Results 11 to 20 of about 120,968 (266)
The Journal of Physical Chemistry Letters, 2023 In this Perspective, we present examples of isotope effects that originate from noncovalent interactions, mainly hydrogen bonding, electrostatics, and confinement. They are traditionally widely used in isotopic enrichment processes, as well as in studies of mechanisms of different (bio)chemical and physical phenomena. We then show the emerging areas of
Mateusz Pokora +2 more
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Nuclear Fusion, 2023 The work describes the pedestal structure, transport and stability in an effective mass ( A _eff ) scan from pure deuterium to pure tritium plasmas using a type I ELMy H-mode dataset in which key parameters that affect the pedestal behaviour (normalized ...
L. Frassinetti +32 more
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Strontium isotope effect on Solid-Liquid extraction system using a polymer resin with 2.2.2-Cryptand anchor groups [PDF]
مجله علوم و فنون هستهای, 2020 The chemical isotope exchange with macrocyclic polyethers is one of the relatively new methods for isotope separation. These separations are based on the phenomenon of isotope effect, in which the kinetic and the stability of the complex formation ...
E. Zolfonoun
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Isotope Effect in Thermal Conductivity of Polycrystalline CVD-Diamond: Experiment and Theory
Crystals, 2021 We measured the thermal conductivity κ(T) of polycrystalline diamond with natural (natC) and isotopically enriched (12C content up to 99.96 at.%) compositions over a broad temperature T range, from 5 to 410 K.
Alexander V. Inyushkin +4 more
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Anomalous isotope effect in BCS superconductors with two boson modes
New Journal of Physics, 2021 The isotope effect in the superconducting transition temperature is anomalous if the isotope coefficient α < 0 or α > 1/2. In this work, we show that such anomalous behaviors can naturally arise within the Bardeen–Cooper–Schrieffer framework if both ...
Gan Sun +4 more
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Molecules, 2022 n-Octanol is the object of experimental and theoretical study of spectroscopic signatures and intermolecular interactions. The FTIR measurements were carried out at 293 K for n-octanol and its deuterated form.
Michał Pocheć +4 more
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On the frequency and isotope effect in sonochemistry
Ultrasonics Sonochemistry, 1997 In the first part of the work, it was observed, by a relative method, that the Weissler reaction and the Br2-catalysed isomerisation of maleic acid into fumaric acid are faster at 20 kHz than at 1.7 MHz. The difference between the relative reaction rates can be considered as small when the two order magnitude difference between the two frequencies is ...
Dekerckheer, Catherine +2 more
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Isotope Effect in the Activation of a Mechanophore [PDF]
Journal of the American Chemical Society, 2020 In mechanochemistry, molecules under tension can react in unexpected ways. The reactivity of mechanophores (mechanosensitive molecules) can be controlled using various geometric or electronic factors. Often these factors affect the rate of mechanical activation but sometimes give rise to alternative reaction pathways. Here we show that a simple isotope
Robert Nixon, Guillaume De Bo
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mSphere, 2021 Analysis of nitrogen isotope fractionation effects is useful for tracing biogeochemical nitrogen cycle processes. Nitrification can cause large nitrogen isotope effects through the enzymatic oxidation of ammonia (NH3) via nitrite (NO2−) to nitrate (NO3−)
Shurong Liu +5 more
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Isotope mass dependence of pedestal transport in JET H-mode plasmas
Nuclear Fusion, 2023 We present a comparative transport analysis of the isotope mass dependence in the pedestal of two pairs of deuterium/hydrogen type I ELMy H-mode discharges in JET with ITER-like wall, one characterized by the same input power, the other one by the same ...
I. Predebon +8 more
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