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Elsevier Science

Rheology and Elastohydrodynamic Lubrication
1st Edition
B.O. Jacobson
English
This book gives a thorough overview on recent developments in lubricant rheology, elastohydrodynamic lubrication and the effects of surface roughness and particulate contamination in the lubricant on the overall behaviour of a heavily loaded lubricated contact. One of the aims of the book is to make clear to the reader that a Newtonian model for the lubricant behaviour does not have enough degrees of freedom to be able to describe the friction - traction behaviour of heavily loaded lubricated contacts or the oil film build-up and collapse under surface asperities for rough surfaces. The book contains quite a lot of experimental data of lubricants at high pressures, both solidification pressures, compressibilities and shear strength increase coefficients, which make it possible to estimate the friction and power loss in heavily loaded lubricated contacts for different pressures, temperatures, sliding speeds, and lubricant types. This is the first time that data of this type has been included in a textbook and it is hoped that the questions highlighted will serve to initiate and guide future research in this field.
Tortricid Pests
Their Biology, Natural Enemies and Control
1st Edition
Volume 5
L.P.S. van der Geest + 1 more
English
The economic importance of Tortricidae in agriculture and forestry is great: crops and forests in the temperate climatic zones suffer considerable loss due to this lepidopterous family. This volume covers the entire spectrum from taxonomy, morphology and physiology to chemical and biological control. It will provide an opening to the scientifc literature on Tortricidae for scientists in research institutions, universities and experimental stations. The indices include entries for synonyms referring to the species names used in this volume.
Structure-Activity and Selectivity Relationships in Heterogeneous Catalysis
1st Edition
Volume 67
R.K. Grasselli + 1 more
English
Structure plays an important role in heterogeneous catalysis. It provides a framework for the arrangement and stragetic placement of key catalytic elements, hosting them in a prescribed manner so that their respective electronic properties can exhibit their desired catalytic functions and mutual interactions. Under reaction conditions these framework structures and their catalytic guests undergo dynamic processes becoming active participants of the overall catalytic process. They are not mere static geometric forms. The dynamics of catalytic structures are particularly vivid in selective oxidation catalysis where the lattice of a given catalytic solid partakes as a whole, not only its surface, in the redox processes of the reaction. The catalyst becomes actually a participating reagent. By proper choice of key catalytic elements and their host structures, preferred catalytic pathways can be selected over less desired ones. However, not only in selective redox catalysis does structure play an important role, its importance is also well documented, among others, in shape selective zeolite catalysis, enantioselective hydrogenation and hydrodesulfurization... The contributions presented in this book address the dynamic character of the solid state under catalytic reaction conditions. By relating structure to activity and selectivity in heterogeneous catalysis our understanding of such correlations has been significantly enhanced through the use of sophisticated spectroscopic means, surface science and modeling.
Vehicle Tribology
1st Edition
M. Godet + 2 more
English
Vehicle Tribology was chosen as the topic for the 17th Leeds-Lyon Symposium, as it was decided to be a timely opportunity to bring together experts of many disciplines connected with problems of emissions, particulates and energy efficiency associated with the automobile engine. The volume contains 55 papers divided into eighteen sessions.
New Trends in CO Activation
1st Edition
Volume 64
L. Guczi
English
The aim of this volume is to provide scientists with a comprehensive summary of new research areas in the activation of carbon monoxide, as one of the most reactive molecules, and in its applications. In order to understand the variety of the reactivity of CO, a quantum-chemical approach helps the reader to understand the binding state of CO to the solid surface (Chapter 1). The structure of the adsorbed CO can be better understood by examining its reactivity towards single crystals in the absence and in the presence of promoters (Chapter 2). The first approach in the reactivity study is that of studying catalytic activity of single crystals and structure sensitivity which are summarized in Chapter 3. One of the most prominent effects in the CO activation process is ascribed to the presence of additives, promoters which, in a real catalyst system, are far more complicated than on single crystal surfaces (Chapter 4). The original Fischer-Tropsch process applied fused iron or cobalt catalysts which were suitable for producing mainly straight chain hydrocarbons. The two most important processes involving CO activation, the new FT process and alcohol formation are discussed in Chapters 5 and 7. An important type of catalyst, the bimetallic catalysts, is discussed in Chapter 6. The role of hydrogen as one of the most frequently used partners in CO activation is discussed in Chapter 8. The field of production of specialty chemicals is an excellent example of the homogeneous catalytic activation of CO (Chapter 9). In Chapter 10 an overview is given of the industrial applications of CO chemistry and these are illustrated by working processes. The final chapter gives the reader some hints about future progress in the field.
Dioxygen Activation and Homogeneous Catalytic Oxidation
1st Edition
Volume 66
L.I. Simándi
English
Dioxygen activation is a rapidly developing field in which research is directed at (1) modelling of biological oxidations, (2) design and utilization of new catalysts for oxidative transformations of organic substrates, (3) application of O2 (and H2O2) as a cheap oxidant in the manufacture of fine and bulk chemicals.Provided here is a collection of both review and original papers covering all aspects of dioxygen activation. All papers provide background information of previous work. Reactions mechanisms are extensively treated and a keyword index facilitates quick orientation. The book should prove invaluable to organic, bioinorganic and coordination chemists as well as biochemists interested in homogeneous catalysis.
Catalysis and Adsorption by Zeolites
1st Edition
Volume 65
G. Öhlmann + 2 more
English
The proceedings of ZEOCAT 90 reflect the wide-ranging aspects of the rapidly expanding field of zeolite science and technology. The invited plenary lectures given by eminent zeolite scientists summarize current knowledge and address topical areas of zeolite research, including a contribution on the use of zeolites as membranes. The field of investigations described in the submitted articles in this volume covers a wide area of problems ranging from the influence of the synthesis process on the properties to questions of acidity, adsorption, diffusion, and catalysis. Of special interest are the newly developed applications of zeolites in the synthesis of fine chemicals, the use of zeolites for sensors and solid electrolytes, and the sophisticated zeolite-based separation processes.
Environmental Biotechnology
1st Edition
Volume 42
A. Blažej + 1 more
English
The growing awareness of environmental problems provided the stimulus for this 4th International Symposium on Biotechnology, Interbiotech '90, to address many aspects of the relationship between biotechnology and the environment. The papers are mainly devoted to the contribution of biotechnology in solving environmental problems, including biological waste water treatment, utilization of municipal sewage sludge, detoxification of polluted soil and complex utilization of lignocellulosic wastes. There is examination of possible dangers in such cases as the release of r-DNA organisms into the environment. The relationship of biotechnology and energy (e.g. biogas, landfill gas fuel, photosynthetic systems for fuel production) is also discussed.
Chemistry of Microporous Crystals
1st Edition
Volume 60
S. Namba + 2 more
English
This volume is a collection of 14 plenary lectures and 25 invited and contributed papers which were presented at the International Symposium on Chemistry of Microporous Crystals (CMPC) held at Sophia University in Tokyo, Japan. The symposium was organized by the Japan Association of Zeolite in collaboration with twelve major academic Japanese societies dealing with the chemistry of microporous crystals. The symposium was attended by over 250 researchers from 13 countries.The objective of the symposium was to present new horizons and developments in the chemistry and application of natural and synthetic crystalline materials having microporous structures. At this meeting the following trends were noted: new possibilities for highly selective oxidation of hydrocarbon and synthesis of fine chemicals using modified zeolites and metallosilicates; sophisticated syntheses of some valuable hydrocarbons such as 2,6-dimethylnaphthal... and styrene which could not be obtained successfully by conventional catalysts; detailed mechanism of decomposition and aromatization of paraffinic hydrocarbons on zeolitic catalysts; methanol conversion on zeolite catalysts; syntheses of novel wide pore aluminophosphates and their isomorphously substituted porous crystals; detailed analysis of the state of cations in zeolites and metallosilicates; application to direct decomposition of nitric oxide; dynamic behavior of molecules in zeolite pores; chemistry and reaction performance of clay minerals. This proceedings volume contains thorough reviews and original contributions, each of which includes an extensive list of references. The result is a comprehensive overview of the chemistry of zeolite and zeolite-like crystalline materials and clay minerals, including pillared clays.
Frontiers of Shrimp Research
1st Edition
Volume 22
P.F. DeLoach + 2 more
English
Shrimps are subject to great consumer demand in the United States. However, more than #1 billion worth of shrimp is now imported; more than twice the amount produced domestically. Domestic shrimp production, mostly from the trawler fleet in the Gulf of Mexico, is thought to be at its maximum sustainable yield of 91,000 MT (heads-off). Increased production of shrimp in the U.S. through mariculture has been motivated by the increasing demand for this product.The biology of penaeid shrimp and lack of technology for their culture present special problems in fisheries science, reproductive biology, endocrinology, nutrition, pathology, culture science and future research. The purpose of the Frontiers of Shrimp Research symposium was to assess the status of shrimp research in these areas and to further foster the scientific collaboration vital for significant research advances. The participants included representatives of the science funding agencies, the mariculture industry and representatives of both the scientific research and science policy communities.The subject matter should be of interest to a variety of readers. Advanced undergraduate/gradua... students, mariculturists and research workers will find this volume both interesting and informative.

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