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铝合金电镀的研究进展

材料导报 2005年第12期19卷 60-63页

作者：夏扬王吉会王茂范天津大学材料科学与工程学院天津300072

在电镀纯铝体系的基础上,详细阐述了铝合金镀层的分类、电解质体系的组成、工艺参数、镀层质量等,分析总结了铝合金镀层较纯铝镀层在耐蚀性、强度、硬度等性能方面的优势。展望了铝合金电镀的应用前景和发展方向。

关键词：铝合金电镀电解质工艺参数镀层质量耐蚀性强度硬度

柔性制造系统(FMS)故障预测与健康管理视情维修系统研究

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机床与液压 2012年第7期40卷 186-190页

作者：赵中敏王茂凡淮海工学院工程训练中心江苏连云港222005 亚翔系统集成科技(苏州)股份有限公司江苏苏州215126

现有的视情维修系统研究中缺乏对处于正常运行阶段的设备因加工过程操作不当所引起的运行故障进行预测维修。为提高柔性制造系统的使用寿命及使用效率,提出预测与健康管理视情维修的体系结构,构建柔性制造系统视情维修系统的功能框图并... 详细信息

现有的视情维修系统研究中缺乏对处于正常运行阶段的设备因加工过程操作不当所引起的运行故障进行预测维修。为提高柔性制造系统的使用寿命及使用效率,提出预测与健康管理视情维修的体系结构,构建柔性制造系统视情维修系统的功能框图并分析其工作流程;通过对设备运行状态信息融合,借助人工智能推理对柔性制造系统的状态监测、健康评估和故障预测方法进行了具体分析。该方案能够实现柔性制造系统故障的提前预测和剩余寿命计算,具有重要的工业推广价值。

关键词：故障预测健康管理神经网络柔性制造系统视情维修

TR-light:基于多信号灯强化学习的交通组织方案优化算法

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计算机应用研究 2022年第2期39卷 504-509,514页

作者：吴昊昇郑皎凌王茂帆成都信息工程大学软件工程学院成都610225

针对多变环境条件下的交通堵塞问题,将强化学习、神经网络、多智能体和交通仿真技术结合起来,提出了用于优化多路口条件下交通状况的trajectory reward light(TR-light)模型。该方法具有几个显著特点:基于红绿灯拟定交通组织方案;将多... 详细信息

针对多变环境条件下的交通堵塞问题,将强化学习、神经网络、多智能体和交通仿真技术结合起来,提出了用于优化多路口条件下交通状况的trajectory reward light(TR-light)模型。该方法具有几个显著特点:基于红绿灯拟定交通组织方案;将多智能体强化学习用于红绿灯控制;通过红绿灯的协同达到区域级的交通组织优化;在智能体每次行为执行结束后实施轨迹重构,在OD对不改变的情况下改变车辆行驶路径,根据方案和重构轨迹来计算智能体的最终回报。通过SUMO进行交通仿真实验和交通指标对比,验证了该模型在多交叉口中能够提高路网畅通率,改善交通状态。实验表明该模型可行,可有效缓解交通拥堵。

关键词：多智能体强化学习 SUMO 红绿灯

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数控机床切削颤振状态监测与控制技术

工具技术 2012年第4期46卷 84-86页

作者：赵中敏王茂凡淮海工学院亚翔系统集成科技(苏州)股份有限公司

针对数控机床加工过程中切削颤振的现象,通过对机床的在线监测,将采样出的加速度信号进行数据处理,提出一种θ法作为判据的方法来判别颤振是否发生,并通过监控计算机对主轴箱和进给箱进行调控,达到抑制颤振的方法。该监控系统通用性强,... 详细信息

针对数控机床加工过程中切削颤振的现象,通过对机床的在线监测,将采样出的加速度信号进行数据处理,提出一种θ法作为判据的方法来判别颤振是否发生,并通过监控计算机对主轴箱和进给箱进行调控,达到抑制颤振的方法。该监控系统通用性强,所用设备少,具有可行性,从而为提高加工效率提供可循的加工依据。

关键词：数控机床切削颤振 θ法在线监控控制

剑河县革东镇水稻测土配方施肥“3414”试验结果分析

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北京农业 2012年第6期 123-124页

作者：杨汉竹王茂凡杨俊春贵州省剑河县农业和扶贫开发局土肥站

通过对剑河县革东镇前进村氮、磷、钾"3414."的肥效试验,得出水稻生产中氮、磷、钾三元素的合理施用量,取得水稻肥效的最佳施肥量,为当地农民科学施肥提供依据。

关键词：水稻测土配方施肥 “3414肥效试验” 施肥量剑河县

Rationally tailoring interface characteristics of ZnO/amorphous carbon/graphene for heat-conduction microwave absorbers

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Nano Research 2022年第10期15卷 8677-8687页

作者： maofan Zhou Xuefei Xu Gengping Wan Pengpeng Mou Shengjie Teng Guizhen wang State Key Laboratory of Marine Resource Utilization in South China Sea Hainan UniversityHaikou 570228China

With the increasingly severe electromagnetic interference issue and the huge heat dissipation demand caused by the miniaturized and integrated electronic devices,exploring the heat-conduction microwave absorption(MA)materials is highly desired and remains a great ***,we reported the fabrication of ZnO/amorphous carbon(ZnO/AC)hybrid films covered on the surface of graphene(ZnO/AC/Graphene)to simultaneously apply as the MA and thermal management *** ZnO/AC coatings synthesized with the auxiliary of an atomic layer deposition(ALD)method are highly uniform and controllable,which can significantly improve the MA performance and thermal conduction properties of *** reflection loss(RL)of−55.4 dB and the effective absorption bandwidth of 5.3 GHz were achieved with thickness of 2.0 mm for ZnO/AC/Graphene at a low loading content(3 wt.%).The minimum RL of−57.9 dB can be obtained in the ZnO/AC/Graphene composites at a low frequency(7.8 GHz).Moreover,the absorption frequency can be regulated by changing the ZnO/AC which can be readily implemented by adjusting the ALD cycles of *** thermal conductivity of ZnO/AC/Graphene is up to 257.8 mW·m^(−1)·K^(−1),increased by 53.2%compared with natural *** enhancement mechanisms of microwave loss and heat conduction are systematically studied in *** work not only develops an excellent candidate,but also provides a novel strategy to design functional materials for heat-conduction MA application.

关键词： atomic layer deposition graphene microwave absorption heat conductivity

Co/carbon nanofiber with adjustable size and content of Co nanoparticles for tunable microwave absorption and thermal conductivity

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Journal of Materiomics 2024年第1期10卷 124-133页

作者： Shaohua Shi Pengpeng Mou Dao wang Xiangying Li Shengjie Teng maofan Zhou Xiaolong Yu Zhen Deng Gengping Wan Guizhen wang State Key Laboratory of Marine Resource Utilization in South China Sea School of Materials Science and EngineeringHainan UniversityHaikouHainan570228China Department of Radiology Central South University Xiangya School of Medicine Affiliated Haikou HospitalHaikou570208China College of Science Qiongtai Normal UniversityHaikouHainan571127China Sanya Nanfan Research Institute of Hainan University Hainan Yazhou Bay Seed LaboratorySanya572025China

Electromagnetic pollution and heat dissipation problems are becoming increasingly worthy of attention due to the rapid development of electronic devices,which puts forward an urgent demand for microwave absorbers with excellent thermal management ***,high-performance Co/carbon nanofiber(Co/CNF)microwave absorbers with high thermal conductivity were fabricated by facile step-by-step *** microwave absorption properties can be readily tuned by adjusting the content and size of Co nanoparticles through concentration gradient *** from the formation of dielectric and magnetic coupling network,Co/CNF composites possess intensive dipole polarization,interface polarization,and magnetic *** optimal Co/CNF composites exhibit outstanding microwave absorption performance with a minimum reflection loss(RL)of−53.0 dB at 11.44 GHz,and a maximum effective absorption bandwidth(EAB)of 5.5 *** addition,the thermal conductivities of the Co/CNF-natural rubber(Co/CNF-NR)composites are significantly *** work may inspire the exploration of high-efficiency heat-conduction microwave absorbers based on CNF.

关键词： Carbon nanofiber Co nanoparticle Microwave absorption Heat conductivity

血清GAD、ICA及C-P联合检测对I型糖尿病的诊断价值

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昆明医科大学学报 2022年第4期43卷 99-102页

作者：江岩赵正科王光彦许连刚李梦蝶王茂繁龙双梅刘蛟钱晋云南楚雄彝族自治州人民医院检验科云南楚雄675000 云南楚雄彝族自治州人民医院科教科云南楚雄675000

目的探讨I型糖尿病(type 1 diabetes mellitus,T1DM)患者血清谷胱氨酸脱羧酶抗体(glutamic acid decarboxylase antibody,GAD)、胰岛细胞自身抗体(islet cell autoantibody,ICA)、C肽(C-peptide,C-P)水平变化对T1DM患者的临床诊断价值。方法回顾性分析楚雄彝族自治州人民医院2019年1月至2020年8月期间54例T1DM确诊患者检测的GAD、ICA、C-P数值,同时与在此期间来我院体检的50例正常人群进行分析对比。结果观察组GAD、ICA明显高于对照组;观察组C-P明显低于对照组,差异有统计学意义(P<0.05)。GAD、ICA、C-P及3项共同检测用于T1DM诊断的AUC分别为0.927、0.840、0.956、0.993。其中GAD、ICA、C-P共同检测的ROC曲线下面积(AUC)最大,提示GAD、ICA、C-P联合检测的诊断效能高于GAD、ICA、CP单独检测。结论GAD、ICA及C-P指标联合检测有利于提高T1DM诊断的灵敏度和特异度,对于T1DM的临床早期诊疗及预防预警评估具有突出作用。

关键词： I型糖尿病血清谷胱氨酸脱羧酶抗体胰岛细胞自身抗体 C肽

Influence of N-doping on dielectric properties of carbon-coated copper nanocomposites in the microwave and terahertz ranges

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Journal of Materiomics 2022年第6期8卷 1131-1140页

作者： Feirong Huang Shuting Fan Yuqi Tian Xinghao Qu Xiyang Li maofan Qin Javid Muhammad Xuefeng Zhang Zhidong Zhang Xinglong Dong Key Laboratory of Materials Modification by Laser Ion and Electron Beams(Ministry of Education)School of Materials Science and EngineeringDalian University of TechnologyDalian116024China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen518060China Institute of Advanced Magnetic Materials College of Materials and Environmental EngineeringHangzhou Dianzi UniversityHangzhou110819China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang110015China

Carbon-coated Cu nanocomposites (Cu@C NCs) consisting of core-shell nanoparticles and nanorods weresynthesized by arc discharge plasma under an atmosphere of He and H_(2) gas, and the N-doping of themwas achieved by a post-treatment process using ureal as the precursor. The concentration of N in the Ndoped samples varies in the range of 0.62%-2.31 % (in mole), with a transformation from pyrrolic N tographitic N when increasing the relative content of ureal. Dielectric properties of the NCs without or withN-doping in the microwave and THz bands were investigated. The N-doped samples achieve theenhanced dielectric loss in both microwave and THz bands. In the microwave band, dielectric loss wasdominated by interfacial polarization, dipolar polarization, and conduction loss, while in the THz band,plasma resonance, ionic polarization and conduction loss are responsible for the dielectric loss, with astrong absorption characteristic dominated by conductive effect.

关键词： Cu/C nanocomposite Dielectric property N-doping Terahertz frequency