Microscopic fracture characterization and permeability evolutionary patterns of granites under cyclic thermal shock [PDF]
ObjectiveThis study aims to reveal the microscopic damage characteristics and permeability evolutionary patterns of high-temperature granite reservoirs fractured under cyclic thermal shock produced by low-temperature fluids like drilling fluids and ...
Chengcheng REN +5 more
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Micro-CT analysis of high temperature creep damage of 2D C/SiC composites [PDF]
, 2011 利用显微CT针对自愈合2dC/SIC复合材料高温蠕变试验前后的内部孔隙率进行了分。析结果表明,显微CT技术能较好地探测高温蠕变前后2dC/SIC复合材料内部孔隙率变化,从孔隙率的变化初步证实了bXC组元对2dC/SIC复合材料有一定的自愈合作用。利用显微CT技术证实了高温下的拉伸应力不会导致2dC/SIC复合材料中新的裂纹产生。We report a micro-CT experiment that permits us to assess void growth and microstructure ...
冯炎建 +5 more
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Mechanical Properties of Sandstone after High Temperature [PDF]
, 2016 In this study, we conducted a number of mechanical experiments on sandstone samples from Junan County, Linyi City, in order to investigate the mechanical properties of the sandstone samples after being subjected to high temperatures, ranging from 25 ℃ to
Geng, Jishi +3 more
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Geological conditions of coal reservoir occurrence in the Southern Qinshui Basin and its impact on permeability [PDF]
The occurrence and output of coalbed methane (CBM) are controlled by the occurrence geological conditions of coal reservoirs, such as stress, pressure, and temperature.
Huaxin REN +5 more
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Research on Error Source for Indexble Insert Periphery Precision Grinding [PDF]
, 2017 随着现代切削技术的发展，对于高效、高精度的可转位刀片的需求越来越迫切。可转位刀片常采用高硬、超硬材料，对其关键部位刃口的精密磨制是由可转位刀片周边磨床的五个运动轴联动完成，机床误差对机床加工精度影响显著。为了提高可转位刀片制造技术，项目组联合合作单位自主研发了五轴可转位刀片周边数控磨床2MZK7150，本论文围绕“可转位刀片周边精密磨削误差源研究”课题，从以下几个方面展开研究： 1.基于多体系统理论，建立机床低序体拓扑阵列，通过坐标变换矩阵描述机床运动轨迹的理想值和实际值之间的偏差 ...
王舒阳
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, 2012 为了论证桩基作为仙女堡水电站地基加固手段的理论的可行性,有必要计算桩基础承载力.以3#控河闸为例采用ANSYS建立了有限元模型,将三种水位与三种桩长组合成3种工况.计算结果表明三种水位工况下的变位及应力变化规律一致,且校核工况下变位及应力水平最高,其次为正常蓄水位,最次之为设计洪水位.天然工况下的地基沉降均超出了规范允许值,闸底板下游右侧铅直应力超过地基承载力,从理论上得出地基加固必要性.根据工程实际,对深厚覆盖层引起闸室的沉降、应力进行深入的研究,分析资料详细 ...
李昌友 +4 more
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[Application and research progress of metal-organic framework materials in skin repair]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiMa S, Wu W, Liu H, Liu M, Xing F.
europepmc +1 more source
[Bioactive substances delivery for bone repair via nanocomposites: advantages, mechanisms, and emerging trends]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiMa Y, Du Z, Wang J, Li X.
europepmc +1 more source
[Research progress on toxic shock syndrome due to group A <i>Streptococcus</i> infection in children]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiWang HY, Zhou W, Huang LS.
europepmc +1 more source
[Advances in application of cell imprinting technology in biomedical field]. [PDF]
Se PuZhao XM, Zhang ZY, Sun WJ, Qing GY.
europepmc +1 more source