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基于安全态度中介效应的矿工安全认知影响机制研究

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煤矿安全 2024年第7期55卷 245-250页

作者：李红霞郑昕尧田水承任治鹏西安科技大学安全科学与工程学院陕西西安710054 西安科技大学安全与应急管理研究所陕西西安710054 西安科技大学管理学院陕西西安710054

为明确煤矿工人安全认知影响因素及其作用机制,减少不安全行为和事故的发生;以安全态度为中介,提出安全认知、安全态度、安全认知影响因素3个方面的关系假设,运用AMOS软件构建结构方程模型。研究结果表明:4个安全认知影响因素均对矿工... 详细信息

为明确煤矿工人安全认知影响因素及其作用机制,减少不安全行为和事故的发生;以安全态度为中介,提出安全认知、安全态度、安全认知影响因素3个方面的关系假设,运用AMOS软件构建结构方程模型。研究结果表明:4个安全认知影响因素均对矿工的安全认知有正向显著影响,其中企业安全管理制度影响最大;企业安全教育培训和企业安全氛围通过安全态度间接影响安全认知;企业安全管理制度和管理者的安全支持,一方面直接影响安全认知,另一方面通过影响个体的安全态度间接影响安全认知。

关键词：安全管理不安全行为煤矿工人安全认知安全氛围安全态度结构方程模型

Plasma-processed homogeneous magnesium hydride/ carbon nanocomposites for highly stable lithium storage

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Nano Research 2018年第5期11卷 2724-2732页

作者： Xinghua Chang xinyao zheng Yanru Guo Jun Chen Jie zheng Xingguo Li Beijing National Laboratory for Molecular Sciences (BNLMS) College of Chemistry and Molecular Engineering Peking University Beijing 100871 China Academy for Advanced and Interdisciplinary Studies Peking University Beijing 100871 China

Magnesium hydride （MgH2） is a high-capacity anode material for lithium ion batteries, which suffers from poor cycling stability. In this stud）~ we describe a thermal plasma-based approach to prepare homogeneous MgH2/C nanocomposites with very high cycling stability. In this process, magnesium evaporation is coupled with carbon generation from the plasma decomposition of acetylene, leading to a homogeneous Mg/C nanocomposite, which can be easily converted to MgH2/C by hydrogenation. The MgH2/C nanocomposite achieves a high reversible capacity of up to 620 mAh·g^-1 after 1,000 cycles with an ultralow decay rate of only 0.0036% per cycle, which represents a significantly improved performance compared to previous results.

关键词： magnesium hydride anode lithium-ion batteries thermal plasma nanocomposite

Ultrafine Sn nanocrystals in a hierarchically porous N-doped carbon for lithium ion batteries

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Nano Research 2017年第6期10卷 1950-1958页

作者： Xinghua Chang Teng Wang Zhiliang Liu xinyao zheng Jie zheng Xingguo Li Beijing National Laboratory for Molecular Sciences (BNLMS) College of Chemistry and Molecular Engineering Peking University Beijing 100871 China Academy for Advanced Interdisciplinary Studies Peking University Beijing 100871 China

We report a simple method of preparing a high performance, Sn-based anode material for lithium ion batteries （LIBs）. Adding H2O2 to an aqueous solution containing Sn2＋ and aniline results in simultaneous polymerization of aniline and oxidation of Sn2＋ to SnO2, leading to a homogeneous composite of polyaniline and SnO2. Hydrogen thermal reduction of the above composite yields N-doped carbon with hierarchical porosity and homogeneously distributed, ultrafine Sn particles. The nanocomposite exhibits excellent performance as an anode material for lithium ion batteries, showing a high reversible specific capacity of 788 mAh·g^-1 at a current density of 100 mA·g^-1 after 300 cycles and very good stability up to 5,000 mA·g^-1. The simple preparation method combined with the good electro- chemical performance is highly promising to promote the application of Sn based anode materials.

关键词： Sn polyaniline nanocomposite lithium ion battery (LIB)

New approaches for rare earth-magnesium based hydrogen storage alloys

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Progress in Natural Science:Materials International 2017年第1期27卷 50-57页

作者： Huaiwei Zhang xinyao zheng Xiao Tian Yang Liu Xingguo Li College of Chemistry and Molecular Engineering Peking University College of physics and electronic information Inner Mongolia Normal University Department of Food Science Beijing Union University

As the most possibility applied to the next generation negative electrode materials of Ni/ MH second battery,rare earth(RE)-magnesium(Mg) based alloys have been developed over the last few years. Recent advances about the RE-Mg based intermetallic compounds on the crystal structures, hydrogenation behaviors and electrochemical performances are reviewed in the paper. On the other hand, new results about the preparation and modification methods of the alloys are also covered in details.

关键词： Hydrogen storage Rare earth Ni/ MH battery Crystal structures Electrochemical performance

荧光免疫层析法结合智能手机在食品危害物质快速检测中的研究进展

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食品科学 2024年第19期45卷 376-383页

作者：郑欣瑶沈央红赵秀玲陈绅费建枫朱军莉浙江工商大学食品与生物工程学院浙江省食品安全重点实验室浙江杭州310018 宁波检验检疫科学技术研究院浙江宁波315100 杭州纽太斯特生物技术有限公司浙江杭州310000

免疫层析法因其经济、简便、灵敏、特异等优点,被广泛应用于多个领域的快速检测。相对于胶体金纳米颗粒在定量和抗干扰上的局限,荧光纳米材料因优异光学性能已成为免疫层析法中重要的信号标签。本文简要综述了量子点、上转换纳米粒子、... 详细信息

免疫层析法因其经济、简便、灵敏、特异等优点,被广泛应用于多个领域的快速检测。相对于胶体金纳米颗粒在定量和抗干扰上的局限,荧光纳米材料因优异光学性能已成为免疫层析法中重要的信号标签。本文简要综述了量子点、上转换纳米粒子、时间分辨荧光微球、持续发光纳米粒子等荧光纳米标签的制备和性能,重点介绍荧光免疫层析法应用于食源性致病菌、真菌毒素、农药兽药、抗生素、激素和内分泌干扰物、重金属等食品危害物中的检测与分析,阐述荧光免疫层析法与智能手机的联合使用,可为食品安全检测和现场实时监测提供参考。

关键词：免疫层析荧光纳米材料危害物智能手机

Nanodrug enhances post-ablation immunotherapy of hepatocellular carcinoma via promoting dendritic cell maturation and antigen presentation

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Bioactive Materials 2023年第3期21卷 57-68页

作者： Zecong Xiao Tan Li xinyao zheng Liteng Lin Xiaobin Wang Bo Li Jingjun Huang Yong Wang Xintao Shuai Kangshun Zhu Department of Minimally Invasive Interventional Radiology And Laboratory of Interventional RadiologyThe Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou510260China Nanomedicine Research Center The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou510630China College of Chemistry and Materials Science Jinan UniversityGuangzhou510632China Department of Dermatology The Nanfang Hospital of Southern Medical UniversityGuangzhouGuangdong510515China

Thermal ablation(TA)as an effective method treating hepatocellular carcinoma(HCC)in clinics is facing great challenges of high recurrence and *** immune-checkpoint blockade(ICB)-based immuno-therapy has shown potential to inhibit recurrence and metastasis,the combination strategy of ICB and thermal ablation has shown little progress in HCC *** tremendous hurdle for combining ICB with thermal ablation lies with the insufficient antigen internalization and immaturity of tumor-infiltrating dendritic cells(TIDCs)which leads to an inferior immune response to distant tumor growth and ***,an antigen-capturing nanoplatform,whose surface was modified with mannose as a targeting ligand,was constructed for co-delivering tumor-associated antigens(TAAs)and m6A demethylases inhibitor(i.e.,fat mass and obesity asso-ciated gene(FTO)inhibitor)into *** vivo results demonstrate that the intratumoral injection of nanodrug followed by HCC thermal ablation promotes dendritic cells(DCs)maturation,improves tumor infiltration of effector T cells and generates immune memory,which synergize with ICB treatment to inhibit the distant tumor growth and lung ***,the antigen-capturing and FTO-inhibiting nanodrug holds potential to boost the ICB-based immunotherapy against HCC after thermal ablation.

关键词： Thermal ablation Tumor-infiltrating dendritic cells N6-methyladenosine modification Nanoplatform Tumor immunotherapy

Effect of bubble morphology and behavior on power consumption in non-Newtonian fluids’aeration process

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Chinese Journal of Chemical Engineering 2024年第1期65卷 243-254页

作者： Xiemin Liu Jing Wan Jinnan Sun Lin Zhang Feng Zhang Zhibing Zhang xinyao Li zheng Zhou Key Laboratory of Mesoscopic Chemistry of Ministry of Education(MOE) School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Dalian Research Institute of Petroleum and Petrochemicals SINOPECDalian 116045China

Due to a prolonged operation time and low mass transfer efficiency, the primary challenge in the aeration process of non-Newtonian fluids is the high energy consumption, which is closely related to the form and rate of impeller, ventilation, rheological properties and bubble morphology in the reactor. In this perspective, through optimal computational fluid dynamics models and experiments, the relationship between power consumption, volumetric mass transfer rate(kLa) and initial bubble size(d0) was constructed to establish an efficient operation mode for the aeration process of non-Newtonian fluids. It was found that reducing the d0could significantly increase the oxygen mass transfer rate, resulting in an obvious decrease in the ventilation volume and impeller speed. When d0was regulated within 2-5 mm,an optimal kLa could be achieved, and 21% of power consumption could be saved, compared to the case of bubbles with a diameter of 10 mm.

关键词： Non-Newtonian fluids aeration process Power consumption Volumetric mass transfer rate Bubble size

基于燃氢燃气轮机的风光火储多能互补优化调度

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电网技术 2022年第8期46卷 3007-3016页

作者：林俐郑馨姚周龙文新能源电力系统国家重点实验室(华北电力大学) 北京市昌平区102206

由于燃氢燃气轮机的技术成熟、调节能力强,可将电–氢储–电互补系统转变为电–氢储–电/热互补系统,拓宽多能互补的途径,建立基于燃氢燃气轮机的氢储能单元(hydrogen energy storage unit,HESU),进而构建一个电–热–氢多能互补系统(el... 详细信息

由于燃氢燃气轮机的技术成熟、调节能力强,可将电–氢储–电互补系统转变为电–氢储–电/热互补系统,拓宽多能互补的途径,建立基于燃氢燃气轮机的氢储能单元(hydrogen energy storage unit,HESU),进而构建一个电–热–氢多能互补系统(electricity-heat-hydrogen complementary system,EHHCS)。从可再生能源电解水制氢、储氢技术、燃氢燃气轮机技术3个方面探讨了系统互补优化运行机理并建模;计及HESU多能转换效率,建立了以系统电热运行成本最低、最大化消纳弃风为目标的含EHHCS的优化调度模型,并通过仿真验证了其有效性。结果表明,采用燃氢燃气轮机作为HESU的发电环节是一种可行方案,HESU的电能利用效率约为75%,达到了抽蓄的能效水平,具有实用价值。研究结果可为含储能单元的多能互补优化调度提供参考。

关键词：氢储能燃氢燃气轮机多能互补优化调度系统调峰新能源消纳

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拍卖市场缺范呼唤社会诚信

探索与争鸣 2005年第6期 36-38页

作者：郑鑫尧上海立信会计学院图书馆

拍卖交易方式是市场经济的产物,市场经济是信用经济,不守信用就会失去市场。近年来,一些地方政府借助行政权力介入拍卖行业与民争利,以“经营城市”名义拍卖各种公共资源;权利经济的横行和管理上的越位引发了政府的诚信危机。政府的诚... 详细信息

拍卖交易方式是市场经济的产物,市场经济是信用经济,不守信用就会失去市场。近年来,一些地方政府借助行政权力介入拍卖行业与民争利,以“经营城市”名义拍卖各种公共资源;权利经济的横行和管理上的越位引发了政府的诚信危机。政府的诚信是社会诚信的关键,拍卖市场缺范呼唤创建一个良好的信用体系,提供一个公平交易的市场环境。

关键词：社会诚信拍卖市场呼唤 “经营城市” 市场经济信用经济交易方式拍卖行业行政权力地方政府公共资源诚信危机权利经济市场环境公平交易信用体系管理