Results 261 to 270 of about 1,920,414 (308)

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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Degradation methods and degradation kinetics of polymer films

Polymer Degradation and Stability, 1994
Abstract 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, J.M. Mayer, M. Greenberger, R. Gross, S. McCarthy   +4 more
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Kinetics of diesel degradation by an acrylamide-degrading bacterium

Rendiconti Lincei, 2014
In this work, we characterized a novel acrylamide-degrading bacterium with the ability to degrade diesel. Tentatively, the isolate was identified as Burkholderia sp. strain DRY27 and was shown to have increased growth rate on media supplemented with 0–3 % (v/v) diesel.
Ahmad, Siti Aqlima, Ku Ahamad, Ku Nurul Ezreen, Wan Johari, Wan Lutfi, Halmi, Mohd Izuan Effendi, Abd. Shukor, Mohd Yunus, Yusof, Mohd Termizi   +5 more
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Stereoselective degradation kinetics of tebuconazole in rabbits

Chirality, 2006
AbstractTebuconazole[(RS)‐1‐p‐chlorophenyl‐4,4‐dimethyl‐3‐(1H‐1,2,4‐triazol‐1‐ylmethyl)pentan‐3‐ol] is a potent triazole fungicide and consists of a pair of enantiomers. The enantioselective degradation kinetics of tebuconazole was investigated in rabbits by intravenous (iv) injection. The concentrations of (−)‐(R)‐tebuconazole and (+)‐(S)‐tebuconazole
Wentao, Zhu, Jing, Qiu, Ziheng, Dang, Chunguang, Lv, Guifang, Jia, Li, Li, Zhiqiang, Zhou   +6 more
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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.
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Degradation Kinetics of Gonadorelin in Aqueous Solution

Journal of Pharmaceutical Sciences, 1996
The degradation kinetics of gonadorelin were investigated systematically with reversed-phase high-performance liquid chromatography. The stability-indicating properties of this system were checked with photodiode array detection and by comparison with capillary zone electrophoretic analysis.
Hoitink, M.A., Beijnen, J.H., Bult, A., van der Houwen, O.A.G.J., Nijholt, J., Underberg, W.J.M.   +5 more
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Microbial Degradation Kinetics of Polyphenanthrene Phenanthrene

Proceedings of the 2019 9th International Conference on Biomedical Engineering and Technology, 2019
Isolation of oil degrading strains from oil spill Beach Pseudomonas sp, Polyphenanthrene (PAHs) phenanthrene is used as a model for degradation research. The degradation of phenanthrene accords with first-order kinetics. When the concentration of phenanthrene is low, the degradation kinetics of both free and immobilized strains conformed to the linear ...
Bingbing Liu, Mingyu Wang, Linghao Bian, Junsheng Meng, Deyu Li   +4 more
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Modeling the degradation kinetics of ascorbic acid

Critical Reviews in Food Science and Nutrition, 2017
Most published reports on ascorbic acid (AA) degradation during food storage and heat preservation suggest that it follows first-order kinetics. Deviations from this pattern include Weibullian decay, and exponential drop approaching finite nonzero retention.
Micha, Peleg, Mark D, Normand, William R, Dixon, Timothy R, Goulette   +3 more
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Degradation Kinetics of Phentolamine Hydrochloride in Solution

Journal of Pharmaceutical Sciences, 1988
The degradation kinetics of phentolamine hydrochloride in aqueous solution over a pH range of 1.2 to 7.2 and its stability in propylene glycol- or polyethylene glycol 400-based solutions were investigated. The observed rate constants were shown to follow apparent first-order kinetics in all cases.
D P, Wang, Y H, Tu, L V, Allen
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Degradation Kinetics of Somatostatin in Aqueous Solution

Drug Development and Industrial Pharmacy, 2003
The degradation kinetics of somatostatin (somatotropin release inhibiting factor), a cyclic tetradecapeptide, was investigated as a function of temperature, pH, ionic strength, buffer type, and buffer concentration. In addition, the effect of different container materials in which the solutions were stored and the presence of an antimicrobial agent for
Joachim, Herrmann, Roland, Bodmeier
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