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适合无土栽培设施种植的水果黄瓜品种筛选

中国瓜菜 2024年第6期37卷 88-94页

作者：刘志新郑北平杨硕郑丽施仕胜夏文娟邱首哲黄远徐绳武咸宁市农业科学院湖北咸宁437100 华中农业大学园艺林学学院武汉430070

为筛选出适宜设施无土栽培的优良水果黄瓜品种,以7个水果黄瓜品种为试验材料,测定了14个农艺性状指标和5个营养品质指标,并结合主成分分析和隶属函数分析,对不同品种进行综合评价。结果表明,不同水果黄瓜品种间植株性状、果实品质、产... 详细信息

为筛选出适宜设施无土栽培的优良水果黄瓜品种,以7个水果黄瓜品种为试验材料,测定了14个农艺性状指标和5个营养品质指标,并结合主成分分析和隶属函数分析,对不同品种进行综合评价。结果表明,不同水果黄瓜品种间植株性状、果实品质、产量等存在显著差异;在7个参试品种中,浙秀6号蔓长、蔓粗、节间距等均最大,植株营养生长最旺;浙秀4号可溶性糖含量最高,托尼206可溶性固形物含量最高;浙秀3号和浙秀4号果实产量最高。对产量性状和品质性状进行主成分分析,提取出3个主成分,累积贡献率达86.552%;运用隶属函数综合评价,排名前三且得分由高到低的品种依次为浙秀4号、托尼206、浙秀3号。试验结果为筛选适宜设施无土栽培水果黄瓜品种提供了一定的参考。

关键词：水果黄瓜农艺性状主成分分析隶属函数

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Decentralized Mobile SNS Architecture and Its Personal Information Management Mechanism

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China Communications 2016年第2期13卷 189-199页

作者： liu Zhihan yuan Quan liu Lu State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications

Mobile SNS is one of the most popular topics of mobile Internet.In order to fulfill the user demand for self-maintained independent social network and ensure the privacy of their personal information and resources,the paper proposes system architecture of decentralized mobile SNS.In the temporary scenarios,the system makes use of the existent specification of FOAF(Friendof-a-Friend) to describe users' personal information and act as a certificate to be identified by SNS sites.Ticket-based Access Authorization System(TAAS) is provided to grant permission to acquire resources on personal portal.Meanwhile,the mechanism and algorithm are devised for user profile complete deletion when users are going to quit the service for the temporary scenarios.

关键词： SNS系统个人信息管理机制移动架构分布式用户需求用户配置文件

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纳米磷酸钒钠的制备及其储钠性能研究

钢铁钒钛 2024年第1期45卷 12-18页

作者：张东彬袁欣然辛亚男毕新强刘天豪韩慧果杜光超滕艾均鞍钢集团北京研究院有限公司北京102211 成都先进金属材料产业技术研究院股份有限公司四川成都610300 四川攀研技术有限公司四川攀枝花617000 攀钢集团研究院有限公司钒钛资源综合利用国家重点实验室四川攀枝花617000

基于磷酸钒钠制备条件苛刻、颗粒粒径大、电导率差等问题,提出了一种制备纳米磷酸钒钠的新方法。通过碱性沉钒形成羟基氧化钒,再利用PO_(4)^(3-)、F^(-)等阴离子与OH^(-)的原位离子交换,从而得到纳米化的磷酸钒钠。借助XRD、SEM、FTIR... 详细信息

基于磷酸钒钠制备条件苛刻、颗粒粒径大、电导率差等问题,提出了一种制备纳米磷酸钒钠的新方法。通过碱性沉钒形成羟基氧化钒,再利用PO_(4)^(3-)、F^(-)等阴离子与OH^(-)的原位离子交换,从而得到纳米化的磷酸钒钠。借助XRD、SEM、FTIR等方法,分析了纳米磷酸钒钠的形成机理,优化了合成条件。电化学测试结果表明,磷酸钒钠的纳米化提升了电子/离子输运能力,使得所制备的纳米磷酸钒钠表现出优异的储钠性能。当电流密度为10 mA/g时,其放电比容量为106.68 mAh/g,并且循环20次循环充放电后,仍能保持80.85 mAh/g的放电比容量。

关键词：纳米材料磷酸钒钠离子交换正极材料储钠性能

基于文献计量学的天麻研究现状和发展态势分析

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中国合理用药探索 2024年第4期21卷 24-39页

作者：郑传毛李杰庆刘鸿高王元忠云南省天麻与真菌共生生物学重点实验室昭通657000 云南农业大学农学与生物技术学院昆明650201 云南省农业科学院药用植物研究所昆明650200

目的:基于文献计量学探讨并分析天麻在国际研究领域的热点及发展趋势。方法:以WebofScience数据库为数据来源,收集2000年1月~2023年4月期间天麻相关研究的文献报道,使用文献计量可视化软件VOSviewer1.6.19、CiteSpace6.2.R4、Bibliometr... 详细信息

目的:基于文献计量学探讨并分析天麻在国际研究领域的热点及发展趋势。方法:以WebofScience数据库为数据来源,收集2000年1月~2023年4月期间天麻相关研究的文献报道,使用文献计量可视化软件VOSviewer1.6.19、CiteSpace6.2.R4、BibliometrixR4.3.2和Excel2019对年度发文量、期刊分布情况、文献所属国家、机构及作者的合作关系、文献共被引频次、高频关键词进行可视化分析。结果:共检索到文献1039篇,剔除重复文献后,共纳入613篇文献。天麻相关研究文献最早发表于2000年,年度发文量呈波动式增长。我国关于天麻的文献量最多,共496篇。核心作者共162位,国家、机构和作者合作网络松散。10篇高被引文章均对天麻的药理作用进行了研究分析,主要集中在天麻素的药理学研究方面。关键词分析提示研究热点从天麻提取液及其主要化学成分药理活性的探索转变为疾病改善的通路机制研究;天麻通过参与氧化应激进而影响神经系统退行性病变的作用机制研究可能成为该领域的新热点。结论:本研究利用文献计量可视化软件直观反映了天麻研究领域的热点和发展趋势,可为天麻相关研究提供参考。

关键词：天麻天麻素文献计量学 Bibliometrix CiteSpace VOSviewer

盛世书写与文体特质重构——朱有燉杂剧思想价值的再审视

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广东技术师范大学学报 2024年第2期45卷 105-112页

作者：刘竞广东技术师范大学文学与传媒学院广东广州510665

朱有燉的杂剧在明代初年具有特殊的价值,他在作品中塑造了一个以儒家政治伦理为导向的正统汉家王朝,突出了帝王德治的成效,展现了王朝的和平繁荣,描绘了充满稳定秩序与社会良俗的盛世社会形态。朱有燉的杂剧在思想上,适应了由元入明社... 详细信息

朱有燉的杂剧在明代初年具有特殊的价值,他在作品中塑造了一个以儒家政治伦理为导向的正统汉家王朝,突出了帝王德治的成效,展现了王朝的和平繁荣,描绘了充满稳定秩序与社会良俗的盛世社会形态。朱有燉的杂剧在思想上,适应了由元入明社会形态转型的需要,有利于以戏曲的形式完成新王朝自我形象建设的任务。对道德、伦理、风教等主流观念的强调与传递,使其杂剧在思想上与元杂剧迥异,并在文体特质上发生变异,开始向传统诗文领域靠近,在一定程度上启发了后来的明代曲家。朱有燉为其杂剧赋予了新的内涵与价值,并成为其作品广泛传播的内因。

关键词：朱有燉杂剧思想价值转型

Ergodicity and asymptotic stability of Feller semigroups on Polish metric spaces

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Science China Mathematics 2015年第6期58卷 1235-1250页

作者： GONG FuZhou liu yuan Institute of Applied Mathematics Academy of Mathematics and Systems ScienceChinese Academy of Sciences

We provide some sharp criteria for studying the ergodicity and asymptotic stability of general Feller semigroups on Polish metric spaces. As an application, the 2D Navier-Stokes equations with degenerate stochastic fo... 详细信息

关键词：渐近稳定性度量空间遍历性 Navier-Stokes方程半群波兰简并

A metabolic intervention strategy to break evolutionary adaptability of tumor for reinforced immunotherapy

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Acta Pharmaceutica Sinica B 2023年第2期13卷 775-786页

作者： Qianhua Feng Yutong Hao Shuaiqi Yang Xiaomin yuan Jing Chen Yuying Mei Lanlan liu Junbiao Chang Zhenzhong Zhang Lei Wang School of Pharmaceutical Sciences Zhengzhou UniversityZhengzhou 450001China Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases Zhengzhou 450001China College of Chemistry Zhengzhou UniversityZhengzhou 450001China Department of Pharmacy The Third Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052China

The typical hallmark of tumor evolution is metabolic dysregulation.In addition to secreting immunoregulatory metabolites,tumor cells and various immune cells display different metabolic pathways and plasticity.Harnessing the metabolic differences to reduce the tumor and immunosuppressive cells while enhancing the activity of positive immunoregulatory cells is a promising strategy.We develop a nanoplatform(CLCeMOF)based on cerium metal-organic framework(CeMOF)by lactate oxidase(LOX)modification and glutaminase inhibitor(CB839)loading.The cascade catalytic reactions induced by CLCeMOF generate reactive oxygen species“storm”to elicit immune responses.Meanwhile,LOX-mediated metabolite lactate exhaustion relieves the immunosuppressive tumor microenvironment,preparing the ground for intracellular regulation.Most noticeably,the immunometabolic checkpoint blockade therapy,as a result of glutamine antagonism,is exploited for overall cell mobilization.It is found that CLCeMOF inhibited glutamine metabolism-dependent cells(tumor cells,immunosuppressive cells,etc.),increased infiltration of dendritic cells,and especially reprogrammed CD8^(+)T lymphocytes with considerable metabolic flexibility toward a highly activated,long-lived,and memory-like phenotype.Such an idea intervenes both metabolite(lactate)and cellular metabolic pathway,which essentially alters overall cell fates toward the desired situation.Collectively,the metabolic intervention strategy is bound to break the evolutionary adaptability of tumors for reinforced immunotherapy.

关键词： Metabolic intervention Immunotherapy Glutamine metabolism Lactate oxidase Reactive oxygen species Cerium metal-organic framework Immunogenic tumor cell death Drug delivery

Delivery of Biomimetic Liposomes via Meningeal Lymphatic Vessels Route for Targeted Therapy of Parkinson’s Disease

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Research 2023年第3期6卷 507-519页

作者： Jing liu Duyang Gao Dehong Hu Siyi Lan Yu liu Hairong Zheng Zhen yuan Zonghai Sheng Faculty of Health Sciences Centre for Cognitive and Brian SciencesUniversity of MacaoMacao SAR 999078P.R.China Paul C.Lauterbur Research Center for Biomedical Imaging Key Laboratory for Magnetic Resonance and Multimodality Imaging of Guangdong ProvinceShenzhen Key Laboratory of Ultrasound Imaging and TherapyCAS Key Laboratory of Health InformaticsInstitute of Biomedical and Health EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055P.R.China

Targeted therapy of Parkinson’s disease is an important challenge because of the blood–brain barrier limitation.Here,we propose a natural killer cell membrane biomimetic nanocomplex(named BLIPO-CUR)delivered via the meningeal lymphatic vessel(MLV)route to further the therapeutic efficacy of Parkinson’s disease.The membrane incorporation enables BLIPO-CUR to target the damaged neurons,thus improving their therapeutic efficacy through clearing reactive oxygen species,suppressing the aggregation ofα-synuclein,and inhibiting the spread of excessα-synuclein species.Compared with the conventional intravenous injection,this MLV administration can enhance the delivered efficiency of curcumin into the brain by~20 folds.The MLV route administration of BLIPO-CUR enhances the treatment efficacy of Parkinson’s disease in mouse models by improving their movement disorders and reversing neuron death.Our findings highlight the great potential of MLV route administration used as targeted delivery of drugs to the brain,holding a great promise for neurodegenerative disease therapy.

关键词： Targeted drugs aggregation

Towards superior lithium-sulfur batteries with metal-organic frameworks and their derivatives

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Tungsten 2022年第4期4卷 269-283页

作者： Ning yuan Yi-Rui Deng Shan-Hu Wang Li Gao Jin-Lin Yang Na-Chuan Zou Bing-Xin liu Jun-Qing Zhang Rui-Ping liu Lei Zhang School of Chemical and Environmental Engineering China University of Mining and Technology(Beijing)Beijing100083China School of Mechanical Engineering Qinghai UniversityXining810016China School of Materials Science and Engineering Tsinghua UniversityBeijing100083China Department of Mechanical Engineering University of Alaska FairbanksFairbanksAK99775-5905USA

Lithium-sulfur batteries(LSBs)are one of the most promising energy storage devices in the future due to their high theoretical specific capacity(1675 mA·h·g^(-1))and energy density(2600 W·h·kg^(-1)).However,the severe capacity decay caused by the shuttle effect of polysulfides needs to be addressed before the practical application.Metal-organic frameworks(MOFs)and their derivatives are known for their large specific surface area,high porosity,abundant functional groups,and good chemical stability.Thus,they have been widely investigated in LSBs.This review introduces the principles of the LSBs and origination of the shuttle effect first summarizes various methods of limiting polysulfide diffusion by MOFs and their derivatives both in cathodes and separators,and provides an in-depth discussion of the immobilization mechanisms,which helps to understand the advantages and disadvantages of each method.The mechanisms,such as structure and pore size tuning,chemical absorption,and catalytic conversion,are discussed.Finally,based on the method of MOFs and their derivatives to inhibit the diffusion of polysulfides,the application prospect of MOFs and their derivatives in LSBs technology are proposed.

关键词： Metal-organic frameworks Lithium-sulfur batteries Cathode Separator Shuttle effect