Ions in Water and Biophysical Implications
Ions in Water and Biophysical Implications

Author: Yizhak Marcus

Publisher: Springer Science & Business Media

Published: 2012-08-13

Total Pages: 224

ISBN-13: 9400746474

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Over the past decade, numerous books have attempted to explain ions in aqueous solutions in relation to biophysical phenomena. Ions in Water and Biophysical Implications, from Chaos to Cosmos offers a physicochemical point of view of the spread of this matter and suggests innovative solutions that will challenge the biophysics research establishment. Starting with a throughout discussion of the properties of liquid water, in particular as a structured liquid with an extensive hydrogen bonded structure, the book examines water as a solvent for gases, non-electrolytes, and electrolytes and reviews the properties, sizes and thermodynamics of isolated and aqueous ions, as well as their interactions, including those of polyelectrolytes. The effects of ions on water structure, including those on solvent dynamics and certain thermodynamic quantities, are presented. This volume investigates water surfaces with its vapour, with another liquid, and with a solid, as well as the effects of solutes, including simple ions and the water-miscible non-electrolytes. Surfaces are relevant to biomolecular and colloidal systems and the book discusses briefly surfactants, micelles and vesicles. Finally, the book concludes with a review of the various biophysical implications involving chaotropic and kosmotropic ions in homogeneous solutions and the Hofmeister series for ions concerning biomolecular and colloidal systems and some aspects of protein hydration and K+/Na+ selectivity in ion channels. Ions in Water and Biophysical Implications, from Chaos to Cosmos will appeal to physical chemists, biophysicists, biochemists, as well as to all students and researchers involved in the study of aqueous solutions.

Computational Pharmaceutics
Computational Pharmaceutics

Author: Defang Ouyang

Publisher: John Wiley & Sons

Published: 2015-07-20

Total Pages: 350

ISBN-13: 1118573994

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Molecular modeling techniques have been widely used in drug discovery fields for rational drug design and compound screening. Now these techniques are used to model or mimic the behavior of molecules, and help us study formulation at the molecular level. Computational pharmaceutics enables us to understand the mechanism of drug delivery, and to develop new drug delivery systems. The book discusses the modeling of different drug delivery systems, including cyclodextrins, solid dispersions, polymorphism prediction, dendrimer-based delivery systems, surfactant-based micelle, polymeric drug delivery systems, liposome, protein/peptide formulations, non-viral gene delivery systems, drug-protein binding, silica nanoparticles, carbon nanotube-based drug delivery systems, diamond nanoparticles and layered double hydroxides (LDHs) drug delivery systems. Although there are a number of existing books about rational drug design with molecular modeling techniques, these techniques still look mysterious and daunting for pharmaceutical scientists. This book fills the gap between pharmaceutics and molecular modeling, and presents a systematic and overall introduction to computational pharmaceutics. It covers all introductory, advanced and specialist levels. It provides a totally different perspective to pharmaceutical scientists, and will greatly facilitate the development of pharmaceutics. It also helps computational chemists to look for the important questions in the drug delivery field. This book is included in the Advances in Pharmaceutical Technology book series.

Ions in Solution and their Solvation
Ions in Solution and their Solvation

Author: Yizhak Marcus

Publisher: John Wiley & Sons

Published: 2015-06-18

Total Pages: 308

ISBN-13: 1118892275

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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

Thermal Biophysics of Membranes
Thermal Biophysics of Membranes

Author: Thomas Heimburg

Publisher: John Wiley & Sons

Published: 2008-02-08

Total Pages: 378

ISBN-13: 3527611606

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An overview of recent experimental and theoretical developments in the field of the physics of membranes, including new insights from the past decade. The author uses classical thermal physics and physical chemistry to explain our current understanding of the membrane. He looks at domain and 'raft' formation, and discusses it in the context of thermal fluctuations that express themselves in heat capacity and elastic constants. Further topics are lipid-protein interactions, protein binding, and the effect of sterols and anesthetics. Many seemingly unrelated properties of membranes are shown to be intimately intertwined, leading for instance to a coupling between membrane state, domain formation and vesicular shape. This also applies to non-equilibrium phenomena like the propagation of density pulses during nerve activity. Also included is a discussion of the application of computer simulations on membranes. For both students and researchers of biophysics, biochemistry, physical chemistry, and soft matter physics.

Biophysical Chemistry
Biophysical Chemistry

Author: John T. Edsall

Publisher: Academic Press

Published: 2014-05-12

Total Pages: 716

ISBN-13: 1483270580

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Biophysical Chemistry, Volume I: Thermodynamics, Electrostatics, and the Biological Significance of the Properties of Matter focuses on the biological aspects of the properties of matter, putting emphasis on the chemical elements, water and carbon dioxide, complex molecules, and proteins. The publication first elaborates on biochemistry and geochemistry, water and its biological significance, and the problems of protein structure. Discussions focus on the number of peptide chains in the molecule and nature of terminal groups, latent heat of fusion, characteristics of the amino acids derived from proteins, expansion of water in freezing, and the relative abundance of chemical elements in the universe. The text then takes a look at thermodynamics and the application to polar molecules and ionic solutions of electrostatics, including free energy of a charged sphere, image charges, salting-out effect, expressions for the change of fundamental thermodynamic functions, and chemical potentials. The book examines the conductivity of electrolytes, acid-base equilibria, and polybasic acids, bases, and ampholytes, including proteins. Topics include ionization of cysteine, isoelectric points of polyvalent ampholytes, hemoglobin, nature of acids and bases, measurement of conductivity, electrolytes as conductors, and the moving boundary method of determining transference numbers. The manuscript is a dependable reference for chemists and researchers interested in thermodynamics, electrostatics, and the biological value of the properties of matter.

Specific Ion Effects
Specific Ion Effects

Author: Werner Kunz

Publisher: World Scientific

Published: 2010

Total Pages: 347

ISBN-13: 9814271586

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Specific ion effects are important in numerous fields of science and technology. This book summarizes the main ideas that came up over the years. It presents the efforts of theoreticians and supports it by the experimental results stemming from various techniques.

Stomata Regulation and Water Use Efficiency in Plants under Saline Soil Conditions
Stomata Regulation and Water Use Efficiency in Plants under Saline Soil Conditions

Author:

Publisher: Academic Press

Published: 2022-05-10

Total Pages: 286

ISBN-13: 0323914748

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Advances in Botanical Research, Volume 103 provides a timely and comprehensive update on the current knowledge of stomata development and operation in salt-grown plants. The range of topics covered includes evolution of stomata for adaptation to saline conditions, comparative analysis of proteomic, transcriptomic and metabolomic profiles of stomata guard cells between halophytes and glycophyte species and their reprogramming under salt stress, the molecular nature of the signals that control stomata aperture and their integration at the cellular and whole-plant level, and ecophysiological aspects of stomata operation in crop and halophytes species. - Written by leading international experts in the field - Provides a comprehensive update on several hot topics in one volume - Integrates information at various levels of plant functional organization, from molecular to whole-plant level

Salinity Tolerance in Plants: Mechanisms and Regulation of Ion Transport
Salinity Tolerance in Plants: Mechanisms and Regulation of Ion Transport

Author: Vadim Volkov

Publisher: Frontiers Media SA

Published: 2018-01-12

Total Pages: 243

ISBN-13: 2889453693

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Life presumably arose in the primeval oceans with similar or even greater salinity than the present ocean, so the ancient cells were designed to withstand salinity. However, the immediate ancestors of land plants most likely lived in fresh, or slightly brackish, water. The fresh/brackish water origins might explain why many land plants, including some cereals, can withstand moderate salinity, but only 1 – 2 % of all the higher plant species were able to re-discover their saline origins again and survive at increased salinities close to that of seawater. From a practical side, salinity is among the major threats to agriculture, having been one of the reasons for the demise of the ancient Mesopotamian Sumer civilisation and in the present time causing huge annual economic losses of over 10 billion USD. The effects of salinity on plants include osmotic stress, disruption of membrane ion transport, direct toxicity of high cytoplasmic concentrations of sodium and chloride on cellular processes and induced oxidative stress. Ion transport is the crucial starting point that determines salinity tolerance in plants. Transport via membranes is mediated mostly by the ion channels and transporters, which ensure selective passage of specific ions. The molecular and structural diversity of these ion channels and transporters is amazing. Obtaining the detailed descriptions of distinct ion channels and transporters present in halophytes, marine algae and salt-tolerant fungi and then progressing to the cellular and the whole organism mechanisms, is one of the logical ways to understand high salinity tolerance. Transfer of the genes from halophytes to agricultural crops is a means to increase salt tolerance of the crops. The theoretical scientific approaches involve protein chemistry, structure-function relations of membrane proteins, synthetic biology, systems biology and physiology of stress and ion homeostasis. At the time of compiling this e-book many aspects of ion transport under salinity stress are not yet well understood. The e-book has attracted researchers in ion transport and salinity tolerance. We have combined our efforts to achieve a wider, more detailed understanding of salt tolerance in plants mediated by ion transport, to understand present and future ways to modify and manipulate ion transport and salinity tolerance and also to find natural limits for the modifications.

Bioelectrochemistry Research Developments
Bioelectrochemistry Research Developments

Author: Eias M. Bernstein

Publisher: Nova Publishers

Published: 2008

Total Pages: 260

ISBN-13: 9781604563603

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Bioelectrochemistry deals with the electrochemical aspects of biology and biological aspects of electrochemistry. This book presents recent and important advances in the field.