نتایج جستجو برای: nh

تعداد نتایج: 14767  

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...

Journal: :Physical chemistry chemical physics : PCCP 2011
Vinh Son Nguyen Saartje Swinnen Jerzy Leszczynski Minh Tho Nguyen

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...

Journal: :Physical Chemistry Chemical Physics 2021

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.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده علوم پایه 1393

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 ...

Journal: :Pharmacological reports : PR 2009
Margarita Kirkova Rositsa Zamfirova Monika Leśkiewicz Marta Kubera Władysław Lasoń Simeon Todorov

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 ...

Journal: :The astrophysical journal 2021

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$...

Journal: : 2022

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...

Journal: :BioMedical Engineering OnLine 2006

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