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Constructing heterojunction interface of Co_(3)O_(4)/TiO_(2) for efficiently accelerating acetaminophen degradation via photocatalytic activation of sulfite

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Chinese Chemical Letters 2023年第3期34卷 200-205页

作者： qiangwei li Mengmeng Zhang Yongyi Xu Xiaoqi Quan Yiao Xu Wen liu lidong Wang Department of Environmental Science and Engineering Hebei Key Lab of Power Plant Flue Gas Multi–Pollutants ControlNorth China Electric Power UniversityBaoding 071003China The Key Laboratory of Water and Sediment Sciences Ministry of EducationCollege of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China China Power Hua Chuang Electricity Technology Research Company Ltd. Suzhou 215123China

Achieving efficient degradation of organic pollutants via activation of sulfite is meaningful but challenging.Herein,we have constructed a heterogeneous catalyst system involving Co_(3)O_(4) and TiO_(2) nanoparticles to form the p-n heterojunction(Co_(3)O_(4)/TiO_(2)) to degrade acetaminophen(ACE) through photocatalytic activation of sulfite.Specifically,X-ray photoelectron spectroscopy analysis and theoretical calculations provide compelling evidence of electron transfer from Co_(3)O_(4) to TiO_(2) at the heterointerface.The interfacial electron redistribution of Co_(3)O_(4)/TiO_(2) tunes the adsorption energy of HSO_(3)^(-)/SO_(3)^(2-) in sulfite activation process for enhanced the catalytic activity.Owing to its unique heterointerface,the degradation efficiency of ACE reached 96.78%within 10 min.The predominant active radicals were identified as ·OH,h^(+),and SO_(x)^(·-) through radical quenching experiments and electron spin resonance capture.Besides,the possible degradation pathway was deduced by monitoring the generated intermediate products.Thereafter,the enhanced roles of well-engineered compositing interface in photocatalytic activation of sulfite for complete degradation of ACE were unveiled that it can improve light absorption ability,facilitate the generation of active species,and optimize reactive pathways.Considering that sulfite is a waste from flue gas desulfurization process,the photocatalytic activation of sulfite system will open up new avenues of beneficial use of air pollutants for the removal of pharmaceutical wastewater.

关键词： Sulfite Photocatalytic activation Charge transfer Heterojunction interface Degradation mechanism

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切换拓扑下多智能体时变编队控制方法

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中国惯性技术学报 2024年第5期32卷 511-520页

作者：庞强伟朱拥勇陈晔李宗吉董理黄成果中国人民解放军92116部队葫芦岛125003 海军工程大学兵器工程学院武汉430000

针对通信存在测量噪声和链路频繁断开下的多智能体时变编队稳定控制问题,基于期望编队状态、智能体自身状态和通信拓扑,提出一种切换拓扑下多智能体时变编队控制方法。首先,通过矩阵替换对系统进行降维处理。然后,应用随机微分方程理论... 详细信息

针对通信存在测量噪声和链路频繁断开下的多智能体时变编队稳定控制问题,基于期望编队状态、智能体自身状态和通信拓扑,提出一种切换拓扑下多智能体时变编队控制方法。首先,通过矩阵替换对系统进行降维处理。然后,应用随机微分方程理论和Lyapunov稳定性定理推导出编队系统在普通切换和随机切换下稳定的充要条件以及编队收敛指标。最后,在四个智能体构成的编队和四个备用拓扑的仿真条件下,验证了所提方法可有效保证多智能编队在切换拓扑下的稳定性。相较于普通切换拓扑,随机切换拓扑能更快地将编队误差收敛至10^(-2)以内,效率提高约34.4%。同时编队收敛指标也证实了这一结论,且编队的精确性以及应用范围也要优于普通切换拓扑。

关键词：智能体编队控制切换拓扑随机微分方程 Lyapunov定理

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Selenium uptake and simultaneous catalysis of sulfite oxidation in ammonia-based desulfurization

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Journal of Environmental Sciences 2021年第5期33卷 207-218页

作者： qiangwei li Yuguo Wang Lei Xing Tieyue Qi lin Zhang Jie liu Shihan Zhang Yongliang Ma lidong Wang Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control Department of Environmental Science and EngineeringNorth China Electric Power UniversityBaoding071003PR China MOE Key Laboratory of Resources and Environmental Systems Optimization North China Electric Power UniversityBeijing102206P.R.China College of Environment Zhejiang University of TechnologyHangzhou 310014China School of Environment Tsinghua UniversityBeijing 100084China

Accelerating the(NH_4)_(2)SO_(3) oxidation gives rise to the reclaiming of byproduct, while there are secondary environmental risks from reduction of the coexisted selenium species by sulfite. In this study, a bi-functional Co-SBA-15-SH, were synthesized through Co impregnation and sulfhydryl(-SH) decoration, which can simultaneously uptake Se and accelerate sulfite oxidation efficiently. Meanwhile, the adsorption kinetics and migration mechanism of Se species were revealed through characterization and density functional calculations, with maximum adsorption capacity of 223 mg/g. The inhibition of Se~0 re-emission and poisonous effect of Se on sulfite oxidation was also investigated. Using the findings of this study, the ammonia desulfurization can be improved by enabling purification of the byproduct and lowering the toxicity of effluent by removing toxic pollutants.

关键词： Selenium Adsorption Re-emission Sulfite oxidation Catalyst

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油浸式变压器在线检测与故障诊断技术研究

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江西煤炭科技 2024年第1期 171-174页

作者：李蔷薇晋城乾泰安全技术有限责任公司山西晋城048006

通过对油浸式变压器故障类型及诊断方法进行详细研究,并结合变压器油色谱分析、局部放电检测及温度检测等技术设计了一套电力变压器监测及故障诊断系统。该系统可实现对油浸式变压器的全方位在线检测及故障报警诊断,同时兼顾检测快速性... 详细信息

通过对油浸式变压器故障类型及诊断方法进行详细研究,并结合变压器油色谱分析、局部放电检测及温度检测等技术设计了一套电力变压器监测及故障诊断系统。该系统可实现对油浸式变压器的全方位在线检测及故障报警诊断,同时兼顾检测快速性及准确性,有效提高油浸式变压器检测的智能化程度。

关键词：油浸式变压器油色谱分析在线检测故障诊断

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20世纪50—70年代诗歌中的干部书写

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东莞理工学院学报 2024年第2期31卷 9-18页

作者：余蔷薇李桂豫武汉大学文学院湖北武汉430072

在20世纪50—70年代的诗歌中,干部成为一个常态化的书写对象。虽然其一般具有同质化的特征,但也根据题材、语境、视角的差异而分化出不同的意义形态。同时,部分带有逾越性的形象既丰富了干部的可能面向,也追问着干部形象在建构过程中存... 详细信息

在20世纪50—70年代的诗歌中,干部成为一个常态化的书写对象。虽然其一般具有同质化的特征,但也根据题材、语境、视角的差异而分化出不同的意义形态。同时,部分带有逾越性的形象既丰富了干部的可能面向,也追问着干部形象在建构过程中存在的问题。在诗歌中,作为知识分子与工农兵关系的中介,干部形象呈现出聚合性、附加性与修辞性,这是其政治诗学路径的症结所在。

关键词： 50—70年代诗歌干部形象工农兵知识分子

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淫羊藿中异戊烯基黄酮的鉴别和含量测定的综合实验设计

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甘肃高师学报 2024年第2期29卷 73-78页

作者：张丽党强维鲁会杰李建龙兰州城市学院化学工程学院甘肃兰州730070

为加深学生对传统中药淫羊藿的药效成分异戊烯基黄酮的认识,设计了综合化学实验.将淫羊藿粉末经乙醇热回流提取,蒸馏浓缩得到总浸膏,再将总浸膏溶于水,依次用石油醚、乙酸乙酯和正丁醇萃取,得到石油醚相、乙酸乙酯相和正丁醇相.将三相... 详细信息

为加深学生对传统中药淫羊藿的药效成分异戊烯基黄酮的认识,设计了综合化学实验.将淫羊藿粉末经乙醇热回流提取,蒸馏浓缩得到总浸膏,再将总浸膏溶于水,依次用石油醚、乙酸乙酯和正丁醇萃取,得到石油醚相、乙酸乙酯相和正丁醇相.将三相的有机物分别用薄层色谱展开,在紫外灯下观察254 nm和365 nm荧光颜色和强度,同时用硫酸、氯化铁显色,表明各相均含有黄酮.以淫羊藿苷为标品,通过作标准曲线结合紫外光谱对其各相的异戊烯基黄酮含量进行平行测定,同时考察了方法的重复性和样品的稳定性.

关键词：淫羊藿异戊烯基黄酮含量测定综合实验

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公安院校智慧交通管理人才培养模式探索——基于“三融合六协同”产学合作

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河北开放大学学报 2024年第2期29卷 54-56页

作者：徐程李强伟付凤杰浙江警察学院浙江杭州310053

浙江警察学院交通管理工程专业作为国家一流本科专业建设点,对智慧交通管理人才的知识、能力、素质培养提出了更高要求。结合新工科、《交通强国建设纲要》以及智能交通系统变革等背景,提出基于“三融合六协同”的人才培养新模式,进一... 详细信息

浙江警察学院交通管理工程专业作为国家一流本科专业建设点,对智慧交通管理人才的知识、能力、素质培养提出了更高要求。结合新工科、《交通强国建设纲要》以及智能交通系统变革等背景,提出基于“三融合六协同”的人才培养新模式,进一步深化推进公安实战化教育改革,培养具有多学科背景的,高层次、复合型、创新类应用警务人才,为公安队伍输送力量。

关键词：产学合作协同创新交通管理工程人才培养模式

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Gut microbiota dysbiosis involves in host non-alcoholic fatty liver disease upon pyrethroid pesticide exposure

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Environmental Science and Ecotechnology 2022年第3期11卷 83-92页

作者： Meng li Tingting liu Teng Yang Jiaping Zhu Yunqian Zhou Mengcen Wang qiangwei Wang Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects Institute of Pesticide and Environmental ToxicologyZhejiang UniversityHangzhou310058China Agricultural Technical Institute The Ohio State UniversityWoosterOH44691USA Global Education Program for AgriScience Frontiers Graduate School of AgricultureHokkaido UniversitySapporo060-8589Japan

A growing body of evidence has demonstrated the significance of the gut microbiota in host health,while the association between gut microbiota dysbiosis and multiple diseases is yet elusive in the scenario of exposure to widely used pesticides.Here,we show that gut microbiota dysbiosis involves in host's abnormal lipid metabolism and consequently the non-alcoholic fatty liver disease in Xenopus laevis upon exposure to cis-bifenthrin,one of the most prevalent pyrethroid insecticides in the world.With the guidance of gut microbiota analysis,we found that cis-bifenthrin exposure significantly perturbed the gut microbial community,and the specific taxa that served as biomarkers were identified.Metabolomics profiling and association analysis further showed that a significant change of intestinal metabolites involved in lipid metabolic pathways were induced along with the microbiota dysbiosis upon exposure to cis-bifenthrin.Detailed investigation showed an altered functional regulation of lipids in the liver after cis-bifenthrin exposure and the accumulation of lipid droplets in hepatocytes.Specifically,a change in deoxycholic acid alters bile acid hepatoenteral circulation,which affects lipid metabolism in the liver and ultimately causes the development of fatty liver disease.Collectively,these findings provide novel insight into the gut microbiota dysbiosis upon pesticide exposure and their potential implication in the development of chronic host diseases related to liver metabolic syndrome.

关键词： Pyrethroid Xenopus laevis Metabolic disorders Dysbiosis gut microbiota

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AraENCODE:A comprehensive epigenomic database of Arabidopsis thaliana

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Molecular Plant 2023年第7期16卷 1113-1116页

作者： Fuming Lai Qiangqiang Fu liang Xie Yaping Fangi qiangwei Zhou Guoliang li National Key Laboratory of Crop Genetic Improvement Hubei Hongshan LaboratoryHuazhong Agricultural University1 Shizishan StreetHongshan DistrictWuhan 430070HubeiChina Agricultural Bioinformatics Key Laboratory of Hubei Province and Hubei Engineering Technology Research Center of Agricultural Big Data 3D Genomics Research CenterHuazhong Agricultural University1 Shizishan StreetHongshan DistrictWuhan 430070HubeiChina

Dear Editor,Arabidopsis thaliana is an important model organism in plant biology and genetics.The genome of Arabidopsis ecotype Columbia-0 has been sequenced and completely annotated(Cheng et al.,2017),which facilitates the genomics research of plants.Over the past two decades,advances in the gene regulation studies have elucidated a spectrum of epigenetic molecular phenomena,including DNA methylation,histone modification,chromatin accessibility,and chromatin interaction,which collectively form an additional layer of information based on DNA sequence(Law and Jacobsen,2010).The epigenome landscape has been characterized in Arabidopsis as more high-throughput analyses were developed(Zhao et al.,2022).Without a doubt,in-depth studies of gene expression regulation heavily rely on such epigenomic information.However,the utilization of this knowledge poses a challenge for certain groups lacking bioinformatics analysts or adequate computing resources.

关键词： Arabidopsis collective doubt

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Enhanced unipolar electrical fatigue resistance and related mechanism in grain-oriented Pb(Mg_(1/3)Nb_(2/3))O_(3)-Pb(Zr,Ti)O_(3)piezoceramics

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Journal of Materials Science & Technology 2023年第14期145卷 40-47页

作者： linjing liu Bin Yang Rui Lv qiangwei Kou Shuai Yang Hang Xie Yuan Sun Yunfei Chang Shan-Tao Zhang Fei li Functional Materials and Acousto-Optic Instruments Institute School of Instrumentation Science and EngineeringHarbin Institute of TechnologyHarbin 150080China Electronic Materials Research Laboratory(Key Lab of Education Ministry) State Key Laboratory for Mechanical Behavior of Materials and School of Electronic Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China National Laboratory of Solid State Microstructures and College of Engineering and Applied Science Nanjing UniversityNanjing 210093China

Piezoceramics with high and fatigue-resisted piezoelectric properties are strongly desired for actuator ap-plications.In this work,textured Pb(Mg_(1/3)Nb_(2/3))O_(3)-Pb(Zr,Ti)O_(3)ceramics with Lotgering factor F_(001)∼98%were fabricated by templated grain growth technique.Strong[001]c-grain orientation(f∼90%and r∼0.22)of the textured ceramics effectively produced about 230%enhanced piezoelectric coefficient d_(33)^(∗)(i.e.,S_(max)/E_(max))and substantially improved unipolar electrical fatigue resistance.Unipolar polarization P max and d_(33)^(∗)of the textured ceramics were nearly maintained up to 106 unipolar cycles,while 19%and 14%degradations were respectively observed from randomly oriented counterparts.Especially,normal-ized d_(33)^(∗)of the textured ceramics shows better unipolar fatigue resistance than those of piezoceramics reported previously.Much lower bipolar strain asymmetryγs(∼4%)was observed from the textured samples fatigued after 106 unipolar cycles as compared toγs∼23%for randomly oriented counterparts.While charged defect accumulation model described the serious fatigue deteriorations in randomly ori-ented ceramics,the current work revealed that substantially enhanced unipolar fatigue resistance of the textured ceramics is mainly associated with the inherent fatigue anisotropy,weakened local bias fields owing to both enhanced domain mobility and lower defect density near grain boundaries/interfaces,and increased intrinsic contribution due to more tetragonal content.These superior characteristics suggest the great potential of textured ceramics for high-performance and robust actuator applications.

关键词： Ceramics Grain orientation Piezoelectric strain Unipolar fatigue Defect accumulation

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