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基于功率曲线分析与神经网络的风电机组故障预警方法

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中国测试 2020年第8期46卷 44-50页

作者：乔福宇马良玉马永光华北电力大学自动化系河北保定071003

为尽早发现风电机组早期故障,减少风电场的运维成本,提出一种基于功率曲线分析与神经网络的故障预警方法。首先,依据功率特性曲线,使用最小二乘与离散度分析结合的算法对SCADA数据进行筛选,以保留符合机组正常工况的数据作为建模的训练... 详细信息

为尽早发现风电机组早期故障,减少风电场的运维成本,提出一种基于功率曲线分析与神经网络的故障预警方法。首先,依据功率特性曲线,使用最小二乘与离散度分析结合的算法对SCADA数据进行筛选,以保留符合机组正常工况的数据作为建模的训练数据,从而提高模型的精度。然后,使用随机森林算法筛选模型的输入参数以简化模型结构,并通过对比隐含层的数目建立风电机组的神经网络模型。最后,结合滑动窗口模型,提出一种能反映机组实时运行状态的指标,并通过非参数估计法确定该指标的阈值,以实现状态预警及在线监测。该方法充分利用SCADA数据,且不需要对风电机组复杂的物理特性进行分析。将该方法分别用于某风电场的变桨系统和偏航系统的故障预警,实验结果是分别提前18.5 h和28.4 h出现预警信号,进一步证明方法的有效性。

关键词：风电机组故障预警神经网络状态识别功率曲线

Comprehensive and deep profiling of the plasma proteome with protein corona on zeolite NaY

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Journal of Pharmaceutical Analysis 2023年第5期13卷 503-513页

作者： Congcong ma Yanwei Li Jie Li Lei Song liangyu Chen Na Zhao Xueping Li Ning Chen Lixia Long Jin Zhao Xin Hou Li Ren Xubo Yuan Tianjin Key Laboratory of Composite and Functional materials School of Materials Science and EngineeringTianjin UniversityTianjin300350China Department of Integrative Oncology Tianjin Medical University Cancer Institute and Hospital and Key Laboratory of Cancer Prevention and TherapyTianjin300060China Department of Proteomics Tianjin Key Laboratory of Clinical Multi-omicsTianjin300308China Department of Clinical Laboratory Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjin's Clinical Research Center for CancerTianjin300060China

Proteomic characterization of plasma is critical for the development of novel pharmacodynamic ***,the vast dynamic range renders the profiling of proteomes extremely ***,we synthesized zeolite NaY and developed a simple and rapid method to achieve comprehensive and deep profiling of the plasma proteome using the plasma protein corona formed on zeolite ***,zeolite NaY and plasma were co-incubated to form plasma protein corona on zeolite NaY(NaY-PPC),followed by conventional protein identification using liquid chromatography-tandem mass *** was able to significantly enhance the detection of low-abundance plasma proteins,minimizing the“masking”effect caused by high-abundance *** relative abundance of middleand low-abundance proteins increased substantially from 2.54%to 54.41%,and the top 20 highabundance proteins decreased from 83.63%to 25.77%.Notably,our method can quantify approximately 4000 plasma proteins with sensitivity up to pg/mL,compared to only about 600 proteins identified from untreated plasma samples.A pilot study based on plasma samples from 30 lung adenocarcinoma patients and 15 healthy subjects demonstrated that our method could successfully distinguish between healthy and disease *** summary,this work provides an advantageous tool for the exploration of plasma proteomics and its translational applications.

关键词： NaY Plasma proteomics Protein corona Low-abundance proteins

Electrochemical CO_(2) mineralization for red mud treatment driven by hydrogen-cycled membrane electrolysis

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Chinese Journal of Chemical Engineering 2022年第3期35卷 14-23页

作者： Heping Xie Yunpeng Wang Tao Liu Yifan Wu Wenchuan Jiang Cheng Lan Zhiyu Zhao liangyu Zhu Dongsheng Yang School of Chemical Engineering Sichuan UniversityChengdu 610065China Institute of Deep Earth Science and Green Energy Shenzhen UniversityShenzhen 518060China Institute of New Energy and Low-Carbon Technology Sichuan UniversityChengdu 610065China State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500China

CO_(2)mineralization as a promising CO_(2)mitigation strategy can employ industrial alkaline solid wastes to achieve net emission reduction of atmospheric CO_(2).The red mud is a strong alkalinity waste residue produced from the aluminum industry by the Bayer process which has the potential for the industrial CO_(2)large scale ***,limited by complex components of red mud and harsh operating conditions,it is challenging to directly mineralize CO_(2)using red mud to recover carbon and sodium resources and to produce mineralized products simultaneously with high economic value ***,we propose a novel electrochemical CO_(2)mineralization strategy for red mud treatment driven by hydrogen-cycled membrane electrolysis,realizing mineralization of CO_(2)efficiently and recovery of carbon and sodium resources with economic *** system utilizes H_(2)as the redox-active proton carrier to drive the cathode and anode to generate OH^(-) and H^(+) at low voltage,*** H^(+) plays as a neutralizer for the alkalinity of red mud and the OH^(-) is used to mineralize CO_(2)into generate highpurity NaHCO_(3)*** verify that the system can effectively recover carbon and sodium resources in red mud treatment process,which shows that the average electrolysis efficiency is 95.3%with highpurity(99.4%)NaHCO_(3)product *** low electrolysis voltage of 0.453 V is achieved at10 ma·cm^(-2) in this system indicates a potential low energy consumption industrial ***,we successfully demonstrate that this process has the ability of direct efficient mineralization of flue gas CO_(2)(15%volume)without extra capturing,being a novel potential strategy for carbon neutralization.

关键词： CO_(2)mineralization Red mud Electrolysis Waste treatment Flue gas

Natural nori-based porous carbon composite for sustainable lithium-sulfur batteries

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Science China(Technological Sciences) 2022年第10期65卷 2380-2387页

作者： LIU Hu LIU WeiLin MENG FanCheng JIN liangyu LI ShuLin CHENG Sheng JIANG ShuDong ZHOU RuLong LIU JieHua School of materials Science and Engineering Hefei University of TechnologyHefei 230009China Instrumental Analysis Centre Hefei University of TechnologyHefei 230009China College of Chemistry and Chemical Engineering Anhui UniversityHefei 230601China

The practical applications of lithium-sulfur(Li-S)batteries are limited by the low conductivity of sulfur and the shuttle effect of soluble polysulfides during the charge-discharge *** the same time,biomass-based carbon materials have been acknowledged as the cost-effective and direct settlement to mitigate or overcome these problems due to their renewability,facile processing,and pollution-free ***,in this work,we report the natural nori-based CoO nanoparticles decorated hierarchical porous carbon(HPC)for high-capacity Li-S battery *** HPC with an extremely high surface area of 2089 m^(2)g^(−1)provides a good substrate for the accommodation of CoO nanoparticles,which can effectively seize the lithium polysulfides and facilitate their redox *** a result,the CoO-HPC/S cathode exhibits a high discharge capacity of 1557.1 ma h g^(−1),as well as excellent rate performance and cycling *** to the naturally abundant nori-based cathode materials,the resultant Li-S battery is supposed to be an attractive and sustainable energy storage device.

关键词： biomass sustainable porous carbon cathode Li-S battery

A Robust Roll Stabilization Controller with Aerodynamic Disturbance and Actuator Failure Consideration

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Computer Modeling in Engineering & Sciences 2020年第1期122卷 109-130页

作者： Qiancai ma Fengjie Gao Yang Wang Qiuxiong Gou liangyu Zhao School of Aerospace Engineering Beijing Institute of TechnologyBeijing100081China Hiwing Aviation General Equipment Co.Ltd. Beijing100074China Xi’an Modern Control Technology Research Institute Xi’an710054China

Combining adaptive theory with an advanced second-order sliding mode control algorithm,a roll stabilization controller with aerodynamic disturbance and actuator failure consideration for spinning flight vehicles is proposed in this *** presented controller is summarized as an“observer-controller”*** specifically,an adaptive secondorder sliding mode observer is presented to select the proper design parameters and estimate the knowledge of aerodynamic disturbance and actuator failure,while the proposed roll stabilization control scheme can drive both roll angle and rotation rate smoothly converge to the desired *** analysis and numerical simulation results demonstrate the effectiveness of the proposed controller.

关键词： Roll stabilization fault-tolerant control aerodynamic disturbance actuator failure precision strike

自噬蛋白(ATG13)激活IFN表达的机制研究

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特产研究 2024年第4期46卷 54-62,71页

作者：杨光美韦泽艳林馨李良玉王燮同刘俊林赵永清马晓霞西北民族大学生命科学与工程学院甘肃兰州730010 西北民族大学生物医学研究中心甘肃兰州730030

自噬相关蛋白基因13(Autophagy-related gene 13,atg13)在细胞自噬的发生过程中发挥着关键作用。然而,其在激活干扰素(Interferon-,IFN-)的过程中所发挥的作用尚未阐明。基于对atg13基因的物种特异性的遗传特征,本研究选取人源atg13基... 详细信息

自噬相关蛋白基因13(Autophagy-related gene 13,atg13)在细胞自噬的发生过程中发挥着关键作用。然而,其在激活干扰素(Interferon-,IFN-)的过程中所发挥的作用尚未阐明。基于对atg13基因的物种特异性的遗传特征,本研究选取人源atg13基因及人源胚胎肾细胞系(human embryonic kidney cell line,HEK293T),作为研究atg13基因过表达与目标细胞中激活IFN-信号通路的试验平台。结果表明,atg13基因在刺激IFN-产生的能力方面明显强于其激活IFN-的活性。虽然atg13基因与IFN信号通路中的不同信号分子(MyD88,IKK,TRAF6和IRF7)在转录及翻译水平上均有不同程度的相关性,但atg13基因过表达从而激活IRF7的磷酸化是IFN-产生的关键因素。此外,ATG13蛋白与干扰素刺激应答原件(Interferon-stimulated response element,ISRE)的强烈互作也是atg13基因过表达激活IFN-产生的重要环节。

关键词：自噬相关蛋白基因13 干扰素信号通路磷酸化干扰素刺激应答原件

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“一点两线三面”创新实验平台的构建与实践

大学化学 2024年第4期39卷 26-32页

作者：龚良玉王杰杜丰玉徐鲁斌马传利颜世海宋祖伟刘福恒王修中青岛农业大学化学与药学院山东青岛266109 青岛农业大学实验室管理中心山东青岛266109

传统化学实验室功能单一、分布零散、共享性差,导致实验用房和实验设备利用效率低,这种建设模式不利于多学科知识的交叉融合,一定程度上影响学生综合素质的发展。本研究秉承“建优质平台,抓实践育人,树创新理念,育创新人才”的指导思想... 详细信息

传统化学实验室功能单一、分布零散、共享性差,导致实验用房和实验设备利用效率低,这种建设模式不利于多学科知识的交叉融合,一定程度上影响学生综合素质的发展。本研究秉承“建优质平台,抓实践育人,树创新理念,育创新人才”的指导思想,在化学实验室资源整合共享、利用率提升、开放式管理以及创新应用型人才培养质量提升等方面积极进行教学改革,经过多年探索,搭建起“以提升学生创新实践能力为着力点”“教学科研两条主线”“教学科研三层面”的创新实验(训)平台,取得了一定成效,将为同类高校的创新实验(训)平台建设提供参考。

关键词：创新型应用型一点两线三面实验(训)平台

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光稃茅香典型植物群落结构及其多样性对土壤含水率的响应

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高原科学研究 2024年第1期8卷 9-17页

作者：吕亮雨蔡宗程施建军雷莎清王琛青海大学畜牧兽医科学院青海西宁810016 青海大学昆仑学院青海西宁810016

文章以5种不同土壤含水率下的光稃茅香群落为研究对象,分析了群落的物种组成、物种重要值和多样性指数。结果表明:5个群落共有15种植物,属11科14属,植物群落优势种分别为光稃茅香(Antho-xanthum glabrum)、光稃茅香(Anthoxanthum glabru... 详细信息

文章以5种不同土壤含水率下的光稃茅香群落为研究对象,分析了群落的物种组成、物种重要值和多样性指数。结果表明:5个群落共有15种植物,属11科14属,植物群落优势种分别为光稃茅香(Antho-xanthum glabrum)、光稃茅香(Anthoxanthum glabrum)+短穗兔耳草(Lagotis brachystachya)、光稃茅香(An-thoxanthum glabrum)+西藏沙棘(Hippophae thibetana)+冷蒿(Artemisia frigida)+多裂委陵菜(Potentilla mul-tifida)、光稃茅香(Anthoxanthum glabrum)+短穗兔耳草(Lagotis brachystachya)、光稃茅香(Anthoxan-thum glabrum)+赖草(Leymus secalinus)+冷蒿(Artemisia frigida)。该研究选取的样地3的光稃茅香群落丰富度指数ma、Simpson多样性指数D、Shannon-Wiener指数H达到最大,分别为1.53、0.58、1.38,明显高于其他4个样地(P<0.05);样地5的Pielou均匀度指数J和物种优势度指数d最大,分别为0.63、1.78。样地1的地上生物量最大,达到857.3g·m^(-2),较样地2、样地3、样地4、样地5分别高46.47%、112.35%、192.27%、506.60%,差异显著(P<0.05)。综上所述,土壤含水率的不同可能是驱动草本植物群落结构及其多样性和生物量变化的重要因素。

关键词：三江源区光稃茅香群落结构物种组成物种多样性

New electrochemical energy storage systems based on metallic lithium anode the research status,problems and challenges of lithium-sulfur,lithium-oxygen and all solid state batteries

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Science China Chemistry 2017年第11期60卷 1402-1412页

作者： liangyu Li Chunguang Chen Aishui Yu Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsInstitut of New EnergyCollaborative Innovation Center of Chemistry for Energy MaterialsFudan UniversityShanghai 200438China

Li-ion batteries have played a key role in the portable electronics and electrification of transport in modern society. Nevertheless,the limited highest energy density of Li-ion batteries is not sufficient for the long-term needs of society. Since lithium is the lightest metal among all metallic elements and possesses the lowest redox potential of.3.04 V vs. standard hydrogen electrode, it delivers the highest theoretical specific capacity of 3860 ma h g^(-1) and a high working voltage of full batteries which causes a great interest in electrochemical energy storage systems. Lithium-sulfur, lithium-oxygen and corresponding all solid state batteries based on metal lithium anode have received widely attention owing to their high energy densities. However, the problems in the cathode,electrolyte and anode of these three systems restrict their practical application. In this review, the research status and problems of these three energy storage systems are summarized and the challenges and future perspectives are also outlined.

关键词：氧化还原电位全固态电池储能系统金属锂电化学负极高能量密度锂离子电池