Last edited by Mozragore
Friday, May 8, 2020 | History

5 edition of Isotopic effects found in the catalog.

# Isotopic effects

## recent developments in theory and experiment

Written in English

Subjects:
• Chemical kinetics.,
• Isotopes.

• Edition Notes

Includes bibliographical references and index.

Classifications The Physical Object Statement edited by E. Buncel and C.C. Lee. Series Isotopes in organic chemistry ;, v. 6 Contributions Buncel, E., Lee, C. C. 1924- LC Classifications QD502 .I76 1984 Pagination xi, 265 p. : Number of Pages 265 Open Library OL2846037M ISBN 10 0444423680 LC Control Number 84008132

From earlier work on the "isotope effect" in germanium, it is believed that the occasional carbon atom (which is 8 percent heavier than a carbon atom) in the diamond lattice impedes the transmission of heat by interfering with the passage of phonons, like a speed bump slows traffic on an otherwise smooth highway. From the reviews: "This is the first book in world literature devoted to applications of the isotopic effects in solids. references and a detailed index are given at the very end. The main aim of this book to familiarize readers with present and some future applications in .

The earliest Eoarchean juvenile rocks and Hadean zircons have isotopic compositions that reflect the integrated effects of separation of an early enriched reservoir and fractionation of Ca-silicate and Mg-silicate perovskite from the terrestrial magma oceans associated with Earth accretion and Moon formation, superposed on subsequent crustal. "This is the first book devoted to applications of the isotope effect in solids. It is addressed to physicists, chemists, electronic engineers and materials scientists alike, .

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Applications of the Isotopic Effect in Solids (Springer Series in Materials Science) [Vladimir G. Plekhanov] on *FREE* shipping on qualifying offers. Readers intent on mastering the basics should start by reading the first few overview chapters and then delve into the descriptions of specific current applications to see how they actually work.

Isotope Effects on Reaction Rates [Lars Melander] on *FREE* shipping on qualifying offers. Books Advanced Search New Releases Best Sellers & More Children's Books Textbooks Textbook Rentals Sell Us Your Books Best Books of the Month Cited by: "This is the first book in world literature devoted to applications of the isotopic effects in solids.

references and a detailed index are given at the very end. The main aim of this book to familiarize readers with present and some future applications in isotopic science and engineering was successful.

Isotopic effects ** Although in many respects the chemistry of the isotopes of an element is the same, there are significant differences between them due to difference in masses. ** Thus the physical properties of the compounds of each isotope of. This book provides experimental and theoretical evidence of the phenomenon of thermodynamically ordered distribution of isotopes in biological systems.

This book consists of 12 chapters and opens with an overview of the causes of fractionation of isotopes, along with concepts such as isotopic composition and isotopic effects. The effect of isotopic substitution on an @[email protected] is referred to as a thermodynamic (or equilibrium) @[email protected]

For example, the effect of isotopic substitution in reactant A that participates in the equilibrium: $\text{A}+\text{B}\rightleftharpoons \text{C}$ is the ratio Isotopic effects book of the @[email protected] for the reaction in which A contains the light isotope to that Isotopic effects book.

Side Effects by Michael Palmer Published January 1st by Bantam (first published January 1st ) medical thriller Considering the publication dates, this novel seemed very contemporary to me. The basic elements developed in the story are timeless/5(87). In physical organic chemistry, a kinetic isotope effect (KIE) is the change in the reaction rate of a chemical reaction when one of the atoms in the reactants is replaced by one of its isotopes.

Formally, it is the ratio of rate constants for the reactions involving the light (k L) and the heavy (k H) isotopically substituted reactants (isotopologues).

The manuscript also reviews radioactive noble gases in the terrestrial environment, isotope effects of nitrogen in the soil and biosphere, and oxygen and hydrogen isotope geochemistry of deep basin brines.

The selection is a vital source of data for researchers interested in isotope geochemistry. Deuterium Isotope Effects for Probing Aspects of the Interaction of H–H and C–H Bonds with Transition Metals Introduction.

It is well known that the measurement of kinetic deuterium isotope effects (i.e. k H / k D) provides a useful means to ascertain details of the nature of the transition state for the rate determining step of a reaction that involves cleavage of an X–H bond.

Isotopic Effect. Reference work entry. First Online: 16 October DOI: Search within book. Type for suggestions. Table of contents Previous. Page Bibliographic information. Isotope Fractionation. Isotope-Selective Photolysis. Isotopic Effect. Isotopic Exchange Reaction. Isotopic Fractionation (Interstellar Medium) Isotopic.

To accurately interpret isotopic data obtained for volatile organic compounds (VOCs) dissolved in groundwater systems, the isotopic effects of subsurface processes must be understood.

Previous work has demonstrated that volatilization and dissolution of BTEX and chlorinated ethene compounds are not significantly isotopically fractionating. This study characterized the carbon isotopic effects. where D is the isotopic fractionation, A is the isotope effect caused by diffusion of CO 2 into the plant (‰), B is the isotope effect caused by enzymatic (photosynthetic) fixation of carbon (‰), and C i /C a is the ratio of internal to atmospheric CO 2 contents.

The magnitude of the fractionation depends on the values of the above. Magnetic isotope effect can cause mass-independent isotope fractionation, which can be used to predict the mechanisms of chemical reactions. In this critical paper, the isotope fractionation caused.

Isotope effect may refer to: Disambiguation page providing links to topics that could be referred to by the same search term This disambiguation page lists articles associated with the title Isotope effect.

If an internal link led you here, you may wish to change the link to point directly to the intended article. Robert Michener is the Laboratory Manager of the Boston University Stable Isotope Laboratory and has been running the internationally recognized facility for 18 years. His research interests include aquatic ecology, food web systems, and how stable isotopes can be applied to tracing pollutants, comparing pristine and impacted systems.

In this work, we present a global view of the impact of isotopic substitutions on the spectra of eleven ethylene isotopologues obtained from variational calculations using accurate ab initio potential energy and dipole moment surfaces.

This may lead to some important changes in the molecular spectra due to symmetry breaking effects lowering the initial D 2h symmetry of 12 C 2 H 4 (12 CH 2 Considerable variations in the isotopic composition of monthly precipitation occur at most stations. At low latitudes the amount effect accounts for the variations, whereas seasonal variation at high latitudes is ascribed to the temperature effect.

Tokyo is an example of a mid latitude station influenced by both effects. Using isotopic effect in nanostructures Article (PDF Available) in Life Science Journal January with 14 Reads How we measure 'reads'. ISBN: OCLC Number: Description: xi, pages: illustrations ; 25 cm.

Contents: Isotope effects on ¹³C NMR shifts and coupling constants / by David A. Forsyth --The effect of pressure on kinetic isotope effects / by Neil S. Isaacs --Magnetic isotope effects / by Nicholas J.

Turro and Bernhard Kraeutler --Bond order methods for calculating isotope effects. Other articles where Isotope effect is discussed: reaction mechanism: Kinetic isotope effects: Isotopes are atoms that have the same atomic number (and, hence, generally the same chemistry) but different mass.

The difference in mass becomes chemically important in certain instances. For example, when a carbon-hydrogen bond is replaced by a carbon-deuterium bond (deuterium being.ISOTOPE effect in IR Spectroscopy ISOTOPE EFFECTS.

The different isotopes in a particular species may give fine detail in infrared spectroscopy. For example, the O-O stretching frequency of oxy hemocyanin is experimentally determined to be and cm −1 for ν (16 O O) and ν(18 O O) respectively.

By considering the O-O as a spring.The isotopic effect on the electrochemical CO2 reduction reaction (CO2RR) is investigated in this study.

A higher CO2RR selectivity over its competing hydrogen evolution reaction was observed in D2O-based electrolytes compared with the H2O-based counterparts, which can be attributed to the lower [D+] concent Jump to main content.