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Intensifying electrified flow-through water treatment technologies via local environment modification

Frontiers of Environmental Science & Engineering 2024年第6期18卷 17-25页

作者： Zheng-Yang Huo xiaoxiong wang Xia Huang Menachem Elimelech School of Environment and Natural Resources Institute of Ecological CivilizationRenmin University of ChinaBeijing 100872China Institute for Ocean Engineering Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Center of Double Helix Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Department of Chemical and Environmental Engineering Yale UniversityNew HavenCT 06520-8286USA

Removing high-risk and persistent contaminants from water is challenging,because they typically exist at low concentrations in complex water *** flow-through technologies are viable to overcome the limitations induced by mass transport for efficient contaminant *** the local environment of the flow-through electrodes offers opportunities to further improve the reaction kinetics and selectivity for achieving near-complete removal of these contaminants from ***,we present state-of-the-art local environment modification approaches that can be incorporated into electrified flow-through technologies to intensify water *** first show methods of nanospace incorporation,local geometry adjustment,and microporous structure optimization that can induce spatial confinement,enhanced local electric field,and microperiodic vortex,respectively,for local environment *** then discuss why local environment modification can complement the flow-through electrodes for improving the reaction rate and ***,we outline appropriate scenarios of intensifying electrified flow-through technologies through local environment modification for fit-for-purpose water treatment applications.

关键词： Point-of-use water treatment Electrified membrane Advection-enhanced mass transport Water decontamination and disinfection Emerging contaminants

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Application of different fiber structures and arrangements by electrospinning in triboelectric nanogenerators

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Chinese Journal of Chemical Engineering 2024年第5期69卷 177-191页

作者： Hebin Li Zifei Meng Dehua wang Ye Lu Longlong Jiang Le Zhang Hanbin wang xiaoxiong wang College of Physics Qingdao UniversityQingdao 266071China School of Physics and Electronic Engineering Jiangsu Normal UniversityXuzhouJiangsu 221000China Microsystem&Terahertz Research Center China Academy of Engineering Physics(CAEP)Chengdu 610200China Institute of Electronic Engineering China Academy of Engineering Physics(CAEP)Mianyang 621900China University-Industry Joint Center for Ocean Observation and Broadband Communication College of PhysicsQingdao UniversityQingdao 266071China Weihai Innovation Research Institute of Qingdao University Weihai 264200China Collaborative Innovation Center for Eco-Textiles of Shandong Province and State Key Laboratory of Bio-Fibers and Eco-TextilesQingdao UniversityQingdao 266071China

In recent years,nanogenerators(NGs)have attracted wide attention in the energy field,among which triboelectric nanogenerators(TENGs)have shown superior *** reports of electrospinning(ES)-based TENGs have been reported,but there is a lack of deep analysis of the designing method from microstructure,limiting the creative of new ES-based *** TENGs use polymer materials to achieve corresponding design,which requires structural design of polymer *** existing polymer molding design methods include macroscopic molding methods,such as injection,compression,extrusion,calendering,etc.,combined with liquid-solid changes such as soluting and melting;it also includes micro-nano molding technology,such as melt-blown method,coagulation bath method,ES method,and nanoimprint *** fact,ES technology has good controllability of thickness dimension and rich means of nanoscale structure *** present,these characteristics have not been ***,in this paper,we combine recent reports with some microstructure regulation functions of ES to establish a more general TENGs design *** on the rich microstructure research results in the field of ES,much more new types of TENGs can be designed in the future.

关键词： Triboelectric nanogenerators Electrospinning Fiber microstructure regulation Nanomaterials Membranes Global optimization

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Piezo1 channel exaggerates ferroptosis of nucleus pulposus cells by mediating mechanical stress-induced iron influx

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Bone Research 2024年第2期12卷 334-348页

作者： Ziqian Xiang Pengfei Zhang Chunwang Jia Rongkun Xu Dingren Cao Zhaoning Xu Tingting Lu Jingwei Liu xiaoxiong wang Cheng Qiu Wenyang Fu Weiwei Li Lei Cheng Qiang Yang Shiqing Feng Lianlei wang Yunpeng Zhao Xinyu Liu Department of Orthopaedics Qilu Hospital of Shandong UniversityJinan 250012China University of Health and Rehabilitation Sciences Qingdao 226000China Xiangya School of Medicine Central South UniversityChangsha 410013China School of Nursing and Rehabilitation Shandong UniversityJinan 250012China Department of Pediatrics Cangzhou Central HospitalCangzhou 061011China Department of Pediatric Surgery Qilu Hospital of Shandong UniversityJinan 250012China Department of Pathology Qilu Hospital of Shandong UniversityJinan 250012China Department of Spine Surgery Tianjin HospitalTianjin UniversityTianjin 30021China d 9The Second Hospital of Shandong University Cheeloo College of MedicineShandong UniversityJinan 250012China

To date,several molecules have been found to facilitate iron influx,while the types of iron influx channels remain to be ***,Piezo1 channel was identified as a key iron transporter in response to mechanical ***1-mediated iron overload disturbed iron metabolism and exaggerated ferroptosis in nucleus pulposus cells(NPCs).Importantly,Piezo1-induced iron influx was independent of the transferrin receptor(TFRC),a well-recognized iron ***,pharmacological inactivation of Piezo1 profoundly reduced iron accumulation,alleviated mitochondrial ROS,and suppressed ferroptotic alterations in stimulation of mechanical ***,conditional knockout of Piezo1(Col2a1-CreERT Piezo1^(flox/flox))attenuated the mechanical injury-induced intervertebral disc degeneration(IVDD).Notably,the protective effect of Piezo1 deficiency in IVDD was dampened in Piezo1/Gpx4 conditional double knockout(cDKO)mice(Col2a1-CreERT Piezo1^(flox/flox)/Gpx4^(flox/flox)).These findings suggest that Piezo1 is a potential determinant of iron influx,indicating that the Piezo1-iron-ferroptosis axis might shed light on the treatment of mechanical stress-induced diseases.

关键词： stress overload channel

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利用机器视觉方法研究双摆运动规律

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物理实验 2024年第7期44卷 13-18页

作者：王晓雄南京理工大学物理学院江苏南京210094

利用机器视觉对双摆运动状态进行无接触测量研究了双摆的运动规律,尤其是混沌运动规律.研究表明:随着初始摆角增大,系统总能增加,双摆依次从周期性运动到准周期性运动最后到混沌运动转变,临界摆角为108°.双摆的能量是决定其能否出现混... 详细信息

利用机器视觉对双摆运动状态进行无接触测量研究了双摆的运动规律,尤其是混沌运动规律.研究表明:随着初始摆角增大,系统总能增加,双摆依次从周期性运动到准周期性运动最后到混沌运动转变,临界摆角为108°.双摆的能量是决定其能否出现混沌运动的关键因素.双摆系统结构简单、现象直观、成本低廉,而机器视觉方法可以实现无接触测量,避免了接触式测量对系统运动状态的干扰.该装置适用于大学物理实验课程中演示和研究混沌运动的规律.

关键词：双摆运动混沌运动 OpenCV 机器视觉

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娱乐化戏曲创编案例在戏曲通识教育中的引入

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宁波教育学院学报 2024年第1期26卷 95-98,123页

作者：王晓雄柳孟盛杭州电子科技大学人文学院浙江杭州310018 浙江理工大学马克思主义学院浙江杭州310018

戏曲承载了深厚的中国传统文化,是新时代讲好中国故事的重要载体,因此在学校中加强戏曲通识教育非常重要。当前的戏曲通识教育课堂多以介绍骨子老戏和严肃的新编戏为主,应有意识地引入娱乐化戏曲创编案例,使学生看到戏曲在当下的活力,... 详细信息

戏曲承载了深厚的中国传统文化,是新时代讲好中国故事的重要载体,因此在学校中加强戏曲通识教育非常重要。当前的戏曲通识教育课堂多以介绍骨子老戏和严肃的新编戏为主,应有意识地引入娱乐化戏曲创编案例,使学生看到戏曲在当下的活力,进而生起亲近传统戏曲之心。将娱乐化戏曲创编案例中的武侠戏、宫斗戏、科学戏引入戏曲通识教育,改变了原有的课堂引入方式和呈现样态,可以较好地提升教学效果。

关键词：娱乐化戏曲通识教育武侠戏宫斗戏

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玄武岩机制砂高性能混凝土组分相容性及耐久性研究

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新型建筑材料 2024年第7期51卷 122-126页

作者：侯源涛王晓雄杨黔何倍贵州省交通建设工程质量监督执法支队贵州贵阳550081 贵州宏信创达工程检测咨询有限公司贵州贵阳550014 同济大学先进土木工程材料教育部重点实验室上海201804

研究了玄武岩机制砂对不同种类水泥-粉煤灰胶凝体系与不同种类减水剂间的相容性及工作性的影响,基于最优配比配制出C25和C30强度等级玄武岩机制砂高性能混凝土,系统研究了其工作性、力学性能与耐久性。结果表明,不同减水剂与不同水泥的... 详细信息

研究了玄武岩机制砂对不同种类水泥-粉煤灰胶凝体系与不同种类减水剂间的相容性及工作性的影响,基于最优配比配制出C25和C30强度等级玄武岩机制砂高性能混凝土,系统研究了其工作性、力学性能与耐久性。结果表明,不同减水剂与不同水泥的相容性不同,玄武岩机制砂及其石粉含量对水泥浆体的工作性影响较大。玄武岩石粉含量在5%以内或同时增加减水剂掺量均可最有效提高净浆流动度,而采用干筛法生产的机制砂对砂浆流动度的提升效果较佳。14 d膨胀率试验显示,玄武岩机制砂具有一定潜在的碱活性,在使用中应进一步试验研究。

关键词：玄武岩机制砂高性能混凝土石粉相容性耐久性

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陆生植物对淡水中藻类化感抑制和机理评述

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环境保护科学 2024年第2期50卷 73-79页

作者：黄凯文汪小雄高静思谢炜平深圳职业技术大学材料与环境工程学院深圳518000

藻类的水华所带来污染问题,严重影响到人们的生产和生活,如何控制藻类的过度生长引起的污染问题,是广大水处理工作者的一大挑战。采用植物的化感作用控藻,有望为控制有害水华或赤潮爆发提供新的途径,但同时也存在一系列的问题需要迫切... 详细信息

藻类的水华所带来污染问题,严重影响到人们的生产和生活,如何控制藻类的过度生长引起的污染问题,是广大水处理工作者的一大挑战。采用植物的化感作用控藻,有望为控制有害水华或赤潮爆发提供新的途径,但同时也存在一系列的问题需要迫切解决。目前,陆生植物在抑藻方面的应用相对较少,仍能挖掘其他高效化感控藻物种。化感控藻的机理一直是研究的热点,目前在宏观、物理、化学、生物、直至微观方面机理的探索做了很多努力,并取得了很大成功。文章对陆生植物在藻污染控制方面的应用、化感物质的提取鉴定和抑藻机理方面进行了概况,并对其实际应用进行展望。

关键词：陆生植物化感作用藻类水华控制

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Seasonal metal fluxes derived by the interaction of surface water and groundwater in an aquaculture estuary

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海洋学报:英文版 2023年第8期42卷 113-124页

作者： xiaoxiong wang Jordi Garcia-Orellana Xiaogang Chen Jianan Liu Fenfen Zhang Jianguo Qu Zhuoyi Zhu Jinzhou Du State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200062China ICTA-UAB Institut de Ciència i Tecnologia AmbientalsUniversitat Autònoma de BarcelonaBarcelona E-08193Spain Departament de Física Universitat Autònoma de BarcelonaBarcelona E-08193Spain Key Laboratory of Coastal Environment and Resources of Zhejiang Province School of EngineeringWestlake UniversityHangzhou 310024China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200030China

Submarine groundwater discharge(SGD)plays a major role as a conveyor of metals to coastal ***,the seasonal change of metal fluxes derived through SGD is ***,we evaluated the behaviours and fluxes of trace metals(Mn,Fe,Ba,Pb,U,Cr,Zn,Cu)in an estuary under different seasonal *** behaviours of trace metals revealed that SGD was the source of Mn(3.51 mmol/(m^(2)·d)),Fe(0.174 mmol/(m^(2)·d))and Ba(0.024 mmol/(m^(2)·d)),but the Cu sink(−0.55μmol/(m^(2)·d))and other metals exhibited a seasonal source‒sink *** seasonal variation of dissolved organic matter and the fresh groundwater proportion in subterranean estuaries may have an important effect on metals fluxes especially for the Fe,Mn and *** result shows that the single seasonal metal fluxes estimation applied to the annual scale will cause a large deviation,up to 3.6 times for Fe,5.5 times for Mn,and 15 times for ***,the influence of seasonal fluctuations on SGDderived metal fluxes cannot be ignored,and our findings will be important for comprehending the metal budget and cycle in nearshore environment.

关键词： subterranean estuary seawater intrusion heavy metals seasonal changes coastal management

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车厢结构用冷轧马氏体钢电阻点焊工艺性能研究

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电焊机 2024年第5期54卷 117-123页

作者：王鹏博张永强惠亚军王泽阳伊日贵王晓雄张郢首钢集团有限公司技术研究院北京100043 首钢京唐钢铁联合有限责任公司河北唐山063200

为评估和对比1.2 mm厚的SCR1000和SCR1200冷轧马氏体钢的电阻点焊工艺性能,采用OBARA DB-220型点焊机进行电阻点焊试验,对比了两个钢种的焊接电流窗口、焊点破坏模式、力学性能、金相组织、疲劳性能。研究结果表明:随着钢材强度的提升,... 详细信息

为评估和对比1.2 mm厚的SCR1000和SCR1200冷轧马氏体钢的电阻点焊工艺性能,采用OBARA DB-220型点焊机进行电阻点焊试验,对比了两个钢种的焊接电流窗口、焊点破坏模式、力学性能、金相组织、疲劳性能。研究结果表明:随着钢材强度的提升,整体焊接电流窗口逐渐向左侧偏移,SCR1200达到最小焊核直径、焊接飞溅的焊接电流均小于SCR1000;SCR1200上限电流焊点剪切力比SCR1000提升了8.9%,而SCR1000的焊点韧性较好,其断口韧窝更细小和密集;相对熔核区和母材区,SCR1000、SCR1200的点焊接头的热影响区出现了明显的软化区,但SCR1200的软化区硬度略高。在相同载荷下,SCR1200的疲劳寿命高于SCR1000,点焊接头的疲劳强度随着钢板强度的增加而提高。

关键词：马氏体钢电阻点焊电流窗口力学性能疲劳性能

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GIS-based prediction method of shallow landslides induced by heavy rainfall in large mountainous areas

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Journal of Mountain Science 2024年第5期21卷 1534-1548页

作者： LUO xiaoxiong LI Congjiang ZHOU Jiawen State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan UniversityChengdu 610065China College of Water Resource and Hydropower Sichuan UniversityChengdu 610065China

Rainwater runoff that does not infiltrate the soil during heavy rainfall may increase slope instability. The effect of runoff is usually neglected in conventional rainfall-induced slope failure analysis to simplify the model. To analyze the effect of runoff on slope stability, this study simultaneously simulated the effects of surface runoff and rainfall infiltration on bank slopes in the Three Gorges Reservoir Area. A shallow slope failure method that can be used to analyze runoff was proposed based on the modified Green-Ampt model, the simplified Saint-Venant model, and the infinite slope model. In this model, the modified Green–Ampt model was used to estimate the rainfall infiltration capacity and the wetting front depth. The eight-flow(D8) method and the simplified Saint-Venant model were selected to estimate the distribution of runoff. By considering the wetting front depth as the slip surface depth, the factor of safety of the slope could be determined using the infinite slope stability model. A comparison of the different models reveals that runoff can escalate the instability of certain slopes, causing stable slopes to become unstable. Comparison of the unstable areas obtained from the simulation with the actual landslide sites shows that the model proposed in this study can successfully predict landslides at these sites. The slope instability assessment model proposed in this study offers an alternative approach for estimating high-risk areas in large mountainous regions.

关键词： Rainfall-induced landslide Surface runoff Infiltration Geographic Information System Landslide susceptibility

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