维普中文期刊产品整合服务
82425篇 您的检索式:作者名="JLS"
    题名 作者 年代 出处 被引量
1Design of a new dynamical core for global atmospheric models based on some efficient numerical methods显示文摘A careful study on the integral properties of the primitive hydrostatic balance equations for baroclinic atmosphere is carried out, and a new scheme todesign the global adiabatic model of atmospheric dynamics ispresented. This scheme includes a method of weighted equal-areamesh and a fully discrete finite difference method with quadraticand linear conservations for solving the primitive equationsystem. Using this scheme, we established a new dynamical corewith adjustable high resolution acceptable to the availablecomputer capability, which can be very stable without anyfiltering and smoothing. Especially, some important integralproperties are kept unchanged, such as the anti-symmetries of thehorizontal advection operators and the vertical convectionoperator, the mass conservation, the effective energy conservationunder the standard stratification approximation, and so on. Somenumerical tests on the new dynamical core, respectively regardingits global conservations and its integrated performances inclimatic modeling, incorporated with the physical packagesfrom the Community Atmospheric Model Version 2 (CAM2) of NationalCenter for Atmospheric Research (NCAR), are included.WANG Bin, WAN Hui, Jl Zhongzhen, ZHANG Xin, YU Rucong, YU Yongqiang & LIU HongtaoState Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China Department of Computational Mathematics, Academy of Mathematics and System Sciences, Peking University, Beijing 100871, China 2004Science China Mathematics2004,47,z1:92
2一个定量植物吸收土壤重金属的原理模型显示文摘本文根据土壤重金属向植物体转移的机理,提出了一个土壤-植物系统中元素解吸、迁移、吸收的联合数学模型,推导出植物吸收量与土壤溶液浓度、缓冲能力系数、扩散系数、根系总长度、平均半径、植物蒸腾量、生长时间等参数的定量关系式。用该模型计算的植物吸镉量与盆栽黑麦草实际吸镉量之间具有很高的相关性和较好的准确度。吴启堂 Morel,JL 1994土壤学报1994,31,1:143
3北京市社区妇女人乳头瘤病毒感染率及其对HPV和疫苗认知情况的调查分析显示文摘[目的]评估北京市社区妇女人乳头瘤病毒(HPV)的感染率;调查社区人群对HPV的认知情况以及对HPV疫苗接种的态度。[方法]采用横断面调查方法,对北京市展览路社区15 ̄54岁女性进行HPV认知和流行病学问卷调查,并留取了宫颈脱落细胞或会阴部标本进行HPV DNA检测。[结果]1013名女性接受了问卷调查,832例HPV DNA检测结果纳入了统计学分析。HPV总检出率为15.38%,高、低危型HPV感染率分别为13.34%和3.25%,同时感染高、低危型HPV的检出率为1.20%。1013名调查对象中有30.7%听说过HPV,其中51.78%知道HPV感染与宫颈癌有关;HPV的知晓率与年龄和教育程度有关(P<0.05);经过简单宣教后,75.91%愿意接种HPV疫苗。[结论]北京市社区妇女HPV现患率较高,对HPV的知晓率也较高。开展公众健康教育,提高人群的认识水平是疫苗计划获得成功的关键因素。李静 屠铮 赵超 宋丹 王鹤 崔淑慧 乔友林 魏丽惠 JL Belinson 2008中国肿瘤2008,17,3:89
4Community structure of ammonia-oxidizing bacteria under long-term application of mineral fertilizer and organic manure in a sandy loam soil显示文摘Chu HY Fujii T Morimoto S Lin XG Yagi K Hu JL Zhang JB 2007中国生物学文摘2007,21,6:77
5Oncofetal antigen glypican-3 as a promising early diagnostic marker for hepatocellular carcinoma显示文摘BACKGROUND:Hepatocellular carcinoma (HCC) is characterized by a multi-cause,multi-stage and multi-focus process of tumor progression.Its prognosis is poor and early diagnosis is of utmost importance.This study was undertaken to investigate the dynamic expression of oncofetal antigen glypican-3 (GPC-3) and GPC-3 mRNA in hepatocarcinogenesis and to explore their early diagnostic value for HCC.METHODS:A hepatoma model was induced in male Sprague-Dawley rats with 0.05% 2-fluorenylacetamide and confirmed by hematoxylin and eosin staining and gamma-glutamyltransferase (GGT) expression.Total RNA was purified and transcribed into cDNA by reverse transcription.Fragments of the GPC-3 gene were amplified by nested RT-PCR,and confirmed by sequencing.GPC-3 was analyzed by immunohistochemistry,Western blotting or ELISA.RESULTS:Positive GPC-3 expression showed as brown granule-like staining localized in the cytoplasm.Histological examination of hepatocytes revealed three morphological stages of granule-like degeneration,atypical hyperplasia (precancerous),and cancer formation,with a progressive increase of liver total RNA and GGT expression.The incidence of liver GPC-3 mRNA and GPC-3,and serum GPC-3 was 100%,100% and 77.8% in the HCC group,100%,100%,and 66.7% in the precancerous group,83.3%,83.3%,and 38.9% in the degeneration group,and no expression in the liver or blood of the control group,respectively.There was a positive correlation between liver GPC-3 mRNA and total RNA level (r=0.475,P<0.05) or liver GPC-3 (r=1.0,P<0.001) or serum GPC-3 (r= 0.994,P<0.001).CONCLUSION:Abnormal oncofetal antigen GPC-3 and GPC-3 mRNA expression in hepatocarcinogenesis may be promising molecular markers for early diagnosis of HCC.Research Center of Clinical Medicine,Affiliated Hospital of Nantong University,Nantong 226001,China (Yao M,Yao DF,Qiu LW,Wu W,Sai WL,Yang JL and Zhang HJ) Department of Oncology,Yancheng First People’s Hospital,Yancheng 224001,China (Bian YZ) Department of Oncology,Second Affiliated Hospital,Nanjing Medical University,Nanjing 210011,China (Zhang CG) 2011Hepatobiliary & Pancreatic Diseases International2011,10,3:51
6Structural pattern of eastern Himalayan syntaxis in Namjagbarwa and its formation process显示文摘The structural pattern of the eastern Himalayan syntaxis in Namjagbarwa consists of two series of structures with different styles. One series compiles the earlier ductile contractional and lateral-slip deformation system, formed by nearly north-south shortening within the syntaxis, left-lateral and right-lateral slipping along its western and eastern boundaries respectively. They were possibly produced by the indentation of the Indian continent into Asian continent after India-Asia collision. The peak deformation-metamorphic ages in these structures are 62-60 Ma, ~23 Ma and ~13 Ma. The other series is composed of ductile-brittle normal faults distributing concentrically and dipping toward the outsides of Namjagbarwa Peak. They were probably the collapse structures caused by rapid uplift in a later time and the beginning ages for the normal faulting are about 7.3-6.3 Ma.ZHANG Jinjiang, Jl Jianqing, ZHONG Dalai, DING Lin & HE Shundong1. Department of Geology, Peking University, Beijing 100871, China 2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Correspondence should be addressed to Zhang Jinjiang (email: zhjj@pku.edu.cn) 2004Science China Earth Sciences2004,47,2:34
7聚合酶链反应检测乙型肝炎患者肝外组织中的乙型肝炎病毒DNA显示文摘应用巢式聚合酶链(PCR)技术对18例石蜡包埋的胆囊、肾、脾、肾上腺、心、睾丸、胰腺及肝脏组织的乙型肝炎病毒(HBV)DNA进行了检测,并与其免疫组化及原位杂交方法作比较。二组引物检测的结果表明:肝组织中均有HBV感染,其中5例有HBV的复制。肝外组织中HBV检出率分别为胆囊85.7%、75.0%、肾72.7%、肾上腺66.7%、心脏55.6%、睾丸55.6%和胰腺54.5%,但均未检测出HBV的复制,PCR检测发现与免疫组化及原位杂交结果基本一致。HBV可以感染肝外组织但并不在这些组织中复制的发现可以解释受感染的肝外组织可以作为肝外感染源,但并不引起这些脏器出现明显的病理变化。郎振为 闫惠平 黄德在 王健 吴和 Zhang JL Perry A Byrne SK Stiver GH 1994中华内科杂志1994,33,4:33
8最新AD研究用诊断标准:IWG-2标准显示文摘在过去的8年中,国际工作组织(IWG)和美国国立老化研究院-阿尔茨海默协会(NIA-AA)建立了阿尔茨海默病(AD)诊断标准,它能更好地定义AD的临床表型,整合了生物标记物于诊断流程中,并覆盖了疾病的全程。本意见书充分地权衡了IWG标准的优缺点,建议改进诊断框架。依据这些改进,AD的诊断变得简单,只要有恰当的AD临床表型(典型或不典型)和与AD的病理相一致的病理生理学生物标志物出现。我们认为疾病的下游的定位性生物标志,如容积性磁共振成像(MRI)和氟脱氧葡萄糖-正电子发射型计算机断层成像(FDG-PET)等,适合更好地测量和监测疾病过程。本文还详述了非典型性AD、混合性AD和AD临床前期的特异诊断标准。陈刚 曹雯炜 俞羚 糜建华 Dubois B Feldman HH Jacova C Hampel H Molinuevo JL Blennow K DeK osky ST Gauthier S Selkoe D Bateman R Cappa S Crutch S Engelborghs S Frisoni GB Fox NC Galasko D Habert MO Jicha GA Nordberg A Pasquier F Rabinovici G Robert P Rowe C Salloway S Sarazin M Epelbaum S de Souza LC Vellas B Visser PJ Schneider L Stern Y Scheltens P Cummings JL 2014神经病学与神经康复学杂志2014,11,3:31
9醋白肉眼观察试验在宫颈病变筛查中的价值显示文摘目的以宫颈细胞学、阴道镜检查及活检的诊断结果为标准,评价宫颈醋白肉眼观察试验(vision inspection with acetic acid,VIA)在宫颈病变筛查中的价值。方法2006年6月~7月对北京市展览路社区的790位20~54岁有性生活妇女进行宫颈病变筛查。采取每名妇女的宫颈脱落细胞,留做薄层液基细胞学(LCT)检测,然后应用5%醋酸涂抹法,进行宫颈醋白肉眼观察试验(VIA),VIA阳性者行阴道镜检查及活检病理检查;VIA阴性者若宫颈细胞学检测结果异常,再行阴道镜检查及活检病理检查。结果最终有783人纳入试验诊断效果评价分析,总共取了71例活检,病理组织学检查结果显示,宫颈早期浸润癌1例,CINⅢ4例,CINⅡ3例,CINⅠ12例。VIA方法筛查CINⅡ及以上宫颈病变和宫颈癌的灵敏度为62.5%,特异度为95.9%,阳性预测值为13.5%,阴性预测值为99.6%。结论醋白肉眼观察试验筛查宫颈病变的效率接近传统巴氏涂片,但因其方便快捷、价格低廉,在经济不发达地区或低收入人群中有一定应用价值,但是需要注意漏诊和过度治疗问题。屠铮 李静 赵超 宋丹 崔淑慧 章文华 乔友林 Belinson JL 魏丽惠 2007中国妇产科临床杂志2007,8,2:25
10Effective treatment of manganese-induced occupational parkinsonism with p-aminosalicylic acid: a case of 17-year follow-up study.显示文摘Jiang YM Mo XA Du FQ Fu X Zhu XY Gao HY Xie JL Liao FL Pira E Zheng W 2006中国生物学文摘2006,20,8:23
11聚合酶链反应检测乙型肝炎患者心肌组织中 HBV DNA显示文摘应用巢式聚台酶链反应(PCR)技术检测了18例乙型肝炎(乙肝)患者石蜡包埋心、肝组织中的HBVDNA,并与其免疫组化及原位杂交结果作了比较。二组引物检测的结果表明:在肝组织中均有HBV感染,其中5例有HBV复制。心肌组织HBVDNA的检出率为55.6%,不存在HBV的复制。心脏病理检查可见一些非特异性改变,如脂变、水肿和纤维素样坏死等。病理变化与心电图、临床症状、体征及PCR检测结果无相关件。以上结果提示:乙肝患者心脏出现的一些病变可能是由于沉积于心肌内的免疫复合物介导损伤的结果。郎振为 阎惠平 李俊强 Zhang JL Perry A Byrne SK Stiver GH 1994中华传染病杂志1994,12,1:19
12Codon 249 mutations of p53 gene in development of hepatocellular carcinoma显示文摘Codon249mutationsofp53geneindevelopmentofhepatocelularcarcinomaPENGXiaoMou,PENGWenWeiandYAOJiLuSubjectheadingsliverneopla...Peng, XM Peng, WW Yao, JL 1998World Journal of Gastroenterology1998,4,2:18
13A new method for judging the computational stability of the difference schemes of nonlinear evolution equations显示文摘For the non-conservative difference schemes of nonlinear evolution equations with aperiodic boundary conditions, taken one-dimensional nonlinear advection equation as an example, a new method for judging the computational stability is given. It is proved to be practical and effective through several numerical examples. The stability criteria obtained by this method are really the necessary conditions of computational stability.LIN Wantao Jl Zhongzhen WANG Bin YANG Xiaozhong 2000Chinese Science Bulletin2000,45,15:18
14基于流行病学、空间、基因组学数据的中国上海内部人口流动与结核病传播动力学研究显示文摘中国国内人口大规模从农村向城市流动,为结核病控制工作带来了新的挑战。2018年7月的《The Lancet. Infectious diseases》刊载了一项研究,旨在将基因组数据、空间数据和流行病学数据结合起来,描述有大量流动人口的城市环境中结核病的传播动力学特征。研究者们针对上海松江地区的培养阳性结核分枝杆菌开展了一项基于人群的研究。采用全基因组测序法,对具有相同"数目可变串联重复序列(VNTR)"组合的结核分枝杆菌表观基因簇进行了区分,并分析了居住距离与基因学成簇的结合分枝杆菌感染风险之间的关系。Yang C Lu L Warren JL 2018疾病监测2018,33,8:17
15Curcumin protects PC12 cells against 1-methyl-4-phenylpyridinium ion-induced apoptosis by bcl-2-mitochondria-ROS-iNOS pathway.显示文摘Chert J Tang XQ Zhi JL Cui Y Yu HM Tang EH Sun SN Feng JQ Chen PX Chen J 2006中国生物学文摘2006,20,10:16
16非维生素K拮抗与维生素K拮抗口服抗凝剂与脑出血患者住院死亡之间的关系显示文摘尽管非维生素K拮抗口服抗凝剂(non-vitamin K antagonist oral anticoagulants, NOACs)越来越多地应用于预防血栓栓塞性疾病,但关于NOACs相关性脑出血的数据仍然有限。刘青 叶鹏 Inohara T Xian Y Liang L Matsouaka RA Saver JL Smith EE Schwamm LH Reeves MJ Hernandez AF Bhatt DL Peterson ED Fonarow GC 2018中华高血压杂志2018,26,2:16
17溶栓时间(入院到用药时间)的延迟及其对脑卒中治疗时间与预后的影响显示文摘尽管美国心脏协会/美国脑卒中协会关于脑卒中的治疗均提出了倡议,大量急性缺血性脑卒中患者仍然在到达就诊60min后才开始启动组织型纤溶酶原激活剂(阿替普酶)溶栓治疗。该研究旨在描述延迟的原因及其与患者预后之间的关系。刘莉 叶鹏 Kamal N Sheng S Xian Y Matsouaka R Hill MD Bhatt DL Saver JL Reeves MJ Fonarow GC Schwamm LH Smith EE 2017中华高血压杂志2017,25,4:15
18MRI-determined fat content of human liver,pancreas and kidney显示文摘AIM:To assess and correlate the lipid content of various organs in obese subjects and in persons with a normal body weight.METHODS:Magnetic resonance spectroscopy and a previously validated gradient echo magnetic resonance imaging method with Dixon's two point technique were used in this study to quantify fat in liver,pancreas as well as kidney.RESULTS:In 36 volunteers with body mass index(BMI) ranging from 20.0 to 42.9 kg/m2,the median fat content of liver,pancreas and kidney was 2.3%(interquartile range:0.2%-7.8%),2.7%(1.0%-6.5%) and 0.7%(0.1%-1.4%),respectively.BMI and subcutaneous fat correlated significantly with liver and pancreas fat content.We show for the first time the significant correlation of liver and pancreas fat content in healthy controls(r = 0.43,P < 0.01).These observations are related to body weight as measured by BMI and the amount of subcutaneous fat.Kidney fat content is very low and correlates with none of the other fat depots.CONCLUSION:Renal lipid accumulation,unlike the coupled accumulations of fat in liver and pancreas,is not observed in obese subjects.Unlike suggestions made in previous studies,renal lipid accumulation appears not to be involved in the pathogenesis of renal disease in humans.Paul E Sijens Mireille A Edens Stephan JL Bakker Ronald P Stolk 2010World Journal of Gastroenterology2010,16,16:14
19Defects in Mesenchymal Stem Cell Self-Renewal and Cell Fate Determination Lead to an Osteopenic Phenotype in Bmi-1 Null Mice(摘要)显示文摘Zhang, HW Ding, J Jin, JL Guo, J Liu, JN Karaplis, A Goltzman, D Miao, DS 2010南京医科大学学报(自然科学版)2010,30,8:13
20醌氧化还原酶1抑制剂双香豆素促进HBV X蛋白降解进而抑制cccDNA转录的机制研究显示文摘【据Journal of Hepatology2021年3月报道】题:醌氧化还原酶1抑制剂双香豆素促进HBV X蛋白降解进而抑制ccc DNA转录的机制研究(作者Cheng ST等)HBV ccc DNA在肝细胞核内持续稳定的存在,被认为是HBV感染慢性化、抗病毒治疗无法彻底清除以及停药后肝炎复发的最主要原因。HBV X蛋白(HBx)对HBV ccc DNA的转录过程发挥关键作用;促进HBx降解,则可能抑制ccc DNA转录。因此,开发靶向HBx的小分子化合物是达到'ccc DNA沉默清除'这一重要目标的可能途径。陈娟 黄爱龙 CHENG ST HU JL REN JH 2021临床肝胆病杂志2021,37,4:12
返回顶部 每页显示:
共4122页 首页 上一页 第1页 下一页 末页 /4122 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费