Search Results for the EPA National Library Catalog

Items Found: 5697
Showing: Items 5501 - 5550
Your Search: (SUBJECT=Concentration)


 
 
 
Select Item Title Year Published
Use of Automatic Differentiation for Sensitivity Analysis in Emission Control Process. 1995
Use of electron microscopy data in receptor models for PM-10 / 1989
Use of emergency room patient populations in air pollution epidemiology / 1978
Use of Experimental Airborne Infections for Monitoring Altered Host Defenses. 1982
Use of exposure units for estimating aquatic toxicity of organophosphate pesticides / 1977
Use of Fish Ventilation Frequency to Estimate Chronically Safe Toxicant Concentrations. 1982
Use of Genetic Activity Profiles in Hazard Evaluation. 1988
Use of Hazard Models in Evaluating the Effect of Exposure Duration on the Acute Toxicity of Three Pesticides. 1990
Use of Kriging to Estimate Monthly Ozone Exposure Parameters for the Southeastern United States (Journal Version). 1988
Use of meteorological data in air quality trend analysis / 1978
Use of natural ventilation to control radon in single family dwellings / 1990
Use of Plume Dispersion Modelling for Viable Aerosols from an Activated Sludge Sewage Treatment Plant. 1985
Use of Portable Instrumentation for the Monitoring of Fugitive Organic Emissions from Hazardous Waste Incinerators. 1984
Use of Quantitative Analysis of Urine to Assess Exposure to Asbestos Fibers in Drinking Water in the Puget Sound Region. 1983
Use of Scavenging Ratios for the Inference of Surface-Level Concentrations and Subsequent Dry Deposition of Ca(2+), Mg(2+), Na(1+), and K(1+). 1990
Use of soil cleanup criteria in 40 CFR part 192 as remediation goals for CERCLA sites. 1998
Use of the Amphipod Crustacean 'Hyalella Azteca' in Freshwater and Estuarine Sediment Toxicity Tests. 1988
Use of the Black Creek Database to Analyze Techniques for Estimating Nonpoint Source Loadings from Small Watersheds (May 1988). 1991
Use of the flame photometric detector method for measurement of sulfur dioxide in ambient air : a technical assistance document / 1978
Use of the Grass Shrimp 'Palaemonetes pugio' in a Life-Cycle Toxicity Test. 1979
Use of Water Raman Emission to Correct Airborne Laser Fluorosensor Data for Effects of Water Optical Attenuation. 1981
USEPA (Environmental Protection Agency) Method Study 36 SW-846 Methods 8270/3510, GC/MS (Gas Chromatography/Mass Spectrometry) Method for Semivolatile Organics: Capillary Column Technique Separatory Funnel Liquid-Liquid Extraction. 1989
USEPA (U.S. Environmental Protection Agency) PM(sub 10) Methodology Review. 1985
USEPA (United States Environmental Protection Agency) Method Study 35.SW Method 3005. Acid Digestion of Waters for Total Recoverable or Dissolved Metals for Analyses by Flame Atomic Absorption Spectroscopy. 1989
USEPA (United States Environmental Protection Agency) Method Study 7. Analyses for Trace Elements in Water by Atomic Absorption Spectroscopy (Direct Aspiration) and Colorimetry. 1986
USEPA method study 38 SW-846 method 3010 acid digestion of aqueous samples and extracts for total metals for analysis by flame atomic absorption spectroscopy / 1989
USEPA method study, method 510.1, the determination of the maximum total trihalomethane potential / 1987
User's guide for conducting life-cycle chronic toxicity tests with fathead minnows (Pimephales promelas) / 1982
User's guide for MPTER : a multiple point gaussian dispersion algorithm with optional terrain adjustment / 1980
User's guide for MPTER : a multiple point gaussian dispersion algorithm with optional terrain adjustment / 1980
User's guide for PAL ; a gaussian-plume algorithm for point, area, and line sources / 1978
User's guide for RAM / 1978
User's guide for RAM / 1987
User's Guide for RAM: Volume II Data Preparation and Listings / 1978
User's Guide for the Automated Inhalation Exposure Methodology (IEM). 1983
User's Guide for the Automated Inhalation Exposure Methodology (IEM): Addendum 1. Project Summary. 1983
User's guide for the Climatological Dispersion Model / 1973
User's guide for the fugitive dust model (FDM) 1991
User's guide for the fugitive dust model (FDM) : revised : user's instructions / 1991
User's guide for the gas chromatography automation system / 1979
User's guide for the photochemical box model (PBM) / 1984
User's guide for the urban airshed model / 1990
User's guide for the urban airshed model : volume VI : user's manual for the postprocessing system / 1991
User's Guide for the Urban Airshed Model. Volume 2. User's Manual for the UAM (CB-IV) Modeling System. 1990
User's Guide for the Urban Airshed Model. Volume 3. User's Manual for the Diagnostic Wind Model. 1990
User's Guide for the Urban Airshed Model. Volume 4. User's Manual for the Emissions Preprocessor System. 1990
User's Guide for the Urban Airshed Model. Volume 5. Description and Operation of the ROM - UAM Interface Program System. 1990
User's Guide to the Rough Terrain Diffusion Model (RTDM) (Rev. 3.20). 1987
User's Guide to the Texas Climatological Model. 1980
User's guide to TSCREEN : a model for screening toxic air pollutant concentrations (revised). 1994

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