Results 201 to 210 of about 574,787 (253)
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Kinetic Study on Cephamycin C Degradation
Applied Biochemistry and Biotechnology, 2013Cephamycin C (CepC) is a β-lactam antibiotic that belongs to the cephalosporin class of drugs. This compound stands out from other cephalosporins for its greater resistance to β-lactamases, which are enzymes produced by pathogenic microorganisms that present a major mechanism of bacterial resistance to β-lactam antibiotics.
Luciana M, Brites +2 more
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Degradation kinetics of glucosinolates in soil
Environmental Toxicology and Chemistry, 2006Abstract Glucosinolates are compounds produced by all cruciferous plants. They can be hydrolyzed to several biologically active compounds and, as such, may serve as naturally produced pesticides. To optimize the pesticidal (biofumigation) effect and to assess the risk of glucosinolate leaching and spread in the environment, the ...
Gimsing, Anne Louise +4 more
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Kinetics of enzymatic degradation of cyanide
Biotechnology and Bioengineering, 1992AbstractCYANIDASE@ is a new enzyme preparation capable of degrading cyanide in industrial wastewaters to ammonia and formate in an apparently one‐step reaction, down to very low concentrations. This enzyme has both a high selectivity and affinity toward cyanide.
S, Basheer +3 more
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Main Group Chemistry, 2010
O-ethyl S-(2-diisopropylaminoethyl)phosphonothiolate (VX) is among the most toxic of chemical warfare agents. VX is an oily liquid that is relatively involatile and is slow to hydrolyze, and thus may persist for weeks or longer in the environment, creating long term contamination of the territory.
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O-ethyl S-(2-diisopropylaminoethyl)phosphonothiolate (VX) is among the most toxic of chemical warfare agents. VX is an oily liquid that is relatively involatile and is slow to hydrolyze, and thus may persist for weeks or longer in the environment, creating long term contamination of the territory.
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Degradation kinetics of metronidazole in solution
Journal of Pharmaceutical Sciences, 1993The degradation kinetics of metronidazole in aqueous solutions of pH 3.1 to 9.9 under accelerated storage conditions were studied. The stability of metronidazole in solutions containing propylene glycol or polyethylene glycol 400 was also investigated. The reaction order for metronidazole in these aqueous and solvent systems followed pseudo-first-order
D P, Wang, M K, Yeh
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Nefopam Hydrochloride Degradation Kinetics in Solution
Journal of Pharmaceutical Sciences, 1990A stability-indicating reversed-phase high performance liquid chromatographic method was developed for the detection of nefopam hydrochloride and its degradation products under accelerated degradation conditions. The degradation kinetics of nefopam hydrochloride in aqueous solutions over a pH range of 1.18 to 9.94 at 90 +/- 0.2 degrees C was studied ...
Y H, Tu, D P, Wang, L V, Allen
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International Journal of Biological Macromolecules, 2021
To study dextran degradation by sonoenzymolysis, the degradation rate, the change of molecular weight, the mass fractions of fragments of certain molecular weight, and the degradation kinetics were analyzed and compared with the corresponding parameters under ultrasonic and enzymolysis treatments.
Qing, Wang +4 more
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To study dextran degradation by sonoenzymolysis, the degradation rate, the change of molecular weight, the mass fractions of fragments of certain molecular weight, and the degradation kinetics were analyzed and compared with the corresponding parameters under ultrasonic and enzymolysis treatments.
Qing, Wang +4 more
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Degradation methods and degradation kinetics of polymer films
Polymer Degradation and Stability, 1994Abstract Two accelerated degradation systems are described for the marine and soil exposures of polymer films. The systems were designed to provide controlled environments in which rates of degradation could be accelerated. The goal in developing these systems was to provide a standardized basis for comparing degradation kinetics of the films ...
D.L. Kaplan +4 more
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Polydimethylsiloxane thermal degradation Part 1. Kinetic aspects
Polymer, 2001Abstract A combination of traditional kinetic formal treatments and computer simulation has been made to analyze polydimethylsiloxane (PDMS) thermal degradation. It was shown that PDMS thermally decomposes to cyclic oligomers through Si – O bond scission in a chain-folded cyclic conformation energetically favored by overlapping of empty silicon d ...
CAMINO, Giovanni +2 more
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Azo compound degradation kinetics and halonitromethane formation kinetics during chlorination
Chemosphere, 2017The chlorination of azo compounds can produce halonitromethanes (HNMs), which have attracted increasing concern due to their high genotoxicity. By impacting the speciation of chlorine and azo compounds, pH impacts apparent second-order rate constants of Methyl Orange (MO, 27.5-1.4 × 103 M-1 s-1), Acid Orange II (AO, 16.7-99.3 M-1 s-1), and Acid Red 1 ...
Jing Fu +4 more
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