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Effects of a combined infection with Paranosema locustae and Beauveria bassiana on Locusta migratoria and its gut microflora

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Insect Science 2021年第2期28卷 347-354页

作者： Shu-Qian Tan Yue Yin Kai-Li Cao Xin-Xin Zhao Xiao-Yu wang Yu-Xin Zhang wang-peng shi Department of Entomology and MO A Key Lab of Pest Monitoring and Green Management College of Plant ProtectionChina Agricultural UniversityBeijingChina Institution of Plant Protection Academy of Ningxia Agricultural and Forestry ScienceYinchuanChina

Even though Paranosema locustae is widely used in China as a biological agent for controlling grasshoppers,the mortality rate is initially quite *** study sought to determine whether the simultaneous use of *** and Beauveria bassiana would be a more effective control ***,changes in the intestinal microbial communities of migratory locusts infected with the two pathogens were analyzed to investigate the roles of gut microbes in pathogen-host *** mortality rate of locusts inoculated with *** and *** simultaneously was not significantly higher than expected but the mortality rates of locusts inoculated with *** 3,6,and 9 days after inoculation with *** were significantly higher than if their effects were additive,indicating synergism.A MiSeq analysis found that Weissella was the most common bacterium,representing 41.48%and 51.62%of the total bacteria in the mid-and hindguts,respectively,and the bacterial declines were greatest during dual infections with *** and *** appropriately timed combined application of *** and *** was more effective against locusts than either treatment ***,the combined inoculation of the two pathogens changed the gut microflora of locusts,indicating the potential relevancy of their synergistic effects on locust control.

关键词： entomopathogenic fungi intestinal symbiotic bacteria microsporidia migratory locust

Singular Perturbations for a Class of Fourth-order Nonlinear Boundary Value Problem

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Chinese Quarterly Journal of Mathematics 2011年第2期26卷 217-222页

作者： LI Xu wang shi-peng Department of Mathematics and Physics Hefei University Hefei 230601 China Hefei No.7 Middle School Hefei 230001 China

This paper is devoted to study the following the singularly perturbed fourth-order ordinary differential equation ∈y（4） =f（t,y＇,y＇＇,y＇＇＇）,0t1,0ε1 with the nonlinear boundary conditions y（0）=y＇（1）=0,p（y＇＇（0）,y＇＇＇（0））=0,q（y＇＇（1）,y＇＇＇（1））=0 where f：[0,1]×R3→R is continuous,p,q：R2→R are *** certain conditions,by introducing an appropriate stretching transformation and constructing boundary layer corrective terms,an asymptotic expansion for the solution of the problem is *** then the uniformly validity of solution is proved by using the differential inequalities.

关键词： singular perturbation nonlinear boundary value problem differential inequality asymptotic expansion

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不确定性闭环系统特征上下界的二阶摄动法

吉林大学学报（工学版） 2006年第B3期36卷 56-61页

作者：王世鹏陈塑寰吉林大学机械科学与工程学院长春130022

用凸模型理论讨论了参数不确定系统的振动控制问题,把不确定系统的振动控制转化为确定性问题来处理。讨论了不确定参数对闭环系统特征值的影响,提出了闭环系统特征值上下界的二阶摄动估计的计算方法,并通过数值算例证明了该方法的有效性。

关键词：工程力学参数不确定系统振动控制凸模型理论二阶摄动闭环系统特征值上下界

A Mn-porphyrinic metal–organic framework immobilizing glucose oxidase for combined photodynamic/chemodynamic/starvation therapy

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Tungsten 2025年第1期7卷 183-194页

作者： Xin-Ran Sun Hao-Ming Yuan Guo-Da Zhang Chao wang Shu-Juan Sun peng-Fei shi Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers School of Chemistry and Chemical Engineering Linyi University

The combination of photodynamic therapy（PDT） and chemodynamic therapy（CDT） in tumor treatment has attracted considerable ***,tumor hypoxia and glutathione（GSH） overproduction in the tumor tissue restricted the progress of their ***,a Mn-porphyrinic metal-organic framework（Mn-TCPP） was constructed by the one-pot method and further used for immobilizing glucose oxidase（GOx） to obtain GOx@*** would rapidly exhaust endogenous glucose into hydrogen peroxide（H2O2） and gluconic acid,thus shutting off the energy supply of tumor cells for starvation ***-TCPP catalyzed H2O2to produce oxygen,regulating the hypoxic tumor microenvironment and in turn improving1O2generation under laser ***,Mn-TCPP can reduce reactive oxygen species consumption owing to the redox reaction between Mn3+and GSH,thus greatly enhancing ***,benefiting from GOx-mediated starvation therapy,Mn2+produced by Mn3+reduction can react with sufficient intracellular H2O2to generate ·OH with high cytotoxicity through a Fenton-like *** treatment by GOx@Mn-TCPP under laser irradiation in vitro,the cell viability of 4T1 and A549 tumor cells reached to 20%,reflecting GOx@Mn-TCPP could give full play to the advantages of PDT/CDT/starvation *** results in vivo demonstrated that GOx@Mn-TCPP mediated synergistic cascade therapy could significantly inhibit tumor growth and improve the therapeutic effect.

关键词： Chemodynamic therapy Immobilizing enzyme Metal–organic frameworks Photodynamic therapy Starvation therapy

Effect of Bi/Si Ratio of BiBSi Glass on Its Structure, Properties and Laser Sealing Shear Strength for Vacuum Glazing

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 13-24页

作者： LIU Wei JIAO Jinxu LUO Dusha ZHOU Junjie shi Lifen wang Weiwei LI Changqing wang peng XIONG Dehua LI Hong State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Silica-Based Materials Laboratory of Anhui Province CNBM Research Institute for Advanced Glass Materials Group Co.LtdBengbu 233018China State Key Laboratory of Advanced Technology for Float Glass CNBM Research Institute for Advanced Glass Materials Group Co.LtdBengbu 233018China

The low-melting glass of Bi2O_(3)-B2O_(3)-SiO_(2)(BiBSi)system was used for the first time for laser sealing of vacuum *** the condition of constant boron content,how the structure and properties vary with Bi/Si ratio in low-melting glass was *** addition,the relationships between laser power,low-melting glass solder with different Bi/Si ratios and laser sealing shear strength were *** results show that a decrease in the Bi/Si ratio can cause a contraction of the glass network of the low-melting glass,leading to an increase of its characteristic temperature and a decrease of its coefficient of thermal *** laser sealing,the copper ions in the low-melting glass play an endothermic role.A change in the Bi/Si ratio will affect the valence state transition of the copper ions in the low-melting *** absorbance of the low-melting glass does not follow the expected correlation with the Bi/Si ratio,but shows a linear correlation with the content of divalent copper *** greater the concentration of divalent copper ions,the greater the absorbance of the low-melting glass,and the lower the laser power required for laser *** shear strength of the low melting glass solder after laser sealing was tested,and it was found that the maximum shear strength of Z1 glass sample was the highest up to 2.67 MPa.

关键词： Bi2O_(3)-B2O_(3)-SiO_(2)(BiBSi) Bi/Si ratio low-melting glass laser sealing vacuum glazing

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煤矿瓦斯爆炸事故鱼刺图分析

煤矿安全 2011年第2期42卷 113-116页

作者：王世鹏中国地质大学(北京)地球科学与资源学院北京100083

在矿井采掘生产过程中煤矿瓦斯爆炸事故是经常发生的,必须加强预防和控制瓦斯爆炸事故方面的研究。根据瓦斯事故爆炸机理和事故致因理论,应用鱼刺图分析方法对煤矿瓦斯爆炸事故分别进行人的因素、机的因素以及环境的因素分析,通过对事... 详细信息

在矿井采掘生产过程中煤矿瓦斯爆炸事故是经常发生的,必须加强预防和控制瓦斯爆炸事故方面的研究。根据瓦斯事故爆炸机理和事故致因理论,应用鱼刺图分析方法对煤矿瓦斯爆炸事故分别进行人的因素、机的因素以及环境的因素分析,通过对事故诸多因素的分析,找出发生煤矿瓦斯爆炸事故各因素之间的逻辑关系并建立事故结构分析图,结合事故结构分析图和相关瓦斯爆炸事故的经验教训,提出了相应的预防措施,有效预防和减少伤亡事故的发生,可为煤矿安全管理提供科学依据。

关键词：鱼刺图煤矿瓦斯爆炸人-机-环境

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中国企业参与蒙古国矿业投资的机遇与风险

中国矿业 2015年第S1期24卷 169-173页

作者：王世鹏商务部国际贸易经济合作研究院北京100710

蒙古国矿产资源丰富,是中国企业走出去参与国际矿业开发投资的重要国家之一。但是,由于蒙古国外交平衡战略、投资和法律法规等政策多变、矿业市场竞争激烈、开发投资成本提高等因素制约,中蒙矿产资源开发合作时常受阻。随着蒙古国矿业... 详细信息

蒙古国矿产资源丰富,是中国企业走出去参与国际矿业开发投资的重要国家之一。但是,由于蒙古国外交平衡战略、投资和法律法规等政策多变、矿业市场竞争激烈、开发投资成本提高等因素制约,中蒙矿产资源开发合作时常受阻。随着蒙古国矿业投资相关法律法规的不断完善,特别是中蒙关系提升为全面战略伙伴关系,中蒙合作开发矿产资源进入历史最好的合作发展时期。中国企业应抓住机遇,坚持互利共赢原则,重视环保,惠及民生,承担社会责任,积极参与蒙古国矿业投资开发。

关键词：中国企业蒙古国矿产资源投资

我国区域矿产资源、环境与经济社会协调发展度评价研究——以陕西省为例

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资源与产业 2010年第S1期12卷 125-129页

作者：王世鹏中国地质大学地球科学与资源学院北京100083

矿产资源是社会经济发展的物质基础,矿产资源、环境与经济社会协调发展是实现区域社会经济可持续发展的根本保证。本文借鉴相关经济社会发展与生态环境协调发展的评价指标体系与计算模型,建立区域矿产资源、环境与经济社会复合系统指标... 详细信息

矿产资源是社会经济发展的物质基础,矿产资源、环境与经济社会协调发展是实现区域社会经济可持续发展的根本保证。本文借鉴相关经济社会发展与生态环境协调发展的评价指标体系与计算模型,建立区域矿产资源、环境与经济社会复合系统指标体系。根据协调发展度等级标准,实例评价分析陕西省矿产资源与经济社会协调发展程度,对于区域可持续发展战略的实施具有重要意义。

关键词：矿产资源协调发展可持续发展层次分析法陕西省

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变截面辊弯成形边波机理

塑性工程学报 2013年第5期20卷 117-121页

作者：韩飞王世鹏北方工业大学机电工程学院北京100144

通过建立柔性变截面辊弯有限元模型,分析变截面型材边腿的应力应变变化过程,对变截面辊弯过程中型材边腿出现边波褶皱的机理进行研究。结果表明,型材凹弧区边腿在成形后纵向受拉,表面光滑无褶皱;当其纵向压应力足够大时,凸弧区边腿会由... 详细信息

通过建立柔性变截面辊弯有限元模型,分析变截面型材边腿的应力应变变化过程,对变截面辊弯过程中型材边腿出现边波褶皱的机理进行研究。结果表明,型材凹弧区边腿在成形后纵向受拉,表面光滑无褶皱;当其纵向压应力足够大时,凸弧区边腿会由于失稳而褶皱,出现边波现象。增加边腿高度或减小边腿成形半径,均可以有效扩大凸弧区边腿的最大理论形变率,并增大边波的剧烈程度。

关键词：变截面柔性辊弯边波工艺参数