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The microbiota in spider mite feces potentially reflects intestinal bacterial communities in the host

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Insect Science 2020年第5期27卷 859-868页

作者： yu-xi zhu Zhang-Rong Song yue-Ling Song Dian-Shu Zhao xiao-yue Hong Department of Entomology Nanjing Agricultural UniversityNanjingChina

Microorganisms prov ide many physiological functions to herbivorous *** mites(genus Tetranychus)are important agricultural pests throughout the world;however,the composition of the spider mite microbial community,especially gut micro-biome,remains ***,we investigated the bacterial community in five spider mite species and their associated feces by deep sequencing of the 16S rRNA *** composi-tion of the bacterial community was significantly different among the five prevalent spider mite species,and some bacterial symbionts showed host-species ***,the abundance of the bacterial community in spider mite feces was significantly higher than that in the corresponding spider mite ***,Flavobacterium was detected in all samples,and represent a"core microbiome".Remarkably,the maternally inherited endosymbiont Wolbachia was detected in both spider mite and ***,these results offer insight into the complex community of symbionts in spider mites,and give a new direction for future studies.

关键词： bacterial community fces 16S rRNA spider mite Wolbachia

Antibiotic exposure perturbs the bacterial community in the small brown planthopper Laodelphax striatellus

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Insect Science 2020年第5期27卷 895-907页

作者： Xu Zhang Tong-Pu Li Chun-Ying Zhou Dian-Shu Zhao yu-xi zhu xiao-Li Bing Hai-Jian Huang xiao-yue Hong Department of Entomology Nanjing Agricultural UniversityNanjingChina

Bacteria symbionts in herbivores play an important role in host biology and ecology,and are affected by environmental factors such as temperature,diet,habitat,antibiotics and so ***,the effects of antibiotics on the microbiome of the small brown planthopper Laodelphax striatellus(SBPH)remain ***,we studied the effects of tetracycline on the diversity and composition of bacterial colonies in different tissues of SBPH using high throughput sequencing of 16S ribosomal RNA *** results show that Proteobacteria,Firmicutes,Bacteroidetes,Actinobacteria were most abundant in SBPH,and the genera Asaia and Wolbachia were most abundant in all body parts of *** treatment had persistent effects on the composition of the SBPH *** depleted the population of Firmicutes,Bacteroidetes,Tenericutes and Fusobacteria,and nearly 100%eliminated Wolbachia,Bacteroides and Abiotrophia in ***,these results suggest that antibiotic exposure affects the bacteria symbionts of different body parts in SBPH and will facilitate future studies of the bacterial symbionts of arthropod hosts.

关键词： antibiotics gut Laodelphax striatellus microbial structure ovary

A Lindqvist-type [W_(6)O_(19)]^(2-) organic–inorganic compound: synthesis, characterization, antibacterial activity and preliminary studies on the mechanism of action

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Tungsten 2022年第2期4卷 121-129页

作者： Meng Zhao xi-yu zhu Yan-Zhen Li Jiang-Nan Chang Ming-Xue Li Li-Hua Ma xiao-yuan Guo Henan Key Laboratory of Polyoxometalate Chemistry Institute of Molecular and Crystal EngineeringSchool of Chemistry and Chemical EngineeringHenan UniversityKaifeng475004China Agricultural Products’Quality and Safety Testing Center of Kaifeng Kaifeng Agriculture and Rural BureauHenan475004China

In this paper,a new organic–inorganic hybrid compound[Co(L)_(2)]2[W_(6)O_(19)](1)(HL=2-acetylpyridine thiosemicarbazone)was prepared and *** compound 1 exhibits remarkable antibacterial activity by determination of minimum inhibitory concentration(MIC)against Staphylococcus aureus(***,0.06μg·mL^(−1))and Escherichia coli(***,0.24μg·mL^(−1)),***,the potential mechanism of compound 1 was studied in *** potential causes of bacteria death were cell wall/membrane disruption,inhibition of intracellular respiratory chain dehydrogenases(RCD)activity,destruction of reactive oxygen species(ROS)and depletion of glutathione(GSH).

关键词： Isopolytungstate Thiosemicarbazone Bioactivity Mechanism of action

维普期刊数据库

Microbial changes and associated metabolic responses modify host plant adaptation in Stephanitis nashi

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Insect Science 2024年第6期31卷 1789-1809页

作者： Tong-Pu Li Chen-Hao Wang Jia-Chu xie Meng-Ke Wang Jie Chen yu-xi zhu De-Jun Hao xiao-yue Hong Co-Innovation Center for Sustainable Forestry in Southern China College of ForestryNanjing Forestry UniversityNanjingJiangsuChina Department of Entomology Nanjing Agricultural UniversityNanjingJiangsuChina Department of Entomology College of Plant ProtectionYangzhou UniversityYangzhouJiangsuChina

Symbiotic microorganisms are essential for the physiological processes of herbivorous pests,including the pear lace bug Stephanitis nashi,which is known for causing extensive damage to garden plants and fruit trees due to its exceptional adaptability to diverse host ***,the specific functional effects of the microbiome on the adaptation of *** to its host plants remains ***,we identified significant microbial changes in *** on 2 different host plants,crabapple and cherry blossom,characterized by the differences in fungal diversity as well as bacterial and fungal community structures,with abundant correlations between bacteria or *** with the microbiome changes,*** that fed on cherry blossom demonstrated decreased metabolites and downregulated key metabolic pathways,such as the arginine and mitogen-activated protein kinase signaling pathway,which were crucial for host plant ***,correlation analysis unveiled numerous correlations between differential microorganisms and differential metabolites,which were influenced by the interactions between bacteria or *** differential bacteria,fungi,and associated metabolites may modify the key metabolic pathways in ***,aiding its adaptation to different host *** results provide valuable insights into the alteration in microbiome and function of *** adapted to different host plants,contributing to a better understanding of pest invasion and dispersal from a microbial perspective.

关键词： host plant adaptation insect-microbe interaction microbiome metabolite Stephanitis nashi

Effect of Body Positioning on lntra-abdominal Pressure Measurement and Prognosis in Critically III Patients

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麻醉与监护论坛 2011年第1期18卷 37-42页

作者： Min Yi yu Bai xi zhu ICU Peking University Third Hospital Clinical Medicine

Defect Engineering with Rational Dopants Modulation for High‑Temperature Energy Harvesting in Lead‑Free Piezoceramics

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Nano-Micro Letters 2025年第3期17卷 87-101页

作者： Kaibiao xi Jianzhe Guo Mupeng Zheng Mankang zhu yudong Hou Key Laboratory of Advanced Functional Materials Ministry of EducationCollege of Materials Science and EngineeringBeijing University of TechnologyBeijing 100124People’s Republic of China

High temperature piezoelectric energy harvester(HTPEH)is an important solution to replace chemical battery to achieve independent power supply of HT wireless ***,simultaneously excellent performances,including high figure of merit(FOM),insulation resistivity(ρ)and depolarization temperature(Td)are indispensable but hard to achieve in lead-free piezoceramics,especially operating at 250°C has not been reported ***,well-balanced performances are achieved in BiFeO3–BaTiO3 ceramics via innovative defect engineering with respect to delicate manganese *** to the synergistic effect of enhancing electrostrictive coefficient by polarization configuration optimization,regulating iron ion oxidation state by high valence manganese ion and stabilizing domain orientation by defect dipole,comprehensive excellent electrical performances(Td=340°C,ρ250°C>10^(7)Ωcm and FOM_(250°C)=4905×10^(–15)m^(2)N^(−1))are realized at the solid solubility limit of manganese *** HT-PEHs assembled using the rationally designed piezoceramic can allow for fast charging of commercial electrolytic capacitor at 250°C with high energy conversion efficiency(η=11.43%).These characteristics demonstrate that defect engineering tailored BF-BT can satisfy high-end HT-PEHs requirements,paving a new way in developing selfpowered wireless sensors working in HT environments.

关键词： Lead-free piezoceramic Defect engineering Dopants modulation High-temperature Piezoelectric energy harvester

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薄壁结构棱边强化效果

交通运输工程学报 2016年第5期16卷 57-65页

作者：郑玉卿朱西产胡强刘觐同济大学汽车学院上海201804 江西省科学院应用物理研究所江西南昌330029

基于方管理想化折叠单元模型、塑性挤压过程能量耗散分解法与棱边强化薄壁方管在轴向静态压溃作用下的能量平衡修正方程,分别导出了棱边强化薄壁方管的平均压溃力、吸能预测与棱边强化效果的理论表达式。建立了系列棱边强化薄壁方管准... 详细信息

基于方管理想化折叠单元模型、塑性挤压过程能量耗散分解法与棱边强化薄壁方管在轴向静态压溃作用下的能量平衡修正方程,分别导出了棱边强化薄壁方管的平均压溃力、吸能预测与棱边强化效果的理论表达式。建立了系列棱边强化薄壁方管准静态轴向压溃有限元模型,导入LS-DYNA程序进行弹塑性动力学仿真,获得了平均压溃力,分析了棱边应力强化的敏感性。将棱边强化技术应用于某车前保横梁和吸能盒相应棱边强度设计中,采用超高应力强化棱边和普通延性钢板组合去置换较高强度钢薄壁结构,在冲击试验验证过的有限元模型基础上,建立了棱边强化前保险杠子结构独立评价有限元模型,分别进行了棱边强化模型和原始模型的50km·h^(-1)正碰仿真试验。仿真结果表明:导出的平均压溃力公式可以预测棱边与平板屈服强度比为1~4的棱边强化薄壁方管轴向压溃力学特性,仿真结果与理论结果的最大偏差不超过5.66%;由前保险杠子结构正碰仿真结果得到了棱边强化前后近似的塑性变形模式与传力路径,能量吸收差值不超过0.3kJ。可见,选择性棱边应力强化后的普通延性钢前保险杠子结构有望实现等效置换较高强度钢前保险杠子结构。

关键词：汽车工程薄壁结构棱边强化数值仿真力学特性前保横梁吸能盒

维普期刊数据库

Asymmetric interfacial engineering regulated charge distribution on Ru/Ni-N-C sites for efficient hydrogen evolution reaction in alkaline and seawater electrolytes

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Science China Chemistry 2025年

作者： Rui yu xi Cao Chengyang zhu Qingqing Chen Ziyi Yan Binbin Jiang Junjie Mao xianwen Wei Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes College of Chemistry and Materials ScienceAnhui Normal University Anhui Provincial Key Laboratory of Advanced Catalysis and Energy Materials School of Chemistry and Chemical Engineering Anqing Normal University School of Chemistry and Chemical Engineering Anhui University of Technology

Developing highly efficient and cost-effective electrocatalysts for hydrogen evolution reaction（HER） is grandly challenging in alkaline and alkaline seawater electrolytes. Herein, the asymmetric interfacial active sites with Ru nanoparticles and Ni single atoms in Ru/Ni-N-C were designed through a solvothermal-pyrolysis process. Constructing highly asymmetric interfacial active sites with a strong electron delocalization effect significantly improves HER kinetics. As expected, Ru/Ni-N-C requires low overpotentials with around 20 mV at 10 mA cm-2and robust durability over 48 h in alkaline and alkaline seawater *** at 200 mA cm-2, the overpotentials are close to 100 mV in both above electrolytes for Ru/Ni-N-C. Density function theory calculation results suggest that the asymmetric interface between Ru nanoparticle and Ni-N-C could accelerate the dissociation of water molecules and modulate the hydrogen species, consequently improving the HER performances. This work opens a unique approach for constructing advanced materials for energy conversion.

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Deciphering Water Oxidation Catalysts:The Dominant Role of Surface Chemistry over Reconstruction Degree in Activity Promotion

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Nano-Micro Letters 2025年第3期17卷 340-354页

作者： Li An Jianyi Li yuanmiao Sun Jiamin zhu Justin zhu Yeow Seow Hong Zhang Nan Zhang Pinxian xi * Zhichuan JXu Chun‑Hua Yan State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceFrontiers Science Center for Rare IsotopesCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000People’s Republic of China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore Faculty of Materials Science and Energy Engineering Institute of Technology for Carbon NeutralityShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Key Laboratory of Electromagnetic Materials and Devices National Center for International Research On Photoelectric and Energy MaterialsSchool of Materials and EnergyElectron Microscopy CenterYunnan UniversityKunming 650091People’s Republic of China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030People’s Republic of China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsPKU‑HKU Joint Laboratory in Rare Earth Materials and Bioinorganic ChemistryPeking UniversityBeijing 100871People’s Republic of China

Water splitting hinges crucially on the availability of electrocatalysts for the oxygen evolution *** surface reconstruction has been widely observed in perovskite catalysts,and the reconstruction degree has been often correlated with the activity ***,a systematic study on the roles of Fe substitution in activation of perovskite LaNiO_(3)is *** substituting Fe content influences both current change tendency and surface reconstruction ***_(0.9)Fe_(0.1)O_(3)is found exhibiting a volcano-peak intrinsic activity in both pristine and reconstructed among all substituted perovskites in the LaNi_(1-x)Fe_(x)O_(3)(x=0.00,0.10,0.25,0.50,0.75,1.00)*** reconstructed LaNi_(0.9)Fe_(0.1)O_(3)shows a higher intrinsic activity than most reported NiFe-based ***,density functional theory calculations reveal that Fe substitution can lower the O 2p level,which thus stabilize lattice oxygen in LaNi0.9Fe0.1O3 and ensure its long-term ***,it is vital interesting that activity of the reconstructed catalysts relied more on the surface chemistry rather than the reconstruction *** effect of Fe on the degree of surface reconstruction of the perovskite is decoupled from that on its activity enhancement after surface *** finding showcases the importance to customize the surface chemistry of reconstructed catalysts for water oxidation.

关键词： Oxygen evolution reaction Perovskite oxides Doping Activation and reconstruction