نتایج جستجو برای: ژن sn
تعداد نتایج: 40775 فیلتر نتایج به سال:
The present study has investigated the effect of panipenem, a widely used antibiotic, on the pharmacokinetics of an active metabolite of irinotecan (CPT-11), 7-ethyl-10-hydroxy-camptothecin (SN-38) and SN-38 glucuronide (SN-38G) produced by uridine-diphosphate glucuronosyltransferase (UGT) 1A isoform-mediated glucuronidation in rats. Rats received a 1 h infusion with panipenem at a loading dose...
We present extensive photometric and spectroscopic observations of the Type Ia supernova (SN Ia) 2000cx in the S0 galaxy NGC 524, which reveal it to be peculiar. Photometrically, SN 2000cx is different from all known SNe Ia, and its light curves cannot be fit well by the fitting techniques currently available. There is an apparent asymmetry in the B-band peak, in which the premaximum brightenin...
smartepants کد محاسباتی هسته ای است که از روش sn برای حل معادله ترابرد ذرات استفاده می نماید. خروجی کد شامل شار ذرات، جریان نشتی و تخلیه بار-انرژی است که در مختصات سه بعدی x-y-z برای جفت الکترون-فوتون بدست می آید. از کد cepxs برای تولید سطح مقطع های مورد نیاز smartepants استفاده می شود. کارایی کد smartepants در محاسبات مربوط به حفاظ گذاری ماهواره ها به اثبات رسیده است. با این وجود اشکال عمده ای...
در این پایاننامه با استفاده از نرمافزار گوسین 98 نسخه a7 محاسبات کامل از اساس و dft به وسیله روش b3lyp و مجموعه پایه 6-311++g**، بر روی حالت های یکتایی و سهتایی تعداد زیادی از گونه های حدواسط دو ظرفیتی شامل عناصر گروه 14 جدول تناوبی که همگی همولوگ های کاربن با فرمول کلی xc6h7m و r2c6h6m که m = c, si, ge, sn, pb، (x = -nh2, -oh, -ch3, -h, -br, -cl, -f, -cf3, -no2) و (r = -ch3, -i-pr, -tert-bu...
We present a study of the effects of clumping on the emergent spectral energy distribution (SED) from dusty supernova (SN) shells illuminated by a diffuse radiation source distributed throughout the medium. These models are appropriate for Type II SNe older than a few hundred days, when the energy input is dominated by γ-rays from Co decay. The fully 3D radiation transport problem is solved usi...
We present spectroscopy and photometry of the He-rich supernova (SN) 2008ax. The earlytime spectra show prominent P-Cygni H lines, which decrease with time and disappear completely about 2 months after the explosion. In the same period He I lines become the most prominent spectral features. SN 2008ax displays the ordinary spectral evolution of a Type IIb supernova. A stringent pre-discovery lim...
The spectra of SN 2003dh, identified in the afterglow of GRB030329, are modelled using radiation transport codes. It is shown that SN 2003dh had a high explosion kinetic energy (∼ 4× 10 erg), making it one of the most powerful hypernovae observed so far, and supporting the case for association between hypernovae and Gamma Ray Bursts. However, the light curve derived from fitting the spectra sug...
The first dianionic compound bearing a bond between two pentacoordinated tin atoms, a distannate, was synthesized in a stable form by using two sets of an electron-withdrawing C,O-bidentate ligand on each tin atom. The structure of the distannate was determined by NMR spectroscopy and X-ray crystallographic analysis. The Sn-Sn bond of the distannate was shown to be a single bond featuring high ...
Isotopic yields for light particles and intermediate mass fragments have been measured for Sn+Sn, Sn+Sn, Sn+Sn and Sn+Sn central collisions at E/A=50 MeV and compared with predictions of stochastic mean field calculations. These calculations predict a sensitivity of the isotopic distributions to the density dependence of the asymmetry term of the nuclear equation of state. However, the secondar...
Six strains of Bacillus cereus exhibiting antifungal activity were isolated from local environment and optimized for growth conditions. The isolates appeared neutrophiles, grew best at aeration and were represented by thermophiles and mesophiles. Growth inhibition zones of varying diameters were observed when the isolates were tested against Saccharomyces cerevisiae on nutrient agar. Largest in...
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