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轨道装备制造业质量管理数字化探索

标准科学 2024年第1期 126-130页

作者：李彦林董绪琪李艳中车青岛四方机车车辆股份有限公司

轨道装备制造业面临着供应链协同管控难度大、生产过程质量控制复杂、产品质量追溯缺乏支撑等挑战。如何通过数字化技术来推动轨道装备制造业质量管理转型,是增强企业高质量发展和提升核心竞争力的重要手段。本文以青岛中车四方机车车... 详细信息

轨道装备制造业面临着供应链协同管控难度大、生产过程质量控制复杂、产品质量追溯缺乏支撑等挑战。如何通过数字化技术来推动轨道装备制造业质量管理转型,是增强企业高质量发展和提升核心竞争力的重要手段。本文以青岛中车四方机车车辆股份有限公司为例,就轨道装备制造业质量管理数字化所面临的问题和主要的做法进行了探索。研究从规范数据结构、生产质量控制与运维、质量检测检验和数据赋能4个方面展开,探讨了质量管理数字化的主要方向和做法,为轨道装备制造业质量管理数字化提供了借鉴。

关键词：质量管理数字化质量追溯

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Experimental investigation on weak shock wave mitigation characteristics of flexible polyurethane foam and polyurea

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Defence Technology（防务技术） 2024年第1期31卷 179-191页

作者： Shiyu Jia Cheng Wang Wenlong xu dong Ma Fangfang qi State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China Institute for Advanced Technology Shandong UniversityJinan250061China

In recent years,explosion shock wave has been considered as a signature injury of the current military *** strong shock wave is lethal to the human body,weak shock wave can cause many more lasting *** investigate the protection ability and characteristics of flexible materials and structures under weak shock wave loading,the blast wave produced by TNT explosive is loaded on the polyurethane foam with the density of 200.0 kg/m3(F-200)and 400.0 kg/m3(F-400),polyurea with the density of 1100.0 kg/m^(3)(P-1100)and structures composed of the two materials,which are intended for individual *** results indicate that the shock wave is attenuated to weak pressure disturbance after interacting with the flexible materials which are not *** shock wave protective capability of single-layer materials is dependent on their thickness,density and microscopic *** overpressure,maximum pressure rise rate and impulse of transmitted wave decrease exponentially with increase in sample *** the same thickness,F-400 provides better protective capability than F-200 while P-1100 shows the best protective capability among the three *** this study,as the materials are not destroyed,F-200 with a thickness more than10.0 mm,F-400 with a thickness more than 4.0 mm,and P-1100 with a thickness more than 1.0 mm can attenuate the overpressure amplitude more than 90.0%.Further,multi-layer flexible composites are *** layer layouts of designed structures and layer thickness of the single-layer materials can affect the protective *** the research range,the structure in which polyurea is placed on the impact side shows the optimal shock wave protective performance,and the thicknesses of polyurea and polyurethane foam are 1.0 mm and 4.0 mm *** overpressure attenuation rate reached maximum value of 93.3%and impulse attenuation capacity of this structure are better than those of s

关键词： Free-field explosion Weak shock wave mitigation Polyurea Polyurethane foam Multi-layered composites

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Lightweight innovation ADIs help development of renewable energy and new technology industries in China

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China Foundry 2024年第5期21卷 507-515页

作者： qi-dong Yan xu-dong Gong Wen-bang Gong Jin-cheng Liu ADI Committee of China Foundry Association Beijing 100000China Yuzhou Henglilai New Materials Co. Ltd.Xuchang 452570HenanChina Kunshan Changjian Foundry Industry Co.Ltd. Kunshan 215311JiangsuChina School of Mechanical Engineering and Automation Wuhan Textile UniversityWuhan 430200China WFO Ferrous Metals Commission Shenyang 110022China

The world is undergoing profound changes in energy and *** are vigorously developing new sustainable energy sources and *** energy sources encompass various technologies such as wind turbines,solar energy,nuclear energy,and ***,emerging technology fields include new energy vehicles,robots,and artificial intelligence devices,among *** renewable energy industries and implementation of new technologies necessitate the development and adoption of new equipment and *** ductile iron(ADI)is renowned for its unique microstructure and superior *** utilizing ADI,lightweight and innovative castings can be designed to not only reduce weight but also save energy and decrease *** importantly,these castings enhance the efficiency and reliability of new energy equipment and emerging technology *** paper describes the development,applications,and future prospects of lightweight and innovative ADI castings within sectors such as solar photovoltaic(PV),wind power generation,industry robots,and trucks in China.

关键词： lightweight ADI renewable energy emission reduction

Innovative mesenchymal stem cell treatments for fatty liver disease

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World Journal of Stem Cells 2024年第9期16卷 846-853页

作者： Fei-qiong Gao Jia-qi Zhu xu-dong Feng Department of Endocrinology Affiliated Hangzhou First People’s HospitalSchool of MedicineWestlake UniversityHangzhou 310003Zhejiang ProvinceChina Laboratory Medicine Center Department of Clinical LaboratoryZhejiang Provincial People’s HospitalPeople’s Hospital of Hangzhou Medical CollegeHangzhou 310014Zhejiang ProvinceChina Department of Clinical Laboratory Ningbo Medical Center Lihuili HospitalAffiliated Lihuili Hospital of Ningbo UniversityNingbo 315000Zhejiang ProvinceChina

The incidence of non-alcoholic fatty liver disease(NAFLD)and alcohol-associated liver disease(ALD)is increasing year by year due to changes in the contemporary environment and dietary structure,and is an important public health problem *** is an urgent need to continuously improve the understanding of their disease mechanisms and develop novel therapeutic *** stem cells(MSCs)have shown promise as a potential therapeutic strategy in therapeutic studies of NAFLD and *** and ALD have different triggers and their specific mechanisms of disease progression are different,but both involve disease processes such as hepatocellular steatosis and potential fibrosis,cirrhosis,and even hepatocellular *** have metabolic regulatory,anti-apoptotic,antioxidant,and immunomodulatory effects that together promote liver injury repair and functional recovery,and have demonstrated positive results in preclinical *** editorial is a continuum of Jiang et al’s review focusing on the advantages and limitations of MSCs and their derivatives as therapeutics for NAFLD and *** detail how MSCs attenuate the progression of NAFLD by modulating molecular pathways involved in glucolipid metabolism,inflammation,oxidative stress,endoplasmic reticulum stress,and *** on recent advances,we discuss MSCs and their derivatives as therapeutic strategies for NAFLD and ALD,providing useful information for their clinical application.

关键词： Alcohol-associated liver disease Non-alcoholic fatty liver disease Mesenchymal stem cells Cell therapy Inflammation

Hydrogen-rich surface of MoC catalysts for efficient CO_(2) hydrogenation induced by a coupled hydrogen donator

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Nano Research 2024年第8期17卷 7762-7767页

作者： dong xu Si-Yuan Xia qi-Yuan Li Jie-Sheng Chen Xin-Hao Li School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Jiao Tong UniversityShanghai 200240China

Direct CO_(2) hydrogenation offers an important strategy for promoting the global carbon balance,but high thermodynamic and kinetic stability of CO_(2) has restricted its applicability to only a handful of industrial ***,we introduce a proof-of-concept application of the electron-rich Pt surface to promote hydrogen donation for electron-rich MoC particles acting as hydrogen acceptors,thereby constructing hydrogen-rich surface of MoC active ***,the formed hydrogen-rich and electronrich surface could greatly decrease reaction activation energy to boost the efficient CO_(2) hydrogenation into formic acid over the MoC *** optimized MoC@NC/Pt-0.1(NC:nitrogen-doped carbon)catalyst exhibits a high turnover frequency(TOF)value of 1.2 h^(−1) at a lower temperature of 60℃and a TOF of 24.2 h^(−1) under standard reaction conditions widely used in the literature,exceeding 7 times of MoC@NC catalyst and surpassing the benchmark classical non-noble metal active center-based heterogeneous catalyst.

关键词： electron-rich Pt nanoparticles hydrogen donation hydrogen-rich MoC nanoparticles CO_(2) hydrogenation formic acid

Mold breakout prediction based on computer vision and machine learning

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Journal of Iron and Steel Research International 2024年第8期31卷 1947-1959页

作者： Yan-yu Wang qi-can Wang Yong-chang Zhang Yong-hui Cheng Man Yao xu-dong Wang School of Materials Science and Engineering Dalian University of TechnologyDalian 116024LiaoningChina Key Laboratory of Solidification Control and Digital Preparation Technology Dalian University of TechnologyDalian 116024LiaoningChina

Breakout is the most serious production accident in continuous casting and must be detected and predicted by stable and reliable *** sticking region,which forms on the local copper plate and expanded into a"V"shape,is the typical precursor of ***,computer vision technology was exploited to visualize the temperature change rate of the copper plate based on the temperature signals from thermocouples;then,the static and dynamic features of the abnormal sticking region were ***,logistic regression and Adaboost models were used to study and identify these features,resulting in the development of a mold breakout prediction model based on computer vision and machine *** test results demonstrate that the proposed model can effectively distinguish anomalous temperature patterns and considerably reduce false alarms without any missing *** a result,the proposed method could offer valuable insights into the realm of abnormality detection and prediction during continuous casting process.

关键词： Abnormality detection Image processing Adaboost Logistic regression Continuous casting

Exploring Attentive Siamese LSTM for Low-Resource Text Plagiarism Detection

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Data Intelligence 2024年第2期6卷 488-503页

作者： Wei Bao Jian dong Yang xu Yuanyuan Yang Xiaoke qi China Electronics Standardization Institute Beijing 100007China Beihang University Beijing 100191China Bohai University Jinzhou 121013China School of Information Management for Law China University of Political Science and LawBeijing 102249China

Low-resource text plagiarism detection faces a significant challenge due to the limited availability of labeled data for *** task requires the development of sophisticated algorithms capable of identifying similarities and differences in texts,particularly in the realm of semantic rewriting and translation-based plagiarism *** this paper,we present an enhanced attentive Siamese Long Short-Term Memory(LSTM)network designed for Tibetan-Chinese plagiarism *** approach begins with the introduction of translation-based data augmentation,aimed at expanding the bilingual training ***,we propose a pre-detection method leveraging abstract document vectors to enhance detection ***,we introduce an improved attentive Siamese LSTM network tailored for Tibetan-Chinese plagiarism *** conduct comprehensive experiments to showcase the effectiveness of our proposed plagiarism detection framework.

关键词： Text plagiarism detection Low resource Siamese Long Short-Term Memory Tibetan-Chinese

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Serum metabolic profiling implicates mTOR activation and insulin resistance in the development of pulmonary hypertension in a rat model of pressure overload-induced heart failure

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Genes & Diseases 2024年第5期11卷 109-112页

作者： qi Zhou Chao Tang Xinke xu Junhao Hu Shengsen Yao Bo dong Xiaojing Wu Department of Cardiology of the Fifth Affiliated Hospital of Southern Medical University GuangzhouGuangdong 510999China Cardiovascular Department of Shenzhen University General Hospital ShenzhenGuangdong 518055China Cardiovascular Department of Chongqing Medical University Second Affiliated Hospital Chongqing 400010China

Pulmonary hypertension(PH)due to left heart failure(HF)accounts for approximately half of PH cases *** has been demonstrated that PH is a frequent complication of HF but is difficult to recognize in its early stage because it is characterized by nonspecific symptoms including shortness of breath and decreased tolerance of ***,nearly all multicentric clinical trials targeting pulmonary circulation in PH-HF have reported negative results.1 Thus,there are no effective methods for diagnosing early PH,and the current treatment of PH-HF is insufficient.

关键词： hypertension Serum resistance

Decision and Coordination in a Closed-Loop Supply Chain with Product Recycling Under Different Low-Carbon Regulations

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Journal of the Operations Research Society of China 2024年第3期12卷 695-728页

作者： qian-dong dong Hai-Wen xu School of Management and Engineering Nanjing UniversityNanjing210093JiangsuChina School of Science Civil Aviation Flight University of ChinaGuanghan618307SichuanChina

The implementation of recycling activity is of great significance to closed-loop supply chain ***’environmental awareness and governmental subsidy are considered in the two-echelon closed-loop supply *** types of decision-making structures are proposed under different carbon emission *** subsidy sharing mechanism is designed to resolve the channel members’conflict caused by double *** paper provides insight into the effect of environmental awareness and government subsidy under different low-carbon regulations on the supply chain benefit and social welfare via the game *** analysis results display that the government subsidy and subsidy sharing mechanism are profitably beneficial to the whole supply chain and social ***,a noteworthy result reveals that social welfare is not always directly proportional to consumers’environmental *** welfare decreases slightly with the increase in consumers’environmental awareness when consumers’environmental awareness is ***,social welfare will be significantly improved when consumers’environmental awareness increases beyond a certain threshold.

关键词： Closed-loop supply chain Recycling Coordination Social welfare Game theory Carbon emissions