Results 121 to 130 of about 1,566,044 (372)
Implementation of chemistry in the Athena++ code [PDF]
arXiv, 2023 Chemistry plays a key role in many aspects of astrophysical fluids. Atoms and molecules are agents for heating and cooling, determine the ionization fraction, serve as observational tracers, and build the molecular foundation of life. We present the implementation of a chemistry module in the publicly available magneto-hydrodynamic code Athena++.
arxiv
The Role of Electron Transfer Dissociation in Modern Proteomics
Analytical Chemistry, 2017 In the nearly fifteen years since electron transfer dissociation (ETD) was introduced,1 bioanalytical mass spectrometry (MS) and MS-driven proteomics have continued to develop as the premier tools for characterizing proteome composition, structure, and ...
N. Riley, J. Coon
semanticscholar +1 more source
Quantum chemical studies of redox properties and conformational changes of a four-center iron CO2 reduction electrocatalyst. [PDF]
, 2018 The CO2 reduction electrocatalyst [Fe4N(CO)12]- (abbrev. 1-) reduces CO2 to HCO2- in a two-electron, one-proton catalytic cycle. Here, we employ ab initio calculations to estimate the first two redox potentials of 1- and explore the pathway of a side ...
Berben, Louise A +5 more
core +2 more sources
Molecular Oncology, EarlyView.Chronic TGF‐β exposure drives epithelial HCC cells from a senescent state to a TGF‐β resistant mesenchymal phenotype. This transition is characterized by the loss of Smad3‐mediated signaling, escape from senescence, enhanced invasiveness and metastatic potential, and upregulation of key resistance modulators such as MARK1 and GRM8, ultimately promoting
Minenur Kalyoncu +11 more
wiley +1 more source
Propriedades relacionadas à acidez e basicidade a partir da abordagem em química computacional
Química Nova, 2014 Analytical Chemistry books lack a clear link between thermodynamic and equilibrium approaches involving acids and bases. In this work, theoretical calculations were performed to search for these relations.
Sérgio R. B. Silva +2 more
doaj +1 more source
Antioxidant Motifs in Flavonoids: O–H versus C–H Bond Dissociation
ACS Omega, 2019 Flavonoids provide potential health benefits due to their antioxidant properties. The antioxidant activity of natural flavonoids is primarily exerted by phenolic hydroxyl groups; however, C–H bonds also contribute to these properties.
Q. Vo +5 more
semanticscholar +1 more source
, 1997 The electronic structure of the hydrogen molecule in a magnetic field is investigated for parallel internuclear and magnetic field axes. The lowest states of the $\Pi$ manifold are studied for spin singlet and triplet$(M_s = -1) $ as well as gerade and ...
A. V. Korolev +36 more
core +1 more source
Fragmentation dynamics of the ethyl bromide and ethyl iodide cations: a velocity-map imaging study [PDF]
, 2014 The photodissociation dynamics of ethyl bromide and ethyl iodide cations (C2H5Br+ and C2H5I+) have been studied. Ethyl halide cations were formed through vacuum ultraviolet (VUV) photoionization of the respective neutral parent molecules at 118.2 nm, and
Ashfold, Michael N. R. +5 more
core +2 more sources
FEBS Open Bio, EarlyView.Activation of amino acids by aminoacyl‐tRNA synthetases can be followed by a modified ATP/PPi exchange assay using radiolabelled γ‐[32P]ATP. The reaction is quenched at certain time points, followed by separation of the product ([32P]PPi) from the substrate (γ‐[32P]ATP) by thin‐layer chromatography (TLC).
Igor Živković +4 more
wiley +1 more source
Free radical OH, a molecule of astrophysical and aeronomic interest [PDF]
The chemistry and physics of the gaseous OH free radical as it applies to interstellar space, planetary atmospheres, and the sun is presented. Topics considered are: (1) rotational-vibrational transitions; (2) dissociation and ionization processes; (3 ...
Mohan, H., SHARDANAND
core +1 more source