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Journal of Magnesium and Alloys 2024年第1期12卷 120-138页

作者： Zhao-Qi Zhang Bing-Zhi Li Pei-Duo Tong Shao-Kang Guan Li Wang Zheng-Hui Qiu Cun-Guo Lin Rong-chang zeng School of Material Science and Engineering&Henan Key Laboratory of Advanced Magnesium Alloy&Key Laboratory of Materials Processing and Mold Technology(Ministry of Education) Zhengzhou University100 Science RoadZhengzhou 450001China State Key Laboratory for Marine Corrosion and Protection Luoyang Ship Material Research InstituteQingdao 266101China Corrosion Laboratory for Light Metals College of Material Science and EngineeringShandong University of Science and TechnologyQingdao 266590China

Constructing a functional hybrid coating appears to be a promising strategy for addressing the poor corrosion resistance and insufficient endothelialization of Mg-based ***,the steps for preparing composite coatings are usually complicated and ***,a novel composite coating,composed of bioactive magnesium thioctic acid(MTA)layer formed by deposition and corrosion-resistant magnesium hydroxide(Mg(OH)_(2))layer grown in situ,is simply fabricated on ZE21B alloys via one-step *** electron microscopy(SEM)shows that the electrodeposited coating has a compact and uniform *** the high adhesion of the MTA/Mg(OH)_(2)hybrid coating is also confirmed by the micro-scratch *** test,scanning kelvin probe(SKP),and hydrogen evolution measurement indicate that the hybrid coating effectively reduces the degradation rate of Mg *** experiment and cell culture trial detect that the composite coating is of fine ***,the preparation mechanism of MTA/Mg(OH)_(2)hybrid coatings is discussed and *** coating shows a great potential application for cardiovascular stents.

关键词： Magnesium alloy Corrosion resistance Hybrid coating Endothelialization Biocompatibility

Exfoliation Corrosion of As‑Extruded Mg–1Li–1Ca:the Influence of the Superficial Layer

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Acta Metallurgica Sinica(English Letters) 2024年第8期37卷 1339-1353页

作者： Ze‑Song Wei Zi‑You Ding Lei Cai Shao‑Xia Ma Dong‑Qing Zhao Lan‑Yue Cui Cheng‑Bao Liu Yuan‑Sheng Yang Yuan‑Ding Huang Rong‑chang zeng Corrosion Laboratory for Light Metals College of Materials Science and EngineeringShandong University of Science and TechnologyQingdao 266590China Engineering Research Center for Magnesium‑Based New Materials Center for Advancing Materials Performance from the Nanoscale(CAMP‑Nano)State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi’an 710049China Shandong Provincial Key Laboratory of High Strength Lightweight Metallic Materials Advanced Materials InstituteQilu University of Technology(Shandong Academy of Sciences)Jinan 250014China Institute of Metals Research Chinese Academy of SciencesShenyang 110016China Institute of Metallic Biomaterials Helmholtz-Zentrum HereonMax‑Planck‑Str.121502 GeesthachtGermany

Exfoliation corrosion(EFC)has rarely been reported for wrought magnesium *** EFC of the as-extruded Mg–1Li–1Ca alloy was observed after the removal of outermost fine-grained *** microstructure and corrosion products were investigated using optical microscopy,scanning electron microscopy,electron backscattered diffraction,X-ray diffraction,and Fourier transform infrared *** corrosion behavior was analyzed using electrochemical polarization,electrochemical impedance spectroscopy,and scanning Kelvin probe *** results indicated that the surface of Mg–1Li–1Ca,with the superficial layer removed,was more susceptible to EFC.A linear correlation between grain boundary density and corrosion resistance was ***,the influence of factors such as grain size,intermetallic compounds,different alloy surfaces,and corrosion products on EFC were discussed,and the corresponding EFC mechanism was clarified.

关键词： Magnesium alloys Exfoliation corrosion Microstructure Intermetallic compound Metamorphic skin

Molecular Characterization of Coxsackievirus B1 Strains Isolated from Patients with Hand Foot and Mouth Disease in Yunnan,Southwest China

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Biomedical and Environmental Sciences 2024年第5期37卷 543-548页

作者： XU Dan Han ZHANG Ming CHEN Jun Wei Feng chang zeng LIU Yu Han CHU Zhao Yang LIU Wen Jing LI Li MA Shao Hui Institute of Medical Biology Chinese Academy of Medical Sciencesand Peking Union Medical CollegeKunming 650118YunnanChina Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease Kunming 650118YunnanChina School of Life Sciences Yunnan UniversityKunming 650504YunnanChina School of Medicine Yunnan UniversityKunming 650504YunnanChina Department of Clinical Laboratory Kunming Maternal and Child Health hospital Kunming 650031YunnanChina

Coxsackievirus(CV)B belongs to the species Enterovirus B,genus Enterovirus of the family *** B(EV-B)includes 63 serotypes:CVB1-6;CVA9;echoviruses E1-7,9,11-21,24-27,and 29-33;EV-B69,EV-B 73-75,EV-B77-88,EV-B 93,EV-B 9... 详细信息

关键词： Coxsackievirus Patients belongs

The relationship between the distribution of HBcAg in liver cells and the pathological manifestations of the liver in 429 HBeAg-positive chronic HBV-infected individuals

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Gastroenterology & Hepatology Research 2024年第3期6卷 10-15页

作者： Fan Nie chang-Chun zeng Guang-Dong Tong Mu-Min Shao Xiao-Hua Le Xin Deng Da-Qiao Zhou National Clinical Research Center for Infectious Diseases Shenzhen 518112China Central Laboratory of Shenzhen Longhua District Central Hospital Shenzhen 518112China Hepatology Department of Shenzhen Traditional Chinese Medicine Hospital Shenzhen 518112China Pathology Department of Shenzhen Traditional Chinese Medicine Hospital Shenzhen 518112China Pathology Department of Shenzhen Third People's Hospital Shenzhen 518112China Traditional Chinese Medicine Department of Shenzhen Third People's Hospital Shenzhen 518112China

Background:The natural history of chronic HBV infection is typically characterized by four stages:the immune tolerance period,the immune clearance period,the immune control period,and the immune escape *** stages are associated with the distribution of HBcAg in liver cells;however,this relationship remains a topic of broad debate within the field of liver *** objectively and quantitatively measure the intracellular distribution of HBcAg,this paper aims to design a method referred to as the“layered evaluation method”and to examine its ***:The distribution of HBcAg in liver cells is assessed using Image Pro Plus image processing software,along with calculations of cytoplasmic and nuclear positive staining ***:The findings indicate that the highest proportion of patients exhibited a positive cytoplasmic expression rate ranging from 0-2.5%.More than 40% of the total sample was categorized within the 0-2.5% positive nuclear expression *** HBcAg cytoplasmic positive staining rates were classified into five levels:a cytoplasmic HBcAg positive staining rate of less than 0.05% is designated as level 0,indicating negative expression;a staining rate between 0.05% and 5% is classified as level 1;a rate from 5% to less than 10% is classified as level 2;a rate from 10% to less than 20% is classified as level 3;and a nuclear positivity rate exceeding 20% is classified as level ***:The inflammatory activity grade in these patients was positively correlated with the cytoplasmic distribution of ***,the nuclear distribution rate of HBcAg was significantly higher in the G3 group compared to the other groups.

关键词： distribution of HBcAg pathological manifestations of the liver positive staining rate

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袁州会议:毛泽东对“立三路线”的纠正

宜春学院学报 2024年第4期46卷 1-6页

作者：曾长秋中南大学马克思主义学院湖南长沙410083

1930年9月,红一方面军放弃攻打长沙计划,在撤往赣西南途中召开了袁州会议。毛泽东说服红军部分将领和中央代表周以栗,对“立三路线”进攻大城市的军事冒险主义进行了纠正。袁州会议基本上实现了纠“左”和战略转兵两大目标,在红军领导... 详细信息

1930年9月,红一方面军放弃攻打长沙计划,在撤往赣西南途中召开了袁州会议。毛泽东说服红军部分将领和中央代表周以栗,对“立三路线”进攻大城市的军事冒险主义进行了纠正。袁州会议基本上实现了纠“左”和战略转兵两大目标,在红军领导层逐渐平息了激烈争论并形成共识,接受了毛泽东关于经略江西、开辟中央苏区的思想,为走农村包围城市道路打下了基础。

关键词：毛泽东袁州会议纠正立三路线

湿润烧伤膏联合威伐光照射在肛周脓肿术后的应用效果观察

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中国肛肠病杂志 2024年第4期44卷 62-64页

作者：王长增山东省潍坊同心医院山东潍坊261031

目的:观察湿润烧伤膏联合威伐光照射在肛周脓肿患者术后的应用效果。方法:将2020年6月至2023年6月我院收治的80例肛周脓肿术后患者随机分为对照组和联合组,每组40例。对照组患者采用威伐光照射治疗,联合组患者在对照组治疗的基础上增加... 详细信息

目的:观察湿润烧伤膏联合威伐光照射在肛周脓肿患者术后的应用效果。方法:将2020年6月至2023年6月我院收治的80例肛周脓肿术后患者随机分为对照组和联合组,每组40例。对照组患者采用威伐光照射治疗,联合组患者在对照组治疗的基础上增加湿润烧伤膏治疗,观察比较不同治疗方案对肛周脓肿患者术后疼痛和创面愈合等情况。结果:2组患者术后1 d疼痛评分比较差异无统计学意义(P>0.05),联合组患者3 d、5 d、7 d疼痛评分明显低于对照组(P0.05),联合组患者术后10 d、20 d创面面积明显小于对照组(P<0.05)。结论:湿润烧伤膏联合威伐光照射用于肛周脓肿患者术后,可减轻其疼痛,缩小创面面积,缩短症状消退时间和创面愈合时间,值得临床推广应用。

关键词：肛周脓肿手术湿润烧伤膏威伐光照射

通过调控表面石墨烯-环氧树脂复合涂层的仿生界面和取向以提高镁合金的防腐和热/电性能

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Transactions of Nonferrous Metals Society of China 2024年第1期34卷 157-170页

作者：隋普升刘成宝张爱猛孙聪崔蓝月曾荣昌山东科技大学材料科学与工程学院青岛266590 郑州大学材料科学与工程学院郑州450002

通过旋涂方法制备具有“砖泥”结构的仿生石墨烯−环氧树脂复合涂层。合成咪唑基离子液体修饰的石墨烯(GI)以改善石墨烯(G)和环氧树脂之间的界面相容性。通过扫描电镜、拉曼光谱、X射线光电子能谱和傅里叶变换红外光谱观察和分析其表面... 详细信息

通过旋涂方法制备具有“砖泥”结构的仿生石墨烯−环氧树脂复合涂层。合成咪唑基离子液体修饰的石墨烯(GI)以改善石墨烯(G)和环氧树脂之间的界面相容性。通过扫描电镜、拉曼光谱、X射线光电子能谱和傅里叶变换红外光谱观察和分析其表面形貌和化学结构,利用热成像仪记录表面温度变化,通过体积表面积电阻率测试仪和激光闪点法分别测定涂层的表面电阻率和导热系数,通过电化学阻抗谱和盐雾腐蚀试验表征其耐蚀性。复合涂层中的GI层呈现出近似平行的取向,从而提高热传导和静电耗散效率。穿过平面的导热系数和表面电阻率分别为0.77 W·m^(−1)·K^(−1)和1.6×10^(6)Ω·cm。电化学阻抗谱测试表明,经过40 d的浸泡,涂层的低频模量达到6.76×10^(10)Ω·cm^(2),比纯环氧涂层提高约2个数量级,表现出优异的耐腐蚀性。

关键词：仿生结构复合涂层镁合金石墨烯取向耐蚀性

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复杂环境下的飞行器在线航路规划决策方法

系统工程与电子技术 2024年第9期46卷 3166-3175页

作者：杨志鹏陈子浩曾长林松毛金娣张凯湖北航天技术研究院总体设计所湖北武汉430040

针对飞行器在线航路规划问题,提出一种基于深度强化学习(deep reinforcement learning,DRL)的飞行器在线自主决策方法。首先对飞行器运动模型、探测模型进行了说明,然后采用DRL深度确定性策略梯度(deep deterministic policy gradient,D... 详细信息

针对飞行器在线航路规划问题,提出一种基于深度强化学习(deep reinforcement learning,DRL)的飞行器在线自主决策方法。首先对飞行器运动模型、探测模型进行了说明,然后采用DRL深度确定性策略梯度(deep deterministic policy gradient,DDPG)算法,对飞行器飞行控制策略模型框架进行了构建。在此基础上,提出了一种基于课程学习(curriculum learning,CL)的CL-DDPG算法,将在线航路规划任务进行分解,引导飞行器进行目标靠近、威胁规避、航路寻优策略学习,并设置相应的高斯噪声帮助飞行器对策略进行探索和优化,实现了复杂场景下的飞行器自适应学习和决策控制。仿真实验证明,CL-DDPG算法能够有效提升模型的训练效率,算法模型任务成功率更高,具有优秀的泛化性和鲁棒性,能够更好地应用于复杂动态环境下的在线航路规划任务中。

关键词：在线航路规划深度强化学习自主决策课程学习威胁规避

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粮仓能源桩系统绿色储粮技术应用研究

粮食与油脂 2024年第4期37卷 58-62页

作者：曾长女罗晋谷贺宋红领王世慧河南工业大学土木建筑学院河南郑州450001 河南工大设计研究院有限公司河南郑州450001

简化粮食入库后全周期控温供冷储粮流程,提出满仓主动降温与夏季粮仓热平衡2种供冷方案。通过理论公式计算2种方案下的供冷量需求,并利用有限元模拟软件计算得出能源桩换热量,由此设计可满足上部粮仓供冷需求的能源桩运行方案。结果表明... 详细信息

简化粮食入库后全周期控温供冷储粮流程,提出满仓主动降温与夏季粮仓热平衡2种供冷方案。通过理论公式计算2种方案下的供冷量需求,并利用有限元模拟软件计算得出能源桩换热量,由此设计可满足上部粮仓供冷需求的能源桩运行方案。结果表明:在1万t储粮规模下,粮仓能源桩储粮技术可满足2种供冷方案下的能源需求,对比谷物冷却机与地源热泵储粮,其初期投入成本更低;对比空调储粮,其初期投入成本增加,但能源桩储粮技术可利用绿色清洁能源,储粮能耗最低。

关键词：能源桩技术清洁供冷低温储粮经济性分析

Advances in Mg-Al-layered double hydroxide steam coatings on Mg alloys:A review

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Journal of Magnesium and Alloys 2023年第5期11卷 1505-1518页

作者： Shi-Qi Pan Fen Zhang Cuie Wen Rong-chang zeng Corrosion Laboratory for Light Metals College of Materials Science and EngineeringShandong University of Science and TechnologyQingdao 266590China School of Engineering RMIT UniversityMelbourneVictoria3001Australia School of Materials Science and Engineering Zhengzhou UniversityZhengzhou450002China

Layered double hydroxide(LDH)coatings on magnesium(Mg)alloys shine brightly in the field of corrosion protection because of their special ion-exchange ***-of-the-art steam coating as a type of LDH film preparation technique has emerged in recent years because only pure water is required as the steam source and its environmentally friendly LDH coating fits the current need for green ***,this coating can effectively inhibit the corrosion of the Mg alloy substrate due to the chemical bonding between the coating and the Mg alloy *** review systematically explains cutting-edge advancements in the growth mechanism and corrosion behavior of LDH steam coatings,and analyzes the advantages and limitations of the steam-coating *** influencing factors including pressure,CO_(2)/CO_(3)^(2-),aluminum content of the substrate alloy,solution type,and acid-pickling pretreatment,as well as the post-treatment of steam-coating defects,are comprehensively elucidated,providing new insights into the development of the in situ steam-coating ***,existing issues and future prospects are discussed to further accelerate the widespread application of Mg alloys.

关键词： Corrosion Layered double hydroxide(LDH) Mg alloy Steam coating Surface modification