Results 21 to 30 of about 912,769 (306)

Microstructural properties of non-supported microporous ceramic membrane top-layers obtained by the sol-gel process [PDF]

open access: yes, 1996
Dried and calcined non-supported membrane top-layers of SiO2, SiO2/TiO2, SiO2/ZrO2 (10, 20 and 30 mol% TiO2 and ZrO2, respectively) and SiO2/Al2O3 (10 mol% AlO1.5) were prepared using acid catalyzed hydrolysis and condensation of alkoxides in ethanol ...
Burggraaf, A.J.   +3 more
core   +2 more sources

Improving osteoinduction and osteogenesis of Ti6Al4V alloy porous scaffold by regulating the pore structure

open access: yesFrontiers in Chemistry, 2023
Titanium alloy scaffolds with a porous structure have attracted much attention in bone defect repair. However, which pore structure is more beneficial to bone defect repair is controversial.
Chao Wang   +19 more
doaj   +1 more source

Pore size estimation from double diffusion encoding

open access: yesCurrent Directions in Biomedical Engineering, 2017
Double diffusion encoding is a magnetic resonance technique with applications in measuring microstructure. In many tissues, cell size (which is of a few micrometers) is an important biological parameter.
Methot Vincent   +2 more
doaj   +1 more source

Preparation of controlled porosity carbon aerogels for energy storage in rechargeable lithium oxygen batteries [PDF]

open access: yes, 2009
Porous carbon aerogels are prepared by polycondensation of resorcinol and formaldehyde catalyzed by sodium carbonate followed by carbonization of the resultant aerogels in an inert atmosphere. Pore structure of carbon aerogels is adjusted by changing the
EPSRC (Funder)   +2 more
core   +1 more source

Fabrication and capillary performance of bi-porous Ti3AlC2 wicks with controllable pore size proportion using dissolvable pore formers

open access: yesJournal of Materials Research and Technology, 2021
Bi-porous Ti3AlC2 wicks with the controllable pore structure were fabricated with the dissolvable pore former NaCl and cold pressure in this work. The bi-porous structure consisted of fine gap pores (
Yingwen Cao   +3 more
doaj   +1 more source

Yield stress fluids method to determine the pore size distribution of a porous medium [PDF]

open access: yes, 2014
In this paper a new method is presented in order to determine the pore size distribution in a porous medium. This original technique uses the rheological properties of some non-Newtonian yield stress fluids flowing through the porous sample.
AMBARI, Abdelhak   +2 more
core   +6 more sources

Energy distribution function based universal adsorption isotherm model for all types of isotherm [PDF]

open access: yes, 2018
Based upon the adsorbate-adsorbent interactions due to pore size distribution and surface heterogeneity, as characterized by the adsorption isotherms, the adsorption phenomenon has many industrial and environmental applications.
Burhan, Muhammad   +2 more
core   +2 more sources

Designing Nonwovens to Meet Pore Size Specifications [PDF]

open access: yesJournal of Engineered Fibers and Fabrics, 2007
New nonwovens applications in areas such as filtration require a media designed to particular pore size specifications in the 3 to 20 micron range. The purpose of this work was to develop a basis by which to design and construct a fabric with given pore ...
Glen E. Simmonds   +2 more
doaj  

Combining nuclear magnetic resonance and rate-controlled porosimetry to probe the pore-throat structure of tight sandstones

open access: yesPetroleum Exploration and Development, 2016
Rate-controlled porosimetry (RCP), nuclear magnetic resonance (NMR) and micro CT tests were conducted on five tight sandstone samples, the results were compared to reveal the limitations of RCP in determining the pore size distribution (PSD) and pore to ...
Dianshi XIAO   +4 more
doaj   +1 more source

Improved Pore-Size Analysis of Carbonaceous Adsorbents

open access: yesAdsorption Science & Technology, 2002
An improvement was proposed for the pore-size analysis of active carbons based on low-temperature (77 K) nitrogen adsorption isotherms measured over a wide range of relative pressures (5 × 10 −7 –0.995). It was shown that the applicability of the Barrett,
J. Choma, M. Jaroniec, M. Kloske
doaj   +1 more source

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