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Author : Xuefeng Chu
Publisher :
ISBN 13 :
Total Pages : 486 pages
Book Rating : 4.:/5 (64 download)
Download or read book Integrated Pesticide Transport Modeling in Surface and Subsurface Environments written by Xuefeng Chu and published by . This book was released on 2002 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hossein Ghadiri
Publisher : CRC Press
ISBN 13 : 9780873717472
Total Pages : 240 pages
Book Rating : 4.7/5 (174 download)
Download or read book Modeling Chemical Transport in Soils written by Hossein Ghadiri and published by CRC Press. This book was released on 1992-09-23 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling Chemical Transport in Soils: Natural and Applied Contaminants provides a comprehensive discussion of mathematical models used to anticipate and predict the consequences and fate of natural and applied chemicals. The book evaluates the strengths, weaknesses, and possibilities for application of numerous models used throughout the world. It examines the theoretical support and need for experimental calibration for each model. The book also reviews world literature to discuss such topics as the movement of sorbed chemicals by soil erosion, the movement of reactive and nonreactive chemicals in the subsurface and groundwater, and salt transport in the landscape. Modeling Chemical Transport in Soils: Natural and Applied Contaminants is an important volume for environmental scientists, agricultural engineers, regulatory personnel, farm managers, consultants, and the chemical industry.
Author : Sri Harsha K. Pulijala
Publisher :
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.:/5 (71 download)
Download or read book Evaluation of a Pesticide Transport Model in Runoff, Subsurface Drainage and Leaching Environments written by Sri Harsha K. Pulijala and published by . This book was released on 2005 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Norman H. Crawford
Publisher :
ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.F/5 ( download)
Download or read book Pesticide Transport and Runoff Model for Agricultural Lands written by Norman H. Crawford and published by . This book was released on 1973 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zhiguo He
Publisher :
ISBN 13 :
Total Pages : 392 pages
Book Rating : 4.:/5 (248 download)
Download or read book Numerical Simulation of Flow, Sediment, and Contaminant Transport in Integrated Surface-subsurface Systems written by Zhiguo He and published by . This book was released on 2007 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydro-system within a watershed includes many environmental processes, such as rainfall, runoff, groundwater flow, infiltration, evapotranspiration, recharge, upland erosion, sediment transport, and contaminant transport. In order to investigate these processes and evaluate their effects on water environments, numerical models have been recognized as an increasingly efficient and effective tool. Due to the natural intrinsic connections between surface and subsurface waters, modeling of flow, upland soil erosion, and contaminant transport should be considered as an integrated system. This dissertation has developed a physically-based integrated numerical model for flow, sediment, and contaminant transport in the surface-subsurface system. In this model, the surface flow is calculated using a depth-averaged 2-D diffusion wave model, and the variably saturated subsurface flow is computed using the 3-D mixed-form Richards equation. Interactions between surface and subsurface flows are considered using the continuity conditions of the pressure head and exchange flux at the ground surface. A general form of the surface flow equation based on the diffusion wave approximation is developed, which is intrinsically coupled with the variably saturated subsurface flow equation. The upland soil erosion and transport model employs the concept of nonequilibrium that considers both erosion and deposition. The model simulates nonuniform total-load sediment transport, with detachments from rainsplash and/or hydraulic erosion driven by overland flow. Contaminant transports in both surface and subsurface domains are described using advection-diffusion equations. The model considers the sediment sorption and desorption of the contaminant, as well as contaminant exchanges between surface and subsurface due to infiltration, diffusion, and bed change. The integrated numerical model is evaluated by simulating several published laboratory- and field-scale experiments. It is further applied to compute flow discharge, sediment and pesticide concentration during storm events in the Deep Hollow Lake watershed, Mississippi. The sensitivity analysis of the model is also performed using different values for several model parameters. The results have shown that the integrated model framework is capable of simulating the rainfall-runoff related hydrological processes in natural surface-subsurface systems.
Author : Robert C. Knox
Publisher : CRC Press
ISBN 13 : 1351093894
Total Pages : 326 pages
Book Rating : 4.3/5 (51 download)
Download or read book Subsurface Transport and Fate Processes written by Robert C. Knox and published by CRC Press. This book was released on 2018-01-10 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents the first comprehensive reference volume available on subsurface transport and fate processes. The volume is organized into four sections covering the basics of contaminant properties and how they affect transport and fate, the fundamental processes affecting subsurface transport and fate of contaminants, applications of transport and fate information to various contaminant types, and utilization of transport and fate information for predicting contaminant behavior. Specific topics such as traditional hydrodynamic processes of advection and dispersion, facilitated transport and contaminant flushing, and individual ground water contaminants are also explored in detail. Subsurface Transport and Fate Processes is ideal for environmental and ground water consultants, regulatory agency personnel, and educators in geology, hydrogeology, civil engineering, and environmental engineering.
Author : Otto Richter
Publisher : Wiley-Blackwell
ISBN 13 : 3527614788
Total Pages : 293 pages
Book Rating : 4.5/5 (276 download)
Download or read book Environmental Fate Modelling of Pesticides written by Otto Richter and published by Wiley-Blackwell. This book was released on 2008-07-11 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is concerned with modelling the fate of organic substances in the soil. Once a chemical enters the soil it is subject to various transformation processes. It partitions between the liquid, solid and gaseous phase, it is sorbed to different binding sites with a different strength of bonding, it may decay by a simple chemical process or it may be transformed by microorganisms. Solute transport through soil and subsurface is mediated by water flow and is strongly influenced by solute sorption. To complicate matters, soil structures are heterogeneous. All these processes are embedded in a spatio-temporal hierarchy. The book brings together many different aspects of environmental fate modelling of pesticides comprising such diverse subjects as, e.g., compartment theory, nonlinear biological degradation models, modelling toxicity, parameter identification, coupling of physical and biological processes, pedotransfer functions, translation of models across scales, coupling geographical information systems with models, and FUZZY-approaches.
Author : Anthony S. Donigian (Jr.)
Publisher :
ISBN 13 :
Total Pages : 332 pages
Book Rating : 4.3/5 (91 download)
Download or read book Modeling Pesticides and Nutrients on Agricultural Lands written by Anthony S. Donigian (Jr.) and published by . This book was released on 1976 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 258 pages
Book Rating : 4.3/5 (555 download)
Download or read book Integrated Pest Management, Walter H. Horning Seed Orchard written by and published by . This book was released on 2005 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James Percy Mutch
Publisher : Burlington, Ont. : Inland Waters Directorate
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (359 download)
Download or read book EXPRES written by James Percy Mutch and published by Burlington, Ont. : Inland Waters Directorate. This book was released on 1993 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The EXPRES expert system is designed to aid regulatory personnel in their assessment of the potential for pesticides to contaminate the soil and shallow groundwater environment. The system consists of one screening assessment model and two mathematical simulation models. This report reviews the theory of pesticide transport and transformation in the unsaturated zone, the models used in the expert system, the development and operation of EXPRES, results from an evaluation of EXPRES using four case studies typical of a pesticide assessment, and scenarios illustrating the application of EXPRES. Appendices include a list of pesticides in the EXPRES data base, sample screens, and lists of EXPRES files. This report serves as a user manual for the expert system.
Author :
Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.3/5 (555 download)
Download or read book Integrated Pest Management, Provolt and Charles A. Sprague Seed Orchards written by and published by . This book was released on 2005 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. T. Rutledge
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.3/5 (91 download)
Download or read book A Steady-state Unsaturated-zone Model to Simulate Pesticide Transport written by A. T. Rutledge and published by . This book was released on 1991 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 242 pages
Book Rating : 4.E/5 ( download)
Download or read book Draft Environmental Impact Statement written by and published by . This book was released on 2003 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.3/5 (121 download)
Download or read book Selection Criteria for Mathematical Models Used in Exposure Assessments written by and published by . This book was released on 1987 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 924 pages
Book Rating : 4.F/5 ( download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Marguerite L. Leng
Publisher : CRC Press
ISBN 13 : 9781566700344
Total Pages : 428 pages
Book Rating : 4.7/5 (3 download)
Download or read book Agrochemical Environmental Fate State of the Art written by Marguerite L. Leng and published by CRC Press. This book was released on 1995-04-28 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accurate risk assessment is critical to pesticide regulation. This authoritative reference provides an exhaustive evaluation of current agrochemical environmental fate studies, a critical review of current EPA pesticide assessment guidelines, and a wide variety of environmental simulation models. Divided into four sections, this well-organized book provides a wealth of data and information vital to anyone involved in environmental exposure assessment, groundwater, surface water, and water contamination, pesticide regulation, and environmental simulation modeling. At your fingertips, you will have the latest information on the development of meaningful environmental fate data and how this information will result in accurate assessment of potential environmental and human hazards. The inadequacy of current regulatory guidelines and the resulting nonscientific assessment of agrochemical environmental fate are discussed in detail. A wide variety of environmental fate studies are included to demonstrate the current use of data to assess environmental fate and potential hazards associated with agrochemical use. Finally, ten chapters discuss the use of computer models that have been developed for analyzing and integrating data from a variety of environmental fate studies on agrochemicals used under various field conditions.
Author : J. Bau
Publisher : CRC Press
ISBN 13 : 0203215931
Total Pages : 275 pages
Book Rating : 4.2/5 (32 download)
Download or read book Integrated Approaches to Water Pollution Problems written by J. Bau and published by CRC Press. This book was released on 2003-09-02 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the International Symposium of Integrated Approaches to Water Pollution Problems [SISIPPA 89], Laboratorio Nacional de Engenharia Civil, Lisbon, Portugal, June 1989.
