منابع مشابه
Population variation in age-related decline in male salivary testosterone.
BACKGROUND Age-related declines in free and bioavailable testosterone are frequently reported for Western populations, but interpopulation variation in this pattern has not previously been investigated. METHODS Salivary testosterone was measured using a consistently applied protocol on morning samples collected from men in four populations (USA, Congo, Nepal, and Paraguay) representing differ...
متن کاملThe Structure, Stability and Pheromone Binding of the Male Mouse Protein Sex Pheromone Darcin
Mouse urine contains highly polymorphic major urinary proteins that have multiple functions in scent communication through their abilities to bind, transport and release hydrophobic volatile pheromones. The mouse genome encodes for about 20 of these proteins and are classified, based on amino acid sequence similarity and tissue expression patterns, as either central or peripheral major urinary ...
متن کاملthe relationship between listening self efficacy, listening comprehension, gende, and age in male and female english learners
چکیده هدف اصلی تحقیق حاضر مطالعه و بررسی رابطه بین خودکارامدی شنیداری با درک شنیداری بود.همچنین رابطه درک شنیداری وخودکارآمدی شنیداری با جنسیت و رابطه خودکارامدی شنیداری با سن نیز مورد بررسی قرار گرفت.تعداد شصت زبان اموز-سی دختر و سی پسر- کانون زبان ایران در مرکز خرم آباد به صورت تصادفی انتخاب شدند. روشهای به کار رفته در جمع اوری داده ها عبارت بودند ازبرسشنامه خودکارآمدی و تست درک شنیداری لانگ...
15 صفحه اولPheromone-induced anorexia in male Syrian hamsters.
Transition from long days (LDs) to short days (SDs) triggers seasonal obesity in Syrian hamsters. We report here that SD-exposed males housed near females exhibit obesity resistance, episodic weight loss, and reduced adiposity. Negative energy balance is achieved by reduced eating, elevated motor activity, and increased caloric efficiency without metabolic compensation. Circulating leptin, insu...
متن کاملDecline and Fall of Activity with Age
Ages for the components of binary stars are calculated from measurements of their chromospheric activity using the HK spectrophotometer at Mount Wil-son Observatory. Binaries are useful for age calibration because bright open clusters spanning the entire solar Main Sequence lifetime are not readily available, and also because age determinations using moving groups are comparatively uncertain ow...
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ژورنال
عنوان ژورنال: Biology of Reproduction
سال: 1983
ISSN: 0006-3363,1529-7268
DOI: 10.1095/biolreprod29.1.81