نتایج جستجو برای: mechanical permeability
تعداد نتایج: 284362 فیلتر نتایج به سال:
Abstract The mechanical behavior and the influence of compaction banding on hydraulic properties in soft porous rocks were studied. tested rock was Calcarenite Tuffeau de Maastricht. In frame experimental investigations, triaxial oedometric tests conducted under dry drained conditions. results demonstrated that is forming discrete bands high confining stresses steep angle shear low stresses. Pe...
Male albino rabbits were subjected to a single mechanical dilatation of the descending thoracic aorta with a balloon catheter. The animals were killed 3, 6, 14, 30, and 60 days later. Between the sixth and the fourteenth days after injury, all the aortas which had been dilated developed severe, gross arteriosclerosis. Microscopic examination showed destruction and degeneration in the form of ne...
The structural transformation of substituted hexagonal ferrite powders BaFetoCoTiO~s prepared by mechanical milling, was investigated as a fimction of grinding time by means of MOssbauer spectrometry and static magnetic measurements. A spin reorientation is clearly evidenced from the temperature dependence of the hyperfine parameters and of the initial magnetic permeability on the powder mechan...
The formation of a rich underground-seam network is the key problem in development low-permeability hot dry rock (HDR) resources. Considering lack macroscopic continuum theory to study hydraulic fracturing having preset fracture-interface element, particle-flow method micro-mechanical discrete-element introduced simulate mechanical behavior for HDR low permeability reservoirs. reservoir simulat...
در سالیان اخیر نانو تکنولوژی موجب تحولات شگرفی در جهان گردیده و محققین علوم مختلف از آن بهره گرفته اند. نانو ذرات به دلیل دارا بودن ویژگی های خاص فیزیکی و شیمیایی در بسیاری زمینه ها جهت ساخت مواد جدید با قابلیت های منحصر به فرد به کار می روند. به همین جهت، استفاده از نانو سیلیس به عنوان یک ماده افزودنی محصول فناوری نانو در بتن مورد توجه قرار گرفته است. در این حال پیشرفت های اخیر در زمینه تکنولو...
Abstract Enhanced geothermal systems (EGS) offer the potential for a much larger energy source than conventional hydrothermal systems. Hot, low-permeability rocks are prevalent at depth around world, but challenge of extracting thermal depends on ability to create and sustain open fracture networks. Laboratory experiments were conducted using suite selected rock cores (granite, metasediment, rh...
Soft Tissue Engineering In article number 2215220, Scott J. Hollister, Michael E. Davis, and co-workers report, 3D printing of a novel architected auxetic with enhanced mechanical biological performance. Specifically, the printed auxetics have high flexibility, permeability, nonlinear deformation behavior as demonstrated through computational, mechanical, analysis. These characteristics provide...
This study examines the effect of different patterns on aesthetic properties, air permeability characteristics and mechanical performance woven fabrics constructed with 100% cotton ring spun yarns. Weaving process were proceeded by using 28/2 Ne combed warp 32/2 carded weft yarns identical manufacturing parameters. Fabrics 5 dissimilar obtained measurements done for each pattern type. Average y...
While DNA origami is a popular and versatile platform, its structural properties are still poorly understood. In this study we use solid-state nanopores to investigate the ionic permeability and mechanical properties of DNA origami nanoplates. DNA origami nanoplates of various designs are docked onto solid-state nanopores where we subsequently measure their ionic conductance. The ionic permeabi...
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