Results 301 to 310 of about 579,743 (356)

Degradation Kinetics of Diltiazem

Drug Development and Industrial Pharmacy, 1990
AbstractThe kinetics of degradation of diltiazem hydrochloride in aqueous buffered solutions (pH 1-7) were studied. Diltiazem was found to undergo hydrolysis to desacetyldiltiazem. The decomposition of diltiazem followed pseudo-first order kinetics under the experimental conditions.
M. S. Suleiman, M. E. Abdulhameed, N. M. Najib, H. Y. Muti   +3 more
openaire   +1 more source

Degradation of ofloxacin by potassium ferrate: kinetics and degradation pathways

Environmental Science and Pollution Research, 2022
Drug residues, including various antibiotics, are being increasingly detected in aqueous environments. Ofloxacin (OFX) is one such antibiotic that is widely used in the treatment of several bacterial infections; however, chronic exposure to this antibiotic can have adverse impacts on human health.
Yanghan, Chen, Qiuye, Jin, Zhaomin, Tang
openaire   +2 more sources

Degradation kinetics of polyol

Journal of Propulsion and Power, 1989
The degradation kinetics of Isro-Polyol, a propellaiit binder, were studied by dynamic thermogravimetry at different heating rates in nitrogen atmosphere. The experimental data indicate polyol decomposition follows a three-step reaction mechanism. The order of reaction for each step was calculated using a differential method and an integral method. The
Hans Raj, Dhirendra Nigam, G. N. Mathur
openaire   +1 more source

Kinetics of Contaminant Degradation by Permanganate

Environmental Science & Technology, 2005
To provide a more complete understanding of the kinetics of in situ chemical oxidation (ISCO) with permanganate (MnO4-), we measured the kinetics of oxidation of 24 contaminants-many for which data were not previously available. The new data reported here were determined using an efficient method based on continuous measurement of the MnO4 ...
Rachel H, Waldemer, Paul G, Tratnyek
openaire   +2 more sources

Kinetic Study on Cephamycin C Degradation

Applied Biochemistry and Biotechnology, 2013
Cephamycin 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, Liliane M, Oliveira, Marlei, Barboza   +2 more
openaire   +2 more sources

Degradation kinetics of glucosinolates in soil

Environmental Toxicology and Chemistry, 2006
Abstract 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, Sørensen, Jens Christian, Tovgaard, Line, Jørgensen, Anne Marie Friis, Hansen, Hans Christian Bruun   +4 more
openaire   +2 more sources

Kinetics of enzymatic degradation of cyanide

Biotechnology and Bioengineering, 1992
AbstractCYANIDASE@ 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, O M, Kut, J E, Prenosil, J R, Bourne   +3 more
openaire   +2 more sources

Degradation kinetics of VX

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.
openaire   +1 more source

Degradation kinetics of metronidazole in solution

Journal of Pharmaceutical Sciences, 1993
The 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
openaire   +2 more sources

Nefopam Hydrochloride Degradation Kinetics in Solution

Journal of Pharmaceutical Sciences, 1990
A 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
openaire   +2 more sources