Results 61 to 70 of about 188,936 (339)
Valence Tautomerism in Chromium Half-Sandwich Triarylmethylium Dyads
Inorganics, 2023 Valence tautomerism (VT) may occur if a molecule contains two chemically different redox-active units, which differ only slightly in their intrinsic redox potential.
Anja Rehse +4 more
doaj +1 more source
ChemInform Abstract: THE REACTION OF HYDROGEN ATOMS WITH ACETYLENE [PDF]
Chemischer Informationsdienst, 1975 Abstract The addition of hydrogen atoms to acetylene has been investigated at room temperature. The relative rate constant for &H+C_2H_4→C_2H_5, \labeleq1 &H+C_2H_2→C_2H_3, \labeleq2 was found to be k1/k2=9.99±0.16.
Yoshimasa Takezaki, Toshio Ibuki
openaire +3 more sources
Monte Carlo modeling of radiation dose from radiation therapy with superficial x‐rays
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Introduction Superficial x‐rays (50–100 kVp) are used for treating non‐melanoma skin cancer and intraoperative radiation therapy (IORT). At these energies, the photoelectric effect significantly increases absorbed dose to bone compared to soft tissue.
Reham Barghash +3 more
wiley +1 more source
Journal of Chemistry, 2017 The mandatory presence of a chlorine atom on the aromatic ring of 6-hydroxy-3-formyl angular chromones, on the respiration inhibition of mammary carcinoma mouse, is explained through a computational study of these compounds.
Maximiliano Martínez-Cifuentes +2 more
doaj +1 more source
Hydrogen transfer reactions of interstellar Complex Organic Molecules [PDF]
, 2018 Radical recombination has been proposed to lead to the formation of complex organic molecules (COMs) in CO-rich ices in the early stages of star formation. These COMs can then undergo hydrogen addition and abstraction reactions leading to a higher or lower degree of saturation.
arxiv +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Introduction The use of radioactive materials in the United States has been tightly regulated by the Nuclear Regulatory Commission and other entities for many decades. In 2015, however, the Joint Commission began to require hospital‐based nuclear medicine departments to conduct shielding designs and evaluations for radioactive material areas ...
Michael Oumano +12 more
wiley +1 more source
Polarity reversal catalysis and enantioselective hydrogen-atom transfer [PDF]
, 1993 This thesis is divided into two sections: Section A Polarity reversal catalysis (PRC) is a method by which sluggish abstraction of electron deficient hydrogen by electrophilic radicals, such as t-butoxyl radical (But0.), can be accelerated.
Mok, Pearl Ling Ho
core
Probing the Electrostatic and Steric Requirements for Substrate Binding in Human Platelet-Type 12-Lipoxygenase. [PDF]
, 2019 Human platelet ALOX12 (hALOX12 or h12-LOX) has been implicated in a variety of human diseases. The present study investigates the active site of hALOX12 to more thoroughly understand how it positions the substrate and achieves nearly perfect regio- and ...
Aleem, Ansari Mukhtar +7 more
core +2 more sources
A Kinetic Approach of DPPH Free Radical Assay of Ferulate-Based Protic Ionic Liquids (PILs)
Molecules, 2018 The antiradical efficiency (AE) and kinetic behavior of a new ferulate-based protic ionic liquids (PILs) were described using 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical assay.
Nur Afiqah Ahmad +5 more
doaj +1 more source
Hydrogen abstraction from metal surfaces: When electron-hole pair excitations strongly affect hot-atom recombination [PDF]
Phys. Chem. Chem. Phys., 2016,18, 31378-31383Using molecular dynamics simulations, we predict that the inclusion of nonadiabatic electronic excitations influences the dynamics of preadsorbed hydrogen abstraction from the W(110) surface by hydrogen scattering. The hot-atom recombination, which involves hyperthermal diffusion of the impinging atom on the surface, is significantly affected by the ...
arxiv +1 more source