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Records 51 to 68 of 68 records from author Roxanne Johnson

2005
HO, K. T., R. M. BURGESS, M. C. PELLETIER, D. E. CAMPBELL, K. T. PEREZ, M. G. CANTWELL, K. J. ROCHA, M. M. PERRON, J. A. CARDIN, R. L. JOHNSON, AND E. W. DAVEY. USE OF TIE METHODS IN A LARGER CONTEXT: THE DIAGNOSTICS APPROACH. Presented at Society of Environmental Toxicology and Chemistry Europe 2005, Lille, FRANCE, May 22 - 26, 2005.
Ho, K T., R M. Burgess, M Pelletier, D E. Campbell, K T. Perez, M Cantwell, K J. Rocha, M. M. Perron, J A. Cardin, R L. Johnson, AND E W. Davey. USE OF TOXICITY IDENTIFCATION AND EVALUATION METHODS IN A LARGER CONTEXT: THE DIAGNOSTICS APPROACH. Presented at Society of Environmental Toxicology and Chemistry Europe 2005 Conference, Lille, France, May 22-26, 2005.
HO, K. T., R. M. BURGESS, M. C. PELLETIER, D. E. CAMPBELL, K. T. PEREZ, M. G. CANTWELL, K. J. ROCHA, M. M. PERRON, J. A. CARDIN, R. L. JOHNSON, AND E. W. DAVEY. USE OF TOXICITY IDENTIFICATION AND EVALUATION METHODS IN A LARGER CONTEXT: CAUSAL ANALYSIS. Presented at Applications of Toxicity Identification and Evaluations in the Dutch Chemistry-Toxicity-Test of Harbor Sludge: An International Workshop sponored by the Dutch National Institute for Coastal and Marine Management, RIKZ, The Hague, NETHERLANDS, May 17 - 19, 2005.
2004
Ho, K T., M. L. Gielazyn, R M. Burgess, M Pelletier, J R. Serbst, S Ryba, M. M. Perron, M Cantwell, R Johnson, AND K T. Perez. DO TIE LABORATORY BASED ASSESSMENT METHODS REALLY PREDICT FIELD EFFECTS? Presented at The Society of Environmental Toxicology and Chemistry Annual Meetin and 4th Chemistry World Congess, Portland, OR, November 14-18, 2004.
Johnson, R L., K T. Perez, E W. Davey, J A. Cardin, AND K J. Rocha. WHAT TO DO IF THERE IS NO REFERENCE SYSTEM. Presented at 2004 EPA Science Forum:Healthy Communities and Ecosystems, Washington, DC, June 1-3, 2004.
2003
Davey, E W., K T. Perez, J A. Cardin, R Johnson, AND K J. Rocha. AN INTERACTIVE DEMONSTRATION OF 3D COMPUTER-AIDED TOMOGRAPHY IMAGERY FOR INTERPRETING AND QUANTIFYING ANTHROPOGENIC IMPACTS TO MARINE BENTHIC COMMUNITIES. Presented at EPA OW/OWOW Technology Transfer Conference: Emerging Technologies, Tools, and Techniques to Manage Our Coasts in the 21st Century, Cocoa Beach, FL, January 28-31, 2003.
Davey, E W., K T. Perez, J A. Cardin, R Johnson, AND K J. Rocha. APPLICATION OF 3D COMPUTER-AIDED TOMOGRAPHY TO THE QUANTIFICATION OF MARINE SEDIMENT COMMUNITIES IN POLLUTION GRADIENTS. Presented at EPA-OW/OWOW Technology Transfer Conference: Emerging Technologies, Tools, and Techniques to Manage Our Coasts in the 21st Century, Cocoa Beach, FL, January 28-31, 2003.
Johnson, R L., K T. Perez, E W. Davey, J A. Cardin, K J. Rocha, E H. Dettmann, AND J Heltshe. DISCRIMINATING THE BENTHIC EFFECTS OF ANTHROPOGENIC POINT SOURCES FROM SALINITY AND NITROGEN LOADING. Presented at Estuarine Research Federation National Conference, Seattle, WA, September 14-18, 2003.
Ho, K T., M. L. Gielazyn, R M. Burgess, M Pelletier, J R. Serbst, S Ryba, M. M. Perron, M Cantwell, R L. Johnson, AND K T. Perez. FIELD VALIDATION OF SEDIMENT TOXCITY IDENTIFCATION AND EVALUATION METHODS. Presented at Society of Environmental Toxicology and Chemistry Annual Meeting, Austin, TX, November 9-13, 2003.
2002
Perez, K., G. Morrison, E.W. Davey, N. Lackie, A. Soper, R. Blasco, D. Winslow, R.L. Johnson, P. Murphy, AND J.F. Heltshe. INFLUENCE OF SIZE ON FATE AND ECOLOGICAL EFFECTS OF KEPONE IN PHYSICAL MODELS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-91/275 (NTIS PB92121326).
Davey, E.W., K. Perez, A. Soper, N. Lackie, G. Morrison, R.L. Johnson, AND J.F. Heltshe. SIGNIFICANCE OF THE SURFACE MICROLAYER TO THE ENVIRONMENTAL FATE OF DI92-ETHYLHEXYLOPTHALATE PREDICTED FROM MARINE MICROCOSMS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-90/468 (NTIS PB91183210).
2001
Davey, E W., K T. Perez, J A. Cardin, R L. Johnson, AND K J. Rocha. APPLICATION OF COMPUTER-AIDED TOMOGRAPHY (CAT) AS A POTENTIAL INDICATOR OF MARINE MARCO BENTHIC ACTIVITY ALONG POLLUTION GRADIENTS. Presented at American Society of Limnology and Oceanography, Albuquerque, NM, February 12, 2001.
Johnson, R L., K T. Perez, E W. Davey, J A. Cardin, AND K J. Rocha. DISCRIMINATION OF NATURAL AND NON-POINT SOURCE EFFECTS FROM ANTHROGENIC EFFECTS AS REFLECTED IN BENTHIC STATE IN THREE ESTUARIES IN NEW ENGLAND. Presented at American Society of Limnology and Oceanography, Albuquerque, NM, February 12, 2001.
1999
Perez, K T., E W. Davey, H. Moore, Burnsrosol, J A. Cardin, R L. Johnson, AND D. Kopans. APPLICATION OF COMPUTER AIDED TOMOGRAPHY (CAT) TO THE STUDY OF MARINE BENTIC COMMUNITIES. ECOLOGICAL APPLICATIONS 9(3):1050-1058.
1996
Johnson, R L., R. R. Dupont, AND D. R. Graves. ASSESSING UST CORRECTIVE ACTION TECHNOLOGIES: DIAGNOSTIC EVALUATION OF IN SITU SVE-BASED SYSTEM PERFORMANCE. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-96/041 (NTIS 96-163597), 1996.
1994
Clark*, T. R., R. E. Chaudet, R L. Johnson, AND C Y. Fan*. ASSESSING UST CORRECTIVE ACTION TECHNOLOGIES: LESSONS LEARNED ABOUT IN SITU AIR SPARGING AT THE DENISON AVENUE SITE - CLEVELAND, OH. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-95/040 (NTIS PB95-188082), 1994.
1990
Donnelly, J. R., L. A. Drewes, R L. Johnson, W. D. Munslow, K. K. Knapp, AND G W. Sovocool. PURITY AND HEAT OF FUSION DATA FOR ENVIRONMENTAL STANDARDS AS DETERMINED BY DIFFERENTIAL SCANNING CALORIMETRY. THERMOCHIMICA ACTA 167:155-187, (1990).
1989
Powell, R. M., B. E. Bledsoe*, G. P. Curtis, AND R L. Johnson. INTERLABORATORY METHODS COMPARISON FOR THE TOTAL ORGANIC CARBON ANALYSIS OF AQUIFER MATERIALS. ENVIRONMENTAL SCIENCE & TECHNOLOGY 23(10):1246-1249, (1989).