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| 1 | 高掺量粉煤灰高延性水泥基复合材料的制备和性能显示文摘高延性水泥基复合材料(high ductility cementitious composites,HDCC)是一种具有应变硬化、多缝开裂和高延性等特性的新型纤维增强水泥基复合材料,其材料设计必须取得基体韧度、界面黏结和纤维特性三者的最优组合,因此,HDCC的制备必须优选原材料和优化配合比,以取得最优的材料制备技术。从配合比设计入手,研究了粉煤灰含量、胶砂比等对HDCC力学性能的影响,优化了特定材料下的材料制备技术。结果表明:粉煤灰含量、胶砂比和养护条件对HDCC的拉伸性能均具有较大的影响。随着粉煤灰掺量的增大,砂含量的降低,拉伸应变增大。当砂含量较高时,基体开裂韧度较高,基体的极限拉伸应力下对应的极限拉伸应变较小,然而随着应力的下降,复合材料仍然能维持相当大的应变。 | 庞超明 LEUNG C K Y 孙伟 | 2009 | 硅酸盐学报2009,37,12: | 30 |
| 2 | 隧道开挖对周围土体及桩基影响的试验研究显示文摘通过离心机试验研究了粘土中隧道开挖引起的土体瞬时和长期沉降.对不同的隧道与桩间距情况进行了3组离心机试验,研究隧道开挖对桩基的瞬时和长期影响.试验结果表明,高斯曲线法计算的土体瞬时沉降与试验值比较吻合,而计算的长期沉降低估了地表沉降的影响范围.隧道开挖引起的桩身最大轴力和弯矩都发生在隧道起拱线附近,而且桩基反应都是随着隧道与桩间距的增加而减小.随着时间的增加,地表沉降、桩身弯矩和侧向变形都有显著增加,所以隧道开挖的长期影响不容忽视. | 孙庆 杨敏 冉侠 Leung C F | 2011 | 同济大学学报(自然科学版)2011,39,7: | 29 |
| 3 | Determinants of postem-bolization syndrome after hepatic chemoembolization显示文摘 | Leung DA Goin JE Sickles C | 2001 | J Vasc Interv Radiol2001,12,: | 6 |
| 4 | Inhibition of the G9a/GLP histone methyltransferase complex modulates anxiety-related behavior in mice显示文摘Epigenetic 基因规定畸形包括精神分裂症和消沉在各种各样的 neuropsychiatric 混乱,以及在心情和焦虑的规定被含有。另外, epigenetic 机制涉及精神病学的药的行动。当前的 anxiolytic 药有新药的重要缺点,和开发被保证。二蛋白质, G9a (也作为 EHMT2 或 KMT1C 知道) 并且 GLP (象 G9a 一样蛋白质,也作为 EHMT1 或 KMT1D 知道) ,它甲醇化物离氨酸 9 histone H3 (H3K9 ) ,能正在答应 anxiolytic 目标。G9a 的出生后的基因大美人减少焦虑相关的行为,与由过去常对待焦虑(amitriptyline, imipramine 和 paroxetine ) 的一些药的 G9a 层次的减小一致。相反地,在有 GLP haplodeficiency 的老鼠有增加的像焦虑的行为。我们寻求了决定是否 G9a/GLP, UNC0642 和 A-366 的二个药理学禁止者,将有类似的效果到基因 G9a/GLP 不足。当予成年老鼠以时,我们发现有任何一个化合物的 G9a/GLP 抑制减少了像焦虑的行为,与在大脑的减少的 H3K9 methylation 一起。相反,到这些的暴露从胚胎的白天加重(E9.5 ) 9.5 增加了像焦虑的行为直到出生并且减少在成人生活的社会相互作用,当 H3K9 methylation 在在成年老鼠的大脑的正常层次时。这些调查结果增强 G9a/GLP 在大脑开发的不同阶段在像焦虑的行为上有不同效果的基因证据,并且建议指向这条 histone methyltransferase 小径能为开发新 anxiolytic 药是有用的。这些数据也建议在 utero 的抗抑郁剂暴露能在成人生活有否定效果,并且这些效果的进一步的调查被保证。 | Dong-yao WANG Joel KOSOWAN James SAMSOM Laura LEUNG Kai-lai ZHANG Ying-xiang LI Yan XIONG Jian JIN Arturas PETRONIS Gabriel OH Albert H C WONG | 2018 | Acta Pharmacologica Sinica2018,39,5: | 4 |
| 5 | 染料敏化分解水制氢技术进展显示文摘介绍了染料敏化分解水制氢的基本原理。综述了染料分子的选取,使用氧化还原调节剂的机理和研究进展。指出染料分子对光谱的吸收特性,激发态染料分子能级与半导体导带的相对位置,染料分子与半导体的吸附情况,表面键合强度直接影响对光子的吸收,电子的注入,从而影响产氢量。此外,I-/I3-作为氧化还原调节剂可有效还原染料分子,实现持续产氢。最后提出了染料敏化分解水制氢的间歇式反应器结构,以及通过选择用于敏化的半导体来提高产氢率的思路。 | 倪萌 LEUNG MICHAEL K H LEUNG DENNIS Y C | 2006 | 电源技术2006,30,10: | 3 |
| 6 | 评估内燃机隔振系统功率流传递的一种新模型(英文)显示文摘为准确评估弹性复杂隔振基础条件下振动内燃机的功率流传递水平,采用Mindlin板替代传统的Kirchihoff薄板,建立了一种涵盖多种隔振基础形式的普适模型。运用子结构技术和变分理论,推导了隔振系统的控制方程以及传递到较厚甚至不同配置方式的各向异性复杂梁式基础的功率流。与基于各向同性薄板基础的传统模型相比较,研究了普适隔振系统功率流的传递特性。仿真研究表明,所提模型是有效的,可得到比传统模型更加准确的结果。 | 牛军川 葛培琪 林志华 梁以德 宋孔杰 LIM C W LEUNG A Y T | 2009 | 内燃机学报2009,27,1: | 3 |
| 7 | Evaluation of the string test for the detection of Helicobacter pylori显示文摘AIM: Helicobacter pylori can be diagnosed by invasive ornon-invasive tests but to obtain bacteria for culture andantibiotic susceptibility testing, an upper GI endoscopy isoften required. The string test may be a minimally-invasivealternative method of obtaining H. pylori samples. This studyevaluates the sensitivity and specificity of the string test inthe diagnosis of H. pylori in comparison with endoscopicmeans of diagnosis.METHODS: This was a prospective open comparative studyof patients with dyspepsia with endoscopy-based tests asgold standard (defined as a positive CLO test and antralhistology). Fasting patients swallowed the encapsulated-string(Entero-test Hp), which was withdrawn after 1 hour. Thegastric juice from the string was plated onto H. pylori-selectivemedia for culture. Helicobacter pylori was identified by typicalcolony morphology, gram stain and biochemical test results.RESULTS: Thirty dyspeptic patients were recruited of whom21 (70 %) were positive for H. pylori according to the goldstandard. The sensitivity, specificity, positive predictive value,and negative predictive value for the string test were 38 %,100 %, 100 % and 41% respectively, and for endoscopicbiopsies 81%, 100 %, 100 %, 69 % respectively (P=0.004).Logistic regression showed that only abundant growthdensity from endoscopic biopsy cultures to be a predictor ofa positive string test (P=0.018).CONCLUSION: The string test is an alternative method toendoscopy in obtaining H. pylori but has a low sensitivitycompared to endoscopic biopsies. | Rupert WL Leong Ching C Lee Thomas KW Ling WaiK Leung Joseph JY Sung | 2003 | World Journal of Gastroenterology2003,9,2: | 3 |
| 8 | 危重患者抗菌药物持续静脉滴注或延长滴注时间:系统综述和meta分析显示文摘危重患者抗菌药物持续静脉滴注或延长滴注时间:系统综述和meta分析
摘译:本研究对入住ICU危重患者使用以药物代谢动力学为基础的方法行抗菌药物持续静脉滴注或延长静脉滴注时间,并与传统间歇性静脉滴注抗菌药物进行比较,观察包括病死率在内的各种预后变化。 | 罗勇 Chant C Leung A Frienrich J O | 2014 | 临床误诊误治2014,27,8: | 3 |
| 9 | Neural network based short-term load forecasting using weather compensation显示文摘 | Chow T W S Leung C T | 1996 | IEEE Trans on Power Systems1996,11,4: | 2 |
| 10 | Size distributions of maternal and fetal DNA in maternal plasma显示文摘 | Chan K C ZhangJ Hui A B Wong N Lau T K Leung T N | 2004 | Clin Chem2004,50,: | 1 |
| 11 | Risk factors for procedure related fetal losses after mid-trimester genetic amnio-centesis显示文摘 | KONG C W LEUNG T N LEUNG T Y et a1 | 2006 | Prenat Diagn2006,26,10: | 1 |
| 12 | Transvaginal sonography and theconservative management of spontaneous abortion 显示文摘 | Haines C J Chung T Leung DY | 1994 | Gyneeol Obstet Invest1994,37,1: | 1 |
| 13 | FRP debongding from a concrete substrate: some recent findings against conventional belief显示文摘 | LEUNG C K Y | 2006 | Cement and Concrete Composites2006,28,8: | 1 |
| 14 | Child behavior and parenting stress in Hong Kong families显示文摘 | Leung C | 2005 | Hong Kong Med J2005,11,5: | 1 |
| 15 | On the prediction of air and pollutant exchange rates in street canyons of different aspect ratios using large-eddy simulation显示文摘 | Liu Chunho Leung D Y C Barth M C | 2005 | Atmospheric Environment2005,39,90: | 1 |
| 16 | Minimally invasive plate osteosynthesis in the treatment of proximal humeral fracture 显示文摘 | Lau T W Leung F Chan C F | 2007 | Int Orthop2007,31,5: | 1 |
| 17 | Polysaccharide biological response modifiers 显示文摘 | Leung Y K Liu C Koon J C M | 2006 | Immunol Lett2006,105,: | 1 |
| 18 | Reliability analysis for rotor rubbing 显示文摘 | Zhang Y M Wen B C Leung Y T | 2002 | ASME Journal for Vibration and Acoustics2002,124,1: | 1 |
| 19 | A prospective randomized controlled trial on ureteral stenting after ureteroscopic holmium laser lithotripsy显示文摘 | CHEUNG M C LEE F LEUNG Y L | 2003 | J Urol2003,169,4: | 1 |
| 20 | Man portable power needs of the 21st century显示文摘 | Atwater T B Cygan P J Leung F C | 2000 | J Power Sources2000,91,1: | 1 |