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Microstructural evolution during the progressive transformation-induced plasticity effect in a Fe-0.1C-5Mnmedium manganese steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 369-379页

作者： mei Zhang Wenhao Li Yangfei Chen Yang jiang Xiaofei Guo Han Dong School of Materials Science and Engineering Shanghai UniversityShanghai 200444China State Key Laboratory of Advanced Special Steel Shanghai UniversityShanghai 200444China

The microstructural evolution of a cold-rolled and intercritical annealed medium-Mn steel(Fe-0.10C-5Mn)was investigated during uniaxial tensile ***-situ observations under scanning electron microscopy,transmission electron microscopy,and X-ray diffraction analysis were conducted to characterize the progressive transformation-induced plasticity process and associated fracture initiation *** findings were discussed with the local strain measurements via digital image *** results indicated that Lüders band formation in the steel was limited to 1.5%strain,which was mainly due to the early-stage martensitic phase transformation of a very small amount of the less stable large-sized retained austenite(RA),which led to localized stress concentrations and strain hardening and further retardation of *** small-sized RA exhibited high stability and progressively transformed into martensite and contributed to a stably extended Portevin-Le Chatelier *** volume fraction of RA gradually decreased from 26.8%to 8.2%prior to *** the late deformation stage,fracture initiation primarily occurred at the austenite/martensite and ferrite/martensite interfaces and the ferrite phase.

关键词： medium-Mn steel retained austenite progressive transformation-induced plasticity effect local strain fracture initiation

心理紧张度和心理韧性对飞行员工作绩效的影响——以通用航空飞行员为例

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上海大学学报（社会科学版） 2017年第2期34卷 134-140页

作者：张梅廖江群彭凯平齐学梅清华大学社会科学学院北京100084 中航通用飞机有限责任公司人力资源部广东珠海519030

飞行员是一种高压和高风险性的职业,研究飞行员的心理状态对他们的工作绩效的影响非常重要。本研究通过采用多层线性回归模型,探讨心理韧性和心理紧张度对通用航空飞行员工作绩效的影响。研究发现,心理韧性和心理紧张度对飞行绩效存在... 详细信息

飞行员是一种高压和高风险性的职业,研究飞行员的心理状态对他们的工作绩效的影响非常重要。本研究通过采用多层线性回归模型,探讨心理韧性和心理紧张度对通用航空飞行员工作绩效的影响。研究发现,心理韧性和心理紧张度对飞行绩效存在交互作用,共同影响飞行员的工作绩效。该结果在理论和应用上对飞行员的选拔、培养及提升工作绩效等方面具有重要的意义。

关键词：飞行员心理韧性心理紧张度工作绩效

Multi-model ensemble learning for battery state-of-health estimation:Recent advances and perspectives

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Journal of Energy Chemistry 2025年第1期100卷 739-759页

作者： Chuanping Lin Jun Xu Delong jiang Jiayang Hou Ying Liang Zhongyue Zou Xuesong mei State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University Shaanxi Key Laboratory of Intelligent Robots School of Mechanical Engineering Xi'an Jiaotong University Department of Electrical Engineering and Automation Luoyang Institute of Science and Technology School of Mechanical Engineering Hangzhou Dianzi University

The burgeoning market for lithium-ion batteries has stimulated a growing need for more reliable battery performance monitoring. Accurate state-of-health(SOH) estimation is critical for ensuring battery operational performance. Despite numerous data-driven methods reported in existing research for battery SOH estimation, these methods often exhibit inconsistent performance across different application scenarios. To address this issue and overcome the performance limitations of individual data-driven models,integrating multiple models for SOH estimation has received considerable attention. Ensemble learning(EL) typically leverages the strengths of multiple base models to achieve more robust and accurate outputs. However, the lack of a clear review of current research hinders the further development of ensemble methods in SOH estimation. Therefore, this paper comprehensively reviews multi-model ensemble learning methods for battery SOH estimation. First, existing ensemble methods are systematically categorized into 6 classes based on their combination strategies. Different realizations and underlying connections are meticulously analyzed for each category of EL methods, highlighting distinctions, innovations, and typical applications. Subsequently, these ensemble methods are comprehensively compared in terms of base models, combination strategies, and publication trends. Evaluations across 6 dimensions underscore the outstanding performance of stacking-based ensemble methods. Following this, these ensemble methods are further inspected from the perspectives of weighted ensemble and diversity, aiming to inspire potential approaches for enhancing ensemble performance. Moreover, addressing challenges such as base model selection, measuring model robustness and uncertainty, and interpretability of ensemble models in practical applications is emphasized. Finally, future research prospects are outlined, specifically noting that deep learning ensemble is poised to advance ens

关键词： Lithium-ion battery State-of-health estimation Data-driven Machine learning Ensemble learning Ensemble diversity

某大型殡仪馆消毒卫生现状及干预措施效果评价

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中国消毒学杂志 2016年第9期33卷 827-829页

作者：周雪媚付慧群姜思朋王永阔陈霜玲李玉光民政部一零一研究所北京100070

目的了解殡仪场所内的消毒卫生状况及主要影响因素,探讨适用于殡仪场所的有效干预措施。方法采用问卷调查和现场采样检测相结合的方法对国内某大型殡仪馆的消毒卫生状况进行调查、检测和分析,提出相应的干预措施。结果通过干预后,该殡... 详细信息

目的了解殡仪场所内的消毒卫生状况及主要影响因素,探讨适用于殡仪场所的有效干预措施。方法采用问卷调查和现场采样检测相结合的方法对国内某大型殡仪馆的消毒卫生状况进行调查、检测和分析,提出相应的干预措施。结果通过干预后,该殡仪馆内消毒卫生状况得到显著改善。结论提高殡仪人员的消毒卫生防护知识、强化卫生防护意识、改善消毒卫生硬件环境和加强殡仪馆内日常消毒管理等方式能有效改善殡仪场所消毒卫生状况,经验值得推广。

关键词：殡仪馆消毒卫生干预措施

Analysis of the anti-T2DM components in dichloromethane fraction of Schisandra sphenanthera and its mechanism

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Traditional Medicine Research 2025年第1期10卷 27-43页

作者： Shi-Bo Feng Hai-Hui jiang Hui-Li Kang Yi jiang Hua-Wei Zhang Xiao-mei Song Yu-Ze Li Wen-Li Huang Dong-Dong Zhang Chong Deng School of Pharmacy Shaanxi University of Chinese MedicineXianyang 712046China School of Pharmacy and Shaanxi Qinling Application Development and Engineering Center of Chinese Herbal Medicine Shaanxi University of Chinese MedicineXianyang 712046China Key Laboratory for Research and Development of“Qin Medicine”of Shaanxi Administration of Traditional Chinese Medicine Xianyang 712046China Shaanxi Key Laboratory of Research and Application of“Taibai Qi Yao” Xianyang 712046China

Background:The type 2 diabetes mellitus(T2DM)pharmacodynamic study of various parts of Schisandra sphenanthera was conducted in the previous stage,and it was found that dichloromethane extracted part(SDP)had a significant hypoglycemic ***,the components of SDP were analyzed,and the specific mechanism of its anti-T2DM was ***:We used a high-fat,high-sugar diet in combination with streptozotocin to induce a T2DM rat model,and the model rats were divided into two groups according to body weight and blood ***,oral glucose tolerance test,fasting blood glucose,low density lipoprotein cholesterol,superoxide dismutase,insulin,glycated hemoglobin,total cholesterol,nonesterified free fatty acids,alanine aminotransferase,high-density lipoprotein cholesterol,aspartate aminotransferase,malondialdehyde,and glutathione peroxidase were measured,organ indices were calculated,and pathological sections of pancreas and liver were *** 16S rRNA V3–V4 region of intestinal flora was sequenced to explore the effect of SDP on biochemical indicators and intestinal *** on the above indicators,the anti-T2DM mechanism of SDP in Schisandra sphenanthera was ***:After six weeks of administration,the biochemical indices of diabetic rats were diminished compared to the control *** SDP could significantly increase the gut microbialα-diversity index,resulting in significant changes in the flora of T2DM rats,with increased richness and diversity,reduced harmful flora,and significantly back-regulated the levels of acetic acid,propionic acid,and butyric ***:SDP can improve the symptoms associated with elevated blood glucose,dyslipidemia,elevated fasting insulin levels,and damaged glucose tolerance in *** against T2DM may be through the control of intestinal flora to normalize and exert anti-diabetic effect;its main active components may be lignans and terpenoids.

关键词： Schisandra sphenanthera T2DM intestinal flora HPLC

Non-isolated stacked bidirectional soft-switching DC-DC converter with PWM plus phase-shift control scheme

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Journal of Modern Power Systems and Clean Energy 2017年第4期5卷 631-641页

作者： Ye mei qun jiang Heya YANG Wuhua LI Xiangning HE Shun LI College of Electrical Engineering Zhejiang UniversityHangzhou 310027China State Grid Zhejiang Electric Power Research Institute Hangzhou 310027China

In this paper, a non-isolated stacked bidirectional DC-DC converter with zero-voltage-switching(ZVS) is introduced for the high step-up/step-down conversion systems. The extremely narrow turn-on and/or turn-off duty cycle existing in the conventional bidirectional buck-boost converters can be extended due to the stacked module configuration for large voltage conversion ratio applications. Furthermore, the switch voltage stress is halved because of the series connection of half bridge modules. The PWM plus phase-shift control strategy is employed, where the duty cycle is adopted to regulate the voltages between the input and output sides and the phaseshift angle is applied to achieve the power flow *** decoupled control scheme can not only realize seamless bidirectional transition operation, but also achieve adaptive voltage balance for the power switches. In addition, ZVS soft-switching operation for all active switches is realized to minimize the switching losses. Finally, a prototype of 1 kW operating at 100 kHz is built and tested to demonstrate the effectiveness of the proposed converter and the control strategy.

关键词： Bidirectional DC-DC converter PWM plus phase-shift control(PPS) Zero voltage switching(ZVS) Large voltage conversion ratio Flexible power flow regulation

Residual Closeness of Graphs with Given Parameters

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Journal of the Operations Research Society of China 2023年第4期11卷 839-856页

作者： mei-qun Cheng Bo Zhou School of Mathematical Sciences South China Normal UniversityGuangzhou510631GuangdongChina

Robustness of the network topology is a key aspect in the design of computer networks. Residual closeness is a new graph-theoretic concept defined as a measure of network robustness due to the failure of individual vertices. We identify those graphs with maximum residual closeness among connected graphs with fixed connectivity, edge connectivity and bipartiteness, respectively.

关键词： Residual closeness Connectivity Edge connectivity Bipartiteness

An angiosperm NLR Atlas reveals that NLR gene reduction is associated with ecological specialization and signal transduction component deletion

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Molecular Plant 2021年第12期14卷 2015-2031页

作者： Yang Liu Zhen Zeng Yan-mei Zhang Qian Li Xing-mei jiang Zhen jiang Ji-Hong Tang Dijun Chen Qiang Wang Jian-qun Chen Zhu-Qing Shao State Key Laboratory of Pharmaceutical Biotechnology School of Life SciencesNanjing UniversityNanjing 210023China jiangsu Key Laboratory for the Research and Utilization of Plant Resources Institute of BotanyJiangsu Province and Chinese Academy of SciencesNanjing 210014China

Nucleotide-binding leucine-rich-repeat(NLR)genes comprise the largest family of plant disease-resis-tance *** NLR genes are phylogenetically divided into the TNL,CNL,and RNL *** copy numbers and subclass composition vary tremendously across angiosperm ***,the evolutionary associations between genomic NLR content and ecological adaptation,or between NLR content and signal transduction components,are poorly characterized because of limited genome *** this study,we established an angiosperm NLR atlas(ANNA,https://***/ANNA/)that includes NLR genes from over 300 angiosperm *** ANNA,we revealed that NLR copy numbers differ up to 66-fold among closely related species owing to rapid gene loss and ***,NLR contraction was associated with adaptations to aquatic,parasitic,and carnivorous *** convergent NLR reduction in aquatic plants resembles the lack of NLR expansion during the long-term evolution of green algae before the colonization of land.A co-evolutionary pattern between NLR subclasses and plant immune pathway components was also identified,suggesting that immune pathway deficiencies may drive TNL ***,we identified a conserved TNL lineage that may function independently of the EDS1-SAG101-NRG1 ***,these findings provide new insights into the evolution of NLR genes in the context of ecological adaptation and genome content variation.

关键词： NLR genes plant disease resistance EDS1 gene family gene family evolution angiosperms

Superinfective Hepatitis E Virus Infection Aggravates Hepatocytes Injury in Chronic Hepatitis B

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Current Medical Science 2019年第5期39卷 719-726页

作者： Semvua Bukheti Kilonzo Yong-Ii WANG qun-qun jiang Wen-yu WU Peng WANG Qin NING mei-fang HAN Department and Institute of Infectious Disease Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Hepatitis E virus(HEV)infection is a major cause of morbidity in endemic *** consequences among chronic hepatitis B(CHB)patients have been *** aim of this study was to assess the impact of superinfective HEV infection(acute and past)on virological and clinical features of patients with CHB ***,biochemical,virological and immunological data of 153 CHB patients including 98 with hepatitis B virus(HBV)monoinfection and 55 with HBV-HEV superinfection with both HEV and HBV infection was retrospectively investigated and analyzed in this study conducted in Wuhan,*** overall anti-HEV IgG seroprevalence was found to be 35.9% in CHB ***-HEV superinfection patients showed significantly higher rate of complications(ascites,hepato-renal syndrome&encephalopathy)(all with P=0.04),cirrhosis(P<0.001)and acute-on-chronic liver failure(P<0.001)than HBV monoinfection *** also displayed elevated ALTs(P<0.001)and total serum bilirubin(P<0.001)with diminished albumin(P<0.001)and HBV viral load(P<0.001).Cytokines assay revealed increased expression of IL-6(P=0.02),IL-10(P=0.009)and TNF-α(P=0.003)in HBVHEV superinfection patients compared to HBV monoinfection *** study demonstrated that HEV superinfection in CHB patients was associated with progressive clinical manifestation,which is likely due to the enhanced expression of cytokines related with hepatocytes *** was also associated with repressed HBV replication,but the underlying mechanism requires further investigation.

关键词： hepatitis E hepatitis B superinfection liver failure replication