Download or read book Measurements of Electromagnetic Pulse Propagation in Various Soils written by Michael L. Burrows and published by . This book was released on 1968 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the propagation velocity and attenuation of 2.5, 5, and 10 nS pulses in various soils with varying water contents have been made by packing the soils into a specially built coaxial line. From the table of results it is also possible to infer qualitatively the amount of pulse dispersion. The soils tested range from pure sand, which is essentially non-dispersive and has low attenuation, through various loams of moderate dispersion and attenuation to the highly-dispersive, highly-attenuating pure clays. (Author).
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Terrain Analysis by Electromagnetic Means written by Jerry R. Lundien and published by . This book was released on 1971 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electromagnetic Pulse Coupling and Propagation to Power Lines Theory and Experiments written by and published by . This book was released on 1974 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coupling of transients to aboveground transmission lines is analyzed and measured experimentally. Measurements were made using scale models approximately 1-foot high to represent power transmission lines. The coupling to the line and the propagation characteristics of the line were measured. The effects of bends and junctions on the transmitted signals were measured and analyzed. Periodically, grounded lines and multiconductor lines were also examined. The variation of the induced-voltage waveforms with soil conductivity, line height, and pulse width were calculated.
Download or read book U S Government Research and Development Reports written by and published by . This book was released on 1970-10 with total page 1338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electromagnetic Soil Properties in the VHF UHF Range Phase 1 written by Robert A. Falls and published by . This book was released on 1972 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Development Reports written by and published by . This book was released on 1970-11 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microwave Dielectric Behaviour of Wet Soils written by Jitendra Behari and published by Springer Science & Business Media. This book was released on 2006-03-10 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers detailed discussion of dielectric measurement and behaviour of wet soil, from theoretical and experiment points of view. The author describes numerous microwave measurement techniques and protocols, and shows how to evaluate and choose among them. The book is written primarily with the requirements of interdisciplinary researchers in agriculture and soil science in mind.
Download or read book New Approaches to Soil Water Content Measurement Using Electromagnetic Methods written by Gordon C. Starr and published by . This book was released on 1997 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Problems Perspectives and Challenges of Agricultural Water Management written by Manish Kumar and published by BoD – Books on Demand. This book was released on 2012-03-09 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food security emerged as an issue in the first decade of the 21st Century, questioning the sustainability of the human race, which is inevitably related directly to the agricultural water management that has multifaceted dimensions and requires interdisciplinary expertise in order to be dealt with. The purpose of this book is to bring together and integrate the subject matter that deals with the equity, profitability and irrigation water pricing; modelling, monitoring and assessment techniques; sustainable irrigation development and management, and strategies for irrigation water supply and conservation in a single text. The book is divided into four sections and is intended to be a comprehensive reference for students, professionals and researchers working on various aspects of agricultural water management. The book seeks its impact from the diverse nature of content revealing situations from different continents (Australia, USA, Asia, Europe and Africa). Various case studies have been discussed in the chapters to present a general scenario of the problem, perspective and challenges of irrigation water use.
Download or read book Soil Water Solute Process Characterization written by Javier Alvarez-Benedi and published by CRC Press. This book was released on 2004-12-28 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: The practitioner or researcher often faces complex alternatives when selecting a method to characterize properties governing a soil process. After years of research and development, environmental and agricultural professionals now have an array of methods for characterizing soil processes. Well-established methods, however, may not be suitable for
Download or read book Water and Sustainable Agriculture written by Iván Francisco García-Tejero and published by Springer Science & Business Media. This book was released on 2011-08-03 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Irrigated agriculture, a vital component of general agriculture, supplies fruits, vegetables, and cereals consumed by humans and grains fed to animals. Consequently, agriculture is the largest user of fresh water globally, and irrigation practices in many parts of the world are biologically, economically, and socially unsustainable. Water management should balance the need for agricultural water and the need for a sustainable environment. Water-use efficiency is the prime challenge in worldwide farming practices where problems of water shortages are widespread. Currently, agriculture is undergoing significant changes in innovative irrigation, fertilizer technology, and agronomic expertise. These elements constitute a vital platform for sustainable agricultural success and for preventing environmental damage. This review presents several processes linked to environmental irrigation, balancing environmental protection with improved agricultural production.
Download or read book Field Screening Europe written by Johannes Gottlieb and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: These Proceedings contain both oral and poster contributions to the first interna tional conference" Field Screening Europe - Strategies and Techniques for On-Site Investigation and Monitoring of Contaminated Soil, Water and Air", held in Karls ruhe September 29 - October 1, 1997. Environmental monitoring and the assessment of chemical contaminations are be coming more and more important. The integrated study of environmental con tamination in the field is a rather recent approach. "Field screening" indicates such field analytical tools, (quick) methods and strategies for on-site or in-situ environmental analysis and assessment of contamination. The classical strategy for investigating contaminants consists of the following steps: site studies, sampling, sample transport to the laboratory, sample preparation, and analysis. This strategy is rather expensive and time consuming. Some investiga tions, including sample preparation, may last several days. In many cases, the results must be available immediately and are of importance for further decisions. Field screening is an alternative or complement to this strategy that attempts to be cheaper and faster and may achieve the same quality of results. The most important argument for field analytical methods is that the superior accuracy and high costs of laboratory methods are disproportional to the possibility of arti facts from sampling and errors originating from spatial variations of contaminants.
Download or read book Ecohydrology written by Derek Eamus and published by CSIRO PUBLISHING. This book was released on 2006 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: A grasp of key elements of several disparate disciplines is required in order to fully understand the sustainable management of water. The authors, who have undertaken extensive field work and published widely take an international perspective on water in the environment in order to tackle issues of dryland salinity and water allocation.
Download or read book Introduction to Ground Penetrating Radar written by Raffaele Persico and published by John Wiley & Sons. This book was released on 2014-06-09 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: A real-world guide to practical applications of ground penetrating radar (GPR) The nondestructive nature of ground penetrating radar makes it an important and popular method of subsurface imaging, but it is a highly specialized field, requiring a deep understanding of the underlying science for successful application. Introduction to Ground Penetrating Radar: Inverse Scattering and Data Processing provides experienced professionals with the background they need to ensure precise data collection and analysis. Written to build upon the information presented in more general introductory volumes, the book discusses the fundamental mathematical, physical, and engineering principles upon which GPR is built. Real-world examples and field data provide readers an accurate view of day-to-day GPR use. Topics include: 2D scattering for dielectric and magnetic targets 3D scattering equations and migration algorithms Host medium characterization and diffraction tomography Time and frequency steps in GPR data sampling The Born approximation and the singular value decomposition The six appendices contain the mathematical proofs of all examples discussed throughout the book. Introduction to Ground Penetrating Radar: Inverse Scattering and Data Processing is a comprehensive resource that will prove invaluable in the field.
Download or read book Environmental Engineering IV written by Artur Pawlowski and published by CRC Press. This book was released on 2013-05-21 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental engineering has a leading role in the elimination of ecological threats, and deals, in brief, with securing technically the conditions which create a safe environment for mankind to live in. Due to its interdisciplinary character it can deal with a wide range of technical and technological problems. Since environmental engineering uses the knowledge of the basic sciences – biology, chemistry, biochemistry and physics – it is able to neutralise pollution in all the elements of the environment, i.e. the hydrosphere, atmosphere and lithosphere. Moreover, environmental engineering deals with the design and maintenance of systems of water supply, sewage disposal, heating, ventilation and air-conditioning in buildings. Environmental Engineering IV contains 77 peer reviewed papers selected from 527 presented at the 4th Congress of Environmental Engineering (Lublin, Poland, 2-5 September 2012). The contributions are divided into 7 chapters: • Water supply • Water and wastewater treatment • Neutralization of solid wastes and sludge • Air protection and quality • Indoor microclimate • Energy • Biology and technology Environmental Engineering IV assesses the state of scientific research in various areas of environmental engineering, evaluates the organizational, technical and technological progress made in contributing to ecological security, and determines the place of environmental engineering in sustainable development, taking into account current political and economic conditions, and is a valuable source of information for the environmental engineering professional and academic community.
Download or read book Advanced Experimental Unsaturated Soil Mechanics written by Alessandro Tarantino and published by CRC Press. This book was released on 2005-07-14 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of experimental unsaturated soil mechanics has grown considerably over the last decade. In the laboratory and in the field, innovative techniques have been introduced into mechanical, hydraulic, and geo-environmental testing. Normally, this information is widely dispersed throughout journals and conference proceedings and it is often difficult to identify suitable equipment and instrumentation for research or professional purposes. In this volume, however, the authors bring together the latest research in laboratory and field testing techniques, and the equipment employed, and examine the current state-of-the-art in a forum devoted solely to experimental unsaturated soil mechanics. The papers published in the proceedings were peer-reviewed by internationally-recognized researchers. The topics tackled by the papers include suction measurement, suction control, mechanical and hydraulic laboratory testing, geo-environmental testing, and field-testing.
