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输电线路电场分布特征驱动下的无人机巡检避障策略分析

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技术与市场 2024年第9期31卷 74-78页

作者：王骋昊贺凌飞国网西安供电公司陕西西安710032

基于500 kV超高压输电线路,针对架空区域和转角塔区域的电场特性,通过无人机搭载测量仪器收集电场数据,确定电场强度测量的具体方法和路径以确保数据的准确性和代表性,并分析电场强度的分布规律实施无人机的避障策略。研究结果表明:合... 详细信息

基于500 kV超高压输电线路,针对架空区域和转角塔区域的电场特性,通过无人机搭载测量仪器收集电场数据,确定电场强度测量的具体方法和路径以确保数据的准确性和代表性,并分析电场强度的分布规律实施无人机的避障策略。研究结果表明:合理的避障策略可以显著提升无人机在复杂电场环境中的巡检效率和安全性。

关键词：输电线路电场分布特征无人机巡检避障

汉黄芩素通过NRF2/HO-1信号途径诱导大鼠CIA-FLS细胞铁死亡

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中国病理生理杂志 2024年第7期40卷 1276-1282页

作者：何凌飞张超凡连杰申傲轩董倩男康晓吴昊湖北恩施学院湖北恩施455099

目的:探讨汉黄芩素(WOG)通过核因子E2相关因子2(NRF2)/血红素加氧酶1(HO-1)信号途径诱导胶原诱导性关节炎大鼠成纤维细胞样滑膜细胞(大鼠CIA-FLS细胞)铁死亡的机制。方法:将大鼠CIA-FLS细胞分为:对照组、低、中、高剂量(25、50和100μmo... 详细信息

目的:探讨汉黄芩素(WOG)通过核因子E2相关因子2(NRF2)/血红素加氧酶1(HO-1)信号途径诱导胶原诱导性关节炎大鼠成纤维细胞样滑膜细胞(大鼠CIA-FLS细胞)铁死亡的机制。方法:将大鼠CIA-FLS细胞分为:对照组、低、中、高剂量(25、50和100μmol/L)汉黄芩素组、铁死亡抑制剂(LIP-1)组、LIP-1+高剂量汉黄芩素组、HO-1激动剂钴原卟啉(COPP)组和COPP+高剂量汉黄芩素组,CCK-8法检测细胞活力;结晶紫染色法检测细胞形态;检测氧化应激标志物谷胱甘肽(GSH)、丙二醛(MDA)和超氧化物歧化酶(SOD)的水平;DCFH-DA荧光探针检测细胞内活性氧(ROS)的含量,Western blot检测Kelch样ECH关联蛋白1(KEAP-1)、NRF2和HO-1蛋白表达水平。结果:与正常对照组相比,给予WOG处理后,大鼠CIA-FLS细胞活力显著下降(P<0.01),氧化应激水平显著上升(P<0.01),ROS含量显著增加(P<0.01),NRF2和HO-1蛋白表达水平显著下降(P<0.01),KEAP-1水平显著增加(P<0.01);与WOG组相比,LIP-1处理组的细胞活力显著上升(P<0.01),氧化应激水平显著下降(P<0.01),ROS含量显著减少(P<0.01);与WOG组相比,加入COPP后,NRF2和HO-1蛋白表达水平显著上升(P<0.01),KEAP-1水平显著下降(P<0.01)。结论:WOG能通过NRF2/HO-1信号途径,促进氧化应激来诱导大鼠CIA-FLS细胞铁死亡。

关键词：汉黄芩素类风湿关节炎 CIA-FLS细胞 NRF2/HO-1信号通路铁死亡

heavy metal pollution and health risk in China

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Global health Journal 2017年第1期1卷 47-55页

作者： Rian Yu lingfei he Ridong Cai Biyun Li Zhipeng Li Kedi Yang Department of Occupational and Environmental health School of Public HealthGuangdong Pharmaceutical UniversityGuangzhouGuangdong 510310China The First Affiliated Hospital of Guangdong Pharmaceutical University GuangzhouGuangdong 510080China Fuyong Institute for Prevention and health Care Bao'an DistrictShenzhenGuangdong 518103China Department of Occupational and Environmental health MOE Key Lab of Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430030China

Following rapid social and economic development over the past several decades,pollution by heavy metals has been both serious and widespread in many areas of the world,including *** situations of heavy metal pollution in China were reviewed,and the health risk and control policy of such pollution were also analyzed and discussed in present paper.

关键词： heavy metal metal pollution health risk

The Necessary and Sufficient Conditions of Exponential Stability for heat and Wave Equations with Memory

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Journal of Systems Science & Complexity 2024年第3期37卷 1037-1051页

作者： LI lingfei ZHANG Xiaoyi ZHOU Xiuxiang School of Science Northeast Electric Power UniversityJilin 132012China School of Mathematics and Statistics Lingnan Normal UniversityZhanjiang 524048China

This paper is addressed to a study of the stability of heat and wave equations with *** necessary and sufficient conditions of the exponential stability are investigated by the theory of Laplace transform. The results show that the stability depends on the decay rate and the coefficient of the kernel functions of the memory. Besides, the feedback stabilization of the heat equation is obtained by constructing finite dimensional controller according to unstable eigenvalues. This stabilizing procedure is easy to operate and can be applicable for other parabolic equations with memory.

关键词： Memory stability stabilization

Recent advances in switchable surfactants for heavy oil production:A review

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Energy Geoscience 2024年第4期5卷 75-88页

作者： Qi Li lingfei Liu Dejun Sun Zhenghe Xu Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShandong UniversityJinanShandong250100PR China Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials Department of Materials Science and EngineeringSouthern University of Science and TechnologyShenzhenGuangdong518055PR China Key Laboratory of Tertiary Oil Recovery and Oilfield Chemistry PetroChina Dagang Oilfield CompanyTianjin300280PR China

Surfactants are extensively employed in the cold production of heavy ***,producing heavy oil emulsions using conventional surfactants poses a challenge to spontaneous demulsification,necessitating the addition of demulsifiers for oil-water *** inevitably increases the exploitation cost and environmental pollution *** surfactants have garnered much attention due to their dual capabilities of underground heavy oil emulsification and surface *** study focuses on the fundamental working principles and classification of novel switchable surfactants for oil displacement developed in recent *** offers a comprehensive overview of the latest advances in the applications of switchable surfactants in the fields of enhanced oil recovery(EOR),oil sand washing,and oil-water ***,it highlights the existing challenges and future development directions of switchable surfactants for heavy oil recovery.

关键词： heavy oil Switchable surfactant Cold production Emulsification Demulsification

GraphFlow+:Exploiting Conversation Flow in Conversational Machine Comprehension with Graph Neural Networks

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Machine Intelligence Research 2024年第2期21卷 272-282页

作者： Jing Hu lingfei Wu Yu Chen Po Hu Mohammed J.Zaki School of Computer Science Central China Normal UniversityWuhan 430079China Pinterest San Francisco 94016USA Meta Mountain View 94039USA Rensselaer Polytechnic Institute Troy 12180USA

The conversation machine comprehension(MC)task aims to answer questions in the multi-turn conversation for a single ***,recent approaches don’t exploit information from historical conversations effectively,which results in some references and ellipsis in the current question cannot be *** addition,these methods do not consider the rich semantic relationships between words when reasoning about the passage *** this paper,we propose a novel model GraphFlow+,which constructs a context graph for each conversation turn and uses a unique recurrent graph neural network(GNN)to model the temporal dependencies between the context graphs of each ***,we exploit three different ways to construct text graphs,including the dynamic graph,static graph,and hybrid graph that combines the *** experiments on CoQA,QuAC and DoQA show that the GraphFlow+model can outperform the state-of-the-art approaches.

关键词： Conversational machine comprehension(MC) reading comprehension question answering graph neural networks(GNNs) natural language processing(NLP)

PbGIF1 promoting cell-proliferation in pear fruit is transcriptionally activated by Pb RR1

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Horticultural Plant Journal 2024年第3期10卷 689-697页

作者： Huibin Wang Guangya Sha Rui Gao Jianwen Pang Rui Zhai Chengquan Yang Zhigang Wang lingfei Xu College of Horticulture Northwest A&F UniversityYanglingShaanxi 712100China College of Life Science Hebei Agricultural UniversityBaodingHebei 071000China

As a cell proliferation regulator involved in wide biological processes in plants,GRF-INTERACTING FACTOR(GIF)controls different tissues ***,whether GIF participates in fruit development remains *** to transcriptome data,we identified PbGIF1was highly expressed during fruit development in cytokinins induced parthenocarpy *** the present study,the biofunction of PbGIF1 was initially *** of PbGIF1 promoted fruit size of transgenic *** size of flesh fruit was not affected by cell expansion but the cell proliferation was promoted by overexpressing Pb *** accelerated cell proliferation process was also observed in PbGIF1-overexpressed transgenic pear fruit *** transcriptional regulation of cytokinins on PbGIF1 was further confirmed by exogenous CPPU treatments in pear *** investigate the underlying mechanism,the cytokinins-responded factor,PbRR1,was further focused *** results of Yeast-one-hybrid assay suggested that PbRR1 can bind to the promoter sequence of *** transcriptional activation of PbRR1 on PbGIF1 was also confirmed by Dual-Luciferase *** together,the results showed that cytokinins control pear fruit development via the transcriptional activation of PbGIF1 by PbRR1.

关键词： PbGIF1 Cell proliferation Pear Fruit development Cytokinins PbRR1

Insights on advanced g‐C_(3)N_(4)in energy storage:Applications,challenges,and future

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Carbon Energy 2024年第4期6卷 22-78页

作者： Xiaojie Yang Jian Peng lingfei Zhao Hang Zhang Jiayang Li Peng Yu Yameng Fan Jiazhao Wang Huakun Liu Shixue Dou School of Nuclear Technology and Chemistry&Biology Hubei Key Laboratory of Radiation Chemistry and Functional MaterialsHubei University of Science and TechnologyXianningChina Institute for Superconducting and Electronic Materials Australian Institute for Innovative MaterialsUniversity of WollongongNorth WollongongNew South WalesAustralia State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhanChina Institute of Energy Materials Science University of Shanghai for Science and TechnologyShanghaiChina

Graphitic carbon nitride(g‐C_(3)N_(4))is a highly recognized two‐dimensional semiconductor material known for its exceptional chemical and physical stability,environmental friendliness,and pollution‐free *** remarkable properties have sparked extensive research in the field of energy *** review paper presents the latest advances in the utilization of g‐C_(3)N_(4)in various energy storage technologies,including lithium‐ion batteries,lithium‐sulfur batteries,sodium‐ion batteries,potassium‐ion batteries,and *** of the key strengths of g‐C_(3)N_(4)lies in its simple preparation process along with the ease of optimizing its material *** possesses abundant amino and Lewis basic groups,as well as a high density of nitrogen,enabling efficient charge transfer and electrolyte solution ***,the graphite‐like layered structure and the presence of largeπbonds in g‐C_(3)N_(4)contribute to its versatility in preparing multifunctional materials with different dimensions,element and group doping,and conjugated *** characteristics open up possibilities for expanding its application in energy storage *** article comprehensively reviews the research progress on g‐C_(3)N_(4)in energy storage and highlights its potential for future applications in this *** exploring the advantages and unique features of g‐C_(3)N_(4),this paper provides valuable insights into harnessing the full potential of this material for energy storage applications.

关键词： g‐C_(3)N_(4) lithium‐ion batteries lithium‐sulfur batteries potassium‐ion batteries sodium‐ion batteries supercapacitors

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对虾头中呈味物质的抽提和分析

水产学报 1990年第3期14卷 239-243页

作者：贺玲斐黄金陵上海水产大学

随着对虾养殖业的发展,对虾加工的废弃物——对虾头[约占整只对虾30％～40％(W/W)]的数量也随之大增。因此,如何充分而有效地利用它,提高其利用价值,是一个值得研究的课题。目前国内大部份地区仅利用虾头制造鱼粉,作为饲料、饵料甚至肥... 详细信息

随着对虾养殖业的发展,对虾加工的废弃物——对虾头[约占整只对虾30％～40％(W/W)]的数量也随之大增。因此,如何充分而有效地利用它,提高其利用价值,是一个值得研究的课题。目前国内大部份地区仅利用虾头制造鱼粉,作为饲料、饵料甚至肥料,利用价值很低;也有少数地区利用虾头生产“虾味素”、“虾黄素”和“虾酱”等制品。但对于这些制品的化学组成份,尤其是呈味成份的分布及含量尚

关键词：对虾呈味物质抽提