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| 1 | Helicobacter pylori infection and risk of gastric cancer in Changle County,Fujian Province,China显示文摘AIM To evaluate the effects of Helicobacterpylori infection and other environmental factorson the development of gastric cancer.METHODS A population-based case-controlstudy was conducted in Changle County,FujianProvince.The primary gastric cancer cases werehistologically confirmed or diagnosed by surgerybetween,January 1996 and March 1998.Healthycontrols were randomly selected and matched byage,sex,and neighborhood of residence.Atotal of 101 pairs were included in the study.Specially trained interviewers conducted face-to-face interviews with the subjects according toa standardized questionnaire.Helicobacterpylori infections were measured by serum IgGantibody to Helicobacter pylori.ConditionalLogistic Regression analysis was used.RESULTS The presence of IgG antibody toHelicobacter pylori was 63.7% in studysubjects,56.0% in patients with cardiac cancer,and 60.5% in patients with non-cardiac gastriccancer.The risk factors of gastric cancer inChangle County were identified such as loweducational level[OR=3.864;95% confidenceinterval(95% CI)1.604-9.311],lowconsumption of fresh vegetables(OR=4.925;95%Cl 1.356-17.885),high intake of fish sauce(OR=10.587;95% Cl 2.821-39.738),unscheduled meals(OR=4.254;95%Cl 1.445- 12.552),and Helicobacter pylori infection(OR=3.453;95%Cl 0.901-13.224).CONCLUSION Helicobacter pylori infectionmay be important in the etiology of gastriccancer,but major risk factors other thanHelicobacter pylori are responsible for the highgastric morbidity in Changle County. | Lin Cai Shun Zhang Yu Zuo Feng Zhang | 2000 | World Journal of Gastroenterology2000，6，3： | 74 |
| 2 | 品管圈工具在我院质量持续改进活动中的应用显示文摘当前卫生行政部门在全国医疗机构中积极推进质量持续改进工作,其中品管圈活动作为质量改进的有效管理工具现已在数千家医疗机构中广泛开展.为解决医院现有的行政组织结构体系与品管圈工具基层驱动之间存在的矛盾,中山医院尝试在组织管理结构、平台建设、内训师培养激励等方面综合采取了一些措施,很好地推动了品管圈活动,在实践中取得了良好成效. | 王玉琦 秦新裕 高鑫 樊嘉 王戈红 李锋 李耘 秦净 张群仁 陶力 魏宁 陈瀚钰 | 2014 | 中华医院管理杂志2014，30，6： | 78 |
| 3 | 水利水电工程施工安全管理与安全控制显示文摘针对事故隐患,论述了事故隐患与危险源关系,指出了事故隐患形成原因,并提出了排查事故隐患与治理整改方案、防范及控制措施,以供水利水电工程安全管理借鉴。 | 郑霞忠 肖玲 张光飞 | 2010 | 水电能源科学2010，28，10： | 54 |
| 4 | Antimicrobial resistance in Acinetobacter baumannii : From bench to bedside显示文摘Acinetobacter baumannii(A. baumannii) is undoubtedly one of the most successful pathogens in the modern healthcare system. With invasive procedures, antibiotic use and immunocompromised hosts increasing in recent years, A. baumannii has become endemic in hospitals due to its versatile genetic machinery, which allows it to quickly evolve resistance factors, and to its remarkable ability to tolerate harsh environments. Infections and outbreaks caused by multidrugresistant A. baumannii(MDRAB) are prevalent and have been reported worldwide over the past twenty or more years. To address this problem effectively, knowledge of species identification, typing methods, clinical manifestations, risk factors, and virulence factors is essential. The global epidemiology of MDRAB is monitored by persistent surveillance programs. Because few effective antibiotics are available, clinicians often face serious challenges when treating patients with MDRAB. Therefore, a deep understanding of the resistance mechanisms used by MDRAB can shed light on two possible strategies to combat the dissemination of antimicrobial resistance: stringent infection control and antibiotic treatments, of which colistin-based combination therapy is the mainstream strategy. However, due to the current unsatisfying therapeutic outcomes, there is a great need to develop and evaluate the efficacy of new antibiotics and to understand the role of other potential alternatives, such as antimicrobial peptides, in the treatment of MDRAB infections. | Ming-Feng Lin Chung-Yu Lan | 2014 | World Journal of Clinical Cases2014，2，12： | 55 |
| 5 | Entransy dissipation minimization for liquid-solid phase change processes显示文摘The liquid-solid phase change process of a simple one-dimensional slab is studied in this paper.By taking entransy dissipation minimization as optimization objective,the optimal external reservoir temperature profiles are derived by using optimal control theory under the condition of a fixed freezing or melting time.The entransy dissipation corresponding to the optimal heat exchange strategies of minimum entransy dissipation is 8/9 of that corresponding to constant reservoir temperature operations,which is independent of all system parameters.The obtained results for entransy dissipation minimization are also compared with those obtained for the optimal heat exchange strategies of minimum entropy generation and constant reservoir temperature operations by numerical examples.The obtained results can provide some theoretical guidelines for the choice of optimal cooling or heating strategy in practical liquid-solid phase change processes. | XIA ShaoJun,CHEN LinGen & SUN FengRui Postgraduate School,Naval University of Engineering,Wuhan 430033,China | 2010 | Science China(Technological Sciences)2010，53，4： | 41 |
| 6 | Programmable time-domain digital-coding metasurface for non-linear harmonic manipulation and new wireless communication systems显示文摘Optical non-linear phenomena are typically observed in natural materials interacting with light at high intensities, and they benefit a diverse range of applications from communication to sensing. However,controlling harmonic conversion with high efficiency and flexibility remains a major issue in modern optical and radio-frequency systems. Here, we introduce a dynamic time-domain digital-coding metasurface that enables efficient manipulation of spectral harmonic distribution. By dynamically modulating the local phase of the surface reflectivity, we achieve accurate control of different harmonics in a highly programmable and dynamic fashion, enabling unusual responses, such as velocity illusion. As a relevant application, we propose and realize a novel architecture for wireless communication systems based on the time-domain digital-coding metasurface, which largely simplifies the architecture of modern communication systems, at the same time yielding excellent performance for real-time signal transmission. The presented work, from new concept to new system, opens new pathways in the application of metamaterials to practical technology. | Jie Zhao Xi Yang Jun Yan Dai Qiang Cheng Xiang Li Ning Hua Qi Jun Chen Ke Guo Dong Bai Shuo Liu Shi Jin Andrea Alù Tie Jun Cui | 2019 | National Science Review2019，6，2： | 46 |
| 7 | Danshen: a phytochemical and pharmacological overview显示文摘Danshen, the dried root or rhizome of Salvia miltiorrhiza Bge., is a traditional and folk medicine in Asian countries, especially in China and Japan. In this review, we summarized the recent researches of Danshen in traditional uses and preparations, chemical constituents, pharmacological activities and side effects. A total of 201 compounds from Danshen have been reported, including lipophilic diterpenoids, water-soluble phenolic acids, and other constituents, which have showed various pharmacological activities, such as anti-inflammation, anti-oxidation, anti-tumor, anti-atherogenesis, and anti-diabetes. This article intends to provide novel insight information for further development of Danshen, which could be of great value to its improvement of utilization. | MEI Xiao-Dan CAO Yan-Feng CHE Yan-Yun LI Jing SHANG Zhan-Peng ZHAO Wen-Jing QIAO Yan-Jiang ZHANG Jia-Yu | 2019 | Chinese Journal of Natural Medicines2019，17，1： | 43 |
| 8 | H5N1 avian influenza in China显示文摘H5N1 highly pathogenic avian influenza virus was first detected in a goose in Guangdong Province of China in 1996. Multiple genotypes of H5N1 viruses have been identified from apparently healthy waterfowl since 1999. In the years 2004-2008, over 100 outbreaks in domestic poultry occurred in 23 provinces and caused severe economic damage to the poultry industry in China. Beginning from 2004, a culling plus vaccination strategy has been implemented for the control of epidemics. Since then, over 35420000 poultry have been depopulated, and over 55 billion doses of the different vaccines have been used to control the outbreaks. Although it is logistically impossible to vaccinate every single bird in China due to the large poultry population and the complicated rearing styles, there is no doubt that the increased vaccination coverage has resulted in decreased disease epidemic and environmental virus loading. The experience in China suggests that vaccination has played an important role in the protection of poultry from H5N1 virus infection, the reduction of virus load in the environment, and the prevention of H5N1 virus transmission from poultry to humans. | CHEN HuaLan Animal Influenza Laboratory of the Ministry of Agriculture and National Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, China | 2009 | Science China(Life Sciences)2009，52，5： | 36 |
| 9 | 有机水稻病虫害防控措施研究进展显示文摘病虫害是制约有机水稻发展的一个重要因素,综述了目前有关有机水稻病虫害农业防治、物理防治、生物防治及药剂防治等方面取得的研究成果,以期为从事有机水稻研究的工作者提供参考。 | 姚英娟 曾小军 舒平平 梁玉勇 郑立平 李祖章 管珊红 杨兰根 | 2010 | 江西农业学报2010，22，10： | 35 |
| 10 | 产品市场竞争、政府控制与投资效率显示文摘选择沪深股市2004~2008年的非金融类上市公司为样本,参照Jorgenson(1963)的古典投资模型、Richardson(2006)的投资效率模型,从企业投资支出模型出发,以政府控制为研究背景,实证检验了产品市场竞争对企业投资效率的影响。从提供的经验证据表明:产品市场竞争有利于提高企业的投资效率,产品市场竞争越激烈的行业,投资效率越高;政府控制的企业对产品市场竞争的敏感性较低,由此扭曲了企业的投资行为,降低了投资效率。 | 徐一民 张志宏 | 2010 | 软科学2010，24，12： | 35 |
| 11 | A Review on Lower Limb Rehabilitation Exoskeleton Robots显示文摘Lower limb rehabilitation exoskeleton robots integrate sensing, control, and other technologies and exhibit the characteristics of bionics, robotics, information and control science, medicine, and other interdisciplinary areas. In this review, the typical products and prototypes of lower limb exoskeleton rehabilitation robots are introduced and stateof-the-art techniques are analyzed and summarized. Because the goal of rehabilitation training is to recover patients’ sporting ability to the normal level, studying the human gait is the foundation of lower limb exoskeleton rehabilitation robot research. Therefore, this review critically evaluates research progress in human gait analysis and systematically summarizes developments in the mechanical design and control of lower limb rehabilitation exoskeleton robots. From the performance of typical prototypes, it can be deduced that these robots can be connected to human limbs as wearable forms;further, it is possible to control robot movement at each joint to simulate normal gait and drive the patient’s limb to realize robot-assisted rehabilitation training. Therefore human–robot integration is one of the most important research directions, and in this context, rigid-flexible-soft hybrid structure design, customized personalized gait generation, and multimodal information fusion are three key technologies. | Di Shi Wuxiang Zhang Wei Zhang Xilun Ding | 2019 | Chinese Journal of Mechanical Engineering2019，32，4： | 36 |
| 12 | New development thoughts on the bio-inspired intelligence based control for unmanned combat aerial vehicle显示文摘Bio-inspired intelligence is in the spotlight in the field of international artificial intelligence,and unmanned combat aerial vehicle(UCAV),owing to its potential to perform dangerous,repetitive tasks in remote and hazardous,is very promising for the technological leadership of the nation and essential for improving the security of society.On the basis of introduction of bioinspired intelligence and UCAV,a series of new development thoughts on UCAV control are proposed,including artificial brain based high-level autonomous control for UCAV,swarm intelligence based cooperative control for multiple UCAVs,hy-brid swarm intelligence and Bayesian network based situation assessment under complicated combating environments, bio-inspired hardware based high-level autonomous control for UCAV,and meta-heuristic intelligence based heterogeneous cooperative control for multiple UCAVs and unmanned combat ground vehicles(UCGVs).The exact realization of the proposed new development thoughts can enhance the effectiveness of combat,while provide a series of novel breakthroughs for the intelligence,integration and advancement of future UCAV systems. | DUAN HaiBin 1 ,SHAO Shan 2 ,SU BingWei 3 &ZHANG Lei 41 State Key Laboratory of Science and Technology on Holistic Flight Control,School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics,Beijing 100191,China 2 Flight Control Department,Shenyang Aircraft Design and Research Institute,Shenyang 110035,China 3 Beijing Institute of Near Space Vehicle’s System Engineering,Beijing 100076,China 4Integration and Project Section,Air Force Equipment Academy,Beijing 100085,China | 2010 | Science China(Technological Sciences)2010，53，8： | 32 |
| 13 | MANET中TCP改进研究综述显示文摘传统TCP(transmission control protocol)本是为有线网络设计,它假设包丢失全是由网络拥塞引起,这个假设不能适应于MANET (mobile ad hoc network),因为MANET 中除了拥塞丢包以外,还存在由于较高比特误码率、路由故障等因素引起的丢包现象.当出现非拥塞因素丢包时,传统 TCP 将错误地触发拥塞控制,从而引起TCP 性能低下.任何改进机制都可以分为发现问题和解决问题两个阶段.首先概括了 MANET 中影响 TCP 性能的若干问题;然后针对发现问题和解决问题两个阶段,详细地对每一阶段中存在的各种可行方法进行了分类、分析和比较;最后指出了 MANET 中 TCP 性能优化的研究方向. | 冯彦君 孙利民 钱华林 宋成 | 2005 | 软件学报2005，16，3： | 34 |
| 14 | 基于AHP的威胁评估与排序模型研究显示文摘层次分析法(AnalyticHierarchyProcess,简称AHP)把一个复杂问题表示为有序的递阶层次结构,通过定性判断和定量计算,将经验判断给予量化,对决策方案进行排序,是一种定性分析与定量分析相结合的决策分析方法,适用于多准则决策问题。通过仿真实验用AHP根据威胁程度的大小对敌空袭目标进行排序,介绍了威胁评估和排序的求解过程,以此提供敌空袭目标对我保卫目标或区域所构成的威胁等级。该方法有效地解决了对敌空中目标威胁评估与排序问题。 | 唐雪松 郭立红 陈长喜 | 2006 | 微计算机信息2006，，09X： | 31 |
| 15 | Interpolation mechanism of fuzzy control显示文摘The fuzzy control algorithms used commonly at present are all regarded as some interpolation functions, which is in essence equivalent to discrete response functions to be fitted. This means that fuzzy control method is similar to finite element method in mathematical physics, which is a kind of direct manner or numerical method in control systems. | 李洪兴 | 1998 | Science China(Technological Sciences)1998，41，3： | 32 |
| 16 | Architecture of Nan'ao Multi-terminal VSC-HVDC System and Its Multi-functional Control显示文摘This paper presents a framework of a multi-terminal HVDC transmission system and its multi-functional control strategy.The framework possesses the basic characteristics of the DC-grid and is suitable in integrating distributed power sources.The paper proposes the first architecture for a multiterminal HVDC transmission system using the VSC technology.Its control strategy offers various functionalities that include controls for operation mode,start-up and shutdown,DC voltage,and station online re-connecting,which are significantly different from the control of point-to-point VSC-HVDC systems.The framework has not only been evaluated in real-time simulation studies,but has also been implemented onsite for the first time via the China Southern Grid's Nan'ao Multi-terminal VSCHVDC(VSC-MTDC)project.This paper gives a brief review of the current research and engineering achievements in this field,which includes four aspects:the architecture of the VSCMTDC system,the structure of the control and protection system,simulation verification tests setting,and the results of real-time hardware in hardware in loop(HIL)simulation studies and onsite tests. | Hong Rao | 2015 | CSEE Journal of Power and Energy Systems2015，1，1： | 31 |
| 17 | Optimal Control of Nonlinear Inverted Pendulum System Using PID Controller and LQR: Performance Analysis Without and With Disturbance Input显示文摘Linear quadratic regulator(LQR) and proportional-integral-derivative(PID) control methods, which are generally used for control of linear dynamical systems, are used in this paper to control the nonlinear dynamical system. LQR is one of the optimal control techniques, which takes into account the states of the dynamical system and control input to make the optimal control decisions.The nonlinear system states are fed to LQR which is designed using a linear state-space model. This is simple as well as robust. The inverted pendulum, a highly nonlinear unstable system, is used as a benchmark for implementing the control methods. Here the control objective is to control the system such that the cart reaches a desired position and the inverted pendulum stabilizes in the upright position. In this paper, the modeling and simulation for optimal control design of nonlinear inverted pendulum-cart dynamic system using PID controller and LQR have been presented for both cases of without and with disturbance input. The Matlab-Simulink models have been developed for simulation and performance analysis of the control schemes. The simulation results justify the comparative advantage of LQR control method. | Lal Bahadur Prasad Barjeev Tyagi Hari Om Gupta | 2014 | International Journal of Automation and computing2014，11，6： | 32 |
| 18 | Review of zero-net-mass-flux jet and its application in separation flow control显示文摘Since the zero-net-mass-flux (ZNMF) jet was first used as a laboratory flow control method in 1990's, it has attracted much attention. The ZNMF jet has unique features such as compact actuator, no requirement for external air supply, complex piping, etc., and becomes a hot topic research subject in fluid mechanics. This review introduces the state of the art in the development of ZNMF jet in the quiescent fluid, the interaction of the ZNMF jet with the cross flow and its application in the separation flow control. The evolution of the vortex ring/pair and the spacial flow structure of the ZNMF in quicent fluid or cross flow are presented, as well as the key parameter effects. At last, the applications of ZNMF jet in the wake control of the circular cylinder, the separation control on the airfoil and the aerodynamic force or moment control on MAV/UAV are presented. | ZHANG PanFeng WANG JinJun FENG LiHao | 2008 | Science China(Technological Sciences)2008，51，9： | 30 |
| 19 | Methods of vascular control technique during liver resection:a comprehensive review显示文摘BACKGROUND:Significant hemorrhage together with blood transfusion increases postoperative morbidity and mortality of hepatic resection.Hepatic vascular occlusion is effective in minimizing bleeding during hepatic parenchymal transection.This article aimed to review the current role and status of various techniques of hepatic vascular occlusion during hepatic resection.DATA SOURCES:The relevant manuscripts were identified by searching MEDLINE,and PubMed for articles published between January 1980 and April 2010 using the keywords ' vascular control','vascular clamping','vascular exclusion' and 'hepatectomy'.Additional papers were identified by a manual search of the references from the key articles.RESULTS:One randomized controlled trial(RCT) and 5 RCTs showed intermittent Pringle maneuver and ischemic preconditioning followed by continuous Pringle maneuver were superior to continuous Pringle maneuver alone,respectively.Two RCTs compared the outcomes of hepatectomy with and without intermittent Pringle maneuver.One showed Pringle maneuver to be beneficial,while the other failed to show any benefit.One RCT showed that ischemic preconditioning had significantly less blood loss than using intermittent Pringle maneuver.Four RCTs evaluated the use of hemihepatic vascular occlusion.One RCT showed it had significantly less blood loss than Pringle maneuver,while the other 3 showed no significant difference.Only 1 RCT showed it had significantly less liver ischemic injury.No RCT had been carried out to assess segmental vascular occlusion.Two RCTs compared the outcomes of total hepatic vascular exclusion(THVE) and Pringle maneuver.One RCT showed THVE resulted in similar blood loss,but a higher postoperative complication.The other RCT showed less blood loss using THVE but the postoperative complication rate was similar.Both studies showed similar degree of liver ischemic injury.Only one RCT showed that selective hepatic vascular exclusion(SHVE) had less blood loss and liver ischemic injury than Pringle maneuver.CONCLUSION:Due to the great variations in these studies,it is difficult to draw a definitive conclusion on the best technique of hepatic vascular control. | Wan-Yee Lau Eric C.H.Lai Stephanie H.Y.Lau | 2010 | Hepatobiliary & Pancreatic Diseases International2010，9，5： | 27 |
| 20 | 叶面喷施稀土对千年桐幼苗生长和生理的影响显示文摘The seedlings of Vernicia montana derived from seeds soaking with water (the first group)or 300 mg5L -1 mixed nitric_acid rare earth solution (the second group) were treated with various concentrations of mixed nitric_acid rare earth solution by foliage spraying. The results showed that the seedling heights sprayed with 100 和 1 000 mg·L -1 of the first group and with 50 和 100 mg·L -1 of the second group were significantly higher than the controls, and the diameter at ground level sprayed with 300 mg·L -1 of the second group was significantly greater than the control, being 26.92% more than the latter; except for spraying with 0 mg5L -1 and 700~1 500 mg5L -1 of the second group, the seedling dry weight above ground of others was 29.13%~73.91% greater than the control, whereas the seedling dry weight under ground of others was 20.78%~116.88% greater than the control; the contents of chlorophyll a and chlorophyll b for all spraying seedling were 91.67%~191.67% and 87.5%~306.25% greater than the control, respectively, and soluble proteins and soluble sugars were 16.00%~179.78% and 10.73%~105.65% greater than the control, respectively. Compared with the control, the activity of SOD tended to increase, whereas the contents of MDA decreased. These indicated that spraying leaves with optimum concentration of mixed nitric_acid rare earth solution could markedly promote the growth of seedlings and improve resistance ability of V. montana seedlings to bad environment. On the whole, the effects of spraying the leaves of seedling with 50~500 mg5L -1 mixed nitric_acid rare earth solution, which were derived from seeds soaking with 300 mg·L -1 mixed nitric_acid rare earth solution, were good. | 韦如萍 薛立 陈红跃 彭耀强 许松葵 | 2005 | 林业科学2005，41，2： | 28 |
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