نتایج جستجو برای: micro pore

تعداد نتایج: 154037  

Journal: :Applied and environmental microbiology 2003
Christine Beardsley Jakob Pernthaler Werner Wosniok Rudolf Amann

We studied the growth of six culturable bacterial lineages from coastal North Sea picoplankton in environmental samples under different incubation conditions. The grazing pressure of heterotrophic nanoflagellates (HNF) was reduced either by double prefiltration through 0.8- micro m-pore-size filters or by 10-fold dilutions with 0.2- micro m (pore-size) prefiltered seawater. We hypothesized that...

Journal: :Physical chemistry chemical physics : PCCP 2007
Artur P Terzyk Sylwester Furmaniak Peter J F Harris Piotr A Gauden Jerzy Włoch Piotr Kowalczyk Gerhard Rychlicki

A plausible model for the structure of non-graphitizing carbon is one which consists of curved, fullerene-like fragments grouped together in a random arrangement. Although this model was proposed several years ago, there have been no attempts to calculate the properties of such a structure. Here, we determine the density, pore size distribution and adsorption properties of a model porous carbon...

2012
Claudio Madonna Bjarne S. G. Almqvist Erik H. Saenger

S U M M A R Y Digital rock physics combines modern microscopic imaging with advanced numerical simulations to analyse the physical properties of rocks. Elastic-wave propagation modelling based on the microstructure images is used to estimate the effective elastic properties of the rock. The goal of this paper is to describe and understand how laboratory experiments compare with digital rock phy...

Journal: :Fractal and fractional 2022

Cyclic loading always results in great damage to the pore structure and fractal characteristics of soft soil. Scanning electron microscope (SEM) can help collect data describe microstructure This paper conducted a series SEM tests interpret effect consolidation confining pressure, circulating dynamic stress ratios overconsolidation ratio on soil’s micro-pore characteristics. The demonstrate tha...

2015
Juhua Li

Microscopic structures of porous media are mainly reconstructed using physical experimental methods and numerical reconstruction methods. However, their accuracy is closely related to the resolution of real rock core images and polishing techniques of core chips amongst others, which significantly limit the development of micro-network flow simulation. In this paper, we proposed a new method fo...

Journal: :Journal of Renewable Materials 2022

Herein, micro iron ore tailings (micro-IOTs) were prepared by wet-grinding and applied to improve sulphoaluminate cement (SAC) performance. The physicochemical properties of micro-IOTs investigated particle size analysis, XRD, XPS. hydrates trait the hydration mechanism micro-IOTs-SAC composite studied TGA, MIP, SEM. results demonstrated that with an average grain diameter 517 nm could be obtai...

Journal: :Journal of the Korean Geotechnical Society 2011

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