检索结果-南通市图书馆

High basal defense gene expression determines sorghum resistance to the whorl-feeding insect southwestern corn borer

引用

Insect Science 2013年第3期20卷 307-317页

作者： wei-ning Cheng Jia-Xin Lei William L. Rooney Tong-Xian Liu Keyan Zhu-Salzman Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau Ministry of Agriculture Northwest A&F Uni- versity Yangling Shaanxi China Department of Entomology Department of Soil and Crop Sciences Vegetable & Fruit Improvement Center Texas A&M University College Station Texas United States

Southwestern corn borer （SWCB, Diatraea grandiosella） and fall armyworm （FAW, Spodopterafrugiperda） are major pests of sorghum in the southern United States. Host plant resistance is a desirable means for reducing plant damage and yield losses from both insects. In this study, we evaluated 12 sorghum lines for whorl-stage resistance to leaf-feeding SWCB and FAW in greenhouse and laboratory bioassays. Differential plant responses were detected against the two insects. Among 12 lines tested, CM1821, Della and PI196583 were resistant to both insects, while BTx2752 was largely susceptible. Line R.09110 was resistant to SWCB, but susceptible to FAW, whereas Redbine-60 was suscep- tible to SWCB, but not to FAW. In addition, we quantified various chemical components in the plants and determined their association with insect resistance. Tannin and chloro- phyll in leaves did not show any significant correlation with resistance to either insects, but contents of soluble protein in general were negatively correlated with resistance to both insects. Endogenous soluble sugar and dhurrin were only positively correlated with resistance to SWCB, but not with FAW resistance. To gain some molecular insight into resistance mechanism of sorghum to SWCB, we performed qPCR reactions for key genes encoding enzymes involved in dhurrin and jasmonic acid （JA） biosynthesis on selected resistant or susceptible lines. Although these genes were rapidly and strongly induced by insect feeding in all lines, the observed resistance is likely explained by higher constitutive dhurrin contents in some resistant lines and higher basal JA biosynthesis in others. Our results suggest that sorghum utilizes multiple strategies to defend itself against SWCB.

关键词： Diatraea grandiosella host plant resistance resistance mechanism sorghum,Spodoptera frugiperda

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

Research on active defense decision-making method for cloud boundary networks based on reinforcement learning of intelligent agent

High-Confidence Computing

引用

High-Confidence Computing 2024年第2期4卷 50-61页

作者： Huan Wang Yunlong Tang Yan Wang ning wei Junyi Deng Zhiyan Bin weilong Li School of Computer Science and Technology Guangxi University of Science and TechnologyLiuzhou 545000China Liuzhou Key Laboratory of Big Data Intelligent Processing and Security Liuzhou 545000China Guangxi Education System Network Security Monitoring Center Liuzhou 545000China Center of Graphics and Information Guangxi ECO-Engineering Vocational&Technical CollegeLiuzhou 545004China

The cloud boundary network environment is characterized by a passive defense strategy,discrete defense actions,and delayed defense feedback in the face of network attacks,ignoring the influence of the external environment on defense decisions,thus resulting in poor defense ***,this paper proposes a cloud boundary network active defense model and decision method based on the reinforcement learning of intelligent agent,designs the network structure of the intelligent agent attack and defense game,and depicts the attack and defense game process of cloud boundary network;constructs the observation space and action space of reinforcement learning of intelligent agent in the non-complete information environment,and portrays the interaction process between intelligent agent and environment;establishes the reward mechanism based on the attack and defense gain,and encourage intelligent agents to learn more effective defense *** designed active defense decision intelligent agent based on deep reinforcement learning can solve the problems of border dynamics,interaction lag,and control dispersion in the defense decision process of cloud boundary networks,and improve the autonomy and continuity of defense decisions.

关键词： Active defense decision-making Cloud boundary network security Intelligent agent reinforcement learning Offensive and defensive game

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

Variable angle spectroscopic ellipsometry and its applications in determining optical constants of chalcogenide glasses in infrared

引用

Chinese Physics B 2018年第6期27卷 454-460页

作者： ning-ning wei Zhen Yang Hong-Bo Pan Fan Zhang Yong-Xing Liu Rong-Ping Wang Xiang Shen Shi-Xun Dai Qiu-Hua Nie Laboratory of Infrared Material and Devices Advanced Technology Research InstituteNingbo UniversityNingbo 315211China Key Laboratory of Photoelectric Materials and Devices of Zhejiang Province Ningbo 315211China

The principle of variable angle spectroscopic ellipsometry（VASE） and the data analysis models, as well as the applications of VASE in the characterization of chalcogenide bulk glasses and thin films are reviewed. By going through the literature and summarizing the application scopes of various analysis models, it is found that a combination of various models, rather than any single data analysis model, is ideal to characterize the optical constants of the chalcogenide bulk glasses and thin films over a wider wavelength range. While the reliable optical data in the mid-and far-infrared region are limited, the VASE is flexible and reliable to solve the issues, making it promising to characterize the optical properties of chalcogenide glasses.

关键词： chalcogenide glasses/thin films VASE optical constants infrared

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

船舶工程危险化学品智能管理系统设计

引用

中国造船 2019年第A1期60卷 408-412页

作者：卫宁中国船舶工业系统工程研究院北京100094

船舶危险化学品安全是船舶安全的重要方面,既取决于船舶上危险化学品的安全,又取决于船舶本身的安全。随着科技的快速发展,船舶行业的设计也在朝着智能化的方向发展。针对船舶工程安全管理数据不全面、显示不直观、管理效率低的现状,提... 详细信息

船舶危险化学品安全是船舶安全的重要方面,既取决于船舶上危险化学品的安全,又取决于船舶本身的安全。随着科技的快速发展,船舶行业的设计也在朝着智能化的方向发展。针对船舶工程安全管理数据不全面、显示不直观、管理效率低的现状,提出将智能监控技术应用在船舶工程安全管理中,设计船舶工程危险化学品智能管理系统。通过分析该系统的功能,指出其关键技术是三维全景危险化学品存放环境创建技术、船舶内危险化学品包装动态监控技术、船舶内危险化学品监控模型创建技术、危险化学品数据智能采集分析技术。船舶工程危险化学品智能管理系统是一个综合了定性和定量监控的系统性、结构化和综合性的管理系统,其在船舶工程安全管理中的应用必将大幅提高船舶行业的智能化水平。

关键词：船舶危险化学品智能管理

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

泸州河东长江大桥总体设计

引用

桥梁建设 2022年第4期52卷 110-116页

作者：宁伯伟中铁大桥勘测设计院集团有限公司湖北武汉430056

为满足地方交通路网衔接和功能需求,泸州河东长江大桥主桥采用主跨520 m的双塔双索面混合梁斜拉桥,全长936 m,桥面总宽28.5 m(不含锚索区),近期按双向4车道布置,远期可改造为双向6车道。主桥中跨采用钢-混结合梁,由工字形钢板边主梁+混... 详细信息

为满足地方交通路网衔接和功能需求,泸州河东长江大桥主桥采用主跨520 m的双塔双索面混合梁斜拉桥,全长936 m,桥面总宽28.5 m(不含锚索区),近期按双向4车道布置,远期可改造为双向6车道。主桥中跨采用钢-混结合梁,由工字形钢板边主梁+混凝土桥面板组成,边跨采用π形混凝土边主梁;斜拉索采用平行钢丝斜拉索,斜拉索及其锚具分别采用PVF胶带和氧化聚合型防腐蚀技术进行长效防护,显著增强主桥的耐久性;桥塔采用钢筋混凝土门形塔,塔墩基础采用钻孔灌注桩。主桥边跨混凝土梁采用支架现浇,中跨结合梁采用单悬臂拼装架设。引桥长270 m,为与主桥桥面宽度布置保持一致,采用9孔30 m整幅混凝土连续箱梁。对主桥、引桥结构及混凝土桥面板进行计算分析,结果表明:主桥、引桥的静力和动力性能及桥面板纵、横向受力均满足规范要求。

关键词：斜拉桥结合梁工字形钢边主梁门形塔桥面布置耐久性受力分析桥梁设计

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

Total Fractionation and Analysis of Polysaccharides from Leaves of Panax ginseng C.A. Meyer

引用

Chemical Research in Chinese Universities 2010年第2期26卷 230-234页

作者： NI Xiu-zhen WANG Bing-qing ZHI Yuan wei ning-ning ZHANG Xu LI Shan-shan TAI Gui-hua ZHOU Yi-fa ZHAO Ji-ming School of Life Sciences Northeast Normal University Changchun 130024 P. R. China School of Life Sciences Changchun Normal University Changchun 130032 P. R. China

The water-soluble polysaccharides isolated from the leaves of Panax ginseng C. A. Meyer were totally fractionated into one neutral fraction（GLPN-1）, six acidic fractions（GLPN-2, GLPA-1a, GLPA-1b, GLPA-1c, GLPA-2 and GLPA-3） by a combination of ethanol precipitation, ion-exchange and gel permeation chromatography. All the fractions were analyzed by determining monosaccharide composition, molecular weight distribution. The resuits show that GLPN-1 was mainly composed of Gal（38.1%） and Ara（33.6%） and presumed to be an arabinogalactan. GLPA-1a, GLPA-1b and GLPA-2 mainly contained Gal, Ara, Rha and GalA. The amount of Gal and Ara acounted for over 50% of total sugar and the amount of Rha was more than 10%. The molar ratios of Rha/GalA in GLPA-1a, GLPA-1b and GLPA-2 were 1：1, 1：2 and 1：2.7, respectively, indicating that they belong to type-1 rhamnogalacturonan （RG-1）-rich pectin. GLPA-1c was mainly composed of GalA（78%）, belonging to homogalacturonan（HG）-rich pectin. GLPA-3 might be a glycoprotein.

关键词： Ginseng leave Polysaccharide Fractionation RG-I domain

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

TSA1 interacts with CSN1/CSN and may be functionally involved in Arabidopsis seedling development in darkness

引用

Journal of Genetics and Genomics 2011年第11期38卷 539-546页

作者： Wenjun Li Baisheng Zang Citao Liu Lu Lu ning wei Kaiming Cao Xing Wang Deng Xiping Wang State Key Laboratory of Genetic Engineering Department of Biochemistry Fudan University Shanghai 200433 China Peking-Yale Joint Center of Plant Molecular Genetics and Agrobiotechnology Department of Biochemistry College of Life Sciences Peking University Beijing 100871 China Beijing Key Laboratory of Gene Engineering Drug and Biotechnology Department of Biochemistry College of Life Sciences Beijing Normal University Beijing 100875 China Department of Molecular Cellular and Developmental Biology Yale University New Haven Connecticut 06520 USA

The COP9 signalosome （CSN） is a multiprotein complex which participates in diverse cellular and developmental processes. CSN1, one of the subunits of CSN, is essential for assembly of the multiprotein complex via PCI （proteasome, COP9 signalosome and initiation factor 3） domain in the C-terminal half of CSN 1. However, the role of the N-terminal domain （NTD） of CSN 1, which is critical for the function of CSN, is not completely understood. Using a yeast two-hybrid （Y2H） screen, we found that the NTD of CSN1 interacts with TSK-associating protein 1 （TSA1）, a reported CaZ＋-binding protein. The interaction between CSN1 and TSA1 was confirmed by co-immunoprecipitation in Arabidopsis. tsal mutants exhibited a short hypocotyl phenotype in darkness but were similar to wild-type Arabidopsis under white light, which suggested that TSA1 might regulate Arabidopsis hypocotyl development in the dark. Furthermore, the expression of TSA1 was significantly lower in a csnl null mutant （fus6）, while CSN1 expression did not change in a tsal mutant with weak TSAI expression. Together, these findings suggest a functional relationship between TSAI and CSN1 in seedling development.

关键词： CSN 1 TSA 1 Protein interaction Hypocotyl

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

Ensiling vine tea (Ampelopsis grossedentata) residue with Lactobacillus plantarum inoculant as an animal unconventional fodder

引用

Journal of Integrative Agriculture 2023年第4期22卷 1172-1183页

作者： WANG Yuan ZHOU Hong-zhang GAO Yu WANG ning-wei LIU Han YANG Fu-yu NI Kui-kui College of Grassland Science and Technology China Agricultural UniversityBeijing 100193P.R.China

The study aimed to evaluate the application of silage fermentation in storing vine tea *** of fermentationrelated product,chemical component and bacterial community of silage with or without Lactobacillus plantarum F1inoculant were *** results showed that F1 treatment had a significant (P<0.05) impact on the lactic acid and ammoniacal nitrogen concentrations and pH *** phenols were well preserved in both *** 30 days of ensiling,*** occupied the majority of Lactobacillus genus (more than 95%) in all silage *** revealed a positive (P<0.01) correlation between lactic acid content and ***,ensiling vine tea residue with *** can effectively preserve the nutritional attributes and total phenols,which offers a new insight into utilizing vine tea residue.

关键词： vine tea ensiling flavonoid total phenols bacterial community

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 basic helix-loop-helix transcription factor TabHLH1 increases chlorogenic acid and luteolin biosynthesis in Taraxacum antungense Kitag

引用

Horticulture Research 2021年第1期8卷 2756-2769页

作者： Qun Liu Li Li Haitao Cheng Lixiang Yao Jie Wu Hui Huang wei ning Guoyin Kai Laboratory for Core Technology of TCM Quality Improvement and Transformation College of PharmacySchool of Pharmaceutical SciencesThe Third Affiliated HospitalZhejiang Chinese Medical UniversityHangzhouZhejiang 310053PR China College of Horticulture Shenyang Agricultural UniversityShenyang 110866China Institute of Botany Jiangsu Province and Chinese Academy of Sciences(Nanjing Botanical Garden Mem.Sun Yat-Sen)Nanjing 210014China College of Traditional Chinese Materia Medica Shenyang Pharmaceutical UniversityShenyang 110016PR China Guangxi Botanical Garden of Medicinal Plants Nanning 530023PR China College of Life Sciences and Engineering Shenyang UniversityShenyang 110044PR China

Polyphenols are the main active components of the anti-inflammatory compounds in dandelion,and chlorogenic acid(CGA)is one of the primary ***,the molecular mechanism underlying the transcriptional regulation of CGA biosynthesis remains ***-CoA:quinate hydroxycinnamoyl transferase(HQT2)is the last rate-limiting enzyme in chlorogenic acid biosynthesis in Taraxacum ***,using the TaHQT2 gene promoter as a probe,a yeast one-hybrid library was performed,and a basic helix-loop-helix(bHLH)transcription factor,TabHLH1,was identified that shared substantial homology with Gynura bicolor DC *** TabHLH1 transcript was highly induced by salt stress,and the TabHLH1 protein was localized in the *** and luteolin concentrations in TabHLH1-overexpression transgenic lines were significantly higher than those in the wild type,while CGA and luteolin concentrations in TabHLH1-RNA interference(RNAi)transgenic lines were significantly *** real-time polymerase chain reaction demonstrated that overexpression and RNAi of TabHLH1 in *** significantly affected CGA and luteolin concentrations by upregulating or downregulating CGA and luteolin biosynthesis pathway genes,especially TaHQT2,4-coumarate-CoA ligase(Ta4CL),chalcone isomerase(TaCHI),and flavonoid-3′-hydroxylase(TaF3′H).Dual-luciferase,yeast one-hybrid,and electrophoretic mobility shift assays indicated that TabHLH1 directly bound to the bHLH-binding motifs of proTaHQT2 and *** study suggests that TabHLH1 participates in the regulatory network of CGA and luteolin biosynthesis in *** and might be useful for metabolic engineering to promote plant polyphenol biosynthesis.

关键词： HLH luteolin helix

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

Review of Budd-Chiari Syndrome

引用

Journal of Interventional Medicine 2020年第2期3卷 65-76页

作者： Maoheng Zu Hao Xu Qingqiao Zhang Yuming Gu ning wei wei Xu Yanfeng Cui Hongtao Liu Department of Interventional Radiology The Affiliated Hospital of XuZhou Medical UniversityProvince JiangsuPR China

This study aims to report the Budd-Chiari syndrome clinical research status and progress that has occurred in over nearly 30 years in China, and emphasize the value of imaging in facilitating the diagnosis of Budd-Chiari syndrome based on more than 2500 cases. Findings on ultrasonography, computed tomography, magnetic resonance imaging, and digital subtraction angiography images are used to propose new Budd-Chiari syndrome types and subtypes. The new subtype classification presented here has important value for guiding interventional *** study also proposes a new concept of anatomical and functional obstruction of hepatic vein that stresses the compensatory value of accessory hepatic vein and azygos vein and describes the risk of manipulation of the communication branch of inferior vena cava obstruction in interventional therapy.

关键词： Budd-chiari syndrome Etiology Imaging diagnosis Type and subtype

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：