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Showing 1 to 20 of 98 for “"isotope effect"”.

  1. Isotope Effect for Diffusion of Iron in Vanadium

    Coleman, Michael GarmUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-10T17:57:50Z (GMT). No. of bitstreams: 1 6801725.pdf: 806525 bytes, checksum: f6fe0bbf6bd8256ba370701661fe0387 (MD5) Previous issue date: 1967

    uiuc Repository record

  2. A Study Of The Xenon Vapour Pressure Isotope Effect

    Alamre, Amal AbdullahCarleton University2020

    … research was to study the xenon vapour pressure isotope effect (VPIE) and this was done to explore the feasibility of doing the Xe enrichment, using a 1.83 m high, cryogenic distillation column at Carleton University. One of the famous isotopes for the 0vββ decay detection is 136Xe which is not …

    carleton Repository record

  3. Silver Diffusion and Isotope Effect in Silver-Rubidium-Iodide

    Arzigian, James SimonUniversity of Illinois at Urbana-Champaign2015

    The diffusion coefficient of silver in silver rubidium iodide (RbAg(,4)I(,5)) has been measured in both superionic phases using radiotracer Ag-110m and serial sectioning with a low temperature sectioning apparatus. The activation energies for diffusion in alpha-RbAg(,4)I(,5) and beta-RbAg(,4)I(,5), …

    uiuc Repository record

  4. Silver diffusion and isotope effect in silver rubidium iodide

    Arzigian, James Simon2011

    Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-20T19:20:16Z No. of bitstreams: 1 1980_arzigian.pdf: 1906210 bytes, checksum: e338823456f757c5e2493b0692df7443 (MD5)

    uiuc Repository record

  5. Isotope effect for diffusion of tin in beta-titanium

    Jackson, Mark Sennett2011

    The isotope effect for diffusion of in Ti has been measured at five temperatures in the bcc G-phase. Separation of the Sn isotopes was effected by 3-spectroscopy on electroplated sources. The effect is small and highly temperature-dependent, varying from 0.18 ± 0.03 at 9720 C to 0.37 ± 0.03 at …

    uiuc Repository record

  6. Carbon Isotope Effect Studies of the Decarbonylation of Formic Acid

    Haschemeyer, Rudy HarmUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-05T19:36:44Z (GMT). No. of bitstreams: 1 0025225.pdf: 3702059 bytes, checksum: 40c1692e40197262edcb196e97f17941 (MD5) Previous issue date: 1957

    uiuc Repository record

  7. Isotope Effect and Diffusivity Measurements in Equi-Atomic Iron-Cobalt Alloys

    Fishman, Steven GeraldUniversity of Illinois at Urbana-Champaign2015

    Made available in DSpace on 2015-05-12T21:41:03Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7013308.PDF: 1233761 bytes, checksum: 0b2a5521df8458d91e04f65c41767adc (MD5) Previous issue date: 1969

    uiuc Repository record

  8. Intermolecular Carbon-13 Kinetic Isotope Effect in the Thermal Structuralisomerization of Cyclopropane

    Sims, Leslie BerlUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-09T17:35:48Z (GMT). No. of bitstreams: 1 6711922.pdf: 6434035 bytes, checksum: 0833c7069c2960fd1a7276501a99f19b (MD5) Previous issue date: 1967

    uiuc Repository record

  9. Deuterium Enrichment and the Kinetic Isotope Effect during Ruthenium Catalyzed Fischer-Tropsch Synthesis

    Naumovitz, JenniferEastern Kentucky University

    … is about 1.4, indicating a normal isotope effect. However, the ratio of [1-alkene]H/[1-alkene]D was around 0.9, indicating a different pathway for production than 2-olefins. We attempt to explain these experimental facts by the modified alkylidene mechanism. </p>

    eku Repository record

  10. Kinetic Isotope Effect of the Oxidative Addition Reaction of Hydrogen to Vaska's Compound

    Blumer, David JamesUniversity of Illinois at Urbana-Champaign2014

    … range 0-50(DEGREES)C in toluene. The kinetic isotope effect, i.e., the ratio of the rate constants k(,H(,2))/k(,D(,2)), was determined over this temperature range. The kinetic isotope effect varies substantially with temperature, being inverse (k(,H(,2))/k(,D(,2)) = 0.848 at 0(DEGREES)C, …

    uiuc Repository record

  11. Fundamentals and Applications of the Hydrogen /Deuterium Isotope Effect in Improved Hot -Carrier Reliability of MOS Devices

    Cheng, KangguoUniversity of Illinois at Urbana-Champaign2015

    *Originally published in DAI Vol. 62, No. 6. Reprinted here with corrected author name.

    uiuc Repository record

  12. Carbon-13 Kinetic Isotope Effect Studies in the Oxidation of Formic Acid/formate Ion by Thallium (Iii) and Cobalt (Iii) Ions

    Schaefer, Helen SchwarzUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-13T20:10:34Z (GMT). No. of bitstreams: 1 7913601.pdf: 4483498 bytes, checksum: 71e0b0b1fe95a3525439f6e683632e50 (MD5) Previous issue date: 1978

    uiuc Repository record

  13. Deuterium Tracer Studies Of The Mechanism Of Cobalt Catalyzed Fischer-Tropsch Synthesis

    Jin, ChunfenEastern Kentucky University

    … experiments, and found that there is an inverse isotope effect during FTS and there is deuterium enrichment in the hydrocarbon products. The presence of the inverse isotope effect was indicated from the H₂/D₂ switch experiments by an increase in CO conversion by changing the syngas reagent from …

    eku Repository record

  14. The primary hydrogen kinetic isotope effect in the elimination from 2-phenethyl systems : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science with Honours in Chemistry at Massey University

    Woodhead, John Leslie1974

    massey

  15. The low temperature magnetic susceptibility of palladium hydride and palladium deuteride

    Miller, Robert James2011

    … to the two-phase nature of these systems. No isotope effect has been detected in the atomic ratio corresponding to the S-phase boundary (S-min) at these low temperatures. The values of S-min were found to decrease slightly with increasing temperature from 0.638 ± .010 at 5.8 K to 0.624 ± .004 …

    uiuc Repository record

  16. Wintertime nitrate isotope dynamics in the Atlantic sector of the Southern Ocean

    Smart, SandiDepartment of Oceanography2014

    … patterns of the nitrogen (N) and oxygen (O) isotopes of seawater nitrate for the region south of Africa. Water column profile and underway surface samples collected in July 2012 span a range of latitudes from the subtropics to 57.8°S, just beyond the Antarctic winter sea-ice edge (56.7°S). …

    cape-town Repository record

  17. Palladium-Catalyzed Alkenylsilanol Cross -Coupling Reactions: Method Development and Mechanistic Analysis

    Sweis, Ramzi FarahUniversity of Illinois at Urbana-Champaign2015

    … through the natural abundance 13C NMR kinetic isotope effect (KIE) studies. This provided evidence for either palladium-olefin complexation or a Heck-type carbometalation as the turnover-limiting step for these cross-coupling reactions.

    uiuc Repository record

  18. Lewis Base Catalyzed Enantioselective Aldol Additions: Preparative and Mechanistic Studies

    Pham, Son MinhUniversity of Illinois at Urbana-Champaign2015

    … Finally, natural abundance 13C NMR kinetic isotope effect (KIE) studies have determined aldolization to be rate limiting.

    uiuc Repository record

  19. Physical and Electrical Properties of Hot -Carrier Degradation of Silicon *Mos Transistors Processed in Deuterium and Hydrogen

    Chen, ZhiUniversity of Illinois at Urbana-Champaign2015

    … injection."" New experiments for the deuterium isotope effect for hot-hole and hot-electron injection have been performed to probe the mechanism for the interface trap generation in n-MOS transistors in the presence of hot-hole and hot-electron injection. It is shown that channel hot electrons, …

    uiuc Repository record

  20. Chiral Homoenolate Synthetic Equivalents: Mechanistic, Structural, and Kinetic Investigations

    Pippel, Daniel JamesUniversity of Illinois at Urbana-Champaign2015

    … with thermodynamic parameters, an extremely high isotope effect, and computer simulations.

    uiuc Repository record

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