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

实验一步确定极化纠缠纯化

Science Bulletin 2022年第6期67卷 593-597,M0003页

作者：黄岑潇胡晓敏柳必恒周澜盛宇波李传锋郭光灿 CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China College of Electronic and Optical Engineering Nanjing University of Posts and TelecommunicationsNanjing 210003China School of Science Nanjing University of Posts and TelecommunicationsNanjing 210003China Synergetic Innovation center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Institute of Quantum Information and Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China

纠缠纯化是从低品质的纠缠态中提取出高品质纠缠的方法.它是量子中继的关键步骤,决定量子通信方案的效率和通信率,因此是长距离量子通信和量子网络的核心.本文报道了首个利用极化-空间超纠缠实现确定的纠缠纯化实验.纯化后极化纠缠的保... 详细信息

纠缠纯化是从低品质的纠缠态中提取出高品质纠缠的方法.它是量子中继的关键步骤,决定量子通信方案的效率和通信率,因此是长距离量子通信和量子网络的核心.本文报道了首个利用极化-空间超纠缠实现确定的纠缠纯化实验.纯化后极化纠缠的保真度从0.268上升到0.989.在鲁棒的空间纠缠辅助下,相比于采用自发参量下转换纠缠源的两拷贝纯化方案,整个纯化效率预计可提高约109倍.该研究成果在实验室实现了确定的纠缠纯化,大幅提升了纯化效率,可为未来实现高效率量子中继提供有力的技术支撑.

关键词：量子通信纠缠纯化量子中继自发参量下转换纠缠辅助量子网络保真度纠缠态

在线全文

学校读者我要写书评

暂无评论

面板开裂对大坝渗流特性影响的有限元分析

水电能源科学 2022年第3期40卷 118-121,113页

作者：潘正阳岑威钧刘波河海大学水利水电学院江苏南京210098

面板堆石坝工程中混凝土面板常会出现不同程度的裂缝,可能对坝体防渗造成安全隐患。通过合理模拟不同深度、类型、位置、大小及分布的面板裂缝进行大坝渗流场的有限元分析,获得面板裂缝对大坝渗流量及浸润线等渗流要素的影响规律。结果... 详细信息

面板堆石坝工程中混凝土面板常会出现不同程度的裂缝,可能对坝体防渗造成安全隐患。通过合理模拟不同深度、类型、位置、大小及分布的面板裂缝进行大坝渗流场的有限元分析,获得面板裂缝对大坝渗流量及浸润线等渗流要素的影响规律。结果表明,面板裂缝未贯穿时,对坝体渗流特性影响很小;单一贯穿性裂缝会显著影响局部水头线分布,且与裂缝位置和大小明显呈正相关;多裂缝条件下,大坝渗流量明显增大,浸润线明显抬高。研究成果可为实际面板堆石坝工程防渗设计与运行管理提供参考。

关键词：面板堆石坝面板裂缝逐层破坏渗流特性

非马尔科夫耗散系统长时演化下的极限环振荡现象

在线全文

学校读者我要写书评

暂无评论

物理学报 2015年第21期64卷 169-174页

作者：游波岑理相四川大学物理科学与技术学院成都610065

本文研究结构化环境中非马尔科夫耗散系统在长时演化下可能出现的极限环振荡现象.对于欧姆型谱密度环境中的二能级系统,由于体系只允许一个束缚态模,给定初态系统在Bloch空间的长时演化将收敛于一个极限环.研究揭示了极限环半径与环心... 详细信息

本文研究结构化环境中非马尔科夫耗散系统在长时演化下可能出现的极限环振荡现象.对于欧姆型谱密度环境中的二能级系统,由于体系只允许一个束缚态模,给定初态系统在Bloch空间的长时演化将收敛于一个极限环.研究揭示了极限环半径与环心位置同环境谱密度函数间的关系.对于多带光子晶体环境中的二能级系统,由于其可以存在多个束缚态,研究展现了系统在长时演化下可能出现的收敛于环面或周期或准周期的振荡行为.有关环面的特征量与环境谱密度间的量化关系同样得以刻画.论文随后讨论了两比特系统关联量在局域非马尔科夫耗散环境中长时演化可能出现的特征行为.

关键词：开放量子系统非马尔科夫耗散极限环束缚态

Simultaneous oxidation of NO,SO_2 and Hg^0 from flue gas by pulsed corona discharge

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2009年第3期21卷 328-332页

作者： XU Fei,LUO Zhongyang,CAO Wei,WANG Peng,WEI bo,GAO Xiang,FANG Mengxiang,cen Kefa State key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China. State key Laboratory of Clean Energy Utilization Zhejiang University Hangzhou 310027 China

A process capable of simultaneously oxidizing NO, SO2, and Hg^0 was proposed, using a nigh-voltage and short-duration positive pulsed corona discharge. By focusing on NO, SO2, and Hg^0 oxidation efficiencies, the influences of pulse peak voltage, pulse frequency, initial concentration, electrode number, residence time and water vapor addition were investigated. The results indicate that NO, SO2 and Hg^0 oxidation efficiencies depend primarily on the radicals （OH, HO2, O） and the active species （O3, H2O2, etc.） produced by the pulsed corona discharge. The NO, SO2 and Hg^0 oxidation efficiencies could be improved as pulse peak voltage, pulse frequency, electrode number and residence time increased, but they were reduced with increasing initial concentrations. By adding water vapor, the SO2 oxidation efficiency was improved remarkably, while the NO oxidation efficiency decreased slightly. In our experiments, the simultaneous NO, SO2, and Hg^0 oxidation efficiencies reached to 40%, 98%, and 55% with the initial concentrations 479 mg/m^3, 1040 mg/m^3, and 15.0 μg/m^3, respectively.

关键词： pulsed corona discharge NO SO2 Hg^0 radical active species oxidation efficiency

社会性别视角下农转非居民社会资本对吸烟饮酒行为的影响研究

在线全文

学校读者我要写书评

暂无评论

中国健康教育 2023年第12期39卷 1114-1119页

作者：谢雨岑高博陈钧涵四川大学华西公共卫生学院(华西第四医院) 四川成都610041

目的调查农转非居民社会资本和吸烟饮酒行为的性别差异,并探讨二者之间的关系。方法采用多阶段分层随机抽样方法,抽取成都市1620名农转非居民进行面对面问卷调查。构建Logistic回归模型分析不同性别农转非居民的社会资本对其吸烟饮酒行... 详细信息

目的调查农转非居民社会资本和吸烟饮酒行为的性别差异,并探讨二者之间的关系。方法采用多阶段分层随机抽样方法,抽取成都市1620名农转非居民进行面对面问卷调查。构建Logistic回归模型分析不同性别农转非居民的社会资本对其吸烟饮酒行为的影响。结果男性吸烟率和饮酒率分别为48.0%和33.7%,女性吸烟率和饮酒率分别为2.3%和6.6%。控制混杂后的Logistic回归结果显示,家庭社会资本高分组的女性吸烟率较低分组低,OR值为0.337(95%CI:0.155~0.731);个体社会资本高分组的男性饮酒率较低分组高,OR值为2.187(95%CI:1.297~3.687)。此外,年龄、慢性病、合并饮酒或吸烟也会影响农转非居民的吸烟饮酒行为。结论不同性别农转非居民的吸烟、饮酒行为以及社会资本存在一定差异,故控烟限酒政策的制定,不仅要考虑性别和社会资本等因素,也应重点关注农转非居民等特殊群体。

关键词：社会性别农转非居民社会资本吸烟饮酒

速度匹配加机动辅助的滚转弹滚转角空中对准法

在线全文

学校读者我要写书评

暂无评论

兵工学报 2019年第7期40卷 1390-1400页

作者：彭博岑梦希中国航天空气动力技术研究院彩虹无人机科技有限公司

针对卫星与惯性速度匹配法对滚转角的空中对准精度不高这一问题,提出一种卫星与惯性速度匹配加机动辅助的方法。在卫星与惯性组合制导方式下,以可观测性分析为基础,机动辅助采取纵向比例导引加重力补偿制导律形式,结合卡尔曼滤波完成滚... 详细信息

针对卫星与惯性速度匹配法对滚转角的空中对准精度不高这一问题,提出一种卫星与惯性速度匹配加机动辅助的方法。在卫星与惯性组合制导方式下,以可观测性分析为基础,机动辅助采取纵向比例导引加重力补偿制导律形式,结合卡尔曼滤波完成滚转角的空中对准,并分析机动辅助策略在不同导航比、重力补偿系数下对滚转角对准效果的影响,以及弹体名义转速拉偏、惯性组件误差拉偏对机动辅助策略的影响。仿真结果表明:在考虑卫星定速及惯性组件误差情况下,该方法能够在全弹道内实现滚转角的精对准,误差在2°以内,收敛时间10s;可通过调节重力补偿系数改变对准的速度、精度,导航比用来保证制导稳定。卫星与惯性速度匹配加机动辅助的方法相比于卫星与惯性速度匹配法,对准效果更好;在弹体名义转速以及惯性组件误差存在拉偏情况下,对准效果受影响较小,抗干扰性较强。

关键词：滚转弹速度匹配机动辅助卡尔曼滤波滚转角空中对准

Apoptosis Induced by Zinc Deficiency in Rat Osteoblast:Possible Involvement of Protein Kinase C

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 1999年第3期12卷 101-109页

作者： cen XIAO-bo WANG RUI-SHU AND WANG HANG(Medical Experimeatel center, the First Hospital of West China University of Medical Sciences (WCUMS), Chengdu 610041, China Derpartment of Public of Health (WCUMS) Department of Stomatology (WCUMS)) Medical Experimental center First Hosp. W. China Univ. Med. Sci. Chengdu 610041 China

Ra ostcobasts were isolated from the 21-day fetal rat calvchas. The cells were grown in DMEM Plus 10% FBS, and were treated for 24 h. with 10 μmol/L TPEN or 10 μmol/L TPEN supplemented with 10 μmol/L Zn2+. Apoptosis of osteoblasts were measured by fiow cytometry, electron microscopy and DNA fragmentation analyzed by gel elecmphoresis. In addition, IP3 production and PKC activity were measmed in ordr to show whether they are involved in apoptosis in osteoblast induced by alnc deficiency. The results showed that 10 μmol/L TPEN could induce apoptosis in osteoblast in 24 h. But cells ed with 10μmol/L TPEN supplemented with 10 μmol/L Zn2+ showed no apoptotic changs in 24 h. TPEN significantly reduced the formation of IP3 and PKC activity after 24 h incubation. No differences were observed between the cells treated with TPEN supPlemented with Zn2+ simulaneosly and the untreated cells. It can be inferred that apoptosis induced by ainc deficiency may be due to the decreased activity of PKC which is impaired by reduced formation of IP3.

关键词： Apoptosis Induced by Zinc Deficiency in Rat Osteoblast Cell cell

Network pharmacology and verification experiment-based prediction of active components and potential targets of Alpiniae Oxyphyllae Fructus-Saposhnikoviae Radix(Yizhiren-Fangfeng)for treatment of diabetic kidney disease

在线全文

学校读者我要写书评

暂无评论

Traditional Medicine Research 2023年第5期8卷 11-20页

作者： Xian Wang Chang Liu Huan Jiang bo-cen Chen Xu Yang Man Xiao Yi-Qiang Xie Kai Li School of Traditional Chinese Medicine Hainan Medical UniversityHaikou 571199China School of Basic Medicine and the Life Sciences Hainan Medical UniversityHaikou 571199China

Background:In this study,we analyzed the potential active components,related crucial targets and possible signaling pathway mechanisms of Alpiniae Oxyphyllae Fructus and Saposhnikoviae Radix(AOF-SR)herb pairs in the treatment of diabetic kidney disease(DKD)using network pharmacology and verification ***:The active compounds and potential targets of AOF-SR were derived from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform,The Encyclopedia of Traditional Chinese Medicine,and PubChem databases,and the potential therapeutic targets of DKD were derived from the OMIM,Drugbank,and DisGeNET ***“compounds-diseases-targets”network was constructed using Cytoscape *** functionality in Cytoscape is being used to screen important targets for AOF-SR treatment of *** Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analysis of important targets were performed using DAVID *** addition,according to the predicted results of network pharmacology,HK-2 cells were used to construct DKD model for verification ***-2 cells were divided into control group,high glucose(HG)group and AOF-SR(HG+AOF-SR)group to detect survival rate and expression of key proteins in NF-κB and PI3K/Akt signaling ***:A total of 38 compounds were selected from AOF-SR,of which 23 were Alpiniae Oxyphyllae Fructus and 15 were Saposhnikoviae *** enrichment analysis of 82 important targets,88 signaling pathways were identified;some of these pathways,such as the NF-κB,PI3K-Akt,IL-17,and JAK/STAT signaling pathways,regulate the pathological process of *** verification experiment,the HK-2 cells survival rate was higher in the HG+AOF-SR group than in the HG group(P<0.05).Moreover,western blotting results showed that the expression levels of NF-κB,p-PI3K,and p-Akt in HG+AOF-SR group were significantly lower than those in HG group(P<0.05).Conclusion:Overall,this study revealed the active co

关键词： network pharmacology traditional Chinese medicine Alpiniae Oxyphyllae Fructus Saposhnikoviae Radix HK-2 cells diabetic kidney disease

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

产业速率分异情景下创新节奏对绩效的影响

科研管理 2020年第9期41卷 1-11页

作者：岑杰吴波浙江工商大学工商管理学院浙江杭州310018 浙江工商大学浙商研究院浙江杭州310018

从纵向时间的角度来看,企业的创新过程呈现出一定的创新轨迹,"节奏"是这一轨迹中重要的时间要素。本文基于机会观的解释逻辑,探索产业速率分异情景下创新节奏的绩效机制问题。利用8个子行业156个上市公司的468个企业年数据,采用可行广... 详细信息

从纵向时间的角度来看,企业的创新过程呈现出一定的创新轨迹,"节奏"是这一轨迹中重要的时间要素。本文基于机会观的解释逻辑,探索产业速率分异情景下创新节奏的绩效机制问题。利用8个子行业156个上市公司的468个企业年数据,采用可行广义最小二乘法(FGLS),结果表明:(1)在不同的产业速率环境中,创新节奏-企业绩效间呈现不同的关系模式,具体而言,在高速率产业中,创新节奏-企业绩效间呈倒U型关系,在低速率产业中,创新节奏对企业绩效有显著正向影响;(2)组织冗余在创新节奏-企业绩效间起正向调节作用。本文的研究调和了现有创新节奏-企业绩效间关系的结论,也为企业安排特定的创新节奏提供了启示。

关键词：产业速率创新节奏企业绩效