نتایج جستجو برای: nh
تعداد نتایج: 14767 فیلتر نتایج به سال:
Background Cholestatic jaundice in infancy is always pathologic and mainly caused by biliary atresia (BA), and neonatal hepatitis (NH). The early discrimination of both conditions is critical for the outcome of BA. We aimed to assess different non-invasive diagnostic tools in differentiating BA from NH. Materials and Methods Forty infants (25 boys, 15 girls) with cholestatic jaundice and final...
The reactivity of hydrazine in the presence of diborane has been investigated using ab initio quantum chemical computations (MP2 and CCSD(T) methods with the aug-cc-pVTZ basis set). Portions of the relevant potential energy surface were constructed to probe the formation mechanism of the hydrazine diborane (BH(3)BH(3)NH(2)NH(2)) and hydrazine bisborane (BH(3)NH(2)NH(2)BH(3)). The differences be...
Humidograms of mixed NaCl/(NH4)2SO4 particles show two or three transitions depending on the initial molar composition. Up to five solid salts can coexist within dry particles: NaCl, (NH4)2SO4, NH4Cl, Na2SO4 and NH4NaSO4·2H2O.
بررسی شده است. برای انجام محاسبات، روش تابعی چگالی با تقریب گرادیان تعمیم یافته و حل معادلات کوهن- شم با استفاده از شبه پتانسیل و موج تخت به کار رفته است. پس از بهینه سازی ساختار ها، محاسبات ساختار های نواری، چگالی حالت های کل و چگالی حالت های محلی انجام شده است. ساختار خالص (sio2)n با n=20 نسبت به ساختار n=16 نسبتاً پایدار شناخته شد و همچنین دارای انرژی فرمی و ممان مغناطیسی بزرگتری است. در اثر ...
The effect of side-chain shortening of N/OFQ(1-13)NH(2) at position 9 ([Orn(9)]N/OFQ(1-13)NH(2), [Dab(9)]N/OFQ(1-13)NH(2), [Dap(9)]N/OFQ(1-13)NH(2)) was studied regarding potential toxicity and antioxidant capacity. Staurosporine- and H2O2-induced damage of SH-SY5Y neuroblastoma cells was not changed in the presence of N/OFQ(1-13)NH(2) and [Orn(9)]N/OFQ(1-13)NH(2), but was strongly enhanced in ...
Amines, in particular primary amines (R-NH$_2$) are closely related to the primordial synthesis of amino acids since they share same structural backbone. However, only limited number has been identified ISM which prevents us from studying their chemistry as well relation pre-biotic species that could lead emergence life. In this letter, we report first interstellar detection vinylamine (C$_2$H$...
In the present study, crystal structures of non-chelating EDTA molecules and their non-chelation salts in a zwitterionic state, along with EDTA-chelates alkali alkaline earth metals, were searched overviewed. 25 EDTA, zwitterions ethylenediammonium-diacetate diacetic acid HOOC-CH2-(-OOC-CH2-)NH+-CH2-CH2-NH+(-CH2-COO-)-CH2-COOH (ethylenediammonium-tetraacetic (HOOC-CH2-)2NH+-CH2-CH2-NH+(-CH2-CO...
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