Water Pollution in Natural Porous Media at Different Scales

Water Pollution in Natural Porous Media at Different Scales PDF Author: L. Candela
Publisher: IGME
ISBN: 9788478406760
Category : Groundwater
Languages : en
Pages : 780

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Water Pollution in Natural Porous Media at Different Scales

Water Pollution in Natural Porous Media at Different Scales PDF Author: L. Candela
Publisher: IGME
ISBN: 9788478406760
Category : Groundwater
Languages : en
Pages : 780

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Book Description


Pollutants in Porous Media

Pollutants in Porous Media PDF Author: B. Yaron
Publisher: Springer Science & Business Media
ISBN: 364269585X
Category : Science
Languages : en
Pages : 310

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Book Description
The unsaturated zone is the medium through which pollutants move from the soil surface to groundwater. Polluting substances are subjected to complex physical, chemical and biological transformations while moving through the unsaturated zone and their displacement depends on the transport properties of the water-air porous medium system. Pollution caused by human activities, agriculture, and industry, has brought about a growing interest in the role of the unsaturated zone in groundwater pollution. Due to the complexity and the multidisciplinary nature of the subject, it is being investigated by specialists from various scientific disciplines, such as soil physicists, chemists, biologists, and environmental engineers. This state of affairs has motivated the initiative taken by the Water Quality Commissions of IUPAC (the International Union of Pure and Applied Chemistry) and IAHS (the International Association of Hydrological Sciences) to convene an international workshop, which was organized and hosted by the Institute of Soils and Water of the Agricultural Research Organization in Bet Dagan, Israel in March 1983. The lecturers at the workshop were an invited group of specialists who are engaged in studying the many facets of the unsaturated zone, and the present book is a selection of their presentations. Each chapter of the book relates to a different aspect of the unsaturated zone.

Handbook of Operations Research in Agriculture and the Agri-Food Industry

Handbook of Operations Research in Agriculture and the Agri-Food Industry PDF Author: Lluis M. Plà-Aragonés
Publisher: Springer
ISBN: 1493924834
Category : Business & Economics
Languages : en
Pages : 464

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Book Description
The scope of this book is Operations Research methods in Agriculture and a thorough discussion of derived applications in the Agri-food industry. The book summarizes current research and practice in this area and illustrates the development of useful approaches to deal with actual problems arising in the agriculture sector and the agri-food industry. This book is intended to collect in one volume high quality chapters on Methods and Applications in Agriculture and Agri-food industry considering both theoretical issues and application results. Methods applied to problems in agriculture and the agri-food industry include, but are not restricted to, the following themes: Dynamic programming Multi-criteria decision methods Markov decision processes Linear programming Stochastic programming Parameter estimation and knowledge acquisition Learning from data Simulation Descriptive and normative decision tree techniques, including: agent modelling and simulation, and state of the art surveys Each chapter includes some standard and traditional methodology but also some recent research advances. All the applications presented in the chapters have been inspired and motivated by the demands from the agriculture and food production areas.

Compositional Data Analysis

Compositional Data Analysis PDF Author: Vera Pawlowsky-Glahn
Publisher: John Wiley & Sons
ISBN: 1119977614
Category : Mathematics
Languages : en
Pages : 401

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Book Description
It is difficult to imagine that the statistical analysis of compositional data has been a major issue of concern for more than 100 years. It is even more difficult to realize that so many statisticians and users of statistics are unaware of the particular problems affecting compositional data, as well as their solutions. The issue of ``spurious correlation'', as the situation was phrased by Karl Pearson back in 1897, affects all data that measures parts of some whole, such as percentages, proportions, ppm and ppb. Such measurements are present in all fields of science, ranging from geology, biology, environmental sciences, forensic sciences, medicine and hydrology. This book presents the history and development of compositional data analysis along with Aitchison's log-ratio approach. Compositional Data Analysis describes the state of the art both in theoretical fields as well as applications in the different fields of science. Key Features: Reflects the state-of-the-art in compositional data analysis. Gives an overview of the historical development of compositional data analysis, as well as basic concepts and procedures. Looks at advances in algebra and calculus on the simplex. Presents applications in different fields of science, including, genomics, ecology, biology, geochemistry, planetology, chemistry and economics. Explores connections to correspondence analysis and the Dirichlet distribution. Presents a summary of three available software packages for compositional data analysis. Supported by an accompanying website featuring R code. Applied scientists working on compositional data analysis in any field of science, both in academia and professionals will benefit from this book, along with graduate students in any field of science working with compositional data.

The Geoheritage of Hot Springs

The Geoheritage of Hot Springs PDF Author: Patricia Erfurt
Publisher: Springer Nature
ISBN: 3030604632
Category : Science
Languages : en
Pages : 419

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Book Description
The aim of this book is to provide an overview of topics related to the extensive geoheritage of hot springs, their natural environments, and their integration into commercial and industrial functions. The eleven chapters explore aspects of historical and cultural traditions, geology and geochemistry, research updates, conservation issues and of course health, wellness, and recreation throughout time. Because natural hot springs and active hydrothermal areas play a significant role in the tourism industry, visitor expectations are examined together with an assessment of common hazards and potential risks in active hydrothermal environments, along with recommendations how to stay safe. For the purpose of showcasing certain unique features, to share noteworthy events and developments or to identify concerns associated with the sustainability of natural water source, examples of particular hot spring areas are included in several chapters. One chapter is also dedicated entirely to the protection of natural hot springs and raises awareness for conservation, while another chapter reviews the history of hot springs in great detail to establish a realistic and justifiable timeline of their original use. Lastly, the significance of natural hot springs for various tourism sectors is analysed and the potential for sustainable future destination development in rural and remote regions is discussed. Many locations were considered and invite the reader to use the information as a reference point in the quest to further explore the remarkable natural and cultural geoheritage of hot springs worldwide.

Constructed Subsurface Wetlands

Constructed Subsurface Wetlands PDF Author: Abdel Razik Ahmed Zidan
Publisher: CRC Press
ISBN: 1771884649
Category : Science
Languages : en
Pages : 664

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Book Description
With a sharp focus on environmental pollution and its impact on life and nature, scientists and engineers have studied the water treatment effect of natural wetlands for many years, resulting in the development of constructed wetlands (CWs) for treating wastewater. This informative new book provides current information and guidance on the construction, performance, operation, and maintenance of subsurface flow constructed wetlands of domestic and municipal wastewater. The focus of the volume is to evaluate the performance of horizontal subsurface flow constructed wetlands in treating domestic wastewater to establish the limit that can be safely discharged to agricultural drains. Two-step procedures were used for the preparation of this book. Using modeling and statistical analyses of treated water samples showed a significant difference between different media for the treatment of most pollutants. The authors went on to design artificial neural network models (ANNs) using Matlab software to simulate some of the experimental data and to anticipate the parameters of output concentration. The wetland systems have the ability to deal with various pollutants with different concentrations and to decrease the treated water to the standard limits. This volume presents the main role of emergent plants for treatment performance in the constructed wetlands and will be a very important resource for engineers in this field as well as for both undergraduate and graduate students.

The Triazine Herbicides

The Triazine Herbicides PDF Author: Janis Mc Farland Ph.D.
Publisher: Elsevier
ISBN: 0080559638
Category : Technology & Engineering
Languages : en
Pages : 604

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Book Description
Over the past 50 years, triazines have made a great impact on agriculture and world hunger by assisting in the development of new farming methods, providing greater farming and land use capabilities, and increasing crop yields. Triazines are registered in over 80 countries and save billions of dollars a year. The Triazine Herbicides is the one book that presents a comprehensive view of the total science and agriculture of these chemicals. With emphasis on how the chemicals are studied and developed, reviewed, and used at the agricultural level this book provides valuable insight into the benefits of triazine herbicides for sustainable agriculture. Presents previously unpublished information on the discovery, development and marketing of herbicides Includes a vital section on the origin, use, economics and fate of triazine herbicides Covers benefits of triazines in corn and sorghum, sugarcane, citrus, fruit and nut crops Establishes best management practice and environmental benefits of use in conservation tillage

Calibration and Reliability in Groundwater Modelling

Calibration and Reliability in Groundwater Modelling PDF Author: Jens Christian Refsgaard
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 372

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Book Description


Assessment of Non-Point Source Pollution in the Vadose Zone

Assessment of Non-Point Source Pollution in the Vadose Zone PDF Author: Dennis L. Corwin
Publisher: American Geophysical Union
ISBN: 0875900917
Category : Science
Languages : en
Pages : 369

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Book Description
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 108. Non-point source (NPS) pollution in the vadose zone (simply defined as the layer of soil extending from the soil surface to the groundwater table) is a global environmental problem. Characteristically, NPS pollutants are widespread and occasionally ubiquitous in extent, thus making remediation efforts difficult and complex; have the potential for maintaining a relatively long active presence in the global ecosystem; and may result in long?]term, chronic health effects in humans and other life forms. Similar to other global environmental issues, the knowledge and information required to address the problem of NPS pollutants in the vadose zone cross several technological and subdisciplinary lines: spatial statistics, geographic information systems (GIS), hydrology, soil science, and remote sensing. Cooperation between disciplines and scientific societies is essential to address the problem. Evidence of such cooperation was the jointly sponsored American Geophysical Union Chapman/Soil Science Society of America (SSSA) Outreach Conference that occurred in October 1997, entitled “Applications of GIS, Remote Sensing, Geostatistics, and Solute Transport Modeling to the Assessment of Non-Point Source Pollution in the Vadose Zone.” The objective of the conference and this book, which was developed from the conference, was to explore current multidisciplinary research for assessing NPS pollution in soil and groundwater resources.

Migrations of Fines in Porous Media

Migrations of Fines in Porous Media PDF Author: Kartic C. Khilar
Publisher: Springer
ISBN: 9789048151158
Category : Science
Languages : en
Pages : 0

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Book Description
This is the first book entirely on the topic of Migration of Fine Particles in Porous Media. There are two purposes for the use of this book. First, the book is intended to serve as a comprehensive monograph for scientists and engineers concerned with problems of erosion, pollution and plugging due to migration of fines in porous media. Second, the book is recommended to be used as a reference book for courses offered at senior or graduate level on the topics of flow through porous media, soil erosion and pollution, or formation damage. The migration of fine particles in porous media is an engineering concern in oil production, soil erosion, ground water pollution and in the operation of filter beds. As a result, the topic has been studied by researchers working in a number of disciplines. These studies in different disciplines are conducted, by and large, independently and hence there is some repetition and perhaps more importantly there is a lack of uniformity and coherence. These studies, nevertheless, complement each other. To illustrate the point, consider for example the migration of fine particles induced by hydrodynamic forces.