Fluctuation Theory of Solutions

Author: Paul E. Smith
Publisher: CRC Press
ISBN: 1439899231
Format: PDF, Mobi
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There are essentially two theories of solutions that can be considered exact: the McMillan–Mayer theory and Fluctuation Solution Theory (FST). The first is mostly limited to solutes at low concentrations, while FST has no such issue. It is an exact theory that can be applied to any stable solution regardless of the number of components and their concentrations, and the types of molecules and their sizes. Fluctuation Theory of Solutions: Applications in Chemistry, Chemical Engineering, and Biophysics outlines the general concepts and theoretical basis of FST and provides a range of applications described by experts in chemistry, chemical engineering, and biophysics. The book, which begins with a historical perspective and an introductory chapter, includes a basic derivation for more casual readers. It is then devoted to providing new and very recent applications of FST. The first application chapters focus on simple model, binary, and ternary systems, using FST to explain their thermodynamic properties and the concept of preferential solvation. Later chapters illustrate the use of FST to develop more accurate potential functions for simulation, describe new approaches to elucidate microheterogeneities in solutions, and present an overview of solvation in new and model systems, including those under critical conditions. Expert contributors also discuss the use of FST to model solute solubility in a variety of systems. The final chapters present a series of biological applications that illustrate the use of FST to study cosolvent effects on proteins and their implications for protein folding. With the application of FST to study biological systems now well established, and given the continuing developments in computer hardware and software increasing the range of potential applications, FST provides a rigorous and useful approach for understanding a wide array of solution properties. This book outlines those approaches, and their advantages, across a range of disciplines, elucidating this robust, practical theory.

Ions in Solution and their Solvation

Author: Yizhak Marcus
Publisher: John Wiley & Sons
ISBN: 1118892305
Format: PDF, Mobi
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The book starts with an exposition of the relevant properties of ions and continues with a description of their solvation in the gas phase. The book contains a large amount of factual information in the form of extensive tables of critically examined data and illustrations of the points made throughout. It covers: the relevant properties of prospective liquid solvents for the ions the process of the transfer of ions from the gas phase into a liquid where they are solvated various aspects of the solutions of the ions, such as structural and transport ones and the effects of the ions on the solvent dynamics and structure what happens in cases where the solvent is a mixture selective solvation takes place applications of the concepts expounded previously in fields such as electrochemistry, hydrometallurgy, separation chemistry, biophysics, and synthetic methods

The Potential Distribution Theorem and Models of Molecular Solutions

Author: Tom L. Beck
Publisher: Cambridge University Press
ISBN: 1139457632
Format: PDF, ePub, Docs
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An understanding of statistical thermodynamic molecular theory is fundamental to the appreciation of molecular solutions. This complex subject has been simplified by the authors with down-to-earth presentations of molecular theory. Using the potential distribution theorem (PDT) as the basis, the text provides a discussion of practical theories in conjunction with simulation results. The authors discuss the field in a concise and simple manner, illustrating the text with useful models of solution thermodynamics and numerous exercises. Modern quasi-chemical theories that permit statistical thermodynamic properties to be studied on the basis of electronic structure calculations are given extended development, as is the testing of those theoretical results with ab initio molecular dynamics simulations. The book is intended for students taking up research problems of molecular science in chemistry, chemical engineering, biochemistry, pharmaceutical chemistry, nanotechnology and biotechnology.

Lebensmittelphysik

Author: L.O. Figura
Publisher: Springer-Verlag
ISBN: 3540349901
Format: PDF, Docs
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Die Lebensmittelphysik befasst sich mit den physikalischen Eigenschaften der Lebensmittel und deren Erfassung. Die physikalischen Eigenschaften von Lebensmitteln spielen überall dort eine wesentliche Rolle, wo moderne lebensmitteltechnologische Verfahren für die Gewinnung der Rohstoffe oder die Herstellung eines Lebensmittels angewandt werden. Die Bestimmung physikalischer Größen von Lebensmitteln und Bedarfsgegenständen sind aus der Planung, Steuerung und Automatisierung der Herstellungsprozesse in der Lebensmittel-, Pharma- und Kosmetikindustrie und angrenzenden Bereichen nicht mehr wegzudenken. Neben der chemischen Qualitätskontrolle spielt die Bestimmung physikalischer Eigenschaften darüber hinaus eine wichtige Rolle bei der Bestimmung und Sicherung der Qualität unserer Lebensmittel. Der Konsument fordert zunehmend "weniger Chemie" in der Lebensmittelproduktion und große Bereiche der Lebensmittelindustrie werden diesen Wünschen in steigendem Maße entgegenkommen müssen, indem sie moderne physikalische Verfahren in der Produktion einsetzen. Auch hierfür ist ein grundlegendes Verständnis der physikalischen Eigenschaften von Lebensmitteln und den Möglichkeiten und Grenzen ihrer messtechnischen Erfassung eine unabdingbare Voraussetzung. Dieses Buch beschreibt die Lebensmittelphysik von Grund auf und orientiert sich hierbei ausschließlich an den Erfordernissen der Lebensmittelpraxis, ohne auf die wichtigen Grundlagen zu verzichten. Das Buch ist daher für Studenten der Lebensmittelchemie und -technologie an Universitäten und Fachhochschulen eine wichtige Quelle für die zukünftige Ausbildung. Auch Ingenieure, Technologen und Techniker in der Lebensmittelindustrie werden dieses Buch benutzen, um ihre Kenntnisse zu vertiefen oder grundlegendes Verständnis für neue physikalische Verfahren zu erwerben.