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38,495 条 记 录,以下是 1-30

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Glucose Oxidase-graphene-chitosan modified electrode for direct electrochemistry and glucose sensing
BIOSENSORS & BIOELECTRONICSKang, Xinhuang Wang, Jun Wu, Hong Aksay, Ilhan A. Liu, Jun Lin, Yuehe  出版年:2009
Direct electrochemistry of a glucose oxidase (GOD)-graphene-chitosan nanocomposite was studied. The immobilized enzyme retains its bioactivity, exhibits a surface confined, reversible two-proton and two-electron transfer...
A sensitive nonenzymatic glucose sensor in alkaline media with a copper nanocluster/multiwall carbon nano tube-modified glassy carbon electrode
ANALYTICAL BIOCHEMISTRYKang, Xinhuang Mai, Zhibin Zou, Xiaoyong Cai, Peixiang Mo, Jinyuan  出版年:2007
Copper (Cu) nanoclusters were electrochemically deposited on the film of a Nafion-solubilized muldwall carbon nanotube (CNTs)modified glassy carbon electrode (CNTs-GCE), which fabricated a Cu-CNTs composite sensor (Cu-CN...
A graphene-based electrochemical sensor for sensitive detection of paracetamol
TALANTAKang, Xinhuang Wang, Jun Wu, Hong Liu, Jun Aksay, Ilhan A. Lin, Yuehe  出版年:2010
An electrochemical sensor based on the electrocatalytic activity of functionalized graphene for sensitive detection of paracetamol is presented. The electrochemical behaviors of paracetamol on graphene-modified glassy ca...
中国红树林生态系统生态价值评估
《生态科学》韩维栋 高秀梅  出版年:2000
使用市场价值法,影子工程法,机会成本法和替代花费法等对中国现存自然分布的13646hm^2的红树林生态系统的功能价值进行经济评估,评估结果表明,中国红树林总的年生态功能价值为236531万元,其中生物量价值8163万元,...下载全文在线阅读
关键词:红树林  生态系统  功能价值评估  生态价值  被引量:249
A novel glucose biosensor based on immobilization of glucose oxidase in chitosan on a glassy carbon electrode modified with gold-platinum alloy nanoparticles/multiwall carbon nanotubes
ANALYTICAL BIOCHEMISTRYKang, Xinhuang Mai, Zhibin Zou, Xiaoyong Cai, Peixiang Mo, Jinyuan  出版年:2007
A novel glucose biosensor was constructed, based on the immobilization of glucose oxidase (GOx) with cross-linking in the matrix of biopolymer chitosan (CS) on a glassy carbon electrode (GCE), which was modified with gol...
核心力量训练与传统力量训练之间关系的理论思考——核心稳定性训练
《天津体育学院学报》于红妍 王虎 冯春辉 贾嘉  出版年:2008
核心力量训练引起国内专家学者们的关注,尤其在我国高水平运动员的素质训练中已被相当一些教练员所接受,为了明晰核心力量与传统力量训练之间的关系,主要运用文献资料法、逻辑分析法和对比分析法对核心力量与传统力量训练的关系进行了分...下载全文在线阅读
关键词:核心力量  核心稳定性  力量训练  运动员  被引量:220
共享经济:理论与现实
《广东财经大学学报》董成惠  出版年:2016
共享经济既能像传统消费模式一样满足人们的物质需求,又能解决人们对于环境保护的焦虑。降低新产品的生产量和原材料消耗,改变人们的消费观念。网络平台公司是共享经济的核心,通过网络技术使闲置资源在供方与需方之间得到精准配置,实现...下载全文在线阅读
关键词:共享  共享经济  协同消费  网络平台  闲置资源  资源配置  被引量:209
马氏珠母贝肉的营养成分及其游离氨基酸组成
《水产学报》章超桦 吴红棉  出版年:2000
对马氏珠母贝肉的营养成分及游离氨基酸组成进行了较系统的食品化学特性研究,结果表明:马氏珠母贝含粗蛋白74.9%(干基),蛋白质的氨基酸组成中,富含Glu(2.21%)、Asp(1.45)、Gly(1.01%)等呈味氨基酸...下载全文在线阅读
关键词:马氏株母贝  营养成分  游离氨基酸组成  珍珠贝肉  被引量:182
An extended TOPSIS for determining weights of decision makers with interval numbers
KNOWLEDGE-BASED SYSTEMSYue, Zhongliang  出版年:2011
In this paper, we develop a method for determining weights of decision makers under group decision environment, in which the each individual decision information is expressed by a matrix in interval numbers. We define th...
辣椒内生细菌的分离及拮抗菌的筛选
《中国生物防治》何红 蔡学清 洪永聪 关雄 胡方平  出版年:2002
对健康辣椒植株体内的内生细菌及拮抗菌进行了分离筛选.结果表明,不同品种、部位及种植地,内生细菌的数量有所不同,品种间内生细菌的数量变化为2.83×103~1.346×104cfu/g(FW);各品种以叶片中内生细菌的数量...下载全文在线阅读
关键词:分离  辣椒  内生细菌  鉴定  拮抗菌  筛选  被引量:170
Spartina invasion in China: implications for invasive species management and future research
WEED RESEARCHAn, S. Q. Gu, B. H. Zhou, C. F. Wang, Z. S. Deng, Z. F. Zhi, Y. B. Li, H. L. Chen, L. Yu, D. H. Liu, Y. H.  出版年:2007
Four species of Spartina (Spartina anglica, S. alterniflora, S. patens and S. cynosuroides) have been introduced to China, but currently only the first three are present and only the first two successfully reproduce on t...
简化CTAB法快速微量提取丝状真菌DNA
《湛江海洋大学学报》易润华 朱西儒 周而勋  出版年:2003
应用分子标记技术如RAPD、AFLP进行植物病原真菌的群体遗传学、系统演化[1~4]等方面的工作,特别是进行群体遗传结构及系统演化研究时需要研究大量样品,提取DNA的工作量十分大,需要花很多的时间.通常提取植物病原真菌D...下载全文在线阅读
关键词:丝状真菌  立枯丝核菌  DNA提取  RAID  被引量:159
Apparent digestibility of selected feed ingredients for juvenile cobia Rachycentron canadum
AQUACULTUREZhou, QC Tan, BP Mai, KS Liu, YH  出版年:2004
Apparent digestibility coefficients of dry matter (DM), crude protein (CP), crude lipid (CL), gross energy (GE), phosphorus, and amino acids in Peruvian fish meal, defatted soybean meal/roasted and solvent-extracted, def...
Effects of traditional Chinese medicine on nonspecific immunity and disease resistance of large yellow croaker, Pseudosciaena crocea (Richardson)
AQUACULTUREJian, JC Wu, ZH  出版年:2003
The influence of traditional Chinese medicine (TCM) formulated from Astragalus Root (Radix astragalin seu Hedysari) and Chinese Angelica Root (Radix angelicae sinensis) at the rate of 5:1 (w/w) on nonspecific immunity in...
生计资本与生计策略关系研究——以张掖市甘州区为例
《中国人口资源与环境》苏芳 蒲欣冬 徐中民 王立安  出版年:2009
农民的生计安全与质量问题是当今中国农村的核心问题。稳定的生计可以使有关的政策佛调发展、消除贫困并可持续地利用资源。本文采用可持续生计框架为研究基础,农户的生计资产为框架核心,通过建立可持续生计评价指标体系,对农户的生计资...下载全文在线阅读
关键词:可持续生计(SLA)  生计资本  生计策略  层次分析法(AHP)  被引量:151
构建“以人为本”的现代体育教育观
《体育科学》曹卫  出版年:2004
采用文献资料调研和逻辑分析等方法,讨论了体育的人文性和体育教育向“以人为本”的现代体育教育观念转变的总体趋势。“以人为本”将会成为新世纪体育教育的主旋律,成为体育改革与发展的重要方向。体育教育必须融入“以人为本”的基本发...下载全文在线阅读
关键词:体育教育  以人为本  理论  观念  体系  被引量:149
A method for group decision-making based on determining weights of decision makers using TOPSIS
APPLIED MATHEMATICAL MODELLINGYue, Zhongliang  出版年:2011
In general, weights of decision makers (DMs) play a very important role in multiple attribute group decision-making (MAGDM), how to measure the weights of DMs is an interesting research topic. This paper presents a new a...
Direct electrochemistry and electrocatalysis of horseradish peroxidase based on clay-chitosan-gold nanoparticle nanocomposite
BIOSENSORSZhao, Xiaojuan Mai, Zhibin Kang, Xinhuang Zou, Xiaoyong 康信煌  出版年:2008
Gold nanoparticles stabilized by chitosan (AuCS) were hybridized with exfoliated clay nanoplates through electrostatic interaction. The resulting clay-chitosan-gold nanoparticle nanocomposite (Clay/AuCS) was used to modi...
Glucose biosensors based on platinum nanoparticles-deposited carbon nanotubes in sol-gel chitosan/silica hybrid
TALANTAKang, Xinhuang Mai, Zhibin Zou, Xiaoyong Cai, Peixiang Mo, Jinyuan  出版年:2008
A new strategy for fabricating a sensitivity-enhanced glucose biosensor was presented, based on multi-walled carbon nanotubes (CNT), Pt nanoparticles (PtNP) and sol-gel of chitosan (CS)/silica organic-inorganic hybrid co...
中草药对建鲤非特异性免疫功能的影响
《大连水产学院学报》简纪常 吴灶和  出版年:2002
用添加中草药的鲤配合饲料饲喂建鲤(Cyprinnus var.Jian)后,测定了建鲤非特异性免疫指标.饲喂药饵I 10、15、30 d后,氯化硝基四氮唑兰(NBT)阳性细胞数分别为27±3.45、39±6.04和38±...下载全文在线阅读
关键词:非特异性免疫功能  建鲤  中草药  NBT阳性细胞  溶菌酶  免疫增强剂  饲料添加剂  被引量:136
内生菌BS-2菌株的抗菌蛋白及其防病作用
《植物病理学报》何红 蔡学清 关雄 胡方平 谢联辉  出版年:2003
BS-2菌株为一株能在多种植物体内定殖,对多种植物炭疽病具有良好防治效果,并对植物生长具有良好促进作用的枯草芽孢杆菌,其BPY培养液经30%~70%硫酸铵盐析、高温(100℃)处理后,以SDS-PAGE、MALDI-TO...下载全文在线阅读
关键词:内生菌  BS-2菌株  抗菌蛋白  防病作用  定殖  防治效果  植物病害  枯草芽孢杆菌  BPY培养液  被引量:131
Image scrambling encryption algorithm of pixel bit based on chaos map
PATTERN RECOGNITION LETTERSYe, Guodong  出版年:2010
This paper presents an image scrambling encryption algorithm of pixel bit based on chaos map. The algorithm takes advantage of the best features of chaos maps, such as their pseudorandom property, system parameters, sens...
Neurobiology of rodent self-grooming and its value for translational neuroscience
NATURE REVIEWS NEUROSCIENCEKalueff, Allan V. Stewart, Adam Michael Song, Cai Berridge, Kent C. Graybiel, Ann M. Fentress, John C.  出版年:2016
Self-grooming is a complex innate behaviour with an evolutionarily conserved sequencing pattern and is one of the most frequently performed behavioural activities in rodents. In this Review, we discuss the neurobiology o...
Optimization of process parameters for supercritical carbon dioxide extraction of Passiflora seed oil by response surface methodology
JOURNAL OF SUPERCRITICAL FLUIDSLiu, Shucheng Yang, Feng Zhang, Chaohua Ji, Hongwu Hong, Pengzhi 刘书成 邓楚津 洪鹏志 章超桦 吉宏武  出版年:2009
Response surface methodology (RSM) was employed to optimize the process parameters of supercritical carbon dioxide extraction of the passion fruit seed oil. The effects of temperature, pressure and extraction time on the...
Self-assembled natural rubber/silica nanocomposites: Its preparation and characterization
COMPOSITES SCIENCE AND TECHNOLOGYPeng, Zheng Kong, Ling Xue Li, Si-Dong Chen, Yin Huang, Mao Fang  出版年:2007
A novel natural rubber/silica (NR/SiO2) nanocomposite is developed by combining self-assembly and latex-compounding techniques. The results show that the SiO2 nanoparticles are homogenously distributed throughout NR matr...
黄芪的化学成分研究进展
《中成药》温燕梅  出版年:2006
中国药典规定黄芪(Radix Astragali)为豆科植物蒙古黄芪Astragalus membranaceus(Fisch.)Bge.var.mongholicus(Bge.)Hisao或膜荚黄芪Astragalus...下载全文在线阅读
关键词:黄芪  化学成分  综述  被引量:114
辣椒内生枯草芽孢杆菌(Bacillus subtilis)BS—2和BS—1防治辣椒炭疽病研究
《植物病理学报》何红 蔡学清 关雄 胡方平  出版年:2003
辣椒内生枯草芽孢杆菌(Bacillus subtilis)BS-2和BS-1,对胶孢炭疽菌(Colletotrichumgloeosporioides)引起的辣椒苗和果炭疽病有良好的防治效果,菌株培养液对苗炭疽病的防效分...下载全文在线阅读
关键词:辣椒  枯草芽孢杆菌  胶孢炭疽菌  防治效果  菌株培养液  接种  病原菌  被引量:111
智能移动机器人技术现状及展望
《机器人技术与应用》徐国保 尹怡欣 周美娟  出版年:2007
智能移动机器人技术涉及到机器人导航与定位,路径规划,运动控制等。本文综述了移动机器人技术的历史,现状以及未来。首先简要回顾了移动机器人的发展历史,介绍了移动机器人主要体系结构。其次详细论述了移动机器人的主要导航技术,路径...下载全文在线阅读
关键词:导航  路径规划  多传感器信息融合  细胞神经网  高智能情感移动机器人  被引量:111
动植物蛋白源替代鱼粉研究进展
《水产学报》周歧存 麦康森 刘永坚 谭北平  出版年:2005
随着世界人口的增长和人民生活水平的提高,依靠传统的海洋和淡水捕捞已不能满足人们对水产品的需求;而全球性的酷渔滥捕造成了许多优良渔区的逐渐退化,渔获量锐减.近十几年来,水产养殖正逐渐成为提高全球水产品供给量的主要方式.然而...下载全文在线阅读
关键词:动植物蛋白源  鱼粉  生长  生理状况  消化率  被引量:106
Applications of Wireless Sensor Networks in Marine Environment Monitoring: A Survey
SENSORSXu, Guobao Shen, Weiming Wang, Xianbin  出版年:2014
With the rapid development of society and the economy, an increasing number of human activities have gradually destroyed the marine environment. Marine environment monitoring is a vital problem and has increasingly attra...
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