نتایج جستجو برای: pore diameter

تعداد نتایج: 149493  

Journal: :The Journal of biological chemistry 2004
Thomas Voets Annelies Janssens Guy Droogmans Bernd Nilius

The TRP superfamily forms a functionally important class of cation channels related to the product of the Drosophila trp gene. TRP channels display an unusual diversity in activation mechanisms and permeation properties, but the basis of this diversity is unknown, as the structure of these channels has not been studied in detail. To obtain insight in the pore architecture of TRPV6, a Ca(2+)-sel...

Journal: :Journal of the Ceramic Society of Japan 1995

Journal: :Zeitschrift der Japanischen Mikrobiologische Gesellschaft 1944

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2005
Christoph H Arns Mark A Knackstedt Nicos S Martys

We computationally investigate cross-property correlations linking fluid permeability to conductive properties in sedimentary rock for a number of pore size parameters based on three-dimensional digitized rock images. In particular, we focus on correlations based on the pore volume-to-surface-area ratio (V(p)/S), a critical channel diameter (c) associated with mercury porosimetry measurements, ...

Journal: :Nano letters 2005
Martin Steinhart Sven Zimmermann Petra Göring Andreas K Schaper Ulrich Gösele Christoph Weder Joachim H Wendorff

Aligned liquid crystalline nanowires within ordered porous alumina templates show a pronounced texture on a macroscopic scale. We have investigated the influence of the geometric confinement and the nature of the pore walls on the mesophase formation by means of X-ray diffraction. The apparent texture is the result of a complex interplay of the pore geometry, interfacial phenomena, and the ther...

2013
Uwe J. Jürgens Roland Benz

Cell walls of the unicellular cyanobacterium Synechocystis sp. PCC 6714, isolated from cell homogenates, were found to be unusually resistant against extraction with various detergents, organic solvents, chaotropic agents, and proteases. The major outer membrane proteins (Mr 67,000; 61,000; 94,000) were solubilized by differential SDS-extraction and purified by prepara­ tive SDS-PAGE. The extra...

A. Tadjarodi, R. Zare-Dorabei V. Jalalat

In this work, BSEA-SBA-15 was prepared for the first time, which was prepared by covalently anchoring Schiff-base compound (N,N´-bis(salicylidene)ethylenediamine (BSEA) on SBA-15 by hydrothermal method. The structure and physicochemical properties were determined by elemental analysis, XRD, nitrogen adsorption–desorption, thermogravimetric analysis and FTIR spectroscopy, SEM, BET surface area a...

2013
V. Sadasivan C. P. Richter P. F. Williams

Porous alumina templates are fabricated by anodization of Al in an acid. The characteristics of the template, such as the pore diameter, interpore separation, and the periodicity of the porous structure depend on the conditions of anodization and the acid that is used as electrolyte. The variation of pore diameter and interpore separation as a function of anodization parameters are described. T...

Journal: :Journal of medical and dental sciences 2008
Akio Tsuchiya Shinichi Sotome Yoshinori Asou Masanori Kikuchi Yoshihisa Koyama Tetsuro Ogawa Junzo Tanaka Kenichi Shinomiya

A porous hydroxyapatite/collagen composite (HAp/Col) was developed that consists of hydroxyapatite nanocrystals and atelocollagen. In this study, cylindrical (diameter: 5 mm, height: 3 mm) porous HAp/Col implants with different pore sizes (diameter: 160 or 290 microm) were prepared, and the influences of pore size and implanted volume were evaluated using a rabbit bone defect model. In the impl...

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