نتایج جستجو برای: 3،1،1
تعداد نتایج: 6350 فیلتر نتایج به سال:
Vesicular release of neurotransmitter is the universal output signal of neurons in the brain. It is generally believed that fast transmitter release is restricted to nerve terminals that contact postsynaptic cells in the gray matter. Here we show in the rat brain that the neurotransmitter glutamate is also released at discrete sites along axons in white matter in the absence of neurons and nerv...
The expansion and transformation of shrimp aquaculture in Southeast Asia has occurred in the context of rapid industrialization. Between 1970 and 1993 the contribution by industry to the Association of Southeast Asian Nations (ASEAN) regional Gross Domestic Product (GDP) increased from 25% to 40%, and industrial output increased 25 times during the same period. Energy and pollution intensities ...
Maternal cigarette smoking during pregnancy is associated with increased risk of perinatal morbidity and mortality. However, the mechanisms underlying adverse birth outcomes following prenatal exposure to cigarette smoke remain unknown due, in part, to the absence or unreliability of information regarding maternal cigarette smoke exposure during pregnancy. Our goal was to determine if placental...
We report transport measurements as a function of bias in open semiconductor quantum dots. These measurements are well described by an effective electron temperature derived from Joule heating at the point contacts and cooling by Wiedemann-Franz out-diffusion of thermal electrons. Using this model, we propose and analyze a quantum dot based sensor which measures absolute magnetic field at micro...
The forensic potential of microorganisms is becoming increasingly apparent as a consequence of advances in molecular sciences and genomics. This review discusses instances in which microbes, and in particular bacteria, can impact upon forensic investigations. There is increasing evidence that humans have an extremely diverse ‘microbiome’ that may prove useful in determining ethnicity, country o...
RESEARCH DESIGN AND METHODS GERODIAB is the first French multicenter, prospective, observational survey designed to analyze the influence of glycemic control on morbidity/mortality in type 2 diabetic patients aged ‡70 years during a 5-year follow-up period. This study analyzed the relationships between classical macroangiopathic complications and geriatric scale scores in 987 patients at baseli...
چکیده کراتینین یکی از ترکیبات مهم در بافت موجودات زنده می باشد و بررسی توتومری آن از نظر بیولوژیکی مهم و حائز اهمیت است در این تحقیق به بررسی توتومری مولکول کراتینین پرداخته می شود. در این مطالعه توتومرهای ناشی از انتقال هیدروژن بین اتمهای اکسیژن و نیتروژن و کربن مورد بررسی قرار گرفت. همچنین ساختار و انرژی این توتومرها با استفاده از محاسبات کوانتومی در سطح b3lyp/6-311++g** مورد بررسی قرار گرفت...
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