The Main Optical Telescope (MOT) is an important payload of the Space Solar Telescope (SST) with various instruments and observation modes. Its real-time data handling and management and control tasks are arduous. Bas...The Main Optical Telescope (MOT) is an important payload of the Space Solar Telescope (SST) with various instruments and observation modes. Its real-time data handling and management and control tasks are arduous. Based on the advanced techniques of foreign countries, an improved structure of onboard data handling systems feasible for SST, is proposed. This article concentrated on the development of a Central Management & Control Unit (MCU) based on FPGA and DSP. Through reconfigurating the FPGA and DSP programs, the prototype could perform different tasks. Thus the inheritability of the whole system is improved. The completed dual-channel prototype proves that the system meets all requirements of the MOT. Its high reliability and safety features also meet the requirements under harsh conditions such as mine detection.展开更多
目的研究银质针疗法治疗股骨头坏死的临床疗效。方法选取北京市鼓楼中医医院2020年1月~2021年7月收治的120例股骨头坏死患者作为研究对象,按照随机数表法分为对照组和治疗组,每组60例。两组患者均接受口服芪参活骨方加冲击波治疗,对照...目的研究银质针疗法治疗股骨头坏死的临床疗效。方法选取北京市鼓楼中医医院2020年1月~2021年7月收治的120例股骨头坏死患者作为研究对象,按照随机数表法分为对照组和治疗组,每组60例。两组患者均接受口服芪参活骨方加冲击波治疗,对照组患者在此基础上给予温针灸治疗,治疗组患者则给予银质针疗法治疗。比较两组患者疼痛视觉模拟评分(visual analogue score,VAS)、髋关节功能评分(Harris)、髋关节活动度(Range of motion,ROM)及临床疗效。结果两组患者治疗3个月后、6个月后的VAS评分均低于治疗前,Harris评分、髋关节活动度均高于治疗前,差异有统计学意义(P<0.05);治疗组治疗3个月后、6个月后VAS评分均低于对照组,Harris评分、髋关节活动度均高于对照组,差异有统计学意义(P<0.05);治疗组治疗3个月后、6个月后Harris评分优良率高于对照组,差异有统计学意义(P<0.05)。结论银质针疗法治疗股骨头坏死能明显减轻髋关节疼痛、改善髋关节活动度,值得临床应用。展开更多
The formula for a magnetic fluid's apparent density is derived based on Bernoulli's equation of magnetic fluid,and the distribution of the magnetic fluid's apparent density is measured by the intelligent a...The formula for a magnetic fluid's apparent density is derived based on Bernoulli's equation of magnetic fluid,and the distribution of the magnetic fluid's apparent density is measured by the intelligent apparatus of measuring a magnetic fluid's apparent density in an applied perpendicular magnetic field.Magnetic particle chain-like alignments are observed by a transmission electron microscope(TEM).Without an applied magnetic field,the magnetic fluid's density is equal everywhere and the distribution of magnetic particles is homogeneous and unordered.When magnetic induction and magnetic induction gradient gather strength in an applied perpendicular magnetic field,the magnetic fluid's apparent density increases gradually,and more chain-like structures are formed and aligned with the direction of the magnetic field.The results of magnetic particle alignments are correspondent with the distribution of the magnetic fluid's apparent density.Both of them result from particle-particle interactions and particle-carrier liquid interactions,which are eventually controlled by the applied magnetic induction and magnetic induction gradient distribution.展开更多
基金Project 863-2.5.2.25 supported by the National High Technology Research & Development (863) Program of China
文摘The Main Optical Telescope (MOT) is an important payload of the Space Solar Telescope (SST) with various instruments and observation modes. Its real-time data handling and management and control tasks are arduous. Based on the advanced techniques of foreign countries, an improved structure of onboard data handling systems feasible for SST, is proposed. This article concentrated on the development of a Central Management & Control Unit (MCU) based on FPGA and DSP. Through reconfigurating the FPGA and DSP programs, the prototype could perform different tasks. Thus the inheritability of the whole system is improved. The completed dual-channel prototype proves that the system meets all requirements of the MOT. Its high reliability and safety features also meet the requirements under harsh conditions such as mine detection.
文摘目的研究银质针疗法治疗股骨头坏死的临床疗效。方法选取北京市鼓楼中医医院2020年1月~2021年7月收治的120例股骨头坏死患者作为研究对象,按照随机数表法分为对照组和治疗组,每组60例。两组患者均接受口服芪参活骨方加冲击波治疗,对照组患者在此基础上给予温针灸治疗,治疗组患者则给予银质针疗法治疗。比较两组患者疼痛视觉模拟评分(visual analogue score,VAS)、髋关节功能评分(Harris)、髋关节活动度(Range of motion,ROM)及临床疗效。结果两组患者治疗3个月后、6个月后的VAS评分均低于治疗前,Harris评分、髋关节活动度均高于治疗前,差异有统计学意义(P<0.05);治疗组治疗3个月后、6个月后VAS评分均低于对照组,Harris评分、髋关节活动度均高于对照组,差异有统计学意义(P<0.05);治疗组治疗3个月后、6个月后Harris评分优良率高于对照组,差异有统计学意义(P<0.05)。结论银质针疗法治疗股骨头坏死能明显减轻髋关节疼痛、改善髋关节活动度,值得临床应用。
基金Supported by the National Natural Science Foundation of China under Grant No 51077006.
文摘The formula for a magnetic fluid's apparent density is derived based on Bernoulli's equation of magnetic fluid,and the distribution of the magnetic fluid's apparent density is measured by the intelligent apparatus of measuring a magnetic fluid's apparent density in an applied perpendicular magnetic field.Magnetic particle chain-like alignments are observed by a transmission electron microscope(TEM).Without an applied magnetic field,the magnetic fluid's density is equal everywhere and the distribution of magnetic particles is homogeneous and unordered.When magnetic induction and magnetic induction gradient gather strength in an applied perpendicular magnetic field,the magnetic fluid's apparent density increases gradually,and more chain-like structures are formed and aligned with the direction of the magnetic field.The results of magnetic particle alignments are correspondent with the distribution of the magnetic fluid's apparent density.Both of them result from particle-particle interactions and particle-carrier liquid interactions,which are eventually controlled by the applied magnetic induction and magnetic induction gradient distribution.
