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Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction:Efficient photodegradation of organic pollutant and toxicity evaluation

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Journal of Materials Science & Technology 2024年第3期170卷 200-211页

作者： Yanyan Zhao Xu Fan Hongxing Zheng Enzhou Liu Jun Fan xuejun wang College of Biology Pharmacy and Food Engineering Shangluo UniversityShangluo 726000China QinLing-Bashan Mountains Bioresources Comprehensive Development C.I.C. Shaanxi University of TechnologyHanzhong 723001China School of Chemical Engineering Northwest UniversityXi’an 710069China

Constructing of heterojunction was identified as a feasible way to improve photocatalytic activity of *** this work,a n-p type Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction was successfully prepared for organic pollutants *** Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction exhibited much higher pho-tocatalytic activity towards Rhodamine B(92.24%,expose to visible light for 60 min),norfloxacin(81.73%,expose to visible light for 90 min)and levofloxacin(87.46%,expose to visible light for 90 min)than pure Bi_(2)WO_(6)and pure AgInS_(2).Toxicity analysis indicated the low environmental toxicity of Rhodamine B degradation intermediates for Rye seeds and Sudangrass seeds germination and *** study displayed that AgInS_(2)and Bi_(2)WO_(6)work as the primary photocatalyst to form·O_(2)−and ·OH,*** improved photocatalytic activity of the Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction was due to the im-proved light response range and intensified carrier separation ***,a S-scheme charge transfer mechanism including multiple charge transfer channels was *** work could provide an effective strategy for organic pollutants degradation in wastewater.

关键词： Photocatalysis S-scheme heterojunction AgInS_(2) Bi_(2)WO_(6) Toxicity experiments

Recent progress on rapid diagnosis of COVID-19 by point-of-care testing platforms

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Chinese Chemical Letters 2024年第3期35卷 66-75页

作者： Ya-Nan Tang Dingding Jiang xuejun wang Yunqi Liu Dacheng Wei State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200433China Institute of Molecular Materials and Devices Fudan UniversityShanghai 200433China

The outbreak of COVID-19 has drawn great attention around the ***-CoV-2 is a highly infectious virus with occult transmission by many mutations and a long incubation *** particular,the emergence of asymptomatic infections has made the epidemic even more ***,early diagnosis and timely management of suspected cases are essential measures to control the spread of the *** simple,portable,and accurate diagnostic techniques for SARS-CoV-2 is the key to epidemic *** advantages of point-of-care testing technology make it play an increasingly important role in viral detection and *** review summarizes the point-of-care testing platforms developed by nucleic acid detection,immunological detection,and nanomaterial-based biosensors ***,this paper provides a prospect for designing future highly accurate,cheap,and convenient SARS-CoV-2 diagnostic technology.

关键词： COVID-19 Point-of-care testing platforms Nucleic acid detection Asymptomatic infection Biosensors

Analysis of mesoscopic mechanical dynamic characteristics of ballast bed with under sleeper pads

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Railway Engineering Science 2024年第1期32卷 107-123页

作者： Xiong Yang Liuyang Yu xuejun wang Zhigang Xu Yu Deng Houxu Li Faculty of Mechanical and Electrical Engineering Kunming University of Science and TechnologyKunmingChina Yunnan Provincial Key Laboratory of Advanced Equipment Intelligent Manufacturing Technology KunmingChina

The meso-dynamical behaviour of a high-speed rail ballast bed with under sleeper pads(USPs)was *** geometrically irregular refined discrete element model of the ballast particles was constructed using 3D scanning techniques,and the 3D dynamic model of the rail-sleeper-ballast bed was constructed using the coupled discrete element method-multiflexible-body dynamics(DEM-MFBD)*** analyse the meso-mechanical dynamics of the ballast bed with USPs under dynamic load on a train and verify the correctness of the model in laboratory *** is shown that the deformation of the USPs increases the contact area between the sleeper and the ballast particles,and subsequently the number of contacts between *** the depth of the granular ballast bed increases,the contact area becomes larger,and the contact force between the ballast particles gradually *** the action of the elastic USPs,the contact forces between ballast particles are reduced and the overall vibration level of the ballast bed can be *** settlement of the granular ballast bed occurs mainly at the shallow position of the sleeper bottom,and the installation of the elastic USPs can be effective in reducing the stress on the ballast particles and the settlement of the ballast bed.

关键词： Under sleeper pads Ballast bed Discrete element method Mesoscopic mechanical dynamic characteristics

Rodent Ecology and Etiological Investigation in China:Results from Vector Biology Surveillance—Shandong Province,China,2012–2022

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China CDC weekly 2024年第36期6卷 911-917,I0001-I0003页

作者： Qintong Sun Yan Liu Yingnan Han Wenjie Liu Xinyue Cao Binghui Li xuejun wang Institute of Disinfection&Disease Vector Control Shandong Center for Disease Control and PreventionShandong Academy of Preventive MedicineJinan CityShandong ProvinceChina Institute of Disinfection and Vector Control Qingdao Center for Disease Control and PreventionQingdao Institute of Preventive MedicineQingdao CityShandong ProvinceChina.

Introduction:Rodents are hosts of a wide range of zoonotic disease pathogens which threaten human ***,comprehensive investigations of rodent ecology and etiology in Shandong are ***,we aimed to analyze rodent ecology and infection with relevant pathogens in Shandong Province,***:Rodent survey data collected from 2012 to 2022 in Shandong Province were used in this *** captured from 2020 to 2022 were identified to species and tested for ***:From 2012 to 2022,4,145 rodents were captured,with an average capture rate of 0.70%.High capture rates were observed in rural residential areas and other habitats,such as farmland and *** norvegicus(***)was the dominant species,followed by Mus musculus(***).The regions with the highest capture rates of *** were Dongying(0.82%)and Heze(0.63%),while *** was more prevalent in Dongying(0.81%)and Weihai(0.56%).Rodent capture rates were highest between March and *** positive detection rates of Hantavirus(HV),Leptospira interrogans(***),Rickettsia typhi(***),Anaplasma phagocytophilum(***),and Francisella tularensis(***)in rodents were 2.58%,1.10%,0.94%,0.16%,and 0.19%,***:The rodent capture rate in human habitation environments has trended downward in Shandong Province,with *** and *** being the dominant *** infection risk from HV,***,and *** showed seasonal *** rodent surveillance and maintaining a low capture rate of host animals could be pivotal for preventing and controlling relevant rodent-borne diseases in high-risk areas.

关键词： Shandong farmland habitat

王学军、刘亚星:毛泽东对中国社会主义现代化建设事业开创性探索的基本特点

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政治经济学研究 2024年第2期 152-153页

作者：王学军刘亚星不详

第一,坚持社会主义方向的现代化。必须坚持社会主义方向。从巩固社会主义经济基础角度,毛泽东同志高度重视发展公有经济,特别是农村集体经济。只有联合起来,向社会主义大道前进,才能达到目的。必须防止、防范“和平演变”。

关键词：公有经济社会主义经济基础王学军农村集体经济和平演变社会主义现代化建设事业毛泽东现代化

发展新质生产力的政府作用:内在逻辑与实践进路

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行政论坛 2024年第3期31卷 76-83页

作者：王学军兰州大学管理学院甘肃兰州730000 兰州大学中国政府绩效管理研究中心甘肃兰州730000

作为上层建筑重要组成部分的政府是推动新质生产力发展的关键主体。在加快发展新质生产力的现实要求下,更好发挥政府作用以推动新质生产力发展已成为理论研究和实践探索的重要议题。制度优势、交易成本、要素驱动和价值协同等逻辑,共同... 详细信息

作为上层建筑重要组成部分的政府是推动新质生产力发展的关键主体。在加快发展新质生产力的现实要求下,更好发挥政府作用以推动新质生产力发展已成为理论研究和实践探索的重要议题。制度优势、交易成本、要素驱动和价值协同等逻辑,共同构成理解政府促进新质生产力发展的内在逻辑。推动新质生产力发展,政府须发挥好关键推动者、市场监管者和风险承担者等角色作用,以加强顶层设计、深化数字治理、突出政策牵引和优化职责体系为着力点。

关键词：政府作用新质生产力政府职责

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公共价值研究的自主知识体系构建

上海交通大学学报（哲学社会科学版） 2024年第3期32卷 70-81页

作者：王学军兰州大学管理学院兰州730000 兰州大学中国政府绩效管理研究中心兰州730000

公共价值是公共行政领域的基础问题,其决定了公共治理的目标追求和实现方式。近年来,公共价值成为公共管理领域的一个重要研究议题,我国学者围绕公共价值概念,从政府绩效管理、价值创造和公共价值观等方面进行了拓展,逐步形成了中国情... 详细信息

公共价值是公共行政领域的基础问题,其决定了公共治理的目标追求和实现方式。近年来,公共价值成为公共管理领域的一个重要研究议题,我国学者围绕公共价值概念,从政府绩效管理、价值创造和公共价值观等方面进行了拓展,逐步形成了中国情境下公共价值研究的理论和方法。回顾公共价值研究,在概念界定、测量以及实证等方面还存在不少的困难,也导致公共价值研究的趋同性比较强,相对知识贡献不足。公共价值的基本问题属性以及公共价值的中国情境和本土特征决定了其作为建构公共管理自主知识体系切口的可能性,关键议题包括公共价值在公共行政中的功能定位、公共价值的文化和政治属性、公共价值的历时变迁和演化、公共价值的建构逻辑和管理以及公共价值实现的激励与问责等。

关键词：公共价值自主知识体系中国情境

基于改进内切圆法的离散道砟颗粒建模对二维道砟休止角和道床沉降的影响研究

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昆明理工大学学报（自然科学版） 2024年第3期49卷 116-126页

作者：王学军邓宇昆明理工大学机电工程学院云南昆明650500

对采用圆盘相切组合建模的方法进行改进,基于真实道砟颗粒二维轮廓,采用分区最大内切圆法建立道砟颗粒离散元内切模型,在内切模型轮廓边缘采用致密小圆盘填充,建立了轮廓精细化模型,并利用同一轮廓采用最密六边形法建立了填充模型;开展... 详细信息

对采用圆盘相切组合建模的方法进行改进,基于真实道砟颗粒二维轮廓,采用分区最大内切圆法建立道砟颗粒离散元内切模型,在内切模型轮廓边缘采用致密小圆盘填充,建立了轮廓精细化模型,并利用同一轮廓采用最密六边形法建立了填充模型;开展道砟颗粒空心圆柱提升的休止角试验,验证模型的正确性并获得模型主要的离散元参数;在此基础上,利用该3种模型在同一道床中填充,进行数值模拟试验,对轨枕施加荷载幅值为5~30 kN,加载频率为5 Hz的余弦荷载,并对道床的宏细观力学特性进行分析.结果表明:轮廓精细化模型保证圆盘之间相切的同时使圆盘为分区最大圆,计算成本低且精细化程度高,并能够更好地模拟颗粒破损;颗粒的形状与摩擦系数对休止角变化较为敏感,精细化建立的模型颗粒堆积成桩性好;道砟颗粒建模的精细化程度对道床性能影响大,轮廓精细化模型与填充模型在休止角试验与道床试验中力学性能相似,前者计算成本低,在二维离散元道床模型中有较好的应用前景.

关键词：最大内切圆轮廓精细化计算成本休止角道床性能

政府职责体系的绩效生成:兼论“高效办成一件事”的绩效治理

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中国行政管理 2024年第2期40卷 22-33页

作者：王学军于均环兰州大学管理学院兰州730000 兰州大学管理学院中国政府绩效管理研究中心

政府职责体系是政府履责的基本载体,也是推动治理体系和治理能力现代化的基础抓手。改革开放以来,我国推动政府职责体系由建立、健全走向优化,本文构建了理解政府职责体系绩效生成的理论机理,在此基础上系统考察政府职责体系的绩效生成... 详细信息

政府职责体系是政府履责的基本载体,也是推动治理体系和治理能力现代化的基础抓手。改革开放以来,我国推动政府职责体系由建立、健全走向优化,本文构建了理解政府职责体系绩效生成的理论机理,在此基础上系统考察政府职责体系的绩效生成策略和价值实现逻辑。研究发现,结构调适和过程优化是政府职责体系绩效生成的主要手段,不同阶段情境系统及社会价值偏好的变化会引起政府职责体系价值导向的迭代,进而决定了其变革方向和策略选择。在公共价值视域下,政府职责体系的价值实现是政治、治理和技术三重逻辑共同作用的结果。“高效办成一件事”是政府职责体系优化的绩效体现。本文以职责体系的绩效生成研究为借鉴,为推动“高效办成一件事”的绩效治理提供了经验与启示。

关键词：政府职责体系结构调适过程优化公共价值