EPA Science Inventory

Science Inventory Search Results

Records 1 to 100 of 172

2016
Andrady, A., P. Aucamp, A. Austin, A. Bias, C. Ballare, P. Barnes, G. Bernhard, L. Bjorn, J. Bornman, D. Erickson, F. de Gruijl, D. Hader, M. Ilyas, J. Longstreth, R. Lucas, S. Madronich, R. McKenzie, R. Neale, M. Norval, K. Pandey, N. Paul, H. Redhwi, S. Robinson, K. Rose, M. Shao, R. Sinha, K. Solomon, B. Sulzberger, Y. Takizawa, A. Torikai, K. Tourpali, C. Williamson, S. Wilson, S. Wangberg, R. Worrest, A. Young, AND R. Zepp. Environmental effects of ozone depletion and its interactions with climate change: progress report, 2015. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, 15(2):141-174, (2016).
Zepp, R., G. Whelan, M. Molina, Mike Cyterski, K. Wong, B. Acrey, AND A. Commodore. Impacts of Tributaries on Optical Properties and Singlet Oxygen Concentrations in the Great Lakes. 251st American Chemical Society National Meeting & Exposition, San Diego, CA, March 13 - 17, 2016.
Hou, W., C. He, Y. Wang, D. Wang, AND R. Zepp. Phototransformation-Induced Aggregation of Functionalized Single-Walled Carbon Nanotubes: The Importance of Amorphous Carbon. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 50(7):3494–3502, (2016).
Zepp, R., D. Bouchard, E. Sahle-Demessie, W. Wohlleben, S. Vazquez-Campos, J. Carter, C. Kingston, R. Canady, B. Acrey, AND C. Chen. Pilot Inter-Laboratory Studies for Evaluating Weathering-Induced Release of Carbon Nanotubes from Solid Matrices. Nanotech 2016, Washington, DC, May 22 - 26, 2016.
Zepp, R., Mike Cyterski, M. Molina, C. Fitzgerald, G. Whelan, R. Parmar, K. Wolfe, AND M. Galvin. Predictive Modeling of Microbial Indicators for Timely Beach Notifications and Advisories at Marine Beaches. 2016 Recreational Waters Conference, New Orleans, LA, April 12 - 15, 2016.
Zepp, R., M. Molina, Mike Cyterski, G. Whelan, R. Parmar, K. Wong, B. Acrey, AND R. Georgacopoulous. Process Relationships for Evaluating the Role of Light-induced Inactivation of Coliphages at Selected Beaches and Nearby Tributaries of the Great Lakes. 2016 Recreational Waters Conference, New Orleans, LA, April 12 - 15, 2016.
2015
Henderson, Matt, I. Chowdhury, W. Hou, X. Chang, S. Martin, R. Zepp, AND D. Bouchard. Assessing the exposure and toxicological implications of environmental transformations of graphene oxide using in vitro methods. 250th American Chemical Society National Meeting & Exposition, Boston, MA, August 16 - 20, 2015.
Erickson, D., B. Sulzberger, R. Zepp, AND A. Austin. Effects of Stratospheric Ozone Depletion, Solar UV Radiation, and Climate Change on Biogeochemical Cycling: Interactions and Feedbacks. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, 14(1):127-148, (2015).
Whelan, G., M. Pelton, M. Molina, R. Zepp, J. Ravenscroft, AND Y. Pachepsky. Microbial Properties Database Editor Tutorial. US EPA Office of Research and Development, Washington, DC, EPA/600/B-15/275, 2015.
Hou, W., I. Chowdhury, D. Goodwin, Matt Henderson, D. Fairbrother, D. Bouchard, AND R. Zepp. Photochemical Transformation of Graphene Oxide in Sunlight. ENVIRONMENTAL SCIENCE AND TECHNOLOGY. John Wiley & Sons, Ltd., Indianapolis, IN, 49(6):3435-3443, (2015).
Hou, W., I. Chowdhury, D. Goodwin, Matt Henderson, D. Fairbrother, D. Bouchard, AND R. Zepp. Photochemical transformation of graphene oxide in sunlight (journal). ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 49(6):3435-3443, (2015).
Barnes, B., P. Hallock, C. Hu, F. Muller-Karger, D. Palandro, C. Walter, AND R. Zepp. Prediction of Coral Bleaching in the Florida Keys Using Remotely Sensed Data. CORAL REEFS. Springer, New York, NY, 34(2):491-503, (2015).
Chen, C. AND R. Zepp. Probing Photosensitization by Functionalized Carbon Nanotubes. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 49(23):13835-13843, (2015).
Whelan, G., K. Wolfe, R. Parmar, M. Galvin, M. Molina, R. Zepp, K. Kim, M. Gray, AND P. Duda. Quantitative Microbial Risk Assessment Tutorial: Land-applied Microbial Loadings within a 12-Digit HUC. US EPA Office of Research and Development, Washington, DC, EPA/600/B-15/298, 2015.
Whelan, G., K. Wolfe, R. Parmar, M. Galvin, M. Molina, R. Zepp, AND K. Kim. Quantitative Microbial Risk Assessment Tutorial: Navigate the SDMPB and Identify an 8-digit HUC of Interest. US EPA Office of Research and Development, Washington, DC, EPA/600/B-15/273, 2015.
Whelan, G., K. Wolfe, R. Parmar, M. Galvin, M. Molina, R. Zepp, M. Gray, P. Duda, AND K. Kim. Quantitative Microbial Risk Assessment Tutorial: Pour Point Analysis of Land-applied Microbial Loadings and Comparison of Simulated and Gaging Station Results. US EPA Office of Research and Development, Washington, DC, EPA/600/B-15/290, 2015.
Whelan, G., K. Wolfe, R. Parmar, M. Galvin, M. Molina, R. Zepp, M. Gray, P. Duda, AND K. Kim. Quantitative Microbial Risk Assessment Tutorial: Using NLDAS and NCDC Meteorological Data. US EPA Office of Research and Development, Washington, DC, EPA/600/B-15/299, 2015.
Oladeinde, A., E. Lipp, C. Chen, R. Zepp, AND M. Molina. Re-growth of fecal indicator bacteria and Escherichia coli 0157:H7 B6914 in cow fecal extract. International Symposium on Waterborne Pathogens, Savannah, GA, April 13 - 14, 2015.
Chowdhury, I., W. Hou, D. Goodwin, Matt Henderson, R. Zepp, AND D. Bouchard. Sunlight affects aggregation and deposition of graphene oxide in the aquatic environment. WATER RESEARCH. Elsevier Science Ltd, New York, NY, 78(1):37-46, (2015).
Zepp, R., D. Bouchard, W. Hou, Chris Knightes, Matt Henderson, I. Chowdhury, C. Chen, H. Fairbrother, D. Goodwin, AND L. Kong. Sunlight-induced Transformations of Graphene-based Nanomaterials in Aquatic Environments. ACS National Meeting & Exposition, Boston, MA, August 17 - 20, 2015.
2014
Whelan, G., K. Kim, M. Pelton, J. Soller, K. Castleton, M. Molina, Y. Pachepsky, AND R. Zepp. An integrated environmental modeling framework for performing Quantitative Microbial Risk Assessments. ENVIRONMENTAL MODELLING & SOFTWARE. Elsevier Science, New York, NY, 55:77-91, (2014).
Molina, M., Mike Cyterski, G. Whelan, AND R. Zepp. Comparing Data Input Requirements of Statistical vs. Process-based Watershed Models Applied for Prediction of Fecal Indicator and Pathogen Levels in Recreational Beaches. Presented at AGU Fall Meeting, San Francisco, CA, December 15 - 19, 2014.
Hou, W., I. Chowdhury, D. Goodwin, Matt Henderson, H. Fairbrother, D. Bouchard, AND R. Zepp. Direct and Indirect Phototransformation of Graphene Oxide in Sunlight. Presented at 248th National Meeting of the American Chemical Society, San Francisco, CA, August 11 - 14, 2014.
Zepp, R., O. Okungbowa, A. Andrady, J. Locklin, AND R. Arnold. Influence of Pro-Oxidant on Photodegradation of a Low-Density Polyethylene-Nanosilica Composite. Presented at Nanotech 2014, Washington, DC, June 15 - 18, 2014.
Zepp, R., Mike Cyterski, K. Kisselle, A. Kozovits, AND M. Bustamante. Photoproduction of Carbon Monoxide from Natural Organic Matter. Presented at 248th ACS National Meeting, San Francisco, CA, August 11 - 14, 2014.
Kingston, C., R. Zepp, A. Andrady, D. Boverhof, R. Fehir, D. Hawkins, J. Roberts, P. Sayre, B. Shelton, Y. Sultan, V. Vejins, AND W. Wohlleben. Release characteristics of selected carbon nanotube polymer composites. CARBON. Pergamon Press Ltd., New York, NY, 68:33-57, (2014).
Chen, C. AND R. Zepp. Solar light-induced production of reactive oxygen species by single walled carbon nanotubes in water. Presented at Gordon Research Conference, Environmental Sciences: Water, Holderness, NH, June 21 - 27, 2014.
Williamson, C., R. Zepp, R. Lucas, S. Madronich, A. Austin, C. Ballare, M. Norval, B. Sulzberger, A. Bais, R. McKenzie, S. Robinson, D. Hader, N. Paul, AND J. Bornman. Solar ultraviolet radiation in a changing climate. Nature Climate Change. Nature Publishing Group, New York, NY, 4(6):434-441, (2014).
Whelan, G., K. Kim, R. Parmar, K. Wolfe, M. Galvin, P. Duda, M. Gray, M. Molina, R. Zepp, Y. Pachepsky, J. Ravenscroft, L. Prieto, AND B. Kitchens. Using Integrated Environmental Modeling to Automate a Process-Based Quantitative Microbial Risk Assessment (presentation). Presented at International Environmental Modelling and Software Society (iEMSs), San Diego, CA, June 15 - 19, 2014.
Whelan, G., K. Kim, R. Parmar, K. Wolfe, M. Galvin, P. Duda, M. Gray, M. Molina, R. Zepp, Y. Pachepsky, J. Ravenscroft, L. Prieto, AND B. Kitchens. Using integrated environmental modeling to automate a process-based Quantitative Microbial Risk Assessment. In Proceedings, 7th International Congress on Environmental Modelling and Software (iEMSs), San Diego, CA, June 15 - 19, 2014. International Environmental Modelling and Software Society, Manno, Switzerland, 1500-1507, (2014).
2013
Beigzadeh-Milani, S., C. Jafvert, W. Hou, AND R. Zepp. Hydroxyl radical induced photo-transformation of single-walled carbon nanotubes in the aquatic environment. Presented at ACS 246th National Meeting, Indianapolis, IN, September 08 - 12, 2013.
Nowack, B., R. M. David, H. Fissan, H. Morris, J. Shatkin, M. Stintz, R. G. ZEPP, AND D. Brouwer. Potential release scenarios for carbon nanotubes used in composites. ENVIRONMENT INTERNATIONAL. Elsevier Science Ltd, New York, NY, 59:1-11, (2013).
Kong, L., B. Mukherjee, Y. F. Chan, AND R. G. ZEPP. Quenching and Sensitizing Fullerene Photoreactions by Natural Organic Matter. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 47(12):6189-6196, (2013).
Hou, W., B. Stuart, R. Howes, AND R. Zepp. Sunlight-Driven Reduction of Silver Ions by Natural Organic Matter: Formation and Transformation of Silver Nanoparticles. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 47(14):7713-7721, (2013).
Mukherjee, B., R. Gourishetty, W. Zhang, T. Powell, J. Weaver, R. Zepp, AND D. Bouchard. Uncoated and Polymer Coated Titanium Dioxide (TiO2)Nanoparticles: Differences in Deposition and Charge Characteristics. Presented at 2013 Spring Meeting & 9th Global Congress on Process Safety, San Antonio, TX, April 28 - May 02, 2013.
Martinez, G., Y. Pachepsky, D. Shelton, G. WHELAN, R. G. ZEPP, M. MOLINA, AND K. Panhorst. Using the Q10 model to simulate E. coli survival in cowpats on grazing lands. ENVIRONMENT INTERNATIONAL. Elsevier Science Ltd, New York, NY, 54:1-10, (2013).
2012
Wong, C., B. Mukherjee, T. Voice, I. Xagoraraki, R. Zepp, AND M. Molina. Influence of Inorganic Ions and Organic Matters on Surface Charge and Adsorption Behaviors of Human Adenovirus. Presented at Annual Southeastern Branch American Society of Microbiology Conference, Athens, GA, October 25 - 27, 2012.
Nowack, B., D. Brouwer, H. Fissan, M. Dahm, H. Morris, M. Voetz, T. Thomas, R. Zepp, R. David, J. Isaacs, L. Libelo, J. Shatkin, M. Miller, M. Stintz, AND M. Sandy. Potential Release Scenarios for Multi-Walled Carbon Nanotubes from Composites. Presented at ILSI Nano-Release Meeting, Bethesda, MD, June 21 - 22, 2012.
Kong, L. AND R. G. ZEPP. Production and Consumption of Reactive Oxygen Species by Fullerenes. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY. Society of Environmental Toxicology and Chemistry, Pensacola, FL, 31(1):136-143, (2012).
CYTERSKI, M. J., S. Zhang, E. M. WHITE, M. MOLINA, K. L. WOLFE, R. S. PARMAR, AND R. G. ZEPP. Temporal Synchronization Analysis for Improving Regression Modeling of Fecal Indicator Bacteria Levels. WATER, AIR, AND SOIL POLLUTION. Springer, New York, NY, 223(8):4841-4851, (2012).
Blaustein, R., Y. Pachepsky, R. Hill, G. Whelan, M. Molina, R. Zepp, AND A. Sadeghi. The Arrhenius Equation As Means to Simulate E. Coli Survival in Waters. Presented at ASA, CSSA, and SSSA International Annual Meeting, Cincinnati, OH, October 21 - 24, 2012.
2011
ZEPP, R. G., D. J. Erickson III, N. D. Paul, AND B. Sulzberger. Effects of Solar UV Radiation and Climate Change on Biogeochemical Cycling: Interactions and Feedbacks. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, 10(2):261-279, (2011).
Viana, L. T., M. M. Bustamante, M. MOLINA, A. S. Pinto, K. Kisselle, R. G. ZEPP, AND R. A. BURKE. Microbial Communities in Cerrado Soils under Native Vegetation Subjected to Prescribed Fires and Under Pasture. PESQUISA AGROPECUARIA BRASILEIRA. Embrapa Informação Tecnológica , Brasília, Brazil, 46(12):1665-1672, (2011).
2010
Kong, L., K. Chen, R. G. ZEPP, X. MA, D. BOUCHARD, AND C. Isaacson. Effect of Natural Organic Matter on the Light-initiated Transformation of Fullerenes. Presented at 239th ACS National Meeting & Exposition, San Francisco, CA, March 21 - 25, 2010.
ZEPP, R. G., M. J. CYTERSKI, E. M. WHITE, M. MOLINA, K. L. WOLFE, R. S. PARMAR, S. Zhang, S. Hunter, E. Duvall, O. Tedrow, C. Fitzpatrick, E. Brouillette, AND C. Sloan. Empirical Modeling of Microbial Indicators at a South Carolina Beach. Presented at Region 4 Southeast Beach Conference, Jekyll Island, GA, February 25 - 26, 2010.
Kong, L., K. Chen, R. G. ZEPP, X. MA, D. BOUCHARD, AND C. Isaacson. Light-Initiated Transformation of C60 Clusters in Water. Presented at 239th ACS National Meeting & Exposition, San Francisco, CA, March 21 - 25, 2010.
Shank, G. C., R. G. ZEPP, A. VAHATALO, R. LEE, AND E. Bartels. Photobleaching Kinetics of Chromophoric Dissolved Organic Matter Derived from Mangrove Leaf Litter and Floating Sargassum Colonies. MARINE CHEMISTRY. Elsevier Science Ltd, New York, NY, 119(1-4):162-171, (2010).
Hou, W. C., L. Kong, K. A. Wepasnick, R. G. ZEPP, D. H. Fairbrother, AND C. T. Jafvert. Photochemistry of Aqueous C60 Clusters: Wavelength Dependency and Product Characterization. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 44(21):8121-8127, (2010).
Shank, G. C., R. Lee, A. Vahatalo, R. G. ZEPP, AND E. Bartels. Production of Chromophoric Dissolved Organic Matter from Mangrove Leaf Litter and Floating Sargassum Colonies. MARINE CHEMISTRY. Elsevier Science Ltd, New York, NY, 119(1-4):172-181, (2010).
Whitman, R. L., Z. Ge, M. B. Nevers, A. B. Boehm, E. C. CHERN, R. A. HAUGLAND, A. M. Lukasik, M. MOLINA, K. Przybyla-Kelly, D. A. Shively, E. M. WHITE, R. G. ZEPP, AND M. N. Byappanahalli. Relationship and Variation of qPCR and Culturable Enterococci Estimates in Ambient Surface Waters Are Predictable. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 44(13):5049-5054, (2010).
2009
STEVENS, C. T. AND R. G. ZEPP. ERD Research on Nutrient and Pathogen Dynamics. Presented at EPA/USGS Mercury in Streams Ecosystems Meeting, Athens, GA, March 17 - 19, 2009.
MOLINA, M., S. Hunter, E. M. WHITE, Y. J. Lee, AND R. G. ZEPP. Effect of Environmental Parameters on the qPCR Signal of Enterococci in Tropical Waters. Presented at American Society for Microbiology General Meeting, Philadelphia, PA, May 17 - 21, 2009.
ZEPP, R. G., M. J. CYTERSKI, E. M. WHITE, M. MOLINA, K. L. WOLFE, R. S. PARMAR, L. Olsen, S. Zhang, J. Qiu, J. Wong, J. Varner, O. Tedrow, R. Paddock, S. Mueller-Spitz, S. McLellan, AND M. Bruesch. Empirical Modeling of Fecal Indicator Bacteria, Enterococci and E. coli, at South Shore Beach, Milwaukee, WI. Presented at Great Lakes Beach Association Meeting, Milwaukee, WI, September 29 - October 01, 2009.
Kong, L., K. Chan, O. Tedrow, AND R. G. ZEPP. Investigation of Photochemical Properties of C60 Aggregates in Water. Presented at 237th ACS National Meeting & Exposition, Salt Lake City, UT, March 22 - 26, 2009.
Aranda, D. I., J. Capri, R. G. ZEPP, E. M. WHITE, M. MOLINA, M. Gidley, AND C. Sinigalliano. Levels of Viable Enterococci Fecal Indicator Bacteria at a Marine Subtropical Beach: Assessing Temporal and Spatial Variability. Presented at American Society for Microbiology General Meeting, Philadelphia, PA, May 17 - 21, 2009.
ZEPP, R. G., L. Kong, K. Chan, AND O. Tedrow. Light-Induced Transformations of the C60 Derivative, Fullerenol: Interactions with Natural Organic Matter. Presented at 238th ACS National Meeting & Exposition, Washington, DC, August 16 - 20, 2009.
Kong, L., O. Tedrow, Y. F. Chan, AND R. G. ZEPP. Light-Initiated Transformatioins of Fullerenol in Aqueous Media. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 43(24):9155-9160, (2009).
WHITE, E. M., R. G. ZEPP, M. MOLINA, AND M. J. CYTERSKI. Optical Properties of Three Beach Waters: Implications for Predictive Modeling of Enterococci. Presented at US EPA National Beach Conference, Huntington Beach, CA, April 20 - 22, 2009.
ZEPP, R. G., E. M. WHITE, M. MOLINA, AND M. J. CYTERSKI. Predictive Modeling of a Fecal Indicator at a Subtropical Marine Beach. Presented at US EPA National Beach Conference, Huntington Beach, CA, April 20 - 22, 2009.
MOLINA, M., S. Hunter, E. M. WHITE, Y. L. Lee, M. J. CYTERSKI, AND R. G. ZEPP. Urban Runoff Impact on the qPCR Signal of Enterococci and Other Alternative Fecal Indicators in a Tropical Beach. Presented at US EPA National Beach Conference, Huntington Beach, CA, April 20 - 22, 2009.
2008
ZEPP, R. G., E. M. WHITE, AND M. MOLINA. Differential Effects of Solar Ultraviolet Radiation on Culturable Enterococcus faecalis and Enterococcus DNA Determined Using Real-time Quantitative PCR. Presented at 2008 ASLO Summer Meeting, St. John's, NL, CANADA, June 08 - 13, 2008.
ZEPP, R. G., M. MOLINA, M. J. CYTERSKI, K. Kisselle, A. R. Kozovits, M. R. Silva, D. A. da Silva, AND M. M. Bustamante. Factors Influencing Decomposition of Surface Litter from the Cerrado in Central Brazil. Presented at Amazon in Perspective: International Science Conference, Manaus, BRAZIL, November 17 - 20, 2008.
WHITE, E. M., R. G. ZEPP, M. MOLINA, K. L. WOLFE, AND W. E. FRICK. Fecal Indicator Bacteria and Environmental Observations: Validation of Virtual Beach. Presented at Gordon Research Conference on Oceans & Human Health, Tilton, NH, June 29 - July 04, 2008.
ZEPP, R. G. How Are Changing Solar Ultraviolet Radiation and Climate Affecting Light-induced Chemical Processes in Aquatic Environments? . Presented at Northeast Regional Meeting of the American Chemical Society, Burlington, VT, June 29 - July 02, 2008.
ZEPP, R. G. Interactions of Changing Solar Ultraviolet Radiation and Climate with Light Induced Chemical Reactions in Aquatic Environments. Presented at Michigan State University, Department of Chemistry, East Lansing, MI, October 10, 2008.
JONES, R., R. G. ZEPP, M. J. CYTERSKI, M. MOLINA, AND E. M. WHITE. LIGHT-INDUCED PROCESSES AFFECTING ENTEROCOCCI IN AQUATIC ENVIRONMENTS. Presented at 2008 Ocean Sciences Meeting, Orlando, FL, March 02 - 07, 2008.
FRICK, W. E., Z. GE, AND R. G. ZEPP. Nowcasting and Forecasting Concentrations of Biological Contaminants at Beaches: A Feasibility and Case Study. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 42(13):4818-4824, (2008).
ZEPP, R. G., G. C. SHANK, A. VAHATALO, E. BARTELS, AND R. JONES. PHOTOBIOGEOCHEMISTRY OF SARGASSUM: A POTENTIALLY IMPORTANT SOURCE OF CHROMOPHORIC DISSOLVED ORGANIC MATTER IN THE UPPER OCEAN. Presented at 2008 Ocean Sciences Meeting, Orlando, FL, March 02 - 07, 2008.
ZEPP, R. G., G. C. SHANK, E. STABENAU, K. W. PATTERSON, M. J. CYTERSKI, W. S. FISHER, E. BARTELS, AND S. L. ANDERSON. Spatial and Temporal Variability of Solar Ultraviolet Exposure of Coral Assemblages in the Florida Keys: Importance of Colored Dissolved Organic Matter. LIMNOLOGY AND OCEANOGRAPHY. American Society of Limnology and Oceanography, Lawrence, KS, 53(5):1909-1922, (2008).
ZEPP, R. G., C. SHANK, E. STABENAU, K. W. PATTERSON, M. J. CYTERSKI, W. S. FISHER, E. BARTELS, AND S. L. ANDERSON. Spatial and Temporal Variability of Solar Ultraviolet Exposure of Coral Assemblages in the Florida Keys: Importance of Colored Dissolved Organic Matter x. LIMNOLOGY AND OCEANOGRAPHY. American Society of Limnology and Oceanography, Lawrence, KS, 53(5):1909-1922, (2008).
Kong, L., O. Tedrow, AND R. G. ZEPP. Spectroscopic and Photochemical Properties of Water-Soluble Fullerenol. Presented at 236th ACS National Meeting & Exposition, Philadelphia, PA, August 17 - 21, 2008.
Potter, C., S. Klooster, A. Huete, V. Genovese, M. Bustamante, L. G. Ferreira, R. Cosme de Oliveira, AND R. G. ZEPP. Terrestrial Carbon Sinks in the Brazilian Amazon and Cerrado Region Predicted from MODIS Satellite Data and Ecosystem Modeling. Presented at Amazon in Perspective: International Science Conference, Manaus, BRAZIL, November 17 - 20, 2008.
ZEPP, R. G., L. Kong, O. Tedrow, AND K. Chan. Transformations of Fullerenes: Fullerenol and Buckminsterfullerene. Presented at NERL Nano Club Teleconference on Nanomaterials Research, Athens, GA, November 13, 2008.
WOLFE, K. L., W. E. FRICK, R. G. ZEPP, M. MOLINA, M. J. CYTERSKI, AND R. S. PARMAR. Virtual Beach Manager Toolset. Presented at 7th Annual Surface Water Monitoring and Standards Meeting (SWiMS), Chicago, IL, March 18 - 20, 2008.
WOLFE, K. L., W. E. FRICK, R. G. ZEPP, M. MOLINA, AND M. J. CYTERSKI. Virtual Beach: Decision Support Tools for Beach Pathogen Prediction. Presented at EPA Science Forum, Washington, DC, May 20 - 22, 2008.
2007
ZEPP, R. G. COLOR COUNTS! INTERACTIONS OF COLORED ORGANIC MATTER WITH LIGHT AND CONTAMINANTS IN AQUATIC ENVIRONMENTS. Presented at Clemson Institute of Environmental Toxicology, Clemson University, Clemson, SC, March 13, 2007.
ZEPP, R. G., M. A. MORAN, W. SHELDON, E. BIERS, AND G. C. SHANK. EFFECTS OF PHOTOCHEMICAL, MICROBIAL AND SORPTION PROCESSES ON THE OPTICAL PROPERTIES AND DEGRADATION OF DISSOLVED ORGANIC MATTER FROM COASTAL WETLANDS. Presented at 10th International Symposium on Wetland Biogeochemistry, Annapolis, MD, April 01 - 04, 2007.
ZEPP, R. G. AND R. JONES. FACTORS INFLUENCING LIGHT-INDUCED MORTALITY OF ENTEROCOCCI IN SEDIMENT SUSPENSIONS. Presented at ASLO 2007 Aquatic Sciences Meeting, Santa Fe, NM, February 04 - 09, 2007.
ZEPP, R. G., D. J. ERICKSON III, N. D. PAUL, AND B. SULZBERGER. INTERACTIVE EFFECTS OF SOLAR UV RADIATION AND CLIMATE CHANGE ON BIOGEOCHEMICAL CYCLING. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, 6(3):286-300, (2007).
POTTER, C., M. BUSTAMANTE, S. KLOSTER, V. GENOVESE, L. FERREIRA, A. HUERTE, R. COSME, R. NEMANI, AND R. G. ZEPP. MODELING THE EFFECTS OF CLIMATE AND LAND USE CHANGE ON CARBON AND TRACE GAS BUDGETS OVER THE AMAZON REGION USING NASA SATELLITE PRODUCTS. Presented at Large-Scale Biosphere-Atmosphere Eco Science Team Meeting and Synthesis Workshop, Salvador, BRAZIL, September 26 - 30, 2007.
ZEPP, R. G., R. JONES, J. WILLIS, M. J. CYTERSKI, AND M. MOLINA. PREDICTIVE MODELING OF LIGHT-INDUCED MORTALITY OF ENTEROCOCCI FAECALIS IN RECREATIONAL WATERS. Presented at Society of Environmental Toxicology and Chemistry Annual Meeting, Milwaukee, WI, November 11 - 15, 2007.
WANG, W., O. C. ZAFIRIOU, I. Y. CHAN, R. G. ZEPP, AND N. V. BLOUGH. PRODUCTION OF HYDRATED ELECTRONS FROM PHOTOIONIZATION OF DISSOLVED ORGANIC MATTER IN NATURAL WATERS. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 41(5):1601-1607, (2007).
FERNANDES, E., M. BUSTAMANTE, A. KOZOVITS, AND R. G. ZEPP. REGIONAL EMISSIONS OF NITRIC OXIDE (NO) AND CARBON DIOXIDE (CO2) IN AGROECOSYSTEMS IN CENTRAL WEST REGION, BRAZIL. Presented at Large-Scale Biosphere-Atmosphere Eco Science Team Meeting and Synthesis Workshop, Salvador, BRAZIL, September 28 - 30, 2007.
ZEPP, R. G., G. SHANK, AND C. ROSENFELD. THE IMPACT OF CDOM PHOTOBLEACHING ON UV ATTENUATION NEAR CORAL REEFS IN THE FLORIDA KEYS. Presented at ASLO 2007 Aquatic Sciences Meeting, Santa Fe, NM, February 04 - 09, 2007.
BIERS, E. J., R. G. ZEPP, AND M. A. MORAN. THE ROLE OF NITROGEN IN CHROMOPHORIC AND FLUORESCENT DISSOLVED ORGANIC MATTER FORMATION. MARINE CHEMISTRY. Elsevier Science Ltd, New York, NY, 103(1-2):46-60, (2007).
2006
ZEPP, R. G., D. J. ERICKSON III, N. D. PAUL, AND B. A. SULZBERGER. CHANGING CLIMATE AND PHOTOBIOGEOCHEMICAL CYCLES IN AQUATIC ENVIRONMENTS. Presented at 33rd American Society for Photobiology Meeting, Rio Grande, PUERTO RICO, July 08 - 12, 2006.
ZEPP, R. G., G. C. SHANK, E. BARTELS, E. STABENAU, W. S. FISHER, AND C. FICHOT. DYNAMIC CHANGES IN COLORED DISSOLVED ORGANIC MATTER AND TOTAL SUSPENDED MATTER CONTROL UV EXPOSURE OF CORAL REEFS IN THE FLORIDA KEYS. Presented at 2006 Ocean Sciences Meeting, Honolulu, HI, February 20 - 24, 2006.
Pinto, A. S., M. M. Bustamante, R. S. Silva, K. W. Kisselle, M. Brossard, R. Kruger, R. G. ZEPP, AND R. A. BURKE. Effects of Different Treatments of Pasture Restoration on Soil Trace Gas Emissions in the Cerrados of Central Brazil. Earth Interactions. American Meteorological Society, Boston, MA, 10(1):1-26, (2006).
ZEPP, R. G. NANOSCALE BIOSENSORS IN ECOSYSTEM EXPOSURE RESEARCH. Presented at Workshop on Nanosensors and Nanomaterials for Sensors in Ecosystems Research, Research Triangle Park, NC, March 20, 2006.
MOLINA, M., R. G. ZEPP, A. KOZOVITS, J. BRESOLIN, AND M. BUSTAMANTE. RELATIONSHIP OF MICROBIAL COMMUNITY STRUCTURE AND CARBON DYNAMICS IN SOILS FROM BRAZILIAN SAVANNAS . Presented at 11th International Symposium on Microbial Ecology, Vienna, AUSTRIA, August 20 - 25, 2006.
2005
ZEPP, R. G. APPROACHES TO ESTIMATING LIGHT EXPOSURE OF CORAL REEFS. Presented at Symbiofest, University of Georgia, Department of Ecology, Athens, GA, April 29, 2005.
SHANK, G. C., R. LEE, R. G. ZEPP, AND E. BARTELS. CDOM PRODUCTION BY MANGROVE LEAF LITTER AND SARGASSUM COLONIES IN FLORIDA KEYS COASTAL WATERS. Presented at 2006 Ocean Sciences Meeting, Honolulu, HI, February 20 - 24, 2006.
MOLINA, M., R. G. ZEPP, A. KOZOVITS, J. BRESOLIN, AND M. BUSTAMANTE. EFFECTS OF FERTILIZER ADDITION ON MICROBIAL RESPIRATION AND UPTAKE OF CARBON MONOXIDE IN A CERRADO SOIL. Presented at LBA Science Meeting, Sao Paulo, BRAZIL, November 10 - 12, 2005.
MOLINA, M., R. G. ZEPP, A. KOZOVITS, J. BRESOLIN, AND M. BUSTAMANTE. EFFECTS OF FERTILIZER ADDITION ON MICROBIAL RESPIRATION AND UPTAKE OF CARBON MONOXIDE IN A CERRADO SOIL. Presented at LBA Science Meeting, Sao Paulo, BRAZIL, November 10 - 12, 2005.
ZEPP, R. G., T. V. CALLAGHAN, AND D. J. ERICKSON. ENVIRONMENTAL EFFECTS OF OZONE DEPLETION AND ITS INTERACTIONS WITH CLIMATE CHANGE: PROGRESS REPORT 2004. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, 4(2):177-184, (2005).
ZEPP, R. G., G. C. SHANK, M. A. MORAN, W. SHELDON, AND W. MILLER. FACTORS AFFECTING COLORED DISSOLVED ORGANIC MATTER IN AQUATIC ENVIRONMENTS OF THE SOUTHEASTERN UNITED STATES. Presented at EPA Science Forum 2005, Washington, DC, May 16 - 18, 2005.
ZEPP, R. G. FACTORS INFLUENCING EXPOSURE TO INORGANIC AND ORGANIC NANOMATERIALS IN AQUATIC ENVIRONMENTS. Presented at NHEERL Meeting, RTP, NC, July 28, 2005.
MORAN, M. A., E. BIERS, R. G. ZEPP, AND G. C. SHANK. INTERACTIONS OF NITROGEN AND NONLIVING ORGANIC MATTER IN THE FORMATION AND DECOMPOSITION OF CDOM IN COASTAL MARINE ENVIRONMENTS. Presented at Biomaterials & Environmental Marine Biotech Program Review, Arlington, VA, July 19 - 20, 2005.
VAHATALO, A. V. AND R. G. ZEPP. PHOTOCHEMICAL MINERALIZATION OF DISSOLVED ORGANIC NITROGEN TO AMMONIUM IN THE BALTIC SEA. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 39(18):6985-6992, (2005).
ZEPP, R. G., G. C. SHANK, W. S. FISHER, W. L. MILLER, C. FICHOT, E. BARTELS, E. STABENAU, M. A. MORAN, AND R. LEE. TECHNIQUES FOR DETERMINING UV EXPOSURE IN COASTAL WATERS: CASE STUDY IN SOUTH FLORIDA. Presented at Society of Environmental Toxicology and Chemistry Annual Meeting, Baltimore, MD, November 13 - 17, 2005.