نتایج جستجو برای: nh acid
تعداد نتایج: 759483 فیلتر نتایج به سال:
While it is well established that ecosystems display strong responses to elevated nitrogen deposition, the importance of the ratio between the dominant forms of deposited nitrogen (NH(x) and NO(y)) in determining ecosystem response is poorly understood. As large changes in the ratio of oxidised and reduced nitrogen inputs are occurring, this oversight requires attention. One reason for this kno...
Brucella native haptens (NHs) extracted with hot water from smooth (S)-type B. abortus and B. melitensis were purified to high levels of serological activity and compared with the polysaccharide obtained by acid hydrolysis (PS) of the S lipopolysaccharide (S-LPS). By 13C nuclear magnetic resonance analysis, NHs showed the spectrum of a homopolymer of alpha-1,2- or alpha-1,2- plus alpha-1,3-link...
O presente paper visa trazer, como comunicação científica, o case do projeto de Jornalismo Hiperlocal Lupa NH, este tido enquanto relato experiência na busca desenvolvimento tecnologias sociais voltadas a processos comunicacionais base comunitária. atua no bairro Novo Horizonte, em Macapá (AP), com perspectiva coletar informações e gerar dados partir da geolocalização, por meio aplicativo para ...
Poly(p-phenylene) (PPP) was chemically synthesized via oxidative polymerization using benzene and doped with FeCl(3). The electrical conductivity response of the doped PPP (dPPP) towards CO, H(2) and NH(3) is investigated. dPPP shows no electrical conductivity response towards the first two gases (CO and H(2)), but it shows a definite negative response towards NH(3). The electrical conductivity...
Density functional theory calculations were carried out to investigate the reaction mechanism of selective catalytic reduction of nitrogen oxides by ammonia in the presence of oxygen at the Brønsted acid sites of H-form zeolites. The Brønsted acid site of H-form zeolites was modeled by an aluminosilicate cluster containing five tetrahedral (Al, Si) atoms. A low-activation-energy pathway for the...
The DNA core of adenovirus contains two basic polypeptides V and VII. The major core polypeptide VII (M, = 18,000) is histone-like and has been shown to be derived from a larger polypeptide Pro-VII (M, = 20,000) (Anderson, C. W.. Baum, P. R., and Gesteland, R. F. (1973) J. Virol. 12, 241). Chemical studies were initiated to investigate the processing of P-VII (Pro-VII) to VII in molecular detai...
Serine:glyoxylate and glutamate:glyoxylate aminotransferases (SGAT and GGAT), which catalyze the formation of glycine from glyoxylate during photorespiration, have been purified >300-fold from tobacco leaf extracts. Incubation with glyoxylate in the absence of amino acid substrate resulted in the time- and concentration-dependent inhibition of the partially purified enzymes. The second order ra...
هدف: افزایش لوب نوتروفیل یا هیپرسگمانتاسیون نوتروفیلی، یک یافته هماتولوژیکی است که در کمبود کوبالامین و اسید فولیک به وجود می آید. مطالعات و گزارشات ضد و نقیضی زیادی بر وجود ارتباط بین هیپرسگمانتاسیون نوتروفیلی (nh) و فقرآهن دلالت می کنند. این مطالعه به بررسی ارتباط فقر آهن و آنمی فقرآهن با هیپرسگمانتاسیون نوتروفیلی می پردازد. در این ارتباط اثر کمبود فولات نیز مورد بررسی قرار گرفته است. روش بر...
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