Huston D Isotopes in Economic Geology, Metallogenesis and Exploration 2023 | 19.13 MB
N/A | 483 Pages

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Free Download Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt, "Radiogenic Isotopes in Geologic Processes"
English | 2009 | pages: 312 | ISBN: 9048129982, 9400791909 | PDF | 2,6 mb
Do we actually understand geologic processes? New technology brings new inf- mation and perceptions, which sometimes overturn imaginations based on simple observation and estimation, in conjunction with common sense inference. In 1902- 1904,PierreCurieandErnestRutherford?rstformulatedtheideaofusingradioactive transformation of nuclides as a geologic chronometer. After a century of working with such tools, geology has advanced from a descriptive science to an analytic s- encethatformulatesconclusionsbasedonexactvalues.Thetechnologyofradiogenic isotope geology has created a branch of science that considers the Earth as a planet generated within a Solar system and studies the subsequent evolution of geologic processes that has resulted in the present formation of our planet's continents and oceans. The physicist Vitaly Ginsburg, Nobel Prize laureate, wrote recently: "If Kepler had been given information on orbital parameters of planets with modern precision, he would not have been able to formulate his laws". Indeed, after development of laws of celestial mechanics, methods of measurements became so advanced and such numerous secondary distortion effects were found that to describe an orbit of a cosmic body by a curve of the second order would appear impossible. But it does not mean that Kepler's laws are "cancelled"; they still occupy an honorable place in courses on celestial mechanics. A reasonable division into basic and secondary phenomena is accepted and the latter are entered as variations in the basic equations.

Siegwolf R Stable Isotopes in Tree Rings 2022 | 26.28 MB
English | 775 Pages

Title: Stable Isotopes in Tree Rings: Inferring Physiological, Climatic and Environmental Responses (Tree Physiology, 8)
Author: Rolf T. W. Siegwolf
Year: 2022

OECD, Nuclear Energy Agency, "The Supply of Medical Isotopes An Economic Diagnosis and Possible Solutions"
English | 2019 | pages: 126 | ISBN: 9264945504 | PDF | 3,1 mb
This report explores the main reasons behind the unreliable supply of Technetium-99m (Tc-99m) in health-care systems and policy options to address the issue. Tc-99m is used in 85% of nuclear medicine diagnostic scans performed worldwide - around 30 million patient examinations every year. These scans allow diagnoses of diseases in many parts of the human body, including the skeleton, heart and circulatory system, and the brain. Medical isotopes are subject to radioactive decay and have to be delivered just-in-time through a complex supply chain. However, ageing production facilities and a lack of investment have made the supply of Tc-99m unreliable. This report analyses the use and substitutability of Tc-99m in health care, health-care provider payment mechanisms for scans, and the structure of the supply chain. It concludes that the main reasons for unreliable supply are that production is not economically viable and that the structure of the supply chain prevents producers from charging prices that reflect the full costs of production and supply.

Isotopes and the Natural Environment by Paul Alexandre
English | PDF | 2020 | 99 Pages | ISBN : 3030336514 | 5.7 MB
This book provides straightforward and practical information on isotopes applied to a variety of natural sciences. It covers the basics of isotopes and includes detailed examples from a range of natural sciences: ecology, biology, human health, environment and climate, geography, and geology, highlighting their applicability in these fields. It is a must-read for all advanced-undergraduate and graduate students working with isotopes, regardless of the area, and is a very useful one-stop resource for scientists starting in isotope research.