维普中文期刊产品整合服务
434篇 您的检索式:作者名="LEO J"
    题名 作者 年代 出处 被引量
1变荷载下饱和软黏土一维大应变固结解析理论显示文摘基于软黏土一维非线性大应变固结基本理论,建立了能考虑荷载变化、土层自重等因素影响的拉格朗日坐标下以超静孔压u为变量的一维大应变固结控制方程,并通过对土体压缩性和渗透性的假定获得了方程的解析解。基于此解,分析了单级等速加荷条件下软黏土一维大应变固结性状。从中可见,大应变固结过程中土体变形的发展要快于超静孔压的消散;荷载增大,超静孔压消散趋慢;加荷速率越大,土体固结越快;考虑土层自重影响时孔隙比的分布更为合理。此外,本文的解析解也可用于验证各种大应变固结数值解法的正确性。谢康和 郑辉 C J Leo 2003水利学报2003,34,10:19
2Anatomically realistic multiscale models of normal and abnormal gastrointestinal electrical activity显示文摘One of the major aims of the International Union of Physiological Sciences (IUPS) Physiome Project is to develop multiscale mathematical and computer models that can be used to help understand human health. We present here a small facet of this broad plan that applies to the gastrointestinal system. Specifically, we present an anatomically and physiologically based modelling framework that is capable of simulating normal and pathological electrical activity within the stomach and small intestine. The continuum models used within this framework have been created using anatomical information derived from common medical imaging modalities and data from the Visible Human Project. These models explicitly incorporate the various smooth muscle layers and networks of interstitial cells of Cajal (ICC) that are known to exist within the walls of the stomach and small bowel. Electrical activity within individual ICCs and smooth muscle cells is simulated using a previously published simplified representation of the cell level electrical activity. This simulated cell level activity is incorporated into a bidomain representation of the tissue, allowing electrical activity of the entire stomach or intestine to be simulated in the anatomically derived models. This electrical modelling framework successfully replicates many of the qualitative features of the slow wave activity within the stomach and intestine and has also been used to investigate activity associated with functional uncoupling of the stomach.Leo K Cheng Rie Komuro Travis M Austin Martin L Buist Andrew J Pullan 2007World Journal of Gastroenterology2007,13,9:3
3组群随机试验在伤寒疫苗效果观察中的应用研究显示文摘目的 用组群随机试验实现伤寒Vi疫苗效果观察的研究设计和实施应用。方法 采用组群随机试验方法确定试验组和对照组所需样本量 ,并组织实施大规模疫苗接种 ,在试验组接种伤寒Vi疫苗、对照组接种流脑疫苗。结果 根据组群随机试验方法计算共需要观察对象为 96 12 1人 ,分为 10 8个组群。根据组群大小、地理位置 (城乡 )及性质 (学校、机关、厂矿、人口特征 )分层配对 ,确定试验组分为 5 3个组群共 4 4 0 5 4人 ,对照组为 5 4个组群共 4 84 2 2人。对两组间各主要混杂因子 (年龄、性别、居住地点、主要人群的经济收入、受教育程度、主要职业 )等进行分析 ,发现两组之间总体相差不大 ,具有较好的均衡性与可比性。结论 组群随机抽样法应用于大规模疫苗效果观察试验 ,能较好地控制组间混杂因子 ,使干预的实际效果得到科学的评价 ;实施也比较简单 ,被干预对象容易接受 ,可行性高。董柏青 杨进 唐振柱 杨宏徽 曾竣 张杰 王鸣柳 梁贵臣 司国爱 李翠云 梁大斌 廖和壮 Rion Leo nOchiai Ali Mohammad Camilo J Acosta John Clemens 2005中华流行病学杂志2005,26,2:3
4DNA polymorphism of HLA class II genes in primary biliary cirrhosis显示文摘Niels Morling Kim Dalhoff Lars Fugger J?rgen Georgsen Bodil Jakobsen Leo Ranek Niels ?dum Arne Svejgaard 1992Immunogenetics1992,,2:2
5Biochar and the Nitrogen Cycle: Introduction显示文摘Clough Tim J Condron Leo M 2010Journal of Environmental Quality2010,,4:2
6Seismic monitoring of a CO2 flood at Weyburn field,Saskatchewan, Canada: Demonstrating the robustness of time-lapse seismology显示文摘 Davis T L Brown Leo 2002Expanded Abstracts of 72nd Annual Internat SEG Mtg2002,,:1
73 ' ,4' -dihydroxyflavonol re- duces superoxide and improves nitric oxide function in diabetic rat mesenteric arteries显示文摘Leo C H Hart J L Woodman 0 L 2011PLoS One2011,6,20:1
8Mesenchymal stem cells in tissue engineering 显示文摘Leo A J Grande DA 2006Cells Tissues Organs2006,183,3:1
9Treatment outcome of mineral trioxide aggregate: repair of root perforations-long-term results 显示文摘Mente J Leo M Panagidis D 2014J Endod2014,40,6:1
10Field study of the flow behind single and double row herbaceous windbreaks显示文摘Boldes U Colman J Leo J M D 2001Journal of Wind Engineering and Industrial Aerodynamics2001,89,:1
11Biochar and the nitrogen cycle:Introduction显示文摘Tim J C Leo M C 2010Journal of Environmental Quality2010,39,4:1
12Generalized Minimax inequalities for set-valued mappings 显示文摘Li S J Chen G Y Leo K L 2003J Math Anal Appl2003,281,:1
13Treatment outcome of mineral trioxide aggregate:repair of root perforations-long-term results显示文摘Mente J Leo M 2014J Endod2014,40,6:1
14Treatment outcome of mineral trioxide aggregate in open apex teeth 显示文摘Mente J Leo M Panagidis D 2013J Endod2013,39,1:1
15Maternal anthropometric factors and risk of primary cesarean delivery显示文摘Shepard M J Saftlas AF Leo - Summers L 1998Am J Public Health1998,88,10:1
16IGF-I bioactivity in an Elderly Population: Relation to Insulin Sensitivity, Insulin levels,and the Metabolic Syndrome显示文摘Michael P Brugts Cornelia M van Duijn Leo J Hofland 2010Diabetes2010,59,2:1
17A polysorbate-based non-ionic surfactant can modulate loading and release of β-lactoglobulin entrapped in multiphase poly(d ,1-Lacticeco-glycolide) microspheres显示文摘Rojas J Pinto-Alphandary H Leo E 1999Pharm Res1999,16,2:1
18Infrared spectroscopy studies on stability of dimethyl sulfoxide for application in Li-air battery显示文摘Mozhzhukhina N Mrndez De Leo L P Calvo E J 2013The Journal of Physical Chemistry C2013,117,18:1
19Biochar Incorporation into Pasture Soil Suppresses in situ Nitrous Oxide Emissions from Ruminant Urine Patches显示文摘Taghizadeh-Toosi Arezoo Clough Tim J Condron Leo M Sherlock Robert R Anderson Craig R Craigie Robin A 2011EN2011,,2:1
20The prognostic significance of thrombocytosis in epithelial ovarian carcinoma显示文摘Andrew J Li Alison C Madden Ilana Cass Ronald S Leuchter Leo D Lagasse Beth Y Karlan 2003Gynecologic Oncology2003,,1:1
返回顶部 每页显示:
共22页 首页 上一页 第1页 下一页 末页 /22 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