Výsledky vyhledávání - "W. B. Wheeler"

Oxytetracycline, Sulfadimethoxine, and Ormetoprim Residues in Channel Catfish by HPLC

Autor: M.R. Marshall, D.-H. Xu, S.D. Rawles, W. B. Wheeler, W.A. Rodgers, Wen-Xian Du, M. Mathews, Delbert M. Gatlin, Cheng-I Wei

Publikováno v: Journal of Food Science. 60:1220-1224

HPLC methods and modified extraction procedures were used to analyze residues of oxytetracycline (Terramycin, OTC) or sulfadimethoxine (SDM) and ormetoprim (OMP) in channel catfish fed OTC or Romet-30 under controlled conditions. Mean recovery rates

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6722952d2927b243f29e1bb247632ae9
https://doi.org/10.1111/j.1365-2621.1995.tb04560.x

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Mutagenicity and Identification of the Reaction Products of Aqueous Chlorine or Chlorine Dioxide with L-Tryptophan

Autor: Cheng-I Wei, W. B. Wheeler, J. Owusu-Yaw, J.P. Toth

Publikováno v: Journal of Food Science. 55:1714-1719

Nonvolatile products generated from reactions of graded molar ratios of aqueous chlorine or chlorine dioxide with L-tryptophan (1:1, 3:1 and 7:1) were shown to be direct-acting mutagens to Salmonella typhimurium TA100 and TA98. Increasing the ratio o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::90236867482a66d9a8b69a1b31d5ea23
https://doi.org/10.1111/j.1365-2621.1990.tb03607.x

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Insect Control and Chemical Residues from Organophosphates and Synthetic Pyrethroids Applied Alone or in Tank Mixes on Flue-Cured Tobacco1

Autor: J. R. Rich, W. B. Tappan, W. B. Wheeler, J. T. Johnson

Publikováno v: Journal of Economic Entomology. 75:1143-1146

Tank mix sprays of fenvalerate or permethrin with acephate or encapsulated methyl parathion were compared with sprays of the compounds alone for control of the green peach aphid, Myzus persicae (Sulzer), tobacco budworm, Heliothis virescens (F.), and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::22fa8dca0336809942ee64693c8006a5
https://doi.org/10.1093/jee/75.6.1143

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LEACHING LOSSES OF TWO NUTRIENTS AND AN HERBICIDE FROM TWO SANDY SOILS DURING TRANSIENT DRAINAGE

Autor: D. V. Calvert, W. B. Wheeler, R. S. Mansell

Publikováno v: Soil Science. 130:140-150

Shallow-tilled (ST) and deep-tilled (DT) plots of an acid, sandy soil were used to measure changes in potassium, nitrogen nitrates, and Terbacil concentrations in subsurface drainage water from the plots. Fertilizer and Terbacil herbicide was applied

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::34715021494b02a44b71a859b6a5e402
https://doi.org/10.1097/00010694-198009000-00005

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Reactions Involving HOCl or ClO2 with Fatty Acids Under Aqueous Conditions and Mutagenicity of Reaction Products

Autor: H. A. Ghanbari, Cheng-I Wei, A.C. Sen, J. R. Kirk, M.F. Fukayama, W. B. Wheeler

Publikováno v: Canadian Institute of Food Science and Technology Journal. 20:19-24

Reactions involving aqueous chlorine and chlorine dioxide with oleic acid, linoleic acid, linolenic acid, arachidonic acid, their methyl esters, and triolein were examined. Aqueous chlorine was found to be more reactive than chlorine dioxide with res

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::24d1308e64fa7934627acab6f9510ba6
https://doi.org/10.1016/s0315-5463(87)70664-6

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The Effect of High 2,4‐D Concentrations on Degradation and Carbon Dioxide Evolution in Soils

Autor: W. B. Wheeler, J. M. Davidson, Li-Tse Ou, D. F. Rothwell

Publikováno v: Journal of Environmental Quality. 7:241-246

A laboratory experiment was conducted to determine the degradation of high concentrations of 2,4-D (2,4-dichlorophenoxyacetic acid) and CO₂ evolution in three soils. Two forms of 2,4-D, technical grade and formulated, were added to each soil at rat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1a9c5513498645e9beae4cdc2ad00068
https://doi.org/10.2134/jeq1978.00472425000700020018x

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Isolation of a methyl parathion-degrading Pseudomonas sp. that possesses DNA homologous to the opd gene from a Flavobacterium sp

Autor: G R Chaudhry, W. B. Wheeler, Afsar Ali

Publikováno v: Applied and Environmental Microbiology. 54:288-293

Two mixed bacterial cultures isolated by soil enrichment were capable of utilizing methyl parathion (O,O-dimethyl O-p-nitrophenylphosphorothioate) and parathion (O,O-diethyl O-p-nitrophenylphosphorothioate) as a sole source of carbon. Four isolates f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::708b5e143d185faa4f9dc6c8b059a695
https://doi.org/10.1128/aem.54.2.288-293.1988

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Reactions of Aqueous Chlorine and Chlorine Dioxide with Tryptophan, N-Methyltryptophan, and 3-Indolelactic Acid: Kinetic and Mutagenicity Studies

Autor: A. C. Sen, J. Owusu-Yaw, Cheng-I Wei, W. B. Wheeler

Publikováno v: Journal of Food Science. 54:1057-1060

Reactions of tryptophan, N-methyltryptophan and 3-indolelactic acid with aqueous chlorine or chlorine dioxide (ClO2) in 0.1M potassium phosphate buffer, pH 6.0, were investigated to determine any structural relationships with regards to kinetics and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dfa85c5cc9a56504e4bcce0a03f7eec4
https://doi.org/10.1111/j.1365-2621.1989.tb07942.x

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