检索结果-南通市图书馆

Blockchain-based continuous data integrity checking protocol with zero-knowledge privacy protection

Digital Communications and Networks 2022年第5期8卷 604-613页

作者： Yiting Huang Yong yua.Huilin li Yannan li Aikui Tian School of Computer Science Shaanxi Normal UniversityXi'an710062China School of Cyber Science and Technology Beihang UniversityBeijing100191China School of Computing and Information Technology University of WollongongWollongongNSW2522Australia School of Computer Science and Technology Shandong University of TechnologyZibo255000China

The cloud computing technology has emerged,developed,and matured in recent years,consequently commercializing remote outsourcing storage *** increasing number of companies and individuals have chosen the cloud to store their ***,accidents,such as cloud server downtime,cloud data loss,and accidental deletion,are serious issues for some applications that need to run around the *** some mission and business-critical applications,the continuous availability of outsourcing storage services is also necessary to protect users'outsourced data during ***,ensuring the continuous availability of data in public cloud data integrity auditing protocols leads to data privacy issues because auditors can obtain the data content of users by a sufficient number of storage ***,protecting data privacy is a burning *** addition,existing data integrity auditing schemes that rely on semi-trusted third-party auditors have several security problems,including single points of failure and performance *** deal with these issues,we propose herein a blockchain-based continuous data integrity checking protocol with zero-knowledge privacy *** realize a concrete construction by using a verifiable delay function with high efficiency and proof of retrievability,and prove the security of the proposal in a random oracle *** proposed construction supports dynamic updates for the outsourced *** also design smart contracts to ensure fairness among the parties ***,we implement the protocols,and the experimental results demonstrate the efficiency of the proposed protocol.

关键词： Continuous availability Verifiable delay function Zero-knowledge privacy Blockchain

来源：

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

Investigation of the interaction between HIV-1 DNA and cyclic peptides by electrospray ionization mass spectrometry

引用

Chinese Chemical Letters 2009年第3期20卷 330-333页

作者： Yi Quan liu Hui Hui li Yun Hua Ye Gu yua Beijing National Laboratory for Molecular Sciences Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education Department of Chemical Biology College of Chemistry and Molecular Engineering Peking University Beifing 100871 China School of Chemistry and Environmental Science Nanjing Normal University Nanjing 210097 China

The interaction between HIV-1 DNA and five cyclic peptides （CP1-CP5） was investigated using electrospray ionization mass spectrometry （ESI-MS）. It revealed that CP1 [c（Ala-Tyr-Leu-Ala-Gly）] and CP4 [c（Pro-D-Tyr... 详细信息

关键词： HIV-1 DNA Cyclic peptide ESI-MS

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Colchicine Inhibited the Expression of Tissue Inhibitor of Metalloprotenase-1 and Interleukin-6 in Cultured Activated Hepatic Stellate Cells

引用

Wuhan University Journal of Natural Sciences 2006年第3期11卷 720-724页

作者： li Zesong CAI Shaoxi JIANG yua.GUO RuiJun ZHANG Wen College of Bioengineering Chongqing University Chongqing 400044China 不详 Shenzhen Yishengtang Biological Products Co. lad Shenzhen 518054Guangdong China Shenzhen Shajing People＇s Hospital Shenzhen 518104 GuangdongChina

Cultured HSCs were treated colchicine with different concentrations for 12 h, respectively. The effects of eolehicine on HSCs growth were measured by MTT assay. Effects of eolchicine on gene expression of HSCs were analysed by using a self-made oligonucleotide mieroarray. Colehieine inhibited HSCs growth in a dose-dependent manner. After 12 h of treatment with 6.25 mg/L of colehicine, the expression of tissue inhibitor of metalloprotenase-1 （TIMP-1） and the expression of interleukin-6 （IL-6） in HSCs were downregulated by 2.3 folds and 2.1 folds, respectively. These results suggest that colchieine＇s beneficial effects may, at least in part, owe to the inhibitory to the proliferation of HSCs and down regulation of the expression of both TIMP1 and IL-6 in HSCs.

关键词： microarray colchicines tissue inhibitor of metalloprotenase-1 liver fibrosis hepatic stellate cells interleukin-6

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

低位直肠癌前切除术中预防性造口术式的选择

引用

实用临床医学（江西） 2024年第1期25卷 121-125页

作者：刘怡君李来元杨熊飞甘肃中医药大学第一临床医学院甘肃省人民医院肛肠科兰州730000

预防性造口指在低位前切除术后将末端回肠或者横结肠进行临时性造口处理,用于转流粪便以达到减少吻合口漏造成的感染等并发症的发生率的效果。预防性造口术式的选择对降低低位直肠癌术后并发症的发生起到很重要的作用。目前临床中袢式... 详细信息

预防性造口指在低位前切除术后将末端回肠或者横结肠进行临时性造口处理,用于转流粪便以达到减少吻合口漏造成的感染等并发症的发生率的效果。预防性造口术式的选择对降低低位直肠癌术后并发症的发生起到很重要的作用。目前临床中袢式回肠造口已得到广泛应用,在袢式回肠造口中不同支撑方式的选择对患者术后并发症的发生,以及患者术后舒适度、自我护理等有不同的影响,现阶段造口方式主要包括传统的支撑棒袢式回肠造口术、皮桥袢式回肠造口术、改良自闭式回肠造口术、一针法回肠造口术等。文章综述关于目前常用的几种预防性造口术式的研究进展,旨在为临床医生选择预防性造口术式提供参考。

关键词：预防性造口低位直肠癌前切除术回肠造口直肠癌

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

基于工业固废的碳化固化软弱渣土性能变化研究

引用

工程与建设 2024年第1期38卷 97-100,119页

作者：袁校柠李勖晟童立元钱淼沈中刚南京地铁小镇开发建设集团有限公司江苏南京211135 东南大学交通学院江苏南京211189

为研究典型工业固废电石渣和高炉矿渣共同碳化固化技术对软弱工程渣土性能的改良,设计了两组三因素三水平正交试验。结果表明:碳化后试样的密度、电阻率和无侧限抗压强度均有明显提升,孔隙液电导率和pH明显下降。通过极差、方差分析,确... 详细信息

为研究典型工业固废电石渣和高炉矿渣共同碳化固化技术对软弱工程渣土性能的改良,设计了两组三因素三水平正交试验。结果表明:碳化后试样的密度、电阻率和无侧限抗压强度均有明显提升,孔隙液电导率和pH明显下降。通过极差、方差分析,确定了碳化前后各因素对不同性质的影响程度,通过回归分析提出了预测方程。

关键词：正交试验工业固废碳化固化性能变化工程渣土

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Symmetry Energy Effects in a Statistical Multifragmentation Model

引用

Chinese Physics Letters 2011年第11期28卷 83-86页

作者： ZHANG Lei GAO yua.ZHANG Hong-Fei CHEN Xi-Meng Yu Mei-ling li Jun-Qing School of Information Engineering Hangzhou Dianzi UniversityHangzhou 310018 School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000 Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000

The symmetry energy effects on the nuclear disintegration mechanisms of the neutron-rich system(𝐴0=200,𝑍0=78)are studied in the framework of the statistical multifragmentation model(SMM)within its micro-canonical ensemble.A modified symmetry energy term with consideration of the volume and surface asymmetry is adopted instead of the original invariable value in the standard SMM *** results indicate that as the volume and surface asymmetries are considered,the neutron-rich system translates to a fission-like process from evaporation earlier than the original standard SMM model at lower excitation energies,and its mass distribution has larger probabilities in the medium-heavy nuclei range so that the system breaks up more *** the excitation energy becomes higher,the volume and surface asymmetry lead to a smaller average multiplicity.

关键词： excitation symmetry system

来源：

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

Manipulating selenium molecular configuration in N/O dual-doped porous carbon for high performance potassium-ion storage

引用

Journal of Energy Chemistry 2021年第11期30卷 581-589,I0014页

作者： Dongjun li lifeng Wang Xiaolong Cheng Yu Yao Yu Jiang Pengcheng Shi Ying Wu Xiaojun Wu Cheng Ma Yan yua Hefei National Laboratory for Physical Sciences at the Microscale Department of Materials Science and EngineeringCAS Key Laboratory of Materials for Energy ConversionUniversity of Science and Technology of ChinaHefei 230026AnhuiChina Dalian National Laboratory for Clean Energy(DNL) Chinese Academy of Sciences(CAS)Dalian 116023LiaoningChina School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006GuangdongChina National Synchrotron Radiation Laboratory Hefei 230026AnhuiChina

Potassium-selenium(K-Se)batteries have attracted more and more attention because of their high theoretical specific capacity and natural abundance of K ***,dissolution of polyselenides,large volume expansion during cycling and low utilization of Se remain great challenges,leading to poor rate capability and cycle ***,N/O dual-doped carbon nanofibers with interconnected micro/mesopores(MMCFs)are designed as hosts to manipulate Se molecular configuration for advanced flexible K-Se *** micropores play a role in confining small Se molecule(Se_(2–3)),which could inhibit the formation of polyselenides and work as physical barrier to stabilize the cycle *** the mesopores can confine long-chain Se(Se_(4–7)),promising sufficient Se loading and contributing to higher discharge voltage of the whole Se@MMCFs *** N/O co-doping and the 3D interpenetrating nanostructure improve electrical conductivity and keep the structure integrity after *** obtained Se_(2–3)/Se_(4–7)@MMCFs electrode exhibits an unprecedented cycle life(395 mA h g^(−1) at 1 A g^(−1) after 2000 cycles)and high specific energy density(400 Wh kg^(−1),nearly twice the specific energy density of the Se_(2–3)@MMCFs).This study offers a rational design for the realization of a high energy density and long cycle life chalcogen cathode for energy storage.

关键词： Carbon nanofibers with interconnected micro/mesopores Manipulating Se molecules Heteroatom-doping Flexible K-Se batteries

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Rapid authentication of sesame oil using ion mobility spectrometry and chemometrics

引用

Oil Crop Science 2020年第4期5卷 161-165页

作者： Jun Jiang Xinjing Dou liangxiao Zhang Jin Mao li yua.Fei Maa Peiwu li Oil Crops Research Institute Chinese Academy of Agricultural SciencesWuhanChina Key Laboratory of Biology and Genetic Improvement of Oil Crops Ministry of Agriculture and Rural AffairsWuhanChina Key Laboratory of Detection for Mycotoxins Ministry of Agriculture and Rural AffairsWuhanChina Laboratory of Risk Assessment for Oilseed Products(Wuhan) Ministry of Agriculture and Rural AffairsWuhanChina Quality Inspection and Test Center for Oilseed Products Ministry of Agriculture and Rural AffairsWuhanChina OCRI-Syscan Joint Laboratory of Applications of Ion Mobility Spectrometry on Oilseed and Edible Oils WuhanChina

To ensure authenticity of sesame oil,an authentication technology was proposed using ion mobility spectrometry(IMS)and ***-class classification(OCC)methods including one-class partial least squares(OCPLS)and one-class support vector machine(OCSVM)were employed to build authentication models for sesame ***,an independent test set was used to validate the constructed *** set of 45 adulterated oils indicated that prediction correction rate of OCPLS model reached 95.6%(43 out of 45).Moreover,the complete set of sesame oils adulterated by sesame oil essence could be identified as *** with previous studies,OCPLS model could work to identify untargeted *** conclusion,OCC method could effectively detect adulterated sesame oils containing as little as 10%other vegetable *** study provided a rapid screening method for adulterated sesame oil in market surveillance and a reference for developing authentication methods of other edible oils.

关键词： Rapid authentication Sesame oil Ion mobility spectrometry One-class classification

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Asymmetric association of rainfall and atmospheric circulation over East Asia with anomalous rainfall in the tropical western North Pacific in summer

引用

Atmospheric and Oceanic Science Letters 2016年第3期9卷 185-190页

作者： LU Ri-Yu HONG Xiao-Wei li Xin-Yu State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of Sciences College of Earth Science University of the Chinese Academy of Sciences

It is well known that precipitation anomalies in the tropical western North Pacific （WNP） significantly affect circulation and rainfall in East Asia during summer. In this study, the authors further investigated this relationship, by examining the anomalies associated with positive and negative precipitation anomalies in the tropical WNP. The results suggest these anomalies are asymmetric between the enhanced and suppressed WNP rainfall. Positive precipitation anomalies over the WNP, in comparison with their negative counterparts, are more closely related to the meridional teleconnection pattern and rainfall anomalies along the East Asian rain belt. The implications of the results are discussed.

关键词： Teleconnection East Asianrain fall western NorthPacific East Asian jet asymmetry

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The clinicopathological and prognostic significance of PD-L1 expression in pancreatic cancer:A meta-analysis

引用

Hepatobiliary & Pancreatic Diseases International 2018年第2期17卷 95-100页

作者： He-li Gaoa liang liua Zi-Hao Qi Hua-Xiang Xu Wen-Quan Wang Chun-Tao Wu Shi-Rong Zhang Jin-Zhi Xu Quan-Xing Ni Xian-Jun yua Department of Pancreatic Surgery Fudan University Shanghai Cancer CenterShanghai 200032China Department of Oncology Shanghai Medical CollegeFudan UniversityShanghai 200032China Shanghai Pancreatic Cancer Institute Shanghai 200032China Pancreatic Cancer Institute Fudan UniversityShanghai 200032China

Background: Immunotherapy has shown promise against solid tumors. However, the clinical significance of programmed cell death 1(PD-1) and programmed cell death ligand 1(PD-L1) in pancreatic ductal adenocarcinoma(PDAC) remains unclear. This meta-analysis aimed to analyze the prognostic effect of PD-L1 in *** sources: Electronic search of the Pub Med, Cochrane library and Web of Science was performed until December 2016. Through database searches, we identified articles describing the relationship between PD-L1 status and PDAC patient prognosis. Meta-analysis was performed to investigate the relationship between PD-1 and overall survival(OS).Results: Nine studies with 989 PDAC patients were included for PD-L1 expression analysis. And 5 studies with 688 PDAC patients were included in the prognostic analysis. The PD-L1 positive rate measured by immunohistochemistry(IHC) was higher than that measured by polymerase chain reaction(PCR)(P < 0.001). PDAC patients with high expression levels of PD-L1 had significantly reduced OS(HR = 2.34;95% CI: 1.78–3.08). Subgroup analysis showed that the prognostic effect of PD-L1 levels was similar between the IHC and PCR methods. The PD-L1 positive rate was associated with PDAC T stages; the PD-L1 positive rate in the T3–4 group was higher than that in the T1-2 group(OR = 0.37; P = 0.001).Conclusions: High PD-L1 expression levels predicted a poor prognosis in PDAC patients. Thus, PD-L1 status helps determine treatment in PDAC patients.

关键词： Pancreatic ductal adenocarcinoma Programmed cell death ligand 1 Prognosis Meta-analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：