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Elsevier

Elsevier Science

  • Thin Metal Films and Gas Chemisorption

    • 1st Edition
    • Volume 32
    • P. Wissmann
    • English
    The last decade has seen an explosive growth in research on the physics and chemistry of metal surfaces. With the advent of modern spectroscopic methods several aspects of metallic surfaces and their interactions with gases could be explained. The standard of clean surfaces required for basic research were obtained essentially in two ways: (a) By ion-bombardment and proper heat treatment of single crystals, and (b) By depositing thin films on suitable substrates under UHV conditions. Chemisorption studies have concentrated on single crystal surfaces largely because of the inherent simplicity due to their well-defined structure. Numerous publications provide convincing evidence of the insights gained and the results obtained. The number of publications dealing with chemisorption on thin metal films is, however, rather small, although the films are technically more interesting than single crystals. Enormous difficulties faced in reliable characterization of the pure film surfaces, as compared to single-crystals, may be partly responsible for the lack of attention given to such films.The present book aims to fill an important gap in the literature on chemisorption studies. Apart from structural characterization methods, the investigation techniques emphasized here are those used solely for thin films or which permit a direct comparison with single-crystal studies. The literature published to date provides practically no mention of the possibilities available for the analysis of energetically heterogeneous surfaces with modern spectroscopic methods. For this reason, the capability of photoelectron spectroscopy, vibrational spectroscopy, work function measurements and optical analysis for characterizing the pure and gas-covered films is particularly emphasized.

  • Preparation of Catalysts IV

    Scientific Bases for the Preparation of Heterogeneous Catalysts
    • 1st Edition
    • Volume 31
    • G. Poncelet + 3 more
    • English
    The proceedings of the IVth International Symposium on the ``Scientific Bases for the Preparation of Heterogeneous Catalysts'', are presented in this volume. Since its start in 1975, this series of Symposia has continued to attract increasing scientific attention. An appreciable proportion of the papers presented at this Fourth Symposium stemmed from industrial research laboratories. The symposium dealt with catalysts for selective oxidation, hydrodesulphurizatio... Fischer-Tropsch catalysis, methanol synthesis, metal supported catalysts and new trends in catalyst preparation.

  • Three-Dimensional Models of Marine and Estuarine Dynamics

    • 1st Edition
    • Volume 45
    • J.C.J. Nihoul + 1 more
    • English
    These proceedings represent the most recent and complete state of the art review of three-dimensional models of the modern generation for the study of marine hydrodynamics and management of the marine system. The book is well illustrated by application to well-documented case studies.

  • The Interpretation of Logging Data

    Part B
    • 1st Edition
    • Volume 15B
    • English
    Conceived and written by a geologist for geologists, Fundamentals of Well-Log Interpretation is a considerably revised and updated translation of the French edition. Part 1 dealt with the acquisition of logging data and when it appeared, one reviewer wrote: ``Serra has written a major reference work which is unusually well-organized, well-illustrated, and information-rich... If volume 2 is as thorough and exacting in detail as volume 1, it will do much toward furthering geologists' knowledge of well logging.'' (AAPG Bulletin).The fundamental objective of this second volume is to show that wireline log data constitute a remarkable source of geological information of the utmost importance for geologists, but also for reservoir engineers, geophysicists and petrophysicists. Too often, by nature of their training, geologists do not realize that wireline log data, which are physical data, hold in fact a tremendous variety of geological information covering practically all branches of geology. They are reluctant to use these data because often they are not familiar with them and do not know how to interpret wireline logs. Other log users generally do not realize the importance of geological knowledge to better interpret logs.This book aims to fill the gap by showing how wireline log data are dependent on geological parameters and how to extract the latter from the former. Methods of extracting the desired information from the wireline log data are explained and illustrated. In summary, the book explains how to make good geological studies from wireline logs. It is an invaluable acquisition for geologists, petrophysicists, reservoir engineers and geophysicists who wish to make better use of wireline log data.

  • Remote Sensing in Soil Science

    • 1st Edition
    • Volume 15
    • M.A. Mulders
    • English
    This book provides comprehensive coverage of remote sensing techniques and their application in soil science. A clear, step-by-step approach to the various aspects ensures that the reader will gain a good grasp of the subject so that he can apply the techniques to his own field of study.The book opens with a thorough introduction to the physical aspects of electromagnetic radiation and the technical aspects of remote sensing and image processing. This is followed by a discussion of the methods for interpreting remote sensing data, and their application to soils, vegetation, and land as a whole.As the interpretation of soil conditions is based on many aspects (i.e. soil surface, vegetation, land use, land form), the scope of the book is correspondingly broad. It will therefore provide much useful information for students and scientists in soil science, geography, geology, hydrology, ecology, agriculture and civil engineering.

  • Synthesis of High-Silica Aluminosilicate Zeolites

    • 1st Edition
    • Volume 33
    • J.A. Martens + 1 more
    • English
    This book provides an overview of all new high-silica zeolites which have been discovered between 1975 and 1985. The first part presents some 25 proven recipes for the preparation of high-silica zeolites and describes the characteristics of the materials obtained. This will allow bench-scale production of these materials for scientific research. In the second part, high-silica zeolites with solved structure type are discussed. This part classifies many proprietary materials according to known structure types, and describes the rules and parameters which govern the formation of these materials. In the third part, the formation and characteristics of high-silica zeolites with unknown structure type are discussed. The book contains a wealth of information for all those scientists who incorporate the use of high-silica zeolites in their work.

  • Catalysis and Automotive Pollution Control

    • 1st Edition
    • Volume 30
    • A. Crucq + 1 more
    • English
    In June 1984 the EEC Commission proposed new standards of permissible exhaust gas from motor vehicles to be introduced in Europe; these standards were approved by the Ministers of the Environment one year later. As the control of automotive pollution is at present mainly a catalytic problem, it was decided to hold an International Symposium on the subject, and an organizing committee composed of people engaged in catalytic research in the different Belgian Universities was constituted. This was the first Symposium of its kind to be held on an international level, and the quality and scientific interest of the papers presented was exceptional. It is planned to hold a follow-up Symposium in 2 to 3 years' time.The first part of the book is a general introduction to the problem of automotive pollution. The second, properly catalytic, part is devoted to fundamental and applied studies on pollution control, with emphasis on exhaust catalytic converters.

  • The Organic Chemistry of Museum Objects

    • 1st Edition
    • Stephen G Rees-Jones
    • English
    The Organic Chemistry of Museum Objects provides an account of the composition, chemistry, and analysis of the organic materials which enter into the structures of objects in museum collections. This book is not intended to duplicate the information available in existing handbooks on the materials and techniques of art and conservation but rather to convey the state of knowledge of the chemical composition of such materials and so provide a framework for a general understanding of their properties. The book begins with a review of basic organic chemistry, covering hydrocarbons and compounds with functional groups. It then describes spectrometry and separation methods. This is followed by discussions of the chemistry and composition of oils and fats, natural waxes, bituminous materials, carbohydrates, proteins, and natural resins and lacquers. Subsequent chapters deal with synthetic materials, i.e., high molecular weight polymers of a wholly synthetic nature; and natural and synthetic dyestuffs. Also discussed are the deterioration and other changes in organic materials resulting from both free radical and ionic reactions; and the application of analytical methods to identify the organic materials of actual museum objects. This book is intended for both chemists and nonchemists.

  • Polymer Characterization by Liquid Chromatography

    • 1st Edition
    • Volume 34
    • G. Glöckner
    • English
    The main subject of this book is the characterization of plastics. To a high degree the properties of these polymers depend on the distribution of the molar mass and of other structural features, and small deviations frequently have a great effect. Therefore the characterization of polymers cannot be restricted to the determination of mean values but must yield information on these distributions. Using classical methods, the analytical fractionation of polymer homologues and structurally isomeric polymers is extremely time-consuming. Therefore, efficient chromatographic techniques are being increasingly employed in modern polymer characterization.In the first place, high-performance liquid chromatography is applied, in the form of size exclusion chromatography. It is also possible, however, to use other separation modes. More space is devoted to these other possibilities in this volume than is merited by their current range of applications, as the author believes that many separation problems will be solved by separation techniques of the non-exclusion type. Nevertheless, much emphasis is placed on size exclusion chromatography. Not only because of its current wide range of applications, but also because its relative importance, as a complement to other chromatographic techniques may even increase in the forthcoming years.This book is the first to cover all phenomena related to the above considerations. Starting with an introduction to basic liquid chromatography and to polymer science, it deals with the adsorption behaviour of polymers, with gradient techniques, with the kinetic band broadening in liquid chromatography, with instrumental features and packing materials. The book consists of four balanced sections and related information from about 1800 references is compiled in the tables. Some 250 figures and 30 tables will help give the reader a clear insight of the topics discussed. The book is aimed at helping the analyst or polymer chemist who is looking for information about chromatographic methods for the characterization of polymers.

  • Mechanics of Agricultural Materials

    • 1st Edition
    • Volume 8
    • G. Sitkei
    • English
    The importance of economical production of agricultural materials, especially crops and animal products serving as base materials for foodstuffs, and of their technological processing (mechanical operations, storage, handling etc.) is ever-increasing. During technological processes agricultural materials may be exposed to various mechanical, thermal, electrical, optical and acoustical (e.g. ultrasonic) effects. To ensure optimal design of such processes, the interactions between biological materials and the physical effects acting on them, as well as the general laws governing the same, must be known.The mechanics of agricultural materials, as a scientific discipline, is still being developed, and therefore has no exact methods as yet, in many cases. However, the methods developed so far can already be utilized successfully for designing and optimizing machines and technological processes.This present work is the first attempt to summarize the calculation methods developed in the main fields of agricultural mechanics, and to indicate the material laws involved on the basis of a unified approach, with all relevant physico-mechanical properties taken into account.The book deals with material properties, gives the necessary theoretical background for description of the mechanical behaviour of these materials including modern powerful calculation methods and finally discusses a large number of experimental results. Many of them can only be found in this book. Special attention is paid to the unified approach concerning theory and practice.The systematic treatment of the material makes the book useful to a wide circle of designers, researchers and students in the field of agricultural engineering. The book can also be used as a textbook at technical and agricultural universities.

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