检索结果-南通市图书馆

Science China(Technological Sciences) 2024年第1期67卷 209-220页

作者： ZHU GuoLiang liu kexin GU HaiBo LÜJinHu School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China Zhongguancun Laboratory Beijing 100094China

This paper investigates the consensus-based formation control problem for multi-agent systems with unknown nonlinear *** achieve the desired formation,we propose two formation controllers to achieve the desired formation,one based on system states and the other on system *** proposed controllers utilize adaptive gains to avoid global information and neural networks to estimate and compensate for *** proposed event-triggered schemes avoid continuous communication among agents and exclude the Zeno *** analysis reveals that formation errors are bounded,and numerical simulations are used to validate the effectiveness of the proposed approaches.

关键词： formation control neural network adaptive control event-triggered communication multi-agent systems

Insights into sensitizing and eliciting capacity of gastric and gastrointestinal digestion products of shrimp(Penaeus vannamei)proteins in BALB/c mice

在线全文

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2024年第1期13卷 339-348页

作者： Yao liu Songyi Lin kexin liu Shan Wang Wang Li Na Sun National Engineering Research Center of Seafood School of Food Science and TechnologyDalian Polytechnic UniversityDalian 116034China Collaborative Innovation Center of Seafood Deep Processing Dalian Polytechnic UniversityDalian 116034China

Shrimp(Penaeus vannamei)proteins have been shown an allergenic potential;however,little information is available on the sensitizing and eliciting capacity of shrimp protein digestion *** this study,a BALB/c mice model was used to explore the allergenicity of shrimp protein sample(SPS)and their gastric and gastrointestinal digestion products(GDS/GIDS).As compared with the SPS groups,the GDS/GIDS groups caused lower specific immunoglobulins(Ig E/Ig G1)levels(P<0.05),but higher than the control groups,indicating that the digestion products sensitized the ***,spleen index,mouse mast cell protease-1(m MCP-1)concentration and proportion of degranulated mast cells were significantly reduced in the GDS/GIDS groups(P<0.05);simultaneously,allergic symptoms,vascular permeability and histopathological changes of tissues were ***,the allergenicity of digestion products cannot be eliminated and still cause systemic allergic reactions in *** study showed that the digestion products of shrimp still had high sensitizing and eliciting capacity.

关键词： Penaeus vannamei Allergenicity Digestion BALB/c mice model

Hexamerin and allergen are required for female reproduction in the American cockroach,Periplaneta americana

在线全文

学校读者我要写书评

暂无评论

Insect Science 2024年第1期31卷 186-200页

作者： Shiming Zhu Xiaoyi Chen Sishi Xia Qin Li Ziqi Ye Shaoting Zhao kexin liu Fangfang liu Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology Institute of Insect Science and TechnologyInstitute of Insect Science and Technology&School of Life SciencesSouth China Normal UniversityGuangzhouChina Guangmeiyuan R&D Center Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied TechnologySouth China Normal UniversityMeizhouGuangdong ProvinceChina Guangdong Laboratory for Lingnan Modern Agriculture South China Agricultural UniversityGuangzhouChina

Reproduction is of great importance for the continuation of the *** insects,the fat body is the major tissue for nutrient storage and involved in vitellogenesis,which is essential for female ***,2 proteins,hexamerin and allergen,were separated from the fat bodies of adult female American cockroaches(Periplaneta americana)and identified as storage proteins,encoding for 733 amino acids with molecular weight of 87.88 kDa and 686 amino acids with molecular weight of 82.18 kDa,*** encoding genes of these 2 storage proteins are mainly expressed in the fat *** interference-mediated knockdown of Hexamerin and Allergen in the early stage of the first reproductive cycle in females suppressed vitellogenesis and ovarian maturation,indicating that these storage proteins are involved in controlling ***,the expression of Hexamerin and Allergen was repressed by knockdown of the juvenile hormone(JH)receptor gene Met and the primary response gene Kr-h1,and was induced by methoprene,a JH analog,in both in vivo and in vitro ***,we have determined that hexamerin and allergen are identified as storage proteins and play an important role in promoting female reproduction in the American *** expression of their encoding genes is induced by JH *** data reveal a novel mechanism by which hexamerin and allergen are necessary for JH-stimulated female reproduction.

关键词： fat body juvenile hormone ovary reproduction storage protein vitellogenesis

NIR-II Organic Photothermal Cocrystals with Strong Charge Transfer Interaction for Flexible Wearable Heaters

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

Chinese Journal of Chemistry 2024年第14期42卷 1563-1570页

作者： Dong Zhang Shuyu Li Shaosong Gao Siyao Fu kexin liu Dan He Huapeng liu Xiaotao Zhang Wenping Hu Key Laboratory of Organic Integrated Circuit Ministry of Education&Tianjin Key Laboratory of Molecular Optoelectronic SciencesDepartment of ChemistryInstitute of Molecular Aggregation ScienceTianjin UniversityTianjin300072 China Key Laboratory of Organic Integrated Circuits Ministry of Education&Tianjin Key Laboratory of Molecular Optoelectronic SciencesDepartment of ChemistrySchool of ScienceTianjin UniversityTianjin300072 China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhouFujian350207 China College of Chemistry and Chemical Engineering Central South UniversityChangshaHunan410083 China

The organic cocrystal strategy has provided a convenient and efficient platform for preparing organic photothermal ***,the rapidly directional preparation of cocrystals with desirable photothermal properties remains challenging due to a lack of suitable design ***,two new photothermal cocrystals,MTC and MFC,based on acceptor molecules(TCNQ and F4TCNQ)with different electron-withdrawing capacities were quickly prepared by the coprecipitation method,aiming to explore the effect of charge transfer(CT)interaction on photothermal *** with MTC,the stronger intermolecular CT interaction in MFC facilitates extending the absorption range(from the NIR-I to the NIR-II region)and enhancing the non-radiative transition *** the 808 nm laser irradiation,the photothermal conversion efficiency(PCE)of MFC is 54.6%,whereas MTC displays a mere 36.8%.The MFC cocrystal was further combined with a flexible polymer substrate(HPDMS)to prepare a flexible wearable heater(HPDMS@MFC),which exhibits excellent NIR-II photothermal *** work points out a research direction for the rapid assembly of efficient photothermal cocrystals and additionally provides an extensive application prospect for organic photothermal cocrystals in the field of wearable devices.

关键词： Organic photothermal cocrystals Charge transfer NiR-II region Density functional calculations Flexible wearable heaters Crystal engineering Orbital hybridization Fluorides

Potassium transporter OsHAK9 regulates seed germination under salt stress by preventing gibberellin degradation through mediating OsGA2ox7 in rice

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

Journal of Integrative Plant Biology 2024年第4期66卷 731-748页

作者： Peng Zeng Ting Xie Jiaxin Shen Taokai Liang Lu Yin kexin liu Ying He Mingming Chen Haijuan Tang Sunlu Chen Sergey Shabala Hongsheng Zhang Jinping Cheng National Key Laboratory of Crop Genetics&Germplasm Enhancement and Utilization Jiangsu Collaborative Innovation Center for Modern Crop ProductionHainan Yazhou Bay Seed LabJiangsu Province Engineering Research Center of Seed Industry Science and TechnologyNanjing Agricultural UniversityNanjing 210095China International Research Center for Environmental Membrane Biology Foshan UniversityFoshan 528000China School of Biological Sciences University of Western AustraliaCrawley WA 6009Australia

Soil salinity has a major impact on rice seed germination,severely limiting rice ***,a rice germination defective mutant under salt stress(gdss)was identified by using chemical *** GDSS gene was detected via MutMap and shown to encode potassium transporter *** analysis of complementation and mutant lines demonstrated that OsHAK9 was an essential regulator responsible for seed germination under salt ***9 is highly expressed in germinating seed *** contents and non-invasive micro-test technology results showed that OsHAK9 restricted K^(+)efflux in salt-exposed germinating seeds for the balance of K^(+)/Na^(+).Disruption of OsHAK9 significantly reduced gibberellin 4(GA4)levels,and the germination defective phenotype of oshak9a was partly rescued by exogenous GA_(3)treatment under salt *** sequencing(RNA-seq)and real-time quantitative polymerase chain reaction analysis demonstrated that the disruption of OsHAK9 improved the GA-deactivated gene OsGA2ox7 expression in germinating seeds under salt stress,and the expression of OsGA2ox7 was significantly inhibited by salt *** mutants of OsGA2ox7 created using clustered,regularly interspaced,short palindromic repeat(CRISPR)/CRISPR-associated nuclease 9 approach displayed a dramatically increased seed germination ability under salt ***,our results highlight that OsHAK9 regulates seed germination performance under salt stress involving preventing GA degradation by mediating OsGA2ox7,which provides a novel clue about the relationship between GA and OsHAKs in rice.

关键词： GDSS gibberellins potassium transporter rice salt tolerance seed germination

Optimizing depth of field in 3D light-field display by analyzing and controlling light-beam divergence angle

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2024年第1期22卷 14-20页

作者：于迅博王一平高鑫李涵宇刘柯新颜玢玢桑新柱 State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications(BUPT)Beijing 100876China

A concept of divergence angle of light beams(DALB)is proposed to analyze the depth of field(DOF)of a 3D light-field display *** mathematical model between DOF and DALB is established,and the conclusion that DOF and DALB are inversely proportional is *** reduce DALB and generate clear depth perception,a triple composite aspheric lens structure with a viewing angle of 100°is designed and experimentally *** DALB-constrained 3D light-field display system significantly improves the clarity of 3D images and also performs well in imaging at a 3D scene with a DOF over 30 cm.

关键词： 3D light-field display depth of field divergence angle of light beams compound lens

在线全文

学校读者我要写书评

暂无评论

更道德抑或更社会:绿色消费的自我建构机制

心理科学进展 2024年第10期32卷 1726-1735页

作者：柴民权刘可欣靳菲兰州大学管理学院兰州730000 四川大学商学院成都610064

消费者的绿色消费行为不仅出于环境关切的目的,还兼具构建自我身份的功能导向。本文通过梳理绿色消费动机的相关研究,发现个体通过绿色消费进行自我建构的双重机制:发挥道德补偿作用,消弭道德失调状态,重塑个体的内在道德身份;充当社会... 详细信息

消费者的绿色消费行为不仅出于环境关切的目的,还兼具构建自我身份的功能导向。本文通过梳理绿色消费动机的相关研究,发现个体通过绿色消费进行自我建构的双重机制:发挥道德补偿作用,消弭道德失调状态,重塑个体的内在道德身份;充当社会地位、权力、声望和财富的信号表征体系,彰显个体的外在社会身份。本文进而基于自我建构的理论视角,提出了绿色消费心理动力机制的整合模型。未来研究可从绿色消费自我建构的路径模式、关系机制、研究领域和对象等方面进行深入探讨。

关键词：绿色消费自我建构道德补偿信号表征

在线全文

学校读者我要写书评

暂无评论

公共图书馆故事会的选书原则与策略研究

河北科技图苑 2024年第3期37卷 40-45页

作者：刘可歆温州大学图书馆浙江温州325035

故事会是公共图书馆开展得最广泛的阅读推广活动。为了探究馆员对公共图书馆故事会的选书策略,本文以讲故事经验丰富的儿童馆员为研究对象,采用了访谈法和质性研究编码的方法,结合专业文献,研究公共图书馆故事会的选书原则,提出从故事... 详细信息

故事会是公共图书馆开展得最广泛的阅读推广活动。为了探究馆员对公共图书馆故事会的选书策略,本文以讲故事经验丰富的儿童馆员为研究对象,采用了访谈法和质性研究编码的方法,结合专业文献,研究公共图书馆故事会的选书原则,提出从故事情节、故事人物、书中图画、语言文字、内容的延伸性和互动性来构建选书策略,以提高公共图书馆故事会整体的专业水平。

关键词：公共图书馆故事会选书策略儿童儿童馆员

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

酶解荷叶制备荷叶小分子多肽的研究

中国饲料 2024年第1期 51-57页

作者：郝晓华刘可心忻州师范学院生物系山西忻州034300

本试验以荷叶为原料,利用超声波辅助碱性蛋白酶酶解荷叶制备小分子多肽。选用底物浓度、酶解温度、酶解pH、酶解时间四个因素进行单因素试验。再通过响应面试验对提取荷叶多肽工艺进行优化。最后以多肽浓度为标准,得到最佳酶解得荷叶多... 详细信息

本试验以荷叶为原料,利用超声波辅助碱性蛋白酶酶解荷叶制备小分子多肽。选用底物浓度、酶解温度、酶解pH、酶解时间四个因素进行单因素试验。再通过响应面试验对提取荷叶多肽工艺进行优化。最后以多肽浓度为标准,得到最佳酶解得荷叶多肽的条件为:底物浓度4.07%、酶解温度54.96℃、酶解pH 8.88、酶解时间5.19 h。在上述条件下,得到多肽浓度为8.98×10^(-3) mg/mL。

关键词：荷叶多肽酶解单因素响应面

在线全文

学校读者我要写书评

暂无评论

船用起重机双摆吊重减摆动力学分析与实验

华中科技大学学报（自然科学版） 2024年第1期52卷 72-77页

作者：王建立刘可心王生海孙玉清大连海事大学轮机工程学院辽宁大连116026 渤海大学航运学院辽宁锦州121007 渤海船舶重工有限责任公司辽宁葫芦岛125004

针对船用回转旋臂式起重机双摆吊重装置的减摆问题,分析了吊钩摆动与吊重摆动之间的动态耦合关系,建立了船舶横摇、纵摇工况下的减摆装置动力学准确模型.利用Matlab/Simulink进行三维动力学分析,研究船舶激励、起重机状态、负载位姿和... 详细信息

针对船用回转旋臂式起重机双摆吊重装置的减摆问题,分析了吊钩摆动与吊重摆动之间的动态耦合关系,建立了船舶横摇、纵摇工况下的减摆装置动力学准确模型.利用Matlab/Simulink进行三维动力学分析,研究船舶激励、起重机状态、负载位姿和减摆参数对双摆吊重系统摆角的影响规律,最后进行了双摆吊重减摆实验.结果表明:吊重摆动的仿真趋势与实验结果相符合,验证了动力学模型的准确性及减摆方法的有效性,所得结果对工程上的船用旋臂式起重机双摆吊重防摆研究具有一定的参考意义.

关键词：船用起重机二级摆动力学分析防摆控制基座激励