نتایج جستجو برای: ترکیب¬های شبه سه¬تایی بین¬فلزی 3:29
تعداد نتایج: 15632 فیلتر نتایج به سال:
در این تحقیق، ترکیبات پودری b10-si14-mo، b10-si57-mo و b23-si47-mo (درصد اتمی) به کمک آسیاب سایشی با سرعت rpm 365 در محیطی خنثی و آبگرد و نسبت وزنی ساچمه به پودر20 در زمان های مختلف، آلیاژسازی مکانیکی شده و در دماها و زمان های گوناگون تحت عملیات آنیل قرار گرفتند. همچنین برخی پودرهای به دست آمده در قالب فولادی استوانه ای تحت فشارهای مختلف فشرده شده و قرص های حاصله، پس از عملیات آنیل در محیط خنثی...
The first total synthesis of an anti-leukemic diterpene natural product EBC-329 (1) has been accomplished starting from readily available 6,6-dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione (7). An efficient and general approach has been reported for the synthesis of EBC-329 in 13 steps with an overall yield of 10%.
گیاه پنج انگشت Vitex Pseudo - negundo یکی از انواع گیاهان دارویی است که در بستر رودخانه های مناطق جنوبی ایران همراه با درختچه های گز و خرزهره به صورت اجتماع گیاهی دیده می شود. رایحه ادویه ای و خوشایندی از این گیاه به خصوص در مرحله گلدهی به مشام می رسد. خواص دارویی متفاوت این گیاه نظیر فعالیت ضد باکتری برخی ترکیبهای موجود در اسانس، اثرات ضد هورمون آندروژن ترکیبهایی مانند aucubin و Casticin، بهبو...
The tension between public health and individual rights raises key questions in the face of public health crises such as tuberculosis (TB) and Ebola: What are the circumstances that warrant the obligatory detention of individuals with an infectious disease as a measure of protecting the general public?1 What are the implications for the protection of privacy while managing and controlling the s...
People engage in multiple types of information-seeking strategies within an information-seeking episode. The objective of this pilot study is to investigate search moves and tactics made by end-users when searching for visual information. The pilot study involves 5 undergraduate students from the Department of Journalism and Media Studies at Rutgers University using the AccuNet/AP Photo Archive...
Ryanodine receptors (RyRs) are intracellular membrane channels playing key roles in many Ca signaling pathways and, as such, are emerging novel therapeutic and insecticidal targets. RyRs are so named because they bind the plant alkaloid ryanodine with high affinity and although it is established that ryanodine produces profound changes in all aspects of function, our understanding of the mechan...
Despite of the fact that a large variety of stochastic structural analysis methods have been developed during the last years, these methods are still not fully accepted by practicing engineers in the industry (see e.g. Székely et al. 1998). One of the key issues of software development for stochastic structural analysis is therefore to bridge the gap between research results and engineering pra...
Nutritional assessment and dietary advice are fundamental to inflammatory bowel disease (IBD) patient management and all patients should have access to a dietitian. Newly diagnosed patients often think that their pre-illness diet has contributed to the development of their IBD. However, epidemiological evidence to support diet as a risk factor is lacking. How the diet contributes to the gastroi...
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