检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

语段理论的优势及其理论创新

现代外语 2022年第4期45卷 565-574页

作者：程工田启林浙江工业大学外国语学院浙江省杭州市310023 浙江工业大学

语段理论是近期最简方案最重要的机制之一,在句法推导中发挥着中枢作用。本文结合该理论二十多年来的研究成果,对其做深入的审视和思考。结果发现,语段理论之所以能够展现出勃勃生机,是因为它基于第三因素原则派生出了语言推导的优化设... 详细信息

语段理论是近期最简方案最重要的机制之一,在句法推导中发挥着中枢作用。本文结合该理论二十多年来的研究成果,对其做深入的审视和思考。结果发现,语段理论之所以能够展现出勃勃生机,是因为它基于第三因素原则派生出了语言推导的优化设计,摆脱了专设的经济原则,形成了单一循环的理论模型。需要特别指出的是,语段理论虽然存在一定的问题和不足,但在进行理论修正和发展时,所提构想不应违背上述理论模型。

关键词：语段理论局域性合并操作

A Lens Assisted Phase Microscope Based on Ptychography

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2012年第8期29卷 143-145页

作者： PAN Xing-Chen LIN Qiang LIU cheng ZHU jian-Qiang Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800

Based on the recently developed ptychographical iterative engine(PIE),we suggest a lens assisted microscopy to realize quantitative phase imaging without using *** sample is imaged with a lens system;a pinhole on the image plane scans the image at a proper step interval;the diffraction pattern is recorded simultaneously by a CCD at Fresnel *** a slightly changed PIE algorithm,the phase image of the sample can be accurately reconstructed from the recorded diffraction *** main advantage of this suggested method lies in its capability to retrieve the phase information from the recorded intensity directly,and thus it has more flexibility over conventional interferometric *** feasibility of the suggested method is verified by reconstructing the modulus and phase image of a biological sample from a set of 10 by 10 diffraction patterns,and the result matches the analysis well.

关键词： record image slightly

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

众包:一种云制造的运作模式

计算机集成制造系统 2017年第6期23卷 1167-1175页

作者：程幼明吴英龚本刚姚丽安徽工程大学管理工程学院安徽芜湖241000 安徽国防科技职业学院管理工程系安徽六安237011

为合理配置与利用企业生产能力资源,以社会闲置资源能力的利用为关注焦点,在分析闲置资源能力的成因和特点的基础上,通过对云制造的内涵和特点的界定,明确云制造运作过程中的关键问题是在时间、成本、质量等约束下对分散、闲置的资源实... 详细信息

为合理配置与利用企业生产能力资源,以社会闲置资源能力的利用为关注焦点,在分析闲置资源能力的成因和特点的基础上,通过对云制造的内涵和特点的界定,明确云制造运作过程中的关键问题是在时间、成本、质量等约束下对分散、闲置的资源实施虚拟集成与匹配,提出了云制造实质上是一种虚拟定制化供应链线上到线下模式,并将其与成功运用于设计服务虚拟运作的众包商业模式进行比较分析和关系研究;提出了众包是云制造战略实施的一种有效运作模式,并构建了云制造的众包系统,设计出该系统的工作流程,从众包角度实现了云制造;分析了云制造下众包模式的时间、成本和价格等方面的优势,进一步说明了云制造众包实现的有效性,为云制造实施提供了一种新思路,并进一步拓展了众包的研究内容和应用范围。

关键词：云制造众包虚拟定制化供应链线上到线下模式

From tuberculosis bedside to bench:UBE2B splicing as a potential biomarker and its regulatory mechanism

在线全文

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2023年第3期8卷 1282-1295页

作者： Mengyuan Lyu jian Zhou Yanbing Zhou Weelic Chong Wei Xu Hongli Lai Lu Niu Yang Hai Xiaojun Yao Sheng gong Qinglan Wang Yi Chen Yili Wang Liyu Chen Zengwanggema Jiongjiong Zeng chengdi Wang Binwu Ying Department of Laboratory Medicine West China HospitalSichuan UniversityChengduSichuan 610041China Department of Thoracic Surgery West China HospitalSichuan UniversityChengduSichuan 610041China Sidney Kimmel Medical College Thomas Jefferson UniversityPhiladelphiaPA 19107USA Department of Biostatistics Princess Margaret Cancer CentreUniversity Health NetworkTorontoOntario M5G 1L7Canada Dalla Lana School of Public Health University of TorontoTorontoON M5T 3M7Canada Institute of Thoracic Oncology West China HospitalSichuan UniversityChengduSichuan 610041China Department of Radiology Thomas Jefferson University HospitalPhiladelphiaPA 19107USA Department of Thoracic Surgery The Public and Health Clinic Centre of ChengduChengduSichuan 610066China Department of Respiratory and Critical Care Medicine Frontiers Science Center for Disease-related Molecular NetworkWest China HospitalSichuan UniversityChengduSichuan 610213China Department of Infectious Diseases West China HospitalSichuan UniversityChengduSichuan 610041China Zhaojue People’s Hospital of Liangshan Prefecture Liangshan PrefectureSichuan 616150China Department of Laboratory Medicine Ganzi People’s HospitalGanzi PrefectureSichuan 626099China

Alternative splicing(AS)is an important approach for pathogens and hosts to remodel ***,tuberculosis(TB)-related AS has not been sufficiently *** we presented the first landscape of TB-related AS by long-read sequencing,and screened four AS events(S100A8-intron1-retention intron,RPS20-exon1-alternaitve promoter,KIF13B-exon4-skipping exon(SE)and UBE2B-exon7-SE)as potential biomarkers in an in-house *** validations in an in-house cohort-2(2274 samples)and public datasets(1557 samples)indicated that the latter three AS events are potential promising biomarkers for TB diagnosis,but not for TB progression and *** excellent performance of classifiers further underscored the diagnostic value of these three *** analyses indicated that UBE2B-exon7-SE splicing was not affected by confounding factors and thus had relatively stable *** splicing of UBE2B-exon7-SE can be changed by heat-killed mycobacterium tuberculosis through inhibiting SRSF1 *** heat-killed mycobacterium tuberculosis stimulation,231 ubiquitination proteins in macrophages were differentially expressed,and most of them are apoptosis-related *** together,we depicted a global TB-associated splicing profile,developed TB-related AS biomarkers,demonstrated an optimal application scope of target biomarkers and preliminarily elucidated mycobacterium tuberculosis-host interaction from the perspective of splicing,offering a novel insight into the pathophysiology of TB.

关键词： tuberculosis stimulation diagnosis

合同诈骗罪及其合同效力的司法认定——以“托盘贸易案”展开

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

思想战线 2020年第6期46卷 96-105页

作者：张慧成功湖南工商大学法学与公共管理学院湖南省廉政建设协同创新中心湖南长沙410205 中国社科院法学研究所

涉诈骗类型的刑民交叉案件属疑难复杂案件,其中,尤以合同诈骗罪与其合同效力的认定问题最为突出。就实践中刑民交叉案件的关联形态来说,“先刑后民”“刑民并行”虽为不少学者所主张,但在实体层面,“先民后刑”更具理论、立法、司法的... 详细信息

涉诈骗类型的刑民交叉案件属疑难复杂案件,其中,尤以合同诈骗罪与其合同效力的认定问题最为突出。就实践中刑民交叉案件的关联形态来说,“先刑后民”“刑民并行”虽为不少学者所主张,但在实体层面,“先民后刑”更具理论、立法、司法的合理性,能为合同欺诈与合同诈骗罪的界分提供一定的判断依据。对于托盘融资活动中易被认定为合同诈骗罪的几种情况,要立足于合同诈骗罪的构造,重视限制解释与综合判断。如果行为人没有隐瞒影响合同性质或目的实现的“重要事项”,即便存在欺骗方法,也不是合同诈骗罪。基于刑民规范的不同价值,对涉诈骗犯罪中的合同效力的认定,应当坚持在私法范畴内,根据《民法典》关于民事法律行为效力规则进行教义学分析,此类合同不符合法律规定的无效情形,而是可撤销类型的合同。

关键词：刑民交叉民事欺诈合同诈骗罪法秩序统一性合同效力

在线全文

学校读者我要写书评

暂无评论

输油管道过渡过程最优控制策略

中国石油大学学报（自然科学版） 2008年第2期32卷 102-107页

作者：才建宫敬李小平中国石油大学城市油气输配技术北京市重点实验室

分析了水击产生的原因,结合瞬变流动控制的基本理论,分析了管道不稳定流动的水击保护的各种方法,基于鲁皖成品油管线部分水击工况的超前保护的仿真模拟,指出超前保护控制系统的优缺点,提出了过渡过程主动控制决策系统的研究方法。以大... 详细信息

分析了水击产生的原因,结合瞬变流动控制的基本理论,分析了管道不稳定流动的水击保护的各种方法,基于鲁皖成品油管线部分水击工况的超前保护的仿真模拟,指出超前保护控制系统的优缺点,提出了过渡过程主动控制决策系统的研究方法。以大落差输油管道停泵事故为例,采用空间特征线方法与最优化方法对管道的限压及限时反问题进行了求解,得到了停泵保护的阀门最优调节规律及系统最小水击压力。实例分析结果证明了输油管道主动控制系统的优越性,对输油管道调度控制具有实际的指导意义。

关键词：超前保护主动控制反问题空间特征线法最优化方法仿真

Daphnane Diterpenoids from Trigonostemon lii and Inhibition Activities Against HIV‑1

在线全文

学校读者我要写书评

暂无评论

Natural Products and Bioprospecting 2020年第1期10卷 37-44页

作者： cheng-jian Tan Shi-Fei Li Ning Huang Yu Zhang Ying-Tong Di Yong-Tang Zheng Xiao-jiang Hao State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650204YunnanPeople’s Republic of China Key Laboratory of Bioactive Peptides of Yunnan Province/Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences Center for Biosafety Mega-ScienceKunming Institute of ZoologyChinese Academy of SciencesKunming 650223YunnanPeople’s Republic of China School of Ethnic Medicine Guizhou Minzu UniversityGuiyang 550025GuizhouPeople’s Republic of China Institute of Molecular Science Shanxi UniversityTaiyuan 030006ShanxiPeople’s Republic of China School of Basic Medical Kunming Medical UniversityKunming 650500YunnanPeople’s Republic of China

Natural products are the important source for the discovery of more potent anti-HIV *** this study,six daphnane diterpenoids including three unreported structures were isolated from Trigonostemon lii,which showed signifcant activities against HIV-1 strains replication in the nanomolar/picomolar ***,these diterpenoids signifcantly inhibited the fusion of H9/HIV-1 IIIB cells with uninfected C8166 cells,with the EC50s from 1.06 to 8.73 ng/mL,and did not show any inhibition activities against HIV-1 reverse ***,all of the diterpenoids shows signifcant inhibitions against T20-resistan HIV-1 strains,PNL4-3gp41(36G)V38E,N42S and pNL4-3gp41(36G)V38A,*** results revealed that the six diterpenoids could be a new type of potential lead candidate as an HIV entry inhibitor,particularly for those infected by T20-resistant variants.

关键词： Trigonostemon lii Daphnane diterpenoid Trigonolactone Anti-HIV

The Operation Efficiency Evaluation for Listed Companies of China Aviation Industry Based on DEA and Malmquist Index

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Plant Engineering and Management 2012年第4期17卷 223-229页

作者： XIA Wei-li cheng Jun-heng WU Peng gong Shu-yan School of Management Northwestern Polytechnical University

The data envelopment analysis （DEA） is used to evaluate operation efficiency of 17 listed companies in China aviation industry from 2006 to 2011, and make longitudinal analysis for the operation efficiency. In addition, the reason of changing efficiency is dynamically evaluated by Malmquist productivity index. The empirical results show that average operation efficiency of 17 listed companies in China aviation industry is less than 1, which means that the operation activities of aviation industry exist diseconomies characteristic, technological progress efficiency is a major influenced factor

关键词： aviation industry data envelopment analysis operation efficiency Malmquist index

In situ constructing of ultrastable ceramic@graphene core-shell architectures as advanced metal catalyst supports toward oxygen reduction

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2017年第6期26卷 1160-1167页

作者： HuiWu Tao Peng Zongkui Kou Kun cheng Jie Zhang jian Zhang Tian Meng Shichun Mu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina GAC New Energy Automobile Co. Ltd.Guangzhou 511400GuangdongChina

The changeable structure of 2 D graphene nanosheets makes the Pt-based nanoparticles（NPs） possess a low efficiency toward oxygen reduction reaction（ORR） and a short lifetime for proton exchange membrane fuel cells. Thus, a unique Ti C@graphene core-shell structure material with low surface energy is designed and prepared by an in situ forming strategy, and firstly applied as a stable support of Pt *** as-prepared Pt/GNS@Ti C catalyst presents a high activity. Especially, its ORR stability is remarkably improved. Even after 15000 potential cycles, the half-wave potential and mass activity toward ORR have almost no change. This can be attributed to that the graphene nanosheet existing in a sphere shape effectively avoids the restacking or folding caused by the giant surface tension in 2 D graphene nanosheets,impeding the decrease of the triple-phase boundary on Pt NPs. Significantly, the power density of fuel cells with our novel catalyst reaches 853 m V cmunder a low Pt loading(0.25 mg Pt cm) and H/Air conditions. These indicate the new ceramic@graphene core-shell nanocomposite is a promising application in fuel cells and other fields.

关键词： Graphene Core-shell Oxygen reduction Electrocatalyst Stability PEM fuel cell