Search Results - "Wahl, Jon H"

Identification of Major Histocompatibility Complex-Regulated Body Odorants by Statistical Analysis of a Comparative Gas Chromatography/Mass Spectrometry Experiment by Willse, Alan, Belcher, Anne M, Preti, George, Wahl, Jon H, Thresher, Miranda, Yang, Peter, Yamazaki, Kunio, Beauchamp, Gary K

“…This paper examines the application of gas chromatography/mass spectrometry (GC/MS) in a comparative experiment to identify volatile compounds from urine that…”
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Capillary Electrophoresis/Mass Spectrometry by Smith, Richard D, Wahl, Jon H, Goodlett, David R, Hofstadler, Steven A

“…The hallmarks of GC/MS are its speed, selectivity, and sensitivity. Unfortunately, however, both GC and the conventional ionization methods used in MS require…”
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Impurity Profiling of a Chemical Weapon Precursor for Possible Forensic Signatures by Comprehensive Two-Dimensional Gas Chromatography/Mass Spectrometry and Chemometrics by Hoggard, Jamin C, Wahl, Jon H, Synovec, Robert E, Mong, Gary M, Fraga, Carlos G

“…In this report we present the feasibility of using analytical and chemometric methodologies to reveal and exploit the chemical impurity profiles from…”
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Harvest Initiated Volatile Organic Compound Emissions from In-Field Tall Wheatgrass by Vandergrift, Gregory W., Bell, Sheryl L., Schrader, Shannon E., Jensen, Sonja M., Wahl, Jon H., Tagestad, Jerry D., China, Swarup, Hofmockel, Kirsten S.

“…While crop and grassland usage continues to increase, the full diversity of plant-specific volatile organic compounds (VOCs) emitted from these ecosystems,…”
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On-matrix derivatization for dynamic headspace sampling of nonvolatile surface residues by Harvey, Scott D., Wahl, Jon H.

“…► On-matrix derivatization developed for dynamic headspace sampling. ► Targeted analytes were chemical warfare hydrolysis products and amines. ► Substrates…”
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Integration of stable isotope and trace contaminant concentration for enhanced forensic acetone discrimination by Moran, James J., Ehrhardt, Christopher J., Wahl, Jon H., Kreuzer, Helen W., Wahl, Karen L.

“…We analyzed 21 neat acetone samples from 15 different suppliers to demonstrate the utility of a coupled stable isotope and trace contaminant strategy for…”
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Preliminary effects of real-world factors on the recovery and exploitation of forensic impurity profiles of a nerve-agent simulant from office media by Fraga, Carlos G., Sego, Landon H., Hoggard, Jamin C., Acosta, Gabriel A. Pérez, Viglino, Emilie A., Wahl, Jon H., Synovec, Robert E.

“…► Impurity profiling works even after chemical is disseminated into the environment. ► Selectivity is a useful measure of impurity-profile forensic value. ►…”
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Extraction of chemical impurities for forensic investigations: A case study for indoor releases of a sarin surrogate by Wahl, Jon H., Colburn, Heather A.

“…A solvent extraction approach was developed and examined for extraction of targeted organophosphorus compounds as well as nerve agent simulants from painted…”
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Profiling of volatile impurities in tetramethylenedisulfotetramine (TETS) for synthetic-route determination by Fraga, Carlos G, Wahl, Jon H, Núñez, Stefanie P

“…Abstract This study investigated the feasibility of using volatile impurities from the rodenticide tetramethylenedisulfotetramine (TETS) for the discrimination…”
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Integration of gas chromatography mass spectrometry methods for differentiating ricin preparation methods by Wunschel, David S, Melville, Angela M, Ehrhardt, Christopher J, Colburn, Heather A, Victry, Kristin D, Antolick, Kathryn C, Wahl, Jon H, Wahl, Karen L

“…The investigation of crimes involving chemical or biological agents is infrequent, but presents unique analytical challenges. The protein toxin ricin is…”
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Individual odortypes: interaction of MHC and background genes by Willse, Alan, Kwak, Jae, Yamazaki, Kunio, Preti, George, Wahl, Jon H, Beauchamp, Gary K

“…Genes of the major histocompatibility complex (MHC) influence the urinary odors of mice. Behavioral studies have shown (1) that mice differing only at MHC have…”
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Multiple Stable Isotope Characterization as a Forensic Tool to Distinguish Acid Scavenger Samples by Moran, James J., Kreuzer, Helen W., Carman, April J., Wahl, Jon H., Duckworth, Douglas C.

“…:  Acid scavengers are frequently used as stabilizer compounds in a variety of applications. When used to stabilize volatile compounds such as nerve agents,…”
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Detection of agar, by analysis of sugar markers, associated with Bacillus anthracis spores, after culture by Wunschel, David S., Colburn, Heather A., Fox, Alvin, Fox, Karen F., Harley, William M., Wahl, Jon H., Wahl, Karen L.

“…Detection of small quantities of agar associated with spores of Bacillus anthracis could provide key information regarding its source or growth…”
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Detection of Acetone Processing of Castor Bean Mash for Forensic Investigation of Ricin Preparation Methods by Kreuzer, Helen W., Wahl, Jon H., Metoyer, Candace N., Colburn, Heather A., Wahl, Karen L.

“…:  Samples containing the toxic castor bean protein ricin have been recently seized in connection with biocriminal activity. Analytical methods that enable…”
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Direct surface analysis of fungal species by matrix-assisted laser desorption/ionization mass spectrometry by Valentine, Nancy B., Wahl, Jon H., Kingsley, Mark T., Wahl, Karen L.

“…In this study various methods of sample preparation and matrices were investigated to determine optimum collection and analysis criteria for fungal analysis by…”
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Individual odortypes: interaction of MHC and background genes by Willse, Alan, Kwak, Jae, Yamazaki, Kunio, Preti, George, Wahl, Jon H., Beauchamp, Gary K.

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Capillary electrophoresis/mass spectrometry by Smith, Richard D, Wahl, Jon H, Goodlett, David R, Hofstadler, Steven A

“…Many scientific problems can only be solved by combining on-line separation methods with mass spectrometry (MS). The combining of MS with capillary…”
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Attomole level capillary electrophoresis-mass spectrometric protein analysis using 5 .mu.m i.d. capillaries by Wahl, Jon H, Goodlett, David R, Udseth, Harold R, Smith, Richard D

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A portable multi-dimensional gas chromatographic system for field applications by Wahl, Jon H., Riechers, Douglas M., Vucelick, Mark E., Wright, Bob W.

“…We have constructed and tested a multi‐dimensional gas chromatographic system that can be utilized for field portable applications. The chromatographic system…”
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Characterization of plasma membrane proteins from ovarian cancer cells using mass spectrometry by Springer, David L, Auberry, Deanna L, Ahram, Mamoun, Adkins, Joshua N, Feldhaus, Jane M, Wahl, Jon H, Wunschel, David S, Rodland, Karin D

“…To determine how the repertoire of plasma membrane proteins change with disease state, specifically related to cancer, several methods for preparation of…”
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