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Journal of Materials Science & Technology 2021年第5期64卷 99-113页

作者： Pan Liu Qinhao Zhang Xinran Li jiming hu Fahe Cao Department of Chemistry Zhejiang UniversityHangzhou310027China School of Materials Sun Yat-sen UniversityGuangzhou510006China

The surface properties of weathering steel(WS)is very important for its service performance and safety,and the localized corrosion induced by inclusions is closely related to the surface properties of WS and its application.In the current work,a common spherical(Al,Mg,Ca,Mn)-oxy-sulfide inclusion was selected to investigate the corrosion evolution of complex inclusion and its effect on localized corrosion on WS surface.The results indicate the inclusion in WS consists of(Ca,Mn)sulfides part and(Ca,Al,Mg)oxides part with complex core-shell structure.Locally preferential dissolution occurs in(Ca,Mn)sulfides part as well as metal matrix around the inclusions.Furthermore,both parts of the inclusions with poor conductivity and high-density dislocation at metal matrix around the inclusions was found,which suggests that traditional micro-galvanic corrosion cell may not be the cause of inclusion-induced localized corrosion on WS surface at initial stage of corrosion.The variation in maximum and average depth around the inclusion or selected region with immersion time indicates that localized corrosion induced by inclusions is overwhelmed by uniform corrosion of WS in the latter stage of immersion,then the rust formed on WS surface consists of two layers.

关键词： Weathering steel Inclusions Marine environment Localized corrosion Rust

Effect of aging treatment on microstructure and corrosion behavior of Al-Zn-Mg aluminum alloy in aqueous solutions with different aggressive ions

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Journal of Materials Science & Technology 2021年第5期64卷 85-98页

作者： Pan Liu Lulu hu Qinhao Zhang Cuiping Yang Zuosi Yu Jianqing Zhang jiming hu Fahe Cao Department of Chemistry Zhejiang UniversityHangzhou 310027China

The microstructure and corrosion behavior of Al-Zn-Mg alloy(namely 7×××)after natural aging treatment(NAT)and artificial aging treatment(AAT)in aqueous NaCl solutions containing different aggressive ions have been investigated in current work.Results of microstructure characterization demonstrate that the aging treatment has a great influence on the grain size and precipitates.The grain size is relatively sizeable and no evident precipitates are observed in alloy after NAT comparable with that after AAT.The electrochemical corrosion behavior of alloy was studied by polarization curve and electrochemical impedance spectroscopy(EIS).The corrosion potential(E_(corr))of the aluminum alloy is more negative in 3.5 wt.%NaCl containing 0.052 wt.%NaHSO_(3)solution than that in 3.5 wt.%NaCl solutions with or without 0.907 wt.%NaHCO_(3).Charge transfer resistance(Rct)results reveal that alloy after AAT has an enhancement of corrosion resistance compare with that after NAT.With the immersion time increasing,mostly pitting spreads over the surface of the alloy only in NaCl solution,whereas exfoliation corrosion mainly occurs in NaCl solutions containing NaHSO_(3)or NaHCO_(3).

关键词： Al-Zn-Mg alloy Aging treatment Microstructure Corrosion behavior Aggressive ion

Sticking-up Behaviors and Surface Friction of IF Electrogalvanized Sheet Steel in Forming

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International Journal of Minerals,Metallurgy and Materials 1999年第1期13卷 61-63,68页

作者： jiming hu Jixun Wu Yanping Lu Yanrong Zhu (Material Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China) Univ of Science and Technology Beijing Beijing China

X-ray diffraction (XRD), ball-disc friction and wearing machine and draw-bead test were introduced to investigat the strcusture and workability of IF sheet steel electrogalvanized deposits prepared from sulphate solution system. It was shown that the picking-up of the zinc coating on die strengthened with the increasing of friction factor which was originally affected by the coating's structure. Duing forming, (00X) planes (X= 2, 4) preferential orientation of zinc deposits increased, which resulted in enhanc ing the coating's friction behaviors. Therefore, the forming mechanism of electrogalvedzed deposit was demonstrated that both friction and the stricking -up behaviors of the coating are intensified simultaneously and affect each other.

关键词： electrogalvanized deposit forming friction factor

基于混沌反向学习和水波算法改进的白鲸优化算法

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计算机应用研究 2024年第3期41卷 729-735页

作者：王亚辉张虎晨王学兵胡继明李娅华北水利水电大学机械学院郑州450045

针对原始的白鲸算法(beluga whale optimization,BWO)在某些情况下,中后期的探索和开发能力不足、多样性和求解精度降低、容易陷入局部最优等问题,提出一种基于混沌反向学习和水波算法改进的白鲸优化算法(TWBWO),进一步提高白鲸算法的... 详细信息

针对原始的白鲸算法(beluga whale optimization,BWO)在某些情况下,中后期的探索和开发能力不足、多样性和求解精度降低、容易陷入局部最优等问题,提出一种基于混沌反向学习和水波算法改进的白鲸优化算法(TWBWO),进一步提高白鲸算法的计算精度和收敛速度,增强全局搜索和跳出局部最优能力。结合混沌映射和反向学习策略提高种群的质量和多样性,加快收敛速度。引入水波算法(water wave optimization,WWO)的折射操作,避免寻优时轻易陷入局部最优,提高计算精度。实验结果表明,TWBWO算法较之原始算法和其他经典算法在收敛速度和求解精度以及稳定性方面更为优秀,性能和寻优能力更强。

关键词：白鲸优化算法水波算法混沌映射反向学习算法改进

Continuance intention to use the mobile interest-based community: An integrated theoretical model and empirical study

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Chinese Journal of Library and Information Science 2015年第2期 52-68页

作者： jiming hu Jing YU School of Information Management Wuhan University

Purpose： This paper aims at an understanding of factors that influence the continuance intention to use mobile interest-based community applications, with a focus on the impacts of technology acceptance model （TAM） constructs and experiential value. Design/methodology/approach： Taking a hybrid model combining TAM and extended expectation confirmation model （ECM） as foundation, this study integrated experiential value into the research model. A survey method was adopted and the sample was constituted by 347 Chinese undergraduates who were experienced users of mobile interest-based community applications. Structural equation modeling was used to test the research model. Findings： Our findings suggest that 1） key determinants of user satisfaction with mobile interest-based community applications are confirmation, perceived usefulness （PU）, perceived ease of use （PEU） and experiential value. Both satisfaction and PU are directly correlated with continuance intention; 2） PU＇s impact on satisfaction and continuance intention has been confirmed again in this study. Although PEU has no direct impact on satisfaction and continuance intention, it may indirectly affect them via PU; 3） all the perceived experiential values （aesthetics, playfulness, service excellence and return on investment） have a positive influence on satisfaction. Research limitations： We did not examine the effects of individual user differences that may also be important for understanding satisfaction and continuance intention. Practical implications： The study findings can help service providers improve the use of mobile interest-based community applications. Originality/value： Our study contributes to a more systematic understanding of factors that influence continuous use of mobile interest-based community applications.

关键词： Mobile interest-based community Continuance intention Expectationconfirmation model （ECM） Experiential value

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管理科学领域人才基金项目资助效能分析

计量经济学报 2024年第2期4卷 356-367页

作者：吴刚陈中飞刘益宏白洋胡吉明国家自然科学基金委员会北京100085 中国石油大学(华东)经济管理学院青岛266580 武汉大学信息管理学院武汉430072

为贯彻落实习近平总书记关于“提升国家自然科学基金资助效能”的重要指示精神,国家自然科学基金委员会管理科学部组织开展了一系列调研活动,系统分析杰青、优青人才项目的资助效能.设计并发放了556份调查问卷,参与座谈专家233人次.我... 详细信息

为贯彻落实习近平总书记关于“提升国家自然科学基金资助效能”的重要指示精神,国家自然科学基金委员会管理科学部组织开展了一系列调研活动,系统分析杰青、优青人才项目的资助效能.设计并发放了556份调查问卷,参与座谈专家233人次.我们利用变异系数法、双重差分法、自然语言处理等统计方法对调研数据进行量化分析.调研数据统计发现:与优青等人才项目相比,杰青的综合资助效能相对较高,立项后其学术成果、学术影响力均有大幅度提升;杰青优青等人才项目的资助效能存在异质性;从年龄上看,42岁前获杰青资助的学者,其综合资助效能会有更大提升.基于调研分析,提出了人才项目要“强化过程管理与结题管理”等建议.

关键词：管理科学人才基金项目资助效能绩效评价调查问卷

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胰腺巨大脂肪瘤一例

肝胆胰外科杂志 2024年第1期36卷 48-49页

作者：陈波杨倩卢超胡继明王帅长江大学附属荆州医院肝胆胰脾外科湖北荆州434000 长江大学附属荆州医院超声科湖北荆州434000

胰腺脂肪瘤起源于胰腺间叶组织,是由胰腺脂肪细胞异常克隆所致的一种少见的良性肿瘤,而胰腺巨大脂肪瘤则更罕见。本文回顾性分析长江大学附属荆州医院1例胰腺巨大脂肪瘤的诊治经过和体会,现报道如下。病例患者男性,50岁,因“进食后上腹... 详细信息

胰腺脂肪瘤起源于胰腺间叶组织,是由胰腺脂肪细胞异常克隆所致的一种少见的良性肿瘤,而胰腺巨大脂肪瘤则更罕见。本文回顾性分析长江大学附属荆州医院1例胰腺巨大脂肪瘤的诊治经过和体会,现报道如下。病例患者男性,50岁,因“进食后上腹部饱胀不适半年”于2022年3月20日入院,7年前因胆囊结石行腹腔镜胆囊切除术,查体无殊。实验室检查:血常规、肝肾功能、肿瘤标志物等各项指标均正常。

关键词：胰腺脂肪瘤巨大诊断治疗

Simultaneous Fluorescence Detection of Mercury(Ⅱ) and Silver Ions Based on Rhodamine B Isothiocyanate and 5-Carboxyfluorescein-ss DNA Modified Probe

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Wuhan University Journal of Natural Sciences 2016年第6期21卷 499-504页

作者： CHEN Yinran MAO Kang ZHOU Xiaodong SHEN Aiguo hu jiming College of Chemistry and Molecular Sciences Wuhan University

A new fluorescence sensor is developed for simultaneous detection of Hg^2＋ and Ag^＋. During the detection process,Hg^2＋ forms complexes with the fluorescent dye rhodamine B isothiocyanate（RBITC） modified onto the surface of gold nanoparticles（Au NPs）,resulting in RBITC＇s displacement from the surface of Au NPs and the recovery of fluorescence. Meanwhile,Ag^＋ forms ＂C-Ag^＋-C＂ complex with C-rich 5-carboxyfluorescein（FAM）-ss DNA modified onto the surface of Au NPs,which keeps the fluorescent dye FAM close to the Au NPs and results in quench of fluorescence. The experimental results show a wide linear range and a good sensitivity. The limit of detection is 1.06 nmol/L for Ag^＋ and 0.48 nmol/L for Hg^2＋. This detection method is not only easy to operate but also efficient.

关键词： fluorescence sensor simultaneous detection metalions

Activities of Liquid Crystals in Acupuncture Points

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Wuhan University Journal of Natural Sciences 1998年第3期3卷 112-114页

作者： Ma, Wentao Liu, Shaoan Liu, Nai hu, jiming Cao, Lianxin

The theory of Meridians is an important part of Traditional Chinese Medicine. Modern science should play its role in analysing and making clear the mystique of the theory. The relation between the activities of liquid crystals in acupuncture points and the regulative actions of Meridians was studied in this paper. The results showed the intimate intrinsic association between them.

关键词： liquid crystal,acupuncture point,meridian

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拉曼光谱在分析化学中的应用进展

分析化学 2000年第6期28卷 764-767+678-771页

作者：胡军胡继明海口570228 武汉大学分析测试中心!武汉430072 海南省海口市海南大学生物科学技术研究所

评述了各种拉曼技术在分析化学方面的应用进展，涉及到的拉曼光谱技术有常规拉曼光谱、常现共振拉曼光谱、表面增强拉曼光谱、表面增强共振拉曼光谱、傅里叶变换拉曼光谱、傅里叶变换表面增强拉曼光谱及其联用技术。共引用91篇文献。

关键词：拉曼光谱技术评述