[ Objective] This study aimed to investigate the genetic variation between hybrids and their parents, and to find a rapid identification method. [ Method ] The progenies between Prunus armeniaca （ apricot ） Katy and...[ Objective] This study aimed to investigate the genetic variation between hybrids and their parents, and to find a rapid identification method. [ Method ] The progenies between Prunus armeniaca （ apricot ） Katy and Prunus salicina （plum） Moriteni were analyzed by means of RAPD and SSR molecular markers. [ Result] We found the differences in the electrophoresis bands between progenies and their parents, indicating that hybrid seedlings obtained in this study were real. [ Conclusion ] The combination of the above methods is effective and fast to identify the hybrids, and can shorten the breeding period.展开更多
The causes of set-marks on woven fabrics were analyzed and the commonly used methods to eliminate this kind of defect were introduced. A non-contact method based on image processing technique to detect the cloth-fell ...The causes of set-marks on woven fabrics were analyzed and the commonly used methods to eliminate this kind of defect were introduced. A non-contact method based on image processing technique to detect the cloth-fell displacement and eliminate set-marks was described in detail in this paper.展开更多
With rollers as elastic bodies and workpieces as elastoplastic bodies,the rolling problem can be viewed as a friction elastic-plastic contact problem.With fewer assumptions in the simulation of strip-rolling process,a...With rollers as elastic bodies and workpieces as elastoplastic bodies,the rolling problem can be viewed as a friction elastic-plastic contact problem.With fewer assumptions in the simulation of strip-rolling process,a boundary element method（BEM）for two-dimensional elastoplastic finite strain and finite deformation analysis of contact problems with friction was presented.All the equations for contact problems,which include multi-nonlinearities,were obtained.Incremental and iterative procedures were used to find contact pressure and friction stress.Moreover,initial strain rate algorithm and work-hardening material behavior can be assumed in the plastic analysis.Several examples were presented,and the results of contact pressure and friction stress were in excellent agreement with those of analysis.展开更多
基金Supported by the Natural Science Foundation of Shandong Province(Q2008D01)Program for Science Research Development of Higher Education Institutions of Shandong Province(J09LC54)
文摘[ Objective] This study aimed to investigate the genetic variation between hybrids and their parents, and to find a rapid identification method. [ Method ] The progenies between Prunus armeniaca （ apricot ） Katy and Prunus salicina （plum） Moriteni were analyzed by means of RAPD and SSR molecular markers. [ Result] We found the differences in the electrophoresis bands between progenies and their parents, indicating that hybrid seedlings obtained in this study were real. [ Conclusion ] The combination of the above methods is effective and fast to identify the hybrids, and can shorten the breeding period.
文摘The causes of set-marks on woven fabrics were analyzed and the commonly used methods to eliminate this kind of defect were introduced. A non-contact method based on image processing technique to detect the cloth-fell displacement and eliminate set-marks was described in detail in this paper.
基金Item Sponsored by National Natural Science Foundation of China(50575155)
文摘With rollers as elastic bodies and workpieces as elastoplastic bodies,the rolling problem can be viewed as a friction elastic-plastic contact problem.With fewer assumptions in the simulation of strip-rolling process,a boundary element method（BEM）for two-dimensional elastoplastic finite strain and finite deformation analysis of contact problems with friction was presented.All the equations for contact problems,which include multi-nonlinearities,were obtained.Incremental and iterative procedures were used to find contact pressure and friction stress.Moreover,initial strain rate algorithm and work-hardening material behavior can be assumed in the plastic analysis.Several examples were presented,and the results of contact pressure and friction stress were in excellent agreement with those of analysis.
