In order to research the plastic performance of sheet going through the drawbead and the simple tensile test of sheet, the influence of drawbead structure parameters on sheet performance and the subsequent performance...In order to research the plastic performance of sheet going through the drawbead and the simple tensile test of sheet, the influence of drawbead structure parameters on sheet performance and the subsequent performance of the sheet were performed to investigate the residual deformation characteristics of the sheet through different drawbead structures, and also the influences of drawbead structures and geometry parameters on pre-deformation and subsequent forming characters of sheet were analyzed. The results show that the pre-deformation decreases with the increase of the round corner radius, the pre-deformation increase with the increase of the height of drawbead, and the subsequent forming characteristics of sheet going through drawbead are remarkably different from undeformed sheet and these differences heavily depend on the pre-deformation. With the increases of pre-deformation, the yield ratio increases, but the subsequent elongation exponential decreases. These means deformability of the sheet is significantly reduced. As the structure of drawbead changes, the mechanical characteristics of material in different cyclic loading conditions also change. For the BUFDE+Z deep drawing steel sheet, the subsequent performance of the sheet is hardened when the pre-deformation is greater than 0.044. For the DC52D+ZF hot-galvanize steel sheet, the subsequent performance of the sheet begins to harden when the pre-deformation is greater than 0.079, and it presents that the pre-deformation is not bigger than 0.052.展开更多
The differences between the formation processes of lab backfill samples and field backfill were analysed. An improved sampling mold, containing an outer box shell and inner sampling mold, was put forward. The new and ...The differences between the formation processes of lab backfill samples and field backfill were analysed. An improved sampling mold, containing an outer box shell and inner sampling mold, was put forward. The new and traditional test molds were applied to make subsequent-backfill samples of Yong-ping Copper Mine. The observation of mass fraction and theory analysis of settlement and distribution of tailing particles were carried out. The research results show that the magnitude of the strength of the backfill forming in new mold is lower than that of backfill forming in traditional mold, and the biggest gap amounts to 36%.展开更多
Many cancer gene therapy strategies arevaccination strategies aiming at the induction ofcytolytic immune responses against the malignantcells. These strategies include modification of thetumour cells by transfection w...Many cancer gene therapy strategies arevaccination strategies aiming at the induction ofcytolytic immune responses against the malignantcells. These strategies include modification of thetumour cells by transfection with the genes of co-stimulatory molecules for cytotoxic T lymphocytes(CTL) such as IL-2 and B7, or manipulation ofbystander cells like autologous fibroblasts byintroduction of cytokine genes and subsequent co-展开更多
06001 Technical Requirements for VCXO used inthe Cesium Atomic Clock. Zheng Lisheng: 1(4), 1980.pp.316--320.Voltage controlled crystal oscillator (VCXO) plays an im-portant roll in the atomic frequency standard. Thepe...06001 Technical Requirements for VCXO used inthe Cesium Atomic Clock. Zheng Lisheng: 1(4), 1980.pp.316--320.Voltage controlled crystal oscillator (VCXO) plays an im-portant roll in the atomic frequency standard. Theperformance of VCXO must be excellent so as to main-展开更多
Since its emergence half a century ago,magnetoencephalography(MEG)technology has been recognized as one of the most ideal non-invasive measures to explore functional brain activities^([1]).However,its subsequent devel...Since its emergence half a century ago,magnetoencephalography(MEG)technology has been recognized as one of the most ideal non-invasive measures to explore functional brain activities^([1]).However,its subsequent development has fallen short of expectations,e.g..展开更多
A Simple,Rapid,Comparative Evaluation of Multiple Products for Decontamination of Actinidecontaminated Rat Skin Ex Vivo Nina M.Griffiths1,Karine Devilliers1,Pierre Laroche2,Anne Van der Meeren1(1.Laboratory of RadioTo...A Simple,Rapid,Comparative Evaluation of Multiple Products for Decontamination of Actinidecontaminated Rat Skin Ex Vivo Nina M.Griffiths1,Karine Devilliers1,Pierre Laroche2,Anne Van der Meeren1(1.Laboratory of RadioToxicology,CEA,Paris-Saclay University,Bruyères le Chatel,France;2.Direction of Health,Security,Environment&Radioprotection,ORANO,Paris,France)Abstract:Decontamination of skin is an important medical countermeasure in order to limit potential internal contamination by radionuclides such as actinides.Minimizing skin surface contamination will ultimately prevent internal contamination and subsequent committed effective dose as well as contamination spreading.The decontamination agents tested on a rat skin ex vivo model ranged from water to hydrogel wound dressings.A surfactant-containing cleansing gel and calixarene nanoemulsion with chelation properties demonstrated marked decontamination efficacies as compared with water or the chelator DTPA.展开更多
This paper piled some key experiments related with theoreticalresearch of mechanism on high T_c superconductivity and pointed out theimportance of experimental research to present raw data for theoreticalresearch of m...This paper piled some key experiments related with theoreticalresearch of mechanism on high T_c superconductivity and pointed out theimportance of experimental research to present raw data for theoreticalresearch of mechanism on high T_c superconductivity.展开更多
Due to the limited transmission resources for data relay in the tracking and data relay satellite system （TDRSS）, there are many job requirements in busy days which will be discarded in the conventional job scheduli...Due to the limited transmission resources for data relay in the tracking and data relay satellite system （TDRSS）, there are many job requirements in busy days which will be discarded in the conventional job scheduling model. Therefore, the improvement of scheduling efficiency in the TDRSS can not only help to increase the resource utilities, but also to reduce the scheduling failure ratio. A model of nonhomogeneous parallel machines scheduling problems with time window （NPM-TW） is firstly built up for the TDRSS, considering the distinct features of the variable preparation time and the nonhomogeneous transmission rates for different types of antennas on each tracking and data relay satellite （TDRS）. Then, an adaptive subsequence adjustment （ASA） framework with evolutionary asymmetric path-relinking （EvAPR） is proposed to solve this problem, in which an asymmetric progressive crossover operation is involved to overcome the local optima by the conventional job inserting methods. The numerical results show that, compared with the classical greedy randomized adaptive search procedure （GRASP） algorithm, the scheduling failure ratio of jobs can be reduced over 11% on average by the proposed ASA with EvAPR.展开更多
基金Project(50305031) supported by the National Natural Science Foundation of ChinaProject(E2008000824) supported by Provincial Natural Science Foundation of Hebei
文摘In order to research the plastic performance of sheet going through the drawbead and the simple tensile test of sheet, the influence of drawbead structure parameters on sheet performance and the subsequent performance of the sheet were performed to investigate the residual deformation characteristics of the sheet through different drawbead structures, and also the influences of drawbead structures and geometry parameters on pre-deformation and subsequent forming characters of sheet were analyzed. The results show that the pre-deformation decreases with the increase of the round corner radius, the pre-deformation increase with the increase of the height of drawbead, and the subsequent forming characteristics of sheet going through drawbead are remarkably different from undeformed sheet and these differences heavily depend on the pre-deformation. With the increases of pre-deformation, the yield ratio increases, but the subsequent elongation exponential decreases. These means deformability of the sheet is significantly reduced. As the structure of drawbead changes, the mechanical characteristics of material in different cyclic loading conditions also change. For the BUFDE+Z deep drawing steel sheet, the subsequent performance of the sheet is hardened when the pre-deformation is greater than 0.044. For the DC52D+ZF hot-galvanize steel sheet, the subsequent performance of the sheet begins to harden when the pre-deformation is greater than 0.079, and it presents that the pre-deformation is not bigger than 0.052.
基金Project(2010CB732004) Supported by the National Basic Research Program of ChinaProject(50934006) supported by the Key Project of Science and Technology of Shanghai+1 种基金 ChinaProject(CX2012B073) supported by Doctoral Candidates' Scientific Research Innovation Program of Hunan Province, China
文摘The differences between the formation processes of lab backfill samples and field backfill were analysed. An improved sampling mold, containing an outer box shell and inner sampling mold, was put forward. The new and traditional test molds were applied to make subsequent-backfill samples of Yong-ping Copper Mine. The observation of mass fraction and theory analysis of settlement and distribution of tailing particles were carried out. The research results show that the magnitude of the strength of the backfill forming in new mold is lower than that of backfill forming in traditional mold, and the biggest gap amounts to 36%.
文摘Many cancer gene therapy strategies arevaccination strategies aiming at the induction ofcytolytic immune responses against the malignantcells. These strategies include modification of thetumour cells by transfection with the genes of co-stimulatory molecules for cytotoxic T lymphocytes(CTL) such as IL-2 and B7, or manipulation ofbystander cells like autologous fibroblasts byintroduction of cytokine genes and subsequent co-
文摘06001 Technical Requirements for VCXO used inthe Cesium Atomic Clock. Zheng Lisheng: 1(4), 1980.pp.316--320.Voltage controlled crystal oscillator (VCXO) plays an im-portant roll in the atomic frequency standard. Theperformance of VCXO must be excellent so as to main-
文摘Since its emergence half a century ago,magnetoencephalography(MEG)technology has been recognized as one of the most ideal non-invasive measures to explore functional brain activities^([1]).However,its subsequent development has fallen short of expectations,e.g..
文摘A Simple,Rapid,Comparative Evaluation of Multiple Products for Decontamination of Actinidecontaminated Rat Skin Ex Vivo Nina M.Griffiths1,Karine Devilliers1,Pierre Laroche2,Anne Van der Meeren1(1.Laboratory of RadioToxicology,CEA,Paris-Saclay University,Bruyères le Chatel,France;2.Direction of Health,Security,Environment&Radioprotection,ORANO,Paris,France)Abstract:Decontamination of skin is an important medical countermeasure in order to limit potential internal contamination by radionuclides such as actinides.Minimizing skin surface contamination will ultimately prevent internal contamination and subsequent committed effective dose as well as contamination spreading.The decontamination agents tested on a rat skin ex vivo model ranged from water to hydrogel wound dressings.A surfactant-containing cleansing gel and calixarene nanoemulsion with chelation properties demonstrated marked decontamination efficacies as compared with water or the chelator DTPA.
文摘This paper piled some key experiments related with theoreticalresearch of mechanism on high T_c superconductivity and pointed out theimportance of experimental research to present raw data for theoreticalresearch of mechanism on high T_c superconductivity.
基金supported by the National Natural Science Foundation of China(6113200291338101+3 种基金91338108)the National S&T Major Project(2011ZX03004-001-01)the Research Fund of Tsinghua University(2011Z05117)the Co-innovation Laboratory of Aerospace Broadband Network Technology
文摘Due to the limited transmission resources for data relay in the tracking and data relay satellite system （TDRSS）, there are many job requirements in busy days which will be discarded in the conventional job scheduling model. Therefore, the improvement of scheduling efficiency in the TDRSS can not only help to increase the resource utilities, but also to reduce the scheduling failure ratio. A model of nonhomogeneous parallel machines scheduling problems with time window （NPM-TW） is firstly built up for the TDRSS, considering the distinct features of the variable preparation time and the nonhomogeneous transmission rates for different types of antennas on each tracking and data relay satellite （TDRS）. Then, an adaptive subsequence adjustment （ASA） framework with evolutionary asymmetric path-relinking （EvAPR） is proposed to solve this problem, in which an asymmetric progressive crossover operation is involved to overcome the local optima by the conventional job inserting methods. The numerical results show that, compared with the classical greedy randomized adaptive search procedure （GRASP） algorithm, the scheduling failure ratio of jobs can be reduced over 11% on average by the proposed ASA with EvAPR.
