نتایج جستجو برای: glass bead pack
تعداد نتایج: 96558 فیلتر نتایج به سال:
Multifunctional materials facilitate lightweight and slender structural solutions for numerous applications. In transportation, construction that can act as a battery, store electrical energy, will contribute to realization of highly energy efficient vehicles aircraft. Herein, multicell battery composite laminate, with three state-of-the-art cells connected in series is demonstrated. The experi...
Ethidium bromide (EtBr) is the conventional intercalator for visualizing DNA. Previous studies suggested that EtBr lengthens and unwinds double-stranded DNA (dsDNA). However, no one has observed the unwinding of a single dsDNA molecule during intercalation. We developed a simple method to observe the twisting motions of a single dsDNA molecule under an optical microscope. A short dsDNA was atta...
The topological structure resulting from the network of contacts between grains (contact network) is studied for large samples of monosized spheres with densities (fraction of volume occupied by the spheres) ranging from 0.59 to 0.64. We retrieve the coordinates of each bead in the pack and we calculate the average coordination number by using three different methods. We show that, in the range...
After 15 min incubations, binding of 0.8-, 6-, and 16ym fibronectin-coated latex beads occurred primarily at the margins of chick embryo tibroblasts that previously were attached and spread on tibronectin-coated glass coverslips. Extensive phagocytosis of the smallest beads and some phagocytosis of the larger beads occurred within 2 h. Following binding of the 16-urn beads, there were no change...
We present a methodology to characterize a continuum-scale model of transport in porousmedia on the basis of pore-scale distributions of velocities computed in three-dimensional pore-space images. The methodology is tested against pore-scale simulations of flow and transport for a bead pack and a sandstone sample. We employ a double-continuum approach to describe transport inmobile and immobile...
We study experimentally how wettability impacts fluid–fluid displacement patterns in granular media. We inject a low-viscosity fluid (air) into a thin bed of glass beads initially saturated with a more-viscous fluid (a water/glycerol mixture). Chemical treatment of glass surfaces allows us to control the wetting properties of the medium and modify the contact angle θ from 5 deg (drainage) to 12...
Convective assembly at high volume fraction was used for the rapid deposition of uniform, close-packed coatings of Saccharomyces cerevisiae yeast cells onto glass slides. A computational model was developed to calculate the thickness profiles of such coatings for different set of conditions. Both the experiments and the numerical simulations demonstrated that the deposition process is strongly ...
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