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纳氏皱皮螨生活史的研究  [PDF]
沈兆鹏
昆虫学报 , 1988,
Abstract: 纳氏皱皮螨SuidasianesbittiHughes是我国重要储藏物螨类之一.在我国大陆和台湾省,腐食酪螨Tyrophagusputrescentiae(Schrank)是最重要的储藏物螨类,其次是皱皮螨属Suidasia的二个种,即大陆的纳氏皱皮螨和台湾省的棉兰皱皮螨S.medanensisOudemans.本文研究了纳氏皱皮螨的生活史,并对生活史各发育阶段的形态进行描述.本文还对纳氏皱皮螨和棉兰皱皮螨的形态,分布和为害情况列表进行比较.
经皮撬拨复位结合注射型硫酸钙植骨治疗跟骨关节内骨折  [PDF]
沈啟捷
天津医药 , 2011,
Abstract: ?目的探讨经皮撬拨复位结合注射型硫酸钙植骨治疗跟骨关节内骨折的临床效果及优点。方法2007年4月-2009年4月治疗新鲜闭合跟骨骨折16例。男11例,女5例。年龄23-56岁,平均34.5岁。骨折按sander分型:ii型8例,iii型6例,iv型2例。受伤到手术时间3d-16d,平均7.3d。在c型臂透视下,经皮撬拨复位塌陷的关节面骨块,以骨圆针通过跟骨结节,复位的关节面骨块固定到骰骨。固定完成后,注入注射型硫酸钙到距下关节下方骨缺损处,石膏托辅助固定。术后x线片评价标准为后关节面移位<2mm,跟骨外形恢复满意。术后功能评价依据美国足踝外科协会(aofas)后足评分系统进行评分。结果植入注射型硫酸钙全部吸收,未出现排异反应及针孔感染,骨折全部愈合。x线片跟骨后关节面复位良好,跟骨外形恢复基本满意。按aofas评分系统评分,优9例,良6例,可1例,优良率93.8%。结论经皮撬拨复位结合注射型硫酸钙植骨治疗跟骨关节内骨折效果满意。而且符合微创手术原则,手术操作简便,有利于患足功能的恢复。,目的探讨经皮撬拨复位结合注射型硫酸钙植骨治疗跟骨关节内骨折的临床效果及优点。方法2007年4月-2009年4月治疗新鲜闭合跟骨骨折16例。男11例,女5例。年龄23-56岁,平均34.5岁。骨折按sander分型:ii型8例,iii型6例,iv型2例。受伤到手术时间3d-16d,平均7.3d。在c型臂透视下,经皮撬拨复位塌陷的关节面骨块,以骨圆针通过跟骨结节,复位的关节面骨块固定到骰骨。固定完成后,注入注射型硫酸钙到距下关节下方骨缺损处,石膏托辅助固定。术后x线片评价标准为后关节面移位<2mm,跟骨外形恢复满意。术后功能评价依据美国足踝外科协会(aofas)后足评分系统进行评分。结果植入注射型硫酸钙全部吸收,未出现排异反应及针孔感染,骨折全部愈合。x线片跟骨后关节面复位良好,跟骨外形恢复基本满意。按aofas评分系统评分,优9例,良6例,可1例,优良率93.8%。结论经皮撬拨复位结合注射型硫酸钙植骨治疗跟骨关节内骨折效果满意。而且符合微创手术原则,手术操作简便,有利于患足功能的恢复。
如意金黄散黑膏药透皮吸收示踪研究  [PDF]
赵洪武,沈子龙,周斌,林新华,叶明波
中国中药杂志 , 1993,
Abstract: 采用如意金黄散的有效成分之一——小檗碱的氚标记物作示踪剂,用放射性同位素示踪法,测定了在体和离体皮肤小檗碱透皮速率和血药浓度,并进行了不同制备工艺黑膏药和不同动物皮肤对透皮速率影响的对比研究。
皮纳卫星遥测数据异常检测聚类分析方法  [PDF]
王婵,王慧泉,金仲和
- , 2018, DOI: 10.11918/j.issn.0367-6234.201612148
Abstract: 为满足皮纳卫星高维遥测数据的实时、自动化、抗概念漂移等处理要求, 提出一种基于聚类的遥测数据异常检测方法, 包括子空间搜索和两阶段遥测数据聚类处理两部分.子空间搜索, 通过熵值实现所有遥测数据低维子空间划分, 降低计算复杂度, 避免“维度灾难”的发生; 两阶段遥测数据聚类处理, 在线阶段通过网格索引实时发现单点异常, 离线阶段通过聚类挖掘数据的集体异常及其特征, 满足快速异常检测和复杂异常检测两种需求, 并通过正常状态数据的迭代更新和算法的自适应修改, 抵抗概念漂移.ZDPS-1A卫星历史遥测数据的分析结果表明, 皮纳卫星遥测数据异常检测聚类方法在线阶段能实时处理10 kHz的流量数据, 发现95%的单点异常, 满足皮纳卫星实时遥测数据异常检测的一般需求; 算法自适应了卫星快速转动导致的数据漂移, 维持了稳定的单簇形态; 同时相比原边界检查系统早一个月检测出姿态确定与控制系统中程序跑飞引起的太阳敏感器数据紊乱故障.所提出的算法针对性解决了高维、存在概念漂移的遥测数据异常检测问题, 能实时检测单点异常, 具有集体异常挖掘能力, 适用于皮纳卫星星座组网的地面监控系统.
To meet the real time, automation, anti-concept drift and other processing requirements of pico-satellite high dimensionality telemetry data, a new cluster-based telemetry data anomaly detection method is proposed.The method contains correlative subspace search and two-phase density-based clustering processing for telemetry data.Subspace search calculates the entropy and entropy gain value to achieve low-dimensional subspace partitions of all telemetry data, to reduce the computational complexity and to avoid the occurrence of "dimension disasters".Two-phase telemetry data clustering algorithm meets the requirements of rapid anomaly detection and complex anomaly detection.In the online phase, the grid indexes are used to find single anomalies in real time, in the off-line phase, their specific features of the selected mining data are clustered to find collective anomalies.It also supports the anti-concept drift by iterative updating of normal data features and adaptive modification of the algorithm.The analysis for telemetry data of ZDPS-1A shows that in the on-line phase 10 kHz flowing data can be processed in real time and 95% of single-point anomalies can be found to meet the general needs of real-time telemetry data anomaly detection of Pico Satellite.This method adapts itself to change satellite conditions.The single cluster stays stable when the satellite rotates faster.This approach also detects an anomaly caused by attitude determination and control system's breakdown one month earlier than the current limit-checking system.The proposed algorithm solves the anomaly detection problem of telemetry data with high dimension and concept drift.It is suitable for the ground monitoring system of pico-satellite constellations.
1991年诺贝尔物理学奖获得者皮埃尔—吉勒·德燃纳
赵静安
现代物理知识 , 1992,
Abstract: 一、德燃纳的简历及其在物理学中的贡献。皮埃尔-吉勒·德燃纳(Pierre Gilles de Gennes)1932年生于法国巴黎,1955-1959年在原子能中心(Saclay)作研究工程师,从事中子散射和磁学方面的研究工作,随后在Berkeley完成博士后和进行高级研究或工作访问,1961年被聘为奥塞巴黎大学固体物理学助理教授,讲授金属与台金的超导理论,1968年他的研究方向转向液晶物理方面,
皮纳图博火山喷发物在南极点雪层内的记录及其意义
Jihong,Cole-Dai,Ellen,Mosley-Thompson,秦大河
科学通报 , 1999,
Abstract: 1991年6月菲律宾皮纳图博火山喷发,导致大气圈火山灰气溶胶含量激增,连同1991年8月智利哈德森火山喷发释放的火山灰一道,导致自1991年12月起南极点降水中SO^2-4开始增加,激光雷达同时也观测到富含火山微尘气团的到达。雪样中火山微粒的电镜分析结果,以及据物质平衡观测值估算的年代等表明,1994年12月在南极点0.1-0.9m雪层中可钭2次火山喷发事件区别开采、估算出南极点处皮纳图博火山和哈
利用SAGEⅡ资料分析皮纳图博火山爆发前后平流层气溶胶的变化特征  [PDF]
陈洪滨
科学通报 , 1994,
Abstract: 理论和观测研究都表明,强火山爆发送入平流层的气溶胶直接和间接地影响全球的气候变化;平流层火山气溶胶对地球-大气系统的遥感也有一定的影响.所以,监测全球范围内平流层气溶胶的分布变化(尤其是火山爆发引起的)是十分重要的.1991年6月15—16日菲律宾皮纳图博(Pinatubo)(15°N,120°E)强火山爆发后,人们使用了多种方法和技术对其产生的平流层火山气溶胶云进行了监测和研究.例如,我国孙金辉等人用激光雷达探测了1991年7月至1992年1月北京地区上空由皮纳图博火山造成的平流层气溶胶浓度的变化;McCormick等和Stowe等分别根据SAGEⅡ和NOAA/11AVHRR资料研究了早期(约2.5个月)皮纳图博火山气溶胶.
“网球拍”状内踝上穿支螺旋桨皮瓣修复跟踝部软组织缺损疗效观察
Effectiveness of medial ankle branches propeller “Tennis racket-like” flap in repair of heel-ankle tissue defects
 [PDF]

程定,崔树英,张成书,李艳玲,李恒,王香玲,王俊,郑乐
- , 2018, DOI: 10.7507/1002-1892.201804030
Abstract: 目的 总结“网球拍”状内踝上穿支螺旋桨皮瓣修复跟踝部软组织缺损的疗效。 方法 2011 年 6 月—2016 年 6 月,收治 50 例跟踝部软组织缺损患者。男 40 例,女 10 例;年龄 6~58 岁,中位年龄为 35.6 岁。缺损原因:外伤 44 例,外伤后瘢痕畸形 2 例,慢性溃疡 2 例,鳞癌 2 例。缺损部位:足跟部 20 例,踝部 15 例,跟踝部 15 例。软组织缺损范围为 3.5 cm×2.0 cm~13.0 cm×10.0 cm。病程 3 h~2 个月,平均 28 d。采用“网球拍”状内踝上穿支螺旋桨皮瓣修复,皮瓣切取范围 3.8 cm×2.2 cm~13.4 cm×10.3 cm。供区直接缝合(5 例)或植皮修复(45 例)。 结果 术后皮瓣均顺利成活,创面Ⅰ期愈合。供区 1 例植皮部分坏死,经换药后愈合;其余植皮均顺利成活,切口均Ⅰ期愈合。术后 48 例获随访 12 个月,皮瓣修复处外形、功能恢复良好,感觉恢复良好。 结论 “网球拍”状内踝上穿支螺旋桨皮瓣成活率高,血供可靠,移位后能恢复感觉,是修复跟踝部缺损较理想的方式之一。
Objective To investigate effectiveness of the medial ankle branches propeller " Tennis racket-like” flap in repair of heel-ankle tissue defect. Methods Between June 2011 and June 2016, 50 patients with heel-ankle tissue defects were treated. There were 40 males and 10 females, with a median age of 35.6 years (range, 6–58 years). The defects were caused by trauma in 44 cases, scar deformity after trauma in 2 cases, chronic ulcer in 2 cases, and squamous cell carcinoma in 2 cases. The defects located at heel in 20 cases, ankle in 15 cases, and heel-ankle in 15 cases. The size of heel-ankle tissue defect ranged from 3.5 cm×2.0 cm to 13.0×10.0 cm. The course of disease ranged from 3 hours to 2 months (mean, 28 days). All wounds were repaired by the medial ankle branches propeller " Tennis racket-like” flap in a size of 3.8 cm×2.2 cm–13.4 cm×10.3 cm. The donor site was directly sutured in 5 cases or repaired by skin grafting in 45 cases. Results All flaps survived and wounds healed by first intention. Partial necrosis of skin grafting occurred in 1 case, and the wound recovered by change dressing. The other skin grafting survived and wounds healed by first intention. Forty-eight patients were followed up 12 months after operation. The appearance, sensory, and function of repaired heel-ankle flaps were satisfactory. Conclusion For heel-ankle tissue defect repair, the medial ankle branches propeller " Tennis racket-like” flap has advantages of the high survival rate, reliable blood supply, and sensory recovery.
皮纳图博火山喷发物在南极点雪层内的记录及其意义  [PDF]
Jihong,Cole-Dai,Ellen,Mosley-Thompson,秦大河
科学通报 , 1999,
Abstract: 1991年6月菲律宾皮纳图博火山喷发,导致大气圈火山灰气溶胶含量激增,连同1991年8月智利哈德森火山喷发释放的火山灰一道,导致自1991年12月起南极点降水中SO2-4开始增加.激光雷达同时也观测到富含火山微尘气团的到达.雪样中火山微粒的电镜分析结果,以及据物质平衡观测值估算的年代等表明,1994年12月在南极点0.1~0.9m雪层中可将2次火山喷发事件区别开来,估算出南极点处皮纳图博火山和哈德森火山SO2-4的净通量分别为(10.9±1.1)和(3.2±1.1)kg·km-2.南半球中、高纬度地区的火山喷发在南极雪冰中的信号大于低纬地区火山的影响,这一方法可用来推算冰芯记录的古火山活动的量级和规模.
皮纳卫星数据存储系统设计与在轨验证  [PDF]
刘光辉,周军,孙菲
- , 2018, DOI: 10.11918/j.issn.0367-6234.201706176
Abstract: 为提高皮纳卫星数据存储系统性能和可靠性,提出了一种基于3种介质的“三级数据存储+三模容错架构”存储系统策略.首先,基于对星载存储介质的现状和故障特性分析,选择存储器件;然后对文件系统操作流程进行详细研究,提出错误来源;由此提出了采用ECC纠错、冗余备份和电流保护的方法提高系统可靠性;提前预分配文件空间,建立环形数据存储结构,以减少FS操作复杂性,降低错误率;结合RAM、FRAM、SD卡(secure digital card, SDC)三者的优点,采用三级数据存储策略来提高存储速度和故障容错能力;最后,通过地面实验测试,在1 MB总数量时,数据写入速度提高约4.7倍,任一SDC异常或者系统突然断电均不影响系统正常工作,数据丢失≤1帧,故障切换时间≤10 ms.卫星在轨运行过程中,FS、文件和介质均工作正常,且未影响其他系统工作.地面实验和在轨验证结果表明,数据存储系统方案有效可行,系统可靠性和读写性能均能满足卫星系统的任务需求.
A storage strategy based on "three-level data storage, three-mode fault-tolerant structure" is proposed to improve the performance and the reliability of the data storage system for nano-pico satellites. Firstly, the storage device is selected based on the analysis of the onboard storage media and fault characteristics. After analyzing the error sources of the file system, a scheme combining the ECC error correction, the redundancy backup and the current protection is applied to improve the reliability of the system. The file space is pre-allocated and a ring data storage structure is established to reduce errors and decrease the operating complexity for the file system. Finally, taking the advantages of RAM, FRAM and SD card, a three-level data storage method is utilized to improve the storage speed and the fault tolerance. writing speed increases by about 4.7 times when the data size is 1 MB, and the SDC abnormality or abrupt power-off of the system can not affect the system; in addition, the fault switching time is less than or equal to 10 ms when the fault switching time is less than or equal to 1 frame. In orbit operation process, all the FS, files and the storage media work well. The ground test and the in-orbit operation show that the proposed data storage strategy is feasible, and the system reliability and the performance of data reading and writing can meet the mission requirements of satellite system.
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