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Books > Science & Mathematics > Chemistry > Analytical chemistry
Detection of concealed explosives is a notoriously difficult problem, and many different approaches have been proposed to solve this problem. Nuclear quadrupole resonance (NQR) is unique in many ways. It operates in a safe AM radio frequency range, and it can remotely detect unique fingerprint (NQR spectrum) of many explosives, such as TNT or RDX. As such, the detection of target does not depend on the shape or material of the container, or the presence of metallic object such as triggers etc. Spectra of chemically similar compounds differ enough that their presence never causes interference or false alarms. Unfortunately, widespread use is prevented due to low sensitivity, radiofrequency interference from the noisy environment, and inability to detect liquid explosives. This book presents current state of the art of the attempts to overcome NQR sensitivity problem, either by increasing the strengths of signals generated, or by increasing the specificity of the technique through a better understanding of the factors that affect the quadrupolar parameters of specific explosives. The use of these specific quadrupolar parameters is demonstrated on signal processing techniques that can detect weak signals, which are hidden in a noisy background. The problem of differentiation of liquid explosives and benign liquids in closed containers is approached by measurements of different nuclear magnetic resonance (NMR) parameters. As shown, a couple of solutions has reached a prototype stage and could find their use in a near future."
High pressure, or high performance, liquid chromatography (HPLC) is
the method of choice for checking purity of new drug candidates,
monitoring changes during scale up or revision of synthetic
procedures, evaluating new formulations, and running
control/assurance of the final drug product. HPLC Method
Development for Pharmaceuticals provides an extensive overview of
modern HPLC method development that addresses these unique
concerns. Includes a review and update of the current state of the
art and science of HPLC, including theory, modes of HPLC, column
chemistry, retention mechanisms, chiral separations, modern
instrumentation (including ultrahigh-pressure systems), and sample
preparation. Emphasis has been placed on implementation in a
pharmaceutical setting and on providing a practical perspective.
Biosensors are making a large impact in environmental, food, biomedical, and other applications. In comparison to standard analytical detection methods, such as minimal sample preparation and handling, they offer advantages including real time detection, rapid detection of the analytes of concern, use of non-skilled personnel, and portability. The aim of this book is to focus on research related to the rapid detection of agents and weapons of bioterrorism and provide a comprehensive review of the research topics most pertinent to advancing devices applicable to the rapid real-time detection of toxicants such as microbes, pathogens, toxins, or nerve gases. The ongoing war on terrorism and the rising security concerns are driving the need for newer faster biosensors against bio-warfare agents for both military and civil defence applications. The volume brings together contributions from the most eminent international researchers in the field, covering various aspects of work not so far published in any scientific journal and often going beyond the "state of art" . Readers of these review articles will learn new technological schemes that can lead to the construction of devices that will minimize the risk of bio-terrorism."
The Hydrogen Bond and the Water Molecule offers a synthesis of what
is known and currently being researched on the topic of hydrogen
bonds and water molecules. The most simple water molecular, H2O, is
a fascinating but poorly understood molecule. Its unique ability to
attract an exceptionally large number of hydrogen bonds induces the
formation of a dense "hydrogen bond network" that has the potential
to modify the properties of the surrounding molecules and their
reactivities. The crucial role that water molecules play is
described in this book. The author begins by providing an overview
of the thermodynamical and structural properties of H-bonds before
examining their much less known dynamical properties, which makes
them appear as centres of reactivity. Methods used to observe these
components are also reviewed. In the second part of the book the
role played by the dense H-bond network developed by H2O molecules
is examined. First in ice, where it has important atmospheric
consequences, then in liquid water, and finally in macromolecules
where it sheds some original light on the fundamental question "How
is it that without water and hydrogen bonds life would not exist?."
MALDI-ToF Mass Spectrometry for Studying Noncovalent Complexes of Biomolecules, by Stefanie Madler, Elisabetta Boeri Erba, Renato Zenobi Application of MALDI-TOF-Mass Spectrometry to Proteome Analysis Using Stain-Free Gel Electrophoresis, by Iuliana Susnea, Bogdan Bernevic, Michael Wicke, Li Ma, Shuying Liu, Karl Schellander, Michael Przybylski MALDI Mass Spectrometry for Nucleic Acid Analysis, by Xiang Gao, Boon-Huan Tan, Richard J. Sugrue, Kai Tang Determination of Peptide and Protein Disulfide Linkages by MALDI Mass Spectrometry, by Hongmei Yang, Ning Liu, Shuying Liu MALDI In-Source Decay, from Sequencing to Imaging, by Delphine Debois, Nicolas Smargiasso, Kevin Demeure, Daiki Asakawa, Tyler A. Zimmerman, Loic Quinton, Edwin De Pauw Advances of MALDI-TOF MS in the Analysis of Traditional Chinese Medicines, by Minghua Lu, Zongwei Cai Chemical and Biochemical Applications of MALDI TOF-MS Based on Analyzing the Small Organic Compounds, by Haoyang Wang, Zhixiong Zhao, Yinlong Guo Bioinformatic Analysis of Data Generated from MALDI Mass Spectrometry for Biomarker Discovery, by Zengyou He, Robert Z. Qi, Weichuan Yu
The two volumes of Handbook of Gas Sensor Materials provide a detailed and comprehensive account of materials for gas sensors, including the properties and relative advantages of various materials. Since these sensors can be applied for the automation of myriad industrial processes, as well as for everyday monitoring of such activities as public safety, engine performance, medical therapeutics, and in many other situations, this handbook is of great value. Gas sensor designers will find a treasure trove of material in these two books.
Specialist Periodical Reports provide systematic and critical review coverage in major areas of chemical research. Compiled by teams of leading authorities in the relevant subject, the series creates a unique service for the active research chemist with regular critical in-depth accounts of progress in particular areas of chemistry. Subject coverage of all volumes is very similar and publication is on an annual or biennial basis. As EPR continues to find new applications in virtually all areas of modern science, including physics, chemistry, biology and materials science, this series caters not only for experts in the field, but also those wishing to gain a general overview of EPR applications in a given area.
This series provides an unequalled source of information on an area of chemistry that continues to grow in importance. Divided into sections mainly according to the particular spectroscopic technique used, coverage in each volume includes: NMR (with reference to stereochemistry, dynamic systems, paramagnetic complexes, solid state NMR and Groups 13-18); nuclear quadrupole resonance spectroscopy; vibrational spectroscopy of main group and transition element compounds and coordinated ligands; and electron diffraction. Reflecting the growing volume of published work in the field, researchers will find this an invaluable source of information on current methods and applications. Volume 39 provides a critical review of the literature published up to late 2004.
The state-of-the-art of multivariate analysis in sensory science is described in this volume. Both methods for aggregated and individual sensory profiles are discussed. Processes and results are presented in such a way that they can be understood not only by statisticians but also by experienced sensory panel leaders and users of sensory analysis. The techniques presented are focused on examples and interpretation rather than on the technical aspects, with an emphasis on new and important methods which are possibly not so well known to scientists in the field. Important features of the book are discussions on the relationship among the methods with a strong accent on the connection between problems and methods. All procedures presented are described in relation to sensory data and not as completely general statistical techniques. Sensory scientists, applied statisticians, chemometricians, those working in consumer science, food scientists and agronomers will find this book of value.
The book starts with a detailed description of ICP-MS, including
quadruple-based, sector-based and time-of-flight instruments.
Instrumentation from existing manufacturers is described and
compared to show their similarities and differences. Also, a review
of the ICP-MS literature is carried out to outline both the
strengths and limitations of the technique, whatever its brand, as
well as what it can currently accomplish in terms of applications.
Then, the book demonstrates how these limitations can be reduced
and/or eliminated by combining various techniques with ICP-MS.
Great detail is provided on each technique so that the reader can
get a good understanding of it before carrying on to the
instrumental requirements for its hyphenation to ICP-MS, and the
resulting impact on the operation of the hyphenated instrument.
Since this book is concerned with the ICP side only, which is
fairly similar in all the instruments from the different
manufacturers, the information should be useful to all ICP-MS
users. The features and limitations of each technique are
thoroughly discussed and illustrated with a review of the ICP-MS
literature. Approaches which could be used but have not yet been
tried with ICP-MS are also suggested. This is particularly true of
flow injection techniques which are extremely flexible and have
been used extensively in atomic spectroscopy and spectrophotometry.
Many of the features of the technique have not yet been combined to
ICP-MS, and one purpose of the book will be to point out
potentially beneficial combinations.
Germination of the thought of "Enzymatic- and Transporter-Based Drug-Drug Interactions: Progress and Future Challenges" Proceedings came about as part of the annual meeting of The American Association of Pharmaceutical Scientists (AAPS) that was held in San Diego in November of 2007. The attendance of workshop by more than 250 pharmaceutical scientists reflected the increased interest in the area of drug-drug interactions (DDIs), the greater focus of PhRMA, academia, and regulatory agencies, and the rapid pace of growth in knowledge. One of the aims of the workshop was to address the progress made in quantitatively predicting enzyme- and transporter-based DDIs as well as highlighted areas where such predictions are poor or areas that remain challenging for the future. Because of the serious clinical implications, initiatives have arisen from the FDA (http://www.fda.gov/cber/gdlns/interactstud.htm) to highlight the importance of enzyme- and transporter-based DDIs. During the past ten to fifteen years, we have come to realize that transporters, in addition to enzymes, play a vital role in drug elimination. Such insight has been possible because of the continued growth in PK-ADME (pharmacokinetics-absorption-distribution-metabolism-excretion) knowledge, fueled by further advances in molecular biology, greater availability of human tissues, and the development of additional and sophisticated model systems and sensitive assay methods for studying drug metabolism and transport in vitro and in vivo. This has sparked an in-depth probing into mechanisms surrounding DDIs, resulting from ligand-induced changes in nuclear receptors, as well as alterations in transporter and enzyme expression and function. Despite such advances, the in vitro and in vivo study of drug interactions and the integration of various data sets remain challenging. Therefore, it has become apparent that a proceeding that serves to encapsulate current strategies, approaches, methods and applications is necessary. As Editors, we have assembled a number of opinion leaders and asked them to contribute chapters surrounding these issues. Many of these are the original Workshop speakers whereas others had been selected specially to contribute on topics related to basic and applied information that had not been covered in other reference texts on DDI. The resulting tome, entitled Enzyme- and Transporter-Based Drug Interactions: Progress and Future Challenges, comprises of four sections. Twenty-eight chapters covering various topics and perspectives related to the subject of metabolic and transporter-based drug-drug interactions are presented.
As a spectroscopic method, nuclear magnetic resonance (NMR) has seen spectacular growth, both as a technique and in its applications. Today's applications of NMR span a wide range of scientific disciplines, from physics to biology to medicine. Each volume of Nuclear Magnetic Resonance comprises a combination of annual and biennial reports which together provide comprehensive coverage of the literature on this topic. This Specialist Periodical Report reflects the growing volume of published work involving NMR techniques and applications, in particular NMR of natural macromolecules, which is covered in two reports: NMR of Proteins and Nucleic Acids; and NMR of Carbohydrates, Lipids and Membranes. For those wanting to become rapidly acquainted with specific areas of NMR, Nuclear Magnetic Resonance provides unrivalled scope of coverage. Seasoned practitioners of NMR will find this an invaluable source of current methods and applications. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading experts in their specialist fields, this series is designed to help the chemistry community keep current with the latest developments in their field. Each volume in the series is published either annually or biennially and is a superb reference point for researchers. www.rsc.org/spr
This book gathers 12 outstanding contributions that reflect state-of-the-art industrial applications of fluorescence, ranging from the pharmaceutical and cosmetics industries to explosives detection, aeronautics, instrumentation development, lighting, photovoltaics, water treatment and much more. In the field of fluorescence, the translation of research into important applications has expanded significantly over the past few decades. The 18th volume in the Springer Series on Fluorescence fills an important gap by focusing on selected industrial applications of fluorescence, described in contributions by both industry-based researchers and academics engaged in collaborations with industrial partners.
For the first time, the authors provide a comprehensive and consistent presentation of all techniques available in this field. They rigorously analyze the behavior of different electrochemical single and multipotential step techniques for electrodes of different geometries and sizes under transient and stationary conditions. The effects of these electrode features in studies of various electrochemical systems (solution systems, electroactive monolayers, and liquid-liquid interfaces) are discussed. Explicit analytical expressions for the current-potential responses are given for all available cases. Applications of each technique are outlined for the elucidation of reaction mechanisms. Coverage is comprehensive: normal pulse voltammetry, double differential pulse voltammetry, reverse pulse voltammetry and other triple and multipulse techniques, such as staircase voltammetry, differential staircase voltammetry, differential staircase voltcoulommetry, cyclic voltammetry, square wave voltammetry and square wave voltcoulommetry.
Simple carbohydrates, complex oligosaccharides and polysaccharides all belong to a class of ubiquitous (macro)molecules that exhibit a wide range of biological functions, and the recent advent of enhanced enzymatic, chemical and analytical tools used to study these sugars has inaugurated a genuine explosion in the field of glycomics. Specifically, it has led to a deeper understanding of how specific sugar structures modulate cellular phenotypes, and that breakthrough has led to the discovery of new pharmaceuticals for the treatment of many serious diseases, such as cancer. The subsequent rapid expansion of this research holds high promise for future therapeutic regimens, and capillary electrophoresis (CE) refers to the range of related separation techniques that are integral to this vital research. CE uses narrow-bore fused-silica capillaries to separate a complex array of large and small molecules, and Capillary Electrophoresis of Carbohydrates offers a comprehensive look at the latest breakthroughs and improvements in CE and CE techniques applied to monosaccharides up to complex oligosaccharides and polysaccharides. It begins with an overview of the application of CE and CE- mass spectrometric in the analysis of simple carbohydrates without any previous derivatization step before discussing various detection techniques such as spectrophotometric detection, electrochemical detection and other less common techniques. It then covers in detail an array of related topics and numerous applications. It is an essential text for anyone exploring the myriad possibilities of this rapidly expanding field.
Volume 3 looks at classes of biomolecules including carbohydrates,
nucleic acids, and lipids. In addition, special areas of
application are included, such as pharmaceuticals, natural
products, isotope ratio methods for biomolecules analysis, and
clinical applications. The articles are arranged under general
headings for continuity and ease of access, although several of
these are of interest across the various disciplines. The articles
are intended to teach and therefore strive to cover basics and
sufficient additional detail to bring the reader up-to-date on a
given subject. Some advanced topics are also covered, either in a
special section of articles or in additional reading citations.
Reviews in Fluorescence 2009, the sixth volume of the book serial from Springer, serves as a comprehensive collection of current trends and emerging hot topics in the field of fluorescence and closely related disciplines. It summarizes the year's progress in fluorescence and its applications, with authoritative analytical reviews specialized enough to be attractive to professional researchers, yet also appealing to the wider audience of scientists in related disciplines of fluorescence. Reviews in Fluorescence offers an essential reference material for any lab working in the fluorescence field and related areas. All academics, bench scientists, and industry professionals wishing to take advantage of the latest and greatest in the continuously emerging field of fluorescence will find it an invaluable resource. Reviews in Fluorescence 2009 topics include: Hot electron-Induced Electrogenerated Chemiluminescence. Time-correlated, single-photon counting methods in endothelial cell mechanobiology. Origin of Tryptophan Fluorescence. Protein Folding, Unfolding and Aggregation Processes revealed by Rapid Sampling of Time-Domain Fluorescence.
Reviews in Plasmonics is a comprehensive collection of current trends and emerging hot topics in the field of Plasmonics and closely related disciplines. It summarizes the years progress in Plasmonics and its applications, with authoritative analytical reviews specialized enough to be attractive to professional researchers, yet also appealing to the wider audience of scientists in related disciplines of Plasmonics.
Mass Spectroscopy Imaging (MSI) has emerged as an enabling technique to provide insight into the molecular entities within cells, tissues and whole-body samples and to understand inherent complexities within biological metabolomes. In "Mass ""Spectrometry"" Imaging of Small Molecules"" Methods and Protocols," experts in the MSI field present techniques for 2D and 3D visualization and quantification of a wide array of small molecular species present in biologically relevant samples. Chapters provide detailed operational instructions from sample preparation to method selection, from comparative quantification to structural identification and from data collection to visualization of small molecule mapping in complex samples. Written in the successful "Methods in Molecular Biology" series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible protocols and notes on troubleshooting and avoiding known pitfalls. Authoritative and easily accessible, "Mass ""Spectrometry"" Imaging of Small Molecules"" Methods and Protocols" aims to bring the rapidly maturing methods of metabolic imaging to life science researchers and to minimize technical intimidation in adapting new technological platforms in biological research.
This book is a comprehensive source of the fundamentals, process parameters, instrumental components and applications of laser-induced breakdown spectroscopy (LIBS). The effect of multiple pulses on material ablation, plasma dynamics and plasma emission is presented. A heuristic plasma modeling allows to simulate complex experimental plasma spectra. These methods and findings form the basis for a variety of applications to perform quantitative multi-element analysis with LIBS. These application potentials of LIBS have really boosted in the last years ranging from bulk analysis of metallic alloys and non-conducting materials, via spatially resolved analysis and depth profiling covering measuring objects in all physical states: gaseous, liquid and solid. Dedicated chapters present LIBS investigations for these tasks with special emphasis on the methodical and instrumental concepts as well as the optimization strategies for a quantitative analysis. Requirements, concepts, design and characteristic features of LIBS instruments are described covering laboratory systems, inspections systems for in-line process control, mobile systems and remote systems. State-of-the-art industrial applications of LIBS systems are presented demonstrating the benefits of inline process control for improved process guiding and quality assurance purposes.
This book deals with standard spectroscopic techniques which can be used to analyze semiconductor samples or devices, in both, bulk, micrometer and submicrometer scale. The book aims helping experimental physicists and engineers to choose the right analytical spectroscopic technique in order to get specific information about their specific demands. For this purpose, the techniques including technical details such as apparatus and probed sample region are described. More important, also the expected outcome from experiments is provided. This involves also the link to theory, that is not subject of this book, and the link to current experimental results in the literature which are presented in a review-like style. Many special spectroscopic techniques are introduced and their relationship to the standard techniques is revealed. Thus the book works also as a type of guide or reference book for people researching in optical spectroscopy of semiconductors.
This book covers the latest research work done in the area of interface mechanics of collagen and chitin-based biomaterials along with various techniques that can be used to understand mechanics of biological systems and materials. Topics covered include Raman spectroscopy of biological systems, scale dependence of the mechanical properties and microstructure of crustaceans thin films as biomimetic materials, as well as the role of molecular-level modeling. The use of nanomechanics to investigate interface thermomechanics of collagen and chitin-based biomaterials is also covered in detail. This book also: * Details spectroscope experiments as well as nanomechanic experiments * Reviews exhaustively phenomenological models and Raman spectroscopy of biological systems * Covers the latest in multiscaling for molecular models to predict lab-scale sample properties and investigates interface thermomechanics |
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