Results 31 to 40 of about 940,670 (332)

Semiquantal analysis of hydrogen bond [PDF]

open access: yesThe Journal of Chemical Physics, 2006
The semiquantal time-dependent Hartree (SQTDH) theory is applied to the coupled Morse and modified Lippincott-Schroeder (LS) model potentials of hydrogen bond. The structural correlation between the heavy atoms distance and the proton position, the geometric isotope effect, the energy of hydrogen bond formation, and the proton vibrational frequency ...
openaire   +2 more sources

Analysis of bonded elastic blocks

open access: yesMathematical and Computer Modelling, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Banks, H. T., Pinter, G. A., Yeoh, O. H.
openaire   +2 more sources

Bond Bundle Analysis of Ketosteroid Isomerase

open access: yesThe Journal of Physical Chemistry B, 2022
Bond bundle analysis is used to investigate enzymatic catalysis in the ketosteroid isomerase (KSI) active site. We identify the unique bonding regions in five KSI systems, including those exposed to applied oriented electric fields and those with amino acid mutations, and calculate the precise redistribution of electron density that accompanies either ...
Timothy R. Wilson   +3 more
openaire   +4 more sources

Dispersion-mediated steering of organic adsorbates on a precovered silicon surface

open access: yesBeilstein Journal of Organic Chemistry, 2018
The chemistry of organic adsorbates on surfaces is often discussed in terms of Pauli repulsion as limiting factor regarding the packing of molecules. Here we show that the attractive part of the van der Waals potential can be similarly decisive.
Lisa Pecher   +2 more
doaj   +1 more source

Experimental and Theoretical Evidence for Nitrogen-Fluorine Halogen Bonding in Silver-Initiated Radical Fluorinations [PDF]

open access: yes, 2019
We report experimental and computational evidence for nitrogen–fluorine halogen bonding in Ag­(I)-initiated radical C–H fluorinations. Simple pyridines form [N–F–N]+ halogen bonds with Selectfluor to facilitate single-electron reduction by catalytic Ag ...
Baker, Sarah I   +4 more
core   +5 more sources

Viscoelastic Analysis of Adhesively Bonded Joints [PDF]

open access: yesJournal of Applied Mechanics, 1981
In this paper an adhesively bonded lap joint is analyzed by assuming that the adherends are elastic and the adhesive is linearly viscoelastic. After formulating the general problem a specific example for two identical adherends bonded through a three parameter viscoelastic solid adhesive is considered.
Delale, F., Erdogan, F.
openaire   +1 more source

A numerical study on thermal bonding with preheating technique for polypropylene microfluidic device

open access: yese-Polymers, 2023
This study presents a method for producing microfluidic chips from polypropylene using a pre-heated bonding area and thermal bonding technology. ANSYS was utilized to investigate the effects of bonding parameters and microchannel deformation and predict ...
Almezgagi Esam Abdulrahman   +3 more
doaj   +1 more source

Local Spin Analysis and Chemical Bonding

open access: yesChemistry – A European Journal, 2013
AbstractThe electronic structure of main‐group diatomic molecules is discussed in the light of local spin analysis. A deep investigation into the origin of local spins and their coupling is presented. It is shown that the presence of significant local spins in bonded molecules flags deviations from the classical bonding prototypes.
Ramos-Cordoba Eloy   +2 more
openaire   +3 more sources

Direct estimate of the internal π-donation to the carbene centre within N-heterocyclic carbenes and related molecules

open access: yesBeilstein Journal of Organic Chemistry, 2015
Fifteen cyclic and acylic carbenes have been calculated with density functional theory at the BP86/def2-TZVPP level. The strength of the internal X→p(π) π-donation of heteroatoms and carbon which are bonded to the C(II) atom is estimated with the help of
Diego M. Andrada   +3 more
doaj   +1 more source

Effect of surface cleaning on interface bonding performance for 316H stainless steel joints manufactured by additive forging

open access: yesMaterials & Design, 2021
Additive forging is a newly developed method to manufacture heavy forgings by using multilayer hot-compression bonding. However, the relationship between surface cleaning and bonding performance of bonded samples in the additive forging process is ...
Yong Zhao   +8 more
doaj   +1 more source

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