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心率变异性分析方法的现状与展望

生物医学工程与临床 2004年第1期8卷 53-57,60页

作者：柴继红吴水才白燕萍常晓年北京工业大学生物医学工程中心北京100022

心率变异 (HRV)蕴涵着心血管神经及体液调节的大量信息 ,心率变异性分析是近年来心电信号处理领域的研究热点 ,它对于相关疾病的无创检测具有重要的临床意义。本文系统阐述了HRV经典分析方法及其最新研究进展。

关键词：心率变异自主神经系统心电图体液调节

Characterization of Photosystem II in Salt-Stressed Cyanobacterial Spirulina Platensis Cells

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Characterization of Photosystem II in Salt-Stressed Cyanobac...

中国植物生理学会第十次会员代表大会暨全国学术年会

作者： Hongmei Gong2. Yunlai Tang, Jia Wang, Xiaogang Wen1, Lixin Zhang1, Congming Lu1* 1Photosynthesis Research center, Institute of Botany, Chinese Academy of Sciences, beijing, 100093,{2. Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, beijing, 100093,{2. 2.nstitute of Resource and Environment, Henan polytechnic univer.ity,Jiaozuo, 454000,{2.

＜正＞PSII activity was inhibited after Spirulina platensis cells were incubated with different salt concentrations（0–0.8MNaCl） for 12.h. Flash-induced fluorescence kinetics showed that in the absence of DCMU, the ... 详细信息

关键词： Chlorophyll fluorescence Photosystem II PsbO protein Salt stress Spirulina platensis Thermoluminescence.

PROTOTYPE　DESIGN　OF　A　LOAD-ADAPTIVE　PROSTHETIC　ELBOW　JOINT

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Chinese Journal of biomedical engineering(English Edition) 1995年第3期4卷 156-157页

作者： $$$$Huang Changhua Zhang Jichuan and Jin Dewen(Rehabilitation Engng Research center,Depart.of Precision Instruments,Tsinghua univer.ity,{2. 100084,china)

ＰＲＯＴＯＴＹＰＥＤＥＳＩＧＮＯＦＡＬＯＡＤ－ＡＤＡＰＴＩＶＥＰＲＯＳＴＨＥＴＩＣＥＬＢＯＷＪＯＩＮＴＰＲＯＴＯＴＹＰＥＤＥＳＩＧＮＯＦＡＬＯＡＤ－ＡＤＡＰＴＩＶＥＰＲＯＳＴＨＥＴＩＣＥＬＢＯＷＪＯＩＮＴＨｕａｎｇＣ... 详细信息

ＰＲＯＴＯＴＹＰＥＤＥＳＩＧＮＯＦＡＬＯＡＤ－ＡＤＡＰＴＩＶＥＰＲＯＳＴＨＥＴＩＣＥＬＢＯＷＪＯＩＮＴＰＲＯＴＯＴＹＰＥＤＥＳＩＧＮＯＦＡＬＯＡＤ－ＡＤＡＰＴＩＶＥＰＲＯＳＴＨＥＴＩＣＥＬＢＯＷＪＯＩＮＴＨｕａｎｇＣｈａｎｇｈｕａ；ＺｈａｎｇＪｉｃｈ...

关键词： DESIGN JOIN

Dynamic Characteristic Analysis of HIV Mother to Child Transmission in china

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biomedical and Environmental Sciences 2010年第5期23卷 402-408页

作者： JUN-JIE WANG KATHLEEN HEATHER REILLY HUA HAN ZHI-HANG PENG NING WANG National center for AIDS/STD Control and Prevention Chinese Center for Disease Control and PreventionBeijing 100050China Tulane univer.ity Health Sciences center School of Public Health and Tropical MedicineNew OrleansLAUSA National ASIC Design engineering center Institute of AutomationChinese Academy of SciencesBeijing 100190China Department of Epidemiology and Biostatistics Nanjing Medical UniversityNanjing 210029China

Objective to explore dynamic characteristics of the HIV mother to child transmission （MTCT） epidemic in *** A deterministic dynamic transmission model was used to determine the effect of key parameters on the likely long-term trends of the HIV MTCT epidemic in *** 7.0 was used to develop the *** The number of the susceptibles （S）,the transmission rate （β）,and the screening proportion （α） of HIV positive pregnant women have the greatest impact on the HIV MTCT epidemic in *** growth of the MTCT epidemic in china could not be controlled only by decreasing the MTCT transmission *** prevalence of HIV positive women should be reduced and more pregnant women should be tested for *** Prevention of MTCT （PMTCT） should focus not only on the reduction of HIV transmission rates and incidences of HIV among women but also on the increase of HIV testing for pregnant *** most cost-effective PMTCT means for china should be investigated in future studies.

关键词： mother to child transmission dynamic model HIV china

Stability of SARS Coronavirus in Human Specimens and Environment and Its Sensitivity to Heating and UV Irradiation

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biomedical and Environmental Sciences 2003年第3期16卷 246-255页

作者： SHU-MING DUAN, XIN-SHENG ZHAO, RUI-FU WEN, JING-JING HUANG, GUO-HUA PI, SU-XIANG ZHANG, JUN HAN, SHENG-LI BI, LI RUAN, XIAO-PING DONGAND SARS RESEARCH TEAMInstitute for Viral Disease Control and Prevention, Chinese center for Disease Control and Prevention,Ying-Xin Rd. 100, beijing 100052.{2. Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and Prevention Ying-Xin Rd. 100 Beijing 100052 China

Objective The causal agent for SARS is considered as a novel coronavirus that has never been described both in human and animals previously. The stability of SARS coronavirus in human specimens and in environments was studied. Methods Using a SARS coronavirus strain CoV-P9, which was isolated from pharyngeal swab of a probable SARS case in beijing, its stability in mimic human specimens and in mimic environment including surfaces of commonly used materials or in household conditions, as well as its resistances to temperature and UV irradiation were analyzed. A total of 106 TCID50 viruses were placed in each tested condition, and changes of the viral infectivity in samples after treatments were measured by evaluating cytopathic effect (CPE) in cell line Vero-E6 at 48 h after infectionn. Results The results showed that SARS coronavirus in the testing condition could survive in serum, 1:2. diluted sputum and feces for at least 96 h, whereas it could remain alive in urine for at least 72.h with a low level of infectivity. The survival abilities on the surfaces of eight different materials and in water were quite comparable, revealing reduction of infectivity after 72.to 96 h exposure. Viruses stayed stable at 4℃, at room temperature (2.℃) and at 37℃ for at least 2.h without remarkable change in the infectious ability in cells, but were converted to be non-infectious after 90-, 60- and 30-min exposure at 56℃, at 67℃ and at 75℃, respectively. Irradiation of UV for 60 min on the virus in culture medium resulted in the destruction of viral infectivity at an undetectable level. Conclusion The survival ability of SARS coronavirus in human specimens and in environments seems to be relatively strong. Heating and UV irradiation can efficiently eliminate the viral infectivity.

关键词： Severe acute respiratory syndrome Coronavirus Stability Environment Specimen

Sampling Survey of Disability in 0-6 Year-old Children in china

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biomedical and Environmental Sciences 2006年第5期19卷 380-384页

作者： HUI ZHANG SHAO-HUA BO XI-TAN ZHANG MIN LIU ZHI-XIANG ZHANG XIAO-LING YANG SHU-RONG JI HUA YAN XIU-LI SUI XIN NA SHAO-HUA GUO ZHENG-LAI WU Institute of Basic Medical Sciences Chinese Academy of Medical Sciences School of Basic Medicine Peking Union Medical College Beijing 100005 China china Disabled Persons＇ Federation Beijing 100006 China Academy of Military Medical Sciences Beijing 100071 China School of Public Health Health Sciences Center Peking University Beijing 100083 China The First Hospital Peking University Beijing 100034 China Institute for Mental Health Peking University Beijing 100083 China china center for Rehabilitation Research Beijing 100068 China General Hospital Tianjin Medical University Tianjin 300052 China The Third Hospital Affiliated to Tanjin Medical univer.ity Tianjin 300203 China

Objective To investigate the current status of disabled children and prevalence of disabilities in children aged 0-6 years and their risk factors, and to provide scientific evidence for making relevant policies for disabled children. Metlmds In a community-based cross-sectional study, multi-phase, stratified, unequal proportional and cluster sampling was adopted to survey 60 12. children aged 0-6 years. All the investigated children were screened for disabilities, and those with positive screening tests were further diagnosed by various specialties. Results A total of 819 children were diagnosed as disabled with an overall prevalence of 1,362., 0.155% for hearing disability, 0.160% for visual disability, 0.931% for intelligent disability, 0.42.% for limb disability, and 0.101% for mental disability. Prevalence of disability in children was higher in rural areas, and in families with two or more children, low educational level or in divorced families. Conclusion The prevalence of disability can be reduced by economic development, improvement of health care and quality of population, as well as harmonious familial relationship, early prevention of disability, and preschool education for disabled children.

关键词： Children Disability Prevalence Risk factor

BALANCE RECOVERY STRATEGY DURING STANDING USING MECHANICAL ENERGY ANALYSIS

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BALANCE RECOVERY STRATEGY DURING STANDING USING MECHANICAL E...

The 6th International Conference on biomedical engineering and Rehabilitation engineering

作者： Wu Ming Ji Linhong Jin Dewen Wang Rencheng and Zhang JichuanDept. of Precision Instrument and Mechanology Tsinghua univer.ity beijing 100084 {2..Rehabilitation engineering Research center wum@***

＜正＞ Recovery strategies, which are employed by subjects to recovery from perturbation ofupper body during standing, is important for the physical training of balance hypofunction　patients because of age or damage. However, little is known about the relationship between　balance mode and the extent of disturbance. Besides, the contribution of each joint, especially　the metatarsophalangeal （MP） joint, to balance recovery still needs to be evaluated

关键词：

Ceometric calibration of high-resolution remote sensing sensors

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Ceometric calibration of high-resolution remote sensing sens...

5th Asian Symposium on Geographic Information System from Computer Science & engineering View

作者： LIANG Hong-you~(1,2.3) GU Xing-fa~1 TAO Yu~1 QIAO Chao-fei~4 (1.Graduate univer.ity of Chinese Academy of Sciences,beijing 100039,P.R.{2. 2.State Key Laboratory of Remote Sensing Science,Institute of Remote Sensing Applications,CAS,beijing 100101,P.R.{2. 3.Henan polytechnic univer.ity,Jiaozuo 454003,P.R.{2. 4.Development and Research center for Surveying and Mapping State Bureau of Surveying and Mapping,beijing 100044,P.R.{2.)

＜正＞This paper introduces the applications of high-resolution remote sensing imagery and the necessity of geometric calibration for remote sensing sensors considering assurance of the geometric accuracy of remote sensing *** the paper analyzes the general methodology of geometric *** the DMC sensor geometric calibration as an exam- ple,the paper discusses the whole calibration ***,it gave some concluding remarks on geometric calibration of high-resolution remote sensing sensors.

关键词： digital camera geometric calibration geometric correction remote sensing

高温超导V-I特性曲线变电流递增步长计算机采集系统

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物理测试 2001年第1期19卷 18-23页

作者：张文泉林明华崇远北京工业大学材料科学与工程学院北京100022 有色金属研究总院国家超导研究中心北京100088

建立一套可变电流递增步长高温超导“V—I”特性曲线计算机采集系统,可实现对超导样品进行自动变脉冲电流递增步长测试及方便迅速地对所测样品的数据进行分析处理,且提供了测试过程的实时显示与控制。同时软件界面友好,测试过程操作简... 详细信息

建立一套可变电流递增步长高温超导“V—I”特性曲线计算机采集系统,可实现对超导样品进行自动变脉冲电流递增步长测试及方便迅速地对所测样品的数据进行分析处理,且提供了测试过程的实时显示与控制。同时软件界面友好,测试过程操作简单明了,有利于高温超导材料临界电流值I_c与国际研究结果的对比。

关键词：计算机采集系统 “V-I”特性测试临界电流值变电流递增步长高临超导材料