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An Intelligent Quality Control Method for Manufacturing Processes Based on a Human–Cyber–Physical Knowledge Graph

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Engineering 2024年第10期41卷 242-260页

作者： Shilong Wang Jinhan yang Bo yang Dong Li Ling Kang State Key Laboratory of Mechanical Transmissions Chongqing UniversityChongqing 400044China College of Mathematics and Statistics Chongqing UniversityChongqing 400044China

Quality management is a constant and significant concern in *** determination of correct solutions for comprehensive problems helps avoid increased backtesting *** study proposes an intelligent quality control method for manufacturing processes based on a human–cyber–physical(HCP)knowledge graph,which is a systematic method that encompasses the following elements:data management and classification based on HCP ternary data,HCP ontology construction,knowledge extraction for constructing an HCP knowledge graph,and comprehensive application of quality control based on HCP *** proposed method implements case retrieval,automatic analysis,and assisted decision making based on an HCP knowledge graph,enabling quality monitoring,inspection,diagnosis,and maintenance strategies for quality *** practical applications,the proposed modular and hierarchical HCP ontology exhibits significant superiority in terms of shareability and reusability of the acquired ***,the HCP knowledge graph deeply integrates the provided HCP data and effectively supports comprehensive decision *** proposed method was implemented in cases involving an automotive production line and a gear manufacturing process,and the effectiveness of the method was verified by the application system ***,the proposed method can be extended to other manufacturing process quality control tasks.

关键词： Quality control Human-cyber-physical ternary data Knowledge graph

Rail-Pillar Net:A 3D Detection Network for Railway Foreign Object Based on LiDAR

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Computers, Materials & Continua 2024年第9期80卷 3819-3833页

作者： Fan Li Shuyao Zhang Jie yang zhicheng Feng zhichao Chen School of Electrical Engineering and Automation Jiangxi University of Science and TechnologyGanzhou341000China Jiangxi Provincial Key Laboratory of Maglev Technology Ganzhou341000China School of Information Engineering Jiangxi University of Science and TechnologyGanzhou341000China

Aiming at the limitations of the existing railway foreign object detection methods based on two-dimensional(2D)images,such as short detection distance,strong influence of environment and lack of distance information,we propose Rail-PillarNet,a three-dimensional(3D)LIDAR(Light Detection and Ranging)railway foreign object detection method based on the improvement of ***,the parallel attention pillar encoder(PAPE)is designed to fully extract the features of the pillars and alleviate the problem of local fine-grained information loss in PointPillars pillars ***,a fine backbone network is designed to improve the feature extraction capability of the network by combining the coding characteristics of LIDAR point cloud feature and residual ***,the initial weight parameters of the model were optimised by the transfer learning training method to further improve *** experimental results on the OSDaR23 dataset show that the average accuracy of Rail-PillarNet reaches 58.51%,which is higher than most mainstream models,and the number of parameters is 5.49 *** with PointPillars,the accuracy of each target is improved by 10.94%,3.53%,16.96%and 19.90%,respectively,and the number of parameters only increases by 0.64M,which achieves a balance between the number of parameters and accuracy.

关键词： Railway foreign object light detection and ranging(LiDAR) 3D object detection PointPillars parallel attention mechanism transfer learning

“双减”背景下促进学科理解的“化学方程式”提质增效教学策略

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化学教育（中英文） 2024年第1期45卷 52-57页

作者：徐云云广州市白云区三元里中学广东广州510405

以大概念统领下的“化学方程式”教学为主题,分析了其中蕴含的促进学生发展的能力要素,研究了学生在理解化学方程式中存在的困难,并据此设计了系统化的学业质量评价及素养评价目标,提出了“双减”背景下促进学生学科理解的提质增效教学... 详细信息

以大概念统领下的“化学方程式”教学为主题,分析了其中蕴含的促进学生发展的能力要素,研究了学生在理解化学方程式中存在的困难,并据此设计了系统化的学业质量评价及素养评价目标,提出了“双减”背景下促进学生学科理解的提质增效教学策略,从真实情境建议和教学活动2方面进行了阐述。

关键词：化学方程式学科理解提质增效大概念能力要素

Transplantation of a pectoralis major flap for the repair of myiasis wounds

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World Journal of Emergency Medicine 2024年第3期15卷 238-240页

作者： Yongkang Cai Yilin He Xiaoxing Tan Tangchun Liu Qingdeng Feng Dongjing Zhang Zhengfei yang Department of Oral and Maxillofacial Surgery Sun Yat-sen Memorial HospitalGuangzhou 510120China Department of Emergency Medicine Sun Yat-sen Memorial HospitalGuangzhou 510120China Chinese Atomic Energy Agency Centre of Excellence on Nuclear Technology Applications for Insect Control Key Laboratory of Tropical Disease Control of the Ministry of EducationSun Yat-sen UniversityGuangzhou 510080China International Atomic Energy Agency Collaborating Centre Sun Yat-sen UniversityGuangzhou 510080China

Myiasis is a disease caused by the invasion and colonization of human tissues and organs by the larvae of *** is manifested by the formation of necrotic tissue in the lesion,the colonization of fly eggs and the spread of fly *** disease is mostly found in areas with poor sanitary *** wound care,necrotic tissue formation,reduced immunity,and frequent contact with flies are risk factors for this *** can be divided into obligate and facultative parasitism,^([1])while some scholars have classified myiasis according to its location.^([2])In addition,some cases of myiasis are secondary to wound infection or poor surgical maintenance.^([3,4]).

关键词： wound immunity myiasis

Composition,function,and timing:exploring the early‑life gut microbiota in piglets for probiotic interventions

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Journal of Animal Science and Biotechnology 2024年第2期15卷 659-678页

作者： Jianping Quan Cineng Xu Donglin Ruan Yong Ye Yibin Qiu Jie Wu Shenping Zhou Menghao Luan Xiang Zhao Yue Chen Danyang Lin Ying Sun Jifei yang Enqin Zheng Gengyuan Cai Zhenfang Wu Jie yang College of Animal Science and National Engineering Research Center for Breeding Swine Industry South China Agricultural UniversityGuangzhouGuangdongPeople’s Republic of China Guangdong Provincial Key Laboratory of Agro‑Animal Genomics and Molecular Breeding South China Agricultural UniversityGuangzhouGuangdongChina yunfu Subcenter of Guangdong Laboratory for Lingnan Modern Agriculture YunfuGuangdongChina National Engineering Research Center for Breeding Swine Industry Wens Foodstuff Group Co.Ltd.YunfuGuangdongPeople’s Republic of China

Background The establishment of a robust gut microbiota in piglets during their early developmental stage holds the potential for long-term advantageous ***,the optimal timeframe for introducing probiotics to achieve this outcome remains *** In the context of this investigation,we conducted a longitudinal assessment of the fecal microbiota of 63 piglets at three distinct pre-weaning time ***,we gathered vaginal and fecal samples from 23 *** 16S rRNA gene and metagenomic sequencing methodologies,we conducted a comprehensive analysis of the fluctuation patterns in microbial composition,functional capacity,interaction networks,and colonization resistance within the gut microbiota of *** the piglets progressed in age,discernible modifications in intestinal microbial diversity,composition,and function were observed.A source-tracking analysis unveiled the pivotal role of fecal and vaginal microbiota derived from sows in populating the gut microbiota of neonatal *** D21,the microbial interaction network displayed a more concise and efficient configuration,accompanied by enhanced colonization resistance relative to the other two time ***,we identified three strains of Ruminococcus *** D10 as potential candidates for improving piglets’weight gain during the weaning *** The findings of this study propose that D10 represents the most opportune juncture for the introduction of external probiotic interventions during the early stages of piglet *** investigation augments our comprehension of the microbiota dynamics in early-life of piglets and offers valuable insights for guiding forthcoming probiotic interventions.

关键词： Colonization resistance Intestinal microbiota Piglet Weaning Weight gain

基于Moldflow的拉链链牙成型工艺参数优化

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塑料 2024年第4期53卷 145-150页

作者：胡茗朝张莉杨志曹淼龙浙江科技学院机械与能源工程学院浙江杭州310023 台州学院智能制造学院浙江台州318000 浙江伟星实业发展股份有限公司浙江临海317024

针对拉链链牙注塑工艺参数对成型质量影响较大的问题,分析了拉链链牙的结构特征,利用Moldflow软件对拉链链牙进行模流仿真分析,发现,翘曲变形是影响链牙成型的重要因素。以链牙X方向的最大收缩变形为优化目标,注射时间、熔体温度、保压... 详细信息

针对拉链链牙注塑工艺参数对成型质量影响较大的问题,分析了拉链链牙的结构特征,利用Moldflow软件对拉链链牙进行模流仿真分析,发现,翘曲变形是影响链牙成型的重要因素。以链牙X方向的最大收缩变形为优化目标,注射时间、熔体温度、保压时间、模具温度为试验因素,进行4因素4水平正交试验,对试验结果进行经极差与方差分析,得到上述工艺参数与收缩变形量的影响关系,并选出一组最优的工艺参数组合为注射时间为2 s,熔体温度为195℃,保压时间为2.5 s,模具温度为70℃。经仿真验证,优化后,X方向最大收缩变形降低了8.09%。通过实验验证,优化工艺参数可有效改善链牙注塑成型质量。

关键词：拉链模流仿真翘曲变形正交试验收缩变形

Mechanical Janus lattice with plug-switch orientation

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Theoretical & Applied Mechanics Letters 2024年第1期14卷 23-26页

作者： Yupei Zhang Jiawei Zhong Zhengcai Zhao Ruiyu Bai Yanqi Yin yang Yu Bo Li State Key Laboratory for Manufacturing System EngineeringShaanxi Key Laboratory of Intelligent Robots School of Mechanical Engineering Xi’an Jiaotong UniversityXi’an 710049China Qian Xuesen Honors College Xi’an Jiaotong UniversityXi’an 710049China

In recent years,materials with asymmetric mechanical response properties(mechanical Janus materials)have been found possess numerous potential applications,*** absorption and vibration *** this study,we propose a novel mechanical Janus lattice whose asymmetric mechanical response can be switched in orientation by a *** finite element analysis and experimental verification,this lattice exhibits asymmetric displacement responses to symmetric ***,with such a plug structure inside,individual lattices can switch the orientation of asymmetry and thus achieve reprogrammable design of a mechanical structure with chained *** reprogrammable asymmetry of this material will offer multiple functions in design of mechanical metamaterials.

关键词： Janus Non-reciprocity Programmability Mechanical metamaterial

The Mn/Yb/Er triple-doped CeO_(2) nanozyme with enhanced oxidase-like activity for highly sensitive ratiometric detection of nitrite

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Chinese Chemical Letters 2024年第6期35卷 491-495页

作者： Simin Wei Yaqing yang Junjie Li Jialin Wang Jinlu Tang Ningning Wang Zhaohui Li College of Chemistry Institute of Analytical Chemistry for Life ScienceHenan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical ApplicationsZhengzhou UniversityZhengzhou 450001China School of Basic Medical Sciences Zhengzhou UniversityZhengzhou 450001China

Long-term excessive intake of nitrite(NO_(2)^(-))poses a great threat to human health,needing a simple and fast method to detect NO_(2)-in ***,via a simple and feasible strategy,Mn/Yb/Er triple-doped CeO_(2) nanozyme(Mn/Yb/Er/CeO_(2))was synthesized for highly sensitive ratiometric detection of *** doping Mn,Yb,Er into CeO_(2) lattice structure,Mn/Yb/Er/CeO_(2) nanozyme showed enhanced oxidase-like activity,obtaining a higher density of oxygen vacancy and a higher ratio of Ce^(3+)to Ce~(4+)than that of CeO_(2).The 3,3,5,5-tetramethylbenzidine(TMB)can be effectively oxidized by Mn/Yb/Er/CeO_(2) to produce the oxidized TMB(ox TMB),showing a significant absorption signal at 652 ***,nitrite can react with ox TMB to produce yellow diazotized ox TMB,which is accompanied by an elevated absorption signal at 445 nm and a decreased absorption signal at 652 ***,based on the oxidase-mimetic activity of Mn/Yb/Er/CeO_(2) and the diazotization reaction between NO_(2)^(-)and ox TMB,a ratiometric colorimetric assay was established for NO_(2)^(-)detection in ***,by integrating Mn/Yb/Er/CeO_(2) with a smartphone,a colorimetric smartphone-sensing platform was successfully fabricated for visualization and quantitative detection of NO_(2)^(-).Notably,this two-detection mode showed excellent sensitivity,selectivity,reliability and practicability in monitoring the NO_(2)^(-)in real samples,impling its great potential for food safety.

关键词： Mn/Yb/Er/CeO_(2) nanozyme Oxidase-like activity Nitrite Ratiometric detection Two-detection mode

Structure of a histone hexamer bound by the chaperone domains of SPT16 and MCM2

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Science China(Life Sciences) 2024年第6期67卷 1305-1307页

作者： Songlin Gan Wen-Si yang Liting Wei zhiguo Zhang Rui-Ming Xu Key Laboratory of Epigenetic Regulation and Intervention Institute of BiophysicsChinese Academy of SciencesBeijing 100101China School of Life Sciences University of Chinese Academy of SciencesBeijing 100049China Institute for Cancer Genetics Department of Pediatrics and Department of Genetics and DevelopmentColumbia University Irving Medical CenterNew York 10032USA School of Life Science Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China

Dear Editor,The passage of DNA replication forks during eukaryotic cell division disrupts the nucleosomes they encounter,and de novo assembly of nucleosomes onto replicated DNA must take place to restore chromatin ***... 详细信息

关键词： structure nucleosome passage