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Books > Science & Mathematics > Chemistry > Physical chemistry

Simulations in Nanobiotechnology (Paperback): Kilho Eom Simulations in Nanobiotechnology (Paperback)
Kilho Eom
R1,848 Discovery Miles 18 480 Ships in 12 - 17 working days

Until the late 20th century, computational studies of biomolecules and nanomaterials had considered the two subjects separately. A thorough presentation of state-of-the-art simulations for studying the nanoscale behavior of materials, Simulations in Nanobiotechnology discusses computational simulations of biomolecules and nanomaterials together. The book gives readers insight into not only the fundamentals of simulation-based characterizations in nanobiotechnology, but also in how to approach new and interesting problems in nanobiotechnology using basic theoretical and computational frameworks. Presenting the simulation-based nanoscale characterizations in biological science, Part 1: Describes recent efforts in MD simulation-based characterization and CG modeling of DNA and protein transport dynamics in the nanopore and nanochannel Presents recent advances made in continuum mechanics-based modeling of membrane proteins Summarizes theoretical frameworks along with atomistic simulations in single-molecule mechanics Provides the computational simulation-based mechanical characterization of protein materials Discussing advances in modeling techniques and their applications, Part 2: Describes advances in nature-inspired material design; atomistic simulation-based characterization of nanoparticles' optical properties; and nanoparticle-based applications in therapeutics Overviews of the recent advances made in experiment and simulation-based characterizations of nanoscale adhesive properties Suggests theoretical frameworks with experimental efforts in the development of nanoresonators for future nanoscale device designs Delineates advances in theoretical and computational methods for understanding the mechanical behavior of a graphene monolayer The development of experimental apparatuses has paved the way to observing physics at the nanoscale and opened a new avenue in the fundamental understanding of the physics of various objects such as biological materials and nanomaterials. With expert contributors from around the world, this book addresses topics such as the molecular dynamics of protein translocation, coarse-grained modeling of CNT-DNA interactions, multi-scale modeling of nanowire resonator sensors, and the molecular dynamics simulation of protein mechanics. It demonstrates the broad application of models and simulations that require the use of principles from multiple academic disciplines.

Surface and Nanomolecular Catalysis (Hardcover): Ryan Richards Surface and Nanomolecular Catalysis (Hardcover)
Ryan Richards
R6,434 Discovery Miles 64 340 Ships in 12 - 17 working days

Using new instrumentation and experimental techniques that allow scientists to observe chemical reactions and molecular properties at the nanoscale, the authors of Surface and Nanomolecular Catalysis reveal new insights into the surface chemistry of catalysts and the reaction mechanisms that actually occur at a molecular level during catalysis. While each chapter contains the necessary background and explanations to stand alone, the diverse collection of chapters shows how developments from various fields each contributed to our current understanding of nanomolecular catalysis as a whole.

The book describes how the size and shape of materials at the nanoscale can change their chemical and physical properties and promote more efficient reactions with fewer by-products. First it highlights the preparation, characterization, and applications of heterogeneous and supported metal catalysts. Then it covers the engineering of catalytic processes, structure and reaction control, and texturological properties of catalytic systems. The authors explain how surface science can elucidate reaction mechanisms and discuss the growing role of high-throughput experimentation and combinatorial approaches in catalysis.

From fundamental concepts to future directions, Surface and Nanomolecular Catalysis offers a well-rounded compilation of noteworthy developments which will continue to expand and transform our understanding of catalysis, particularly in the context of clean energy and environmental applications such as fuel cells.

Accurate Condensed-Phase Quantum Chemistry (Paperback): Fred Manby Accurate Condensed-Phase Quantum Chemistry (Paperback)
Fred Manby
R1,891 Discovery Miles 18 910 Ships in 12 - 17 working days

The theoretical methods of quantum chemistry have matured to the point that accurate predictions can be made and experiments can be understood for a wide range of important gas-phase phenomena. A large part of this success can be attributed to the maturation of hierarchies of approximation, which allow one to approach very high accuracy, provided that sufficient computational resources are available. Until recently, these hierarchies have not been available in condensed-phase chemistry, but recent advances in the field have now led to a group of methods that are capable of reaching this goal. Accurate Condensed-Phase Quantum Chemistry addresses these new methods and the problems to which they can be applied. The book begins with an overview of periodic treatments of electron correlation, with an emphasis on the algorithmic features responsible for their computational efficiency. The first section of the book: Describes the Laplace-transform approach to periodic second-order perturbation theory (MP2) Examines local and density fitted schemes for MP2 in crystalline systems Presents test calculations for a variety of systems with small and medium-sized unit cells The next section focuses on methods based on treatment of the periodic solid in terms of fragments. This part of the book: Explores the incremental many-body scheme for electron correlation in solids, and describes progress towards metals and molecules on surfaces Describes the hierarchical method as an alternative fragment-based approach to electron correlation in crystalline solids, using conventional molecular electronic structure methods Examines electrostatically embedded many-body expansion for large systems, with an emphasis on molecular clusters and molecular liquids Explores delocalized and localized orbital approaches to the electronic structures of periodic and non-periodic solids Lastly, the book describes a practical method by which conventional molecular electronic structure theory can be applied to molecular liquids and solids. Along with the methodology, it presents results on small to medium water clusters as well as on liquid water.

Handbook of Photochemistry (Hardcover, 3rd edition): Marco Montalti, Alberto Credi, Luca Prodi, M. Teresa Gandolfi Handbook of Photochemistry (Hardcover, 3rd edition)
Marco Montalti, Alberto Credi, Luca Prodi, M. Teresa Gandolfi
R6,002 Discovery Miles 60 020 Ships in 12 - 17 working days

Since the publication of the second edition of this handbook in 1993, the field of photochemical sciences has continued to expand across several disciplines including organic, inorganic, physical, analytical, and biological chemistries, and, most recently, nanosciences. Emphasizing the important role light-induced processes play in all of these fields, the Handbook of Photochemistry, Third Edition provides quick and convenient access to chemical and physical data that are crucial to photochemical investigations from the planning and experimentation phases to the interpretation of results. The third edition of the Handbook of Photochemistry offers detailed overviews of the photochemical processes that occur in organic molecules and transition metal complexes, written by leading experts around the world. The authors maintain the highly regarded organization of data from previous editions while updating and expanding its tables with data pertaining to hundreds of new compounds. The book now contains sections focusing on metal complexes and organometallic compounds, offering photophysical and quenching data as well as reduction potential values, a key factor in photochemical electron transfer processes. It also features new information on light sources and filters, chemical actinometry, solutions to common problems in photoluminescence measurements, and lab-friendly techniques pertaining to experimental UV/visible spectroscopy and irradiation methodologies. The Handbook of Photochemistry delivers an exhaustive, up-to-date collection of photophysical and electrochemical data on organic compounds and transition metal complexes. It represents an invaluable compilation of complementary data, background information, and references for students, researchers, and spectroscopists performing a vast assortment of photochemical experiments.

Colloid and Surface Chemistry - A Laboratory Guide for Exploration of the Nano World (Paperback): Seyda Bucak, Deniz Rende Colloid and Surface Chemistry - A Laboratory Guide for Exploration of the Nano World (Paperback)
Seyda Bucak, Deniz Rende
R1,956 Discovery Miles 19 560 Ships in 12 - 17 working days

With principles that are shaping today's most advanced technologies, from nanomedicine to electronic nanorobots, colloid and interface science has become a truly interdisciplinary field, integrating chemistry, physics, and biology. Colloid and Surface Chemistry: Exploration of the Nano World- Laboratory Guide explains the basic principles of colloid and interface science through experiments that emphasize the fundamentals. It bridges the gap between the underlying theory and practical applications of colloid and surface chemistry. Separated into five chapters, the book begins by addressing research methodology, how to design successful experiments, and ethics in science. It also provides practical information on data collection and analysis, keeping a laboratory notebook, and writing laboratory reports. With each section written by a distinguished researcher, chapter 2 reviews common techniques for the characterization and analysis of colloidal structures, including surface tension measurements, viscosity and rheological measurements, electrokinetic methods, scattering and diffraction techniques, and microscopy. Chapters 3-5 provide 19 experiments, each including the purpose of the experiment, background information, pre-laboratory questions, step-by-step procedures, and post-laboratory questions. Chapter 3 contains experiments about colloids and surfaces, such as sedimentation, exploration of wetting phenomena, foam stability, and preparation of miniemulsions. Chapter 4 covers various techniques for the preparation of nanoparticles, including silver, magnetic, and silica nanoparticles. Chapter 5 demonstrates daily-life applications of colloid science, describing the preparation of food colloids, body wash, and body cream.

Catalysis of Organic Reactions (Paperback): Jr., John R. Sowa Catalysis of Organic Reactions (Paperback)
Jr., John R. Sowa
R2,004 Discovery Miles 20 040 Ships in 12 - 17 working days

This volume compiles 63 peer-reviewed scientific papers documenting the latest developments in the application of homogeneous, heterogeneous, and immobilized homogenous catalysts used in organic synthesis. Catalysis of Organic Reactions consists of primary research articles accompanied by experimental sections that emphasize chemical processes with actual and potential applications in industry. Each chapter represents current and outstanding research by recognized leaders in the field. Organized into five major symposia, topics include selective homogeneous and heterogeneous catalysis for the synthesis of fine chemical and pharmaceuticals, solid acid catalysis, selective oxidation, amination, chiral catalysis, combinatorial technologies, nanoparticles, environmentally friendly catalysis, and more. The collection also presents the award-winning research of Jean Lessard, concerning the scope and limitations of electrocatalytic hydrogenation of organic compounds at Raney Metal Electrodes, and Richard Larock, relating to palladium-catalyzed annulation and migration reactions. These proceedings are of interest to the chemical scientists and engineers whose special interest is to apply homogenous and heterogeneous catalysts in organic synthesis of pharmaceutical, fine, and commodity chemicals.

Water at Interfaces - A Molecular Approach (Paperback): Jordi Fraxedas Water at Interfaces - A Molecular Approach (Paperback)
Jordi Fraxedas
R1,863 Discovery Miles 18 630 Ships in 12 - 17 working days

Water, with its simple molecular structure, reveals a complex nature upon interaction with other molecules and surfaces. Water at Interfaces: A Molecular Approach provides a broad, multidisciplinary introduction to water at interfaces, focusing on its molecular characteristics. The book considers interfaces at different length scales from single water molecules to involvement of large numbers of water molecules, and from one-dimensional to three-dimensional interfaces. It begins with individual water molecules, describing their basic properties and the fundamental concepts that form the basis of this book. The text explores the main interfaces involving pure and ion-free condensed (liquid and solid) water, including water vapor/liquid water, liquid/oil, and liquid/solid interfaces. It examines water molecules on ideal surfaces-well-ordered (crystalline) and defect-free-covering topics such as electronic structure using frontier orbitals and substrate-induced structuring. The book discusses the affinity of water to surfaces, hydrophobicity and hydrophilicity, emphasizing two extreme cases of affinity. It then addresses real solid surfaces where water/solid interfaces play a key role in actual working conditions, examining water purification, photocatalytic activity, corrosion and degradation, and atmospheric agents. The final chapter deals with the interaction of water with the heterogeneous and complex surfaces of biomolecules, which can both influence the structure of the surrounding water and be modulated by the surrounding liquid. The author discusses simple to more complex biomolecules from peptides to proteins, nucleic acids, and membranes.

Conceptual Density Functional Theory and Its Application in the Chemical Domain (Hardcover): Nazmul Islam, Savas Kaya Conceptual Density Functional Theory and Its Application in the Chemical Domain (Hardcover)
Nazmul Islam, Savas Kaya
R3,843 Discovery Miles 38 430 Ships in 12 - 17 working days

In this book, new developments based on conceptual density functional theory (CDFT) and its applications in chemistry are discussed. It also includes discussion of some applications in corrosion and conductivity and synthesis studies based on CDFT. The electronic structure principles-such as the electronegativity equalization principle, the hardness equalization principle, the electrophilicity equalization principle, and the nucleophilicity equalization principle, along studies based on these electronic structure principles-are broadly explained. In recent years some novel methodologies have been developed in the field of CDFT. These methodologies have been used to explore mutual relationships between the descriptors of CDFT, namely electronegativity, hardness, etc. The mutual relationship between the electronegativity and the hardness depend on the electronic configuration of the neutral atomic species. The volume attempts to cover almost all such methodology. Conceptual Density Function Theory and Its Application in the Chemical Domain will be an appropriate guide for research students as well as the supervisors in PhD programs. It will also be valuable resource for inorganic chemists, physical chemists, and quantum chemists. The reviews, research articles, short communications, etc., covered by this book will be appreciated by theoreticians as well as experimentalists.

Coagulation and Flocculation (Hardcover, 2nd edition): Bohuslav Dobias, Hansjoachim Stechemesser Coagulation and Flocculation (Hardcover, 2nd edition)
Bohuslav Dobias, Hansjoachim Stechemesser
R7,533 Discovery Miles 75 330 Ships in 9 - 15 working days

First published in 1993, Coagulation and Flocculation is a practical reference for the researchers in the field of the stabilization and destabilization of fine solid dispersions. By omitting chapters that remained unchanged from the first edition, the editors of this second edition completely update, rewrite, and expand upon all chapters to reflect a decade of the latest advances in both theoretical and application aspects of the field. The authors provide expanded material that includes dissociation from a solid surface with independent sites; improvements to the Gouy-Chapman model; electrical double layer, surface ionization, and surface heterogeneity; thin liquid films and modeling of a semi-batch process using microprocesses probabilities; and clay mineral intracrystalline reactions, applications, and gelation. New chapters cover homopolymers and their effect on colloid stability, including never before published figures and equations; the stability of suspensions in the presence of surfactants, polymers, and mixtures; and the flocculation and dewatering of fine-particle suspensions, emphasizing floc formation, growth, structure, and applications. The second edition of Coagulation and Flocculation effectively captures both the theoretical and application aspects of the latest advances in the evolving field of solid dispersions, suspensions, and mixtures.

Organic Photovoltaics - Mechanisms, Materials, and Devices (Hardcover, New): Sam-Shajing Sun, Niyazi Serdar Sariciftci Organic Photovoltaics - Mechanisms, Materials, and Devices (Hardcover, New)
Sam-Shajing Sun, Niyazi Serdar Sariciftci
R7,049 Discovery Miles 70 490 Ships in 12 - 17 working days

Recently developed organic photovoltaics (OPVs) show distinct advantages over their inorganic counterparts due to their lighter weight, flexible shape, versatile materials synthesis and device fabrication schemes, and low cost in large-scale industrial production. Although many books currently exist on general concepts of PV and inorganic PV materials and devices, few are available that offer a comprehensive overview of recently fast developing organic and polymeric PV materials and devices.

Organic Photovoltaics: Mechanisms, Materials, and Devices fills this gap. The book provides an international perspective on the latest research in this rapidly expanding field with contributions from top experts around the world. It presents a unified approach comprising three sections: General Overviews; Mechanisms and Modeling; and Materials and Devices. Discussions include sunlight capture, exciton diffusion and dissociation, interface properties, charge recombination and migration, and a variety of currently developing OPV materials/devices. The book also includes two forewords: one by Nobel Laureate Dr. Alan J. Heeger, and the other by Drs. Aloysius Hepp and Sheila Bailey of NASA Glenn Research Center.

Organic Photovoltaics equips students, researchers, and engineers with knowledge of the mechanisms, materials, devices, and applications of OPVs necessary to develop cheaper, lighter, and cleaner renewable energy throughout the coming decades.

Supramolecular Coordination Complexes - Design, Synthesis, and Applications (Paperback): Sankarasekaran Shanmugaraju Supramolecular Coordination Complexes - Design, Synthesis, and Applications (Paperback)
Sankarasekaran Shanmugaraju
R4,135 Discovery Miles 41 350 Ships in 12 - 17 working days

Supramolecular Coordination Complexes: Design, Synthesis, and Applications discusses the growth of the field and explores the advantages, opportunities and latest applications of supramolecular complexes. Beginning with an introduction to design principles, synthetic methods, and post-synthetic functionalization of supramolecular complexes, the book goes on to compile the different analytical and computational modeling methods used to understand the structure and functional properties of supramolecular structures. Applications of supramolecular complexes in biomedicine, sensing, catalysis and materials are then explored in detail. Drawing on the knowledge of a global team of experts, this book provides a wealth of interesting information for students and researchers working in the design, synthesis or application of such complexes.

Molecular Modeling Techniques In Material Sciences (Hardcover): Joerg-Rudiger Hill, Lalitha Subramanian, Amitesh Maiti Molecular Modeling Techniques In Material Sciences (Hardcover)
Joerg-Rudiger Hill, Lalitha Subramanian, Amitesh Maiti
R3,580 R2,005 Discovery Miles 20 050 Save R1,575 (44%) Ships in 12 - 17 working days

Increasingly useful in materials research and development, molecular modeling is a method that combines computational chemistry techniques with graphics visualization for simulating and predicting the structure, chemical processes, and properties of materials.

Molecular Modeling Techniques in Materials Science explores the impact of using molecular modeling for various simulations in industrial settings. It provides an overview of commonly used methods in atomistic simulation of a broad range of materials, including oxides, superconductors, semiconductors, zeolites, glass, and nanomaterials. The book presents information on how to handle different materials and how to choose an appropriate modeling method or combination of techniques to better predict material behavior and pinpoint effective solutions. Discussing the advantages and disadvantages of various approaches, the authors develop a framework for identifying objectives, defining design parameters, measuring accuracy/accounting for error, validating and assessing various data collected, supporting software needs, and other requirements for planning a modeling project. The book integrates the remarkable developments in computation, such as advanced graphics and faster, cheaper workstations and PCs with new advances in theoretical techniques and numerical algorithms.

Molecular Modeling Techniques in Materials Science presents the background and tools for chemists and physicists to perform "in-silico" experiments to understand relationships between the properties of materials and the underlying atomic structure. These insights result in more accurate data for designing application-specific materials that withstand real processconditions, including hot temperatures and high pressures.

Modern Optics and Photonics of Nano-  and Microsystems (Hardcover): Yu. N. Kulchin Modern Optics and Photonics of Nano- and Microsystems (Hardcover)
Yu. N. Kulchin
R6,227 Discovery Miles 62 270 Ships in 12 - 17 working days

This book cover advances in the study of processes of nonlinear propagation of continuous and pulsed laser radiation in a continuous and micro structured optical media. It details distributed fiber-optical measuring systems, the physical basis of ultra-low laser cooling of atoms, and studies of optical and nonlinear optical properties of nanostructured heterogeneous systems.

Principles and Advances in Supramolecular Catalysis (Hardcover): Jubaraj Bikash Baruah Principles and Advances in Supramolecular Catalysis (Hardcover)
Jubaraj Bikash Baruah
R4,140 Discovery Miles 41 400 Ships in 12 - 17 working days

Supramolecular catalysis is involved in assimilation or growth of biological products and it has advantages over conventional catalysis in dealing with systems beyond molecules to mimic the biological catalytic processes. Principles and Advances in Supramolecular Catalysis shows how a supramolecular catalytic reaction proceeds and how interactions among molecules provide vessels or specific binding sites to carry out chemical reactions. The utilities of such catalytic reactions in waste, hazard management, medicine, food, etc. are explained in this book. The book focuses on examples to provide a fundamental basis so that, in the future, supramolecular catalytic reactions are utilised in the field of chemical, biological, biophysical sciences and technologies. Features: Discusses fundamental and interdisciplinary aspects of supramolecular catalysis Narrates mechano-chemical and stimuli-guided supramolecular catalytic reactions Divulges the intriguing aspects of self-replications and self-assembling performed through supramolecular catalysis Incorporates supramolecular catalytic reactions of metal-organic frameworks as artificial metalloenzymes

Fundamentals of Molecular Symmetry (Paperback): P.R. Bunker, P. Jensen Fundamentals of Molecular Symmetry (Paperback)
P.R. Bunker, P. Jensen
R2,266 Discovery Miles 22 660 Ships in 12 - 17 working days

Molecular symmetry operations provide an easily applied tool for understanding and predicting molecular properties, including certain reaction dynamics and quantum mechanical descriptions of molecules. Traditionally the molecular approach has been taught through point group and rotational symmetries (Schonflies notation and group theory) to undergraduates and graduates in chemistry, physics and material science and then these are applied to understanding various molecular properties. molecular symmetry, which leads to a greater insight into the application of symmetry in predicting and explaining the observational spectroscopic results and quantum mechanical applications, but also yields the simpler idealised symmetry operations for 'simple' molecules. This more in depth approach is needed by chemical physicists and physical chemists for detailed spectroscopic analysis of molecular materials (and has applications from characterising new compounds, understanding electronic structure and reaction dynamics to exploring the composition of interstellar gas) and quantum mechanical applications. This text provides a through grounding in molecular symmetry and group theory suitable for undergraduates and more detailed applications needed by graduate students and researchers in molecular physics, chemical physics, physical chemistry and solid state physics.

Electrogenerated Chemiluminescence (Hardcover, New): Allen J. Bard Electrogenerated Chemiluminescence (Hardcover, New)
Allen J. Bard
R6,434 Discovery Miles 64 340 Ships in 12 - 17 working days

The first comprehensive source on this ever-expanding analytical science, this reference explores recent advances in the instrumentation, design, and application of techniques utilizing electrogenerated chemiluminescence (ECL)-examining the use and impact of ECL-based assays in clinical diagnostics, life science research, environmental testing, food and water evaluation, and the detection of biowarfare agents. Compiled by the pioneer of this highly innovative technology, Electrogenerated Chemiluminescence surveys the use of ECL systems for the development of light-emitting devices, as well as the measurement and identification of biologically important compounds. It provides more than 1150 references, 240 tables, and contributions from 16 leading authorities on the subject, identifying promising research pathways, trends, challenges and topics of vital importance to field progression.; It discusses the simulation of ECL behavior using commercial software, summarizes key characteristics of the most common organic ECL systems, covers the latest developments in metal chelate ECL, and describes the use of flow injection, liquid chromatography, and capillary electrophoresis in conjunctio

Applied Organic Chemistry Reaction Mechanisms and Experimental Procedures in Medicinal Chemistry (Hardcover): S.K. De Applied Organic Chemistry Reaction Mechanisms and Experimental Procedures in Medicinal Chemistry (Hardcover)
S.K. De
R8,653 R7,118 Discovery Miles 71 180 Save R1,535 (18%) Ships in 9 - 15 working days

An indispensable guide for all synthetic chemists who want to learn about the most relevant reactions and reagents employed to synthesize important heterocycles and drugs! The synthesis of natural products, bioactive compounds, pharmaceuticals, and drugs is of fundamental interest in modern organic chemistry. New reagents and reaction methods towards these molecules are being constantly developed. By understanding the mechanisms involved and scope and limitations of each reaction applied, organic chemists can further improve existing reaction protocols and develop novel efficient synthetic routes towards frequently used drugs, such as Aspirin or Penicillin. Applied Organic Chemistry provides a summary of important (name) reactions and reagents applied in modern organic chemistry and drug synthesis. It covers rearrangement, condensation, olefination, metathesis, aromatic electrophilic substitutions, Pd-catalyzed C-C bond forming reactions, multi-component reactions, as well as oxidations and reductions. Each chapter is clearly structured, providing valuable information on reaction details, step-by-step mechanism, experimental procedures, applications, and (patent) references. By providing mechanistic information and representative experimental procedures, this book is an indispensable guide for researchers and professionals in organic chemistry, natural product synthesis, pharmaceutical, and medicinal chemistry, as well as post-graduates preparing themselves for a job in the pharmaceutical industry. Hot Topic: Reviews important classes of organic reactions (incl. name reactions) and reagents in medicinal chemistry. Useful: Provides information on reaction details, common reagents, and functional group transformations used to synthesize natural products, bioactive compounds, drugs, and pharmaceuticals, e.g. Aspirin, Penicillin. Unique: For every reaction the mechanism is explained step by step, and representative experimental procedures are given, unlike most books in this area. User-friendly: Chapters are clearly structured making it easy for the reader to compare different reactions. Applied Organic Chemistry is an indispensable guide for researchers and professionals in organic chemistry, natural product synthesis, pharmaceutical, and medicinal chemistry, as well as post-graduates preparing themselves for a job in the pharmaceutical industry.

Juvenile Hormones and Juvenoids - Modeling Biological Effects and Environmental Fate (Paperback): James Devillers Juvenile Hormones and Juvenoids - Modeling Biological Effects and Environmental Fate (Paperback)
James Devillers
R1,886 Discovery Miles 18 860 Ships in 12 - 17 working days

Juvenile hormones (JHs) are a group of structurally related sesquiterpenes secreted by the insect corpora allata. They affect most insect life-cycle stages and physiological functions, including embryogenesis, larval and adult development, metamorphosis, reproduction, metabolism, diapause, polyethism, and migration. Juvenoids such as methoprene, hydroprene, kinoprene, pyriproxyfen, and fenoxycarb are man-made chemicals that mimic the structure and/or activity of JHs, selectively targeting and disrupting the endocrine system of insects. They are particularly suited as larvicides for the control of pest and disease vectoring insects such as mosquitoes. Juvenile Hormones and Juvenoids: Modeling Biological Effects and Environmental Fate discusses the various modeling approaches that can be used to study the mechanism of action of JHs in insects and to estimate the adverse effects and the environmental fate of the juvenoids that mimic their activity. This book is the third of the QSAR in Environmental and Health Sciences series, but the first dedicated to the use of QSAR and other in silico techniques to provide these insights into JHs and their analogs. With contributions by an international team of scientists, the book begins with a historical survey of JHs and juvenoids. It then discusses biosynthesis of sesquiterpenoids followed by chapters covering JH activity such as morph-specific JH titers in crickets, and JH analog activity including soldier-specific organ development in termites and the role of methoprene in gene transcription. The book examines modeling approaches applied to resistance to JH analogs, to population dynamics of nontarget species in the presence of juvenoids, and to SAR and QSAR of JH mimics. The book concludes with a discussion on the use of multicriteria analysis for selecting insecticides for vector control.

Chemical Structure, Spatial Arrangement - The Early History of Stereochemistry, 1874-1914 (Hardcover, New edition): Peter J.... Chemical Structure, Spatial Arrangement - The Early History of Stereochemistry, 1874-1914 (Hardcover, New edition)
Peter J. Ramberg
R4,159 Discovery Miles 41 590 Ships in 12 - 17 working days

Offering a comprehensive narrative of the early history of stereochemistry, Dr Ramberg explores the reasons for and the consequences of the fundamental change in the meaning of chemical formulas with the emergence of stereochemistry during the last quarter of the nineteenth century. As yet relatively unexplored by historians, the development of stereochemistry - the study of the three-dimensional properties of molecules - provides a superb case study for exploring the meaning and purpose of chemical formulas, as it entailed a significant change in the meaning of chemical formulas from the purely chemical conception of 'structure' to the physico-chemical conception of molecules provided by the tetrahedral carbon atom. This study is the first to treat the emergence of the unique visual language of organic chemistry between 1830 and 1874 to place in context the near simultaneous proposal of the tetrahedral carbon atom by J.H. van 't Hoff and J.A. Le Bel in 1874. Dr Ramberg then examines the research programs in stereochemistry by Johannes Wislicenus, Arthur Hantzsch, Victor Meyer, Carl Bischoff, Emil Fischer and Alfred Werner, showing how the emergence of stereochemistry was a logical continuation of established research traditions in chemistry. In so doing, he also illustrates the novel and controversial characteristics of stereochemical ideas, especially the unprecedented use of mechanistic and dynamic principles in chemical explanation.

Understanding Physics and Physical Chemistry Using Formal Graphs (Paperback): Eric Vieil Understanding Physics and Physical Chemistry Using Formal Graphs (Paperback)
Eric Vieil
R1,944 Discovery Miles 19 440 Ships in 12 - 17 working days

The subject of this book is truly original. By encoding of algebraic equations into graphs-originally a purely pedagogical technique-the exploration of physics and physical chemistry reveals common pictures through all disciplines. The hidden structure of the scientific formalism that appears is a source of astonishment and provides efficient simplifications of the representation of physical laws. Understanding Physics and Physical Chemistry Using Formal Graphs is organized according to the structures emerging from formal graphs, from simple to elaborate, providing after each series of case studies the theoretical elements necessary for understanding their common features. More than 80 case studies are tackled in domains ranging from translational mechanics to Newtonian gravitation to chemical reactions. With the help of this new tool, the modeling of physical phenomena becomes a fascinating cross-disciplinary exploration. The graphs encourage a visual, unified comprehension of the relationships between physical concepts and variables, properties, and operators. Out-of-the-box and thought provoking, this book inspires lively discussions and fruitful thinking about the connections between mechanics, chemical reactivity, electrodynamics, thermodynamics, and more.

Bio Products - Green Materials for an Emerging Circular and Sustainable Economy (Paperback): Bhima R. Vijayendran Bio Products - Green Materials for an Emerging Circular and Sustainable Economy (Paperback)
Bhima R. Vijayendran
R2,577 R1,957 Discovery Miles 19 570 Save R620 (24%) Ships in 10 - 15 working days

The book is focused on Bioprodcuts derived from renewable resources processed by conventional catalytic thermochemical processes and or emerging bioprocessing techniques including fermentation and synthetic biology. It highlights some of these developments-from discovery, lab feasibility, scale up and eventual commercialization.

Thermal Decomposition and Combustion of Explosives and Propellants (Hardcover): G.B. Manelis Thermal Decomposition and Combustion of Explosives and Propellants (Hardcover)
G.B. Manelis
R6,409 Discovery Miles 64 090 Ships in 12 - 17 working days


This unique monograph investigates the synthesis, properties and processing of energetic materials and propellant compositions. The thermal decomposition of energetic compounds, such as aliphatic and aromatic nitrocompounds, nitramines, nitroethers, organic azides and difluoroamines, polynitrous heterocycles, and onium salts of different acids, the most important components of modern propellants, are given. The kinetics and mechanisms of chemical reactions for both real and model compounds are presented and the classic problem of the dependence of explosive activity on molecular structure is examined.

New methods for a formal kinetic description of decay of condensed substances, the determination of the energy of bond rupture in polyfunctional compounds and the theory of solid-phase reactions are also given. Applications to problems of predicting the stability, compatibility, and the stabilization of explosives and propellant components are included.

The book will be of interest to graduate students, researchers and professionals in industry interested in chemical kinetics and the combustion of energetic materials.

Photochemistry of Organic Molecules in Isotropic and Anisotropic Media (Hardcover): V. Ramamurthy, Kirk S. Schanze Photochemistry of Organic Molecules in Isotropic and Anisotropic Media (Hardcover)
V. Ramamurthy, Kirk S. Schanze
R8,509 Discovery Miles 85 090 Ships in 12 - 17 working days

This text discusses di-p-methane rearrangements via radical-cation intermediates, the photo-Fries rearrangement in organized media and of biologically active compounds, electron transfer leading to fragmentation, dimerization, and nucleophilic capture, and the characterization and reactivity of photochemically generated phenylene bis(diradical) species. The authors reveal experimental and computational techniques for the study of phenylene-linked carbenes and nitrenes. Brimming with over 900 references, Photochemistry of Organic Molecules in Isotropic and Anisotropic Media is crucial for professionals and students in photochemistry; chemical engineering; materials and semiconductor science; and organic, inorganic, and physical chemistry.

Physical Science (Paperback): Carson Dellosa Education Physical Science (Paperback)
Carson Dellosa Education
R372 R314 Discovery Miles 3 140 Save R58 (16%) Ships in 10 - 15 working days
Friction-Induced Vibrations and Self-Organization - Mechanics and Non-Equilibrium Thermodynamics of Sliding Contact... Friction-Induced Vibrations and Self-Organization - Mechanics and Non-Equilibrium Thermodynamics of Sliding Contact (Paperback)
Michael Nosonovsky, Vahid Mortazavi
R2,802 Discovery Miles 28 020 Ships in 12 - 17 working days

Many scientists and engineers do not realize that, under certain conditions, friction can lead to the formation of new structures at the interface, including in situ tribofilms and various patterns. In turn, these structures-usually formed by destabilization of the stationary sliding regime-can lead to the reduction of friction and wear. Friction-Induced Vibrations and Self-Organization: Mechanics and Non-Equilibrium Thermodynamics of Sliding Contact combines the mechanical and thermodynamic methods in tribology, thus extending the field of mechanical friction-induced vibrations to non-mechanical instabilities and self-organization processes at the frictional interface. The book also relates friction-induced self-organization to novel biomimetic materials, such as self-lubricating, self-cleaning, and self-healing materials. Explore Friction from a Different Angle-as a Fundamental Force of Nature The book begins with an exploration of friction as a fundamental force of nature throughout the history of science. It then introduces general concepts related to vibrations, instabilities, and self-organization in the bulk of materials and at the interface. After presenting the principles of non-equilibrium thermodynamics as they apply to the interface, the book formulates the laws of friction and highlights important implications. The authors also analyze wear and lubrication. They then turn their attention to various types of friction-induced vibration, and practical situations and applications where these vibrations are important. The final chapters consider various types of friction-induced self-organization and how these effects can be used for novel self-lubricating, self-cleaning, and self-healing materials. From Frictional Instabilities to Friction-Induced Self-Organization Drawing on the authors' original research, this book presents a new, twenty-first century perspective on friction and tribology. It shows how friction-induced instabilities and vibrations can lead to self-organized structures, and how understanding the structure-property relationships that lead to self-organization is key to designing "smart" biomimetic materials.

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