Results 91 to 100 of about 30,941 (214)

The Gibbs Paradox: Early History and Solutions

open access: yesEntropy, 2018
This article is a detailed history of the Gibbs paradox, with philosophical morals. It purports to explain the origins of the paradox, to describe and criticize solutions of the paradox from the early times to the present, to use the history of ...
Olivier Darrigol
doaj   +1 more source

Impact of virtual chemistry laboratory instruction on pre-service science teachers’ scientific process skills

open access: yesSHS Web of Conferences, 2016
This study aimed to investigate the impact of virtual chemistry laboratory instruction on pre-service science teachers’ scientific process skills.
Mutlu Ayfer, Şeşen Burçin Acar
doaj   +1 more source

An investigation of equilibrium concepts [PDF]

open access: yes
A different approach to modeling of the thermochemistry of rocket engine combustion phenomena is presented. The methodology described is based on the hypothesis of a new variational principle applicable to compressible fluid mechanics. This hypothesis is
Prozan, R. J.
core   +1 more source

Structure and thermochemistry of K$_2$Rb, KRb$_2$ and K$_2$Rb$_2$

open access: yes, 2010
The formation and interaction of ultracold polar molecules is a topic of active research. Understanding possible reaction paths and molecular combinations requires accurate studies of the fragment and product energetics.
Byrd, Jason N.   +2 more
core   +1 more source

Global Simulations of Protoplanetary Disk Outflows with Coupled Non-ideal Magnetohydrodynamics and Consistent Thermochemistry

open access: yes, 2018
Magnetized winds may be important in dispersing protoplanetary disks and influencing planet formation. We carry out global full magnetohydrodynamic simulations in axisymmetry, coupled with ray-tracing radiative transfer, consistent thermochemistry, and ...
Bai, Xue-Ning   +2 more
core   +1 more source

Thermochemical equilibrium calculations of high-temperature O2 generation on the early Earth: Giant asteroid impacts on land [PDF]

open access: yesJournal of the Serbian Chemical Society, 2003
Earth’s atmosphere is composed primarily of N2 and O2. The origin of free O2 in the early Earth’s atmosphere is still subject of considerable debate.1 Theoretical models suggest that the initial form of free O2 in the atmosphere has been oceanic H2O ...
PAVLE I. PREMOVIC
doaj  

A gyökfogó dokozahexaénsav mint agyvédő = Docosahexaenoic acid (DHA) as a free radical scavenger brain protector [PDF]

open access: yes, 2007
Telítetlen zsírsavak (PUFA) fontos szerepet játszanak mint antioxidánsok az emberi testben, különös tekintettel az agyban. Lipidek szisztematikus számítási vizsgálatait az OTKA támogatás előtt már elkezdtük. A támogatás alatt 4 fő tématerületen értünk el
Csizmadia, G. Imre   +2 more
core  

Assessment of the TCA functional in computational chemistry and solid-state physics

open access: yes, 2015
We assess the Tognetti-Cortona-Adamo (TCA) generalized gradient approximation correlation functional [J. Chem. Phys. 128:034101 (2008)] for a variety of electronic systems.
Constantin, L. A.   +4 more
core   +3 more sources

Thermal Management Approach to Stabilization of Disordered Active Sites for Sabatier Reaction

open access: yesAdvanced Science
The transition metal nanocatalysts containing disordered active sites can potentially achieve efficient Sabatier reactions with high selectivity. However, it remains a challenge to maintain the stability of these active sites in such an exothermic ...
Delong Duan   +8 more
doaj   +1 more source

Bridging the gap between high-level quantum chemical methods and deep learning models

open access: yesMachine Learning: Science and Technology
Supervised deep learning (DL) models are becoming ubiquitous in computational chemistry because they can efficiently learn complex input-output relationships and predict chemical properties at a cost significantly lower than methods based on quantum ...
Viki Kumar Prasad   +2 more
doaj   +1 more source

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