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

基于扩散算子的带限图信号加权重建策略

电子与信息学报 2017年第12期39卷 2937-2944页

作者：杨立山游康勇郭文彬北京邮电大学信息与通信工程学院北京100876

图信号处理技术将经典信号处理的概念和算法延展到图结构信号的处理领域。对于带限图信号,可以通过分析信号之间的关联性,重建出未采样的信号。该文分析了未采样信号的构成架构,提出一个基于扩散算子的未采样信号迭代重建算法。在每次... 详细信息

图信号处理技术将经典信号处理的概念和算法延展到图结构信号的处理领域。对于带限图信号,可以通过分析信号之间的关联性,重建出未采样的信号。该文分析了未采样信号的构成架构,提出一个基于扩散算子的未采样信号迭代重建算法。在每次迭代过程中,将已采样信号的重建残差扩散至所有未采样的信号节点,并进一步通过初步估计结果与重建残差的加权处理,提升算法的收敛速度。采用合成数据和真实数据进行仿真验证,实验结果显示所提出的算法具有低重建误差和快速收敛的特点。

关键词：带限图信号处理图信号扩散算子下采样与重建

在线全文

学校读者我要写书评

暂无评论

基于稀疏贝叶斯学习的网格自适应多源定位

电子与信息学报 2018年第9期40卷 2150-2157页

作者：游康勇杨立山刘玥良郭文彬王文博北京邮电大学信息与通信工程学院北京100876 通信网信息传输与分发技术重点实验室石家庄050000

多源定位是信号处理中的重要问题。该文针对目标偏离初始网格点引起的基不匹配问题,构建具有Laplace先验的稀疏贝叶斯学习框架,提出基于稀疏贝叶斯学习的网格自适应多源定位算法AGMTL。本质上,AGMTL实现了稀疏信号重建和网格自适应定位... 详细信息

多源定位是信号处理中的重要问题。该文针对目标偏离初始网格点引起的基不匹配问题,构建具有Laplace先验的稀疏贝叶斯学习框架,提出基于稀疏贝叶斯学习的网格自适应多源定位算法AGMTL。本质上,AGMTL实现了稀疏信号重建和网格自适应定位字典的学习。仿真结果表明,AGMTL通过网格自适应调整,在定位误差,估计可靠性,抗噪性能上均远远优于传统的压缩感知定位算法。

关键词：多源定位压缩感知网格自适应模型稀疏贝叶斯学习 Laplace先验

Heat Transfer Model Founded and Regional Suitability Analysis of Photovoltaic Walls with Different Structures

在线全文

学校读者我要写书评

暂无评论

Journal of Thermal Science 2022年第6期31卷 1970-1989页

作者： ZHANG Wenjie ZHAO Yingbo LIU Wei GONG Tongdan LIU kangyong School of Energy and Power Engineering Nanjing University of Science and TechnologyNanjing 210094China China Construction Sixth Division Construction&Development Co.Ltd. Tianjin 300451China

The heat transfer performance and suitability of photovoltaic walls with different structures in different regions have been studied. First, a quasi-two-dimensional calculation model was established to realize the simulation of photovoltaic walls with three structural forms(ordinary wall with air layer opening, air layer closed and no air layer);combined with the experimental data, the accuracy of the two-dimensional calculation model was verified. Based on the simulation results, the suitability of different structural forms of photovoltaic walls in areas with different climatic conditions were compared and analyzed. The results of the study show that the southern China that emphasize the purpose of ventilation and heat dissipation should adopt photovoltaic walls with open air layers, and the northern regions that emphasize the purpose of heat preservation and heat insulation should adopt photovoltaic walls with closed air layers;for transitional areas, the type of photovoltaic wall should be considered comprehensively according to environmental conditions and local building conditions.

关键词： photovoltaic wall thermal performance numerical simulation regional suitability

Autophagy: a double-edged sword for neuronal survival after cerebral ischemia

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2014年第12期9卷 1210-1216页

作者： Wenqi Chen Yinyi Sun kangyong Liu Xiaojiang Sun Department of Neurology the Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University Zhoupu Hospital

Evidence suggests that autophagy may be a new therapeutic target for stroke, but whether acti- vation of autophagy increases or decreases the rate of neuronal death is still under debate. This review summarizes the potential role and possible signaling pathway of autophagy in neuronal survival after cerebral ischemia and proposes that autophagy has dual effects.

关键词： nerve regeneration autophagy lysosome autophagosome neuron cerebral ischemia signaling pathway apoptosis necrosis survival NSFC grant neural regeneration

Review on advances of airjection irrigation

在线全文

学校读者我要写书评

暂无评论

International Journal of Agricultural and Biological Engineering 2016年第2期9卷 1-10页

作者： Li Yuan Niu Wenquan Wang Jingwei Xu Jian Zhang Mingzhi Li kangyong Institute of Soil and Water Conservation Northwest A&F UniversityYangling 712100ShaanxiChina Institute of Soil and Water Conservation Chinese Academy of Sciences&Ministry of Water ResourcesYangling 712100ShaanxiChina College of Water Resources and Architectural Engineering Northwest A&F UniversityYangling 712100ShaanxiChina Institute of Water-saving Agriculture in Arid Areas of China(IWSA) Northwest A&F UniversityYangling 712100ShaanxiChina

Air is squeezed out of the soil in the process of traditional *** stress of the root zone is harmful to the yield and quality of *** was found that the improvement of the soil oxygen condition can increase the crop yield and quality in the root *** recent years,a number of studies showed that hypoxia stress has bad influence on root zone,and the ventilation technologies have some positive effects on crop yield and *** paper introduces and analyzes the mechanism of hypoxia stress in root zone,and provides an overview about characteristics and application on airjection ***,the advantages and disadvantages of different airjection irrigation technologies were investigated,the achievements that have been made in this filed were summarized,and some existed problems were *** on the previous studies,the research trends of the airjection irrigation technology were proposed,which can provide a reference for the further research in the research field.

关键词： irrigation airjection root zone hypoxia stress crop yield

Deformation Characteristics of Semi-Solid High Carbon Tool Steel

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2004年第5期11卷 i006-i007页

作者： LIJi-guang kangyong-lin ZHAOAi-min YUHao UniversityofScienceandTechnologyBeijing Beijing100083China

Mutant alpha-synuclein and autophagy in PC12 cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2011年第2期6卷 91-95页

作者： kangyong Liu Chunfeng Liu Chuancheng Ren Yaping Yang Liwei Shen Xuezhong Li Fen Wang Zhenghong Qin Department of Neurology Fifth Hospital of Fudan University Shanghai 200240 China Department of Neurologyl Second Affiliated Hospital of Soochow University Suzhou 216005 Jiangsu Province China Laboratory of Aging and'Nervous Diseases Soochow University Suzhou 216005 Jiangsu Province China

Several studies have demonstrated that overexpression of mutant a-synuclein in PC12 cells is related to occurrence of autophagy. The present study established mutant α-synuclein （A30P） -transfected PC12 cells and treated them with the autophagy inducer rapamycin and autophagy inhibitor wortmannin, respectively. Results demonstrated that mutant a-synuclein resulted in cell death via autophagy and involved a-synuclein accumulation, membrane lipid oxidation, and loss of plasma membrane integrity. Mutant a-synuclein （A30P） also mediated toxicity of 1-methyl-4-phenylpyridinium ion. Moreover, rapamycin inhibited a-synuclein aggregation, while wortmannin promoted α-synuclein aggregation and cell death. To further determine the role of autophagy due to mutant α-synuclein, the present study measured expression of microtubule-associated protein light chain 3. Results revealed that wortmannin and 1-methyl-4-phenylpyridinium ion inhibited expression of microtubule-associated protein light chain 3 while rapamycin promoted its expression. These findings suggested that abnormal aggregation of a-synuclein induced autophagic programmed cell death in PC12 cells.

关键词： α-synuclein autophagy microtubule-associated protein light chain 3 Parkinson's disease: PC12 cells

Production and characterization of monoclonal antibodies against grass carp CD4-1 and CD4-2

在线全文

学校读者我要写书评

暂无评论

Aquaculture and Fisheries 2024年第2期9卷 154-163页

作者： Bangjie Wang Yuting Qin Zhaosheng Sun Xiaozhen Zhu Zhao Jia kangyong Chen Danjie Liu Junya Wang Jun Zou Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources Ministry of EducationShanghai Ocean UniversityShanghai201306China International Research Center for Marine Biosciences at Shanghai Ocean University Ministry of Science and TechnologyShanghai201306China National Demonstration Center for Experimental Fisheries Science Education Shanghai Ocean UniversityShanghai201306China Laboratory for Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and TechnologyQingdao266071China

CD4 T helper cells are an important group of cells in the immune system of vertebrates and express CD4 receptor on the cell *** mammals,the CD4 receptor is encoded by a single copy gene,whilst in fish,two copies of cd4 genes,namely cd4-1 and cd4-2,are *** this study,the ectodomains of grass carp(Ctenopharyngodon idella,Ci)CD4-1 and CD4-2 were expressed in the *** cells and used to generate monoclonal antibodies in *** blotting,confocal microscopy and flow cytometry were performed to characterize the monoclonal *** has been shown that the CiCD4-1 and CiCD4-2 monoclonal antibodies had good specificity to react with the recombinant ectodomains of CiCD4-1 and CiCD4-2 expressed in the CHO-S cells and the native CD4 molecules of grass *** CiCD4-1 monoclonal antibody did not recognize CiCD4-2 and verse *** addition,the CD4-1 and CD4-2 monoclonal antibodies specifically recognized the CD4-1 and CD4-2 receptors expressed in the HEK293 cells and native molecules of fish ***,the percentages of lymphocytes in immune tissues of healthy fish were analyzed by flow *** was found that 17.6%of lymphocytes were CD4-1^(+)cells and 22.5%were CD4-2^(+)in the head *** the spleen,13.1%of lymphocytes were CD4-1^(+)and 18.6%were CD4-2^(+)while 7.3%of blood lymphocytes were CD4-1^(+)cells and 8.8%were CD4-2^(+)*** availability of the CD4-1 and CD4-2 monoclonal antibodies provides antibody-based tools for further elucidation of the functions of CD4 T cells in grass carp.

关键词： Grass carp CD4 Monoclonal antibodies Flow cytometry Confocal microscopy

RNA-seq analysis of a zebrafish caudal fin cell line in response to infection with spring viraemia of carp virus

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Aquaculture and Fisheries 2024年第2期9卷 181-192页

作者： Wenji Huang Ning Ji Xin Zhao Jiahong Guo Jianhua Feng kangyong Chen Yaxin Wu Junya Wang Jun Zou Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources Ministry of EducationShanghai Ocean UniversityShanghai201306China International Research Center for Marine Biosciences Ministry of Science and TechnologyShanghai Ocean UniversityShanghai201306China National Demonstration Center for Experimental Fisheries Science Education Shanghai Ocean UniversityShanghai201306China Laboratory for Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and TechnologyQingdao266071China

A cell line,termed ZFIN,was established from the caudal fin of zebrafish and was shown to be susceptible to spring viremia of carp virus(SVCV).The ZFIN cells are epithelial like cells and have a moderate plasmid transfection efficiency of 13.9%.Using an RNA-seq approach,differentially expressed genes(DEGs)regulated by SVCV were *** of SVCV gave rise to 3931 DEGs and up-regulated DEGs were mostly enriched into the biological regulation and cellular processes,among which pathways for the type I interferon signaling and the response to exogenous dsRNA were the top two GO *** KEGG signaling pathways including TLR signaling pathway,RLR receptor signaling pathway,cytosolic DNA-sensing pathway,NLR signaling pathway,cytokine-cytokine receptor interaction and ferroptosis were significantly *** genes including ifnφ1,isg15 and mx were significantly *** addition,key DEGs involved in autophagy were *** results indicate that the ZFIN cell line provides a useful in vitro tool for study on the gene functions and cellular responses to viral infection in fish.

关键词： Caudal fin cells SVCV RNA-seq DEGs Innate antiviral response