Results 211 to 220 of about 231,063 (267)

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
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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
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The kinetics of the alkaline degradation of daptomycin

Journal of Pharmaceutical Sciences, 2001
The aqueous degradation of daptomycin, a lipopeptide antibiotic, was investigated as a function of substrate concentration (0.5-10.0 mM), pH (9.0-10.5), buffer concentration (0.06-0.20 M borate, glycinate, or carbonate buffers), temperature (20-50 degrees C), and ionic strength (0.1-0.8).
W, Muangsiri, L E, Kirsch
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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
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Kinetics of Degradation of Biapenem

International Journal of Chemical Kinetics, 2014
ABSTRACTThe kinetic and thermodynamic analysis of biapenem degradation was conducted during acid–base hydrolysis, under the influence of buffer components and in the solid state at increased temperature (dry air) and relative air humidity (RH > 50%).
JUDYTA CIELECKA‐PIONTEK, PRZEMYSŁAW ZALEWSKI, PIOTR GARBACKI, EWELINA JURA, ALICJA TALACZYŃSKA   +4 more
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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
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KINETICS OF TRITHIONATE DEGRADATION

Canadian Metallurgical Quarterly, 2006
Abstract Thiosulfate has shown promise as an alternative to cyanide for gold leaching. However, one of the limitations is high thiosulfate consumption. Thiosulfate degradation is not completely understood. Of the degradation products, trithionate is a concern in the resin recovery of gold and is persistent in solution.
N. AHERN, D. DREISINGER, G. VAN WEERT
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Degradation Kinetics of Neostigmine in Solution

Drug Development and Industrial Pharmacy, 2000
The degradation kinetics of neostigmine were studied in aqueous solutions with varied pH from 1.5 to 9.9 under accelerated storage conditions. The stability of neostigmine in solutions containing propylene glycol or polyethylene glycol 400 was also investigated.
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Kinetics of polymer degradation

Macromolecules, 1986
Equations cinetiques pour trouver des solutions explicites aux modeles discrets et en continu de fragmentation pour deux classes de modeles de probabilite de scission ...
Robert M. Ziff, E. D. McGrady
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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
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