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Food Science and Human Wellness 2022年第5期11卷 1273-1281页

作者： Yue Yu Fusheng Pei zhanming li School of Grain Science and Technology Jiangsu University of Science and TechnologyZhenjiang 212004China

Plant flavonoids have received considerable attention for their health ***,structure-activity relationships between flavonoids such as orientin and vitexin with similar structures are rarely *** the present study,molecular docking study suggested that orientin and vitexin suppressed inflammatory responses through the modulation of the mitogen-activated protein kinase(MAPK)signaling ***,RAW264.7 cells with lipopolysaccharide-induced inflammation were used to evaluate the anti-inflammatory activities of orientin and vitexin,based on the inflammation-related cytokines production,quantitative real-time reverse transcription PCR,and western blotting *** a result,orientin or vitexin attenuated inflammatory responses through modulation of the MAPK/NF-κB signaling pathway by suppressing NF-κB translocation.

关键词： Anti-inflammatory Mitogen-activated protein kinase Plant extract NF-κB Molecular docking

Research of precise pulse plasma arc powder welding technology of thin-walled inner hole parts

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China Welding 2017年第3期26卷 57-62页

作者： li zhanming Du Xiaokun Sun Xiaofeng Song Wei Department of Equipment Maintenance and Remanufacturing Engineering Academy of Armored Force Engineering Department of Science Research Academy of Armored Force Engineering

The inner hole parts played an oriented or supporting role in engineering machinery and equipment,which are prone to appear surface damages such as wear,strain and corrosion. The precise pulse plasma arc powder welding method is used for surface damage repairing of inner hole parts in this paper. The working principle and process of the technology are illustrated,and the microstructure and property of repairing layer by precise pulse plasma powder welding and CO2 gas shielded welding are tested and observed by microscope,micro hardness tester and X-ray residual stress tester etc. Results showed that the substrate deformation of thin-walled inner hole parts samples by precise pulse plasma powder welding is relatively small. The repair layer and substrate is metallurgical bonding,the transition zones( including fusion zone and heat affected zone) are relatively narrow and the welding quality is good. It showed that the thin-walled inner hole parts can be repaired by this technology and equipment.

关键词： precise pulse plasma arc powder welding thin walled inner hole parts welding repairing layer

Friction Stir Processing of Thixoformed AZ91D Magnesium Alloy and Fabrication of Surface Composite Reinforced by SiC_ps

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Journal of Wuhan University of Technology(Materials Science) 2010年第2期25卷 223-227页

作者：陈体军 State Key Laboratory of Gansu Advanced Nonferrous Materials Lanzhou University of Technology

The microstructural evolution characteristics of the thermomechanically affected zone （TMAZ） alloy during friction stir processing （FSP） of thixoformed （TF） AZ91D alloy were investigated. Simultaneously, a surface composite layer reinforced by SiC particles （SiCps） was prepared on the alloy by FSP and the corresponding tribological properties were examined. The experimental results indicate that dynamic recrystallization and mechanical separation （including splitting and fracture of the primary grains） are the main mechanisms of grain refinement for the TMAZ. A composite surface reinforced by uniformly distributed SiCps was prepared on the alloy. Compared with the corresponding permanent mould casting alloy and the TF alloy without composite surface, the TF alloy with composite surface has the highest wear resistance and lowest friction coefficient.

关键词： friction stir processing thixoforming AZ91D alloy microstructure evolution composite surface tribological properties

基于神经网络视觉伺服的机器人模糊自适应阻抗控制

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电工技术学报 2011年第4期26卷 40-43,50页

作者：李二超李战明李炜兰州理工大学电气与信息工程学院兰州730050 甘肃省工业过程先进控制重点实验室兰州730050

提出一种未知环境下基于神经网络视觉伺服的机器人模糊自适应阻抗控制策略。首先使用BP神经网络来学习曲线图像特征变化率与机器人关节角速度的映射关系,其次由机器人力伺服控制得到离散阻抗控制模型,并根据接触力的变化对阻抗模型参数... 详细信息

提出一种未知环境下基于神经网络视觉伺服的机器人模糊自适应阻抗控制策略。首先使用BP神经网络来学习曲线图像特征变化率与机器人关节角速度的映射关系,其次由机器人力伺服控制得到离散阻抗控制模型,并根据接触力的变化对阻抗模型参数进行模糊调节,减少了受限运动中力干扰的影响。最后通过末端固定安装单摄像机和力传感器的6自由度机器人跟踪曲线实验,结果表明该策略具有较高的力控制精度和曲线跟踪能力。

关键词：机器人视觉阻抗控制模糊控制神经网络

IoT Based Greenhouse Real-Time Data Acquisition and Visualization through Message Queuing Telemetry Transfer (MQTT) Protocol

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Advances in Internet of Things 2021年第2期11卷 77-93页

作者： Vincent de Paul Niyigena Kwizera zhanming li Victus Elikplim Lumorvie Febronie Nambajemariya Xiaowei Niu School of Electrical and Information Engineering Lanzhou University of Technology Qilihe District Lanzhou China School of Computer and Communication Lanzhou University of Technology Qilihe District Lanzhou China School of Electronics and Information Engineering Lanzhou Jiaotong University Lanzhou China

One of the most indispensable needs of life is food and its worldwide availability endorsement has made agriculture an essential sector in recent years. As the technology evolved, the need to maintain a good and suitable climate in the greenhouse became imperative to ensure that the indoor plants are more productive hence the agriculture sector was not left behind. That notwithstanding, the introduction and deployment of IoT technology in agriculture solves many problems and increases crop production. This paper focuses mainly on the deployment of the Internet of Things (IoT) in acquiring real- time data of environmental parameters in the greenhouse. Various IoT technologies that can be applicable in greenhouse monitoring system was presented and in the proposed model, a method is developed to send the air temperature and humidity data obtained by the DHT11 sensor to the cloud using an ESP8266-based NodeMCU and firstly to the cloud platform Thing- Speak, and then to *** in which MQTT protocol was used for the reception of sensor data to the application layer referred as Human-Machine Interface. The system has been completely implemented in an actual prototype, allowing the acquiring of data and the publisher/subscriber concept used for communication. The data is published with a broker’s aid, which is responsible for transferring messages to the intended clients based on topic choice. Lastly, the functionality testing of MQTT was carried out and the results showed that the messages are successfully published.

关键词： Greenhouse Sensors Monitoring System Internet of Things (IOT) Thing-Speak Data Visualization MQTT Adafruit.IO MQTT Testing

Aldh2 deficiency plays a dual role in lung tumorigenesis and tumor progression

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Genes & Diseases 2024年第3期11卷 144-147页

作者： Hongjia Zhang Xueqian Sun zhanming li Tingting liu Fang Zhang Xinyu Meng Kaimi li Jianhua Xu Wei He Bo Jing Tong Wang Na Ni Beibei Sun Feng Yao Yadi Wu Qi Wang Jing Du Eugene Y.Chin Binhua P.Zhou Ping Jiang lishun Wang Jiong Deng Key Laboratory of Cell Differentiation and Apoptosis of Chinese Minister of Education Department of PathophysiologyShanghai Jiao Tong University School of MedicineShanghai 200025China Shanghai Key Laboratory for Tumor Microenvironment and Inflammation Shanghai Jiao Tong University School of MedicineShanghai200025China Department of Pathology Kunming Medical UniversityKunmingYunnan 650500China Medical Research Center Binzhou Medical University HospitalBinzhouShandong 256600China Center for Traditional Chinese Medicine and Gut Microbiota Minhang HospitalFudan UniversityShanghai 201100China Department of Radiation Oncology Yantai Affiliated Hospital of Binzhou Medical UniversityYantaiShandong 264100China Department of Pathology Molecular Pathology Research CenterPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China Department of Laboratory Medicine Shanghai Pulmonary Hospital Affiliated Tongji UniversityShanghai 200080China Department of Physiology School of Basic Medical SciencesWeifang Medical UniversityWeifangShandong 261021China Department of Thoracic Surgery Shanghai Chest HospitalShanghai Jiao Tong UniversityShanghai 200030China Department of Molecular and Celular Biochemistry Markey Cancer CenterUniversity of Kentucky College of MedicineLexingtonKY40506USA Department of Respiratory Medicine The Second Affiliated HospitalDalian Medical UniversityDalianLiaoning116023China Peninsular Cancer Center Binzhou Medical UniversityYantaiShandong 264003China

Alcohol consumption contributes to global mortality and cancer ***(ACE),the oxidized metabolite of alcohol,is highly reactive towards DNA,resulting in DNA *** can be detoxified to acetate by acetaldehyde dehydrogenase... 详细信息

关键词： mortality damage ALDH2

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矢量量化与神经网络相结合的说话人识别系统

计算机工程与应用 2006年第15期42卷 204-206,230页

作者：李战明王贞兰州理工大学电气工程与信息工程学院兰州730050

介绍了说话人识别系统的基本概念,在分析了传统VQ模型与神经网络模型的基础上,提出了一种VQ与神经网络相结合的说话人识别系统模型。通过提取出的特征参数(MFFC),建立系统模型,实验证明了该模型性能随着时间的变化有较好的稳定性。

关键词：说话人识别矢量量化神经网络特征提取

快速非局部均值形态成分分析唐卡图像修复算法

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计算机辅助设计与图形学学报 2014年第7期26卷 1067-1074页

作者：胡文瑾李战明刘仲民兰州理工大学电气工程与信息工程学院兰州730050 西北民族大学数学与计算机科学学院兰州730030

唐卡图像包含内容丰富、颜色复杂,使用基于形态成分分析(MCA)的图像修复算法修复图像时,增加全变分对恢复有毛糙边缘的分段光滑图像效果较好,但其很难有效利用图像全局冗余相似信息,并且易产生阶梯效应.针对该问题,提出一种快速的非局... 详细信息

唐卡图像包含内容丰富、颜色复杂,使用基于形态成分分析(MCA)的图像修复算法修复图像时,增加全变分对恢复有毛糙边缘的分段光滑图像效果较好,但其很难有效利用图像全局冗余相似信息,并且易产生阶梯效应.针对该问题,提出一种快速的非局部均值MCA唐卡图像修复算法.该算法利用像素周围固定大小窗口内的信息表征该像素的特征,使得像素估计结果能够很好地保留结构细节信息,即分解后的结构部分具有更稀疏的梯度,使得后续的迭代分离效果更加优良;同时,使用该算法有效地减少了区域内不相关像素权值的计算,降低了算法的复杂度.对于唐卡图像中出现的折痕、斑块状破损以及部分信息缺失的修复实验结果表明,文中算法具有良好的修复能力.

关键词：图像修复形态成分分析全局信息冗余性非局部均值快速计算

面向智能电网通信系统的数据聚合和访问控制方法

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电力系统自动化 2016年第14期40卷 135-144页

作者：刘雪艳张强李战明曹素珍兰州理工大学电气工程与信息工程学院甘肃省兰州市730050 西北师范大学数学与统计学院甘肃省兰州市730070 西北师范大学计算机科学与工程学院甘肃省兰州市730070 国网甘肃省电力公司电力科学研究院甘肃省兰州市730050

安全的通信架构是保证智能电网安全、稳定运行的基础,隐私保护的数据聚合是保证机密性、提高效率的有效途径。提出了一种面向智能电网通信系统的数据聚合和访问控制方法。在聚合阶段,采用隐私同态聚合多维数据,尤其提供签名批验证,使得... 详细信息

安全的通信架构是保证智能电网安全、稳定运行的基础,隐私保护的数据聚合是保证机密性、提高效率的有效途径。提出了一种面向智能电网通信系统的数据聚合和访问控制方法。在聚合阶段,采用隐私同态聚合多维数据,尤其提供签名批验证,使得对计算的个数与聚合的签名数无关,保持为常量3;在反馈阶段,采用基于属性的加密方法,实现了一对多的通信,同时也实现了对用户区分的访问控制,只有满足相应属性要求的用户才能获得操作命令。安全性分析证明,该方案具有隐私保护、资源认证和完整性验证的功能;通过与相关方案比较,所述方案在计算开销和用户的访问控制方面更有优势,更适合智能电网多维数据收集和访问控制。

关键词：智能电网隐私聚合访问控制基于属性的加密

高速微粒轰击对微弧氧化铝合金疲劳性能的影响

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稀有金属材料与工程 2018年第7期47卷 2179-2184页

作者：李占明王红美孙晓峰邱骥装甲兵工程学院北京100072

以获取高性能微弧氧化陶瓷膜,且不降低基体铝合金的抗疲劳性能为目标,采用高速微粒轰击处理工艺和微弧氧化处理工艺制备了未处理、高速微粒轰击处理、微弧氧化处理、高速微粒轰击+微弧氧化处理复合处理4种状态的试样,通过疲劳试验机对... 详细信息

以获取高性能微弧氧化陶瓷膜,且不降低基体铝合金的抗疲劳性能为目标,采用高速微粒轰击处理工艺和微弧氧化处理工艺制备了未处理、高速微粒轰击处理、微弧氧化处理、高速微粒轰击+微弧氧化处理复合处理4种状态的试样,通过疲劳试验机对其疲劳寿命进行了测试;同时,采用TEM和XRD残余应力测试仪等分析方法对试样的表层微观组织结构和残余应力进行了观察与测试。结果表明:加载载荷较高时,4种试样疲劳寿命基本相同,寿命较短;加载载荷较低时,微弧氧化处理铝合金的疲劳寿命明显低于未处理试样,高速微粒轰击处理导致的微观组织结构细化和形成的残余压应力可以有效抑制疲劳裂纹的萌生和扩展,使未处理和微弧氧化铝合金的疲劳寿命均得到有效提高,这2种高速颗粒轰击处理过的试样的疲劳寿命均高于未处理试样,这表明高速颗粒轰击强化处理可有效提高低应力水平时微弧氧化铝合金的疲劳寿命。

关键词：铝合金高速微粒轰击微弧氧化疲劳性能