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Anomaly monitoring and early warning of electric moped charging device with infrared image

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Optoelectronics Letters 2025年第3期 136-141页

作者： LI Jiamin han Bo JIANG Mingshun School of Control Science and Engineering Shandong University

Potential high-temperature risks exist in heat-prone components of electric moped charging devices, such as sockets,interfaces, and controllers. Traditional detection methods have limitations in terms of real-time performance and monitoring scope. To address this, a temperature detection method based on infrared image processing has been proposed:utilizing the median filtering algorithm to denoise the original infrared image, then applying an image segmentation algorithm to divide the image.

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Genomic and transcriptomic insights into cytochrome P450 monooxygenase genes involved in nicosulfuron tolerance in maize(Zea mays L.)

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Journal of Integrative Agriculture 2018年第8期17卷 1790-1799页

作者： LIU xiao-min XU Xian LI bing-hua YAO xiao-xia ZhanG Huan-huan WANG Gui-qi han Yu-jun Institute of Cereal and Oil Crops Hebei Academy of Agriculture and Forestry Sciences Xingtai Academy of Agriculture Sciences College of Agriculture Northeast Agricultural University

Postemergence application of nicosulfuron for weed control in maize fields can cause great damage to certain maize inbred lines and hybrids. Two maize genotypes, tolerant inbred(HBR) and sensitive inbred(HBS), were found to significantly differ in their phenotypic responses to nicosulfuron, with the EC50(50% effective concentration) values differed statistically(763.6 and 5.9 g a.i. ha–1, respectively). Pre-treatment with malathion, a known cytochrome P450 inhibitor, increased nicosulfuron injury in both HBR and HBS. Our results support the hypothesis that nicosulfuron selectivity in maize is associated with cytochrome P450 metabolism. Further analysis of the maize genome resulted in the identification of 314 full length cytochrome P450 monooxygenase(CYP) genes. These genes were classified into 2 types, 10 clans and 44 families. The CYP71 clan was represented by all A-type genes(168) belonging to 17 families. Nine clans possessed 27 families containing 146 non-A-type genes. The consensus sequences of the heme-binding regions of A-type and non-A-type CYP proteins are ‘PFGXGRRXCPG’ and ‘FXXGPRXCXG’, respectively. Illumina transcriptome sequence results showed that there were 53 differentially expressed CYP genes on the basis of high variation in expression between HBS and HBR, nicosulfuron-treated and untreated samples. These genes may contribute to nicosulfuron tolerance in maize. A hierarchical clustering analysis obtained four main clusters named C1 to C4 in which 4, 15, 21, and 13 CYP genes were found in each respective cluster. The expression patterns of some CYP genes were confirmed by RT-q PCR analysis. The research will improve our understanding of the function of maize cytochrome P450 in herbicide metabolism.

关键词： cytochrome P450 Zea mays L. malathion nicosulfuron herbicide metabolism

Numerical simulation on the multiple planar fracture propagation with perforation plugging in horizontal wells

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Petroleum Science 2022年第5期19卷 2253-2267页

作者： Ming-Hui Li Fu-Jian Zhou Bo Wang xiao-Dong Hu Dao-bing Wang xiao-Ying Zhuang Shao-Bo han Guo-Peng Huang State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum-BeijingBeijing102249China Unconventional Oil and Gas Research Institute China University of Petroleum-BeijingBeijing102249China Institute of Photonics Leibniz Universitat HannoverHannover30167Germany Petroleum College China University of Petroleum-Beijing at KaramayXinjiang834000China Beijing Institute of Petrochemical Technology Beijing102240China

Intra-stage multi-cluster temporary plugging and diverting fracturing(ITPF)is one of the fastest-growing techniques to obtain uniform reservoir stimulation in shale gas ***,propagation geometries of multiple fractures during ITPF are not clear due that the existing numerical models cannot capture the effects of perforation *** this paper,a new three-dimensional FEM based on CZM was developed to investigate multiple planar fracture propagation considering perforation plugging during ***,the fluid pipe element and its subroutine were first developed to realize the flux partitioning before or after perforation *** results showed that the perforation plugging changed the original distribution of the number of perforations in each fracture,thus changing the flux partitioning after perforation plugging,which could eliminate the effect of stress interference between multiple fractures and promote a uniform fluid *** standard deviation of fluid distribution in the perforation plugging case was only 8.48%of that in the non-diversion ***,critical plugging parameters have been investigated ***,injecting more diverters will create a higher fluid pressure rise in the wellbore,which will increase the risk of wellbore *** considering pressure rise and fluid distribution,the number of diverters should be 50%of the total number of perforations(N_(pt)),whose standard deviation of fluid distribution of multiple fractures was lower than those in the cases of injecting 10%N_(pt),30%N_(pt)and 70%N_(pt).The diverters should be injected at an appropriate timing,i.e.40%or 50%of the total fracturing time(tft),whose standard deviation of the fluid distribution was only about 20%of standard deviations in the cases of injecting at20%tftor 70%tft.A single injection with all diverters can maintain high bottom-hole pressure for a longer period and promote a more uniform fluid distribu

关键词： Hydraulic fracturing Multi-cluster fracture propagation Perforation plugging Finite element method Fluid distribution

Optimization of extraction of phenolics from leaves of Ficus virens

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第10期14卷 903-915页

作者： xiao-xin CHEN xiao-bing WU Wei-ming CHAI Hui-ling FENG Yan SHI han-tao ZHOU Qing-xi CHEN Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems School of Life Sciences Xiamen University

In this research,the conditions for extraction of phenolics from leaves of Ficus virens were optimized using response surface methodology(RSM).The extraction abilities of phenolics(EAP) and flavonoids(EAF),the 2,2-diphenyl-1-pierylhydrazyl(DPPH) free-radical scavenging potential,and the ferric reducing/antioxidant power(FRAP) were used as quality *** results of single-factor experiments showed that temperature,ethanol concentration,extraction time,and the number of extraction cycles were the main influencing variables,and these provided key information for the central composite *** results of RSM fitted well to a second degree polynomial model and more than 98% of the variability was *** ideal extraction conditions for EAP,EAF,DPPH free-radical scavenging potential,and FRAP were *** the four quality indicators overall,the ideal extraction conditions were 58% ethanol at 57 °C for 37 min with three extraction *** the ideal extraction conditions,the values of EAP,EAF,DPPH free-radical scavenging potential,and FRAP were 5.72%,3.09%,58.88 mg ascorbic acid equivalent(AAE)/g dry weight(DW),and 15.86 mg AAE/g DW,*** addition,linear correlations were observed between EAP,EAF,and antioxidant potential.

关键词： Ficus virens Phenolics Flavonoids Antioxidants Response surface methodology(RSM)

Seminal Plasma Biochemical Components Mediate the Inverse Association of Microcystin Exposure with Sperm Motility:A Mediation Analysis in Chinese Men

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Biomedical and Environmental Sciences 2023年第5期36卷 463-468页

作者： XU Di Hui MA Yu han YU Wen ZHOU Xue LUO Yang CHEN Ya bing han xiao Dong Immunology and Reproduction Biology Laboratory&State Key Laboratory of Analytical Chemistry for Life Science Medical SchoolNanjing UniversityNanjing 210093JiangsuChina Jiangsu Key Laboratory of Molecular Medicine Nanjing UniversityNanjing 210093JiangsuChina Department of Andrology Affliated Drum Tower HospitalSchool of MedicineNanjing UniversityNanjing 210008JiangsuChina

Epidemiological studies suggest a global decline in male fertility, which accounts for approximately50% of infertility cases in couples. Male infertility is a multifactorial and complex issue that may arise due to con... 详细信息

关键词： infertility congenital fertility

N^6-methyladenosine as a Novel Regulator of Brain Physiology and Diseases

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Current Medical Science 2020年第3期40卷 401-406页

作者： bing han Hong-hong YAO Department of Pharmacology School of MedicineSoutheast UniversityNanjing210009China Institute of Life Sciences Key Laboratory of Developmental Genes and Human DiseaseSoutheast UniversityNanjing210009China Co-innovation Center of Neuroregeneration Nantong UniversityNantong226019China

N^6-methyladenosine(m6A)is identified as the most widespread and abundant internal chemical modification of RNA in eukaryotes.A series of proteins including methyltransferases(also known as“writers”),demethylases(also known as“erasers”),and m6A-binding proteins(also known as“readers”)were indicated to participate in the m6A methylation.m6A has emerged as a regulator of various cellular,developmental,and disease ***,there is highest abundance of m^6A methylation in brain than in other organs,which indicates that m^6A plays an essential role in brain ***,we describe the general features,mechanisms,and functions of m^6A in the brain,and discuss the emerging roles of m6A in brain physiology and diseases.

关键词： m^6A brain physiology diseases

Revealing layer-dependent interlayer interactions by doping effect on graphene in WSe_(2)/N-layer graphene heterostructures using Raman and photoluminescence spectroscopy

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Rare Metals 2022年第11期41卷 3646-3653页

作者： Ya-bing Shan xiao-Fei Yue Jia-Jun Chen Jin-Kun han Garel Ekoya Lai-Gui Hu Ran Liu Zhi-Jun Qiu Chun-xiao Cong School of Information Science and Technology Fudan UniversityShanghai200433China Yiwu Research Institute of Fudan University Yiwu322000China Academy for Engineering and Technology Fudan UniversityShanghai200433Chin

Assembling layered materials in the form of vertically stacked heterostructures has enabled the combination of various properties from different two-dimensional(2D)materials,which is receiving a great deal of attention for investigating novel physical phenomena and emerging a facile way to fabricate promising highly tailored architectures.

关键词： graphene layer effect

Functional microglia derived from human pluripotent stem cells empower retinal organs

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Science China(Life Sciences) 2022年第6期65卷 1057-1071页

作者： Mei-Ling Gao xiao Zhang Fang han Jia Xu Si-Jian Yu Kangxin Jin Zi-bing Jin Institute of Stem Cell Research The Eye HospitalWenzhou Medical UniversityWenzhou 325027China Beijing Institute of Ophthalmology Beijing Tongren Eye CenterBeijing Tongren HospitalCapital Medical UniversityBeijing Ophthalmology&Visual Sciences Key LaboratoryBeijing 100730China

Microglia are known to play essential roles in the development,progression and treatment of diverse neurodegenerative diseases in the central nervous system,including the retina,brain and spinal ***,brain-induced microglia-like cells(iMGs)have been generated from human pluripotent stem cells(hPSCs);however,retinal microglia have yet to be developed in *** this study,by mimicking in vivo microglial development,we established a simplified approach to differentiate hPSCs into high purity(>90%)*** iMGs express microglia-specific markers,release cytokines upon stimulation,and are capable of phagocytizing *** co-cultured with three-dimensional human retinal organoids(hROs),iMGs migrated into the hROs,tended to differentiate into resident retinal microglia,and simultaneously induced apoptosis in some neural ***,the resident i MGs in the hROs formed sparse web-like structures beneath the photoreceptor cell layer,resembling microglia's orientation in human *** conclusion,we developed a simplified and efficient method to generate microglia from human pluripotent stem cells,and we report the first derivation of retinaresident microglia in vitro,providing a new source of human retinal microglia for developmental and disease studies and regenerative therapeutics.

关键词： microglia retinal organoid pluripotent stem cells differentiation human induced reprogramming

Deep eutectic solvents for separation and purification applications in critical metal metallurgy:Recent advances and perspectives

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 1-19页

作者： Shuo Chen Shengpeng Su Yanfang Huang bingbing Liu Hu Sun Shuzhen Yang Guihong han School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Zhongyuan Critical Metals Laboratory Henan ProvinceZhengzhou 450001China

Solvent extraction,a separation and purification technology,is crucial in critical metal *** solvents commonly used in solvent extraction exhibit disadvantages,such as high volatility,high toxicity,and flammability,causing a spectrum of hazards to human health and environmental *** solvents have been recognized as potential alternatives to these harmful organic *** the past two decades,several neoteric solvents have been proposed,including ionic liquids(ILs)and deep eutectic solvents(DESs).DESs have gradually become the focus of green solvents owing to several advantages,namely,low toxicity,degradability,and low *** this critical review,their classification,formation mechanisms,preparation methods,characterization technologies,and special physicochemical properties based on the most recent advancements in research have been systematically ***,the major separation and purification applications of DESs in critical metal metallurgy were comprehensively ***,future opportunities and challenges of DESs were explored in the current research *** conclusion,this review provides valuable insights for improving our overall understanding of DESs,and it holds important potential for expanding separation and purification applications in critical metal metallurgy.

关键词： deep eutectic solvents preparations properties separation and purification critical metal metallurgy