نتایج جستجو برای: heu
تعداد نتایج: 216 فیلتر نتایج به سال:
راکتور تحقیقاتی تهران در سال 1342 راهاندازی شد. سوخت این راکتور در سال 1372 از درجه غنای بالا (heu) به درجه غنای پایین (leu) تبدیل شده است. سوخت های heu مصرف شده این راکتور در حوضچه ای نگه‍داری می شوند که در دوره های قبلی به طور کامل استفاده نشده و هنوز دارای اورانیوم کافی جهت راه اندازی قلب دیگری می باشند. لذا، هدف یافتن بهترین چیدمان قلب برای یک راکتور تحقیقاتی قدرت پایین با این سوخت های بر ...
BACKGROUND Recent transcriptomic studies revived a hypothesis suggested by historical studies in rabbits that the ratio of peripheral blood monocytes to lymphocytes (ML) is associated with risk of tuberculosis (TB) disease. Recent data confirmed the hypothesis in cattle and in adults infected with HIV. METHODS We tested this hypothesis in 1,336 infants (540 HIV-infected, 796 HIV-exposed, unin...
We construct an irreducible holomorphic connection with SL(2,R)–monodromy on the trivial vector bundle of rank two over a compact Riemann surface. This answers question Calsamiglia, Deroin, Heu and Loray in [5]. Dans cet article nous munissons le fibré vectoriel holomorphe de rang deux au-dessus d'une surface compacte genre g≥2, connexion irréductible dont la monodromie est contenue dans SL(2,R...
The study of affective computing in the wild setting is underpinned by databases. Existing multimodal emotion databases real-world conditions are few and small, with a limited number subjects expressed single language. To meet this requirement, we collected, annotated, prepared to release new natural state video database (called HEU Emotion). Emotion contains total 19,004 clips, which divided i...
Different enrichment processes have been used historically to produce highly enriched uranium (HEU) for weapon purposes. The most relevant ones are the gaseous diffusion process and the gas centrifuge. The two exploit different physical principles to separate isotopes of different molecular weight. It could therefore be expected that HEU might carry an isotopic signature that is unique to the e...
Let G = (V, E) be a connected finite graph and ∆ be the usual graph Laplacian. Using the calculus of variations and a method of upper and lower solutions, we give various conditions such that the Kazdan-Warner equation ∆u = c− heu has a solution on V , where c is a constant, and h : V → R is a function. We also consider similar equations involving higher order derivatives on graph. Our results ...
A facile quantitative determination of the Si/Al ratio (SAR) in zeolite frameworks using IR spectroscopy is reported. From linear regression analysis, SAR for medium-to-high Al content zeolites (1 < 5) correlates linearly to corresponding intensity band at wavenumbers (950-1090 cm?1). This model has been validated with 19 different and framework topologies (EDI, ABW, EMT, MER, LTL, LTJ, MOR, FA...
OBJECTIVE To evaluate the association of tenofovir disoproxil fumarate (TDF) use during pregnancy with early growth parameters in HIV-exposed, uninfected (HEU) infants. DESIGN US-based prospective cohort study of HEU children to examine potential adverse effects of prenatal TDF exposure. METHODS We evaluated the association of maternal TDF use during pregnancy with small for gestational age...
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