检索结果-南通市图书馆

计算机工程与应用 2004年第21期40卷 210-212页

作者：时书剑王相海辽宁师范大学计算机与信息技术学院

分治算法是解决许多实际问题的重要而有效的方法。该文首先对油井的管道问题进行了分析,然后提出一种基于分治策略的解决方案,并给出了其实现算法,最后对所提出算法的复杂度进行了分析。

关键词：管道分治算法时间复杂性

急性低氧及力竭运动对大鼠骨骼肌肌球蛋白重链(MHC)亚型基因表达的影响

在线全文

学校读者我要写书评

暂无评论

体育科学 2005年第1期25卷 30-33页

作者：潘同斌毛杉杉王瑞元袁建琴扬州大学体育学院江苏扬州225002 北京体育大学人体运动科学学院北京100084

研究急性低氧及力竭运动对大鼠骨骼肌肌球蛋白重链 (MHC)亚型基因表达的影响。取健康 SD雌性大鼠 80只 ,随机分成 4大组 :常氧对照组 (C) ,常氧力竭组 (NE) ,低氧对照组 (HC)和低氧力竭组 (HE)。采用半定量反转录聚合酶链式反应 (RT- P... 详细信息

研究急性低氧及力竭运动对大鼠骨骼肌肌球蛋白重链 (MHC)亚型基因表达的影响。取健康 SD雌性大鼠 80只 ,随机分成 4大组 :常氧对照组 (C) ,常氧力竭组 (NE) ,低氧对照组 (HC)和低氧力竭组 (HE)。采用半定量反转录聚合酶链式反应 (RT- PCR)法 ,测定各组骨骼肌 MHCI、IIa、IIx、IIb4种亚型的 m RNA基因表达。结果表明 ,MHC各亚型 m RNA所占百分比分析显示 ,单纯低氧能刺激 MHC亚型 m RNA表达出现“由慢到快”的趋势 ;力竭运动则能刺激 MHCm RNA表达出现“由快到慢”的趋势。关于 MHC亚型转变在功能上的意义还有待进一步研究。

关键词：急性低氧力竭运动肌球蛋白重链(MHC)亚型基因表达

在线全文

学校读者我要写书评

暂无评论

惯用语的理解:构造还是提取

心理科学 1998年第4期21卷 346-349,370页

作者：佘贤君王莉刘伟张必隐北京师范大学心理系 100875

本研究通过两个视词启动实验，探讨汉语惯用语理解的心理机制。两个实验均采用启动条件下的词汇判断法。实验一的启动刺激是惯用语，目标刺激是解释惯用语比喻意义或字面意义的双字词；实验二的启动刺激是惯用语的前两个字，目标刺激是... 详细信息

本研究通过两个视词启动实验，探讨汉语惯用语理解的心理机制。两个实验均采用启动条件下的词汇判断法。实验一的启动刺激是惯用语，目标刺激是解释惯用语比喻意义或字面意义的双字词；实验二的启动刺激是惯用语的前两个字，目标刺激是解释惯用语比喻意义的双字词。实验结果证明了惯用语是以节点的形式储存在心理词典中，惯用语的理解是一个构造过程。

关键词：预测性比哈意字面意义惯用语理解

在线全文

学校读者我要写书评

暂无评论

让鲜活的思想在数学课堂中流淌

数学教育学报 2005年第1期14卷 16-19页

作者：黄晓学南京师范大学数学与计算机科学学院江苏南京210097

数学是思维的科学,鲜活的思想是指生成思想的思考的行动或过程,而非作为思考的结果的符号.要想让鲜活的思想在数学课堂中流淌,需要做到以下几点:做一个有数学感觉的教师;厚积薄发——好的教学贵在流淌教师鲜活的思想;解除学生的思想约束... 详细信息

数学是思维的科学,鲜活的思想是指生成思想的思考的行动或过程,而非作为思考的结果的符号.要想让鲜活的思想在数学课堂中流淌,需要做到以下几点:做一个有数学感觉的教师;厚积薄发——好的教学贵在流淌教师鲜活的思想;解除学生的思想约束,善待学生的思想幼芽;倡导思路教学,将课堂还原为一种探究的场所;藏息相辅——让鲜活的思想流淌到课外.

关键词：数学课堂教师思想学生导思探究教学约束还原场所

Effects of Weight on the Structure and Dynamics in Complex Networks

在线全文

学校读者我要写书评

暂无评论

Effects of Weight on the Structure and Dynamics in Complex N...

第二届全国复杂动态网络学术论坛

作者： Menghui Li, Ying Fan, Dahui Wang, Jinshan Wu, Zengru Di Department of Systems science, School of Management, beijing normal university, PR. china Department oj Physics & Astronomy, {3. of British Columbia, Vancouver, B.C. Canada

＜正＞Link weight in weighted complex networks provides additional dimension for describing and adjusting the properties of *** with the construction of WS small-world networks based on a regular network,the topological rule of weight is studied by the effects of redistribution of link *** a given regular network with homogeneous link weights,the randomization of weight over the links can decrease the average shortest path significantly,meanwhile the clustering coefficient keeps in the original *** we get the small world effect due to the weight *** effects to the dynamical systems coupled by weighted networks has also been *** of weight can induce the coherent oscillation and the faster response to the impulse for coupled excitable systems

关键词： Weighted networks Random weight Small world effect Coupled dynamical systems

Research on Arachidonic Acid and Eicosapentaenoic Acid Anabolic Metabolism in Diasporangium sp.

在线全文

cnki会议

学校读者我要写书评

暂无评论

Agricultural science & technology 2010年第Z2期 70-72页

作者： DAI Chuan-chao,XU Yu-fen,XIA Shun-xiang,ZHAO Mo,YE Yu-cheng Jiangsu Engineering and technology Research Center for Industrialization of Microbial resources,Jiangsu Key Laboratory for Microbes and Functional Genomics,college of Life {3.,Nanjing normal university,Nanjing 210046

The fatty acids of a strain of Diasporangium *** been analyzed by using *** fatty acids of twenty mutants were *** on these results,the producing of eicosapentaenoic acid(EPA)supposed via 18∶2,18∶3.20∶3.20∶4 which all belong to ω-6 fatty *** ω-3.desaturation was undertaken at arachidonic acid(AA).In addition,mutant strains resulted in enhanced content of AA which could get two times more than initial strain,but no compact on EPA.

关键词： Arachidonic acid Eicosapentaenoic acid Diasporangium sp. Fatty acid metabolism Mutant

Three Open On- line CombinatorialOptimization Problems

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems science and Systems Engineering 2001年第1期13卷 125-128页

作者： ZHANG Yu zhong1, LI Shu jin 2, DENG Xiao tie3.1.Institute of Operations Research, Qufu normal university, 273.65 2.Shandong Educational college, Jinan 250013.3.Deptartment of CS, City university of Hong Kong, Kowloon, HK Institute of Operations Research Qufu Normal University 273165 Shandong Educational college Jinan 250013 Deptartment of CS City University of Hong Kong Kowloon HK

：We present three open combinatorial optimization problems from the standpoint of competitive analysis, in the case that there is no complete information.

关键词： Competitive analysis k-server problem on-line algorithm scheduling

Study on Ecological Security and Ecological Compensation in the Songhua River Basin

在线全文

学校读者我要写书评

暂无评论

Study on Ecological Security and Ecological Compensation in ...

工程和商业管理国际学术会议

作者： Tang Zi 1 2 1. School of Tourism and Cuisine Harbin university of Commerce Harbin P.R.C 2. School of Environment beijing normal university beijing P.R.C

The mechanism of ecological compensation is the hotspot in research of ecological economy, especially about the river basin. On the basis of analyzing the problems of ecological safety, this paper explores the mechanism of ecological compensation in the Songhua River Basin. The results showed ecological safety in the Songhua River Basin was threatened by increasing water pollution, unreasonable use of water resources and wetlands shrinking and so on. Therefore, the establishment of ecological compensation should define the subject and object of compensation, adopt reasonable compensation standard, and explore corresponding compensation ways so as to improve the sustainable development in the Songhua River Basin.

关键词： the Songhua River Basin ecological security ecological compensation

Up-regulation of GSNO Reductase in Mice Lungs by Formaldehyde Inhalation

在线全文

cnki会议

学校读者我要写书评

暂无评论

Up-regulation of GSNO Reductase in Mice Lungs by Formaldehyd...

2007中国科协年会

作者： Cao Yi Yan Yan Yang Xu~* Ke Ke Peng Guangyin Zhu Yan Zhao Wei Laboratory of Environmental science,college of Life science,Huazhong {3. university,Wuhan 43.079,china

Recent work showed that GSNO reductase(GSNOR)mediates the equilibrium of nitric oxide(NO) and the adduct molecules,S-nitrosothiols(SNOs)in lungs of asthmatic mice,and thus,plays a central role in the physiology and patho-physiology in lung *** further understand the role of GSNOR in mediating asthma development,it is essential to examine the possible factors that can activate GSNOR in *** present study,male Kun Ming mice were divided into 3.testing groups(n=6 each)and inhaled with formaldehyde(FA) of 0,1.0,3.0 mg/m continuously for 72h,3.,*** after exposure,GSNOR RT-PCR and enzyme activity assay were performed in lungs of *** showed that GSNOR is expressed in lungs of mice,and GSNOR expression was significantly up regulated in lungs of 3.0 mg/m FA inhaled group(compared with 0 mg/m FA inhaled group,p＜0.05).Consistent with RT-PCR results,enzyme activity assay showed that GSNOR activity increased in a dose-dependent manner,and the reductase activity increased significantly in lungs both of 1.0 mg/m and 3.0 mg/m FA inhaled group(compared with 0 mg/m FA inhaled group,p＜0.01). The results indicated that gaseous FA could activate GSNOR in *** findings also suggested that small metabolic substrates of GSNOR,like FA,could activate GSNOR and might be key risk factors for the rise in asthma cases.

关键词： Formaldehyde GSNO reducrase S-nitrosothiol asthma

Crystal Growth and Terahertz Spectroscopy Study of Iodoform-Sulfur Compound

在线全文

cnki会议

学校读者我要写书评

暂无评论

Crystal Growth and Terahertz Spectroscopy Study of Iodoform-...

第14届全国晶体生长与材料学术会议

作者： Xu Sua, Shichao Jianga, Gang Zhanga, Tao Liua, Jingui Qina,* aDepartment of Chemistry, Wuhan university, Hubei Wuhan 43.072 Yan Tianb, Guozhong Zhaob bDepartment of Physics, Capital normal university, {3., 10003., china,Changtian Chenc c{3. Center for Crystal Research and Development, Technical Institute of Physics and Chemistry, Chinese Academy of science, {3. 100080