نتایج جستجو برای: nitrate ion

تعداد نتایج: 235664  

2009
Jia-Tian Wang Xin Xiao Yun-Qian Zhang Sai-Feng Xue Qian-Jiang Zhu

In the crystal of the title compound, [Ni(NO(3))(2)(C(18)H(10)N(4))(H(2)O)]·H(2)O, the Ni(II) ion is coordinated in a distorted octahedral geometry by two N atoms of the 1,10-phenanthroline moiety of the ligand, three O atoms from two nitrate anions and an O atom from one water mol-ecule. O-H⋯O hydrogen bonds between the coordinated and the solvent water molecules and between these water molecu...

2003
M. BASRI A. B. SALLEH

The production of thermostable extracellular protease by Bacillus stearothermophilus F1 was influenced by the composition of culture medium. Peptone iv derived from soybean was the best organic compound for enzyme production. Sodium nitrate, ammonium salts and amino acids as sole nitrogen sources interfered with protease formation. The addition of most carbon sources to the peptone medium faile...

Journal: :Cell 2009
Cheng-Hsun Ho Shan-Hua Lin Heng-Cheng Hu Yi-Fang Tsay

Ions serve as essential nutrients in higher plants and can also act as signaling molecules. Little is known about how plants sense changes in soil nutrient concentrations. Previous studies showed that T101-phosphorylated CHL1 is a high-affinity nitrate transporter, whereas T101-dephosphorylated CHL1 is a low-affinity transporter. In this study, analysis of an uptake- and sensing-decoupled mutan...

2016
Hidetaka Nomaki Joan M. Bernhard Akizumi Ishida Masashi Tsuchiya Katsuyuki Uematsu Akihiro Tame Tomo Kitahashi Naoto Takahata Yuji Sano Takashi Toyofuku

Some benthic foraminiferal species are reportedly capable of nitrate storage and denitrification, however, little is known about nitrate incorporation and subsequent utilization of nitrate within their cell. In this study, we investigated where and how much (15)N or (34)S were assimilated into foraminiferal cells or possible endobionts after incubation with isotopically labeled nitrate and sulf...

Journal: :Journal of AOAC International 2000
L Merino U Edberg G Fuchs P Aman

Nitrite and nitrate are used as additives in the food industry to provide color and taste and to control undesirable gas and flavor production by anaerobic bacteria by virtue of their antimicrobial properties. The analytical method that has been widely used to determine nitrite and nitrate involves the use of toxic cadmium. In response to a request from the Nordic Committee on Food Analysis, a ...

2016
BHAVIN VYAS

Objective: To develop an ultraperformance liquid chromatography (AcquityTM UPLC) method for simple, fast, accurate and simultaneous determination of nitrite and nitrate ions as stable forms of nitric oxide (NO) production in rat plasma. Methods: The ion-pairing AcquityTM UPLC method with reverse phase BEH C18 column was used along with photodiode array (PDA) UV-Vis detector to separate and dete...

Katreddi Reddy, Sriramula Vidya Sagar Babu

Five rare earth complexeslanthanum(III),praseodymium(III),neodymium(III), samarium(III) and europium(III) have been synthesized from Schiff base ligand (N,N-bis (2-hydroxy-1-naphthylidene) acetylhydrazone). The complexes were characterized based on elemental analysis, molar conductance, ultraviolet, infrared, mass, thermogravimetric and powder X-ray diffraction studies. Infrared spectra sug...

2008
Hua Sun Chun-Xia Ren Bin Shen Zhi-Qiang Liu Yu-Qiang Ding

The reaction of 1,4-bis-(4,5-dihydro-1H-imidazol-2-yl)benzene (bib) with silver(I) nitrate in a 1:1 molar ratio generates the metallacyclic title complex, [Ag(2)(C(12)H(14)N(4))(2)](NO(3))(2)·2H(2)O, in which the bib ligand displays a cis configuration. Each bib ligand acts as a bidentate bridging ligand connecting a pair of Ag(I) ions to form a [2 + 2] metallamacrocycle in which the Ag⋯Ag dist...

2013
Cameron A. McCormick Vu D. Nguyen Heather E. Renfro Lynn V. Koplitz Joel T. Mague

The title mol-ecular salt, C7H7N2 (+)·NO3 (-), displays an inter-penetrating sheet structure parallel to a with each sheet containing nearly coplanar cations and anions, each ion being bis-ected by a crystallographic mirror plane. C-H⋯O hydrogen bonds involving both ring and methyl H atoms in addition to cation-cation C-H⋯N hydrogen bonds (ring H to cyano N) serve to link the sheets together. I...

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