Results 51 to 60 of about 586,973 (295)

An experimental determination of the critical diffusion coefficient and critical relative humidity (RH) of drying air when optimizing the drying of three hardwood species (birch, aspen, and black alder)

open access: yesMetsanduslikud Uurimused
There are no systematic approaches available in current specialist literature when it comes to the optimization of the process of drying out hardwood species of wood, such as birch, aspen, or black alder, all of which find industrial uses in Estonia.
Tamme Hannes   +3 more
doaj   +1 more source

Effect of gas pressure and particle size on dynamic diffusion-adsorption characteristics of CO2 in coal

open access: yes矿业科学学报
This study investigates the influence mechanism of particle size and gas pressure on the dynamic diffusion law of CO2 in coal.We used a self-developed high pressure adsorption and desorption experimental system for coal seam to analyze the dynamic ...
ZHANG Zunguo   +3 more
doaj   +1 more source

Transport and fluctuation-dissipation relations in asymptotic and pre-asymptotic diffusion across channels with variable section

open access: yes, 2014
We study the asymptotic and pre-asymptotic diffusive properties of Brownian particles in channels whose section varies periodically in space. The effective diffusion coefficient $D_{\mathrm{eff}}$ is numerically determined by the asymptotic behavior of ...
Cecconi, Fabio   +2 more
core   +1 more source

Post‐COVID Fatigue Is Associated With Reduced Cortical Thickness After Hospitalization

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neuropsychiatric symptoms are among the most prevalent sequelae of COVID‐19, particularly among hospitalized patients. Recent research has identified volumetric brain changes associated with COVID‐19. However, it currently remains poorly understood how brain changes relate to post‐COVID fatigue and cognitive deficits.
Tim J. Hartung   +190 more
wiley   +1 more source

Estimation of Effective Diffusion Coefficient of O2 in Ash Layer in Underground Coal Gasification by Thermogravimetric Apparatus

open access: yesEnergies, 2018
Underground coal gasification (UCG) proceeds generally in the presence of an ash layer on coal (or char) surface. The ash layer increases the mass transfer resistance of O2 to the gasification surface, which may become the limiting step of whole process.
Xi Lin, Qingya Liu, Zhenyu Liu
doaj   +1 more source

Short-time rotational diffusion in monodisperse charge-stabilized colloidal suspensions

open access: yes, 1996
We investigate the combined effects of electrostatic interactions and hydrodynamic interactions on the short-time rotational self-diffusion coefficient in charge-stabilized suspensions.
Berne   +14 more
core   +1 more source

Age‐Related Characteristics of SYT1‐Associated Neurodevelopmental Disorder

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives We describe the clinical manifestations and developmental abilities of individuals with SYT1‐associated neurodevelopmental disorder (Baker‐Gordon syndrome) from infancy to adulthood. We further describe the neuroradiological and electrophysiological characteristics of the condition at different ages, and explore the associations ...
Sam G. Norwitz   +3 more
wiley   +1 more source

Impact of Pore Geometry and Water Saturation on Gas Effective Diffusion Coefficient in Soil

open access: yesApplied Sciences, 2018
Gas flow in soil plays a crucial role in terrestrial ecosystems, and numerical simulation of their movement needs to know their effective diffusion coefficients.
Wulong Hu   +5 more
doaj   +1 more source

Regulation of nuclear NF-κB oscillation by a diffusion coefficient and its biological implications. [PDF]

open access: yesPLoS ONE, 2014
The transcription factor NF-κB shuttles between the cytoplasm and the nucleus, and nuclear NF-κB is known to oscillate with a cycle of 1.5-2.5 h following the application of external stimuli.
Daisuke Ohshima, Kazuhisa Ichikawa
doaj   +1 more source

Influence of chemical driving forces in ion mixing of metallic bilayers [PDF]

open access: yes, 1984
The effective interdiffusion coefficient of metallic bilayers under ion irradiation has been correlated with the heat of mixing of corresponding binary alloys.
Cheng, Y-T.   +3 more
core   +1 more source

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