Results 11 to 20 of about 725,727 (302)

Quantum Chemical Studies on the Inhibiting Effect of New Synthesized Bipyrazols of C38 Steel Corrosion in 1M HCl

open access: yesInternational Journal of Electrochemical Science, 2013
The inhibitory activity of new synthesized and characterised bipyrazol derivatives: methyl 2- (bis[(3,5-dimethyl-1H-pyrazol-1-yl)methyl]amino)-4-methylpentanoate (BT39), methyl 2- (bis[(3,5-dimethyl-1H-pyrazol-1-yl)methyl]amino)-3-meyhylbutanoate (BT40 ...
A. Guendouz   +8 more
doaj   +1 more source

Simulating chemistry using quantum computers [PDF]

open access: yes, 2010
The difficulty of simulating quantum systems, well-known to quantum chemists, prompted the idea of quantum computation. One can avoid the steep scaling associated with the exact simulation of increasingly large quantum systems on conventional computers ...
Alejandro Perdomo-Ortiz   +14 more
core   +2 more sources

Semiempirical quantum–chemical methods [PDF]

open access: yesWIREs Computational Molecular Science, 2013
The semiempirical methods of quantum chemistry are reviewed, with emphasis on established neglect of diatomic differential overlap‐based methods (MNDO, AM1, PM3) and on the more recent orthogonalization‐corrected methods (OM1, OM2, OM3). After a brief historical overview, the methodology is presented in nontechnical terms, covering the underlying ...
openaire   +2 more sources

An Antioxidant Potential, Quantum-Chemical and Molecular Docking Study of the Major Chemical Constituents Present in the Leaves of Curatella americana Linn

open access: yesPharmaceuticals, 2018
Reactive oxygen species (ROS) are continuously generated in the normal biological systems, primarily by enzymes as xanthine oxidase (XO). The inappropriate scavenging or inhibition of ROS has been considered to be linked with aging, inflammatory ...
Mayara Amoras Teles Fujishima   +8 more
doaj   +1 more source

New Approaches for ab initio Calculations of Molecules with Strong Electron Correlation [PDF]

open access: yes, 2016
Reliable quantum chemical methods for the description of molecules with dense-lying frontier orbitals are needed in the context of many chemical compounds and reactions.
Hedegård, Erik Donovan   +7 more
core   +3 more sources

New insights in chemical reactivity from quantum chemical topology [PDF]

open access: yesJournal of Computational Chemistry, 2021
AbstractBased on the quantum chemical topology of the modified electron localization function ELFx, an efficient and robust mechanistic methodology designed to identify the favorable reaction pathway between two reactants is proposed. We first recall and reshape how the supermolecular interaction energy can be evaluated from only three distinct terms ...
Klein, Johanna   +2 more
openaire   +3 more sources

Microscopic quantum point contact formation as the electromigration mechanism in granular superconductor nanowires

open access: yesNew Journal of Physics, 2022
Granular aluminium is a high kinetic inductance thin film superconductor which, when formed into nanowires can undergo an intrinsic electromigration process.
Tommy C Bartolo   +7 more
doaj   +1 more source

Fabrications of electrochemical sensors based on carbon paste electrode for vitamin detection in real samples

open access: yesJournal of Electrochemical Science and Engineering, 2022
This review article examines some advancements in electrochemical sensors for vitamin detection in the past few decades. Vitamins are micronutrients found in natural foods essential for maintaining good health.
Vaishnavi Sharma   +1 more
doaj   +1 more source

Inverse Quantum Chemistry: Concepts and Strategies for Rational Compound Design [PDF]

open access: yes, 2014
The rational design of molecules and materials is becoming more and more important. With the advent of powerful computer systems and sophisticated algorithms, quantum chemistry plays an important role in rational design.
Reiher, Markus, Weymuth, Thomas
core   +1 more source

MATHEMATICAL AND QUANTUM CHEMICAL STUDIES FOR THE CORROSION INHIBITION OF STEEL IN HCL ACID

open access: yesDiyala Journal of Engineering Sciences, 2010
The application of empirical and quantum chemical models on the corrosion inhibition of steel in hydrochloric acid in presence of phenylthiourea (PTU) as corrosion inhibitor have been modeled.
Anees A. Khadom
doaj   +1 more source

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