Search Results - "Silva, Philip J"

Microbiome Diversity of Anaerobic Digesters Is Enhanced by Microaeration and Low Frequency Sound by Loughrin, John H., Parekh, Rohan R., Agga, Getahun E., Silva, Philip J., Sistani, Karamat R.

“…Biogas is produced by a consortium of bacteria and archaea. We studied how the microbiome of poultry litter digestate was affected by time and treatments that…”
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Pilot-Scale H2S and Swine Odor Removal System Using Commercially Available Biochar by Ro, Kyoung S., Woodbury, Bryan, Spiehs, Mindy, Szogi, Ariel A., Silva, Philip J., Hwang, Okhwa, Cho, Sungback

“…Although biochars made in laboratory seem to remove H2S and odorous compounds effectively, very few studies are available for commercial biochars. This study…”
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Characterization of Particle Size Distributions and Water-Soluble Ions in Particulate Matter Measured at a Broiler Farm by Silva, Philip J., Cress, Tanner, Drover, Ryan, Michael, Cara, Docekal, Gregory, Larkin, Pierce, Godoy, Antonio, Cavero, Devin A., Sin, Crystal, Waites, Janise, Mahmood, Rezaul, Cohron, Martin, Purvis-Roberts, Kathleen L.

“…The chemical composition and size distribution of particulate matter produced at broiler poultry houses is not well understood, so this is a novel study to…”
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Chase Studies of Particulate Emissions from in-use New York City Vehicles by Canagaratna, Manjula R., Jayne, John T., Ghertner, David A., Herndon, Scott, Shi, Quan, Jimenez, Jose L., Silva, Philip J., Williams, Paul, Lanni, Thomas, Drewnick, Frank, Demerjian, Kenneth L., Kolb, Charles E., Worsnop, Douglas R.

“…Emissions from motor vehicles are a significant source of fine particulate matter (PM) and gaseous pollutants in urban environments. Few studies have…”
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Size and Chemical Characterization of Individual Particles Resulting from Biomass Burning of Local Southern California Species by Silva, Philip J, Liu, Don-Yuan, Noble, Christopher A, Prather, Kimberly A

“…The chemical composition and size of individual particles derived from combustion products of several species found in Southern California were obtained using…”
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Relative Sensitivity Factors for Alkali Metal and Ammonium Cations in Single-Particle Aerosol Time-of-Flight Mass Spectra by Gross, Deborah S, Gälli, Markus E, Silva, Philip J, Prather, Kimberly A

“…A variety of factors have been investigated with regard to the quantitation of chemical species within individual ambient aerosol particles analyzed by laser…”
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Detection of Extended-Spectrum Beta-Lactamase-Producing and Carbapenem-Resistant Bacteria from Mink Feces and Feed in the United States by Agga, Getahun E, Silva, Philip J, Martin, Randal S

“…Antibiotic-resistant infections caused by extended-spectrum β-lactamases (ESBLs) and carbapenemases are increasing worldwide. Bacteria resistant to…”
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Prevalence, Serotypes, and Antimicrobial Resistance of Salmonella from Mink Feces and Feed in the United States by Agga, Getahun E, Silva, Philip J, Martin, Randal S

“…Nontyphoidal is a leading cause of foodborne illnesses, and concentrated animal production such as commercial mink farming can be a reservoir. The objective of…”
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Effects of temperature on the formation of secondary organic aerosol from amine precursors by Price, Derek J., Kacarab, Mary, Cocker, David R., Purvis-Roberts, Kathleen L., Silva, Philip J.

“…Aerosol formation is directly influenced by meteorological properties such as temperature and relative humidity. This study examines the influence of…”
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Efficacy of Different Biochars in Removing Odorous Volatile Organic Compounds (VOCs) Emitted from Swine Manure by Hwang, Okhwa, Lee, Sang-Ryong, Cho, Sungback, Ro, Kyoung S, Spiehs, Mindy, Woodbury, Bryan, Silva, Philip J, Han, Deug-Woo, Choi, Heechul, Kim, Ki-Yong, Jung, Min-Woong

“…The potential of various biochars to remove 15 odorous volatile organic compounds emitted from swine manure were investigated via laboratory sorption…”
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NO3 radical, OH radical and O3-initiated secondary aerosol formation from aliphatic amines by Tang, Xiaochen, Price, Derek, Praske, Eric, Lee, Su Anne, Shattuck, Morgan A., Purvis-Roberts, Kathleen, Silva, Philip J., Asa-Awuku, Akua, Cocker, David R.

“…Aliphatic amines enter the atmosphere from a variety of sources, and exist in both gas and particle phases in the atmosphere. Similar to ammonia, amines can…”
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On-Line Characterization of Individual Particles from Automobile Emissions by Silva, Philip J, Prather, Kimberly A

“…This paper presents results from a study showing the first on-line measurement of the size and chemical composition of individual particles emitted in…”
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Proposed chemical mechanisms leading to secondary organic aerosol in the reactions of aliphatic amines with hydroxyl and nitrate radicals by Price, Derek J., Clark, Christopher H., Tang, Xiaochen, Cocker, David R., Purvis-Roberts, Kathleen L., Silva, Philip J.

“…The presence and importance of amines in the atmosphere, including aliphatic amines, continues to gain more attention. The atmospheric reaction mechanisms of…”
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Meteorological and environmental aspects of one of the worst national air pollution episodes (January, 2004) in Logan, Cache Valley, Utah, USA by Malek, Esmaiel, Davis, Tess, Martin, Randal S., Silva, Philip J.

“…Logan, Utah, USA, had the nation's worst air pollution on 15 January, 2004. The high concentration of PM 2.5 (particulates smaller than 2.5 μm in diameter) in…”
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Trimethylamine as Precursor to Secondary Organic Aerosol Formation via Nitrate Radical Reaction in the Atmosphere by Silva, Philip J, Erupe, Mark E, Price, Derek, Elias, John, G. J. Malloy, Quentin, Li, Qi, Warren, Bethany, Cocker, David R

“…Amines in fine particulate matter have been detected and quantified during ambient studies of winter inversions in Logan, UT, using aerosol mass spectrometry…”
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Fine particle concentrations and composition during wintertime inversions in Logan, Utah, USA by Silva, Philip J., Vawdrey, Eric L., Corbett, Misty, Erupe, Mark

“…During Winter 2004, a series of elevated PM 2.5 events occurred in Logan, Utah, coinciding with strong winter inversions. This period resulted in 17…”
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Interpretation of Mass Spectra from Organic Compounds in Aerosol Time-of-Flight Mass Spectrometry by Silva, Philip J, Prather, Kimberly A

“…Organic compounds containing a variety of functional groups have been analyzed using aerosol time-of-flight mass spectrometry. Both positive and negative laser…”
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Determination of methylamines and trimethylamine- N-oxide in particulate matter by non-suppressed ion chromatography by Erupe, Mark E., Liberman-Martin, Allegra, Silva, Philip J., Malloy, Quentin G.J., Yonis, Naomi, Cocker, David R., Purvis-Roberts, Kathleen L.

“…An ion chromatography method with non-suppressed conductivity detection was developed for the simultaneous determination of methylamines (methylamine,…”
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Direct evidence for chlorine-enhanced urban ozone formation in Houston, Texas by Tanaka, Paul L, Riemer, Daniel D, Chang, Sunghye, Yarwood, Greg, McDonald-Buller, Elena C, Apel, Eric C, Orlando, John J, Silva, Philip J, Jimenez, Jose L, Canagaratna, Manjula R, Neece, James D, Mullins, C.Buddie, Allen, David T

“…Urban air pollution is characterized by high ozone levels, formed when volatile organic compounds (VOCs) are oxidized in the presence of nitrogen oxides (NO x…”
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Particle composition and size distributions in and around a deep-pit swine operation, Ames, IA by Martin, Randal S., Silva, Philip J., Moore, Kori, Erupe, Mark, Doshi, Vishal S.

“…The contribution of emissions from agricultural facilities is rapidly becoming a major concern for local and regional air quality. Characterization of particle…”
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