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magnetron sputtered nickel oxide with suppressed interfacial defect states for efficient inverted perovskite solar cells

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Journal of Energy Chemistry 2025年第1期100卷 348-355页

作者： guoqiang ma Qin Tan Zhaoning Li Jingwei Xiu Jiafeng Wang Tianle Cheng Dong He Qiang Sun Xuhang ma Francesco Lamberti Zhubing He Department of materials Science and Engineering Institute of Innovative Materials (I2M) Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG)Southern University of Science and Technology (SUSTech) Core Research Facilities Southern University of Science and Technology Department of Chemical Sciences Department of Industrial Engineering University of Padova

Widely used spin-coated nickle oxide （NiOx） based perovskite solar cells often suffer from severe interfacial reactions between the NiOxand adjacent perovskite layers due to surface defect states,which inherently impair device performance in a long-term view,even with surface molecule *** this study,we developed high-quality magnetron-sputtered NiOxthin films through detailed process optimization,and compared systematically sputtered and spin-coated NiOxthin film surfaces from materials to *** sputtered NiOxfilms exhibit improved crystallinity,smoother surfaces,and significantly reduced Ni3+or Ni vacancies compared to their spin-coated ***,the interface between the perovskite and sputtered NiOxfilm shows a substantially reduced density of defect *** solar cells （PSCs） fabricated with our optimally sputtered NiOxfilms achieved a high power conversion efficiency （PCE） of up to 19.93%and demonstrated enhanced stability,maintaining 86.2% efficiency during 500 h of maximum power point tracking under one standard sun ***,with the surface modification using (4-(2,7-dibromo-9,9-dimethylacridin-10（9H）-yl)butyl)p hosphonic acid （DmacPA）,the device PCE was further promoted to 23.07%,which is the highest value reported for sputtered NiOxbased PSCs so far.

关键词： Nickle oxide magnetron sputter Defect Stability Perovskite solar cell

THE DYNAMIC BUCKLING OF ELASTIC-PLASTIC COLUMN SUBJECTED TO AXIAL IMPACT BY A RIGID BODY

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Acta Mechanica Solida Sinica 2005年第3期18卷 256-264页

作者： Han Zhijun Wang Jingchao Cheng guoqiang ma Hongwei Zhang Shanyuan Institute of Applied Mechanics Taiyuan University of Technology Taiyuan 030024 China

The dynamic buckling of an elastic-plastic column subjected to axial impact by a rigid body has been discussed in this paper. The whole traveling process of elastic-plastic waves under impact action is analyzed with the characteristics method. The regularity of stress changes in both column ends and the first separating time of a rigid body and column are obtained. By using the energy principle and taking into account the propagation and reflection of stress waves the lateral disturbance equation is derived and the power series solution is given. In addition, the critical buckling condition can be obtained from the stability analysis of the solution. By numerical computation and analysis, the relationship among critical velocity and impact mass, hardening modulus, and buckling time is given.

关键词： dynamic buckling stress wave critical criteria power series solution

Sulfur isotopic composition and source identification of atmospheric environment in central Zhejiang,China

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Science China Earth Sciences 2010年第11期53卷 1717-1725页

作者： Zhang MiaoYun Wang ShiJie ma guoqiang Zhou HuaiZhong Fu Jun Chinese Acad Sci Inst Geochem State Key Lab Environm Geochem Guiyang 550002 Peoples R China Jinhua Environm Monitoring Ctr Jinhua 321013 Peoples R China Environm Monitoring Ctr Zhejiang Prov Hangzhou 310012 Zhejiang Peoples R China

Sulfur dioxide and sulfate aerosols in the atmosphere are significant factors leading to acidification of the atmospheric environment and worsening the pollution of acid deposition. Because of the "fingerprint" characteristics of the stable sulfur isotopic composition, sulfur isotope has been widely adopted in environmental researches concerning sulfur cycle and source identification. In this study, the atmospheric environment of Jinhua City, central Zhejiang Province, was continuously monitored, and the sulfur isotopic composition of SO2 and sulfate aerosols in the atmosphere was analyzed. The results indicate that the variation of δ34S values for SO2 ranges from 1.0‰ to 7.5‰, and annual average is 4.7‰±2.3‰, whereas that of sulfate aerosols ranges from 6.4‰ to 9.8‰,and annual average is 8.1‰±1.0‰. The δ 34S values for SO2 have significant seasonal variations, which are 7.0‰ in winter and 3.3‰ in summer. These variations cannot be attributed to a single factor, and we suggest a temperature-dependent isotope equilibrium fractionation and elevated biogenic sulfur emissions of isotopically light S in summer may be the main controlling mechanisms. Furthermore, we also discuss the δ 34S model of atmospheric SO2 oxidation to form sulfate, and suggest that heterogeneous oxidation dominates in the oxidation reactions of atmospheric SO2 in the central Zhejiang Province. We further suggest that the relative humidity in the atmosphere plays an important role in the oxidation mechanism of atmospheric SO2.

关键词： sulfur isotope SO2 aerosol homogeneous oxidation heterogeneous oxidation

Behavioral Feature and Correlative Detection of Multiple Types of Node in the Internet of Vehicles

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Computers, materials & Continua 2020年第8期64卷 1127-1137页

作者： Pengshou Xie guoqiang ma Tao Feng Yan Yan Xueming Han School of Computer and Communications Lanzhou University of TechnologyLanzhou730050China Department of Computing Faculty of Science and EngineeringMacquarie UniversitySydneyNSW 2109Australia

Undoubtedly,uncooperative or malicious nodes threaten the safety of Internet of Vehicles(IoV)by destroying routing or *** this end,some researchers have designed some node detection mechanisms and trust calculating algorithms based on some different feature parameters of IoV such as communication,data,energy,etc.,to detect and evaluate vehicle ***,it is difficult to effectively assess the trust level of a vehicle node only by message forwarding,data consistency,and energy *** order to resolve these problems,a novel mechanism and a new trust calculating model is proposed in this ***,the four tuple method is adopted,to qualitatively describing various types of nodes of IoV;Second,analyzing the behavioral features and correlation of various nodes based on route forwarding rate,data forwarding rate and physical location;third,designing double layer detection feature parameters with the ability to detect uncooperative nodes and malicious nodes;fourth,establishing a node correlative detection model with a double layer structure by combining the network layer and the perception ***,we conducted simulation experiments to verify the accuracy and time of this detection method under different speed-rate topological conditions of *** results show that comparing with methods which only considers energy or communication parameters,the method proposed in this paper has obvious advantages in the detection of uncooperative and malicious nodes of IoV;especially,with the double detection feature parameters and node correlative detection model combined,detection accuracy is effectively improved,and the calculation time of node detection is largely reduced.

关键词： IoV behavioral feature double layer detection feature correlation analysis correlative detection model

Microstructure and strength of a tantalum-tungsten alloy after cold rolling from small to large strains

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Journal of materials Science & Technology 2021年第24期83卷 34-48页

作者： guoqiang ma Darcy A.Hughes Andrew W.Godfrey Qiang Chen Niels Hansena Guilin Wu College of materials Science and Engineering Chongqing UniversityChongqing400044China Department of Mechanical Engineering Technical University of DenmarkDK-2800KgsLyngbyDenmark Fremont CAUSA Laboratory of Advanced materials(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Southwest Technology and Engineering Research Institute Chongqing400039China Technical University of Denmark Risoe CampusDK-4000RoskildeDenmark Beijing Advanced Innovation Center for materials Genome Engineering University of Science and Technology BeijingBeijing100083China

Microstructural evolution of a refractory tantalum-tungsten alloy(Ta-4%W)after cold rolling from small to large von-Mises strains(0.12-2.7)was quantitatively studied using transmission electron *** subdivision was observed to take place at two *** necessary boundaries nearly paralleling to slip planes enclosed volumes further divided by diffuse cells and by remnants of Taylor *** increasing strain,the diffuse cells evolved into clear incidental dislocation boundaries enclosing cells,while the Taylor lattices *** subdivision was thus intermediate between those observed in cell forming and in non-cell forming ***,the average misorientation angle across all boundaries increased while the average boundary spacing *** of the microstructural parameters at each strain level were found to exhibit universal scaling *** microstructural evolution was found closely linking to the observed high strength and strain hardening of this *** on measured microstructural parameters,the flow stress was calculated utilizing linearly addition of the strengthening by solutes,incidental dislocation boundaries(Taylor strengthening)and geometrically necessary boundaries(Hall-Petch equation).The relative contribution of each strength mechanism evolved with increasing strain and with microstructural evolution:solutes and friction stress dominated at small strains while boundaries dominated at larger *** strengths were in close agreement with experimental tension tests and demonstrated an unexpectedly high and continuous parabolic hardening without transition across this large strain range.

关键词： Tantalum Deformation microstructure Geometrically necessary boundaries Taylor lattices Flow stress

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运动员的肠道菌群特征

中国组织工程研究 2025年第14期29卷 3051-3060页

作者：张秋萍徐倩田华君褚羽丹何俊良马国强邱俊上海体育科学研究所(上海市反兴奋剂中心) 上海市200030 国家体育总局“竞技运动能力综合评定重点实验室” 上海市200030

背景:了解运动员肠道菌群的特征及影响因素有助于确定相关运动项目的最佳肠道微生物组成,寻求提高运动表现和恢复的有效途径,并为个性化营养方案提供独特视角。目的:总结运动员的肠道菌群特征,从运动训练和饮食摄入两方面阐述影响运动... 详细信息

背景:了解运动员肠道菌群的特征及影响因素有助于确定相关运动项目的最佳肠道微生物组成,寻求提高运动表现和恢复的有效途径,并为个性化营养方案提供独特视角。目的:总结运动员的肠道菌群特征,从运动训练和饮食摄入两方面阐述影响运动员肠道菌群特征的重要因素。方法:检索PubMed、ScienceDirect、中国知网、万方和维普数据库2004-2024年发表的文献,英文检索词为“microbiota,microbiome,athlete,exercise,training,diet,nutrition,dietary fiber,protein,ketogenic,fat”,中文检索词为“肠道菌群,肠道微生物,运动员,训练,比赛,饮食,营养”。排除研究质量较差及内容不相关的文献后,最终纳入65篇文献进行综述分析。结果与结论:①与普通人群相比,精英运动员的肠道菌群以α多样性增加、厚壁菌门/拟杆菌门比值升高、健康有益菌丰度增加、有助于运动表现的功能途径富集为主要特征;②项目类型和训练负荷与运动员肠道菌群物种结构及功能表达密切相关;③由代谢物介导的宿主与肠道微生物间的双向交流,是运动影响肠道菌群的重要机制;④阶段训练通常能够引发肠道微生物群产生适应性变化,并且菌群在结构或功能上的改变具有持续效应;⑤宏量营养素的种类、数量及组合形式能够显著影响肠道菌群结构和功能,并与运动训练发挥协同叠加或削弱抵消的作用;⑥未来应持续加强对运动员肠道菌群的相关探索,明确因果关系,建立运动训练干预新靶点。

关键词：肠道菌群运动员运动训练饮食肠道微生物综述

Identifying facile material descriptors for Charpy impact toughness in low-alloy steel via machine learning

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Journal of materials Science & Technology 2023年第1期132卷 213-222页

作者： Yimian Chen Shuize Wang Jie Xiong Guilin Wu Junheng Gao Yuan Wu guoqiang ma Hong-Hui Wu Xinping mao Beijing Advanced Innovation Center for materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Yangjiang Branch Guangdong Laboratory for Materials Science and Technology(Yangjiang Advanced Alloys Laboratory)YangjiangGuangdong 529500China School of materials Science and Engineering Harbin Institute of TechnologyShenzhen 518055China

High toughness is highly desired for low-alloy steel in engineering structure applications,wherein Charpy impact toughness(CIT)is a critical factor determining the toughness *** the current work,CIT data of low-alloy steel were collected,and then CIT prediction models based on machine learning(ML)algorithms were *** feature construction strategies were *** is solely based on alloy composition,another is based on alloy composition and heat treatment parameters,and the last one is based on alloy composition,heat treatment parameters,and physical features.A series of ML methods were used to effectively select models and material descriptors from a large number of *** with the strategy solely based on the alloy composition,the strategy based on alloy composition,heat treatment parameters together with physical features perform much ***,a genetic programming(GP)based symbolic regression(SR)approach was developed to establish a physical meaningful formula between the selected features and targeted CIT data.

关键词： machine learning Symbolic regression Low-alloy steel Charpy impact toughness

Gefitinib facilitates PINK1/Parkin-mediated mitophagy by enhancing mitochondrial recruitment of OPTN

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Fundamental Research 2022年第5期2卷 807-816页

作者： Ningning Li Shan Sun guoqiang ma Hongyu Hou Qilian ma Li Zhang Zengli Zhang Hongfeng Wang Zheng Ying Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences Soochow UniversitySuzhouJiangsu 215123China Department of Respiratory and Critical Care Medicine The Second Affiliated Hospital of Soochow UniversitySuzhouJiangsu 215004China Key Laboratory of Nuclear Medicine Ministry of HealthJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear MedicineWuxiJiangsu 214063China

Gefitinib,a well-known epidermal growth factor receptor(EGFR)tyrosine kinase inhibitor for the targeted therapy of lung cancer,induces autophagy in association with drug ***,it remains unclear whether gefitinib treatment can affect the selective form of autophagy(i.e.,mitophagy)and be beneficial for the treatment of human diseases with decreased autophagy,such as neurodegenerative ***,we show that gefitinib treatment promotes PINK1/Parkin-mediated mitophagy in both nonneuronal and neuronal cells,and this effect is independent of ***,we found that gefitinib treatment increases the recruitment of the autophagy receptor optineurin(OPTN)to damaged mitochondria,which is a downstream signaling event in PINK1/Parkin-mediated *** addition,gefitinib treatment significantly alleviated neuronal damage in TBK1-deficient neurons,resulting in impeded *** conclusion,our study suggests that gefitinib promotes PINK1/Parkin-mediated mitophagy via OPTN and may be beneficial for the treatment of neurodegenerative diseases that are associated with defective mitophagy.

关键词： Gefitinib Autophagy Mitophagy Parkin OPTN

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税制结构基础理论研究

税务研究 2015年第1期 3-15页

作者：马国强东北财经大学

税制结构是税收制度中各税种的关系,包括税种组合方式与税种相对地位两项内容,分一级税制结构、二级税制结构等多个层级。以直接税与间接税的关系表示税制结构,无法将全部税种划分为直接税与间接税,也不利于分析税制结构的经济增长效应... 详细信息

税制结构是税收制度中各税种的关系,包括税种组合方式与税种相对地位两项内容,分一级税制结构、二级税制结构等多个层级。以直接税与间接税的关系表示税制结构,无法将全部税种划分为直接税与间接税,也不利于分析税制结构的经济增长效应与收入分配效应;以OECD与IMF税种分类中各税种的关系表示税制结构,存在着税种分类与税种组合方式不一致的问题。根据税种组合法则,应当以多层次矛盾性税种的关系表示税制结构。从时序角度看,在税种组合方式方面,税制结构经历了传统税制结构到现代税制结构的转轨性变化。传统税制结构按照经济部门设置税种,在农村征收农牧业税,在城市征收工商业税;现代税制结构按照经济流程设置税种,对要素所得征收所得税,对商品销售征收商品税。农牧业税与工商业税的关系与所得税与商品税的关系不同时表现为直接税与间接税的关系,由农牧业税与工商业税转换为所得税与商品税不表现为直接税与间接税相对地位的变化。从横截面角度看,现阶段现代税制结构的差异主要表现为所得税与商品税相对地位的差异。以所得税与商品税的相对地位为标准,将现代税制结构划分为所得税为主、商品税为主、所得税与商品税并重三种类型,无法准确表现现阶段现代税制结构的差异。根据现阶段所得税与商品税比值与比重差的分布状态,应当将税制结构划分为所得税超大、商品税超大、所得税与商品税主次搭配、商品税与所得税主次搭配、所得税与商品税或商品税与所得税并重五种类型,各类税制结构中所得税与商品税或商品税与所得税比值的标志值分别为3、2和1。

关键词：税制结构税制结构类型传统税制结构现代税制结构