نتایج جستجو برای: nh4cl

تعداد نتایج: 932  

2017
J. P. Pique G. Dolino M. Vallade

2014 We present here measurements of the temperature variation of the electro-optic effect in the low temperature phase of NH4Cl and we show how they are related to the order parameter of the order-disorder transition. These measurements are made difficult by the presence of parasitic strain birefringence, and by the existence of domains which produce a change of sign of the electro-optic effec...

2017
Robert Fuller

Electrical conductivity measurements are reported for normal and deuterated ammonium chloride single crystals in the temperature regions which characterize the pure and the impurity-dominated materials. We conclude from the data that conductivity in ammonium chloride is due to the formation of either cation or anion vacancies and a subsequent process controlled by a proton transfer. Our results...

پایان نامه :دانشگاه تربیت معلم - سبزوار - دانشکده علوم پایه 1390

در این پایان نامه روش های ساده و کارآمدی برای سنتز بیس-ایندولیل متان ها ارائه شده است. در ابتدا واکنش آلدئیدها و کتون ها با ایندول در حضور مقدار کاتالیزوری از 3،1-دی برمو-5،5-دی متیل هیدانتوئین (dbdmh) در غیاب حلال و در دمای 50 درجه سانتی گراد صورت گرفت و بیس-ایندولیل متانها با بازده-های بسیار خوب و در زمانهای کوتاه بدست آمدند. سپس واکنش فوق در حضور کاتالیزور تری-کلروایزوسیانوریک اسید(tcca) انج...

Journal: :The Biochemical journal 1995
R Docampo D A Scott A E Vercesi S N Moreno

The use of digitonin to permeabilize the plasma membrane of Trypanosoma cruzi allowed the identification of a non-mitochondrial nigericin- or bafilomycin A1-sensitive Ca(2+)-uptake mechanism. Proton uptake, as detected by ATP-dependent Acridine Orange accumulation, was also demonstrated in these permeabilized cells. Under these conditions Acridine Orange was concentrated in abundant cytoplasmic...

Journal: :The Journal of Cell Biology 1986
W J Brown J Goodhouse M G Farquhar

We have examined the distribution of mannose-6-phosphate (Man6P) receptors (215 kD) for lysosomal enzymes in cultured Clone 9 hepatocytes at various times after the addition or removal of lysosomotropic weak bases (chloroquine or NH4Cl). Our previous studies demonstrated that after treatment with these agents, Man6P receptors are depleted from their sorting site in the Golgi complex and accumul...

Journal: :The Journal of General Physiology 1976
W F Boron P De Weer

The intracellular pH (pHi) of squid giant axons has been measured using glass pH microelectrodes. Resting pHi in artificial seawater (ASW) (pH 7.6-7.8) at 23 degrees C was 7.32 +/- 0.02 (7.28 if corrected for liquid junction potential). Exposure of the axon to 5% CO2 at constant external pH caused a sharp decrease in pHi, while the subsequent removal of the gas caused pHi to overshoot its initi...

Journal: :Nanoscale 2017
Bing Ma Huimei Cui Darui Wang Peng Wu Chen Zhao

Ni based catalysts are wildly used in catalytic industrial processes due to their low costs and high activities. The design of highly hierarchical core-shell structured Ni/HBEA is achieved using a sustainable, simple, and easy-tunable hydrothermal synthesis approach using combined NH4Cl and NH3·H2O as a co-precipitation agent at 120 °C. Starting from a single-crystalline hierarchical H+-exchang...

Journal: :BMC Pulmonary Medicine 2009
Ralf Geiger Benedikt Treml Anna Pinna Linn Barnickel Harald Prossliner Hannes Reinstadler Michael Pilch Maria Hauer Christoph Walther Hans-Jörg Steiner Thomas Giese Andreas Wemhöner Sabine Scholl-Bürgi Waldemar Gottardi Roland Arnitz Consolato Sergi Markus Nagl Alexander Löckinger

BACKGROUND N-chlorotaurine, a long-lived oxidant produced by human leukocytes, can be applied in human medicine as an endogenous antiseptic. Its antimicrobial activity can be enhanced by ammonium chloride. This study was designed to evaluate the tolerability of inhaled N-chlorotaurine (NCT) in the pig model. METHODS Anesthetized pigs inhaled test solutions of 1% (55 mM) NCT (n = 7), 5% NCT (n...

Journal: :Scandinavian journal of immunology 1995
P J van Horssen Y V van Oosterhout T de Witte F W Preijers

Cytotoxicity of immunotoxins (ITs) varies considerably depending on factors like the capability of the target antigen to internalize IT molecules, intracellular processing and routing of the IT. We studied factors that may influence cytotoxicity of CD22-ricin A IT to several B cell lines. The antigen density varied from 5.9 x 10(3) to 6.0 x 10(4) molecules/cell. The ID50, determined by protein ...

2017
Wenfa Ng

Microbes for environmental research should be cultured in growth media with characteristics (e.g., pH, ionic strength, and ionic composition) as close to their original habitat as possible. Additionally, the medium should also enable high cell density to be obtained, which is needed for providing sufficient cells in subsequent experiments. This in-progress report describes the formulation of a ...

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