The bending creep and its disturbance effects of red sandstone rock beam and oil shale rock beam were studied by adopting the self-developed gravitation level style rock creep test machine and bending creep test syste...The bending creep and its disturbance effects of red sandstone rock beam and oil shale rock beam were studied by adopting the self-developed gravitation level style rock creep test machine and bending creep test system,and the constitutive equations were established.It is found that fracture morphology of rock beams under no disturbance load is regular,cracking position of fractures is on part of loading concentration,the crack starts from a neutral plane.However,fracture morphology of rock beams under disturbance load is irregular,cracking position of fractures deviates from a neutral plane.Delayed instability of rock beam occurs for some time under constant disturbance load.When disturbance load is beyond a certain range,suddenly instability of occurs rock beam in a certain time.The results show that there is a guiding significance for creep stability in the geotechnical engineering fields.展开更多
From the physical changes of an organism and by combining the dissipative structure with the entropy theory we study the entropy variation of organism lying in the opennonequilibrium native state under ion implantatio...From the physical changes of an organism and by combining the dissipative structure with the entropy theory we study the entropy variation of organism lying in the opennonequilibrium native state under ion implantation. The result indicates that the ion implantation increases the conformational entropy, restricts the process of the organism＇s ordering, and leads to a new bio-effect.展开更多
基金Projects(50474029,50174035) supported by the National Natural Science Foundation of China
文摘The bending creep and its disturbance effects of red sandstone rock beam and oil shale rock beam were studied by adopting the self-developed gravitation level style rock creep test machine and bending creep test system,and the constitutive equations were established.It is found that fracture morphology of rock beams under no disturbance load is regular,cracking position of fractures is on part of loading concentration,the crack starts from a neutral plane.However,fracture morphology of rock beams under disturbance load is irregular,cracking position of fractures deviates from a neutral plane.Delayed instability of rock beam occurs for some time under constant disturbance load.When disturbance load is beyond a certain range,suddenly instability of occurs rock beam in a certain time.The results show that there is a guiding significance for creep stability in the geotechnical engineering fields.
基金suppored by the Innovation Project of the Chinese Academy of Sciences (No. KSCX-SW-324)the National Science Fund for Distinguished Yong Scholars (No. 10225526)
文摘From the physical changes of an organism and by combining the dissipative structure with the entropy theory we study the entropy variation of organism lying in the opennonequilibrium native state under ion implantation. The result indicates that the ion implantation increases the conformational entropy, restricts the process of the organism＇s ordering, and leads to a new bio-effect.
