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ZnO-ITO/WO_(3-x)heterojunction structured memristor for optoelectronic co-modulation neuromorphic computation

Science China Materials 2024年第9期67卷 2838-2847页

作者： Jianyong Pan Tong Wu Wenhao Yang Yang Li Jiaqi Zhang Hao kan Shandong Provincial Key Laboratory of Network Based Intelligent Computing School of Information Science and EngineeringUniversity of JinanJinan250022China School of Integrated Circuits Shandong UniversityJinan250101China Key Laboratory of Automobile Materials Ministry of Education College of Materials Science and EngineeringJilin UniversityChangchun130012China

Traditional transistors confront severe challenges of insufficient computing capability and excessive power consumption in large-scale neuromorphic *** address these critical bottlenecks,we propose an optoelectronic memristor based on zinc oxide-indium tin oxide/tungsten oxide(ZnO-ITO/WO_(3-x))heterojunctions as a promising *** applying different types of electrical and optical signals,the device successfully emulates diverse synaptic functions including short-term/long-term synaptic plasticity,alongside short-term and long-term *** the ZnO-ITO functional layer enhances the photoresponse of the WO_(3-x)-based memristor and demonstrates“learning-forgetting-relearning”behavior under optical ***,based on the photoelectric cooperative memristor array,a convolutional neural network for vehicle type recognition is constructed,which solves the problem of zero weight and negative weight *** regard to energy efficiency,the neural network built with this device operates at a power level of only 10^(-3)W,representing a reduction of more than 4 orders of magnitude compared with a standard central ***,the photoelectric memristor proposed in this work provides a new idea for neuromorphic computing and is expected to promote the development of energy-efficient brain-like computing.

关键词： ZnO-ITO/WO_(3-x)heterojunction optoelectronic memristor synaptic plasticity neuromorphic computing convolutional neural network

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Research on the longitudinal protection of a through-type cophase traction direct power supply system based on the empirical wavelet transform

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Global Energy Interconnection 2024年第2期7卷 206-216页

作者： Lu Li Zeduan Zhang Wang Cai Qikang Zhuang Guihong Bi Jian Deng Shilong Chen Xiaorui kan Faculty of Electric Power Engineering Kunming University of Science and TechnologyKunming 650500P.R.China Brunel University London London UB83PHUnited Kingdom Yunnan Power Grid Co. Ltd.Kunming 650041P.R.China

This paper proposes a longitudinal protection scheme utilizing empirical wavelet transform(EWT)for a through-type cophase traction direct power supply system,where both sides of a traction network line exhibit a distinctive boundary *** approach capitalizes on the boundary’s capacity to attenuate the high-frequency component of fault signals,resulting in a variation in the high-frequency transient energy ratio when faults occur inside or outside the *** internal line faults,the high-frequency transient energy at the checkpoints located at both ends surpasses that of its neighboring ***,for faults external to the line,the energy is lower compared to adjacent *** is employed to decompose the collected fault current signals,allowing access to the high-frequency transient *** longitudinal protection for the traction network line is established based on disparities between both ends of the traction network line and the high-frequency transient energy on either side of the ***,simulation verification through experimental results demonstrates the effectiveness of the proposed protection scheme across various initial fault angles,distances to faults,and fault transition resistances.

关键词： Through-type Cophase traction direct power supply system Traction network Empirical wavelet transform(EWT) Longitudinal protection

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Design and optimization of an airflow-vibration sieving device for the effective cleaning of cyperus esculentus *** mixture

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International Journal of Agricultural and Biological Engineering 2024年第4期17卷 77-88页

作者： Shan Chen Shiguan An Za kan Lidong Huang Hewei Meng Jiangtao Qi Huijie Peng College of Mechanical and Electrical Engineering Shihezi UniversityShihezi 832000XinjiangChina Engineering Research Center for Production Mechanization of Oasis Special Economic Crop Ministry of EducationShihezi 832000XinjiangChina Guilin Mike Machinery Co. LtdGuilin 541000GuangxiChina

The threshing mixture of Cyperus esculentus(Tiger nut)planted in sandy areas is complex during harvesting,and there are problems of high impurity rate and high cleaning loss rate of the *** this paper,the threshing mixture of Cyperus esculentus is taken as the research object,and the suspension speed of each component is measured to design an“airflow+vibration”sieving *** the vector polygon method to explore the law of motion of the vibrating sieve,establish the force model of the seeds on the sieve surface,and analyze the conditions for the seeds to penetrate the *** to the principle of seeds penetrating the sieve and long stalks not penetrating the sieve,the geometric model of sieve blades opening degree adjustment mechanism is *** of the conditions under which long stalks can be thrown out of the *** experiment bench of the cleaning device was built,and the evaluation indexes were the rate of seed impurity and the rate of cleaning loss of the device,and the crank speed,sieve blades opening degree and fan speed were used as the experiment factors to study the influence law of each influencing factor on the evaluation index through single-factor *** response surface methodology to find the optimal combination of working parameters of the cleaning *** verify the device’s application on the combine harvester to improve the effectiveness of the cleaning operation of the Cyperus esculentus combine harvester.

关键词： sand cultivation Cyperus esculentus wind sieve type cleaning device optimization

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BCPT对CUS大鼠大脑皮质BDNF、Bax及海马超微结构的影响

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中国药理学通报 2007年第7期23卷 930-934页

作者：尹艳艳李春如阚红卫郑丽芳明亮安徽医科大学药理学教研室安徽合肥230032

目的观察细脚拟青霉代谢物提取物(BCPT)对慢性应激抑郁模型大鼠行为、海马组织超微结构、大脑皮质脑源性神经营养因子(BDNF)和Bax的影响。方法采用慢性不可预见性应激法(CUS)造成大鼠抑郁模型;采用Openfield法观测大鼠行为;采用免疫组... 详细信息

目的观察细脚拟青霉代谢物提取物(BCPT)对慢性应激抑郁模型大鼠行为、海马组织超微结构、大脑皮质脑源性神经营养因子(BDNF)和Bax的影响。方法采用慢性不可预见性应激法(CUS)造成大鼠抑郁模型;采用Openfield法观测大鼠行为;采用免疫组织化学的方法对BDNF和Bax进行染色,并用图像分析仪进行半定量分析;用电镜观察海马超微结构的变化情况。结果慢性应激抑郁模型大鼠水平和垂直运动次数明显减少,BDNF阳性神经元数目明显减少,Bax阳性神经元数目明显增加,电镜显示海马超微结构出现病理变化,而BCPT对其有明显的保护作用。结论BCPT具有抗抑郁作用,增加BDNF表达、降低Bax表达、改善海马超微结构的病理变化有关。

关键词：拟青霉慢性应激 BDNF Bax

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Recent Progress in All-Solution-Processed Organic Solar Cells

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Chinese Journal of Chemistry 2024年第2期42卷 190-198页

作者： Yixuan Xu Qian Wang Wentao Zou Xu Zhang Yanna Sun Yuanyuan kan Ping Cai Ke Gao School of Materials Science and Engineering&Guangxi Key Laboratory of Information Materials Guilin University of Electronic TechnologyGuilinGuangxi 541004China Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion Science Center for Material Creation and Energy ConversionInstitute of Frontier and Interdisciplinary ScienceShandong UniversityQingdaoShandong 266237China

All-solution-processed organic solar cells(OSCs)(from the bottom electrode to the top electrode)are highly attractive thanks to their low cost,lightweight and high-throughput ***,achieving highly efficient all-solution-processed OSCs remains a significant *** of the key issues is the lack of high-quality solution-processed electrode systems that can replace indium tin oxide(ITO)and vacuum-deposited metal *** this paper,we comprehensively review recent advances in all-solution-processed osCs,and classified the devices as the top electrode materials,including silver nanowires(AgNWs),conducting polymers and composite conducting *** correlation between electrode materials,properties of electrodes,and device performance in all-solution-processed OSCs is *** addition,the critical roles of the active layer and interface layer are also ***,the prospects and challenges of all-solution-processed OSCs are presented.

关键词： Organic solar cells All-solution-processed organic solar cells Solution-processed electrodes High performance Silver nanowires Conductive polymers Composite conducting materials

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基于层次标签结构的标记分布学习

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数据分析与知识发现 2024年第2期8卷 44-55页

作者：刘勘游美琳卫兰茜中南财经政法大学信息与安全工程学院武汉430073 中国移动通信集团四川有限公司成都610041

【目的】考虑到标记分布学习中标记之间具有层次结构关系,将层次标签结构引入标记分布学习,提升标记分布学习的效果。【方法】提出一种基于层次标签结构的标记分布学习算法(Hierarchy Label Distribution Learning Algorithm,H-LDL),根... 详细信息

【目的】考虑到标记分布学习中标记之间具有层次结构关系,将层次标签结构引入标记分布学习,提升标记分布学习的效果。【方法】提出一种基于层次标签结构的标记分布学习算法(Hierarchy Label Distribution Learning Algorithm,H-LDL),根据样本在各层次的标签,利用条件概率描述粗、细两个层次的结构关系,并通过层次加权损失函数及其优化策略调节层次间标记的准确分布。【结果】在两个公开数据集上进行实验,用了5个指标进行效果检测,其中,BU_3DFE数据集在Euclidean、Squared、K-L指标中较基线算法最低值分别降低了3.99%、1.07%、3.10%,Intersec和Fidelity指标较基线算法最高值分别提升了4.24%、0.67%,COMP数据集在Euclidean指标上降低了0.48%,在Squared、K-L指标未见明显降低,在Intersec和Fidelity指标上提升了0.45%、0.02%。【局限】仅考虑了标签之间粗层次和细层次两层结构关系,当标签具有其他更复杂的层次结构关系时需进一步研究。【结论】加入层次标签结构后标记分布误差有明显减小,有效提升了标记分布学习的效果。

关键词：层次结构标记分布学习层次标签条件概率

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心适注射液对犬脑组织血流量、脑血管阻力及脑组织抗氧化作用的影响

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中国实验方剂学杂志 2009年第6期15卷 56-58页

作者：阚红卫魏安祥于东安黄世福杨士友徐鹏夫安徽省药物研究所安徽合肥230022 安徽省中药研究与开发重点实验室安徽合肥230022 安徽大学生命科学学院安徽合肥230039 安徽省药品审评认证中心安徽合肥230022

目的:研究心适注射液(XSI)对麻醉犬脑组织血流量、脑血管阻力及脑组织超氧化物歧化酶(SOD),丙二醛(MDA)和一氧化氮(NO)含量的影响。方法:将健康犬分为生理盐水(NS)对照组,丹参注射液对照组和心适注射液高、中、低剂量组(4,2,***-1),3%... 详细信息

目的:研究心适注射液(XSI)对麻醉犬脑组织血流量、脑血管阻力及脑组织超氧化物歧化酶(SOD),丙二醛(MDA)和一氧化氮(NO)含量的影响。方法:将健康犬分为生理盐水(NS)对照组,丹参注射液对照组和心适注射液高、中、低剂量组(4,2,***-1),3%戊巴比妥钠麻醉后,分离左下肢股静脉,iv心适注射液,分离左颈总动脉测量颈内动脉血流量,分离左下肢股动脉测量平均动脉血压,计算后得出脑组织血流量和脑血管阻力。取脑组织,匀浆,分别测定SOD,MDA和NO含量。结果:心适注射液可显著增加脑组织血流量、降低脑血管阻力、升高脑组织SOD含量、降低MDA和NO含量。结论:心适注射液可改善犬脑部血流、扩张脑血管。

关键词：心适注射液脑组织血流量脑血管阻力抗氧化

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Adaptive Predefined-Time Backstepping Control for Grid Connected Photovoltaic Inverter

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Energy Engineering 2024年第8期121卷 2065-2083页

作者： Jiarui Zhang Dan Liu kan Cao Ping Xiong Xiaotong Ji Yanze Xu Yunfei Mu Key Laboratory of Smart Grid of Ministry of Education Tianjin UniversityTianjin300072China State Grid Hubei Electric Power Research Institute Wuhan430077China State Grid Hubei Electric Power Co. Ltd.Wuhan430077China

The system performance of grid-connected photovoltaic(PV)has a serious impact on the grid *** improve the control performance and shorten the convergence time,a predefined-time controller based on backstepping technology and dynamic surface control is formulated for the inverter in the grid-connected *** time-varying tuning functions are introduced into state-tracking errors to realize the predefined-time control *** address the“computational explosion problem”in the design process of backstepping control,dynamic surface control is adopted to avoid the analytical calculations of virtual *** disturbances of the PV system are estimated and compensated by adaptive *** control parameters are chosen and the global stability of the closed-loop is ensured by Lyapunov *** results confirm the effectiveness of the proposed controller and ensure the predefined time control in the photovoltaic inverter.

关键词： Photovoltaic inverter system backstepping technology predefined-time control adaptive control

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不同地区烟蚜对药剂的反应及其羧酸酯酶活性

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烟草科技 2006年第4期39卷 55-57页

作者：程新胜杨丽文魏重生彭怀俊阚宏伟中国科学技术大学烟草与健康研究中心合肥市美菱大道121号230052 福建省三明烟草分公司福建省三明市沙洲路7号365001 南宁卷烟厂南宁市北湖南路28号530001

测定了吡虫啉和氧化乐果对福建三明和安徽合肥地区烟蚜的毒力,并研究了两地烟蚜的羧酸酯酶活力、米氏常数和最大反应速度。结果表明:吡虫啉对两个地区烟蚜的生物活性远高于氧化乐果,三明地区烟蚜对两种药剂的敏感性均低于合肥地区的烟蚜... 详细信息

测定了吡虫啉和氧化乐果对福建三明和安徽合肥地区烟蚜的毒力,并研究了两地烟蚜的羧酸酯酶活力、米氏常数和最大反应速度。结果表明:吡虫啉对两个地区烟蚜的生物活性远高于氧化乐果,三明地区烟蚜对两种药剂的敏感性均低于合肥地区的烟蚜,种群毒力方程的b值也低于合肥烟蚜,烟蚜存在一定的异质性。两地烟蚜的羧酸酯酶活性、米氏常数和最大反应速度差异不显著。

关键词：烟蚜氧化乐果吡虫啉毒力羧酸酯酶

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Role of savolitinib in advanced gastric adenocarcinoma with meningeal carcinomatosis and cerebellar metastasis:A case report

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World Journal of Clinical Cases 2024年第15期12卷 2636-2641页

作者： Zhi-Yun Weng Wen-Ye Huang Bin-kan Shi Jian-Jia Pan Department of Hematology The Affiliated Yueqing Hospital of Wenzhou Medical UniversityYueqing 325600Zhejiang ProvinceChina

BACKGROUND Brain metastases(BM)are very rare in gastric adenocarcinoma(GaC),and patients with BMs have a higher mortality rate due to stronger tumor ***,its pathogenesis remains *** testing revealed cellular-mesenchymal epithelial transition factor receptor(MET)***,treatment with savolitinib,a small molecule inhibitor of c-Met,was *** SUMMARY A 66-year-old woman was diagnosed with advanced GaC 6 months prior to presentation due to back *** and meningeal metastases were observed during candonilimab combined with oxaliplatin and capecitabine *** patient experienced frequent generalized seizures and persistent drowsiness in the emergency *** testing of cerebrospinal fluid and peripheral blood revealed increased MET *** discussing treatment options with the patient,savolitinib tablets were *** a month of treatment,the intracranial lesions shrank *** BM is very rare in advanced GaC,especially in meningeal cancer,that is characterized by rapid disease *** are very few effective treatment options available;however,technological breakthroughs in genomics have provided a basis for personalized ***,MET amplification may be a key driver of BM in gastric cancer;however,this conclusion requires further investigation.

关键词： Cellular-mesenchymal epithelial transition factor receptor Savolitinib Meningeal carcinomatosis Gastric adenocarcinoma Case report

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