Results 21 to 30 of about 37,778 (278)

Quantum Zeno Suppression of Intramolecular Forces [PDF]

open access: yesPhysical Review Letters, 2017
We show that Born-Oppenheimer surfaces can intrinsically decohere, implying loss of coherence among constituent electronic basis states. We consider the example of interatomic forces due to resonant dipole-dipole interactions within a dimer of highly excited Rydberg atoms, embedded in an ultracold gas.
openaire   +5 more sources

Molecular Dynamics of CH4/N2 Mixtures on a Flexible Graphene Layer: Adsorption and Selectivity Case Study

open access: yesFrontiers in Chemistry, 2019
We theoretically investigate graphene layers, proposing them as membranes of subnanometer size suitable for CH4/N2 separation and gas uptake. The observed potential energy surfaces, representing the intermolecular interactions within the CH4/N2 gaseous ...
Jelle Vekeman   +8 more
doaj   +1 more source

Modeling molecular ensembles with gradient-domain machine learning force fields [PDF]

open access: yes, 2023
Gradient-domain machine learning (GDML) force fields have shown excellent accuracy, data efficiency, and applicability for molecules with hundreds of atoms, but the employed global descriptor limits transferability to ensembles of molecules.
Alexandre, Tkatchenko   +4 more
core   +1 more source

On the many‐body nature of intramolecular forces in FFLUX and its implications [PDF]

open access: yesJournal of Computational Chemistry, 2020
AbstractFFLUX is a biomolecular force field under construction, based on Quantum Chemical Topology (QCT) and machine learning (kriging), with a minimalistic and physically motivated design. A detailed analysis of the forces within the kriging models as treated in FFLUX is presented, taking as a test example a liquid water model.
Anton Konovalov   +2 more
openaire   +4 more sources

Semi-interpenetrating polymer networks based on N-isopropylacrylamide and 2-acrylamido-2-methylpropane sulfonic acid for intramolecular force-compensated sensors [PDF]

open access: yes, 2020
Stimulus-responsive hydrogels are swellable polymers that take up a specific volume depending on a measured variable present in solution. Hydrogel-based chemical sensors make use of this ability by converting the resulting swelling pressure, which depends
Binder, Simon   +3 more
core   +1 more source

NMR-Based Configurational Assignments of Natural Products: Gibbs Sampling and Bayesian Inference Using Floating Chirality Distance Geometry Calculations

open access: yesMarine Drugs, 2021
Floating chirality restrained distance geometry (fc-rDG) calculations are used to directly evolve structures from NMR data such as NOE-derived intramolecular distances or anisotropic residual dipolar couplings (RDCs).
Stefan Immel   +2 more
doaj   +1 more source

Research Progress on Acid Resistance Modification of Enzymes and Application in Ochratoxin A Degradation [PDF]

open access: yesShipin Kexue, 2023
Proteases have the advantages of high catalytic efficiency and strong specificity, which are widely used in food, chemical, medicine and other industrial fields.
ZHAO Zitong, ZHANG Zhenzhen, ZHANG Haoxiang, RUAN Li, LIANG Zhihong, WANG Honglei
doaj   +1 more source

Intramolecular Force Field of some Tetrahedral Molecules and Ions [PDF]

open access: yesZeitschrift für Naturforschung A, 1972
Abstract The orbital valence force field (OVFF), and the Urey-Bradley force field (UBFF) have been employed to calculate the force constants for six molecules and ions (AlCl4 -, AlBr4 -, AlI4 -, Til4 - , Os16O4 , and Os18O4).
B. B. Srivastava   +3 more
openaire   +1 more source

Intramolecular force mapping at room temperature using Non-Contact Atomic Force Microscopy [PDF]

open access: yes, 2023
Scanning Probe Microscopy (SPM) methods allow for investigations on the molecular and atomistic scale in real space. While Scanning Tunneling Microscopy (STM) images the electronic structure of a molecular sample, its chemical structure can be resolved ...
Brown, Timothy James
core  

Visualizing Intramolecular Dynamics of Membrane Proteins [PDF]

open access: yes, 2022
Membrane proteins play important roles in biological functions, with accompanying allosteric structure changes. Understanding intramolecular dynamics helps elucidate catalytic mechanisms and develop new drugs.
Inamasu, Rena   +31 more
core   +1 more source

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