hemisphere) [5] showed a higher clinical RR in winter and spring months, and a later study (also from the northern hemisphere) [6] of seasonal fluctuations in Gd-enhancing lesions on...
متن کاملSunshine or Shield?
How does the use of a secret vote affect the likelihood that legislators will punish their peers? Two contending arguments exist in the literature: some argue that secret voting may be prejudicial, while others argue that it may help accountability. We address this controversy by analyzing the case of the Brazilian Congress, which uses a sequential combination of open and secret voting procedur...
متن کاملSnowfall in High Southern Latitudes
based upon t(h)•e atmospheric water balance equation pr vide seasonal precipitation amou ts for areas l rger than I xl km 2. For broad-scale studies in the continental interior net snow accumulation closely approximates precipitation. Annual precipitation is relatively high over the marginal ice slopes in relation to amounts in the interior. This meridional distribution is due to the orographic...
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ژورنال
عنوان ژورنال: Monthly Weather Review
سال: 1898
ISSN: 0027-0644,1520-0493
DOI: 10.1175/1520-0493(1898)26[108a:nasas]2.0.co;2