Download or read book Exposure Analysis Modeling System EXAMS written by Lawrence A. Burns and published by . This book was released on 1982 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exposure Analysis Modeling System EXAMS II written by Lawrence A. Burns and published by . This book was released on 1997 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exposure Analysis Modeling System written by Lawrence A. Burns and published by . This book was released on 1990 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exposure Analysis Modeling System written by Lawrence A. Burns and published by . This book was released on 1985 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EXPOSURE ANALYSIS MODELING SYSTEM EXAMS II USER S GUIDE FOR VERSION 2 97 5 U S ENVIRONMENTAL PROTECTION AGENCY MARCH 1997 written by and published by . This book was released on 1998* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book MEXAMS the Metals Exposure Analysis Modeling System written by and published by . This book was released on 1984* with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mexams written by U. S. Environmental Protection Agency and published by BiblioGov. This book was released on 2013-07 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Environmental Protection Agency (EPA) was introduced on December 2, 1970 by President Richard Nixon. The agency is charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress. The EPA's struggle to protect health and the environment is seen through each of its official publications. These publications outline new policies, detail problems with enforcing laws, document the need for new legislation, and describe new tactics to use to solve these issues. This collection of publications ranges from historic documents to reports released in the new millennium, and features works like: Bicycle for a Better Environment, Health Effects of Increasing Sulfur Oxides Emissions Draft, and Women and Environmental Health.
Download or read book Case studies and model testing of the metals exposure analysis modeling system MEXAMS written by Allen J. Medine and published by . This book was released on 1987 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book MEXAMS the Metals Exposure Analysis Modeling System written by A. R. Felmy and published by . This book was released on 1984 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Modeling and Health Risk Analysis Acts Risk written by Mustafa Aral ARAL and published by Springer Science & Business Media. This book was released on 2010-07-28 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Modeling and Health Risk Analysis (ACTS/RISK) The purpose of this book is to provide the reader with an integrated perspective on several ?elds. First, it discusses the ?elds of environmental modeling in general and multimedia (the term “multimedia” is used throughout the text to indicate that environmental transformation and transport processes are discussed in association with three environmental media: air, groundwater and surface water pathways) environmental transformation and transport processes in particular; it also provides a detailed description of numerous mechanistic models that are used in these ?elds. Second, this book presents a review of the topics of exposure and health risk analysis. The Analytical Contaminant Transport Analysis System (ACTS) and Health RISK Analysis (RISK) software tools are an integral part of the book and provide computational platforms for all the models discussed herein. The most recent versions of these two software tools can be downloaded from the publisher’s web site. The author recommends registering the software on the web download page so that users can receive updates about newer versions of the software.
Download or read book Validation of Exposure Models written by LA. Burns and published by . This book was released on 1983 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Available methods for evaluating the veracity and reliability of exposure models extend far beyond simple comparisons of observed and predicted values. To be valid, model tests must, first, be tailored to evaluate a model within its intended range of operation. Appropriate tests must then be developed to ensure that the model performs in accord with its designers'; intentions and that significant phenomena have not been neglected or oversimplified. Finally, comparisons between model predictions and realworld data sets can be used to compare the performance of competing models, but such studies usually cannot serve as general proofs of the reliability or validity of an individual model. These points can be elucidated by means of a discussion of some of the "validation" studies executed during the development of the exposure analysis modeling system (EXAMS). The EXAMS was designed to evaluate the probable long-term behavior of newly synthesized organic chemicals in aquatic systems. This design constraint strongly influenced the structure of the computer program and constrained the choice of appropriate tests of the program's capabilities. Conceptual verification, that is, comparison of program outputs with defined special cases, was used to evaluate and modify the program's description of chemical exchanges across the benthic boundary layer. Sensitivity analysis was used to assess the potential error induced by using reaction quantum yields as summary descriptors of the effects on photochemical reactivity of sorption to suspended sediments. "Validation," in the sense of direct comparisons with observational data, was used to test the relative success of several versions of a two-resistance volatilization model. Complex exposure models can never be fully validated in the dictionary sense of establishing the conclusive truth. Instead, we must rely upon a history of successful applications to impart increasing confidence in the reliability and applicability of the tools of environmental chemistry and computer modeling to environmental problems.
Download or read book Practical Applications and Comparisons of Environmental Exposure Assessment Models written by LM. Games and published by . This book was released on 1983 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several environmental fate models have been developed that can be used for predicting concentrations of anthropogenic chemicals in the aqueous environment. Although individual models vary in their mathematical approach and the assumptions they are based on, all have in common basic premises concerning the factors controlling distribution and transformation of any chemical. The validity of the various assumptions made can best be tested by using the models to determine how well they predict observed concentrations of currently manufactured chemicals. In this paper, monitoring data for a surfactant, linear alkylbenzene sulfonate (LAS), are used to compare the utility and success of the exposure analysis modeling system (EXAMS), simplified lake stream analysis (SLSA), and fugacity models in predicting distribution and concentration within a single flowing stream. The results show that each model is most applicable at a particular stage in hazard assessment. Obtaining quantitative exposure predictions for generally released chemicals requires a better definition of the types of environments that will be encountered and a better understanding of the sediment-water interface.
Download or read book User s guide for the Assessment System for Population Exposure Nationwide ASPEN Version 1 1 model written by and published by DIANE Publishing. This book was released on 2000 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Multimedia Exposure Assessment Model for Evaluating Ecological Risk of Exposure to Military related Compounds MRCs at Military Sites written by Patrick N. Deliman and published by . This book was released on 1998 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Residential Exposure Assessment written by Jeffrey Driver and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Residential Exposure Assessment: A Source Book is the result of a multiyear effort known as the Residential Exposure Assessment Project (REAP) which was initiated by the Society for Risk Analysis and the International Society of Exposure Analysis. This textbook is the primary product of the REAP and it contains contributions from over 30 professionals from a variety of disciplines such as chemistry, biology, physics, engi neering, industrial hygiene, toxicology, pharmacology, and environmental law, reflecting the diverse knowledge and resources necessary to assess and manage potential exposures occurring in and around the home. Expert working groups were organized for each of the 13 chapters to address such issues as U. S. legislation relevant to products used in and around the residence, methods for measuring and modeling exposures across multiple pathways and routes, and distributional data available for key residential exposure factors. This volume is a compendium of information about predictive methods and tools, monitoring methods, data sources, and key variables that characterize exposures in the residential setting. It presents approaches for doing exposure assessments in and around all types of residences. The purpose of the Source Book is to provide a resource for use in educational programs and for "practitioners" of residential exposure assessment. Accordingly, this book is intended for risk assessors, exposure assessors, students, initi ates new to the concept of risk assessment, industrial hygienists assessing health hazards in the home, engineers, and monitoring specialists.
Download or read book Microenvironmental Modeling Integrated with Geographic Information Systems for Exposure Analysis written by Ashwin Walia and published by . This book was released on 1998 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling of Pollutants in Complex Environmental Systems written by Grady Hanrahan and published by ILM Publications. This book was released on 2010 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental modelling has enjoyed a long tradition, but there is a defined need to continually address both the power and the limitations of such models, as well as their quantitative assessment. This book showcases modern environmental modelling methods, the basic theory behind them and their incorporation into complex environmental investigations. It highlights advanced computing technologies and how they have led to unprecedented and adaptive modelling, simulation and decision-support tools to study complex environmental systems, and how they can be applied to current environmental concerns. This volume is essential reading for researchers in academia, industry and government-related bodies who have a vested interest in all aspects of environmental modelling. Features include: A range of modern environmental modelling techniques are described by experts from around the world, including the USA, Canada, Australia, Europe and Thailand; many examples from air, water, soil/sediment and biological matrices are covered in detail throughout the book; key chapters are included on modelling uncertainty and sensitivity analysis; and, a selection of figures are provided in full colour to enable greater comprehension of the topics discussed.
