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基于多模型建模的基站光模块故障预测

电信工程技术与标准化 2024年第7期37卷 48-54页

作者：郭祥黄霁钊孙立莉祁江伟陆康梁山中国移动通信集团新疆有限公司乌鲁木齐830000

为解决基于聚类分解的多模型建模中,簇之间边界不清晰和误划造成建模预测精度低的问题,本文提出一种单向近邻搜索算法,通过合并K-means聚类后各簇之间相距较近的数据群,建立重叠训练域。进一步通过计算相邻簇与其重叠域之间的数据特征差... 详细信息

为解决基于聚类分解的多模型建模中,簇之间边界不清晰和误划造成建模预测精度低的问题,本文提出一种单向近邻搜索算法,通过合并K-means聚类后各簇之间相距较近的数据群,建立重叠训练域。进一步通过计算相邻簇与其重叠域之间的数据特征差异,作为估计重叠域工况点的模型输出权重。最后,分别以Iris数据集和基站光模块为研究实例进行验证,结果表明可以获得更高的预测精度,验证了本文方法的有效性。

关键词：多模型光模块故障预测 K-means

A sutureless technique for securing leaking sclerotomies with viscoelastic substances in 23-gauge microincision vitrectomy surgery

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International Journal of Ophthalmology(English edition) 2023年第5期16卷 730-735页

作者： Meng Li Quan-Yong Yi Jing-Hai Mao Yan-Hong Liao Yan-Yan Wang Qin-kang lu Yan Gong Health Science Center Ningbo UniversityNingbo 315211Zhejiang ProvinceChina Department of Ophthalmology Ningbo Eye HospitalNingbo 315042Zhejiang ProvinceChina Department of Ophthalmology The Affiliated People’s Hospital of Ningbo UniversityNingbo 315040Zhejiang ProvinceChina

AIM:To introduce and evaluate the clinical efficacy of a new technique,the use of viscoelastic substances(VS)to close leaking sclerotomy in 23G microincision vitrectomy,and to observe its effect on the visual acuity and intraocular pressure(IOP)of ***:Patients who underwent 23G vitrectomy in Ningbo Eye Hospital before the use of VS technique(June 2019 to September 2020)and after the use of VS technique(October 2020 to December 2021)were selected as the subjects of this *** above cases underwent operation by the same surgeon and were retrospectively *** technique was used as the alternative to suturing,in which a small amount of VS was injected at the leaking sclerotomy and then gently massaged to confirm leaking sclerotomy ***:A total of 174 eyes were covered in the study,including 84 eyes in the control group(before the use of VS technique)and 90 eyes in the VS technique *** number of eyes that needed to be sutured decreased considerably from 42.9%in the control group to 3.3%in the VS technique group,and the proportion of subconjunctival hemorrhage at 1-2d after surgery decreased remarkably from 35.7%in the control group to 2.2%in the VS technique *** substantial differences in the incidence of mean IOP and low IOP were found between 1-2 and 3-20d after surgery in the VS technique *** major complications associated with VS technique were identified during the ***:In 23G microincision vitrectomy,VS technique is a safe,simple,and effective method to close leaking sclerotomy.

关键词： vitrectomy surgery leaking sclerotomy 23-gauge sutureless technique viscoelastic substances intraocular pressure

Artificial intelligence optimization and controllable slow-release iron sulfide realizes efficient separation of copper and arsenic in strongly acidic wastewater

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Journal of Environmental Sciences 2024年第5期139卷 293-307页

作者： Xingfei Zhang Chenglong lu Jia Tian Liqiang Zeng Yufeng Wang Wei Sun Haisheng Han Jianhua kang School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China Centre for Mined Land Rehabilitation Sustainable Minerals InstituteThe University of QueenslandBrisbane 4072Australia

Iron sulfide(FeS)is a promising material for separating copper and arsenic from strongly acidic wastewater due to its S^(2-)slow-release ***,uncertainties arise because of the constant changes in wastewater composition,affecting the selection of operating parameters and FeS *** this study,the aging method was first used to prepare various controllable FeS nanoparticles to weaken the arsenic removal ability without affecting the copper *** experiments were conducted,and the results identified the Cu/As ratio,H_(2)SO_(4) concentration,and FeS dosage as the three main factors influencing the separation *** backpropagation artificial neural network(BP-ANN)model was established to determine the relationship between the influencing factors and the separation *** correlation coefficient(R)of overall model was 0.9923 after optimizing using genetic algorithm(GA).The BP-GA model was also solved using GA under specific constraints,predicting the best solution for the separation process in *** predicted results show that the high temperature and long aging time of FeS were necessary to gain high separation efficiency,and the maximum separation factor can reached 1,*** study provides a suitable sulfurizing material and a set of methods and models with robust flexibility that can successfully predict the separation efficiency of copper and arsenic from highly acidic environments.

关键词： FeS nanoparticles Aging Sulfide precipitation Orthogonal experiment Artificial neural network Prediction

Antibacterial and antioxidant bifunctional hydrogel based on hyaluronic acid complex MoS_(2)-dithiothreitol nanozyme for treatment of infected wounds

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Regenerative Biomaterials 2024年第4期3卷 98-110页

作者： Yongping lu Weiqi kang Yue Yu Ling Liang Jinrong Li Haiying lu Ping Shi Mingfang He Yuemin Wang Jianshu Li Xingyu Chen Guangyuan Central Hospital Guangyuan 628000P.R.China State Key Laboratory of Polymer Materials Engineering College of Polymer Science and EngineeringSichuan UniversityChengdu 610065P.R.China Institute of Biomedical Engineering College of MedicineSouthwest Jiaotong UniversityChengdu 610031P.R.China

Wound repair is a complex physiological process that often leads to bacterial infections,which significantly threaten human ***,developing wound-healing materials that promote healing and prevent bacterial infections is *** this study,the coordination interaction between sulfhydryl groups on dithiothreitol(DTT)and MoS_(2)nanosheets is investigated to synthesize a MoS_(2)-DTT nanozyme with photothermal properties and an improved free-radical scavenging ***-bond-modified hyaluronic acid is used as a monomer and is cross-linked with a PF127-DA *** is prepared in coordination with MoS_(2)-DTT as the functional *** hydrogel exhibits antioxidant and antibacterial properties,attributed to the catalytic activity of catalase-like enzymes and photothermal *** the near-infrared(NIR),it exhibits potent antibacterial effects against gram-positive(Staphylococcus aureus)and gram-negative bacteria(Escherichia coli),achieving bactericidal rates of 99.76%and 99.42%,***,the hydrogel exhibits remarkable reactive oxygen species scavenging and antioxidant capabilities,effectively countering oxidative stress in L929 ***,in an animal model,wounds treated with the PHMoD(2.0)and NIR laser heal the fastest,sealing completely within 10 *** results indicate the unique biocompatibility and bifunctionality of the PHMoD,which make it a promising material for wound-healing applications.

关键词： hydrogel wound repair antibacterial antioxidant nanozyme photothermal therapy

Glycation of high-density lipoprotein in type 2 diabetes mellitus

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Chinese Medical Journal 2013年第21期126卷 4162-4165页

作者： Sun Jia-teng Shen Ying lu An-kang lu Lin Shen Wei-feng Shanghai Jiao Tong Univ Sch Med Dept Cardiol Ruijin Hosp Shanghai 200025 Peoples R China Shanghai Jiao Tong Univ Sch Med Inst Cardiovasc Dis Shanghai 200025 Peoples R China

Objective To evaluate whether glycation of high-density lipoprotein （HDL） increases cardiovascular risk in patients with type 2 diabetes mellitus by altering its anti-atherogenic property.

关键词： glycation high-density lipoprotein atherosclerosis diabetes

Analytical Model and Topology Optimization of Doubly-fed Induction Generator

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CES Transactions on Electrical Machines and Systems 2024年第2期8卷 162-169页

作者： lu Sun Haoyu kang Jin Wang Zequan Li Jianjun Liu Yiming Ma Libing Zhou the State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China IEEE Dongfang Electric Machinery Co. LtdDongfang Electric CorporationDeyangChina CSG PGC Energy Storage Research Institute Southern Power Grid Energy Storage Co.LtdGuangzhou 510630China

As the core component of energy conversion for large wind turbines,the output performance of doubly-fed induction generators (DFIGs) plays a decisive role in the power quality of wind *** realize the fast and accurate design optimization of DFIGs,this paper proposes a novel hybriddriven surrogate-assisted optimization *** firstly establishes an accurate subdomain model of DFIGs to analytically predict performance ***,taking the inexpensive analytical dataset produced by the subdomain model as the source domain and the expensive finite element analysis dataset as the target domain,a high-precision surrogate model is trained in a transfer learning way and used for the subsequent multi-objective optimization *** on this model,taking the total harmonic distortion of electromotive force,cogging torque,and iron loss as objectives,and the slot and inner/outer diameters as parameters for optimizing the topology,achieve a rapid and accurate electromagnetic design for ***,experiments are carried out on a 3MW DFIG to validate the effectiveness of the proposed method.

关键词： Doubly-fed induction generators Accurate subdomain model Surrogate-assisted Transfer learning

Mechanical properties and energy evolution of Beishan shallow-layer granite under different unloading paths

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Journal of Mountain Science 2024年第5期21卷 1728-1744页

作者： WANG Chuanle LI Erbing ZHANG Dengke HAN Yang lu Hui HE kang DU Guangyin School of Transportation Southeast UniversityNanjing 211189China College of Defense Engineering Army Engineering University of PLANanjing 210007China Nanjing Urban Construction Management Group Co. Ltd.Nanjing 210006China College of Field Engineering Army Engineering University of PLANanjing 210007China

Rock has mechanical characteristics and a fracture damage mechanism that are closely related to its loading history and loading path. The mechanical properties, fracture damage features, acoustic emission(AE) characteristics, and strain energy evolution of the Beishan shallow-layer granite used in triaxial unloading tests were investigated in this study. Three groups of triaxial tests, namely, conventional triaxial compression test(Group Ⅰ), maintaining deviatoric stress synchronously unloading confining pressure test(Group Ⅱ), and loading axial pressure synchronously unloading confining pressure test(Group Ⅲ), were carried out for the cylindrical granite specimens. AE monitoring device was utilized in these tests to determine the degree to which the AE waves and AE events reflected the degree of rock damage. In addition, the crack stress thresholds of the specimens were determined by volumetric strain method and AE parameter method, and strain energy evolution of the rock was explored in different damage stages. The results show that the shallow-layer granite experiences brittle failure during the triaxial loading test and unloading test, and the rock has a greater damage degree during the unloading test. The crack stress thresholds of these samples vary greatly between tests, but the threshold ratios of all samples are similar in the same crack damage stage. The Mogi-Coulomb strength criterion can better describe the unloading failure strength of the rock. The evolution of the AE parameter characteristics and strain energy differs between the specimens used in different stress path tests. The dissipative strain energy is the largest in Group Ⅱ and the smallest in Group Ⅰ.

关键词： Beishan granite Unloading test Mechanical properties Damage mechanism Acoustic emission Strain energy

Lonicera Japonica Caulis Ameliorates LPS and TNF-α-Induced HT-29 Cell Injury by Inhibiting the MAPK/ERK/JNK/p38 Pathway

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Biomedical and Environmental Sciences 2024年第7期37卷 805-810页

作者： Hanxiu lu Wei Yan Xiao Yuan Yongbo kang Zhongjian Liu Qiang Guo Faculty of Life science and Technology Kunming University of Science and TechnologyKunming 650031YunnanChina School of medicine Kunming University of Science and TechnologyKunming 650031YunnanChina Department of Gastroenterology The First People’s Hospital of Yunnan ProvinceKunming 650032YunnanChina Department of Gastroenterology The First People’s Hospital of Yuxi CityYuxi 653100YunnanChina Institute of Basic and Clinical Medicine The First People’s Hospital of Yunnan ProvinceKunming 650032YunnanChina

Inflammatory bowel disease(IBD)is characterized by chronic inflammation of the intestinal tract,and shows a high rate of *** have accumulated extensive experience in the treatment of IBD,with biologics and small molecule drugs having greatly expanded the therapeutic scope of IBD in recent ***,such treatments involve a high price and a single target of drug action.

关键词： drugs treatment p38

Dynamics of severe acute respiratory syndrome coronavirus 2 genome variants in the feces during convalescence

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Journal of Genetics and Genomics 2020年第10期47卷 610-617页

作者： Yi Xu lu kang Zijie Shen Xufang Li Weili Wu Wentai Ma Chunxiao Fang Fengxia Yang Xuan Jiang Sitang Gong Li Zhang Mingkun Li Department of Pediatrics Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou510623China Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of SciencesChina National Center for BioinformationBeijing101300China University of Chinese Academy of Sciences Beijing100049China Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunming650223China

In response to the current coronavirus disease 2019(COVID-19)pandemic,it is crucial to understand the origin,transmission,and evolution of severe acute respiratory syndrome coronavirus 2(SARS-Co V-2),which relies on close surveillance of genomic diversity in clinical *** the mutation at the population level had been extensively investigated,how the mutations evolve at the individual level is largely *** time-series fecal samples were collected from nine patients with COVID-19 during the convalescent *** nucleic acids of SARS-CoV-2 were enriched by the hybrid capture ***,we demonstrated the outstanding performance of the hybrid capture method in detecting intra-host *** identified 229 intra-host variants at 182 sites in 18 fecal *** them,nineteen variants presented frequency changes>0.3 within 1-5 days,reflecting highly dynamic intrahost viral ***,the evolution of the viral genome demonstrated that the virus was probably viable in the gastrointestinal tract during the convalescent ***,we also found that the same mutation showed a distinct pattern of frequency changes in different individuals,indicating a strong random *** summary,dramatic changes of the SARS-CoV-2 genome were detected in fecal samples during the convalescent period;whether the viral load in feces is sufficient to establish an infection warranted further investigation.

关键词： SARS-CoV-2 Intra-host variant Dynamics Mutation Hybrid capture