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Books > Science & Mathematics > Chemistry > Analytical chemistry > Qualitative analytical chemistry

Linearly Polarized IR Spectroscopy - Theory and Applications for Structural Analysis (Paperback): Bojidarka Ivanova, Tsonko... Linearly Polarized IR Spectroscopy - Theory and Applications for Structural Analysis (Paperback)
Bojidarka Ivanova, Tsonko Kolev
R2,271 Discovery Miles 22 710 Ships in 12 - 17 working days

A technique that is useful in the study of pharmaceutical products and biological molecules, polarization IR spectroscopy has undergone continuous development since it first emerged almost 100 years ago. Capturing the state of the science as it exists today, Linearly Polarized IR Spectroscopy: Theory and Applications for Structural Analysis demonstrates how the technique can be properly utilized to obtain important information about the structure and spectral properties of oriented compounds. The book starts with the theoretical basis of linear-dichroic infrared (IR-LD) spectroscopy and then moves on to examine the background of the orientation method of colloid suspensions in a nematic host. It explores the orientation procedure itself, experimental design, and mathematical tools for the interpretation of the IR spectroscopic patterns. Next, the authors describe the structural elucidation of inorganic and organic compounds and glasses. Finally, they discuss applications in pharmaceutical analysis and the chemistry of dyes. Filled with more than 140 illustrations along with a color insert, the book explains both the scope of the polarized IR spectroscopy method as well as its limitations. A powerful source of information not only for specialists in IR spectroscopy, but also for those working in the field of structural analysis, this volume moves the field closer to developing an inherently classical method for the structural characterization of compounds.

Scanning Transmission Electron Microscopy - Imaging and Analysis (Hardcover, 2011 ed.): Stephen J. Pennycook, Peter D Nellist Scanning Transmission Electron Microscopy - Imaging and Analysis (Hardcover, 2011 ed.)
Stephen J. Pennycook, Peter D Nellist
R5,565 Discovery Miles 55 650 Ships in 12 - 17 working days

Scanning transmission electron microscopy has become a mainstream technique for imaging and analysis at atomic resolution and sensitivity, and the authors of this book are widely credited with bringing the field to its present popularity. Scanning Transmission Electron Microscopy(STEM): Imaging and Analysis will provide a comprehensive explanation of the theory and practice of STEM from introductory to advanced levels, covering the instrument, image formation and scattering theory, and definition and measurement of resolution for both imaging and analysis. The authors will present examples of the use of combined imaging and spectroscopy for solving materials problems in a variety of fields, including condensed matter physics, materials science, catalysis, biology, and nanoscience. Therefore this will be a comprehensive reference for those working in applied fields wishing to use the technique, for graduate students learning microscopy for the first time, and for specialists in other fields of microscopy.

Explosives Detection using Magnetic and Nuclear Resonance Techniques (Hardcover, 2009 ed.): Jacques Fraissard, Olga Lapina Explosives Detection using Magnetic and Nuclear Resonance Techniques (Hardcover, 2009 ed.)
Jacques Fraissard, Olga Lapina
R5,737 R4,534 Discovery Miles 45 340 Save R1,203 (21%) Ships in 12 - 17 working days

Nuclear quadrupole resonance (NQR) a highly promising new technique for bulk explosives detection: relatively inexpensive, more compact than NMR, but with considerable selectivity. Since the NQR frequency is insensitive to long-range variations in composition, mixing explosives with other materials, such as the plasticizers in plastic explosives, makes no difference. The NQR signal strength varies linearly with the amount of explosive, and is independent of its distribution within the volume monitored. NQR spots explosive types in configurations missed by the X-ray imaging method.

But if NQR is so good, why it is not used everywhere? Its main limitation is the low signal-to-noise ratio, particularly with the radio-frequency interference that exists in a field environment, NQR polarization being much weaker than that from an external magnetic field. The distinctive signatures are there, but are difficult to extract from the noise. In addition, the high selectivity is partly a disadvantage, as it is hard to build a multichannel system necessary to cover a wide range of target substances. Moreover, substances fully screened by metallic enclosures, etc. are difficult to detect. A workshop was held at St Petersburg in July 2008 in an attempt to solve these problems and make NQR the universal technique for the detection of bombs regardless of type. This book presents the essentials of the papers given there.

Environmentally Friendly Syntheses Using Ionic Liquids (Paperback): Jairton DuPont, Toshiyuki Itoh, Pedro Lozano, Sanjay... Environmentally Friendly Syntheses Using Ionic Liquids (Paperback)
Jairton DuPont, Toshiyuki Itoh, Pedro Lozano, Sanjay Malhotra
R2,177 Discovery Miles 21 770 Ships in 12 - 17 working days

Increased environmental consciousness within the scientific community has spurred the search for environmentally friendly processes as alternatives to conventional organic solvents. In the past two decades, numerous advances-including the use of ionic liquids-have made it possible to develop substitutes for some toxic solvents. Ionic liquids are widely recognized as suitable for use in organic reactions and can also improve the control of product distribution, enhanced reactivity, ease of product recovery, catalyst immobilization, and recycling. Environmentally Friendly Syntheses Using Ionic Liquids presents the latest developments in the field. It also reviews the latest applications in a wide range of fields including biotechnology, nuclear science, medicine, pharmaceuticals, environmental science, and organic and inorganic chemistry-all from the standpoint of green sustainable chemistry. Growing interest in the field of ionic liquids will define newer and unexplored areas of applications, expanding possible use of these environmentally friendly chemicals. The information presented in this book will undoubtedly help motivate readers to further explore the field.

Preparative Chromatography 3e (Hardcover, 3rd Edition): H Schmidt-Traub Preparative Chromatography 3e (Hardcover, 3rd Edition)
H Schmidt-Traub
R4,615 R3,918 Discovery Miles 39 180 Save R697 (15%) Ships in 9 - 15 working days

The third edition of this popular work is revised to include the latest developments in this fast-changing field. Its interdisciplinary approach elegantly combines the chemistry and engineering to explore the fundamentals and optimization processes involved.

CRC Handbook of Chromatography - Volume I: Plant Pigments (Paperback): Hans-Peter Kost CRC Handbook of Chromatography - Volume I: Plant Pigments (Paperback)
Hans-Peter Kost; Series edited by Joseph Sherma
R1,831 Discovery Miles 18 310 Ships in 12 - 17 working days

The CRC Handbook of Chromatography is a series of work-bench references for scientists and researchers using chromatographic systems for the analysis of organic and inorganic compounds. This handbook is an assemblage of tables where, besides data obtained by modern separation methods, older sources often difficult to access have been included to give maximum information. For use in scientific research and routine analysis where the exact determination of plant pigments, because of their light absorbing properties and defined tasks, is necessary.

Handbook of Chromatography Volume II (1990) - Carbohydrates (Paperback): Shirley C. Churms Handbook of Chromatography Volume II (1990) - Carbohydrates (Paperback)
Shirley C. Churms; Series edited by Joseph Sherma
R1,853 Discovery Miles 18 530 Ships in 12 - 17 working days

CRC Handbook of Chromatography: Carbohydrates, Volume II updates the first volume, continuing coverage of literature published from 1979 to 1989. Tabulated for easy reference and thoroughly documented, it presents the comprehensive data for all chromatographic techniques applicable to carbohydrates. It features glycoproteins, proteoglycans, and glycolipids, as well as mono-, oligo-, and polysaccharides. This important text emphasizes novel chromatographic methods. Highlights of this superb work include the diversity of HPLC methods applicable to carbohydrates, and the use of some new techniques, including supercritical fluid chromatography and ion chromatography in carbohydrate analysis. Readers discover the latest detection methods, degradative processes, and derivatization techniques. Detailed chapters cover topics such as spectroscopic techniques, electrochemistry, and gas chromatography. This easy-to-use volume provides an excellent working manual and reference book for researchers in the fields of carbohydrate chemistry and biochemistry. CRC Handbook of Chromatography, Carbohydrates: Volume II is an absolute must for all analysts working for industries concerned with carbohydrates.

VCD Spectroscopy for Organic Chemists (Hardcover): Philip J. Stephens, Frank J. Devlin, James R. Cheeseman VCD Spectroscopy for Organic Chemists (Hardcover)
Philip J. Stephens, Frank J. Devlin, James R. Cheeseman
R6,257 Discovery Miles 62 570 Ships in 10 - 15 working days

Stimulated by the increasing importance of chiral molecules as pharmaceuticals and the need for enantiomerically pure drugs, techniques in chiral chemistry have been expanded and refined, especially in the areas of chromatography, asymmetric synthesis, and spectroscopic methods for chiral molecule structural characterization. In addition to synthetic chiral molecules, naturally occurring molecules, which are invariably chiral and generally enantiomerically enriched, are of potential interest as leads for new drugs.

VCD Spectroscopy for Organic Chemists discusses the applications of vibrational circular dichroism (VCD) spectroscopy to the structural characterization of chiral organic molecules. The book provides all of the information about VCD spectroscopy that an organic chemist needs in order to make use of the technique. The authors, experts responsible for much of the existing literature in this field, discuss the experimental measurement of VCD and the theoretical prediction of VCD. In addition, they evaluate the advantages and limitations of the technique in determining molecular structure.

Given the availability of commercial VCD instrumentation and quantum chemistry software, it became possible in the late 1990s for chemists to use VCD in elucidating the stereochemistries of chiral organic molecules. This book helps organic chemists become more aware of the utility of VCD spectroscopy and provides them with sufficient knowledge to incorporate the technique into their own research.

Handbook of Chromatography Vol I (1982) - Carbohydrates (Paperback): Shirley C. Churms Handbook of Chromatography Vol I (1982) - Carbohydrates (Paperback)
Shirley C. Churms
R1,572 Discovery Miles 15 720 Ships in 12 - 17 working days

This handbook is intended to serve as a working manual and reference book for carbohydrate chemists and biochemists using the chromatographic methods that are indispensable in this field. Emphsis is on newer methods, such as high-performance liquid chromatography (HPLC) and other automated liquid chromatography systems; and the material included was compiled mainly from literature published during the years 1970 to 1978. Data appearing in Volumes I and II of the Handbook of Chromatography are not repeated here, but references to relevant tables in Volumes I and II are given at the start of corresponding sections of this handbook. In some cases material published before 1970 that was omitted from Volumes I and II of the series is included here: this applies particularly to the sections dealing with paper chromatography and electrophoresis.

Ultrafast Magnetism I - Proceedings of the International Conference UMC 2013 Strasbourg, France, October 28th - November 1st,... Ultrafast Magnetism I - Proceedings of the International Conference UMC 2013 Strasbourg, France, October 28th - November 1st, 2013 (Hardcover, 2015 ed.)
Jean-Yves Bigot, Wolfgang Hubner, Theo Rasing, Roy Chantrell
R5,298 R4,940 Discovery Miles 49 400 Save R358 (7%) Ships in 12 - 17 working days

This volume on Ultrafast Magnetism is a collection of articles presented at the international "Ultrafast Magnetization Conference" held at the Congress Center in Strasbourg, France, from October 28th to November 1st, 2013. This first conference, which is intended to be held every two years, received a wonderful attendance and gathered scientists from 27 countries in the field of Femtomagnetism, encompassing many theoretical and experimental research subjects related to the spins dynamics in bulk or nanostructured materials. The participants appreciated this unique opportunity for discussing new ideas and debating on various physical interpretations of the reported phenomena. The format of a single session with many oral contributions as well as extensive time for poster presentations allowed researchers to have a detailed overview of the field. Importantly, one could sense that, in addition to studying fundamental magnetic phenomena, ultrafast magnetism has entered in a phase where applied physics and engineering are playing an important role. Several devices are being proposed with exciting R&D perspectives in the near future, in particular for magnetic recording, time resolved magnetic imaging and spin polarized transport, therefore establishing connections between various aspects of modern magnetism. Simultaneously, the diversity of techniques and experimental configurations has flourished during the past years, employing in particular Xrays, visible, infra-red and terahertz radiations. It was also obvious that an important effort is being made for tracking the dynamics of spins and magnetic domains at the nanometer scale, opening the pathway to exciting future developments. The concerted efforts between theoretical and experimental approaches for explaining the dynamical behaviors of angular momentum and energy levels, on different classes of magnetic materials, are worth pointing out. Finally it was unanimously recognized that the quality of the scientific oral and poster presentations contributed to bring the conference to a very high international standard.

Spectroscopic Data of Steroid Glycosides - Volume 6 (Hardcover, 2007 ed.): Viqar Uddin Ahmad, Anwer Basha Spectroscopic Data of Steroid Glycosides - Volume 6 (Hardcover, 2007 ed.)
Viqar Uddin Ahmad, Anwer Basha
R10,901 R8,661 Discovery Miles 86 610 Save R2,240 (21%) Ships in 12 - 17 working days

This book is an essential reference guide to spectroscopic, physical and biological activity data of over 3500 steroid glycosides, offering the structures and the data of the naturally occurring glycosides of steroids. All compounds are arranged according to the structure of the aglycone, and, in its own class, by the increasing molecular weight, making Spectroscopic Data of Steroid Glycosides extremely useful for the structure elucidation of new natural products, particularly glycosides.

Spectroscopic Data of Steroid Glycosides - Volume 5 (Hardcover, 2007 ed.): Viqar Uddin Ahmad, Anwer Basha Spectroscopic Data of Steroid Glycosides - Volume 5 (Hardcover, 2007 ed.)
Viqar Uddin Ahmad, Anwer Basha
R10,901 R8,661 Discovery Miles 86 610 Save R2,240 (21%) Ships in 12 - 17 working days

This book is an essential reference guide to spectroscopic, physical and biological activity data of over 3500 steroid glycosides, offering the structures and the data of the naturally occurring glycosides of steroids. All compounds are arranged according to the structure of the aglycone, and, in its own class, by the increasing molecular weight, making Spectroscopic Data of Steroid Glycosides extremely useful for the structure elucidation of new natural products, particularly glycosides.

Polymer Surfaces & Interfaces II (Hardcover): W.J. Feast Polymer Surfaces & Interfaces II (Hardcover)
W.J. Feast
R13,021 Discovery Miles 130 210 Ships in 12 - 17 working days

Polymer Surfaces and Interfaces II W. J. Feast, University of Durham, Durham, UK H. S. Munro, Courtaulds Research, Coventry, UK R. W. Richards, University of Durham, Durham, UK This volume presents a collection of review papers, based on the a Polymer Surfaces and Interfaces II International Symposiuma which took place in Durham (UK), July 1991 Compiled here, the papers present an authoritative overview of current technology and research on polymer surfaces, by acknowledged experts in their specialist fields. Individual reviews cover analytical techniques, properties, reactions, modelling and synthesis of surfaces and interfaces. Polymer Surfaces and Interfaces II will be of interest to polymer scientists, surface scientists, chemists, physicists and biologists, working in industrial and academic laboratories. Reviews of the previous volume a Altogether a most useful addition to polymer sciencea ---- Physics Bulletin a The book can be unreservedly recommended to chemists and materials scientists with an interest in adhesion, biomaterials, polymer dispersions and molecular engineeringa ---- Polymer Contents Surface Chemistry of Chemically Resistant Polymers; T. G. Bee, A. J. Dias, N. L. Franchina, B. U. Kolb, K.--W. Lee, P. A. Patton, M. S. Shoichet and T. J. McCarthy Self--assembled Molecular Films as Polymer Surface Models; D. L. Allara, S. V. Atre and A. N. Parikh Non--equilibrium Effects in Polymeric Stabilization; M. E. Cates and J. T. Brooks Ion Beam Analysis of Composition Profiles near Polymer Surfaces and Interfaces; R. A. L. Jones Laser Light Scattering; J. C. Earnshaw Characterization of Interfaces in Polymers and Composites using Raman Spectroscopy; R. J. Young Surface Modification and Analysis of Ultra--high--modulus Polyethylene Fibres for Composites; G. A. George SSIMS ---- An Emeriging Technique for the Surface Chemical Analysis of Polymeric Biomaterials; M. C. Davies Scanning Probe Microscopy ---- Current Issues in the Analysis of Polymeric Biomaterials; M. C. Davies, D. E. Jackson, C. J Roberts, S. J. B. Tendler, K. M. Kreusel, M. J. Wilkins and P. M. Williams Surface Grafting of a Thrombin Substrate on a Polymer Membrane and the Inhibition of Thrombin Activity Leading to Non--thrombogenicity; Y. Ito, L.--S. Liu and Y. Imanishi Acid----Base Effects at Polymer Interfaces; C. J. van Oss

Fundamentals of Spin Exchange - Story of a Paradigm Shift (Hardcover, 1st ed. 2019): Kev M. Salikhov Fundamentals of Spin Exchange - Story of a Paradigm Shift (Hardcover, 1st ed. 2019)
Kev M. Salikhov
R2,954 Discovery Miles 29 540 Ships in 10 - 15 working days

This book is a comprehensive summary of 50 years of research from theoretical predictions to experimental confirmation of the manifestation of spin exchange in EPR spectroscopy. The author unfolds the details of comprehensive state of the art of theoretical calculations, which have been proven to become the core of the paradigm shift in spin exchange and set the direction for the future of spin exchange research. The book refers to important experimental data that confirms the theory. It describes the modern protocol for determining the bi-molecular spin exchange rate from the EPR spectra, which will be especially interesting for experimentalists. Given its scope, the book will benefit all researchers engaged in theory and experiments in the area of spin exchange and its manifestations in EPR spectroscopy, where many remarkable applications of the spin probe have been developed.

Dynamic Force Spectroscopy and Biomolecular Recognition (Paperback): Anna Rita Bizzarri, Salvatore Cannistraro Dynamic Force Spectroscopy and Biomolecular Recognition (Paperback)
Anna Rita Bizzarri, Salvatore Cannistraro
R1,896 Discovery Miles 18 960 Ships in 12 - 17 working days

Molecular recognition, also known as biorecognition, is the heart of all biological interactions. Originating from protein stretching experiments, dynamic force spectroscopy (DFS) allows for the extraction of detailed information on the unbinding process of biomolecular complexes. It is becoming progressively more important in biochemical studies and is finding wider applications in areas such as biophysics and polymer science. In six chapters, Dynamic Force Spectroscopy and Biomolecular Recognition covers the most recent ideas and advances in the field of DFS applied to biorecognition: Chapter 1: Reviews the basic and novel aspects of biorecognition and discusses the emerging capabilities of single-molecule techniques to disclose kinetic properties and molecular mechanisms usually hidden in bulk measurements Chapter 2: Describes the basic principle of atomic force microsocopy (AFM) and DFS, with particular attention to instrumental and theoretical aspects more strictly related to the study of biomolecules Chapter 3: Overviews the theoretical background in which experimental data taken in nonequilibrum measurements of biomolecular unbinding forces are extrapolated to equilibrium conditions Chapter 4: Reviews the most common and efficient strategies adopted in DFS experiments to immobilize the interacting biomolecules to the AFM tip and to the substrate Chapter 5: Presents and discusses the most representative aspects related to the analysis of DFS data and the challenges of integrating well-defined criteria to calibrate data in automatic routinary procedures Chapter 6: Overviews the most relevant DFS applications to study biorecognition processes, including the biotin/avidin pair, and selected results on various biological complexes, including antigen/antibody, proteins/DNA, and complexes involved in adhesion processes Chapter 7: Summarizes the main results obtained by DFS applied to study biorecognition processes with forthcoming theoretical and experimental advances Although DFS is a widespread, worldwide technique, no books focused on this subject have been available until now. Dynamic Force Spectroscopy and Biomolecular Recognition provides the state of the art of experimental data analysis and theoretical procedures, making it a useful tool for researchers applying DFS to study biorecognition processes.

Spectroscopic Data of Steroid Glycosides - Volume 4 (Hardcover, 2007 ed.): Viqar Uddin Ahmad, Anwer Basha Spectroscopic Data of Steroid Glycosides - Volume 4 (Hardcover, 2007 ed.)
Viqar Uddin Ahmad, Anwer Basha
R11,465 R8,661 Discovery Miles 86 610 Save R2,804 (24%) Ships in 12 - 17 working days

This book is an essential reference guide to spectroscopic, physical and biological activity data of over 3500 steroid glycosides, offering the structures and the data of the naturally occurring glycosides of steroids. All compounds are arranged according to the structure of the aglycone, and, in its own class, by the increasing molecular weight, making Spectroscopic Data of Steroid Glycosides extremely useful for the structure elucidation of new natural products, particularly glycosides.

Advances in Chromatography, Volume 51 (Hardcover, New): Eli Grushka, Nelu Grinberg Advances in Chromatography, Volume 51 (Hardcover, New)
Eli Grushka, Nelu Grinberg
R9,018 Discovery Miles 90 180 Ships in 10 - 15 working days

For more than four decades, scientists and researchers have relied on the Advances in Chromatography series for the most up-to-date information on a wide range of developments in chromatographic methods and applications. For Volume 51, the series editors have invited established, well-known chemists from across the globe to offer cutting-edge reviews on their areas of expertise-from theoretical aspects to novel and established applications of chromatographic techniques. Featured topics include Nonequilibrium Thermodynamics in Nonlinear Chromatography and Electrophoresis: Theory and Applications Biomimetic Chromatography: A Useful Tool in the Drug Discovery Process Solid-Phase Microextraction for In Vivo Pharmacokinetics and Other Stages of Drug Development Identification and Detection of Antibiotic Drugs and Their Degradation Products in Aquatic Samples Sample Preparation for Chromatographic Analysis Development of HPLC Retention Index QSAR Models for Nontargeted Metabolomics Thin Layer Chromatography with a Controlled Gas Phase Influencing on the Separation The clear presentation of topics and vivid illustrations for which this series has become known makes the material accessible and engaging to analytical, biochemical, organic, polymer, and pharmaceutical chemists at all levels of technical skill.

Vibrational Spectroscopy at Electrified Interfaces (Hardcover): A. Wieckowski Vibrational Spectroscopy at Electrified Interfaces (Hardcover)
A. Wieckowski
R4,206 Discovery Miles 42 060 Ships in 12 - 17 working days

Edited by highly cited researchers, Vibrational Spectroscopy of Electrified Interfaces highlights modern vibrational techniques ranging from Raman, infrared and non-linear optical spectroscopy to inelastic electron scattering and their application to study electrified interfaces. Providing molecular-level information on the structure and composition of surfaces and interfaces, this first book available on the topic addresses theory, techniques, and applications across a wide range of interfaces in the physical and biological sciences, including those in biological, geochemical, and power devices such as batteries, solar and fuel cells.

HPLC Methods for Recently Approved Pharmaceuticals (Hardcover, Annotated Ed): G. Lunn HPLC Methods for Recently Approved Pharmaceuticals (Hardcover, Annotated Ed)
G. Lunn
R6,499 Discovery Miles 64 990 Ships in 12 - 17 working days

An indispensable resource for busy researchers
Your time is valuable-too valuable to spend hunting through the technical literature in search of the right HPLC assay techniques for your projects. With HPLC Methods for Recently Approved Pharmaceuticals, you'll quickly identify and replicate the ideal procedures for your project needs, without having to refer to original source publications. More of your time can then be spent in the lab, not the library.
Covering the relevant world literature through 2003, this book picks up where Dr. Lunn's acclaimed HPLC Methods for Pharmaceutical Analysis left off. It arms you with established HPLC assay techniques for hundreds of newly approved drugs, as well as drugs for which assay methods were only recently developed. Combining detailed descriptions of procedures with specially annotated references, this practical handbook gives you:
* HPLC methods for 390 commonly prescribed pharmaceutical compounds
* Various procedures for each drug listed together-making it easy to mix and match for customized approaches
* Methods for drugs in biological fluids and for bulk and formulated drugs
* Chemical structures, molecular weights and formulas, and CAS Registry Numbers
* Cross-references to The Merck Index
* Retention times of other drugs that can be assayed using the same methods

Instructor's Guide and Solutions Manual to Organic  Structures from 2D NMR Spectra (Paperback): L.D. Field Instructor's Guide and Solutions Manual to Organic Structures from 2D NMR Spectra (Paperback)
L.D. Field
R849 Discovery Miles 8 490 Ships in 12 - 17 working days

The text Organic Structures from 2D NMR Spectra contains a graded set of structural problems employing 2D-NMR spectroscopy. The Instructors Guide and Solutions Manual to Organic Structures from 2D NMR Spectra is a set of step-by-step worked solutions to every problem in Organic Structures from 2D NMR Spectra. While it is absolutely clear that there are many ways to get to the correct solution of any of the problems, the instructors guide contains at least one complete pathway to every one of the questions. In addition, the instructors guide carefully rationalises every peak in every spectrum in relation to the correct structure. The Instructors Guide and Solutions Manual to Organic Structures from 2D NMR Spectra: Is a complete set of worked solutions to the problems contained in Organic Structures from 2D NMR Spectra. Provides a step-by-step description of the process to derive structures from spectra as well as annotated 2D spectra indicating the origin of every cross peak. Highlights common artefacts and re-enforces the important characteristics of the most common techniques 2D NMR techniques including COSY, NOESY, HMBC, TOCSY, CH-Correlation and multiplicity-edited C-H Correlation. This guide is an essential aid to those teachers, lecturers and instructors who use Organic Structures from 2D NMR as a text to teach students of Chemistry, Pharmacy, Biochemistry and those taking courses in Organic Chemistry.

Ground States of the Two-Dimensional Electron System at Half-Filling under Hydrostatic Pressure (Hardcover, 1st ed. 2019):... Ground States of the Two-Dimensional Electron System at Half-Filling under Hydrostatic Pressure (Hardcover, 1st ed. 2019)
Katherine A. Schreiber
R2,927 Discovery Miles 29 270 Ships in 10 - 15 working days

This thesis presents the discovery of a surprising phase transition between a topological and a broken symmetry phase. Phase transitions between broken symmetry phases involve a change in symmetry and those between topological phases require a change in topological order; in rare cases, however, transitions may occur between these two broad classes of phases in which the vanishing of the topological order is accompanied by the emergence of a broken symmetry. This thesis describes observations of such a special phase transition in the two-dimensional electron gas confined in the GaAs/AlGaAs structures. When tuned by hydrostatic pressure, the = 5/2 and = 7/2 fractional quantum Hall states, believed to be prototypical non-Abelian topological phases of the Pfaffian universality class, give way to an electronic nematic phase. Remarkably, the fractional quantum Hall states involved are due to pairing of emergent particles called composite fermions. The findings reported here, therefore, provide an interesting example of competition of pairing and nematicity. This thesis provides an introduction to quantum Hall physics of the two-dimensional electron gas, contains details of the high pressure experiments, and offers a discussion of the ramifications and of the origins of the newly reported phase transition.

Spectroscopic Data of Steroid Glycosides: Spirostanes, Bufanolides, Cardenolides - Volume 3 (Hardcover, 2007 ed.): Viqar Uddin... Spectroscopic Data of Steroid Glycosides: Spirostanes, Bufanolides, Cardenolides - Volume 3 (Hardcover, 2007 ed.)
Viqar Uddin Ahmad, Anwer Basha
R9,490 R8,659 Discovery Miles 86 590 Save R831 (9%) Ships in 12 - 17 working days

Spectroscopic Data of Steroid Glycosides serves as an essential reference guide containing spectroscopic, physical and biological activity data of over 3500 steroid glycosides, offering the structures and the data of the naturally occurring glycosides of steroids. All compounds are arranged according to the structure of the aglycone, and, in its own class, according to the increasing molecular weight, making Spectroscopic Data of Steroid Glycosides extremely useful for the structure elucidation of new natural products, particularly glycosides.

Spectroscopic Data of Steroid Glycosides - Volume 2 (Hardcover, 2007 ed.): Anwer Basha, Viqar Uddin Ahmad Spectroscopic Data of Steroid Glycosides - Volume 2 (Hardcover, 2007 ed.)
Anwer Basha, Viqar Uddin Ahmad
R10,904 R8,664 Discovery Miles 86 640 Save R2,240 (21%) Ships in 12 - 17 working days

Spectroscopic Data of Steroid Glycosides serves as an essential reference guide containing spectroscopic, physical and biological activity data of over 3500 steroid glycosides, offering the structures and the data of the naturally occurring glycosides of steroids. All compounds are arranged according to the structure of the aglycone, and, in its own class, according to the increasing molecular weight, making Spectroscopic Data of Steroid Glycosides extremely useful for the structure elucidation of new natural products, particularly glycosides.

Spectroscopic Data of Steroid Glycosides offers a practical desk reference for all scientists and students interested in steroid glycosides and their biological and medicinal importance.

The following data of the steroid glycosides, as available in published literature, are included: - Name of the compound, Chemical name of compound and its structure, - Source, name of the genus, species, authors, family of the biological source from which the glycoside has been isolated, - Melting point, - Specific rotation, - Molecule weight, - Molecular formula, - UV spectral data: maxima, e or log e, solvent, - IR peaks in cm-1 with medium in which the spectrum was taken e.g. KBr, nujol, etc, - Proton magnetic resonance (PMR) chemical shifts, multiplicity of the peaks, coupling constants with assignments, - 13C-NMR (CMR) chemical shifts with assignments, - Mass spectral data with the technique used (e.g. Electron Impact (E.I.), Fast Atom Bombardment (FAB), positive ion or negative ion mode or any other technique, - CD or ORD data, - Biological Activity, - Full reference from which data have been taken.

Spectroscopic Data of Steroid Glycosides - Volume 1 (Hardcover, 2007 ed.): Anwer Basha, Viqar Uddin Ahmad Spectroscopic Data of Steroid Glycosides - Volume 1 (Hardcover, 2007 ed.)
Anwer Basha, Viqar Uddin Ahmad
R10,901 R8,661 Discovery Miles 86 610 Save R2,240 (21%) Ships in 12 - 17 working days

This book is an essential reference guide to spectroscopic, physical and biological activity data of over 3500 steroid glycosides, offering the structures and the data of the naturally occurring glycosides of steroids. All compounds are arranged according to the structure of the aglycone, and, in its own class, by the increasing molecular weight, making Spectroscopic Data of Steroid Glycosides extremely useful for the structure elucidation of new natural products, particularly glycosides.

Analytical Methods for Food Safety by Mass Spectrometry - Volume II Veterinary Drugs (Paperback): Guo-Fang Pang Analytical Methods for Food Safety by Mass Spectrometry - Volume II Veterinary Drugs (Paperback)
Guo-Fang Pang
R3,604 R3,347 Discovery Miles 33 470 Save R257 (7%) Ships in 12 - 17 working days

Analytical Methods for Food Safety by Mass Spectrometry, Volume Two: Veterinary Drugs systematically introduces the Pesticide and Veterinary Drug Multiresidues Analytical Methods, with discussions on 69 veterinary drug multiresidues chromatic-MS analytical methods that are capable of detecting over 200 veterinary drugs and chemical residues of 20 categories, such as ss-agonists, ss-lactams, aminoglycosides, amphenicols, anabolic hormone, anabolic steroids, avermectins, benzimidazole, cephalosporins, glucocorticoid steroids, macrolides, nitrofurans, nitroimidazoles, NSAIDs, polyether, polypeptides, progestagens, pyrazolones, quinolones, quinoxalines, sedatives, sulfonamides, synthetic estrogens, tetracyclines, thyreostats, and other toxins in animal and poultry tissues, acquatic products, milk, milk powders and bee products. This valuable book can be used as reference for not only university students, but also technical personnel of different specialties who are engaged with study and applications, such as food safety, agricultural environment protection, pesticide development, and utilization in scientific research units, institutions and quality inspection organizations.

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