Download or read book Stable Calcium Isotopes as tracers in studies of mineral metabolism written by Duncan Mac Pherson and published by . This book was released on 1965 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stable Calcium Isotopes as Tracers in Studies of Mineral Metabolism written by G. Duncan McPherson and published by . This book was released on 1965 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calcium Isotopes written by Elizabeth M. Griffith and published by Cambridge University Press. This book was released on 2021-01-21 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precise measurements of the calcium (Ca) isotopes have provided constraints on Ca cycling at global and local scales, and quantified rates of carbonate diagenesis in marine sedimentary systems. Key to applying Ca isotopes as a geochemical tracer of Ca cycling, carbonate (bio)mineralization, and diagenesis is an understanding of the impact of multiple factors potentially impacting Ca isotopes in the rock record. These factors include variations in stable isotopic fractionation factors, the influence of local-scale Ca cycling on Ca isotopic gradients in carbonate settings, carbonate dissolution and reprecipitation, and the relationship between the Ca isotopic composition of seawater and mineral phases that record the secular evolution of seawater chemistry.
Download or read book The Application of Thermal Ionisation Mass Spectrometry and Two Enriched Stable Isotope Tracers in Studies of Calcium Metabolism in Human Lactation written by Arthur Bogoias and published by . This book was released on 2002 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calcium is an important mineral for several physiological functions in humans and its absorption and transfer kinetics within the body are the subject of ongoing research. In this study two stable calcium isotope tracers were administered to lactating human subjects in trace quantities. The quantities of tracer excreted in urine samples (taken daily) were calculated from isotopic ratios measured in urine calcium extracts using thermal ionisation mass spectrometry. From the measured data it was possible to obtain precise determinations of fractional intestinal absorption, tracer depletion or washout profiles as tracer was excreted over time. A three-phase model of tracer washout was evident which strongly supported a three-exponential model for calcium transfer after initial intestinal absorption. In the second part of this study, ingestion of dietary calcium supplements lifted total calcium intake well above the recommended daily intake. The effect on fractional intestinal absorption of excess calcium intake by women in lactation was then determined. The economics of research in this area is dependent upon the high cost of stable isotope tracers and the mass spectrometric technique. Experimental procedures had to be developed to enable very small tracer doses to be used and high precision in measurement of isotopic ratios to be achieved. This study outlines the procedures developed and the precision that could be routinely achieved.
Download or read book Calcium Stable Isotope Geochemistry written by Nikolaus Gussone and published by Springer. This book was released on 2016-05-02 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of the fundamentals and reference values for Ca stable isotope research, as well as current analytical methodologies including detailed instructions for sample preparation and isotope analysis. As such, it introduces readers to the different fields of application, including low-temperature mineral precipitation and biomineralisation, Earth surface processes and global cycling, high-temperature processes and cosmochemistry, and lastly human studies and biomedical applications. The current state of the art in these major areas is discussed, and open questions and possible future directions are identified. In terms of its depth and coverage, the current work extends and complements the previous reviews of Ca stable isotope geochemistry, addressing the needs of graduate students and advanced researchers who want to familiarize themselves with Ca stable isotope research.
Download or read book Isotopic Analysis written by Frank Vanhaecke and published by John Wiley & Sons. This book was released on 2012-04-24 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 ICP-MS.
Download or read book Stable Isotopes in Human Nutrition written by S. A. Abrams and published by CABI. This book was released on 2003-04-25 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of stable isotopes in nutritional studies is now widespread, and the technique is becoming increasingly popular. Practical applications are numerous and include:calcium and iron absorption studiesstudies looking at the impacts of diet, physical activity, aging, and medical therapy and supplementation on nutrient metabolismthe measurement of energy cost of pregnancystudies on the causes of growth faltering in infantsinvestigations into childhood and adult obesity.This book is designed as a laboratory handbook of methods used to perform stable isotope studies in humans. It covers basic principles, dosage information, sample preparation procedures, analytical instrumentation, and necessary mathematical methods and provides the fundamentals to enable researchers to evaluate and establish stable isotope methods in their own laboratories.
Download or read book Tracers in Metabolic Research written by Robert R. Wolfe and published by . This book was released on 1984-06 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kinetic Models of Trace Element and Mineral Metabolism During Development written by K. N. Siva Subramanian and published by CRC Press. This book was released on 2020-01-29 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kinetic models are becoming standard tools in the research of biological systems. They are used to represent hypotheses, analyze data, and design experiments to maximize the information obtained from a study. Kinetic Models of Trace Element and Mineral Metabolism During Development describes models for calcium, chromium, copper, iron, iodide, lead, mercury, selenium, zinc, and others in health and disease.
Download or read book Trace Mineral Studies with Isotopes in Domestic Animals written by and published by . This book was released on 1969 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Techniques in Nutritional research written by Roger Whitehead and published by Academic Press. This book was released on 2012-12-02 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: New Techniques in Nutritional Research contains the proceedings of the Ninth Annual Bristol-Myers Squibb/Mead Johnson Symposium on Nutrition Research held on September 11-13, 1989 in Cambridge, England. The papers highlight a number of novel techniques that are currently used in nutritional research, including the doubly labeled water method; the labeled bicarbonate method; X-ray computed tomography; neutron activation analysis; magnetic resonance imaging; and the application of stable isotope tracers. Divided into four sections encompassing 20 chapters, this volume begins with an overview of stable isotopes and their applications in nutrition science, including vitamin research, and in the investigation of mineral metabolism. It then discusses modern approaches for measuring energy expenditure and body composition, classical and modern methods of anthropometry, measurement of bone mineral content in vivo, and imaging techniques in analysis of bone status. Nutritional scientists will find this book a useful source of information related to the field.
Download or read book Isotopes for Medicine and the Life Sciences written by Institute of Medicine and published by National Academies Press. This book was released on 1995-01-27 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radioactive isotopes and enriched stable isotopes are used widely in medicine, agriculture, industry, and science, where their application allows us to perform many tasks more accurately, more simply, less expensively, and more quickly than would otherwise be possible. Indeed, in many casesâ€"for example, biological tracersâ€"there is no alternative. In a stellar example of "technology transfer" that began before the term was popular, the Department of Energy (DOE) and its predecessors has supported the development and application of isotopes and their transfer to the private sector. The DOE is now at an important crossroads: Isotope production has suffered as support for DOE's laboratories has declined. In response to a DOE request, this book is an intensive examination of isotope production and availability, including the education and training of those who will be needed to sustain the flow of radioactive and stable materials from their sources to the laboratories and medical care facilities in which they are used. Chapters include an examination of enriched stable isotopes; reactor and accelerator-produced radionuclides; partnerships among industries, national laboratories, and universities; and national isotope policy.
Download or read book Trace Mineral Studies with Isotopes in Domestic Animals written by Panel on the use of isotopes in studies of mineral metabolism and disease in domestic animals and published by . This book was released on 1969 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Human Calcium Metabolism Including Bone Resorption Measured with 41Ca Tracer written by and published by . This book was released on 1996 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accelerator mass spectrometry is so sensitive to small quantities of 41Ca that it might be used as a tracer in the study of human calcium kinetics to generate unique kinds of data. In contrast with the use of other Ca isotopic tracers, 41Ca tracer can be so administered that the tracer movements between the various body pools achieve a quasi steady state. Resorbing bone may thus be directly measured. We have tested such a protocol against a conventional stable isotope experiment with good agreement.
Download or read book Studies of Bone Mineral Metabolism by Means of Radioactive Tracers written by Carl Frederick Cramer and published by . This book was released on 1953 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mineral Metabolism in Bone Studies with X ray Sources and Radioactive Isotopes written by J. Shimmins and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stable Isotopes in Human Nutrition written by Fred Mellon and published by . This book was released on 1996 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a concise handbook of methodology detailing the use of stable isotopes in human studies of absorption and the metabolism of essential mineral and trace elements. Ideal for use in or near the laboratory Includes supplier listings and detailed examples and explanations of mathematical calculations used for obtaining results from typical studies Achieves an international perspective
