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1555篇 您的检索式:作者名="VIVIAN"
    题名 作者 年代 出处 被引量
1再生混凝土细微观结构和破坏机理研究显示文摘再生骨料相当于天然骨料表面附着了一层老砂浆,老砂浆力学性能相对天然骨料较差,造成了再生混凝土内界面过渡区的数量、分布和性能的不同,从而影响了再生混凝土的力学性能.首先通过试验方法研究了再生混凝土中老砂浆的含量和分布;利用扫描电镜考察了新老界面过渡区形貌的异同,分析了老砂浆对界面过渡区的影响;采用有限元软件ANSYS对再生混凝土细观结构的受力特征和破坏机理进行了初步分析.最后利用不同强度等级的废旧混凝土加工成再生粗骨料,制备成再生混凝土,测试其抗压强度和劈裂抗拉强度,验证了再生混凝土受力的破坏机理.肖建庄 刘琼 李文贵 Vivian Tam 2009青岛理工大学学报2009,30,4:64
2MiRNA as potential biomarkers and therapeutic targets for gastric cancer显示文摘Gastric cancer is one of the leading causes of cancer mortality in the world.Aberrant expression of microRNAs(miRNAs)is the hallmarks of this disease.MiRNAs are endogenous non-coding RNAs that involved in many biological processes(e.g.,cell proliferation,differentiation,apoptosis,invasion and development)through gene repression.Deregulation of miRNA expression in gastric tumors and cancer cell lines have been documented to contribute in tumorigenesis,and the expression signature may correlate with different cancer types and clinicopathological features.Here,we summarized the updated gastric cancer-associated miRNAs and the downstream targets in the process of tumorigenesis.Recently,many researchers make use of the miRNA microarray platform to profile miRNA expression in gastric cancer and correlated with different clinical parameters.Its application on cancer diagnosis,prognosis and predictive treatment response rate are still underway and needs further investigation.Emerging roles of miRNAs with oncogenic or tumor suppressive properties in gastric tumorigenesis were discussed.Epigenetic silencing of miRNA by hypermethylation of promoter CpG island was also observed in gastric cancer.However,detailed mechanisms of how miRNAs regulate gene expression in gastric cancer has not been well studied.In this review,we highlight the upto-date findings on the deregulated miRNAs in gastric cancer,and the potential use of miRNA in the clinical settings,such as diagnostic/prognostic markers and chemotherapeutic tools.Vivian Yvonne Shin Kent-Man Chu 2014World Journal of Gastroenterology2014,20,30:59
3Identification of coastal wetlands of international importance for waterbirds:a review of China Coastal Waterbird Surveys 2005–2013显示文摘Background:China's coastal wetlands belong to some of the most threatened ecosystems worldwide.The loss and degradation of these wetlands seriously threaten waterbirds that depend on wetlands.Methods:The China Coastal Waterbird Census was organized by volunteer birdwatchers in China's coastal region.Waterbirds were surveyed synchronously once every month at 14 sites,as well as irregularly at a further 18 sites,between September 2005 and December 2013.Results:A total of 75 species of waterbirds met the 1 % population level Ramsar listing criterion at least once at one site.The number of birds of the following species accounted for over 20 % of the total flyway populations at a single site:Mute Swan(Cygnus olor),Siberia Crane(Grus leucogeranus),Far Eastern Oystercatcher(Haematopus osculans),Bar-tailed Godwit(Limosa lapponica),Spotted Greenshank(Tringa guttifer),Great Knot(Calidris tenuirostris),Spoon-billed Sandpiper(Calidris pygmeus),Saunders' s Gull(Larus saundersi),Relict Gull(Larus relictus),Great Cormorant(Phalacrocorax carbo),Eurasian Spoonbill(Platalea leucorodia),Black-faced Spoonbill(Platalea minor) and Dalmatian Pelican(Pelecanus crispus).A total of 26 sites supported at least one species of which their number met the1 % criterion.Forty-two species met the 1 % criterion in the Yellow River Delta,Shandong;29 at the Cangzhou coast,Hebei and 26 species at the Lianyungang coast,Jiangsu.Conclusions:The results highlight the international importance of China's coastal wetlands for waterbirds.This study also demonstrates that participation of local birdwatchers in waterbird surveys results in data that are invaluable not only for understanding the current status of waterbirds in China's coastal regions but also for waterbird conservation and management.Qingquan Bai Jianzhong Chen Zhihong Chen Guotai Dong Jiangtian Dong Wenxiao Dong Vivian Wing Kan Fu Yongxiang Han Gang Lu Jing Li Yang Liu Zhi Lin Derong Meng Jonathan Martinez Guanghui Ni Kai Shan Renjie Sun Suixing Tian Fengqin Wang Zhiwei Xu Yat-tung Yu Jin Yang Zhidong Yang Lin Zhang Ming Zhang Xiangwu Zeng 2015Chinese Birds2015,,3:20
4Diagnosis of pancreatic tumors by endoscopic ultrasound-guided fine-needle aspiration显示文摘AIM: To evaluate the diagnostic accuracy of endoscopic ultrasound-guided fi ne-needle aspiration (EUS-FNA) for pancreatic solid tumors larger or smaller than 3 cm, and cystic lesions. METHODS: From January/1997 to December/2006, 611 patients with pancreatic tumors were subjected to EUS-FNA. The fi nal diagnosis was obtained either by surgery (356 cases) or after a mean clinical follow-up of 11.8 mo in the remaining patients. RESULTS: There were 405 solid tumors, 189 cystic lesions and 17 mixed. Pancreatic specimens for cytological assessment were successfully obtained by EUS-FNA in 595 (97.4/) cases. There were 352 (57.6/) malignancies and 259 (42.4/) benign tumors. Among the malignancies, pancreatic adenocarcinomas accounted for 67/ of the lesions. Overall, the sensitivity, specifi city, positive and negative predictive values, and accuracy of EUS-FNA were, respectively, 78.4/, 99.2/, 99.3/, 77.2/ and 87.2/. Specif ically for solid tumors, the same parameters for neoplasms larger and smaller than 3 cm were, respectively, 78.8/ vs 82.4/, 100/ vs 98.4/, 100/ vs 99/, 54.8/ vs 74.1/ and 83.1/ vs 87.8/. For cystic lesions, the values were, respectively, 72.2/, 99.3/, 97.5/, 91/ and 92.2/. CONCLUSION: EUS-FNA can be used to sample pancreatic tumors in most patients. Even though the negative predictive value is inadequate for large solid tumors, the results are rather good for small solid tumors, especially concerning the sensitivity, negative predictive value and diagnostic accuracy. Among all pancreatic lesions, EUS-FNA for cystic lesions canreveal the best negative predictive value and diagnostic accuracy, both higher than 90/.José Celso Ardengh César Vivian Lopes Luiz Felipe Pereira de Lima Juliano Rodrigues de Oliveira Filadélfi o Venco Giulio Cesare Santo José Luiz Pimenta Módena 2007World Journal of Gastroenterology2007,13,22:17
5Evaluation of the updated definition of early allograft dysfunction in donation after brain death and donation after cardiac death liver allografts显示文摘BACKGROUND:An updated definition of early allograft dysfunction(EAD) was recently validated in a multicenter study of 300 deceased donor liver transplant recipients.This analysis did not differentiate between donation after brain death(DBD) and donation after cardiac death(DCD) allograft recipients.METHODS:We reviewed our prospectively entered database for all DBD(n=377) and DCD(n=38) liver transplantations between January 1,2006 and October 30,2011.The incidence of EAD as well as its ability to predict graft failure and survival was compared between DBD and DCD groups.RESULTS:EAD was a valid predictor of both graft and patient survival at six months in DBD allograft recipients,but in DCD allograft recipients there was no significant difference in the rate of graft failure in those with EAD(11.5%) compared with those without EAD(16.7%)(P=0.664) or in the rate of death in recipients with EAD(3.8%) compared with those without EAD(8.3%)(P=0.565).The graft failure rate in the first 6 months in those with international normalized ratio ≥1.6 on day 7 who received a DCD allograft was 37.5% compared with 6.7% for those with international normalized ratio <1.6 on day 7(P=0.022).CONCLUSIONS:The recently validated definition of EAD is a valid predictor of patient and graft survival in recipients of DBD allografts.On initial assessment,it does not appear to be a useful predictor of patient and graft survival in recipients of DCD allografts,however a study with a larger sample size of DCD allografts is needed to confirm these findings.The high ALT/AST levels in most recipients of DCD livers as well as the predisposition to biliary complications and early cholestasis make these parameters as poor predictors of graft failure.An alternative definition of EAD that gives greater weight to the INR on day 7 may be more relevant in this population.Kris P Croome William Wall Douglas Quan Sai Vangala Vivian McAlister Paul Marotta Roberto Hernandez-Alejandro 2012Hepatobiliary & Pancreatic Diseases International2012,11,4:15
6蓝莓抑菌活性研究进展显示文摘越橘属的蓝莓含有酚类物质、有机酸类、花青素类和糖类等生物活性成分。较早研究表明,蓝莓具有抗感染、抗氧化、抗肿瘤等功能,而近年的研究表明蓝莓具有抑菌作用。本文介绍了蓝莓的抑菌活性,分析了蓝莓中的抑菌活性成分,同时概括了蓝莓提取物对各种菌体的抑菌机理。陈燕 孙晓红 曹奕 赵勇 Vivian C.H.Wu 潘迎捷 2013天然产物研究与开发2013,25,5:14
7The role of KATP channels in cerebral ischemicstroke and diabetes显示文摘ATP 敏感的钾(K ATP ) 隧道无所不在地在多重机关在房间的血浆膜上被表示包括心,胰和大脑。K ATP 隧道在响应新陈代谢的状态控制并且调整细胞的功能起重要作用,它被 ATP 禁止并且由 Mg 自动数据处理激活,允许房间联合细胞的新陈代谢的状态(ATP/ADP 比率) 到房间膜的电的活动。K ATP 隧道调停在胰腺的小岛贝它房间的胰岛素分泌物,和控制脉管的音调。在 pathophysiological 条件下面, K ATP 隧道在局部缺血或组织缺氧期间在心脏的 myocytes 和神经原起 cytoprotective 作用。K ATP 隧道是 hetero-octameric 建筑群,由四形成毛孔的 Kir6.x 和四规章的 sulfonylurea 受体 SURx 组成子单元。这些子单元是在各种各样的房间类型表示的差别,因此决定房间的敏感到特定的隧道修饰词。antidiabetic 药的 Sulfonylurea 班堵住 K ATP 隧道,是在击的 neuroprotective,能是高度之一司烧为糖尿病的病人的风险因素。在这评论,我们讨论了 K ATP 隧道 blockers 当在与糖尿病患者和服的 ischemic 击有关的病理学的条件下面使用了时。Vivian SZETO Nai-hong CHEN Hong-shuo SUN Zhong-ping FENG 2018Acta Pharmacologica Sinica2018,39,5:13
8牛蒡提取物抗氧化活性及抑菌作用研究显示文摘分别采用1,1-二苯基苦基苯肼(DPPH)和羟基自由基的清除效果以及还原力生成体系,研究了牛蒡皮乙醇提取物(PA)、牛蒡皮水提取物(PW)、牛蒡肉乙醇提取物(MA)和牛蒡肉水提取物(MW)的抗氧化性;以纸片扩散法和最小抑菌浓度的确定研究了四种处理方式所得提取物对大肠杆菌、金黄色葡萄球菌、枯草芽孢杆菌、黑曲霉和酵母菌的抑菌性能。结果显示,四种处理方式所得牛蒡提取物均具有一定的抗氧化作用,其中PA提取物抗氧化性最好;PA、PW和MA具有较好的抑菌效果,PA抑菌效果最好。贺菊萍 梁思 赵勇 孙晓红 Vivian Chi-Hua Wu 潘迎捷 2010食品工业科技2010,31,6:13
9Endoscopic resection of superficial gastrointestinal tumors显示文摘Therapeutic endoscopy plays a major role in the management of gastrointestinal (GI) neoplasia. Its indications can be generalized into four broad categories; to remove or obliterate neoplastic lesion, to palliate malignant obstruction, or to treat bleeding. Only endoscopic resection allows complete histological staging of the cancer, which is critical as it allows stratification and refinement for further treatment. Although other endoscopic techniques, such as ablation therapy, may also cure early GI cancer, they can not provide a definitive pathological specimen. Early stage lesions reveal low frequency of lymph node metastasis which allows for less invasive treatments and thereby improving the quality of life when compared to surgery. Endoscopic mucosal resection (EMR) and endoscopic submucosal dissection (ESD) are now accepted worldwide as treatment modalities for early cancers of the GI tract.Giovannini Marc Cesar Vivian Lopes 2008World Journal of Gastroenterology2008,14,29:12
10Applications of terrestrial laser scanning for tunnels: a review显示文摘In recent years,the use of terrestrial laser scanning( TLS) technique in engineering surveys is gaining an increasing interest due to the advantages of non-contact,rapidity,high accuracy,and large scale. M illions of accurate 3D points( mmlevel accuracy) can be delivered by this technique with a high point density in a short time( up to 1 million points per second),which makes it a potential technique for large scale applications in engineering environments such as tunnels,bridges,and heritage buildings. Tunnels,in particular those with long lengths,create great challenges for surveyors to obtain the satisfactory scanned data. This paper presents a short history of TLS techniques used for tunnels. A general overviewof TLS techniques is given,followed by a reviewof several applications of TLS for tunnels. These applications are classified as: detecting geological features of drilling tunnels,monitoring the geometry of tunnels during excavation,making deformation measurements,and extracting features. The reviewemphasizes howTLS techniques can be used to measure various aspects of tunnels. It is clear that TLS techniques are not yet a common tool for tunnel investigations,but there is still a huge potential to excavate.Weixing Wang Weisen Zhao Lingxiao Huang Vivian Vimarlund Zhiwei Wang 2014Journal of Traffic and Transportation Engineering(English Edition)2014,1,5:12
11顶空固相微萃取-气相色谱质谱分析蓝莓粗提物中的挥发性成分显示文摘通过醇提法提取中国栽培蓝莓品种中的活性物质,采用顶空固相微萃取-气相色谱质谱法(HS-SPME-GCMS)分析了蓝莓粗提物中的挥发性成分,利用面积归一化法定量组分含量。检测出37个化学成分,鉴定了其中的33个化学成分。其中醇类化合物占24.15%,其次是烷烃类化合物,占17.05%,烯烃类化合物占13.61%,酯类化合物占11.97%,还有8.80%的苯和苯酚类化学物,醛、酸、酮类化合物分别为8.79%、8.21%与7.42%。陈燕 孙晓红 孙国伟 任硕 赵勇 Vivian C H Wu 潘迎捷 2013食品工业科技2013,34,20:11
12Distance management of inflammatory bowel disease:Systematic review and meta-analysis显示文摘AIM:To review the effectiveness of distance management methods in the management of adult inflammatory bowel disease(IBD)patients.METHODS:A systematic review and meta-analysis of randomized controlled trials comparing distance management and standard clinic follow-up in the management of adult IBD patients.Distance management intervention was defined as any remote management method in which there is a patient self-management component whereby the patient interacts remotely via a self-guided management program,electronic interface,or self-directs open access to clinic follow up.The search strategy included electronic databases(Medline,PubMed,CINAHL,The Cochrane Central Register of Controlled Trials,EMBASE,KTPlus,Web of Science,and SCOPUS),conference proceedings,and internet search for web publications.The primary outcome was the mean difference in quality of life,and the secondary outcomes included mean difference in relapse rate,clinic visit rate,and hospital admission rate.Study selection,data extraction,and risk of bias assessment were completed by two independent reviewers.RESULTS:The search strategy identified a total of4061 articles,but only 6 randomized controlled trials met the inclusion and exclusion criteria for the systematic review and meta-analysis.Three trials involved telemanagement,and three trials involved directed patient self-management and open access clinics.The total sample size was 1463 patients.There was a trend towards improved quality of life in distance management patients with an end IBDQ quality of life score being 7.28(95%CI:-3.25-17.81)points higher than standard clinic follow-up.There was a significant decrease in the clinic visit rate among distance management patients mean difference-1.08(95%CI:-1.60--0.55),but no significant change in relapse rate or hospital admission rate.CONCLUSION:Distance management of IBD significantly decreases clinic visit utilization,but does not significantly affect relapse rates or hospital admission rates.Vivian W Huang Krista M Reich Richard N Fedorak 2014World Journal of Gastroenterology2014,20,3:9
13Methylprednisolone Inhibits the Expression of Glial Fibrillary Acidic Protein and Chondroitin Sulfate Proteoglycans in Reactivated Astrocytes显示文摘创伤后的神经胶质增生导致硫酸软骨素蛋白聚糖(CSPG)的显著表达,从而抑制轴突生长和再生。甲基强地松龙(MP),一种合成的糖皮质激素,在急性脊髓损伤(SCI)的治疗中有神经保护作用和抗炎效应。但是,MP对于CSPG在活性胶质细胞中的表达的作用尚不清楚。本文用a-氨基-3-羟基-5-甲基-4-异恶唑丙酸酯(AM-PA)诱导星形胶质细胞再活化,用环噻嗪模拟SCI的兴奋性中毒刺激。AMPA治疗后,星形胶质细胞再活化的标志物-胶质纤维酸性蛋白(GFAP)、CSPG神经聚糖和磷酸盐的表达都显著上调。AMPA治疗星形胶质细胞的条件培养液强烈抑制大鼠背根神经节中神经元的轴突生长,但这种作用能被MP的预处理所逆转。此外,MP下调成年SCI大鼠中GFAP和CSPG的表达,对抗RU486的糖皮质激素受体(GR)和GR si RNA能逆转MP对GFAP和神经聚糖表达的抑制作用。这些结果提示,MP能在兴奋性中毒损伤后通过GR介导的星形胶质细胞再活化下调和GSPG表达抑制来改善神经修复,促进轴突生长。WEI-LIN LIU YI-HSUAN LEE SHIH-YING TSAI CHUNG YI HSU YU-YO SUN LIANG-YO YANG SHING-HAN TSAI AND WEI-CHUNG VIVIAN YANG 2008神经损伤与功能重建2008,3,5:9
14副溶血性弧菌免疫磁珠的制备及其应用显示文摘研究比较了不同的免疫磁珠(Immunomagnetic Beads,IMBs)富集捕获副溶血性弧菌的能力。采用两种副溶血性弧菌多克隆抗体,分别包被经羧基和甲苯磺酰胺基基团修饰的磁珠,制备完成5个免疫磁珠(IMB-C1、IMB-C2、IMB-T1、IMB-T2和IMB-T3)。研究引入表面抗体浓度作为评价免疫磁珠捕获能力的特征性参数,两种副溶血性弧菌多克隆抗血清包被的羧基磁珠表现出了较高的表面抗体结合能力,分别为34.25fg/μm2和36.73fg/μm2,明显高于甲苯磺酰胺基磁珠。五个免疫磁珠对副溶血性弧菌捕获能力的研究结果表明:在起始菌液浓度为4.32logCFU/mL时(p<0.05),两个羧基磁珠捕获率达到79%和94%,均优于甲苯磺酰胺基磁珠。采用环介导恒温扩增(loop-mediated isothermal amplification,LAMP)技术对免疫磁珠菌体细胞复合物进行体外扩增,结果表明:磁珠的存在并未影响对菌体细胞的后续分子检测。本研究分析比较了不同免疫磁珠的捕获能力,得到羧基磁珠对副溶血性弧菌的捕获能力比甲苯磺酰胺基磁珠强,直接法和间接法偶联方式对免疫磁珠的富集捕获能力无影响。苏晨曦 孙晓红 卢瑛 赵勇 Vivian C H Wu 潘迎捷 2012食品工业科技2012,33,17:8
15Pharmacological approaches promoting stem cell- based therapy following ischemic stroke insults显示文摘击能导致长期的神经病学的赤字。成年神经发生,在在整个生活的大脑的不同区域的新生的神经原的连续产生,被看作了 appoaches 之一恢复神经病学的功能追随者 ischemic 击。然而,导致局部缺血的自发的神经发生不是 suffcient,这样基于房间的治疗,包括的灌输的外长的干细胞或帮助受伤大脑的修理的刺激内长的干细胞,在众多的动物实验被学习了,一些驾驶临床的试用。当时神经病学的功能上的基于房间的治疗的效果在在使随机化的控制试用未经证实的恢复遗体期间,药理学代理人被管理了帮助基于房间的治疗。在这评论,我们总结了导致局部缺血的神经发生和干细胞的限制移植,以及可以提高基于房间的治疗的功效的药的潜在的 proneuroregenerative 效果。明确地,我们讨论了提高增长,移植,区别,幸存和新生的神经原的功能连接的药,它可以恢复 neurobehavioral 功能并且在击病人改进结果。Shu-zhen ZHU Vivian SZETO Mei-hua BAO Hong-shuo SUN Zhong-ping FENG 2018Acta Pharmacologica Sinica2018,39,5:8
16摄入石墨烯量子点的家蚕可直接吐出力学性能增强的蚕丝(英文)显示文摘家蚕蚕丝具有细腻、光鲜以及优良的力学特性,因而在诸多领域中都有广泛应用.许多科学家对提高家蚕蚕丝力学性能的研究非常感兴趣.本工作中,我们通过血管注射的方式给家蚕幼虫注入了石墨烯量子点(GQDs),并且得到了力学性能增强的蚕丝. GQDs可通过淋巴循环进入到家蚕的丝腺器官并影响家蚕的纺丝过程.研究发现,当家蚕的GQDs摄入量为0.6μg/头时,家蚕蚕丝的断裂强度、断裂伸长率以及韧性模量可分别增强到原来的2.74, 1.33和3.62倍.广角X射线散射(WAXS)结果表明GQDs-蚕丝中的β-折叠纳米晶体的尺寸比起空白蚕丝有所降低,红外光谱结果表明GQDs限制了丝素蛋白中无规则卷曲或者α-螺旋结构向β-折叠结构的构象转变.β-折叠结构的尺寸及含量的变化可能是引起蚕丝力学性能增强的原因所在.我们还对GQDs的毒性以及单头家蚕摄入GQDs的安全限进行了评估,结果发现家蚕摄入GQDs的上限为30.0μg/头.使家蚕直接摄入GQDs获得力学性能增强的蚕丝的方法为生产高强度蚕丝提供了一种有潜力的途径.马琳 Maxwell Akologo Akurugu Vivian Andoh 刘海燕 宋江超 武国华 李龙 2019Science China Materials2019,62,2:8
17Liver transplantation:Fifty years of experience显示文摘Since 1963,when the first human liver transplantation(LT)was performed by Thomas Starzl,the world has witnessed 50 years of development in surgical techniques,immunosuppression,organ allocation,donor selection,and the indications and contraindications for LT.This has led to the mainstream,wellestablished procedure that has saved innumerable lives worldwide.Today,there are hundreds of liver transplant centres in over 80 countries.This review aims to describe the main aspects of LT regarding the progressive changes that have occurred over the years.We herein review historical aspects since the first experimental studies and the first attempts at human transplantation.We also provide an overview of immunosuppressive agents and their potential side effects,the evolution of the indications and contraindications of LT,the evolution of survival according to different time periods,and the evolution of methods of organ allocation.Alice Tung Wan Song Vivian Iida Avelino-Silva Rafael Antonio Arruda Pecora Vincenzo Pugliese Luiz Augusto Carneiro D'Albuquerque Edson Abdala 2014World Journal of Gastroenterology2014,20,18:8
18Quantitative structure-activity relationships of antimicrobial fatty acids and derivatives against Staphylococcus aureus显示文摘Fatty acids and derivatives(FADs)are resources for natural antimicrobials.In order to screen for additional potent antimicrobial agents,the antimicrobial activities of FADs against Staphylococcus aureus were examined using a microplate assay.Monoglycerides of fatty acids were the most potent class of fatty acids,among which monotridecanoin possessed the most potent antimicrobial activity.The conventional quantitative structure-activity relationship(QSAR)and comparative molecular field analysis(CoMFA)were performed to establish two statistically reliable models(conventional QSAR:R2=0.942,Q 2 LOO=0.910;CoMFA:R 2=0.979,Q 2=0.588,respectively).Improved forecasting can be achieved by the combination of these two models that provide a good insight into the structureactivity relationships of the FADs and that may be useful to design new FADs as antimicrobial agents.Hui ZHANG Lu ZHANG Li-juan PENG Xiao-wu DONG Di WU Vivian Chi-Hua WU Feng-qin FENG 2012Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2012,13,2:7
19高寒冰雪覆盖型和湿润亚热带型岩溶水系统碳汇强度对比显示文摘以岩性相近但气候和土地利用迥异的两个具有高分辨率水文水化学自动监测数据的岩溶水系统——湿润亚热带以土质坡地为主的岩溶水系统(贵州普定后寨岩溶水系统)和高寒冰雪覆盖下以石质坡地为主的岩溶水系统(瑞士阿尔卑斯山区的Tsanfleuron冰川岩溶水系统)作为研究对象,进行岩溶作用碳汇强度对比研究。结果发现,后寨岩溶水系统的[HCO3-]年均值为222mg/L,而Tsanfleuron冰川岩溶水系统的[HCO3-]年均值仅为131mg/L,表明湿润亚热带岩溶水系统具有较高的[HCO3-]特征。然而,湿润亚热带岩溶水系统的碳汇强度(60.82t/(km2·a))与Tsanfleuron冰川岩溶水系统的碳汇强度(59.06t/(km2·a))相当。冰川岩溶水系统同样具有较高岩溶作用碳汇强度的原因主要是在全球变暖的背景下,冰川退缩加剧,冰川固体水库水量释放增多,致使冰川岩溶水系统径流量显著增加效应超出因稀释作用而产生的[HCO3-]降低效应,进而使得山岳冰川岩溶水系统的碳汇强度增大。这也暗示着随着某些冰川融化,径流量逐渐减小将使岩溶作用碳汇强度降低。曾成 赵敏 杨睿 刘再华 Vivian Gremaud Nico Goldscheider 2011气候变化研究进展2011,7,3:7
20针刺治疗经前期综合征的临床疗效和安全性评价显示文摘目的:评价各种针刺方法治疗经前期综合征的有效性和安全性。方法:通过电子和手工两种方式,对CochraneLibrary、CENTRAL、MEDLINE、EMBASE、中文生物医学文献数据库(CBM)、中国期刊全文数据库(CNKI)等中英文数据库,相关学术会议论文汇编及文章的参考文献进行检索,纳入评价针刺或针刺合并其他疗法治疗经前期综合征的临床疗效的前瞻性对照试验。结果:8个对照试验符合纳入标准,纳入人数从61人到225人,共计807人。其中7个研究的无效率提示针刺与其他方法治疗经前期综合征的疗效差异有统计学意义,并且疗效优于对照组,1个研究的无效率提示针刺和西药的疗效差异无统计学意义。所有研究均未报道不良事件的发生。结论:针刺可有效地治疗经前期综合征,其有效性和安全性尚需更多更高质量的RCTs来加强证据的强度。于金娜 刘保延 刘志顺 Vivian Robinson 2005中国针灸2005,25,6:7
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