目的：探讨星形钛板在膝关节内侧副韧带断裂中的应用，并观察其临床疗效。方法采用星形钛板治疗膝关节内侧副韧带附着处断裂患者12例，螺钉固定使韧带损伤部分与骨质紧密结合，放射状齿钩将韧带正常部分扣紧于骨组织。结果随访时间为10...目的：探讨星形钛板在膝关节内侧副韧带断裂中的应用，并观察其临床疗效。方法采用星形钛板治疗膝关节内侧副韧带附着处断裂患者12例，螺钉固定使韧带损伤部分与骨质紧密结合，放射状齿钩将韧带正常部分扣紧于骨组织。结果随访时间为10～15个月，膝关节功能恢复良好，日常生活无影响。复查 X 线片未见明显内固定松动、退钉、断钉或星形钛板断裂。结论应用星形钛板治疗膝关节内侧副韧带断裂可以良好地恢复膝关节的稳定性，降低韧带再次断裂的风险。展开更多
In the continuous casting production of medium carbon steel (whose mass fraction of carbon is 0.09 % to 0.16 %) and high strength low alloy steel (whose mass fraction of Mn is 0.90 % to 1.40 %), flecks occurring the m...In the continuous casting production of medium carbon steel (whose mass fraction of carbon is 0.09 % to 0.16 %) and high strength low alloy steel (whose mass fraction of Mn is 0.90 % to 1.40 %), flecks occurring the most often are usually longitudinal and star cracks. In additional to the employment of a galvanized plate mould, two kinds of fluxes with special properties were studied and used to harmonize the conflicts between the function of heat transfer and lubrication. An industrial application revealed that the crystallizing temperature (Tc) and crystal ratio (R) of fluxes have a crucible effect on impeding the occurrence of above defects on a slab surface. In the case of slab section (180 to 240) mm(1000 to 1400) mm and casting speed Vc of (0.7 to 1.2) m/min, the optimized parameters of fluxes are Tc of (1170 to 1190) ℃, R of 80 % to 95 % for medium carbon steel, and Tc of (1100 to 1150) ℃, plus R of 40 % to 60 % for high strength low alloy steel.展开更多
Recent discovery of low-dimensional coherent structure in oceanic currents along with a new merged altimeter product called Absolute Dynamic Topography (ADT) makes it possible to derive subsurface ocean information fr...Recent discovery of low-dimensional coherent structure in oceanic currents along with a new merged altimeter product called Absolute Dynamic Topography (ADT) makes it possible to derive subsurface ocean information from satellite remote sensing data.An altimetric geostrophic empirical mode (η-GEM) is developed in this study by projecting hydrographic transects onto the ADT sea surface height coordinate,based on which the four-dimensional thermohaline and velocity structures of oceanic currents are reconstructed from satellite surface observations.In the WOCE/SR3 area,the η-GEM fields capture more than 95% of the total thermal variance.The GEM-derived flow has equivalent-barotropic structure and represents the velocity profile better than traditional dynamic modes.Comparison with mooring observations also demonstrates that the η-GEM provides good estimates of the deep thermohaline fields.展开更多
文摘目的：探讨星形钛板在膝关节内侧副韧带断裂中的应用，并观察其临床疗效。方法采用星形钛板治疗膝关节内侧副韧带附着处断裂患者12例，螺钉固定使韧带损伤部分与骨质紧密结合，放射状齿钩将韧带正常部分扣紧于骨组织。结果随访时间为10～15个月，膝关节功能恢复良好，日常生活无影响。复查 X 线片未见明显内固定松动、退钉、断钉或星形钛板断裂。结论应用星形钛板治疗膝关节内侧副韧带断裂可以良好地恢复膝关节的稳定性，降低韧带再次断裂的风险。
文摘In the continuous casting production of medium carbon steel (whose mass fraction of carbon is 0.09 % to 0.16 %) and high strength low alloy steel (whose mass fraction of Mn is 0.90 % to 1.40 %), flecks occurring the most often are usually longitudinal and star cracks. In additional to the employment of a galvanized plate mould, two kinds of fluxes with special properties were studied and used to harmonize the conflicts between the function of heat transfer and lubrication. An industrial application revealed that the crystallizing temperature (Tc) and crystal ratio (R) of fluxes have a crucible effect on impeding the occurrence of above defects on a slab surface. In the case of slab section (180 to 240) mm(1000 to 1400) mm and casting speed Vc of (0.7 to 1.2) m/min, the optimized parameters of fluxes are Tc of (1170 to 1190) ℃, R of 80 % to 95 % for medium carbon steel, and Tc of (1100 to 1150) ℃, plus R of 40 % to 60 % for high strength low alloy steel.
基金supported by National Basic Research Program of China(Grant Nos. 2007CB411804 and 2012CB417401)Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. KZCX2-YW-Q11-02)National Natural Science Foundation of China (Grant No.41006114)
文摘Recent discovery of low-dimensional coherent structure in oceanic currents along with a new merged altimeter product called Absolute Dynamic Topography (ADT) makes it possible to derive subsurface ocean information from satellite remote sensing data.An altimetric geostrophic empirical mode (η-GEM) is developed in this study by projecting hydrographic transects onto the ADT sea surface height coordinate,based on which the four-dimensional thermohaline and velocity structures of oceanic currents are reconstructed from satellite surface observations.In the WOCE/SR3 area,the η-GEM fields capture more than 95% of the total thermal variance.The GEM-derived flow has equivalent-barotropic structure and represents the velocity profile better than traditional dynamic modes.Comparison with mooring observations also demonstrates that the η-GEM provides good estimates of the deep thermohaline fields.
