نتایج جستجو برای: پیرانو d 2
تعداد نتایج: 2894307 فیلتر نتایج به سال:
با توجه به اهمیت مشتقهای کومارین و بهویژه پیرانوکرومنها به دلیل داشتن ویژگی متفاوت شیمیایی و زیستی در این پژوهش، مشتقهای پیرانو(h-3،2) کومارین از واکنش بنزالدهید و مشتقهای کرومن در حضور نانوچندسازه Ti–Al/Al2O3 بهعنوان کاتالیست و در حلال متانول تهیه شد. فراوردههای بهدستآمده با طیفسنجیهای FTIR، 1H NMR و 13C NMR شناسایی شدند. پس از شناسایی، ...
This paper describes a framework for human motion understanding , deened here as estimation of the physical state of the body (the Plant) combined with interpretation of that part of the motion that cannot be predicted by the plant alone (the Behavior). The described behavior system operates in conjunction with a real-time, fully-dynamic, 3-D person tracking system that provides a mathematicall...
We argue that the proper way to treat thin–thick accretion-disk transitions should take into account the 2-D nature of the problem. We illustrate the physical inconsistency of the 1-D vertically integrated approach by discussing a particular example of the convective transport of energy.
In this paper, we determine the primitive solutions of Diophantine equation $(x-d)^2+x^2+(x+d)^2=y^n$ when $n\geq 2$ and $d=p^b$, $p$ a prime $p\leq 10^4$. The main ingredients are characterization divisors Lehmer sequences development an algorithmic method proving non-existence integer $f(x)=a^b$, where $f(x)\in\mathbb{Z}[x]$, $a$ is positive $b$ arbitrary integer.
There is a high prevalence of vitamin D deficiency worldwide, but how to define vitamin D deficiency is controversial. Currently, the plasma concentration of total 25-hydroxyvitamin D [25(OH)D] is considered an indicator of vitamin D status. The free hormone hypothesis states that protein-bound hormones are inactive while unbound hormones are free to exert biological activity. The majority of c...
BACKGROUND The modest clothing that Orthodox Jewish women wear exposes very little of their skin to sunlight. Under these conditions they may develop vitamin D deficiency, even in sunny Israel. OBJECTIVES To determine and compare the vitamin D nutritional status in Jewish orthodox mothers to that of non-orthodox mothers who live in the same metropolitan area in Israel. METHODS 25-Hydroxyvit...
CONTEXT A number of controversies exist regarding appropriate treatment strategy for Vitamin D deficiency. AIMS The aim of this study was to investigate the efficacy of equivalent doses of oral cholecalciferol (60,000 IU weekly for 5 weeks) versus intramuscular (IM) cholecalciferol (300,000 IU) in correcting Vitamin D deficiency in apparently healthy volunteers working in a hospital. SETTIN...
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