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Electronic structure and spin state regulation of vanadium nitride via a sulfur doping strategy toward flexible zinc-air batteries

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Journal of Energy Chemistry 2024年第2期89卷 239-249,I0007页

作者： Daijie Deng honghui zhang Jianchun Wu Xing Tang Min Ling Sihua Dong Li Xu Henan Li Huaming Li Institute for Energy Research Institute of Quantum and Sustainable TechnologySchool of Chemistry and Chemical EngineeringSchool of Materials Science and EngineeringJiangsu Province and Education Ministry Co-Sponsored Synergistic Innovation Center of Modern Agricultural EquipmentJiangsu UniversityZhenjiang 212013JiangsuChina Key Laboratory of Radio Frequency and Micro-Nano Electronics of Jiangsu Province Nanjing 210023JiangsuChina Zhenjiang Kangyuan Electrical Appliance Co. Ltd.Zhenjiang 212013JiangsuChina College of Chemical and Biological Engineering Zhejiang UniversityHangzhou 310027ZhejiangChina YTO Group Corporation Dongfanghong(Henan)Agricultural Service Technology Co. Ltd.Luoyang 471033HenanChina

Owing to the distinctive structural characteristics,vanadium nitride(VN)is highly regarded as a catalyst for oxygen reduction reaction(ORR)in zinc-air batteries(ZABs).However,VN exhibits limited intrinsic ORR activity due to the weak adsorption ability to O-containing species.Here,the S-doped VN anchored on N,S-doped multi-dimensional carbon(S-VN/Co/NS-MC)was constructed using the solvothermal and in-situ doping methods.Incorporating sulfur atoms into VN species alters the electron spin state of vanadium in the S-VN/Co/NS-MC for regulating the adsorption energy of vanadium sites to oxygen molecules.The introduced sulfur atoms polarize the V 3d_(z)^(2) electrons,shifting spin-down electrons closer to the Fermi level in the S-VN/Co/NS-MC.Consequently,the introduction of sulfur atoms into VN species enhances the adsorption energy of vanadium sites for oxygen molecules.The*OOH dissociation transitions from being unspontaneous on the VN surface to a spontaneous state on the S-doped VN surface.Then,the ORR barrier on the S-VN/Co/NS-MC surface is reduced.The S-VN/Co/NS-MC demonstrates a higher half-wave potential and limiting current density compared to the VN/Co/N-MC.The S-VN/Co/NS-MC-based liquid ZABs display a power density of 195.7 m W cm^(-2),a specific capacity of 815.7 m A h g^(-1),and a cycling stability exceeding 250 h.The S-VN/Co/NS-MC-based flexible ZABs are successfully employed to charge both a smart watch and a mobile phone.This approach holds promise for advancing the commercial utilization of VN-based catalysts in ZABs.

关键词： S-doped VN Electronic structures Spin state regulation Oxygen reduction reaction Zinc-air batteries

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Analysis of the optimal target node to reduce seizure-like discharge in networks

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Chinese Physics B 2024年第5期33卷 712-720页

作者：闫璐瑶张红慧孙中奎 School of Mathematics and Statistics Northwestern Polytechnical UniversityXi'an 710129China MIIT Key Laboratory of Dynamics and Control of Complex Systems Xi'an 710129China

Network approaches have been widely accepted to guide surgical strategy and predict outcome for epilepsy treatment.This study starts with a single oscillator to explore brain activity,using a phenomenological model capable of describing healthy and epileptic states.The ictal number of seizures decreases or remains unchanged with increasing the speed of oscillator excitability and in each seizure,there is an increasing tendency for ictal duration with respect to the speed.The underlying reason is that the strong excitability speed is conducive to reduce transition behaviors between two attractor basins.Moreover,the selection of the optimal removal node is estimated by an indicator proposed in this study.Results show that when the indicator is less than the threshold,removing the driving node is more possible to reduce seizures significantly,while the indicator exceeds the threshold,the epileptic node could be the removal one.Furthermore,the driving node is such a potential target that stimulating it is obviously effective in suppressing seizure-like activity compared to other nodes,and the propensity of seizures can be reduced 60%with the increased stimulus strength.Our results could provide new therapeutic ideas for epilepsy surgery and neuromodulation.

关键词： epilepsy driving node epileptic node seizure regulation

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Dispatching Fuel-cell Hybrid Electric Vehicles Toward Transportation and Energy Systems Integration

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CSEE Journal of Power and Energy Systems 2023年第4期9卷 1540-1550页

作者： Dejie Zhao Ming Zhou Jianxiao Wang Tiance zhang Gengyin Li honghui zhang School of Electrical and Electronic Engineering North China Electric Power UniversityBeijing 102206China China Automotive Technology and Research Center Co.Ltd. Tianjin300300China

With the increasing integration of traditional elec-tric vehicles(EVs),the ensuing congestion and overloading issues have threatened the reliability of power grid operations.Hydrogen has been advocated as a promising energy carrier to achieve low-carbon transportation and energy(trans-energy)systems,which can support the popularization of fuel-cell hybrid EVs(FCHEVs)while enhancing the flexibility of power grids.In this paper,we propose an optimal scheduling framework for trans-energy systems that evaluates the merits of the hydrogen supply chain from water electrolysis,compressed storage and transportation to FCHEV utilization.A detailed FCHEV model is established,and mileage is modeled as a function of the stored electricity and hydrogen mass.A stochastic programming-based scheduling model is formulated,which minimizes the total cost of unit commitment and the hydrogen supply chain.The Dijkstra algorithm is adopted to search the shortest path for hydrogen transportation.Case studies demonstrate that FCHEVs can reduce the operational costs of tran-energy systems and facilitate the accommodation of renewable energy when compared to traditional EVs.Index Terms-Fuel-cell hybrid electric vehicle,hydrogen,mileage model,shortest path search,trans-energy systems.

关键词： Fuel-cell hybrid electric vehicle hydrogen,mileage model shortest path search trans-energy systems.

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声门下支气管源性囊肿1例

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中华耳鼻咽喉头颈外科杂志 2024年第2期59卷 177-179页

作者：宋柳杨慧景星涛张宏慧四川大学华西医院耳鼻咽喉-头颈外科成都610041

患者女,36岁,因“咽部异物感1个月余,呼吸困难15 d”就诊。门诊电子纤维喉镜提示,声门下一半球形肿物隆起,突入并堵塞气道90%,遂紧急行气管切开术。术前颈部增强CT见C6平面喉咽右侧壁软组织结节影凸向气管腔,边缘见低密度影。急诊在全... 详细信息

患者女,36岁,因“咽部异物感1个月余,呼吸困难15 d”就诊。门诊电子纤维喉镜提示,声门下一半球形肿物隆起,突入并堵塞气道90%,遂紧急行气管切开术。术前颈部增强CT见C6平面喉咽右侧壁软组织结节影凸向气管腔,边缘见低密度影。急诊在全身麻醉下行经口支撑喉镜下CO 2激光声门下肿物切除术。病理标本大体检查示,肿瘤大小2.0 cm×1.0 cm,剖开内为黏稠胶冻样组织,囊壁厚0.2 cm,术后病理诊断为支气管源性囊肿。患者于术后第2天堵管,术后3 d出院,出院1年复查未见肿物复发,预后良好。

关键词：咽部异物感支气管源性囊肿肿物切除术病理标本声门下预后良好结节影低密度影

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Characterizing the urban spatial structure using taxi trip big data and implications for urban planning

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Frontiers of Earth Science 2021年第1期15卷 70-80页

作者： Haibo LI Xiaocong XU Xia LI Shifa MA honghui zhang School of Geography and Planning Guangdong Key Laboratory for Urbanization and Geo-simulationSunYat-sen UniversityGuangzhou 510275China School of Geographic Sciences Key Lab.of Geographic Information Science(Ministry of Education)East China Normal UniversityShanghai 200241China School of Architecture and Urban Planning Guangdong University of Technology Guangzhou 510090China Guangdong Guodi Planning Science Technology Co. ltdGuangzhou 510275China

Urban spatial structure is an important feature for assessing the effects of urban planning.Quantifying an urban spatial structure cannot only help in identifying the problems with current planning but also provide a basic reference for future adjustments.Evaluation of spatial structure is a difficult task for planners and researchers and this has been usually carried out by comparing different land use structures.However,these methods cannot efficiently reflect the influence of human activities.With the wide application of big data,analyzing data on human travel behavior has increasingly been carried out to reveal the relationship between urban spatial structure and urban planning.In this study,we constructed a human-activity space network using the taxi trip big data.Clustering at different scales revealed the hierarchy and redundancy of the spatial structure for assessing the appropriateness and shortcomings of urban planning.This method was applied to a case study based on one-month taxi trip data of Dongguan City.Existing urban spatial structures at different scales were retrieved and utilized to assess the effectiveness of the master plan designed for 2000 to 2015 and 2008 to 2020,which can help identify the limitations and improvements in the spatial structure designed in these two versions of the master plan.We also evaluated the potential effect of the master plan designed for 2016 to 2035 by providing a reference for reconstructing and optimizing future urban spatial structure.The analysis demonstrated that the taxi trip data are important big data on social spatial perception,and taxi data should be used for evaluating spatial structures in future urban planning.

关键词： urban structure taxi GPS data complex networks community management

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“道”文化心灵精神及其对中国文学的话语塑造

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四川大学学报（哲学社会科学版） 2024年第1期 116-128,214页

作者：张宏辉郑春兰四川大学文学与新闻学院成都610064 四川大学出版社成都610064

“道”作为中国文化的至高范畴和终极据点,在“思想-言说”结构及文化心灵方面形成了“道说希声”这一内在规训及根本特质。而正是“道说希声”,根本性地塑造了中国文化以“致和”“成善”“养德”为基本心灵特征与价值追求、以“乐和... 详细信息

“道”作为中国文化的至高范畴和终极据点,在“思想-言说”结构及文化心灵方面形成了“道说希声”这一内在规训及根本特质。而正是“道说希声”,根本性地塑造了中国文化以“致和”“成善”“养德”为基本心灵特征与价值追求、以“乐和”“忧患”“静朴”“逍遥”为根本精神、以“经世致用”与“味美趣美”为艺术审美追求的“道”文化心灵精神。“道”文化心灵精神作为一种深层性、稳定性、基因型的结构力量,不仅对中国传统文化整体及其历史发展有着根本的轨导与牵制的作用,而且深刻影响和决定了中国文学及文论的话语形态与话语体系,建构和生成了中国文学及文论追求大宇宙及大生命关怀、致力感物抒怀、以“意象-语象”为中心(“象本位”)、基于“道”的核心范畴性表达等结构性特征。

关键词： “道” 道说希声文化心灵文学话语感物象本位

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声学黑洞铝型材板结构减振特性仿真研究

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噪声与振动控制 2024年第1期44卷 75-79,141页

作者：彭飞张欣超张洪辉廖杨中车工业研究院有限公司北京100071 清华大学工业工程系北京100084 西南交通大学机械工程学院成都610031

声学黑洞(Acoustic Black Hole,ABH)技术作为一种新型高效的能量聚焦以及振动控制技术,在减振降噪方面具有很好应用潜力。铝型材板结构作为一种夹层结构,具有高比刚度和高比强度等优异轻量化特性,广泛应用于列车外地板、船舶、航空航天... 详细信息

声学黑洞(Acoustic Black Hole,ABH)技术作为一种新型高效的能量聚焦以及振动控制技术,在减振降噪方面具有很好应用潜力。铝型材板结构作为一种夹层结构,具有高比刚度和高比强度等优异轻量化特性,广泛应用于列车外地板、船舶、航空航天等领域中。为了探究ABH和铝型材板结构相结合后是否还具有典型的ABH效应,运用有限元数值模拟方法研究嵌入式ABH铝型材板结构的振动能量聚焦特性。对于频点和频带聚焦特性分析结果表明,在铝型材板结构中嵌入ABH特征结构可以起到显著振动能量聚焦效果。此外,根据聚焦特性分析结果,在ABH铝型材板结构中的ABH特定区域内敷设阻尼材料,并通过仿真计算验证了其减振特性。结果表明,由ABH铝型材板结构附加阻尼材料所得的组合结构振动水平显著低于普通铝型材板结构,部分频率下振动衰减高达52.6 dB。这为轨道交通领域提供了一种很有应用潜力的结构减振降噪新思路。

关键词：声学声学黑洞铝型材板结构能量聚焦减振降噪仿真分析

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人类卵母细胞和早期胚胎发育异常的遗传学研究进展

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中国细胞生物学学报 2024年第4期46卷 646-656页

作者：张鸿惠赵世刚赵涵山东大学生殖医学与子代健康全国重点实验室山东大学妇儿与生殖健康研究院济南250012

卵母细胞和早期胚胎的正常发育是获得健康后代的关键,遗传因素在卵母细胞成熟和早期胚胎发育过程中发挥重要作用。调控卵母细胞和早期胚胎发育的关键基因突变可导致卵母细胞成熟障碍、受精失败或早期胚胎发育停滞,进而导致不孕或早期流... 详细信息

卵母细胞和早期胚胎的正常发育是获得健康后代的关键,遗传因素在卵母细胞成熟和早期胚胎发育过程中发挥重要作用。调控卵母细胞和早期胚胎发育的关键基因突变可导致卵母细胞成熟障碍、受精失败或早期胚胎发育停滞,进而导致不孕或早期流产等。随着全基因组测序和全外显子组测序技术的广泛应用,越来越多的致病基因突变被发现,为不孕患者提供了可靠的诊疗靶点。该文系统回顾了导致人类卵母细胞成熟、受精和早期胚胎发育异常的致病基因,以期促进其在辅助生殖遗传咨询中的应用。

关键词：卵母细胞受精早期胚胎基因突变

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超声应力检测技术综述

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声学技术 2024年第2期43卷 151-162页

作者：尚飞孙博张宏辉刘文婧内蒙古科技大学机械工程学院内蒙古包头014010 内蒙古自治区机电系统智能诊断与控制重点实验室内蒙古包头014010 北京科技大学国家板带生产先进装备工程技术研究中心北京100083

应力检测是保证机械装置稳定可靠运行的必要手段,而考虑到机械装置结构的复杂性与工作环境的多样性,其对检测方法的要求较高。超声应力检测以其高精度、无害性、强适应性等优点在连续介质与非连续介质内外应力检测中得到了广泛的关注与... 详细信息

应力检测是保证机械装置稳定可靠运行的必要手段,而考虑到机械装置结构的复杂性与工作环境的多样性,其对检测方法的要求较高。超声应力检测以其高精度、无害性、强适应性等优点在连续介质与非连续介质内外应力检测中得到了广泛的关注与应用。文章针对超声应力检测中最主要的三种方法:声弹性效应法、声反射系数法以及非线性超声检测法,结合国内外学者的研究成果,从其工作原理、发展过程与实际应用等方面分别进行综述,总结其发展现状,并对其未来发展提出展望。

关键词：超声波技术应力检测声弹性效应声反射系数非线性超声

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Material flow analysis and global warming potential assessment of an industrial insect-based bioconversion plant using housefly larvae

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Journal of Environmental Sciences 2024年第5期139卷 483-495页

作者： Tao Lu Fan Lü Nanlin Liao honghui Chai Hua zhang Pinjing He Institute of Waste Treatment and Reclamation Tongji UniversityShanghai 200092China State Key Laboratory of Pollution Control and Source Reuse Tongji UniversityShanghai 200092China Zhejiang Qihe Ecological Technology Co. Ltd.Hangzhou 310052China

The significant increase in the demand for biomass waste treatment after garbage classification has led to housefly larvae treatment becoming an attractive treatment option.It can provide a source of protein while treating biomass waste,which means that nutrients can be returned to the natural food chain.However,the performance of this technology in terms of its environmental impacts is still unclear,particularly with regards to global warming potential(GWP).This study used a life cycle assessment(LCA)approach to assess a housefly larvae treatment plant with a treatment capacity of 50 tons of biomass waste per day.The LCA results showed that the 95% confidence intervals for the GWP in summer and winter were determined to be 24.46-32.81 kg CO_(2) equivalent(CO_(2)-eq)/ton biomass waste and5.37-10.08 kg CO_(2)-eq/ton biomass waste,respectively.The greater GWP value in summer is due to the longer ventilation time and higher ventilation intensity in summer,which consumes more power.The main GWP contributions are from(1)electricity needs(accounting for 78.6% of emissions in summer and 70.2%in winter)and(2)product substitution by mature housefly larvae and compost(both summer and winter accounting for 96.8% of carbon reduction).

关键词： Biomass waste Musca domestica Housefly larvae Life cycle assessment Global warming potential

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