J
James A. Zahn
Researcher at DuPont
Publications - 49
Citations - 2367
James A. Zahn is an academic researcher from DuPont. The author has contributed to research in topics: Methylococcus capsulatus & Methane monooxygenase. The author has an hindex of 25, co-authored 48 publications receiving 2241 citations. Previous affiliations of James A. Zahn include Dow Chemical Company & Agricultural Research Service.
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Journal ArticleDOI
Membrane-associated methane monooxygenase from Methylococcus capsulatus (Bath).
James A. Zahn,A A DiSpirito +1 more
TL;DR: An active preparation of the membrane-associated methane monooxygenase (pMMO) from Methylococcus capsulatus Bath was isolated by ion-exchange and hydrophobic interaction chromatography using dodecyl beta-D-maltoside as the detergent.
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Characterization of volatile organic emissions and wastes from a swine production facility
TL;DR: In this article, an analytical method for monitoring the volatile organic compound (VOC) emissions, for defining atmospheric transport coefficients, and for monitoring solution phase chemistry have been developed to define processes regulating emission of malodorous and other VOCs from a high odor swine production facility.
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The membrane-associated methane monooxygenase (pMMO) and pMMO-NADH:quinone oxidoreductase complex from Methylococcus capsulatus bath
Dong W. Choi,Ryan C. Kunz,Eric S. Boyd,Jeremy D. Semrau,William E. Antholine,Jong-In Han,James A. Zahn,James A. Zahn,Jeffrey M. Boyd,Arlene de la Mora,Alan A. DiSpirito +10 more
TL;DR: It is demonstrated that copper not only regulates the metabolic switch between the two methane monooxygenases but also regulates the level of expression of the pMMO and the development of internal membranes.
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Correlation of human olfactory responses to airborne concentrations of malodorous volatile organic compounds emitted from swine effluent.
James A. Zahn,Alan A. DiSpirito,Young S. Do,Brian E. Brooks,Eric E. Cooper,Jerry L. Hatfield +5 more
TL;DR: Results of this study show that direct multicomponent analysis of VOCs emitted from swine effluent can be applied toward estimating perceived odor intensity.
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Bias of Tedlar Bags in the Measurement of Agricultural Odorants
TL;DR: Results indicate that significant odorant bias occurs when using Tedlar bags for the sampling of odors from animal production facilities.