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Elsevier Science

Progress in Electromagnetics Research, Volume 1
1st Edition
J.A. Kong
English
This important new volume is the first in a series that will report on advances and applications in the modern development of electromagnetics. This series will serve as an international forum for the publication of state of the art review articles on new theories, methodologies and computational techniques, and interpretations of both theoretical and experimental results. The series' wide scope covers the spectrum of related topics from electrostatics to optical frequencies and beyond. It constitutes an invaluable reference for scientists and engineers in the electromagnetics profession and will act as a source of new topics for researchers in electromagnetics.Thi... first volume includes papers on electromagnetics as applied to complex resistivity of the earth, medical treatments, remote sensing, and more.
Agricultural Engineering Soil Mechanics
1st Edition
Volume 10
E. McKyes
English
This book provides an introduction to classical soil mechanics and foundation engineering, and applies these principles to agricultural engineering situations. Theoretical design formulae are given, plus tables and graphs dealing with bearing capacity factors, wall pressure factors, soil cutting numbers and soil mechanical properties. Many example problems of design and analysis are solved in the text, and there are unsolved problems given for each chapter.The text begins with descriptions of soil origins and classification systems, including agricultural classification schemes, and then introduces classical concepts of soil strength and strength measurement techniques in the laboratory and in the field. Soil mechanics is applied to the design of shallow foundations, and the design formulae as well as tables of bearing capacity factors for design use are provided. New research and design findings in the specialized area of tall and heavy farm silos are also given, in addition to deep pile foundation design for heavy structures on very soft soils. Water flow in soils is treated, together with stability of ditch bank slopes and small earth dams, design of retaining walls and pressure pressures in bins and silos, soil erosion and protection methods, soil cutting and tillage design methods, soil compaction analysis, the use of geotextiles and problems of soil freezing.The book is directed primarily at professional university students in Agricultural Engineering, but will also be of interest to scientists working in other engineering branches, landscape architecture, soil physics and the like.
Guide-Lines to Planning Atomic Spectrometric Analysis
1st Edition
Volume 4
B. Magyar
English
Studies in Analytical Chemistry, Volume 4: Guide-Lines to Planning Atomic Spectrometric Analysis covers the physico-chemical background of atomic absorption spectrometry (AAS) and atomic emission spectrometry (AES). This book is composed of six chapters and begins with an introduction to the criteria on choosing the best and most suitable method for solving a given analytical problem. The next chapters deal with the properties, generation, and absorption of electromagnetic radiation, as well as the theory of atomic spectra that require knowledge of X-ray. Other chapters discuss the broadening of atomic lines, which is important for understanding that calibration curves in AAS are always bent. A chapter examines the sensitivity of determination by AAS and AES. The last chapter describes the spectrometric measurement of atomic absorption and emission. This chapter also looks into the influence of the design of the monochromator upon the measured emission intensity and calibration curve by AAS. This book will prove useful to analytical chemists and researchers.
Handbook of Mutagenicity Test Procedures
2nd Edition
B.J. Kilbey + 3 more
English
The compilation of this book was prompted by the necessity of a bench volume which could provide the necessary background information on materials, experimental design, pitfalls and dificulties, in order to perform a particular test in an acceptable way with a minimal need for additional expert help. This Second Edition updates this information, providing: - a comprehensive bench guide - methods known to be reliable - a broad spectrum of approaches - tips to avoid pitfalls when using unfamiliar techniques - data from population records - safety aspects of mutagens and carcinogens - basic statistical concepts for experiment design This `on the bench' methodological text provides the necessary information for most of the common assays for genetic damage in use. The book includes methods which have been sufficiently used and tested to make their use reliable, but also presents methods which are not widely used at present, but which might prove most useful in screening for mutagenic effects.
Vehicle Traction Mechanics
1st Edition
Volume 3
R.N. Yong + 2 more
English
The fundamental problem in the study of vehicle mobility is the development of traction between the vehicle and the supporting terrain. The mechanics of energy transfer will essentially control the final performance of the surficial machine. Determining and predicting the capability of a particular piece of machinery to traverse successfully a specific piece of terrain is very complex, particularly as the characteristics and properties of different types of terrain cover vary considerably, as do the many types of vehicle and their running gear.The material that forms the basis of this book has been gathered over many years of study both in the laboratory and in the field. It studies vehicle traction mechanics from the viewpoint of the interaction between the vehicle and the ground surface. The types of machines covered include earth-moving, forestry, agricultural, and construction machines. In addition, the mechanisms involved in the development of traction and the working of the terrain through cultivation, construction and surface disturbances are examined. The book also addresses the problems of off-road mobility and terrain trafficability, especially from the terrain-support and terrain interaction points of view. It is the authors' aim that the book will provide the reader with the ability to both analyze and predict the traction capability of his proposed machinery, and also to anticipate the kinds of reactions that will occur in the ground and at the ground surface.
Chemical Bonds - Better Ways to Make Them and Break Them
1st Edition
Bozzano G Luisa
English
Stereochemistry of Organometallic and Inorganic Compounds, Volume 3: Chemical Bonds—Better Ways to Make Them and Break Them focuses on the processes, methodologies, reactions, and approaches involved in the making and breaking of bonds. The selection first tackles heterometallic clusters in catalysis and steric and electronic effects on the photochemical reactions of metal-metal bonded carbonyls. Discussions focus on heterodinuclear metal carbonyls, hybrid catalysts prepared from molecular mixed-metal clusters, and heterometallic clusters in homogeneous catalysis. The book then examines the stereochemical aspects of organometallic clusters, including reactivity, dynamics, and the structures and rationalization of bonding in alkyne-substituted clusters. The publication takes a look at the stereochemistry of the Sakurai reaction, as well as intermolecular and intramolecular reactions, optically active allylsilanes, and other reactions. The selection is a highly recommended source of data for chemists and readers interested in the making and breaking of chemical bonds.
Agricultural Ecology and Environment
1st Edition
B.R. Stinner + 2 more
English
The increased use of chemical fertilizers and pesticides in crop production has adversely affected both the environment and the agricultural economy. Not only has it led to environmental pollution, but also the increasing costs of chemical inputs and the low prices received for agricultural products have contributed to economic unprofitability and instability.The International Symposium on Agricultural Ecology and Environment was organised in order to discuss ways of achieving the goals of economically and environmentally sustainable agriculture. It is apparent that a truly multidisciplinary effort is required and for this reason the meeting was attended by authors from many different disciplines and geographical locations. Although their papers reflect a wide diversity of agroecosystem types and examples, several common themes emerge: the increased importance of biotic control of ecosystem processes in lower input systems; the key role of soil organic matter in stabilizing nutrient cycling; the importance of agricultural landscape diversity and complexity; the importance of studying ecological processes in natural and agricultural ecosystems; the critical need to integrate socio-economic and ecological approaches.
Time-of-Flight Mass Spectrometry and its Applications
1st Edition
E.W. Schlag
English
The resurgence of time-of-flight mass spectrometry (TOF-MS) has had its origin in the simplicity of construction and application of such instruments together with the high transmission and the great increase in resolution that has been achieved. The instrument lends itself naturally to a coupling with pulsed laser sources, though this is not a prerequisite. It also affords a time resolution far beyond that traditionally achieved with mass spectrometric rapid scan techniques - a recent example being the real-time analysis of a multi-component mixture from an automobile exhaust. Furthermore, the mass range appears to be extremely large: mass up to 500 kDa and beyond what is being readily measured in the laboratory today.The present set of contributions attempts to give a survey of current applications from many of the active groups in the field. A variety of new applications are considered which are no doubt just the beginning of large new areas of application. By presenting this work in book form it is hoped that it will be of help to the many groups intending to initiate work in this rapidly expanding new area of mass spectrometry.
Research in Chemical Kinetics
1st Edition
Bozzano G Luisa
English
Research in Chemical Kinetics, Volume 1 focuses on authoritative review articles on a wide range of developing topics in the kinetics of gaseous and condensed phases. The selection first elaborates on gas-phase kinetics of free radicals studied by pulse radiolysis combined with time-resolved infrared diode laser spectroscopy and solid/liquid reactions of environmental significance. Discussions focus on coprecipitation of phosphate with calcite, reactions of silica and quartz, infrared spectroscopy of free radicals, and kinetics of methyl radicals. The book then examines the collision energy dependence of reaction cross sections and photoelectrochemical dynamics, including organometallic photoelectrochemistr... and photofragmentation voltammetry, contrasting reactivity of ion radical excited states, photoelectrochemical reaction mechanisms, and experimental methods. The publication tackles collisional electronic energy transfer in CN free radicals, photo-ion imaging techniques and future directions in reactive scattering, and photoelectrochemical dynamics. Topics include photoelectrochemical reaction mechanisms, photoelectrochemical measurement of quantum yields, photofragment translational spectroscopy, and velocity distributions. The selection is a valuable reference for researchers interested in the kinetics of gaseous and condensed phases.
Towards a Second Green Revolution
From Chemical to New Biological Technologies in Agriculture in the Tropics
1st Edition
Volume 19
G.B. Marini-Bettòlo
English
Genetic research in some fundamental crops, together with the use of chemicals as pesticides and fertilizers, opened the way in the 1950s and 1960s to great changes in methodology in agriculture - with astonishing results in the tropics. This change became known as the Green Revolution - a truly great revolution in methods and materials which, when applied with intelligence, made possible in a few years the achievement of complete sufficiency in cereals production in South and South East Asia, Mexico and South America. After 20 years of continuous success, aspects of the Green Revolution need to be rediscussed in the light of new findings and possibilities offered by scientific and technological progress - and negative side effects on environment and health. These papers examine the present state of agriculture, and indicate the way forward for its development, especially in the tropics and, in particular, Africa and South America. The need for more research is stressed; priorities in the application of this research are discussed, such as the economic aspects of any new system to be adopted, and the need to respect the ecological equilibria of different environments and the balance of energy input/output in a given agrosystem.

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