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Cohesion and Structure of Surfaces

Cohesion and Structure of Surfaces
Author: K. Binder
Publisher: Elsevier
Total Pages: 389
Release: 1995-12-18
Genre: Technology & Engineering
ISBN: 9780080529325

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During the past fifteen years there has been a dramatic increase in the number of different surfaces whose structures have been determined experimentally. For example, whereas in 1979 there were only 25 recorded adsorption structures, to date there are more than 250. This volume is therefore a timely review of the state-of-the-art in this dynamic field. Chapter one contains a compilation of the structural data base on surfaces within a series of tables that allows direct comparison of structural parameters for related systems. Experimental structural trends amongst both clean surfaces and adsorbate systems are highlighted and discussed. The next chapter outlines the successes of local density functional theory in predicting the relaxations and reconstructions of clean metal and semiconductor surfaces, and the behaviour of adsorbates such as hydrogen, oxygen and alkali elements on metal surfaces, thereby explaining some of the experimental trends observed within the database. These ab initio density functional calculations are of ground state properties at the absolute zero of temperature. Chapter three provides an introduction to finite temperature effects in a pedagogical review of current statistical mechanical treatments of phase transitions at surfaces, many of which display the prominent role of fluctuations or non-mean field behaviour. The final chapter discusses the relationship of the reactivity of a surface to its morphology and composition, which is particularly relevant to a fundamental understanding of catalysis.


Physical Structure

Physical Structure
Author:
Publisher: Elsevier
Total Pages: 901
Release: 1996-12-06
Genre: Technology & Engineering
ISBN: 0080538959

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The primary goal of this book is to summarize the current level of accumulated knowledge about the physical structure of solid surfaces with emphasis on well-defined surfaces at the gas-solid and vacuum-solid interfaces. The intention is not only to provide a standard reference for practitioners, but also to provide a good starting point for scientists who are just entering the field. The presentation in most of the chapters therefore assumes that the typical reader will have a good undergraduate background in chemistry, physics, or materials science. At the same time, coverage is comprehensive and at a high technical level with emphasis on fundamental physical principles. This first volume in a new series is appropriately devoted to the physical structure of surfaces, knowledge of which will be essential for a complete understanding of electronic properties and dynamical processes, the topics of the next two volumes in the series. The volume is divided into four parts. Part I describes the equilibrium properties of surfaces with emphasis on clean surfaces of bulk materials. Part II provides an introduction to some of the primary experimental methods that are used to determine surface crystal structures. Part III gives an overview of the vast topic of the structure of adsorbed layers. The concluding Part IV deals with the topics of defects in surface structures and phase transitions.


The Structure of Surfaces

The Structure of Surfaces
Author: M.A. Van Hove
Publisher: Springer Science & Business Media
Total Pages: 446
Release: 2012-12-06
Genre: Technology & Engineering
ISBN: 3642824935

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Community Structure and Co-operation in Biofilms

Community Structure and Co-operation in Biofilms
Author: Society for General Microbiology. Symposium
Publisher: Cambridge University Press
Total Pages: 366
Release: 2000-10-23
Genre: Medical
ISBN: 9780521793025

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The study of biofilm considers the close association of micro-organisms with each other at interfaces and is relevant to a variety of disciplines, including medicine, dentistry, bioremediation, biofouling, water technology, engineering and food science. Although the habitats studied differ widely, some common elements exist such as method of attachment, coadhesion and regulation of biofilm phenotype and architecture. This book aims to distil the common principles of biofilm physiology and growth for all interested disciplines.


Desalination

Desalination
Author:
Publisher:
Total Pages: 700
Release: 1997
Genre: Saline water conversion
ISBN:

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Elementary Electronic Structure

Elementary Electronic Structure
Author: Walter Ashley Harrison
Publisher: World Scientific
Total Pages: 866
Release: 2004
Genre: Technology & Engineering
ISBN: 9789812387080

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This is a revised edition of the 1999 text on the electronic structure and properties of solids, similar in spirit to the well-known 1980 text Electronic Structure and the Properties of Solids. The revisions include an added chapter on glasses, and rewritten sections on spin-orbit coupling, magnetic alloys, and actinides. The text covers covalent semiconductors, ionic insulators, simple metals, and transition-metal and f-shell-metal systems. It focuses on the most important aspects of each system, making what approximations are necessary in order to proceed analytically and obtain formulae for the properties. Such back-of-the-envelope formulae, which display the dependence of any property on the parameters of the system, are characteristic of Harrison's approach to electronic structure, as is his simple presentation and his provision of all the needed parameters.In spite of the diversity of systems and materials, the approach is systematic and coherent, combining the tight-binding (or atomic) picture with the pseudopotential (or free-electron) picture. This provides parameters ? the empty-core radii as well as the covalent energies ? and conceptual bases for estimating the various properties of all these systems. Extensive tables of parameters and properties are included.The book has been written as a text, with problems at the end of each chapter, and others can readily be generated by asking for estimates of different properties, or different materials, than those treated in the text. In fact, the ease of generating interesting problems reflects the extraordinary utility and simplicity of the methods introduced. Developments since the 1980 publication have made the theory simpler and much more accurate, besides allowing much wider application.


Coal Mine Roof Rating (CMRR)

Coal Mine Roof Rating (CMRR)
Author: Gregory M. Molinda
Publisher:
Total Pages: 92
Release: 1994
Genre: Coal mines and mining
ISBN:

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National Review

National Review
Author:
Publisher:
Total Pages: 486
Release: 1916
Genre: China
ISBN:

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