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Elsevier Science

  • Coupled Thermo-Hydro-Mechanical Processes of Fractured Media

    Mathematical and Experimental Studies
    • 1st Edition
    • Volume 79
    • O. Stephanson + 2 more
    • English
    This work brings together the results, information and data that emerged from an international cooperative project, DECOVALEX, 1992-1995. This project was concerned with the mathematical and experimental studies of coupled thermo(T) -hydro(H) -mechanical(M) processes in fractured media related to radioactive waste disposal.The book presents, for the first time, the systematic formulation of mathematical models of the coupled T-H-M processes of fractured media, their validation against theoretical bench-mark tests, and experimental studies at both laboratory and field scales. It also presents, for the first time, a comprehensive analysis of continuum, and discrete approaches to the study of the problems of (as well as a complete description of), the computer codes applied to the studies.The first two chapters provide a conceptual introduction to the coupled T-H-M processes in fractured media and the DECOVALEX project. The next seven chapters give a state-of-the-art survey of the constitutive models of rock fractures and formulation of coupled T-H-M phenomena with continuum and discontinuum approaches, and associated numerical methods. A study on the three generic Bench-Mark Test problems and six Test Case problems of laboratory and field experiments are reported in chapters 10 to 18. Chapter 19 contains lessons learned during the project.The research contained in this book will be valuable for designers, practising engineers and national waste management officials who are concerned with planning, design and performance, and safety assessments of radioactive waste repositories. Researchers and postgraduate students working in this field will also find the book of particular relevance.

  • Hydrotreatment and Hydrocracking of Oil Fractions

    • 1st Edition
    • Volume 106
    • B. Delmon + 2 more
    • English
    The symposium on Hydrotreatment and Hydrocracking of Oil Fractions aims to provide a global perspective and an inspection of the state-of-the-art of these processes. New American, European and Japanese environmental regulations call for advanced hydrotreatment processes for HDS and HDN for the removal of S- and Ni-components from oil fractions. These will alter the product slate of the oil refineries and the hydrocarbon composition of these products. Hydrocracking will play an important part in this shift.Adapting the operating conditions will not suffice to reach the desired product specifications and yields. Adequate catalysts will have to be developed. Powerful tools are now available for this, e.g. surface science techniques, molecular modeling and new types of reactors operated in a nonsteady mode.Another instrument in the improvement of hydrotreatment and hydrocracking units is the availability of more realistic kinetic models. These are based on a judicious insight into the reaction mechanism, also provided by the above-mentioned tools. Progress in the analytical techniques has allowed the reduction of the lumping of components in these kinetic models and first order kinetic equations are gradually replaced by equations accounting for the adsorption of the various components.More detailed and more realistic reactor models are now based on rigorous hydrodynamic models and their application has become possible through the rapidly increasing possibilities of computers.

  • Material and Energy Balancing in the Process Industries

    From Microscopic Balances to Large Plants
    • 1st Edition
    • Volume 7
    • V.V. Veverka + 1 more
    • English
    This book represents the systematic coverage of mass and energy balancing in the process industries. The classical treatment of balances in the available literature is complemented in the following areas:- systematic analysis of large systems by Graph theory- comprehensive thermodynamic analysis (entropy and availability)- balancing on the basis of measured plant data (data reconciliation)- measurement design and optimisation- dynamic balancing- plant-wide regular mass and energy balancing as a part of company's information system.The major areas addressed are:- single- and multi-component balancing- energy balance- entropy and exergy (availability) balances- solvability of balancing problems- balancing with data reconciliation- dynamic balancing- measurement design and optimisation- regular balancing of large industrial systems.The book is directed to chemical engineers, plant designers, technologists, information technology managers, control engineers and instrumentation engineers in process industries. Major areas of applications are process industries and energy production, such as oil refining, natural gas processing, petrochemistry, chemical industries, mineral processing and utility production and distribution systems. University students and teachers of chemical engineering and control will also find the book invaluable.

  • Non-Invasive Monitoring of Multiphase Flows

    • 1st Edition
    • J. Chaouki + 2 more
    • English
    Non-Invasive Monitoring of Multiphase Flows is a result of the latest advances realized in non-invasive measurement of multiphase systems by means of various tomographic and velocimetric techniques. Written by experts on special topics within the realm of this subject, the book reviews in 15 chapters the theoretical background and the physics of the measurement process for each of a number of techniques. In addition, the mathematical modeling related to the measured property, such as in the image reconstitution problem for tomography, successful application of the techniques for measurement in various multiphase systems and their advantages and limitations are described.Features of this book:- Comprehensive and Complete. Covers both theoretical and application viewpoints of noninvasive measuring techniques in multiphase systems. There is no book available on this subject in the field of multiphase flows- Versatile. Material is presented in such a way that the book can be used either for research or for teaching graduate students specializing in the topic of multiphase flows- Awareness and Uniformity. The engineering community is made aware of advantages of these new techniques and they are presented in a uniform package.The editors strive to provide a comprehensive compendium of all the relevant information essential for practising engineers, consultants, university professors, graduate students and technicians who are involved in the study of multiphase flow phenomena. The book, although directed to the study of multiphase systems of interest to the chemical engineer, also provides valuable information for all other engineering disciplines that deal with multiphase systems.

  • Studies in Natural Products Chemistry

    Indices Part A
    • 1st Edition
    • Volume 31
    • Atta-ur- Rahman
    • English
    The Studies in Natural Products Chemistry series is a valuable source for researchers and engineers working in natural product and medicinal chemistry. Studies in Natural Products Chemistry Volume 31: Indices Part A encompasses the contents of the previous 30 volumes published in the Studies in Natural Products series. To make searching easier, the book is divided into four separate indices: Cumulative General Subject Index; Cumulative Organic Synthesis Index; Cumulative Pharmacological Activity Index and; Cumulative Biological Source Index, allowing readers to easily locate required information. This volume and the series remain an important addition to any library.

  • Hydraulic Handbook

    • 9th Edition
    • Toby Hunt + 1 more
    • English
    The first point of reference for design engineers, hydraulic technicians, chief engineers, plant engineers, and anyone concerned with the selection, installation, operation or maintenance of hydraulic equipment. The hydraulic industry has seen many changes over recent years and numerous new techniques, components and methods have been introduced. The ninth edition of the Hydraulic Handbook incorporates all these developments to provide a crucial reference manual for practical and technical guidance.

  • Cholinergic Mechanisms: From Molecular Biology to Clinical Significance

    • 1st Edition
    • Volume 109
    • J. Klein + 1 more
    • English
    This volume offers a comprehensive update and overview of the field of cholinergic transmission as presented by some thirty distinguished investigators who were recruited for their task from Germany, Great Britain, Canada, USA, Sweden, Israel, France and Italy. Exciting new discoveries, described in this volume, are due to recent methodological breakthroughs. These discoveries throw new light on many areas of cholinergic mechanisms.

  • Towards the Neurobiology of Chronic Pain

    • 1st Edition
    • Volume 110
    • G. Carli + 1 more
    • English
    This excellent volume provides a well-balanced review of activity-dependent modifications of synaptic efficacy which follow noxious events, and is based on the symposium "Towards the Neurobiology of Chronic Pain", organized in Siena, at the Certosa di Pontignano. The book will contribute to the continuing interest in understanding pain reinforcement by the brain. This emerging new concept can in turn be expected to have a great impact on the development of clinical paradigms of pain prevention and rehabilitation.

  • Thermal Modeling of Petroleum Generation: Theory and Applications

    • 1st Edition
    • Volume 45
    • C. Barker
    • English
    Petroleum exploration has always been limited by the lack of adequate subsurface control. Exploration problems are usually problems of extrapolation i.e. to greater depth, to laterally equivalent rocks, or back through time.Models are widely used as a way of describing complex geological systems so that they can be treated quantitatively and used as the basis for extrapolations and predictions. Models consider, typically, a simplified geological system that can be described mathematically. It is very important to know what simplifying assumptions have been made, when these assumptions are valid, and under what conditions their use may not be appropriate. This requires an understanding of the concepts involved in building the model and how the model operates.Models are best used as a tool for probing the system and evaluating the sensitivity of the conclusions to possible uncertainties in the values of the input parameters. In a sense, models permit experimental petroleum geochemistry and allow the user to answer the What if? questions e.g. What if the geothermal gradient had been higher in the past? What if the organic matter type had been different?This book provides students, exploration geologists, and others who would like to use the available models, with a general idea of how the models work, what they can do, and what their limitations are.It also provides the information necessary to obtain the input data required by the commercial models.

  • The Polymodal Receptor - A Gateway to Pathological Pain

    • 1st Edition
    • Volume 113
    • T. Kumazawa + 2 more
    • English
    This volume is derived from a celebration of the career of Professor Takao Kumazawa at Nagoya University and includes papers from investigators throughout the world whose contributions are dedicated to his honour. Topics range from current studies and reviews of the impact of modern molecular biology on the contemporary knowledge of polymodal receptors, to reflections related to the career and lifetime achievements of a pioneer neurophysiologist who has focused on relatively simple modal systems, especially those concerned with deep or visceral sensing mechanisms and their role in the broad behavioral spectrum constituting pain.

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