Results 21 to 30 of about 6,096,891 (335)

Dimensional crossover of the exchange-correlation energy at the semilocal level [PDF]

open access: yes, 2008
Commonly used semilocal density functional approximations for the exchange-correlation energy fail badly when the true two dimensional limit is approached.
E. Fermi   +4 more
core   +1 more source

Numerical Simulation of Conjugate Heat Exchange at Gas Flowing in a Well [PDF]

open access: yesMATEC Web of Conferences, 2021
A mathematical model is offered for conjugate heat exchange when gas flows in the section of a vertical well. The motion of the medium is described using a two-dimensional axisymmetric stationary formulation based on boundary-layer equations.
Al’es Michael   +2 more
doaj   +1 more source

Pulsed extraction of ionization from helium buffer gas [PDF]

open access: yes, 2008
The migration of intense ionization created in helium buffer gas under the influence of applied electric fields is considered. First the chemical evolution of the ionization created by fast heavy-ion beams is described.
Beaty   +34 more
core   +1 more source

Analysis of Vaneless Diffuser Stall Instability in a Centrifugal Compressor

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2017
Numerical simulations based on the large eddy simulation approach were conducted with the aim to explore vaneless diffuser rotating stall instability in a centrifugal compressor.
Elias Sundström   +4 more
doaj   +1 more source

Photosynthetic parameters and stomatal conductance in attached and detached balsam fir foliage

open access: yesPlant-Environment Interactions, 2021
Leaf level gas‐exchange measurements can be made on detached foliage to address the challenge of access to the crown of tall trees. However, detachment may impact leaf gas exchange.
Matthew E. Akalusi   +2 more
doaj   +1 more source

Hartree-Fock theory of a current-carrying electron gas [PDF]

open access: yes, 2006
State-of-the-art simulation tools for nonequilibrium quantum transport systems typically take the current-carrier occupations to be described in terms of equilibrium distribution functions characterized by two different electrochemical potentials, while ...
H. Haug   +5 more
core   +2 more sources

Surface oxygen exchange properties of bismuth oxide-based solid electrolytes and electrode materials [PDF]

open access: yes, 1989
The surface oxygen exchange coefficient, ks, has been measured for the solid solution (Bi2O3)0.75(Er2O3)0.25 and (Bi2O3)0.6(Tb2O3)0.4 (abbreviated BE25 and BT40), using gas-phase 18O exchange techniques.
Boukamp, B.A.   +3 more
core   +3 more sources

Extracorporeal Gas Exchange

open access: yesCritical Care Clinics, 2018
Extracorporeal gas exchange is increasingly used for various indications. Among these are refractory acute respiratory failure, including the acute respiratory distress syndrome (ARDS), and the avoidance of ventilator-induced lung injury (VILI) by enabling lung-protective ventilation.
Moerer, Onnen   +6 more
openaire   +3 more sources

Simple model of the static exchange-correlation kernel of a uniform electron gas with long-range electron-electron interaction [PDF]

open access: yes, 2005
A simple approximate expression in real and reciprocal spaces is given for the static exchange-correlation kernel of a uniform electron gas interacting with the long-range part only of the Coulomb interaction.
A. Holas   +14 more
core   +3 more sources

The influence of stomatal morphology and distribution on photosynthetic gas exchange

open access: yesThe Plant Journal, 2019
Summary The intricate and interconnecting reactions of C3 photosynthesis are often limited by one of two fundamental processes: the conversion of solar energy into chemical energy, or the diffusion of CO2 from the atmosphere through the stomata, and ...
E. L. Harrison   +3 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy