The meshless method is a new numerical technology presented in recent years.It uses the moving least square(MLS) approximation as its shape function,and it is determined by the basic function and weight function.The w...The meshless method is a new numerical technology presented in recent years.It uses the moving least square(MLS) approximation as its shape function,and it is determined by the basic function and weight function.The weight function is the mainly determining factor,so it greatly affects the accuracy of the computational results.The process of cylinder compression was analyzed by using rigid-plastic meshless variational principle and programming reproducing kernel partial method(RKPM),the influence of node number,weight functions and size factor on the solution was discussed and the suitable range of size factor was obtained.Compared with the finite element method(FEM),the feasibility and validity of the method were verified,which proves a good supplement of FEM in this field and provides a good guidance for the application of meshless in actual engineering.展开更多
During the past ten years. our molecular studies haddemonstrated that myelodysplasia of MDS bone marrowwas associated with the rearrangement/amplification ofc-erbB and deletion/ inactivation of c-erbA and identifiedth...During the past ten years. our molecular studies haddemonstrated that myelodysplasia of MDS bone marrowwas associated with the rearrangement/amplification ofc-erbB and deletion/ inactivation of c-erbA and identifiedthe sites of the rearrangement by v-erbB PCR genediagnosis of MDS and confirmed their etiogenicsignificance by the follow-up of MDS cases. These resultsprovided 2 target sequences of c-erbB.The展开更多
基金Project(02103) supported by the National Education Department of ChinaProject(200509) supported by the Central South University of Forestry and Technology+1 种基金Project(07031B) supported by Scientific Research Fund of Central South University of Forestry and TechnologyProject supported by the Rewarding Project for Excellent PhD Thesis of Hunan Province,China
文摘The meshless method is a new numerical technology presented in recent years.It uses the moving least square(MLS) approximation as its shape function,and it is determined by the basic function and weight function.The weight function is the mainly determining factor,so it greatly affects the accuracy of the computational results.The process of cylinder compression was analyzed by using rigid-plastic meshless variational principle and programming reproducing kernel partial method(RKPM),the influence of node number,weight functions and size factor on the solution was discussed and the suitable range of size factor was obtained.Compared with the finite element method(FEM),the feasibility and validity of the method were verified,which proves a good supplement of FEM in this field and provides a good guidance for the application of meshless in actual engineering.
文摘During the past ten years. our molecular studies haddemonstrated that myelodysplasia of MDS bone marrowwas associated with the rearrangement/amplification ofc-erbB and deletion/ inactivation of c-erbA and identifiedthe sites of the rearrangement by v-erbB PCR genediagnosis of MDS and confirmed their etiogenicsignificance by the follow-up of MDS cases. These resultsprovided 2 target sequences of c-erbB.The
