Results 21 to 30 of about 4,757,335 (242)

Cube-based diffusion algorithm [PDF]

open access: yes, 2007
We study molecular diffusion in (linear) nanopores with different types of roughness in the so-called Knudsen regime. Knudsen diffusion represents the limiting case of molecular diffusion in pores, where mutual encounters of the molecules within the free
Kärger, Jörg   +3 more
core   +1 more source

Fabrication of Modified Random Phase Masks with Phase Modulation Elements Exhibiting Gaussian Profiles Using Molecular Migration under Photopolymerization

open access: yesPhotonics, 2019
Random phase masks are important technical elements for realizing holographic memory systems that enable high density recording. However, the broadly distributed Fourier spectrum often presents a problem because wide recording spots result in reduced ...
Akira Emoto   +4 more
doaj   +1 more source

Diffusion of light gases in 6FDA/BPDA-DAM Carbon Molecular Sieve membranes by Pulsed Field Gradient NMR [PDF]

open access: yes, 2013
In this paper, we demonstrate the potential of pulsed field gradient (PFG) NMR spectroscopy to reveal detailed knowledge of self-diffusion of light gases and light gas mixtures in carbon molecular sieve membranes on small length scales.
Mueller, Robert   +4 more
core   +1 more source

The benefit of microscopic measuring techniques for unveiling structure-mobility relations in molecular diffusion under confinement [PDF]

open access: yes, 2005
Molecular propagation under confinement reveals a multitude of peculiarities in comparison with diffusion in the bulk phase of a fluid. The present review is based on the experimental evidence of microscopic measuring techniques on tracing such phenomena.
Kärger, Jörg
core   +1 more source

Correlating self- and transport diffusion in the Knudsen regime [PDF]

open access: yes, 2005
Comparing the rates of molecular diffusion in porous materials under different regimes of measurement may provide valuable information about the underlying mechanisms.
Kärger, Jörg   +3 more
core   +1 more source

Cyclic CH4 Injection for Enhanced Oil Recovery in the Eagle Ford Shale Reservoirs

open access: yesEnergies, 2018
Gas injection is one of the most effective enhanced oil recovery methods for the unconventional reservoirs. Recently, CH4 has been widely used; however, few studies exist to accurately evaluate the cyclic CH4 injection considering molecular diffusion and
Yuan Zhang   +3 more
doaj   +1 more source

Anomalous diffusion induced by cristae geometry in the inner mitochondrial membrane [PDF]

open access: yes, 2009
Diffusion of inner membrane proteins is a prerequisite for correct functionality of mitochondria. The complicated structure of tubular, vesicular or flat cristae and their small connections to the inner boundary membrane impose constraints on the ...
Jürgen Bereiter-Hahn   +6 more
core   +2 more sources

Simulation of structure of special tilt boundary and grainboundary self-diffusion in Ti [PDF]

open access: yes, 2022
Symmetric tilt boundary [2 110] (01 12) in HCP titanium has been investigated by computer simulation methods using the embedded atom potential. The structure and energies of the considered boundary and the energies of formation of vacancies in it have ...
Urazaliev, Mihail   +2 more
core   +1 more source

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo   +5 more
wiley   +1 more source

On the measurement of surface diffusivity in disordered nanoporous carbon via molecular dynamics simulations [PDF]

open access: yes, 2011
Gas diffusion in nanoporous carbon includes distinct diffusion modes: surface diffusion on the pore walls and non-surface diffusion away from pore walls.
Mi, Xi, Shi, Yunfeng
core   +1 more source

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