Results 21 to 30 of about 9,679,616 (302)

Deuterated Arachidonic Acid Ameliorates Lipopolysaccharide-Induced Lung Damage in Mice

open access: yesAntioxidants, 2022
Arachidonic acid (ARA) is a major component of lipid bilayers as well as the key substrate for the eicosanoid cascades. ARA is readily oxidized, and its non-enzymatic and enzymatic oxidation products induce inflammatory responses in nearly all tissues ...
Alla Y. Molchanova   +12 more
doaj   +1 more source

Predictive JET current ramp-up modelling using QuaLiKiz-neural-network

open access: yesNuclear Fusion, 2023
This work applies the coupled JINTRAC and QuaLiKiz-neural-network (QLKNN) model on the ohmic current ramp-up phase of a JET D discharge. The chosen scenario exhibits a hollow $T_\mathrm{e}$ profile attributed to core impurity accumulation, which is ...
A. Ho   +14 more
doaj   +1 more source

Stable Isotope Abundance and Fractionation in Human Diseases

open access: yesMetabolites, 2021
The natural abundance of heavy stable isotopes (13C, 15N, 18O, etc.) is now of considerable importance in many research fields, including human physiology. In fact, it varies between tissues and metabolites due to isotope effects in biological processes,
Illa Tea   +9 more
doaj   +1 more source

Effect of the isotope mass on pedestal structure, transport and stability in D, D/T and T plasmas at similar β N and gas rate in JET-ILW type I ELMy H-modes

open access: yesNuclear 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
doaj   +1 more source

Strontium isotope effect on Solid-Liquid extraction system using a polymer resin with 2.2.2-Cryptand anchor groups [PDF]

open access: yesمجله 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
doaj   +1 more source

Isotope Effect in Thermal Conductivity of Polycrystalline CVD-Diamond: Experiment and Theory

open access: yesCrystals, 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
doaj   +1 more source

Stable carbon and radiocarbon isotope compositions of particle size fractions to determine origins of sedimentary organic matter in an estuary [PDF]

open access: yes, 2002
Stable and radioactive carbon isotopic compositions of particle size fractions of a surface sediment from the Ems-Dollard estuary vary considerably with particle size. The organic material in the fine fractions (
Megens, L.,   +7 more
core   +1 more source

Anomalous isotope effect in BCS superconductors with two boson modes

open access: yesNew 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
doaj   +1 more source

Intermolecular Interactions and Spectroscopic Signatures of the Hydrogen-Bonded System—n-Octanol in Experimental and Theoretical Studies

open access: yesMolecules, 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
doaj   +1 more source

On the frequency and isotope effect in sonochemistry

open access: yesUltrasonics 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
openaire   +3 more sources

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