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| 1 | 盾构隧道开挖对邻近桩基影响数值分析显示文摘经与离心试验结果对比分析,验证了应用数值模拟研究盾构隧道开挖对邻近桩基影响是可靠的。通过采用Mohr-Coulomb弹塑性屈服准则,建立三维有限元数值模型,研究软土地区盾构隧道开挖对邻近桩基的影响规律。数值模拟结果表明,开挖导致群桩中前排桩变形及内力均大于后排桩,且同排桩水平位移、弯矩和轴力沿桩身分布几乎重合;与同位置单桩相比,群桩中各桩水平位移稍大,而沉降则更小;前排桩最大弯矩与同位置单桩相差不大,而后排桩最大弯矩稍大于同位置单桩,前、后排桩最大轴力均大于同位置单桩。 | 朱逢斌 杨平 ONG C W | 2008 | 岩土工程学报2008,30,2: | 117 |
| 2 | 铅对肾上腺皮质细胞线粒体的氧化损伤显示文摘【目的】研究铅对肾上腺皮质细胞氧化应激和线粒体功能的影响 ,为了解其肾上腺皮质毒作用机制提供依据。【方法】原代分离培养豚鼠肾上腺皮质细胞 ,以 0、6 2 5、12 5、2 5、5 0、10 0 μmol/L醋酸铅 (PbAc)处理细胞 ,观察PbAc诱导肾上腺皮质细胞活性氧 (ROS)产生和线粒体损伤作用。ROS检测采用荧光分光光度法 ,线粒体膜电位 (MMP)和细胞存活状态采用Rh12 3和PI双标记、流式细胞术检测 ,细胞ATP水平采用化学发光法测定。【结果】PbAc染毒后肾上腺皮质细胞ROS形成水平随剂量增加而增加 ,具有剂量效应关系 [^y=4 16 +10 2 1× 1g(x+1) ,P <0 0 1,R2 =0 6 41];线粒体膜电位呈剂量依赖性降低 ,Rh12 3的平均荧光强度 (MFI)在 6 2 5~ 10 0 μmol/L各剂量组依次为 1 0 1,0 94,0 96 ,0 95和 0 91,与对照组(1 35 )比较具有显著性差异 (P <0 0 1) ;染毒后细胞死亡率轻度增加 ,与对照组 (1 0 2 % )比较 ,5 0 μmol/L和 10 0 μmol/L的PbAc组分别为 3 16 %和 3 40 % ,差异具有显著性 (P <0 0 5 ) ;ATP水平降低与PbAc剂量之间存在剂量效应关系 [^y =2 12 96 5 7- 5 15 92 5× 1g(x +1) ,P <0 0 1,R2 =0 5 6 8],剂量和时间对ATP水平的影响呈协同抑制作用 (P <0 0 1)。【结论】线粒体氧化应激介导肾? | 杨杏芬 庄志雄 魏青 凌莉 范瑞泉 Shen H M Ong C N | 2001 | 中山医科大学学报2001,22,1: | 8 |
| 3 | 中国社区卫生服务该怎样满足患者需求:一项全国性的代表性调查显示文摘目的中国自2009年起开展社区卫生服务,截至2014年已建成社区卫生服务中心8 669家,拥有社区卫生服务工作者30万人。然而,至社区卫生服务中心就诊的患者数并不多,因为人们对全科医生缺乏信任,但对专科医生过度依赖。方法于2015年9—12月,采用分层随机抽样法,按社区卫生服务中心在城市和郊区的分布比例(2∶1)在中国东、中、西部地区抽取样本社区卫生服务中心,并采用不同问卷对在其工作的资深临床医生和全科医生进行调查。两套问卷内容均涉及所在社区卫生服务中心的服务人口特征、开办的临床和健康教育活动情况。158例资深临床医生和3 580例全科医生对调查进行了有效应答,问卷有效应答率分别为84%和86%。结果社区卫生服务中心的中位医生数为8例、中位护士数为13例,但仅半数医生注册为全科医生,极少数护士接受过专业的全科培训。98%的社区卫生服务中心配有听诊器,97%配有血压计,但仅43%配有检眼镜,64%配有妇科检查仪器。社区卫生服务中心倾向于有选择地向部分慢性病患者提供医疗服务。全科医生每天接诊的中位患者数为12.5例。多因素分析结果显示,在举办主体为私立医院的社区卫生服务中心、配有药剂师和护士的社区卫生服务中心,全科医生的每日接诊患者数较多。结论中国拥有规模较大的、以年轻人为主的全科医疗服务团队,并配有持续性专业培训;社区卫生服务中心配有基础医疗设备,但仅少数可为患者提供多种常见病的综合性医疗服务;社区卫生服务中心就诊患者数仍较少。 | WONG W C W JIANG S ONG J J 本刊编辑部 | 2017 | 中国全科医学2017,20,19: | 6 |
| 4 | Biomarkers in Barrett's esophagus and esophageal adenocarcinoma:Predictors of progression and prognosis显示文摘Barrett’s esophagus is a well-known premalignant lesion of the lower esophagus that is characterized by intestinal metaplasia of the squamous epithelium. It is clinically important due to the increased risk (0.5% per annum) of progression to esophageal adenocarcinoma (EA), which has a poor outcome unless diagnosed early. The current clinical management of Barrett’s esophagus is hampered by the lack of accurate predictors of progression. In addition, when patients develop EA, the current staging modalities are limited in stratifying patients into different prognostic groups in order to guide the optimal therapy for an individual patient. Biomarkers have the potential to improve radically the clinical management of patients with Barrett’s esophagus and EA but have not yet entered mainstream clinical practice. This is in contrast to other cancers like breast and prostate for which biomarkers are utilized routinely to inform clinical decisions. This review aims to highlight the most promising predictive and prognostic biomarkers in Barrett’s esophagus and EA and to discuss what is required to move the field forward towards clinical application. | Chin-Ann J Ong Pierre Lao-Sirieix Rebecca C Fitzgerald | 2010 | World Journal of Gastroenterology2010,16,45: | 6 |
| 5 | Season of the year influences infection rates following total hip arthroplasty显示文摘AIM To research the influence of season of the year on periprosthetic joint infections.METHODS We conducted a retrospective review of the entire Medicare files from 2005 to 2014. Seasons were classified as spring, summer, fall or winter. Regional variations were accounted for by dividing patients into four geographic regions as per the United States Census Bureau(Northeast, Midwest, West and South). Acute postoperative infection and deep periprosthetic infections within 90 d after surgery were tracked. RESULTS In all regions, winter had the highest incidence of periprosthetic infections(mean 0.98%, SD 0.1%) and was significantly higher than other seasons in the Midwest, South and West(P < 0.05 for all) but not the Northeast(P = 0.358). Acute postoperative infection rates were more frequent in the summer and were significantly affected by season of the year in the West.CONCLUSION Season of the year is a risk factor for periprosthetic joint infection following total hip arthroplasty(THA). Understanding the influence of season on outcomes following THA is essential when risk-stratifying patients to optimize outcomes and reduce episode of care costs. | Samuel Rosas Alvin C Ong Leonard T Buller Karim G Sabeh Tsun yee Law Martin W Roche Victor H Hernandez | 2017 | World Journal of Orthopedics2017,8,12: | 4 |
| 6 | Resistance of fibre concrete slabs to low velocity projectile impact显示文摘 | Ong K C Baxkeerkhan M Paramasivam P | 1999 | Cement & Concrete Composites1999,21,4: | 2 |
| 7 | Interoperability of Design Intent in Integrated Product and Process Design显示文摘Concurrent engineering is currently an overwhelming t rend in product development since it takes the down-stream product development issues and product life-cycle issues into consideration in up-front design pro cess. At this stage, evaluation, verification and validation of design concepts and design schemes is critical to the right-to-market product development. I dentification and extraction of design intent from the part digital mock-ups in different data formats and created in different CAD systems for DFX considerati on, evaluation, verification, and validation is crucial too. Traditionally, fro m manufacturing point of view, feature identification and extraction is to get t he features and feature-related information for manufacturing planning and inte gration. Presently, from the viewpoint of product development and product servi ce life cycle, design intent identification and extraction is to get all the des ign-related information for DFX consideration in early design stage, such as de sign for assembly, design for service, design for tooling, design for functional ity and design for environment etc. Therefore, how to successfully extract desi gn intent such as design and machining features and design-related information from the prototyping digital mock-ups created by different CAD systems for DFX consideration in upstream design stage is a very useful topic in integrated prod uct and process design and development. Presently, there are heterogeneous CAD systems in the market and the interoperat ion among the different CAD systems is indispensable. The interoperability of d ifferent CAD systems is by way of data exchanged technology such as STEP and IGE S. The critical weakness of this interoperation technology is that much of the design intent is lost in the interoperation process. Once the product digital m ock-ups is exchanged via data exchange technology such as IGES or STEP, the des ign intent including the dimension-driven design features and other attributes embedded in the part model are lost in the data translation process. Models rea d out of CAD systems come into other systems as featureless chunks of geometry e ntities. Obviously, the interoperation technology does not satisfy the industry need. It has been reported that this poor interoperation technology, which pro vides poor CAD models in neutral-format geometry had cost the automobile indust ry alone $1 billon per year. Fortunately, some researchers have been aware of t he criticality of this since only the United States industry spends billons of d ollars as a result of poor interoperability between computer-aided engineering software tools. In the past, product development was often done within a single company by co-located design team. In more recent years, there has been a busi ness paradigm shift in product development as the product development is being d one more often by geographically and temporally distributed design teams. There is a high level of outsourcing, not only of manufacturing but also of actual pr oduct development effort. Besides, product development across companies, and ev en within a single company, is often done within a heterogeneous software tool e nvironment. How to improve the interoperability of design intent created in het erogeneous software tool environment geographically has become a critical issue in next-generation product development system. Design intent in this research is defined as the outcome of design process. Des ign process goes from the identification of needs to satisfaction of that needs. Design intent satisfies this kind of needs. In this research, design intent i s created in a CAD system and embedded in part CAD model. The detailed design i ntent here includes design and manufacturing features and the feature-relat ed information such as feature parameters, feature relationships and some relate d characteristics such as associativity. Interoperability refers to the ability to share and communicate in the heterogeneous environment or heterogeneous soft | M W Fu W F Lu A Y C Nee S K Ong | 2002 | 厦门大学学报(自然科学版)2002,41,S1: | 2 |
| 8 | Moving element method for train-track dynamics显示文摘 | Koh C G Ong J S Y Chua D K H Feng J | 2003 | International Journal for Numerical Methods in Engineering2003,56,: | 1 |
| 9 | Above and below groundinteraction in agroforestry system s显示文摘 | Ong C K Corlett J E Singh R P | 1991 | Forest Ecology andManagement1991,45,1: | 1 |
| 10 | Magnetic properties of BaFe12-2xZnxZrxO19 particles显示文摘 | WEI F L FANG H C ONG C K | 2000 | J Appl Phys2000,87,: | 1 |
| 11 | Critical cooling rates for glass formation in Zr-Al-Cu-Ni alloys 显示文摘 | HNG H H LI Y NG S C ONG C K | 1996 | J Non-Cryst Solids1996,208,12: | 1 |
| 12 | Ferrocement laminates for strengthening RC T- beams 显示文摘 | Paramasivam P Ong K C G Lim C T E | 1994 | Cement and Concrete Composites1994,16,2: | 1 |
| 13 | Magnetic order in Co-doped and (Mn,Co) codoped ZnO thin films by pulsed laser eposition显示文摘 | YAN L ONG C K RAO X S | 2004 | Appl Phys2004,96,: | 1 |
| 14 | Role of intracellular thiol depletion, mitochondrial dysfunction and reactive oxygen species in Salvia Miltiorrhiza-induced apoptosis in human hepatoma HepG2 cells 显示文摘 | Liu J Shen H M Ong C N | 2001 | Life Sciences2001,69,16: | 1 |
| 15 | An efficient method forcomputing leave-one-out error in support vector machines withgaussian kernels 显示文摘 | Lee M M S Keerthi S S Ong C J ei al | 2004 | IEEE Transition on Neural Networks2004,15,3: | 1 |
| 16 | Hybrid genetic algorithm and simulated annealing approach for the optimization of process plans for prismatic parts显示文摘 | LI W D ONG S K NEE A Y C | 2002 | International Journal of Product Research2002,40,8: | 1 |
| 17 | Nitrogen dy namics in cropping systems in southern Malawi contai ning Gliricidia sepium, pigeon peas and maize 显示文摘 | Chirwa P W Black C R Ong C K | 2006 | Agroforestry Systems2006,67,: | 1 |
| 18 | Semi-ductile grinding and polishing of Pyrex glass显示文摘 | ONG N S VENKATSH V C | 1998 | Materials Processing Technology1998,83,: | 1 |
| 19 | Reactive pulsed laser deposition of CNx films 显示文摘 | Zhao X -A Ong C W Tsang Y C | 1995 | Appl Phys Lett1995,66,: | 1 |
| 20 | Glass forming ability of bulk glass forming alloys显示文摘 | Li Y Ng S N Ong C K | 1997 | Scripta Material1997,36,7: | 1 |