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Flexible, self-cleaning, and high-performance ceramic nanofiber-based moist-electric generator enabled by interfacial engineering

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Science China(Technological Sciences) 2022年第2期65卷 450-457页

作者： WANG LiMing FENG LanLan SUN Zhao Yang HE XinYang WANG RongWu QIN XiaoHong YU JianYong Key Laboratory of Textile Science&Technology Ministry of EducationCollege of TextilesDonghua UniversityShanghai 201620China Innovation Center for Textile Science and Technology Donghua UniversityShanghai 201620China

Due to their long-term stability, even under extreme conditions, oxide ceramics have attracted significant attention in emerging fields like moist-electric generation. However, the inherent brittleness and low voltage output of oxide ceramic-based moistelectric generators(MEGs) limit their applications in wearable electronics. Herein, a facile strategy involving the combination of sol-gel electrospinning and calcination is used to fabricate flexible and freestanding Ti O_(2)/Zr O_(2)(TZ) composite nanofiber-based MEGs. The excellent flexibility of the TZ nanofiber membranes can be attributed to the suppression of their crystal structure transformation, dispersion of stress concentration, and reduction of crack propagation via interfacial engineering. The porous structure of the electrospun nanofiber membrane features an abundance of charged narrow channels for the diffusion of water molecules and generates a streaming potential. The optimal voltage output reached ~0.8 V, which is the highest value reported for an oxide ceramic-based MEG. Furthermore, the as-fabricated nanofiber-based MEG exhibits good self-cleaning capability to degrade organic pollutants under ultraviolet irradiation. By integrating mechanical flexibility, high performance, and a selfcleaning effect, this work presents a new idea for exploring diverse, efficient, and wearable oxide ceramic-based MEGs.

关键词： moist-electric generation ceramic nanofiber electrospinning flexible self-cleaning

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Plasma-activated ethanol solution and it's decontamination effect

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High Voltage 2023年第4期8卷 833-840页

作者： YiQian Li JiaLin Liu feng Zhao Ke Song lanlan Nie DaWei Liu XinPei Lu State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhanHubeiChina Department of Thoracic Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Center of Stomatology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina

Ethanol solution as a disinfectant has been widely used in various fields.However,it has a significant bactericidal capability only when the volume fraction of ethanol is around 70%-75%.For such high concentration of ethanol solution,it has an irritating smell.When it is used for applications such as wound disinfection,it causes a stinging sensation.Low concentrations of ethanol solution are less irritating,but it is also less effective at killing bacteria.In this study,an idea for producing a green,efficient and less irritating disinfectant is proposed.It is based on a plasma-activated low-concentration ethanol solution(PAES).It is found that the plasma-activated 10% volume fraction of ethanol solution can kill more than seven orders of magnitude of Escherichia coli,while the untreated 10% volume fraction of ethanol solution has no bactericidal effect.Besides,the PAES's activity remains unchanged after being stored at -20℃ for three days.Further investigation shows that new compositions including peracetic acid,peroxynitrite,hydrogen peroxide and acetic acid are detected in the PAES,which together are playing the main role of the excellent and prolonged bactericidal effect.

关键词： effect. ethanol unchanged

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H6 Non-isolated Full Bridge Grid-connected PV Inverters With Low Leakage Currents

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中国电机工程学报 2012年第15期32卷 I0001-I0022,21页

作者： ZHANG Li SUN Kai FENG LanLan XING Yan XU Ming Nanjing University of Aeronautics ＆ Astronautics Tsinghua University

为满足非隔离光伏并网发电系统对共模漏电流的限制，提出一种六开关逆变器拓朴（H6拓扑）。所提出的H6拓扑在功率传输模态时，进网电流半个工频周期流过3支开关管，而另半个工频周期流过2支开关管，故相对于H5拓扑，降低了通态损耗，有... 详细信息

为满足非隔离光伏并网发电系统对共模漏电流的限制，提出一种六开关逆变器拓朴（H6拓扑）。所提出的H6拓扑在功率传输模态时，进网电流半个工频周期流过3支开关管，而另半个工频周期流过2支开关管，故相对于H5拓扑，降低了通态损耗，有利于热应力均衡，且仍满足续流阶段光伏电池输出端与电网脱离的要求。详细分析拓扑的工作原理，并推论给出H6非隔离光伏并网逆变器的其它3种拓扑结构；比较分析了H5拓扑、Heric拓扑和H6拓扑的损耗和成本。通过1kW通用样机平台对比验证了上述3种拓扑的效率和共模特性。实验结果表明，H6拓扑的变换效率高于H5拓扑、但略低于Heric拓扑，共模特性优于Heric拓扑、但略劣于H5拓扑。

关键词：全桥逆变器并网逆变器漏电流共模电压光伏发电

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Parvovirus B19 infection and B-cell response pattern in unexplained lymphadenopathy

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Chinese Medical Journal 2023年第18期136卷 2260-2262页

作者： Li Gong Jing Tian lanlan feng Shumei Wang Xiaoyan Liu Gaosheng Huang Wei Zhang Department of Pathology Tangdu HospitalAir Force Medical UniversityXi’anShaanxi 710038China Helmholtz Sina-German Research Laboratory for Cancer Tangdu HospitalAir Force Medical UniversityXi’anShaannxi 710038China Department of Pathology State Key Laboratory of Cancer BiologyXijing HospitalAir Force Medical UniversityXi’anShaanxi 710032China

Lymphadenopathy is defined as lymph nodes(LN)that are abnormal in size or consistency,usually with a diameter>1 cm.Common etiologies include malignancy,infection,autoimmune disorders,and medications.[1]Most patients obtain a definite diagnosis after undergoing a series of examinations.However,the etiology remains unclear in a small number of patients.

关键词： infection diagnosis pattern

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CC@BCN@PANI core-shell nanoarrays as ultra-high cycle stability cathode for Zn-ion hybrid supercapacitors

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能源前沿:英文版 2023年第4期17卷 555-566页

作者： Shixian XIONG Hongcheng KE Lei CAO Yu WANG Qian ZHU Liqin ZHONG lanlan FAN feng GU Nanchang Key Laboratory for Advanced Manufacturing of Electronic Information Materials and Devices/Jiangxi Provincial Key Laboratory for Simulation and Modelling of Particulate Systems International Institute for InnovationJiangxi University of Science and TechnologyNanchang330013China

Exploring cathode materials that combine excellent cycling stability and high energy density poses a challenge to aqueous Zn-ion hybrid supercapacitors(ZHSCs).Herein,polyaniline(PANI)coated boron-carbon-nitrogen(BCN)nanoarray on carbon cloth surface is prepared as advanced cathode materials via simple high-temperature calcination and electrochemical deposition methods.Because of the excellent specific capacity and conductivity of PANI,the CC@BCN@PANI core-shell nanoarrays cathode shows an excellent ion storage capability.Moreover,the 3D nanoarray structure can provide enough space for the volume expansion and contraction of PANI in the charging/discharging cycles,which effectively avoids the collapse of the microstructure and greatly improves the electrochemical stability of PANI.Therefore,the CC@BCN@PANI-based ZHSCs exhibit superior electrochemical performances showing a specific capacity of 145.8 mAh/g,a high energy density of 116.78 Wh/kg,an excellent power density of 12 kW/kg,and a capacity retention rate of 86.2%after 8000 charge/discharge cycles at a current density of 2 A/g.In addition,the flexible ZHSCs(FZHSCs)also show a capacity retention rate of 87.7%at the current density of 2 A/g after 450 cycles.

关键词： CC@BCN@PANI cathode Zn-ion hybrid supercapacitor core-shell nanoarrays high energy density ultra-high cycle stability

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On the chronological understanding of the homogeneous dielectric barrier discharge

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High Voltage 2023年第6期8卷 1132-1150页

作者： Xinpei Lu Zhi Fang Dong Dai Tao Shao feng Liu Cheng Zhang Dawei Liu lanlan Nie Chunqi Jiang State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhanChina College of Electrical Engineering and Control Science Nanjing Tech TechnologyNanjingChina School of Electric Power South China University of TechnologyGuangzhouChina Institute of Electrical Engineering Chinese Academy of SciencesBeijingChina Frank Reidy Research Center for Bioelectrics Old Dominion UniversityNorfolkVirginiaUSA Department of Electrical and Computer Engineering Old Dominion UniversityNorfolkVirginiaUSA

Dielectric barrier discharges(DBD)are widely utilised non‐equilibrium atmospheric pressure plasmas with a diverse range of applications,such as material processing,surface treatment,light sources,pollution control,and medicine.Over the course of several decades,extensive research has been dedicated to the generation of homogeneous DBD(H‐DBD),focussing on understanding the transition from H‐DBD to filamentary DBD and exploring strategies to create and sustain H‐DBD.This paper first discusses the in-fluence of various parameters on DBD,including gas flow,dielectric material,surface conductivity,and mesh electrode.Secondly,a chronological literature review is presented,highlighting the development of H‐DBD and the associated understanding of its un-derlying mechanisms.This encompasses the generation of H‐DBD in helium,nitrogen,and air.Lastly,the paper provides a brief overview of multiple‐current‐pulse(MCP)behaviours in H‐DBD.The objective of this article is to provide a chronological un-derstanding of homogeneous dielectric barrier discharge(DBD).This understanding will aid in the design of new experiments aimed at better comprehending the mechanisms behind H‐DBD generation and ultimately assist in achieving large‐volume H‐DBD in an air environment.

关键词： dielectric barrier pollution

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A Preliminary Study on the Effect Evaluation of Electroacupuncture Combined with Balloon Dilation in the Treatment of Dysphagia after Cerebral Infarction

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Journal of Behavioral and Brain Science 2022年第5期12卷 236-251页

作者： Manping Song lanlan Liu Bowen feng Jingjing Chen Yang Yang Department of Acupuncture and Moxibustion Hainan General Hospital Haikou China Department of Rehabilitation The First Affiliated Hospital of Hainan Medical University Haikou China Department of Rehabilitation Hainan Rehabilitation Hospital Haikou China

Objective: Dysphagia is a frequent symptom caused by cerebral infarction. This study investigated the effect evaluation and safety of electroacupuncture combined with balloon dilatation on dysphagia after cerebral infarction. Methods: Totally 100 patients with dysphagia after cerebral infarction were enrolled as study subjects and assigned into the control group (treated with balloon dilatation) and the observation group (treated with electroacupuncture and balloon dilatation), with 50 cases in each group. The general data of participants were recorded. Before or after treatment, swallowing function was assessed by water swallow test, standardized swallowing function assessment (SSA), videofluoroscopic swallow study (VFSS), and functional oral intake scale (FOIS). The cerebral hemodynamics, serological indicators, neurological impairment, quality of life (QOL) score were analyzed. Additionally, the occurrence of complications and adverse reactions after treatment was assessed. Results: There was no significant difference in gender, age, BMI, course of disease, and grade of dysphagia between the two groups. Balloon dilatation alone and electroacupuncture combined with balloon dilatation decreased the water swallow test, SSA, and VFSS scores, increased FOIS score, and improved the swallowing function, cerebral hemodynamic parameters, serological indicators, neurological function and QOL, with the better efficacy in the combined therapy. Moreover, combined therapy had lower incidences of complications and adverse reactions than balloon dilatation therapy alone. Conclusion: Electroacupuncture intervention combined with balloon dilatation therapy ameliorates swallowing function, cerebral hemodynamics, serological indicators, neurological function and QOL, and reduces complications and adverse reactions in dysphagia after cerebral infarction.

关键词： Electroacupuncture Balloon Dilation Dysphagia Cerebral Infarction Neurological Function Quality of Life Complications Adverse Reactions

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A metabolic intervention strategy to break evolutionary adaptability of tumor for reinforced immunotherapy

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Acta Pharmaceutica Sinica B 2023年第2期13卷 775-786页

作者： Qianhua feng Yutong Hao Shuaiqi Yang Xiaomin Yuan Jing Chen Yuying Mei lanlan Liu Junbiao Chang Zhenzhong Zhang Lei Wang School of Pharmaceutical Sciences Zhengzhou UniversityZhengzhou 450001China Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases Zhengzhou 450001China College of Chemistry Zhengzhou UniversityZhengzhou 450001China Department of Pharmacy The Third Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052China

The typical hallmark of tumor evolution is metabolic dysregulation.In addition to secreting immunoregulatory metabolites,tumor cells and various immune cells display different metabolic pathways and plasticity.Harnessing the metabolic differences to reduce the tumor and immunosuppressive cells while enhancing the activity of positive immunoregulatory cells is a promising strategy.We develop a nanoplatform(CLCeMOF)based on cerium metal-organic framework(CeMOF)by lactate oxidase(LOX)modification and glutaminase inhibitor(CB839)loading.The cascade catalytic reactions induced by CLCeMOF generate reactive oxygen species“storm”to elicit immune responses.Meanwhile,LOX-mediated metabolite lactate exhaustion relieves the immunosuppressive tumor microenvironment,preparing the ground for intracellular regulation.Most noticeably,the immunometabolic checkpoint blockade therapy,as a result of glutamine antagonism,is exploited for overall cell mobilization.It is found that CLCeMOF inhibited glutamine metabolism-dependent cells(tumor cells,immunosuppressive cells,etc.),increased infiltration of dendritic cells,and especially reprogrammed CD8^(+)T lymphocytes with considerable metabolic flexibility toward a highly activated,long-lived,and memory-like phenotype.Such an idea intervenes both metabolite(lactate)and cellular metabolic pathway,which essentially alters overall cell fates toward the desired situation.Collectively,the metabolic intervention strategy is bound to break the evolutionary adaptability of tumors for reinforced immunotherapy.

关键词： Metabolic intervention Immunotherapy Glutamine metabolism Lactate oxidase Reactive oxygen species Cerium metal-organic framework Immunogenic tumor cell death Drug delivery

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5G网络技术在农业智能化管理中的应用

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农机化研究 2022年第9期44卷 260-263页

作者：李兰兰冯江华郑州电力职业技术学院郑州451450

以农业生产过程中智能化管理系统为研究对象,对智能管理系统中数据采集、传输、分析以及控制指令的生成与传输过程进行分析,设计一种通过5G网络技术进行通信的农业智能化管理系统,可有效地进行环境信息采集及传输,并进行环境参数信息的... 详细信息

以农业生产过程中智能化管理系统为研究对象,对智能管理系统中数据采集、传输、分析以及控制指令的生成与传输过程进行分析,设计一种通过5G网络技术进行通信的农业智能化管理系统,可有效地进行环境信息采集及传输,并进行环境参数信息的分析和处理。智能管理系统将数据信息与知识数据进行对比,进行报警提示,并根据数据库信息生成控制指令,数据传输网络进行控制指令的发送,通过驱动控制系统进行区域内机械设备的驱动,使智能系统管理区域内环境信息处于稳定状态。

关键词：农业智能化管理系统 5G网络技术数据采集数据传输

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计算机融合算法下的采摘机器人结构设计

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农机化研究 2022年第9期44卷 138-142页

作者：冯江华李兰兰郑州电力职业技术学院郑州451450

为进一步提高我国采摘机器人的作业效率,以优化结构紧凑性与协调性为切入点,充分应用计算机融合算法理论,针对其关键采摘控制结构展开设计研究。在智能无人采摘作业特点的基础上,结合采摘作业控制原理,建立采摘机器人的作业系统融合算... 详细信息

为进一步提高我国采摘机器人的作业效率,以优化结构紧凑性与协调性为切入点,充分应用计算机融合算法理论,针对其关键采摘控制结构展开设计研究。在智能无人采摘作业特点的基础上,结合采摘作业控制原理,建立采摘机器人的作业系统融合算法处理模型,再进行采摘目标成像部件、采摘机械臂参数、采摘反馈控制结构设计,并进行采摘机器人采摘作业试验。试验结果表明:在一定采摘作业试验条件下,采用计算机融合算法进行整机核心结构优化设计后,采摘系统的平均算法处理精度可达85.66%,且系统运行可靠稳定,各动作部件运动灵活,采摘识别率与采摘成功率均有所提升,采摘果实损伤率可控制在2.49%以下,整机作业效率可达到92.07%,具有较强实用性,可为类似智能无人化采摘农业装备结构设计提供参考。

关键词：采摘机器人融合算法机械臂反馈控制果实损伤率

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