Download or read book 15N NMR Spectroscopy written by G.J. Martin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: After the proton and carbon, nitrogen is, with oxygen, the most impor tant atom in organic and especially bioorganic molecules. However, the development of nitrogen spectroscopy is indeed very recent. This is due to the fact that nitrogen-14, which is the naturally abundant iso tope, suffers, for structural studies, from the disadvantages inherent in nuclei with a quadrupolar moment (Table 1.1). Actually, indirect 15N measurements were reported in the early days of double resonance spectroscopy and the first direct detection of 15N resonance signals at the natural abundance level was realized in 1964 (R 17) at 4.33 MHz 1 (~ 1T) using a 15 mm o.d. cell in the field sweep mode (~ 0.16 min- ). Signal-to-noise ratios only of 3-4 were obtained for neat liquids and this low sensitivity of the 15N resonance still remains the main dis advantage for 15 spectroscopy (Table 1.1). However, nitrogen-15 has, N probably more than any other nucleus, benefited from the advances of NMR technology, i.e. Fourier transformation, multinuclear facilities, wide-bore super conducting solenoids, and, with the new generation of spectrometers, 15N-NMR is entering the field of routine investigation. Nevertheless, in spite of these spectacular improvements, obtaining 15N spectra of diluted species or large biochemical molecules is often not very easy and a good knowledge of the relaxation properties pecu liar to 15N may be necessary in order to adjust the pulse sequences and the decoupler duty cycle correctly (Section 2).

Download or read book Soil Nitrogen Uses and Environmental Impacts written by Rattan Lal and published by CRC Press. This book was released on 2018-03-15 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen (N) is potentially one of the most complex elements on the Earth. It is necessary for all biological activity, but creates negative impacts on water and air quality. There is a balancing act between deficiency and surplus and the forms of N available further complicate our understanding of the dynamics. Biological fixation provides some plants with N supply while others are totally dependent upon N being available in the soil profile for the roots to extract. Nevertheless, the demand for N will increase because the human population with its increasing growth requires more protein and thus more N. Understanding the global N cycle is imperative to meeting current and future nitrogen demands while decreasing environmental impacts. This book discusses availability, production, and recycling of N in air, water, plants, and soils. It features information on N impacts to soil and water quality, management of N in agroecosystems, and techniques to maximize the use efficiency while minimizing the risks of leakage of reactive N into the environment. This volume in the Advances in Soil Science series is specifically devoted to availability, production, and recycling of N with impact on climate change and water quality, and management of N in agroecosystems in the context of maximizing the use efficiency and minimizing the risks of leakage of reactive N (NO-3, N¬2O) into the environment.

Download or read book Research Summaries written by and published by . This book was released on 1994 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Protein Engineering and Design written by Paul R. Carey and published by Elsevier. This book was released on 1996-06-21 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design and production of novel peptides and proteins occupy pivotal positions in science and technology and will continue to do so in the 21st century. Protein Engineering and Design outlines the rapid advances in computer-based modeling, protein engineering, and methods needed for protein and peptide preparation and characterization. This indispensable reference lays the groundwork for understanding this multidisciplinary activity while providing an introduction for researchers and students to the field of protein design. Introduces and defines the techniques involved in protein engineering and design Provides a concise overview of key technologies involved and demonstrates their contributions to the specialized design and production of novel proteins and peptides

Download or read book 15N Tracing of Microbial Assimilation Partitioning and Transport of Fertilisers in Grassland Soils written by Alice Fiona Charteris and published by Springer Nature. This book was released on 2019-10-28 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents innovative research on soil nitrogen cycling and nitrate leaching with a view to improving soil management and fertiliser nitrogen use efficiency and reducing nitrogen leaching losses. In this regard, nitrogen-15 (15N)-labelled fertiliser was used as a biochemical and physical stable isotope tracer in laboratory and field experiments. The major outcome of the research was the development, validation and application of a new compound-specific amino acid 15N stable isotope probing method for assessing the assimilation of fertiliser nitrogen by soil microbial biomass. The novelty of the method lies in its tracing of incorporated nitrogen into newly biosynthesised microbial protein in time-course experiments using gas chromatography-combustion-isotope ratio mass spectrometry. The approach provides previously unattainable insights into the microbial processing of different nitrogen fertilisers in different soils. Further, it identifies the mechanistic link between molecular-scale processes and observations of field-scale fertiliser nitrogen immobilisation studies. The method and the results presented here will have far-reaching implications for the development of enhanced recommendations concerning farm-based soil management practices for increasing soil productivity and reducing nitrogen losses, which is essential to minimising environmental impacts.

Download or read book Solid State NMR written by Jerry C. C. Chan and published by Springer. This book was released on 2011-10-12 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dipolar Recoupling, by Niels Chr. Nielsen, Lasse A. Strassø and Anders B. Nielsen.- Solid-State NMR Techniques for the Structural Determination of Amyloid Fibrils, by Jerry C. C. Chan.- Solid-State 19F-NMR of Peptides in Native Membranes, by Katja Koch, Sergii Afonin, Marco Ieronimo, Marina Berditsch and Anne S. Ulrich.- Probing Quadrupolar Nuclei by Solid-State NMR Spectroscopy: Recent Advances, by Christian Fernandez and Marek Pruski.- Solid State NMR of Porous Materials Zeolites and Related Materials, by Hubert Koller and Mark Weiß.- Solid-State NMR of Inorganic Semiconductors, by James P. Yesinowski.-

Download or read book Encyclopedia of Spectroscopy and Spectrometry written by and published by Academic Press. This book was released on 2016-09-22 with total page 3716 pages. Available in PDF, EPUB and Kindle. Book excerpt: This third edition of the Encyclopedia of Spectroscopy and Spectrometry, Three Volume Set provides authoritative and comprehensive coverage of all aspects of spectroscopy and closely related subjects that use the same fundamental principles, including mass spectrometry, imaging techniques and applications. It includes the history, theoretical background, details of instrumentation and technology, and current applications of the key areas of spectroscopy. The new edition will include over 80 new articles across the field. These will complement those from the previous edition, which have been brought up-to-date to reflect the latest trends in the field. Coverage in the third edition includes: Atomic spectroscopy Electronic spectroscopy Fundamentals in spectroscopy High-Energy spectroscopy Magnetic resonance Mass spectrometry Spatially-resolved spectroscopic analysis Vibrational, rotational and Raman spectroscopies The new edition is aimed at professional scientists seeking to familiarize themselves with particular topics quickly and easily. This major reference work continues to be clear and accessible and focus on the fundamental principles, techniques and applications of spectroscopy and spectrometry. Incorporates more than 150 color figures, 5,000 references, and 300 articles for a thorough examination of the field Highlights new research and promotes innovation in applied areas ranging from food science and forensics to biomedicine and health Presents a one-stop resource for quick access to answers and an in-depth examination of topics in the spectroscopy and spectrometry arenas

Download or read book Journal and Proceedings of the Legislative Council Session written by Nova Scotia. General Assembly. Legislative Council and published by . This book was released on 1927 with total page 1490 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fluorocarbon and Related Chemistry written by R E Banks and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Specialist Periodical Reports provide systematic and detailed review coverage of progress in the major areas of chemical research. Written by experts in their specialist fields the series creates a unique service for the active research chemist, supplying regular critical in-depth accounts of progress in particular areas of chemistry. For over 80 years the Royal Society of Chemistry and its predecessor, the Chemical Society, have been publishing reports charting developments in chemistry, which originally took the form of Annual Reports. However, by 1967 the whole spectrum of chemistry could no longer be contained within one volume and the series Specialist Periodical Reports was born. The Annual Reports themselves still existed but were divided into two, and subsequently three, volumes covering Inorganic, Organic and Physical Chemistry. For more general coverage of the highlights in chemistry they remain a 'must'. Since that time the SPR series has altered according to the fluctuating degree of activity in various fields of chemistry. Some titles have remained unchanged, while others have altered their emphasis along with their titles; some have been combined under a new name whereas others have had to be discontinued. The current list of Specialist Periodical Reports can be seen on the inside flap of this volume.

Download or read book Essential Practical NMR for Organic Chemistry written by S. A. Richards and published by John Wiley & Sons. This book was released on 2022-12-22 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential Practical NMR for Organic Chemistry A hands-on resource advocating an ordered approach to gathering and interpreting NMR data The second edition of Essential Practical NMR for Organic Chemistry delivers a pragmatic and accessible text demonstrating an ordered approach to gathering and interpreting NMR data. In this informal guide, you’ll learn to make sense of the high density of NMR information through the authors’ problem-solving strategies and interpretations. The book also discusses critical aspects of NMR theory, as well as data acquisition and processing strategy. It explains the use of NMR spectroscopy for dealing with problems of small organic molecule structural elucidation and includes a brand-new chapter on Nitrogen-15 NMR. Readers will also find: Strategies for preparing a sample, spectrum acquisition, processing, and interpreting your spectrum Fulsome discussions of Carbon-13 NMR spectroscopy Practical treatments of quantification, safety procedures, and relevant software An ideal handbook for anyone involved in using NMR to solve structural problems, this latest edition of Essential Practical NMR for Organic Chemistry will be particularly useful for chemists running and looking at their own NMR spectra, as well as those who work in small molecule NMR. It will also earn a place in the libraries of undergraduate and post-graduate organic chemistry students.

Download or read book Quantum Information and Quantum Computing written by Mikio Nakahara and published by World Scientific. This book was released on 2012-09-17 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: The open research center project ?Interdisciplinary fundamental research toward realization of a quantum computer? has been supported by the Ministry of Education, Japan for five years. This is a collection of the research outcomes by the members engaged in the project. To make the presentation self-contained, it starts with an overview by Mikio Nakahara, which serves as a concise introduction to quantum information and quantum computing. Subsequent contributions include subjects from physics, chemistry, mathematics, and information science, reflecting upon the wide variety of scientists working under this project. These contributions introduce NMR quantum computing and related techniques, number theory and coding theory, quantum error correction, photosynthesis, non-classical correlations and entanglement, neutral atom quantum computer, among others. Each of contributions will serve as a short introduction to these cutting edge research fields.

Download or read book Nuclear Magnetic Resonance written by G A Webb and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a spectroscopic method, Nuclear Magnetic Resonance (NMR) has seen spectacular growth over the past two decades, both as a technique and in its applications. Today the 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 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 Acids" and "NMR of Carbohydrates, Lipids and Membranes". For those wanting to become rapidly acquainted with specific areas of NMR, this title provides unrivalled scope of coverage. Seasoned practitioners of NMR will find this an in valuable 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 authorities in the relevant subject areas, the series creates a unique service for the active research chemist, with regular, in-depth accounts of progress in particular fields of chemistry. Subject coverage within different volumes of a given title is similar and publication is on an annual or biennial basis.

Download or read book Analytical Instrumentation Handbook written by Jack Cazes and published by CRC Press. This book was released on 2004-11-30 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compiled by the editor of Dekker's distinguished Chromatographic Science series, this reader-friendly reference is as a unique and stand-alone guide for anyone requiring clear instruction on the most frequently utilized analytical instrumentation techniques. More than just a catalog of commercially available instruments, the chapters are wri

Download or read book NMR for Physical and Biological Scientists written by Thomas C. Pochapsky and published by Garland Science. This book was released on 2006-06-30 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear Magnetic Resonance spectroscopy is a dynamic way for scientists of all kinds to investigate the physical, chemical, and biological properties of matter. Its many applications make it a versatile tool previously subject to monolithic treatment in reference-style texts. Based on a course taught for over ten years at Brandeis University, this is the first textbook on NMR spectroscopy for a one-semester course or self-instruction. In keeping with the authors' efforts to make it a useful textbook, they have included problems at the end of each chapter. The book not only covers the latest developments in the field, such as GOESY (Gradient Enhanced Overhauser Spectroscopy) and multidimensional NMR, but includes practical examples using real spectra and associated problem sets. Assuming the reader has a background of chemistry, physics and calculus, this textbook will be ideal for graduate students in chemistry and biochemistry, as well as biology, physics, and biophysics. NMR for Physical and Biological Scientists will also be useful to medical schools, research facilities, and the many chemical, pharmaceutical, and biotech firms that offer in-house instruction on NMR spectroscopy.

Download or read book Z DNA written by Kyeong Kyu Kim and published by Springer Nature. This book was released on 2023-03-09 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: This detailed volume compiles key methods and techniques used to establish some of the structural and functional aspects of Z-form nucleic acids. Beginning with chapters on characterizing Z-DNA, the book continues by exploring structure determination techniques, gene- and genome-targeting methods and genome-wide approaches, Z-RNA study, and much more. Written for the highly successful Methods in Molecular Biology series, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step and readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and practical, Z-DNA: Methods and Protocols serves as an ideal guide for students and researchers curious about this unique Z nucleic acid as an area of investigation, aiming to help the field grow, flourish, and unravel the hidden and novel roles of Z. Chapter 1 is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com. This is an open access book.

Download or read book Paramagnetism in Experimental Biomolecular NMR written by Enrico Ravera and published by Royal Society of Chemistry. This book was released on 2018-08-06 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paramagnetic NMR is a growing technique that represents an increasingly important tool for the investigation of biomolecules. This book presents an update and overview of the paramagnetic NMR phenomena and effects as well as guidelines for practical implementation of state-of-the-art experiments. All experiments are supported by a solid theoretical foundation. Areas mentioned are the development of solid state NMR, the use of paramagnetic tags providing information on the structure and mobility of the investigated systems, and dynamic nuclear polarization to increase sensitivity. Compiled by experts in the field, this book has international appeal for researchers as well as students interested in magnetic resonance and structural biology who require experimental support and accessible information.

Download or read book Environmental Toxicology written by J Rose and published by CRC Press. This book was released on 1998-07-28 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because our chemical environment affects our physical and mental well-being, it is a matter of increasing concern and is therefore attracting much research effort. This timely collection of essays highlights current developments in the field of environmental toxicology. Chapters analyze the carcinogenic, mutagenic, genotoxic, and neurotoxic effects