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Peracetic acid catalytic activation using Co3O4 nanocluster decorated graphitic carbon nitride for cefapirin degradation in water

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Science China Technological Sciences 2024年第10期67卷 3103-3115页

作者： YIN ShiMei gao yixuan CHEN Long LI Fan LIU XiaoNa QI Fei LIU Wen Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and EngineeringBeijing Forestry University Key Laboratory of Water and Sediment Sciences (Ministry of Education) College of Environmental Sciences and EngineeringPeking University School of Environmental Science and Engineering Taiyuan University of Technology State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems Peking University Beijing National Laboratory for Molecular Sciences Peking University

This study innovated cobalt-based catalytic nanocomposites（CCNs） for the heterogeneous activation of peracetic acid（PAA）,a green and efficient advanced oxidation process for removing antibiotics from *** Co3O4catalysts exhibit limited activity due to stable electronic *** overcome this,CCNs were synthesized using a one-step condensation method,incorporating a size control strategy that anchors Co3O4nanoclusters within 4-5 nm onto six-fold cavity of g-C3N4,simultaneously modifying the coordination environment of *** alteration significantly enhances the adsorption energy of PAA and catalytic activity compared to commercial *** improved performance of CCN2,in particular,is attributed to a shift in the cobalt d band center towards the Fermi level,facilitating electron delocalization and transfer,enhancing Co-O bonding,and accelerating PAA ***2's superior activity,with a cefapirin（CFP） degradation kinetic rate constant(k1=0.760 min-1)～11 times that of PAA direct oxidation(k1=0.070 min-1) and～5 times that of commercial Co3O4/PAA system(k1=0.164 min-1),is due to its ability to generate dominant reactive species for antibiotic degradation,including alkoxy radicals(CH3C（=O）OO·),high valence metal(CoⅣ（=O）2+),and singlet oxygen（1O2）,with the latter two being crucial for the degradation *** degradation of CFP involved three mechanisms,including direct oxidation by PAA,decarboxylation,and open-ring reactions at nitrogen *** research provides insights into developing high-activity catalysts for efficient PAA activation and antibiotic removal,leveraging the strategy of shifting the transition metal d band center.

关键词： peracetic acid Co3O4 nanocluster high valence metal singlet oxygen cefapirin

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Epidemiological Characteristics of Human Parainfluenza Viruses Infections-China,2019-2023

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China CDC weekly 2024年第12期6卷 235-241,I0003,I0004页

作者： yixuan gao Yingwei Ma Daxing Feng Feng Zhang Biao Wang Xiaoqing Liu Bing Zhu Hui Xie Linqing Zhao Xiaoru Long Ying Chen Bing Wang Jie Jiang Zhen Zhu Yan Zhang Aili Cui Baicheng Xia Naiying Mao National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina Precision Medicine Research Center Children’s Hospital of ChangchunChangchun CityJilin ProvinceChina Henan Provincial Center for Disease Control and Prevention Zhengzhou CityHenan ProvinceChina Laboratory of Viral Diseases Qingdao Municipal Centre for Disease Control and PreventionQingdao CityShandong ProvinceChina Virus Laboratory Gansu Provincial Center for Disease Control and PreventionLanzhou CityGansu ProvinceChina Jiangxi Provincial Center for Disease Control and Prevention Nanchang CityGansu ProvinceChina Virus Laboratory Guangzhou Women and Children’s Medical CenterGuangzhou Medical UniversityGuangzhou CityGuangdong ProvinceChina Institute for Immunization and Prevention Beijing Center for Disease Prevention and ControlAcademy for Preventive MedicineInstitute of Tuberculosis Control Research and PreventionBeijingChina Laboratory of Virology Beijing Key Laboratory of Etiology of Viral Diseases in ChildrenCapital Institute of PediatricsBeijingChina Department of Infection Children’s Hospital of Chongqing Medical UniversityChongqingChina Inner Mongolia Autonomous Region Comprehensive Center for Disease Control and Prevention Hohhot CityInner Mongolia Autonomous RegionChina Shenyang Prefecture Center for Disease Control and Prevention Shenyang CityLiaoning ProvinceChina

Introduction:A retrospective study based on sentinel surveillance was conducted in 10 provinciallevel administrative divisions(PLADs)in China to enhance the understanding of the epidemiological characteristics of human parainfluenza viruses(HPIVs).Methods:From January 2019 to June 2023,respiratory specimens were collected from individuals with acute respiratory infections(ARIs)and screened for four HPIVs serotypes and other common respiratory viruses using multiplex real-time polymerase chain reaction(PCR).This study analyzed the association of HPIVs infections with seasonal patterns,geographical distribution,demographic profiles,clinical features,and co-infection ***:During the study period,a total of 12,866 ARIs were *** overall detection rate of HPIVs was 6.15%,varying from 5.04%in 2022 to 9.70%in *** median age of HPIVs-infected patients was 3 ***2 was more prevalent among individuals aged 5–17 years(42.57%),while HPIV4 was more common in those over 65 years(12.24%).HPIV3(54.16%)and HPIV1(27.18%)were the predominant serotypes,and their prevalence exhibited significant seasonal fluctuations postcoronavirus disease 2019(COVID-19)*** peak of HPIV3 shifted three months later in 2020 compared to 2019 and returned to a summer peak *** peaks of HPIV1 were observed in 2021 following the peak of ***,coinfections were frequent in HPIVs cases(overall rate:22.12%),with human rhinovirus being the most common co-infecting ***:The prevalence of HPIVs in China was predominantly due to HPIV3 and HPIV1,and their seasonal patterns were altered by pandemic ***,continuous surveillance of HPIVs is essential.

关键词： prevalence seasonal Human

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超临界二氧化碳输送管道内腐蚀研究进展

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材料导报 2024年第12期38卷 180-187页

作者：高怡萱潘杰李焰张建李阳中石化石油工程设计有限公司山东东营257000 中国石油大学(华东)材料科学与工程学院山东青岛266580 中国石化碳捕集、利用与封存(CCUS)重点实验室山东东营257000

碳捕集、利用与封存技术(CCUS)是目前实现化石能源低碳化利用和碳中和的关键途径。随着CCUS技术的不断发展,超临界二氧化碳(CO_(2))输送管道的内腐蚀问题势必成为影响输碳管道工程安全运维的痛点之一。管线钢在超临界CO_(2)环境中的腐... 详细信息

碳捕集、利用与封存技术(CCUS)是目前实现化石能源低碳化利用和碳中和的关键途径。随着CCUS技术的不断发展,超临界二氧化碳(CO_(2))输送管道的内腐蚀问题势必成为影响输碳管道工程安全运维的痛点之一。管线钢在超临界CO_(2)环境中的腐蚀行为和机理与传统油气田CO_(2)腐蚀有着较大不同,是一种在全新环境体系下的腐蚀问题。本文以水相介质导致超临界CO_(2)管道内腐蚀这一主要诱因为线索,综述了杂质、温度、压力以及流速等因素对典型管线钢在超临界工况下的CO_(2)内腐蚀行为的影响,尤其针对含水量这一关键因素进行了详述和对比,分析了当前超临界CO_(2)管输过程中仍然存在的腐蚀与防护问题以及挑战,最后对超临界CO_(2)腐蚀问题未来的重点关注方向进行了展望,结论有助于优化未来输碳管道工程设计与制定对应的腐蚀控制方法。

关键词：超临界二氧化碳管线钢腐蚀

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当代中国流行音乐民族化创演的呈现与展望

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交响（西安音乐学院学报） 2024年第2期43卷 137-142页

作者：高艺璇浙江音乐学院浙江杭州313000

流行音乐是受众数量最多、影响力最为广泛的音乐文化类型。自20世纪初传入中国后,其发展虽然多次停滞,然而民族化理念却一直贯穿始终。特别是改革开放至今,诸多创演者更是通过民族化理念的践行,推出了一系列在国内外广受认可的佳作。对... 详细信息

流行音乐是受众数量最多、影响力最为广泛的音乐文化类型。自20世纪初传入中国后,其发展虽然多次停滞,然而民族化理念却一直贯穿始终。特别是改革开放至今,诸多创演者更是通过民族化理念的践行,推出了一系列在国内外广受认可的佳作。对此应对百年来的民族化探索历程进行梳理,这些作品在歌词、旋律、演唱和配器方面的民族化特色和追求,使作品获得了更加广泛的认同,也成为了流行音乐文化发展的重要推动力。展望未来,还需要从坚定民族理念、强化文化认同、完善专业教学和推动海外传播四个方面,守正而创新,让民族化成为中国流行音乐创演的底色,并在世界舞台上散发出更加耀眼的光彩,讲好中国故事,传播中国好声音。

关键词：流行音乐民族化发展历程当代呈现未来思考

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Y_(3)-/X_(3)Y_(4)-THB金属有机网络中本征二维拓扑绝缘体的预测

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Science China Materials 2024年第4期67卷 1202-1208页

作者：殷翼扬高艺璇张礼智张余洋杜世萱 University of Chinese Academy of Sciences and Institute of Physics Chinese Academy of SciencesBeijing 100191China National Center for Nanoscience and Technology Beijing 100191China

本工作利用基于密度泛函理论的高通量计算方法,研究了由金属团簇和四羟基苯(THB)分子形成的232个具有Kagome晶格的有机金属网格.在由THB分子和过渡金属原子三聚体(称为Y_(3)-THB)组成的有机金属网格中,有7种网格结构是本征有机拓扑绝缘... 详细信息

本工作利用基于密度泛函理论的高通量计算方法,研究了由金属团簇和四羟基苯(THB)分子形成的232个具有Kagome晶格的有机金属网格.在由THB分子和过渡金属原子三聚体(称为Y_(3)-THB)组成的有机金属网格中,有7种网格结构是本征有机拓扑绝缘体.进一步引入过渡金属原子(Tl,Pb,Bi)后得到的X_(3)Y_(4)-THB结构中,发现了9个具有较大自旋轨道耦合能隙的本征有机拓扑绝缘体.在这些本征拓扑绝缘体中,α相Pb_(3)Zn_(4)-THB结构是具有拓扑平带的拓扑绝缘体,其非平庸自旋轨道耦合能隙(97.5 meV)几乎是其平带带宽(22.5 meV)的4倍,是实现分数量子霍尔效应的理想平台.该工作为设计具有大能隙的二维有机拓扑绝缘体提供了新的途径.

关键词：过渡金属原子拓扑绝缘体自旋轨道耦合金属网格网格结构金属团簇密度泛函理论羟基苯

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一种数据驱动的卫星健康状态判读模型

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航天器工程 2024年第1期33卷 123-130页

作者：刘传鲁李常亮高伊萱章雷薛彬航天科工空间工程发展有限公司北京100854

针对海量卫星健康管理数据的处理面临参数维度高、冗余参数多、参数间关系难量化、健康状态难以定量判读的问题,文章提出一种结合相关性聚类分析的数据处理机制和多分类器集成的健康状态判读模型。首先通过最大信息系数(MIC)量化参数关... 详细信息

针对海量卫星健康管理数据的处理面临参数维度高、冗余参数多、参数间关系难量化、健康状态难以定量判读的问题,文章提出一种结合相关性聚类分析的数据处理机制和多分类器集成的健康状态判读模型。首先通过最大信息系数(MIC)量化参数关系并提取关键特征,然后应用聚类分析将关键特征参数数据转换成健康状态知识库,最后基于健康知识库集成训练多分类器来实时监测卫星的健康状态。应用某卫星载荷的遥测数据对该模型有效性进行了验证,结果表明:该判读模型经过数据挖掘后的关键关联参数训练,具有较好的卫星异常状态识别能力,其准确度达到了98%,可为在轨卫星健康状态监视手段的选择提供参考。

关键词：最大信息系数特征选择聚类多分类器集成异常检测

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不同药型罩结构对环形EFP成型及侵彻性能影响的数值模拟

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兵器装备工程学报 2024年第10期45卷 83-90,129页

作者：王瑞聪贾鑫黄正祥张涛魏小凯高一轩南京理工大学机械工程学院南京210094

为研究不同药型罩结构对环形EFP成型及侵彻性能的影响,利用LS-DYNA动力学分析软件对环形药型罩进行了数值模拟与对比分析。首先设计了环锥形罩、环半球罩和环亚半球罩3种典型药型罩结构,数值模拟发现环亚半球罩成型的环形EFP成型效果最... 详细信息

为研究不同药型罩结构对环形EFP成型及侵彻性能的影响,利用LS-DYNA动力学分析软件对环形药型罩进行了数值模拟与对比分析。首先设计了环锥形罩、环半球罩和环亚半球罩3种典型药型罩结构,数值模拟发现环亚半球罩成型的环形EFP成型效果最好、侵彻效果最优,但成型过程环形EFP的姿态仍然具有向外偏斜的趋势。进一步采用变壁厚设计思路,对环亚半球罩进行了优化设计,当壁厚偏移量取0.15时,成型的环形EFP不仅具有优良的飞行稳定性,还具有最好的成型和侵彻效果。本研究对于环形药型罩结构设计具有一定的指导意义。

关键词：环形EFP 药型罩侵彻数值模拟

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Quantum anomalous Hall effect in two-dimensional Cu-dicyanobenzene coloring-triangle lattice

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Nano Research 2020年第6期13卷 1571-1575页

作者： yixuan gao Yu-Yang Zhang Jia-Tao Sun Lizhi Zhang Shengbai Zhang Shixuan Du Institute of Physics Chinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China CAS Center for Excellence in Topological Quantum Computation Beijing100190China School of Information and Electronics MIIT Key Laboratory for Low-Dimensional Quantum Structure and DevicesBeijing Institute of TechnologyBeijing100081China Rensselaer Polytechnic Institute TroyNew York12180USA Songshan Lake Materials Laboratory Dongguan523808China

Metrics details Abstract Magnetic two-dimensional(2D)topological insulators with spontaneous magnetization have been predicted to host quantum anomalous Hall effects(QAHEs).For organic topological insulators,the QAHE only exists in honeycomb or Kagome organometallic lattices based on theoretical ***,coloring-triangle(CT)lattice has been found to be mathematically equivalent to a Kagome lattice,suggesting a potential 2D lattice to realize ***,based on first-principles calculations,we predict an organometallic CT lattice,Cu-dicyanobenzene(DCB),to be a stable QAH *** exhibits ferromagnetic(FM)properties as a result of the charge transfer from metal atoms to DCB ***,based on the Ising model,the Curie temperature of the FM ordering is calculated to be around 100 *** the Chern numbers and the chiral edge states of the semi-infinite Cu-DCB edge structure,which occur inside the spin-orbit coupling band gap,confirm its nontrivial topological *** make the Cu-DCB CT lattice an ideal candidate to enrich the family of QAH insulators.

关键词： quantum anomalous Hall effect organic topological insulators coloring-triangle lattice Kagome lattice

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Weak-reduction graphene oxide membrane for improving water purification performance

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Journal of Materials Science & Technology 2020年第4期39卷 106-112页

作者： Hao Yu Yi He Guoqing Xiao Yi Fan Jing Ma yixuan gao Ruitong Hou Jingyu Chen State Key Laboratory of Oil&Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500China College of Chemistry and Chemical Engineering Southwest Petroleum UniversityChengdu610500China Chengdu Graphene Application Institute of Industrial Technology Chengdu611130China Deakin University Institute for Frontier MaterialsVIC 3220Australia

Two-dimensional(2 D) materials are promising candidates for advanced water purification *** this work, UV reduced GO(Ur GO) membranes on the support of polyvinylidene fluoride(PVDF) had been fabricated for wastewater treatment. The reduction degree of GO membrane on the effect of water purification performance was investigated, and it was found that the weak-reduction GO membrane exhibited the optimal performance of removing pollutant from wastewater than GO membrane. Besides,scanning electron microscopy, X-ray photoelectron spectroscopy, Raman spectra and contact angle tests were used to characterize the physical and chemical properties of the Ur GO membranes, and the permeance and rejection ability of the as-prepared filtration membranes were determined. Due to the weak-reduction of GO, pristine graphitic sp2 domains increased with slightly decreasing D-spacing. Thus,the Ur GO membrane showed a higher water flux of 38.27 L m-2h-1 bar-1, which was improved more than 270% compared to GO membrane, and dyes rejection increased. Those outstanding performances indicated that the Ur GO membrane could effectively regulate the contradiction of the trade-off balance between flux and rejection, and hold great potential in real-world waste-water purification.

关键词： Graphene oxide Membrane UV irradiation Weak-reduction Purification

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Peptide-assembled siRNA nanomicelles confine MnOx-loaded silicages for synergistic chemical and gene-regulated cancer therapy

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Chinese Chemical Letters 2023年第4期34卷 453-458页

作者： Jingjing Li Juanjuan Wei yixuan gao Qi Zhao Jianghui Sun Jin Ouyang Na Na Key Laboratory of Radiopharmaceuticals Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100085China

Chemodynamic therapy(CDT) is a promising therapeutic approach for in situ cancer treatment, but it is still hindered by inefficient single-modality treatment and the weak targeted delivery of reagents into mitochondria(the main site of intracellular ROS production). Herein, to obtain a multimodal strategy,peptide-assembled si RNA nanomicelles were prepared to confine ultrasmall MnOxin small silica cages(silicages), which is convenient for synergistic chemical and gene-regulated cancer therapy. Given the free energy and versatility of small silicages, as well as the excellent Fenton-like activity of ultrasmall MnOx,MnOx-inside-loaded silicages(10 nm) were prepared for CDT delivery to mitochondria. Subsequently, to obtain a synergistic CDT and gene silencing treatment, the peptide-mediated assembly of si RNA and MnOx-loaded silicages were employed to obtain silicage@MnOx-si RNA nanomicelles(SMS NMs). After multiple modifications, sequential cancer cell-targeted delivery, GSH-controlled reagent release of si RNA and mitochondria-targeted delivery of MnOx-loaded silicages were successfully achieved. Finally, by both in vitro and in vivo experiments, SMS NMs were confirmed to be effective for synergistic chemical and gene-regulated cancer therapy. Our findings expand the applications of silicages and initiate the development of multimodal CDT.

关键词： Peptide-assembled siRNA nanomicelles MnOx-loaded silicages GSH-stimulated release Mitochondria-targeted delivery Cancer therap

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