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| 1 | Invasive mechanism and control strategy of Ageratina adenophora (Sprengel)显示文摘In order to ascertain the invasive mechanism and control strategy of the invasive Crofton weed, Ageratina adenophora, its ecological adaptability and population differentiation,the formation of single dominant population, displacement of native plants and sustainable management strategies were investigated. The present results helped to clarify and explain such issues as the adaptability post invasion,interaction and competition between inter-and intra-species and community resistance, thereby providing important references to researches on other invasive alien species. | WAN FangHao1, LIU WanXue1, GUO JianYing1, QIANG Sheng2, LI BaoPing2, WANG JinJun3, YANG GuoQing1, NIU HongBang1, GUI FuRong1, HUANG WenKun1, JIANG ZhiLin1 & WANG WenQi3 1State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China 2College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China 3Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, China | 2010 | Science China(Life Sciences)2010，53，11： | 42 |
| 2 | 竞技健美操成套动作中难度动作的整体分析研究显示文摘 | | 1999 | 浙江体育科学1999，21，4： | 19 |
| 3 | 网络关系强度与产业集群竞争优势关系的实证研究显示文摘从社会网络特征即网络关系强度入手,构建结构方程模型研究其对产业集群竞争优势的影响关系。实证研究表明,网络关系强度对产业集群竞争优势有显著的正向影响;网络关系强度通过技术创新对产业集群竞争优势产生的影响大于不通过中介变量产生的直接影响;网络关系强度是影响产业集群竞争优势的四个因素中最为重要的因素。因此,网络结构下的产业集群若能通过提高互惠性,扩大合作交流范围和增加接触的机会来加强网络关系强度,将能更好地提升其整体的竞争优势。 | 闫莹 陈建富 | 2010 | 软科学2010，24，12： | 15 |
| 4 | Application of several optimization techniques for estimating TBM advance rate in granitic rocks显示文摘This study aims to develop several optimization techniques for predicting advance rate of tunnel boring machine(TBM)in different weathered zones of granite.For this purpose,extensive field and laboratory studies have been conducted along the 12,649 m of the Pahang-Selangor raw water transfer tunnel in Malaysia.Rock properties consisting of uniaxial compressive strength(UCS),Brazilian tensile strength(BTS),rock mass rating(RMR),rock quality designation(RQD),quartz content(q)and weathered zone as well as machine specifications including thrust force and revolution per minute(RPM)were measured to establish comprehensive datasets for optimization.Accordingly,to estimate the advance rate of TBM,two new hybrid optimization techniques,i.e.an artificial neural network(ANN)combined with both imperialist competitive algorithm(ICA)and particle swarm optimization(PSO),were developed for mechanical tunneling in granitic rocks.Further,the new hybrid optimization techniques were compared and the best one was chosen among them to be used for practice.To evaluate the accuracy of the proposed models for both testing and training datasets,various statistical indices including coefficient of determination(R^2),root mean square error(RMSE)and variance account for(VAF)were utilized herein.The values of R^2,RMSE,and VAF ranged in 0.939-0.961,0.022-0.036,and 93.899-96.145,respectively,with the PSO-ANN hybrid technique demonstrating the best performance.It is concluded that both the optimization techniques,i.e.PSO-ANN and ICA-ANN,could be utilized for predicting the advance rate of TBMs;however,the PSO-ANN technique is superior. | Danial Jahed Armaghani Mohammadreza Koopialipoor Aminaton Marto Saffet Yagiz | 2019 | Journal of Rock Mechanics and Geotechnical Engineering2019，11，4： | 15 |
| 5 | Competing endogenous RNA networks and gastric cancer显示文摘Recent studies have showed that RNAs regulate each other with micro RNA(mi RNA) response elements(MREs) and this mechanism is known as 'competing endogenous RNA(ce RNA)' hypothesis. Long noncoding RNAs(lnc RNAs) are supposed to play important roles in cancer. Compelling evidence suggests that lnc RNAs can interact with mi RNAs and regulate the expression of mi RNAs as ce RNAs. Several lnc RNAs such as H19, HOTAIR and MEG3 have been found to be associated with mi RNAs in gastric cancer(GC), generating regulatory crosstalk across the transcriptome. These MRE sharing elements implicated in the ce RNA networks(ce RNETs) are able to regulate m RNA expression. The ce RNA regulatory networks including m RNAs, mi RNAs, lnc RNAs and circular RNAs may play critical roles in tumorigenesis, and the perturbations of ce RNETs may contribute to the pathogenesis of GC. | Lei-Lei Guo Chun-Hua Song Peng Wang Li-Ping Dai Jian-Ying Zhang Kai-Juan Wang | 2015 | World Journal of Gastroenterology2015，21，41： | 11 |
| 6 | URBAN COMPETITIVE PATTERN AND ITS CHANGES IN CHINA显示文摘With the national economy’s transition from a planning one to a market one, the factors affecting regional economic pattern has changed greatly. In this paper we first construct an index system for evaluating competitiveness of Chinese cities based on modern competitive advantage theory. With principal component analysis and cluster analysis methods, we compare the factors affecling cities’ integrated competitiveness in 1990 and 1997. We find that four major factors are capital (including investment, FDI and urban financial revenue ), urban ithestructure (transporiation and communication, urbanization level, education etc. ), industrial performance and structure, degree of market openness and that these factors have become more advanced and complicated since 1990. Most Chinese cities are transforming from productive factors-oriented type to investment-oriented type and a few are becoming innovation oriented. The integrated competitiveness is closely related to cities’ scale, urban function, regional policy and degree of market openness and displays an uneven spatial pattern. The difference between the south and the north and the difference between the west and the east co-exist bul the former has been more larger. Finally, we discuss the mechanism behind the pattern and attribute the unevenness to change of factors dominating the cities’ compehtiveness regional innovation capacity and geographical differenceof traditional culture. | DOU Wen-zhang LI Guo-ping GAN Ying-jin WANG Li-ming YANG Kai-zhong(Department of Urban and Environmental Sciences, Peking University, Beijing 100871, P R. China) | 2000 | Chinese Geographical Science2000，10，2： | 5 |
| 7 | Optimal design of hybrid wind/photovoltaic electrolyzer for maximum hydrogen production using imperialist competitive algorithm显示文摘The rising demand for high-density power storage systems such as hydrogen,combined with renewable power production systems,has led to the design of optimal power production and storage systems.In this study,a wind and photovoltaic(PV)hybrid electrolyzer system,which maximizes the hydrogen production for a diurnal operation of the system,is designed and simulated.The operation of the system is optimized using imperialist competitive algorithm(ICA).The objective of this optimization is to combine the PV array and wind turbine(WT)in a way that,for minimized average excess power generation,maximum hydrogen would be produced.Actual meteorological data of Miami is used for simulations.A framework of the advanced alkaline electrolyzer with the detailed electrochemical model is used.This optimal system comprises a PV module with a power of 7.9 kW and a WT module with a power of 11 kW.The rate of hydrogen production is 0.0192 mol/s;an average Faraday efficiency of 86.9 percent.The electrolyzer works with 53.7 percent of its nominal power.The availability of the wind for longer periods of time reflects the greater contribution of WT in comparison with PV towards the overall throughput of the system. | Arash KHALILNEJAD Aditya SUNDARARAJAN Arif I.SARWAT | 2018 | Journal of Modern Power Systems and Clean Energy2018，6，1： | 4 |
| 8 | A competitive RT-PCR-based approach to quantifying promoter activity of stress gene显示文摘Chloramphenicol acetyltransferase (CAT) as a stable reporter has been broadly adopted to detect promoter activity of many stress genes in eukaryotic cells. A simplified, convenient and relatively accurate assay to reveal CAT activities driven by heat shock gene promoter upon cell stress is reported here. A CAT mutant control plasmid pMCAT is constructed out of pBLCAT3, with a DNA segment within the CAT gene deleted. The control plasmid pMCAT along with the wild type CAT reporter gene driven by the regulatory sequence of hsp90β gene are co-transfected into Jurkat cells. Following total cellular RNA extracted and reverse transcribed, PCR is carried out to amplify two individual fragments with the same pair of synthesized primers, which bind to the identical sequences in both pMCAT and the CAT reporter plasmids. The two PCR fragments amplified from the reporter and control RNAs are identified by their size differences in agarose gel electrophoresis. The ratio of intensity of the two PCR bands in the same lane is taken as 'relative units of promoter efficiency' of a gene. The transcripts instead of CAT activity thus detected, may not only provide a closer look at the promoter activity of the stress gene but also normalize the efficiency of transfection simultaneously. With experimental conditions optimized, visible and reliable results can be obtained without using any sophisticated instruments. Since the results obtained with the RT-PCR approach are reproducible, much less troublesome and time-consuming, and comparable to our previous data, we thus take it as a conventional procedure for promoter activity assay of human hsp gene upon heat shock. Additionally, results from the assay have recently provided the first evidence that Rac, MEKK and JNK signals participate in the heat shock-induced expression of hsp90β gene. | MO Zhicheng, LI Xiaoyan, LI Hongfan, CHENG Xiaokuan, WU Ninghua and SHEN Yufei(National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, China) | 2002 | Progress in Natural Science:Materials International2002，12，10： | 4 |
| 9 | 莱克多巴胺快速检测竞争ELISA试剂盒的研制及其性能测定(英文)显示文摘Mixed anhydride(MA)was used to conjugate ractopamine(RAC)to BSA and obtained artificial antigen BSA-RAC identified by UV and SDS-PAGE.Balb/c mice were immunized with BSA-RAC and hybridoma lines that secrete RAC monoclonal antibody(mAb)were generated with cell fusion.A ciELISA kit for detection of RAC(RAC-Kit)was developed with RAC mAb and its performance were tested.The results indicated that BSA-RAC was successfully synthesized and its conjugation ratio of RAC to BSA was about 24.5∶1.Three hybridoma lines were filtered and the best one was 4D8-3E11,its affinity constant(Ka)was 1.65×1010 L/mol.The limit of detection of RAC-Kit was 0.5 ng/ml and its detection range was 0.5-184 ng/ml.The mean recoveries of RAC spiked in feed were 85.6% and in swine urine were 88.6%.The precision and accuracy of the assay as determined by inter-assay and intra-assay coefficient variation were below 15%.It had 9.4% cross-reactivity(CR%)to dobutamine and little or no CR to other compounds.The validity of RAC-Kit in 4 ℃ was in 180 d. | 张海棠 姜金庆 邓瑞广 王自良 | 2008 | Agricultural Science & Technology2008，9，5： | 3 |
| 10 | Development of ELISA and immunochromatographic assay for ofloxacin显示文摘Two rapid,sensitive and reliable immunoassay methods,namely competitive indirect enzyme-linked immunosorbent assay(CI- ELISA)and colloidal gold-based immunochromatographic assay(CGIA),were developed to detect ofloxacin(OFL).The linear range of the CI-ELISAwas from 0.5 to 128 ng/mL with a limit of detection(LOD)of 0.35 ng/mL.Good recoveries were obtained in analyzing simulated swine urine samples.The CGIA could accurately estimate OFL at concentrations as low as 10 ng/mL in less than 10 min,and test results were read visually without any instrument. | Wu Yong Sun Wen Ying Liu Ling Bo Qu | 2007 | Chinese Chemical Letters2007，18，9： | 3 |
| 11 | 影响中国女子竞技体育发展的文化学因素分析显示文摘体育是社会文化的一个重要组成部分,我国竞技体育成绩的取得在很大程度上依赖于女子运动员的发挥。运用文献资料、理论分析等方法,从性别文化学角度揭示出社会文化与女子竞技体育的关系,探究影响女子竞技体育发展的深层因素,即个人因素、家庭因素和社会因素的影响,从而使人们更清晰认识中国妇女体育发展所处的环境,加深对女子竞技体育的理解。 | 郑家鹏 | 2006 | 体育科技2006，27，1： | 3 |
| 12 | A competitive microcystin-LR immunosensor based on Au NPs@metal-organic framework(MIL-101)显示文摘An electrochemical immunosensor was developed for ultrasensitive detection of microcystin-LR in water. MIL-101, a porous metal-organic frameworks(MOFs) material based on trivalent chromium skeleton were synthesized by hydrothermal synthesis method, and loaded with Au nanoparticles(Au NPs) to prepare Au NPs@MIL-101 composite materials which were used as a marker to label anti microcystin-LR(Anti-MC-LR). The composite materials have strong catalytic properties to the oxidation of ascorbic acid. Anti-MC-LR was immobilized on glassy carbon electrode surface using electrodeposition graphene oxide(GO) as an immobilization matrix to construct a competitive microcystin-LR immunosensor. The electrochemical immunosensor display linear relationship in the range of 0.05 ng/mL-75 μg/mL with linear correlation coefficient of 0.9951 and detection limit of 0.02 ng/mL(S/N = 3). This sensor was used to detect microcystin-LR in the water sample. The recovery was 102.43%,which is satisfied. The good testing results indicate the sensor has a great prospect in practical application. | Kunlei Zhang Kun Dai Ruyan Bai Yuchan Ma Yan Deng Delei Li Xi Zhang Rong Hu Yunhui Yang | 2019 | Chinese Chemical Letters2019，30，3： | 2 |
| 13 | Learning Vector Coding Methods of ART1 and Their Applications显示文摘As one of the unsupervised learning models, ART1 has been widely used in data mining or other fields, while coding of it’s learning vector is very important. Their input vector coding methods and learning vector coding methods are described in detail. The corresponding applications are given. | CHEN Hai xin, XU Shen chu, CHEN Zhen xiang, ZHU Xiao qin (Dept. of Phys., Xiamen University, Xiamen 361005, CHN) | 2002 | Semiconductor Photonics and Technology2002，8，3： | 2 |
| 14 | 关于期刊质量与论文质量评价的探讨显示文摘关于期刊质量与论文质量评价的探讨朱宁随着我国科技体制改革的日趋完善,广大科研工作者的科研积极性不断增强,他们用自己的勤劳智慧和辛勤汗水创造出了丰硕的科研成果.近些年来,为确定学术带头人、晋升职称等工作的需要,不少同志向图书馆询问:某某期刊属于哪个级别... | 朱宁 | 1995 | 湖北科技学院学报1995，26，4： | 2 |
| 15 | Phase-field simulation of competitive growth of grains in a binary alloy during directional solidification显示文摘Taking Al-2%mole-Cu binary alloy as an example, the influence of grain orientation on competitive growth of dendrites under different competitive modes was investigated by using the three-dimensional(3-D) phasefield method. The result of phase-field simulation was verified by applying cold spray and directional remelting. In the simulation process, two competitive modes were designed: in Scheme 1, the monolayer columnar grains in multilayer columnar crystals had different orientations; while in Scheme 2, they had the same orientation. The simulation result showed that in Scheme 1, the growth of the dendrites, whose orientation had a certain included angle with the direction of temperature gradient, was restrained by the growth of other dendrites whose direction was parallel to the direction of temperature gradient. Moreover, the larger the included angle between the grain orientation and temperature gradient, the earlier the cessation of dendrite growth. The secondary dendrites of dendrites whose grain orientation was parallel to the temperature gradient flourished with increasing included angles between the grain orientation and temperature gradient. In Scheme 2, the greater the included angle between grain orientation and temperature gradient, the easier the dendrites whose orientation showed a certain included angle with temperature gradient inserted between those grew parallel to the temperature gradient, and the better the growth condition thereafter. Some growing dendrites after intercalation were deflected to the temperature gradient, and the greater the included angle, the lower the deflection. The morphologies of the competitive growth dendrites obtained through simulation can also be found in metallographs of practical solidification experiments. This implies that the two modes of competitive growth of dendrites characterized in the simulation do exist and frequently appear in practical solidification processes. | Li Feng Ya-long Gao Ni-ni Lu Chang-sheng Zhu Guo-sheng An Jun-he Zhong | 2018 | China Foundry2018，15，5： | 2 |
| 16 | THE CLASSIFICATION OF SPACE GRADATION OF GROUP COMPETITIVE RHYTHMIC GYMNASTICS AND THE UTILIZATION OF LAYOUT显示文摘In order to accurately describe,compare and analyse the spacecharacteristics of movements of competitive rhythmic gymnastics,according to the characteristics of human body and the equipments as well as the condition of space, the space height associated with comptitive rhythmic gymnastics is divided into 5 gradations. And through studies on top group exercise of the world,it reveals the pluralism of the application of space gradation of group exercise,the distributive state of space of movements of human body and the equipments as well as the characteritics of the application of space gradation of movements of different equipments. | KUANG Li WEI Xiaowen(Beijing University of Physical Education) | 1996 | 北京体育大学学报1996，19，S2： | 2 |
| 17 | Competitive surface interactions of critical additives interacted with piston ring/cylinder liner components under lubricated running-in conditions显示文摘The running-in frictional experiments were conducted under simulated engine conditionswith actual piston rings and iron cylinder liner combinations. Elemental analyses of the wear tracksindicate that antiwear agent ZDTP is quite different from the Mg- and Ca-containing detergents inthe selectivity towards the tribosurfaces of both rings and liners. It is suggested that the tribo-chemical activity of tribosurfaces plays the role in governing the characteristic population of func-tional additive elements. | SimonC.Tung | 2001 | Science China Mathematics2001，44，S1： | 2 |
| 18 | Electrically focus-tuneable ultrathin lens for high-resolution square subpixels显示文摘Owing to the tremendous demands for high-resolution pixel-scale thin lenses in displays,we developed a graphenebased ultrathin square subpixel lens(USSL)capable of electrically tuneable focusing(ETF)with a performance competitive with that of a typical mechanical refractive lens.The fringe field due to a voltage bias in the graphene proves that our ETF-USSL can focus light onto a single point regardless of the wavelength of the visible light—by controlling the carriers at the Dirac point using radially patterned graphene layers,the focal length of the planar structure can be adjusted without changing the curvature or position of the lens.A high focusing efficiency of over 60% at a visible wavelength of 405 nm was achieved with a lens thickness of <13 nm,and a change of 19.42% in the focal length with a 9% increase in transmission was exhibited under a driving voltage.This design is first presented as an ETF-USSL that can be controlled in pixel units of flat panel displays for visible light.It can be easily applied as an add-on to high resolution,slim displays and provides a new direction for the application of multifunctional autostereoscopic displays. | Sehong Park Gilho Lee Byeongho Park Youngho Seo Chae bin Park Young Tea Chun Chulmin Joo Junsuk Rho Jong Min Kim James Hone Seong Chan Jun | 2020 | Light(Science & Applications)2020，9，1： | 2 |
| 19 | The interferon-stimulated exosomal hACE2 potently inhibits SARS-CoV-2 replication through competitively blocking the virus entry显示文摘Since the outbreak of coronavirus disease 2019(COVID-19),it has become a global pandemic.The spike(S)protein of etiologic severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)specifically recognizes human angiotensin-converting enzyme 2(hACE2)as its receptor,which is recently identified as an interferon(IFN)-stimulated gene.Here,we find that hACE2 exists on the surface of exosomes released by different cell types,and the expression of exosomal hACE2 is increased by IFNα/β treatment.In particular,exosomal hACE2 can specifically block the cell entry of SARS-CoV-2,subsequently inhibit the replication of SARS-CoV-2 in vitro and ex vivo.Our findings have indicated that IFN is able to upregulate a viral receptor on the exosomes which competitively block the virus entry,exhibiting a potential antiviral strategy. | Junsong Zhang Feng Huang Baijin Xia Yaochang Yuan Fei Yu Guanwen Wang Qianyu Chen Qian Wang Yuzhuang Li Rong Li Zheng Song Ting Pan Jingliang Chen Gen Lu Hui Zhang | 2021 | Signal Transduction and Targeted Therapy2021，6，6： | 2 |
| 20 | 湖南省竞技体育人才资源的开发与利用显示文摘结合湖南竞技体育的发展现状,分析了湖南竞技体育人才资源的资源劣势,并从后备人才培养、开发项目布局、资源的配置、运动员的保障等方面提出了相应对策. | 肖红青 唐丽 | 2010 | 吉首大学学报(自然科学版)2010，31，6： | 1 |
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