Results 31 to 40 of about 1,731,917 (295)

QUANTUM-THEORY OF DIFFUSION - TEMPERATURE DEPENDENCE OF DIFFUSION OF LIGHT INTERSTITIALS IN DEBYE SOLIDS [PDF]

open access: yes, 2002
The temperature dependence of the motion of light interstitials is calculated using the quantum theory of Flynn and Stoneham (1970). The results are compared with the asymptotic expressions given previously. They show that the high temperature asymptotic
STONEHAM, AM
core   +1 more source

Effects of Grain Size on the Diffusion Activation Energy and Melting Point

open access: yesChemical Engineering Transactions, 2017
A thermodynamic method based on bonding energy and surface thermodynamics was developed to accurately investigate the diffusion activation energy and melting point of metallic nanomaterials.
Mingchu Huang   +4 more
doaj   +1 more source

VARIABLE ACTIVATION ENERGY PRINCIPLE TO MODEL OIL SHALE PYROLYSIS KINETICS; pp. 181–194 [PDF]

open access: yesOil Shale, 2017
The oil shale (OS) sample from Sultani mine, southern Jordan, was subjected to thermogravimetric/differential thermogravimetric (TG/DTG) and differential scanning calorimetry (DSC) analysis.
OMAR SALIM AL-AYED   +2 more
doaj   +1 more source

Overturn of ilmenite‐bearing cumulates in a rheologically weak lunar mantle [PDF]

open access: yes, 2019
©2019. American Geophysical UnionThe crystallization of the lunar magma ocean (LMO) determines the initial structure of the solid Moon. Near the end of the LMO crystallization, ilmenite‐bearing cumulates (IBC) form beneath the plagioclase crust.
Breuer, Doris   +5 more
core   +2 more sources

Dataset of the liquid water distribution in a biomimetic PEM fuel cell

open access: yesData in Brief
This dataset gathers the initial formation and the evolution of water content and distribution, as well as water evacuation, within a lung-inspired PEM (proton exchange membrane) fuel cell with a 50 cm2 active area for various operating conditions such ...
Alfredo Iranzo   +5 more
doaj   +1 more source

Experimental Research of Drying Characteristic of Red Banana in a Single Slope Direct Solar Dryer Based on Natural and Forced Convection

open access: yesFood Technology and Biotechnology, 2021
Research background. Traditionally, open sun drying method serves to dry the products for long time preservation. Solar drying is also employed to minimise the drying time to achieve the required moisture content.
Elavarasan Elangovan   +1 more
doaj  

The Bond-Energy Bond-Order (BEBO) Model of Chemisorption [PDF]

open access: yes, 1973
The bond-energy bond-order (BEBO) model of chemisorption allows an estimate to be made of the interaction energy between a gaseous specie and a solid surface as a function of either bond length or bond order, i.e., the length or order of either the gas ...
Weinberg, W. H.
core   +1 more source

ACTIVATION ENERGY FOR FISSION [PDF]

open access: yes, 1952
The experimentally determined exponential dependence of spontaneous fission rate on Z{sup 2}/A has been used to derive an expression for the dependence of the fission activation energy on Z{sup 2}/A. This expression has been used to calculate the activation energy for slow neutron induced fission and photofission.
openaire   +3 more sources

Deep Learning of Activation Energies [PDF]

open access: yesThe Journal of Physical Chemistry Letters, 2020
Quantitative prediction of reaction properties, such as activation energy, have been limited due to a lack of available training data. Such predictions would be useful for computer-assisted reaction mechanism generation and organic synthesis planning. We develop a template-free deep learning model to predict activation energy given reactant and product
Colin A. Grambow   +2 more
openaire   +4 more sources

How an Anode‐Sided Gap Influences the Electrooxidation of Phenols in Flow Reactors

open access: yesChemElectroChem
Electroorganic synthesis offers a sustainable way to valorize chemical building blocks through renewable energy and environmentally friendly reagents.
Jonas Wolf   +6 more
doaj   +1 more source

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