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Книга "Elemente Der Weiten Hauptgruppe. Beryllium . Magnesium . Calcium . Strontium . Barium . Radium Und.

Книга "Probleme Der Kernphysik. Isotope ALS Forschungsmittel in Der Chemie Und.

The development and practical implementation of isotope methodologies in water resources assessment and management have been proved to be useful. Isotope techniques can be applied to a wide spectrum of hydrological problems related to both surface and groundwater resources as well as environmental studies in hydro-ecological systems. The main aim of this book is to provide a review of basic theoretical concepts and principles of isotope hydrology methodologies and their practical applications to the researchers, field engineers, managers and academicians involved in research, development, academic work and management in hydrology and water resources. This book contains the lecture notes by eminent Isotope Hydrologists of India. The lectures were delivered in a DST-SERC sponsored training workshop under IWIN programme on Isotope Hydrology during December 19-24, 2011. The Course Coordinator was Dr. Bhishm Kumar, Isotope Hydrologist, IAEA and Co-course Coordinator was Dr. R.D. Deshpande, Scientist, PRL, Ahmedabad. This book can be useful to the teaching faculty of various universities and academic institutions for incorporating the isotopes techniques into their PG course.

A guide for scientists, pediatricians and students involved in metabolic studies in pediatric research Addresses the availability of modern analytical techniques and how to apply these techniques in metabolic studies Covers the whole range of available mass spectrometric techniques used for metabolic studies including Stable Isotope Methodology Presents the relevance of mass spectrometry and stable isotope methodology in pediatric research covering applications in Nutrition, Obesity, Metabolic Disorders, and Kidney Disorders Focuses on the interactions between nutrients and the endogenous metabolism within the body and how these factors affect the health of a growing.

Edited by two very well-known and respected scientists in the field, this excellent practical guide is the first to cover the fundamentals and a wide range of applications, as well as showing readers how to efficiently use this increasingly important technique. From the contents: * The Isotopic Composition of the Elements * Single-Collector ICP-MS * Multi-Collector ICP-MS * Advances in Laser Ablation – Multi-Collector ICP-MS * Correction for Instrumental Mass Discrimination in Isotope Ratio Determination with Multi-Collector ICP-MS * Reference Materials in Isotopic Analysis * Quality Control in Isotope Ratio Applications * Determination of Trace Elements and Elemental Species Using Isotope Dilution ICP-MS * Geochronological Dating * Application of Multi-Collector ICP-MS to Isotopic Analysis in Cosmochemistry * Establishing the Basis for Using Stable Isotope Ratios of Metals as Paleoredox Proxies * Isotopes as Tracers of Elements Across the Geosphere-Biosphere Interface * Archaeometric Applications * Forensics Applications * Nuclear Applications * The Use of Stable Isotope Techniques for Studying Mineral and Trace Element Metabolism in Humans * Isotopic Analysis via Multi-Collector ICP-MS in Elemental Speciation A must-have for newcomers as well as established scientists seeking an overview of isotopic analysis via.

The number-one guide, internationally, to all aspects of forensic isotope analysis, thoroughly updated and revised and featuring many new case studies This edition of the internationally acclaimed guide to forensic stable isotope analysis uses real-world examples to bridge discussions of the basic science, instrumentation and analytical techniques underlying forensic isotope profiling and its various technical applications. Case studies describe an array of applications, many of which were developed by the author himself. They include cases in which isotope profiling was used in murder, and drugs-related crime investigations, as well as for pharmaceutical and food authenticity control studies. Updated with coverage of exciting advances occurring in the field since the publication of the 1st edition, this 2nd edition explores innovative new techniques and applications in forensic isotope profiling, as well as key findings from original research. More than a simple update, though, this edition has been significantly revised in order to address serious problems that can arise from non-comparable and unfit-for-purpose stable isotope data. To that end, Part II has been virtually rewritten with greater emphasis now being placed on important quality control issues in stable isotope analysis in general and forensic stable isotope analysis in particular. Written in a highly accessible style that will appeal to practitioners, researchers and students alike Illustrates the many strengths and potential pitfalls of forensic stable isotope analysis Uses recent case examples to bridge underlying principles with technical applications Presents hands-on applications that let experienced researchers and forensic practitioners match problems with success stories Includes new chapters devoted to aspects of quality control and quality assurance, including scale normalisation, the identical treatment principle, hydrogen exchange and accreditation Stable Isotope Forensics, 2nd Edition is an important professional resource for forensic scientists, law enforcement officials, public prosecutors, defence attorneys, forensic anthropologists and others for whom isotope profiling has become an indispensable tool of the trade. It is also an excellent introduction to the field for senior undergraduate and graduate forensic science students. «All students of forensic criminology, and all law enforcement officers responsible for the investigation of serious crime , will want to study this book. Wolfram highlights the value, and future potential, of Stable Isotope Forensics as an emerging powerful tool in the investigation of crime.» —Roy McComb, Deputy Director, Specialist Investigations, National Crime Agency (NCA), UK “A single author text in these days is rare and the value of this book lies in the dedication and experience of the author which is evident in the clarity of prose, the honest illustration of evidence and the realistic practical application of the subject – it makes this a text of genuine scientific value.” – Prof Dame Sue Black, PhD, DBE, OBE, FRSE, Leverhulme Research Centre for Forensic Science, University of Dundee,.

Monochlorobenzene (MCB) and tetrachloroethylene (PCE) are persistent groundwater contaminants worldwide. In this study, a pilot treatment facility - a horizontal subsurface flow constructed wetland with an open water compartment was established in Bitterfeld, Germany, and it was supplied with contaminated groundwater pumped from local aquifer. The degradation of MCB and PCE was measured and the relevant parameters were analyzed. The concentration of the organic contaminants was determined with GC/FID system, and stable isotope fractionation technique was used for the assessment of in-situ biodegradation of MCB and PCE. The results showed the effective removal of MCB and PCE in planted bed, especially in upper layer, and the isotope fraction analysis suggested that MCB and PCE may have different pathways that dominant the.

This first book to discuss both separation chemistry and mass spectrometry for mineral and rock analysis compares the two frequently used techniques, analyzing both their scope and limitations by way of numerous practical examples. The excellent and highly experienced author adopts a comprehensive and systematic approach, reviewing all the steps involved in an analytical workflow. In addition to thermal ionization mass spectrometry (TIMS), he also discusses applications of ICP-MS. Furthermore, alongside detailed protocols on sample preparation and mass spectrometric measurements, numerous practical hints are given. A must-have handy guide for all isotope geochemists and anyone involved in isotope.

To date, there have been a considerable number of reports and investigations regarding accounts of stable isotopic fractionations and variation of stable isotope ratios. These descriptions depend only on biological activities, a little bit of differences of kinetic ratios of chemical reactions and a little differences of physical development. Although the relationship between the phenomena of stable isotopic fractionations or variation of stable isotope ratios and electric charge or electric field or electromagnetic forces has never been considered. Furthermore the relationship between the phenomena of variation of stable isotope ratios and cosmic-ray bombardment (spallation effect) also has never been considered. The object of this investigation is to discover the reason for variations in isotopic ratios in the environment to adapt the previous studies as follows. [ A ] Neutron bombardment from cosmic radiation (spallation effect) [ B ] Oddo-Harkins Rule [ C ] All kinds of isotopes have specific electrical potential [ D ] Previous study of Production of 7Be by nuclear spallation.

Книга "Elemente Der Achten Hauptgruppe. Edelgase: Helium . Neon . Argon . Krypton . Xenon . Radon Und.

Microstructural Geochronology Geochronology techniques enable the study of geological evolution and environmental change over time. This volume integrates two aspects of geochronology: one based on classical methods of orientation and spatial patterns, and the other on ratios of radioactive isotopes and their decay products. The chapters illustrate how material science techniques are taking this field to the atomic scale, enabling us to image the chemical and structural record of mineral lattice growth and deformation, and sometimes the patterns of radioactive parent and daughter atoms themselves, to generate a microstructural geochronology from some of the most resilient materials in the solar system. First compilation of research focusing on the crystal structure, material properties, and chemical zoning of the geochronology mineral archive down to nanoscale Novel comparisons of mineral time archives from different rocky planets and asteroids and their shock metamorphic histories Fundamentals on how to reconstruct and date radiogenic isotope distributions using atom probe tomography Microstructural Geochronology will be a valuable resource for graduate students, academics, and researchers in the fields of petrology, geochronology, mineralogy, geochemistry, planetary geology, astrobiology, chemistry, and material science. It will also appeal to philosophers and historians of science from other.

Quantum cascade (QC) lasers have application in areas such as medical diagnostics and homeland security. Optical metamaterials have novel interactions with light and potential application for sub-wavelength imaging and optical cloaking. This work first explores new approaches to designing QC lasers. High performance QC lasers are described with a voltage defect of only 19 meV, resulting in record voltage efficiency. Lasers with ultra-strong coupling attain 50% wall-plug efficiency. The thermoelectric effect is measured for the first time within QC lasers, informing further performance enhancements. This work then describes two efforts to improve mid-IR metamaterials. Negative refraction bandwidth and dispersion properties are improved through the use of multiple-metamaterial stacks. QC gain regions are added to these metamaterials to reduce their absorption loss. Finally, QC lasers are developed for trace gas sensing of CO2 isotopes, and a techno-economic model is used to value improved CO2 isotope-based sequestration leakage monitoring. QC laser applications in non-invasive tissue measurements, inter-planetary sensors, C60 spectroscopy, and IR countermeasures are also.

Chemical principles are fundamental to the Earth sciences, and geoscience students increasingly require a firm grasp of basic chemistry to succeed in their studies. The enlarged third edition of this highly regarded textbook introduces the student to such ‘geo-relevant’ chemistry, presented in the same lucid and accessible style as earlier editions, but the new edition has been strengthened in its coverage of environmental geoscience and incorporates a new chapter introducing isotope geochemistry. The book comprises three broad sections. The first (Chapters 1–4) deals with the basic physical chemistry of geological processes. The second (Chapters 5–8) introduces the wave-mechanical view of the atom and explains the various types of chemical bonding that give Earth materials their diverse and distinctive properties. The final chapters (9–11) survey the geologically relevant elements and isotopes, and explain their formation and their abundances in the cosmos and the Earth. The book concludes with an extensive glossary of terms; appendices cover basic maths, explain basic solution chemistry, and list the chemical elements and the symbols, units and constants used in the.

Exploring environmental changes through Earth’s geological history using chemostratigraphy Chemostratigraphy is the study of the chemical characteristics of different rock layers. Decoding this geochemical record across chronostratigraphic boundaries can provide insights into geological history, past climates, and sedimentary processes. Chemostratigraphy Across Major Chronological Boundaries presents state-of-the-art applications of chemostratigraphic methods and demonstrates how chemical signatures can decipher past environmental conditions. Volume highlights include: Presents a global perspective on chronostratigraphic boundaries Describes how different proxies can reveal distinct elemental and isotopic events in the geologic past Examines the Archaean-Paleoproterozoic, Proterozoic-Paleozoic, Paleozoic-Mesozoic, and Mesozoic-Paleogene boundaries Explores cause-and-effect through major, trace, PGE, and REE elemental, stable, and radiogenic isotopes Offers solutions to persistent chemostratigraphic problems on a micro-global scale Geared toward academic and researchgeoscientists, particularly in the fields of sedimentary petrology, stratigraphy, isotope geology, geochemistry, petroleum geology, atmospheric science, oceanography, climate change and environmental science, Chemostratigraphy Across Major Chronological Boundaries offers invaluable insights into environmental evolution and climatic.

Effects of root and shoot genotypes on productivity and physiology of loblolly pine (Pinus taeda L.) seedlings were evaluated in contrasting nutrient regimes. Twelve-week-old seedlings from contrasting provenances were grafted reciprocally to facilitate distinction of rootstock and scion effects. Five families each from mesic and xeric regions were planted in a split-plot design on a nutrient-poor site. Half of the plots were fertilized annually. Total biomass production among families was positively related to proportional biomass allocation to roots. Rootstock did affect stem growth efficiency. Different root genotypes were associated with subtle changes in biomass allocation. Provenances differed in leaf stomatal conductance but not in net photosynthesis. Rootstock affected stomatal conductance, but not WUE of scions. Rootstocks also affected leaf carbon isotope content (C13), in that xeric rootstocks were associated with lower C13. The findings may have utility in genotype selection for environments where soil water limits growth. Results should be informative and useful for tree biology scientists, plant breeders, and plant.