Results 91 to 100 of about 1,225 (142)
Science, 1889 "Entomological Department"--Cover. ; Cover title. ; Mode of access: Internet.
A J Cook
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The Oxidation of Arsenite in Seawater
Environmental Letters, 1975The oxidation rate of arsenite in seawater is very slow. Of the parameters investigated which might affect this rate the most important were temperature, initial arsenite concentration, salinity and pH. An empirical rate expression was developed from experimental data which led to a prediction that the natural rate of oxidation in the ocean is about 0 ...
Johnson, D. L., Pilson, M. E.Q.
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The arsenite oxidase genes (aroAB) in novel chemoautotrophic arsenite oxidizers
Biochemical and Biophysical Research Communications, 2007Six novel bacterial strains were isolated from the environment which can oxidize arsenite [As(III)] to the less mobile form arsenate [As(V)] coupled to CO(2) fixation under either aerobic or denitrifying conditions. PCR primers were designed to the conserved molybdopterin domain of the large subunit of arsenite oxidase in order to identify the arsenite
E D, Rhine +3 more
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Research in Microbiology, 2013
We describe a real-time PCR assay for the quantitative detection of arsB and ACR3(1) arsenite transporter gene families, two ubiquitous and key determinants of arsenic resistance in prokaryotes. The assay was applied in batch growth experiments using a wasteland soil bacterial community as an inoculum to investigate the effect of increasing arsenite ...
Poirel, Jessica +3 more
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We describe a real-time PCR assay for the quantitative detection of arsB and ACR3(1) arsenite transporter gene families, two ubiquitous and key determinants of arsenic resistance in prokaryotes. The assay was applied in batch growth experiments using a wasteland soil bacterial community as an inoculum to investigate the effect of increasing arsenite ...
Poirel, Jessica +3 more
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The metabolism of arsenite and arsenate by the rat
Fundamental and Applied Toxicology, 1983Differences in distribution and metabolism of arsenite and arsenate were studied in rats and in rat liver and kidney slices and hepatocytes. Five minutes after i.v. administration of 4.8 nmol arsenite or arsenate to male Sprague-Dawley rats, blood levels of arsenic were only 10 percent of the initial dose.
S, Lerman, T W, Clarkson
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Метафраст, 2019
В статье осуществлён полный обзор историографии и источников по арсенитскому расколу (1265-1310). Источники оцениваются с точки зрения их подлинности, достоверности, информативности и объективности. Они разделены на 5 групп: исторические, проарсенитские, антиарсенитские, документы о мире 1310 г. и другие источники.
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В статье осуществлён полный обзор историографии и источников по арсенитскому расколу (1265-1310). Источники оцениваются с точки зрения их подлинности, достоверности, информативности и объективности. Они разделены на 5 групп: исторические, проарсенитские, антиарсенитские, документы о мире 1310 г. и другие источники.
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A plasmid-encoded arsenite pump produces arsenite resistance in Escherichia coli
Biochemical and Biophysical Research Communications, 1984The arsenate resistance operon of R-factor R773, a conjugative resistance plasmid, has two functional regions, a promoter-proximal region encoding resistance to arsenite and antimonate, and a promoter-distal one encoding arsenate resistance. Cells bearing arsenite resistance plasmids exhibited reduced accumulation of 74AsO2-.
B P, Rosen, M G, Borbolla
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Nitric oxide production by arsenite
Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis, 2003Arsenic can either enhance or reduce nitric oxide (NO) production, depending on the type of cell, the species and dose of arsenical tested. The mechanisms of how arsenic increases or decreases NO production remain unclear. Because NO is associated with many pathological conditions, it is conceivable that in those arsenic-target tissues, the NO ...
Jia-Ran, Gurr +5 more
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Biosensor for Arsenite Using Arsenite Oxidase and Multiwalled Carbon Nanotube Modified Electrodes
Analytical Chemistry, 2007A biosensor for arsenite has been developed using molybdenum-containing arsenite oxidase, prepared from the chemolithoautotroph NT-26 that oxidizes arsenite to arsenate. The enzyme was galvanostatically deposited for 10 min at 10 microA onto the active surface of a multiwalled carbon nanotube modified glassy carbon electrode.
Male, Keith B. +3 more
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Diversity of inorganic arsenite biotransformation
Biological Trace Element Research, 1999Biotransformation of inorganic arsenic in mammals is catalyzed by three serial enzyme activities: arsenate reductase, arsenite methyltransferase, and monomethylarsonate methyltransferase. Our laboratory has purified and characterized these enzymes in order to understand the mechanisms and elucidate the variations of the responses to arsenate/arsenite ...
S M, Healy +3 more
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