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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.

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

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.

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.

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.

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.

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.

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,.

Tempeh is a traditional fermented soybean product, which is normally produced by the cottage industry in Malaysia and normally consumed as fried, boiled, steamed or roasted. In Malaysian diet, tempeh is categorized as one of the calcium-containing food source in addition to milk and dairy products. The postmenopausal Malay women in Malaysia were reported to consume only 30–60% from the recommended 1,000 mg calcium/day. Thus, in order to assess the bioavailability of tempeh as a calcium source, fractional calcium absorption from tempeh was determined in 20 healthy postmenopausal Malay women. It was compared to that observed from milk using dual stable isotopes (42Ca and 44Ca) approach in a randomized cross over design. The same load of calcium (130 mg) from either milk or tempeh was given to the subjects, with a one-month of wash out period between each test meal. All urine was collected from subjects after the 24-h of post-dosing and ratio of the isotopes in urine was determined using the magnetic sector Thermal Ionization Mass Spectrometer. Average fractional calcium absorption from tempeh did not differ significantly from.

Molecular processes in nature affect human health, the availability of resources and the Earth’s climate. Molecular modelling is a powerful and versatile toolbox that complements experimental data and provides insights where direct observation is not currently possible. Molecular Modeling of Geochemical Reactions: An Introduction applies computational chemistry to geochemical problems. Chapters focus on geochemical applications in aqueous, petroleum, organic, environmental, bio- and isotope geochemistry, covering the fundamental theory, practical guidance on applying techniques, and extensive literature reviews in numerous geochemical sub-disciplines. Topics covered include: • Theory and Methods of Computational Chemistry • Force Field Application and Development • Computational Spectroscopy • Thermodynamics • Structure Determination • Geochemical Kinetics This book will be of interest to graduate students and researchers looking to understand geochemical processes on a molecular level. Novice practitioners of molecular modelling, experienced computational chemists, and experimentalists seeking to understand this field will all find information and knowledge of use in their.

The context for understanding global climate change today lies in the records of Earth’s past. This is demonstrated by decades of paleoclimate research by scientists in organizations such as the Integrated Ocean Drilling Program (IODP), the Antarctic Geological Drilling Program (ANDRILL), and many others. The purpose of this full colour textbook is to put key data and published case studies of past climate change at your fingertips, so that you can experience the nature of paleoclimate reconstruction. Using foundational geologic concepts, students explore a wide variety of topics, including: marine sediments, age determination, stable isotope paleoclimate proxies, Cenozoic climate change, climate cycles, polar climates, and abrupt warming and cooling events, students are invited to evaluate published scientific data, practice developing and testing hypotheses, and infer the broader implications of scientific results. It is our philosophy that addressing how we know is as important as addressing what we know about past climate change. Making climate change science accessible is the goal of this book. This book is intended for earth science students at a variety of levels studying paleoclimatology, oceanography, Quaternary science, or earth-system science. Additional resources for this book can be found at:.

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.

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.