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综述:预防性使用维生素D可减少老年人跌倒

英国医学杂志中文版 2005年第2期8卷 118-119页

作者： H A Bischoff-Ferrari Dawson-Hughes B Willett wc 苏珊 Brigham and Women's HospitalBoston MAUSA.hbischof

资料来源：Medline和Cochrane对照试验注册库(1960年1月至2004年2月)，EMBASE／Excerpta Medica数据库(1991年1月至2004年2月)，美国骨和矿物研究协会会议摘要(1995年至2002年)，回顾了相关研究的参考文献，并对未发表的研究联系了该领... 详细信息

资料来源：Medline和Cochrane对照试验注册库(1960年1月至2004年2月)，EMBASE／Excerpta Medica数据库(1991年1月至2004年2月)，美国骨和矿物研究协会会议摘要(1995年至2002年)，回顾了相关研究的参考文献，并对未发表的研究联系了该领域的专家。

关键词：老年人跌倒预防性使用维生素D 2004年2月 Cochrane Medline Medica 1991年 2002年 1995年对照试验资料来源会议摘要参考文献相关研究数据库物研究

Molecular characterisation and phylogenetic analysis of Spirometra erinaceieuropaei from snakes in Hunan Province

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Molecular characterisation and phylogenetic analysis of Spir...

Application of Sediment Traps in Global Change Research in Mountain Lakes

2021中国畜牧兽医学会兽医寄生虫学分会第二届青年科学家学术论坛

作者： TF Gong LX Xie JL He F Li SY Chen wc Li XR Xie YS Liu YF Zhou W Liu Research Center for Parasites & Vectors College of Veterinary MedicineHunan Agricultural University Orient Science & Technology College of Hunan Agriculture University

Sparganosis is a neglected zoonotic parasitic disease found *** play an important role in sparganosis transmission because they are the most common second intermediate hosts for Spirometra ***,the population genetics of Spirometra isolates from snakes is currently not well *** study obtained 49 Spirometra tapeworms from 15 geographical areas in Hunan Province,Central ***,18 S and 28 S ribosomal DNA(rDNA) fragments were amplified from the isolated parasites,and their sequences were analysed to assess their genetic *** analyses were performed using the maximum likelihood *** results showed that sequence variations amongst these isolates were 0%-2.3% and 0%-0.1% for 18 S and 28 S rDNA,*** analysis showed that all Spirometra isolates from Hunan Province were clustered into the same branch with *** isolated from different regions/hosts ***,phylogenetic trees revealed that Spirometra is closely related to Adenocephalus,Pyramicocephalus,Ligula,Dibothriocephalus,Schistocephalus and *** results provide reference values for the future taxonomic status of ***,and the exact phylogenetic position of Spirometra species should be further analysed with more sampling and more useful molecular markers.

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Journal of Mountain Science 2009年第3期6卷 228-239页

作者： G. R. KATTEL Environmental Change Research Centre (ECRC) Department of GeographyUniversity College London Murray-Darling Freshwater Research Centre Brian Grogan Building La Trobe University

Representativity of biota in the biosphere also have similar significance in the lithosphere after their death. Recently, taphonomic representation of biota in the lithosphere has been widely used for minimizing the biases in palaeo-environmental reconstructions including global climate change. In September 2001, a sediment trap was installed at the central area of the Loch Coire Fionnaraich （LCFR）, a small, oligotrophic mountain loch in northwest Scotland for a taphonomic study of cladoceran zooplankton. The trap was emptied on a seasonal basis, where an average 0.14 g dry material was recovered in each season, January, May and August 2002 respectively. A sediment core was also taken from near the sediment trap location. The top 0.5 cm section, the ＇core＇ was used for a comparative study with the trap sediment samples. The planktonic Cladocera consisted of Bosmina coregoni and appeared to have excellent preservation in the trap assemblages. Moreover, some common littoral Cladocera such as Alonella excisa and Aloha guttata appear to be less well preserved in the fossil assemblages. Large littoral taxa such as Eurycercus lamellatus and Aloha quadrangularis were rare in the trap but relatively common and well preserved in the sediment-water interface. It is suggested that taphonomic processes play a dominant role on deposition of fossil remains of Cladocera and caution should be taken while inferring the past environmental changes whilst using fossil assemblages recovered from the lake centre as a representation of the entire cladoceran community in the lake.

关键词： Cladocera mountain lakes taphonomy representativity sediment trap core-top Loch CoireFionnaraich Scotland

综述：口服维生素D可预防65岁以上患者非椎骨骨折及髋骨骨折，其疗效呈剂量依赖性

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英国医学杂志中文版 2010年第1期13卷 52-53页

作者： Bischoff-Ferrari HA Willett wc Wong JB 季媛媛(译) Prevention of nonvertebralfractures with oral vitamin D and dose dependency: a meta-analysis of randomized controlled trials 中华医学杂志英文版编辑部

问题：在65岁以上患者中，口服维生素D能否预防非椎骨骨折及髋骨骨折？所涉及的研究评价了补充口服维生素D的效果并报道平均年龄65岁以上患者中一处以上骨折。研究必须为双盲并且随访1年以上。排除标准包括：非对照研究、观察研究或动... 详细信息

问题：在65岁以上患者中，口服维生素D能否预防非椎骨骨折及髋骨骨折？所涉及的研究评价了补充口服维生素D的效果并报道平均年龄65岁以上患者中一处以上骨折。研究必须为双盲并且随访1年以上。排除标准包括：非对照研究、观察研究或动物研究；研究对象有器官移植史或卒中史；研究对象正接受类固醇类药物治疗或正接受帕金森病治疗。结局为首发或复发的非椎骨骨折或髋骨骨折。

关键词：髋骨骨折椎骨骨折维生素D 剂量依赖性患者口服预防综述

Sino British cooperation for urban environmental enhancement and sustainable development

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Journal of Environmental Sciences 1999年第3期11卷 258-263页

作者： David Norse Department of Geography, University College London, 26 Bedford Way, London wc1H 0AP, UK Lu Yong\|long Research Center for Eco Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China University College London 英国中科院生态环境研究中心北京 100085

This paper gives an overview of the presentations and discussions at the Sino British Workshop on Urban Environmental Enhancement and Sustainable Development held in Beijing from September 9—11, 1998. It summarises the contributions from both the Chinese and British sides to the four major themes of urban sustainability: integrated environmental assessment, water pollution and management, urban transportation and its impacts on air quality, and environmental technology. It also identifies many areas of common interest for further collaboration.

关键词： urban sustainability environmental enhancement environmental management sustainable development.

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呼吸道病毒定植与哮喘病严重度的关系

中国抗感染化疗杂志 2005年第4期5卷 242-244页

作者：张卫东张萧竹 Sonia Baig 邱迪文 wc Tan 广州呼吸疾病研究所呼吸科 510120 新加坡国立大学医学系

目的比较致死样哮喘(NFA)缓解期患者与健康人中常见的呼吸道病毒的分布差异。方法研究对象包括NFA缓解期患者12例,轻症哮喘患者21例及无哮喘病史的健康人52名。诱导痰用于RNA及DNA的提取,PCR及RT-PCR方法用于7种常见的呼吸道病毒,微小病... 详细信息

目的比较致死样哮喘(NFA)缓解期患者与健康人中常见的呼吸道病毒的分布差异。方法研究对象包括NFA缓解期患者12例,轻症哮喘患者21例及无哮喘病史的健康人52名。诱导痰用于RNA及DNA的提取,PCR及RT-PCR方法用于7种常见的呼吸道病毒,微小病毒(HRV),流感病毒A、B,副流感病毒1、3,呼吸道合胞病毒及腺病毒的检测。结果NFA缓解期患者的病毒检出率为42%(5/12),而轻症患者为24%(5/21),健康人为10%(5/52)。NFA患者的病毒检出率显著高于健康人。微小病毒、流感病毒A、B可存在于NFA缓解期患者的下呼吸道内。而健康人呼吸道内以微小病毒为主。哮喘患者气道内存在2种以上病毒定植的情况。结论呼吸道病毒可定植于哮喘患者及健康人的气道内而不诱发呼吸道症状,呼吸道病毒定植可能与哮喘的严重度有关。

关键词：呼吸道病毒逆转录-聚合酶链反应

生命科学仪器中发光二极管型激发光源性能的提高

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中国组织工程研究与临床康复 2007年第9期11卷 1692-1694页

作者：刘振方胡亚平张文超辽宁石油化工大学信息与控制工程学院辽宁省抚顺市113001 上海大学高等技术学院上海市200041

目的:在生命科学仪器中应用发光二极管作为激发光源已成为趋势,分析影响发光二极管型激发光源性能的相关因素,使之能采取相应措施提高发光二极管型激发光源的稳定性及其精度。方法:对现有典型的发光二极管型激发光源“恒流”驱动电路进... 详细信息

目的:在生命科学仪器中应用发光二极管作为激发光源已成为趋势,分析影响发光二极管型激发光源性能的相关因素,使之能采取相应措施提高发光二极管型激发光源的稳定性及其精度。方法:对现有典型的发光二极管型激发光源“恒流”驱动电路进行分析,针对发光二极管型激发光源的稳态精度、动态稳定性、时间稳定性和温度稳定性采取了改进措施。在恒流驱动电路基础上,增加可分别调整P,I,D参数的PID控制电路来提高发光二极管型激发光源的稳态精度和动态稳定性,采用光反馈技术的“恒光功率”驱动电路来提高发光二极管型激发光源的时间稳定性和温度稳定性。结果:不加PID控制电路时,ε≤0.6mA,△IP≤7.8%,tW≤13μs。采用PID控制电路后稳态精度提高到ε≤0.05mA,动态特性提高到:超调量为△IP≤3%,动态过程时间tW≤87ns。采用“恒光功率”驱动电路后抑制了温度波动的影响,使用寿命增长。结论:恒流驱动电路适用于工作温度变化不大和不考虑时间稳定性(发光二极管老化问题)的场合;而当工作温度变化较大并且需要考虑时间稳定性的场合,就要采用恒功率驱动电路为好。无论恒流驱动还是恒功率驱动电路,加入PID控制之类的调节电路可以获得好的动态特性和提高稳态精度。

关键词： LED驱动恒流驱动恒功率驱动

Important role of cardiac spect imaging in patients undergoing percutaneous transluminal coronary angioplasty

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Chinese Medical Journal 1999年第3期 64-67页

作者： Babington Chun kuen Yung, Wai Kwong Chan, Chiu Sun Yue, Wai Chau Fan, Kwok Fai Leung Amy Siu ling Fung and James Chi sang Chan Department of Radiology and Organ Imaging (Yung CK, Fan wc, Chan CS) & Department of Medicine and Geriatrics (

Objective To examine the utilization and contribution of cardiac perfusion scans to patients undergoing percutaneous transluminal coronary angioplasty. Methods From July 1996 to January 1998, 34 patients underwent percutaneous transluminal coronary angioplasty and cardiac SPECT imaging was studied. Twenty five patients had pre procedure SPECT scans. The agreement between angioplasty strategies and SPECT findings of ischemia and hypokinesia was *** When radionuclide imaging was performed before revascularization procedures, 84% of the patients had intervention strategies guided by scan findings. Perfusion scan findings including extent and severity of ischemia, degree of hypokinesia directed the selection of target vessel for angioplasty in the patient subgroup with multi vessel disease. Post angioplasty radionuclide cardiac scans were performed only on symptomatic patients, demonstrating ischemia and hypokinesia in most of them, conceivably reflected the selection *** We recommend routine pre and post angioplasty radionuclide imaging with multigated scans for wall motion assessment for all patients receiving coronary intervention.

关键词： multigated SPECT angioplasty ischemia hypokinesia

新加坡加强监护病房(MICU)中抗生素治疗院内获得性肺炎的可行性

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中华结核和呼吸杂志 1997年第Z1期20卷 79-79页

作者： Stebbings AEL Tan wc TiTY 严炯(译) DivisionofRespiratoryMedicine NationalUniversityHospitalSingapore