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电力安全技术 2023年第9期25卷 17-19页

作者：王连辉张世炼国网福建省电力有限公司福建福州350001

通过高压电力电缆及相关附件的典型案例,从安装工艺质量、绝缘老化、运行工况恶劣、自身材料质量等四个方面分析其故障原因,并针对性提出预防措施,从而降低高压电力电缆的缺陷率,提升电缆安全可靠性。

关键词：电力电缆缺陷安装工艺绝缘老化

Analysis of genetic diversity and population structure of peanut cultivars and breeding lines from China,India and the US using simple sequence repeat markers

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Journal of Integrative Plant Biology 2016年第5期58卷 452-465页

作者： Hui Wang Pawan Khera Bingyan.Huang Mei Yuan Ramesh Katam Weijian Zhuang Karen Harris-Shultz Kim M.Moore Albert K.Culbreath Xinyou zhang Rajeev K.Varshney lianhui Xie Baozhu Guo Fujian Agricultural and Forestry University College of Plant ProtectionFuzhou 350002China Department of Plant Pathology University of GeorgiaTiftonGA 31794USA USDA-ARS Crop Protection and Management Research UnitTiftonGA 31794USA Shandong Peanut Research Institute qingdao 266100China International Crops Research Institute for the Semi-Arid Tropics(ICRISAT) Patancheru 502324India Henan Academy of Agricultural Sciences Cash Crops Research InstituteZhengzhou 450002China Department of Biological Sciences Florida A&M UniversityTallahasseeFL 32307USA Fujian Agricultural and Forestry University College of Crop ScienceFuzhou 350002China USDA-ARS Crop Genetics and Breeding Research UnitTiftonGA 31794USA AgResearch Consultants Shingler Little River RoadSumnerGA 31789USA

Cultivated peanut is grown worldwide as rich- source of oil and protein. A broad genetic base is needed for cultivar improvement. The objectives of this study were to develop highly informative simple sequence repeat （SSR） markers and to assess the genetic diversity and popuJation structure of peanut cultivars and breeding lines from different breeding programs in China, India and the US. A total of 111 SSR markers were selected for this study, resulting in a total of 472 alleles. The mean values of gene diversity and polymorphic information content （PIC） were 0.480 and o.429, respectively. Country-wise analysis revealed that alleles per locus in three countries were similar. The mean gene diversity in the US, China and India was 0.363, o.489 and 0.47 with an average PIC of 0.323, 0.43 and o.412, respectively. Genetic analysis using the STRUCTURE divided these peanut lines into two populations （P1, P2）, which was consistent with the dendro- gram based on genetic distance （G1, G2） and the clustering of principal component analysis. The groupings were related to peanut market types and the geographic origin with a few admixtures. The results could be used by breeding programs to assess the genetic diversity of breeding materials to broaden the genetic base and for molecular genetics studies.

关键词： Arachis hypogaea breeding genetic diversity populationstructure simple sequence repeat

Research and Application of Process Appraisement Method in General Assembly Field

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Research and Application of Process Appraisement Method in G...

2021中国汽车工程学会年会暨展览会

作者： Yan Jieshi Cong Liguo Feng lianhui zhang Chuanyu China FAW Group CO. LTD

In the process of automobile design and development and assembly production,process appraisement plays an important *** paper studies the process appraisement method from the concept,work content,standard process and review elements of process appraisement,systematically expounds the objectives and significance of process appraisement,and proposes accurate and effective evaluation methods for the current situation of the industry in the field of general assembly,forms the General Assembly review specification,and demonstrates the role of digital technology in the process of process appraisement through application examples,open up new ideas of process appraisement,and point out the application process and effect of the evaluation method.

关键词： process appraisement standard process passing evaluation process evaluation

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分频输电系统运行特性与控制策略综述

高电压技术 2023年第9期49卷 3696-3707页

作者：王秀丽段子越孟永庆赵勃扬张海涛宁联辉丁超西安交通大学电气工程学院西安710049 国网浙江省电力有限公司电力科学研究院杭州310000

在中国“碳达峰、碳中和”目标的驱动下,电力系统向着低碳清洁、高效智能的方向发展。当大规模可再生能源接入电力系统后,现有电力网络出现了传输能力不足的问题。分频输电系统采用较低频率输送电能,相比同电压等级的工频系统,其线路输... 详细信息

在中国“碳达峰、碳中和”目标的驱动下,电力系统向着低碳清洁、高效智能的方向发展。当大规模可再生能源接入电力系统后,现有电力网络出现了传输能力不足的问题。分频输电系统采用较低频率输送电能,相比同电压等级的工频系统,其线路输送能力得到大幅度提升,目前已经在包含中远距离海上风电,“沙戈荒”偏远地区陆上风电、光伏发电和大规模水电输送等在内的可再生能源高效汇集送出领域受到广泛关注。为此,首先介绍了分频输电的基本原理并概述了核心变频设备的运行特性。在高比例可再生能源接入与高比例电力电子设备应用的“双高”背景下,进一步从系统稳态运行和故障穿越两个方面,综合阐述了“点对点”双端和多端互联分频输电系统的运行特性以及控制策略的典型设计方法。最后,就分频输电系统运行控制研究中需要进一步结合的输电频率经济性优选,小/大干扰系统稳定性分析和城市电网扩容改造等问题进行了展望。

关键词：分频输电系统模块化多电平交交变频器运行特性控制策略多端分频互联系统

基于3D Octave卷积和Bi-RNN注意力网络的高光谱图像分类方法

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光子学报 2021年第9期50卷 276-288页

作者：梁联晖李军张绍泉湖南大学电气与信息工程学院长沙410082 中山大学地理科学与规划学院广州510275

传统卷积神经网络模型在高光谱图像分类生成特征图的空间维度中存在大量的空间特征信息冗余,而且把高光谱图像单个像元上的光谱带数据看作是无序高维向量进行数据处理,并不符合光谱数据的特性,极大影响了模型的运行效率和分类性能。针... 详细信息

传统卷积神经网络模型在高光谱图像分类生成特征图的空间维度中存在大量的空间特征信息冗余,而且把高光谱图像单个像元上的光谱带数据看作是无序高维向量进行数据处理,并不符合光谱数据的特性,极大影响了模型的运行效率和分类性能。针对该问题,提出一种三维Octave卷积和双向循环神经网络注意力网络相结合的高光谱图像分类方法。首先,利用三维Octave卷积获取高光谱图像的空间特征的同时减少空间特征冗余信息。其次,利用Bi-RNN光谱注意力网络将光谱带数据视为有序序列以获取高光谱图像的光谱信息。然后,通过全连接层将空间和光谱特征图连接起来实现特征融合。最后,经过softmax输出分类结果。实验结果表明,所提方法在Pavia University和Botswana两个数据集上的分类精度分别达到了99.97%和99.79%,与其他主流算法相比,该方法可以充分利用空间和光谱特征信息,具有更佳的分类性能。

关键词：高光谱图像分类卷积神经网络三维Octave卷积双向循环神经网络注意力网络

Stretchable,self-healing,transient macromolecular elastomeric gel for wearable electronics

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Microsystems & Nanoengineering 2019年第1期5卷 583-592页

作者： Mingming Hao lianhui Li Shuqi Wang Fuqin Sun Yuanyuan Bai Zhiguang Cao Chunyan Qu Ting zhang i-Lab Key Laboratory of multifunctional nanomaterials and smart systemsSuzhou Institute of Nano-tech and Nano-bionicsChinese Academy of Sciences215123 SuzhouChina Nano Science and Technology Institute University of Science and Technology of China96 Jinzhai Road230026 HefeiAnhuiChina

Flexible and stretchable electronics are emerging in mainstream technologies and represent promising directions for future *** stretchable materials with a self-healing ability to resist mechanical damage are highly desirable but remain challenging to ***,we report a stretchable macromolecular elastomeric gel with the unique abilities of not only self-healing but also transient properties at room *** inserting small molecule glycerol into hydroxyethylcellulose(HEC),forming a glycerol/hydroxyethylcellulose(GHEC)macromolecular elastomeric gel,dynamic hydrogen bonds occur between the HEC chain and the guest small glycerol molecules,which endows the GHEC with an excellent stretchability(304%)and a self-healing ability under ambient ***,the GHEC elastomeric gel is completely water-soluble,and its degradation rate can be tuned by adjusting the HEC molecular weight and the ratio of the HEC to *** demonstrate several flexible and stretchable electronics devices,such as self-healing conductors,transient transistors,and electronic skins for robots based on the GHEC elastomeric gel to illustrate its multiple functions.

关键词： healing transient wear

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超灵敏、宽频域新型柔性仿生振动传感器

中国科学：技术科学 2017年第6期47卷 632-638页

作者：李连辉顾杨徐甲强张珽上海大学理学院化学系上海200444 中国科学院苏州纳米技术与纳米仿生研究所苏州215123

信息化社会对电子产品的柔性化、便携性(轻薄、可折叠、可穿戴)的需求日益增加,最近的研究表明,利用碳纳米管优异的电学、力学特性和纳米尺度效应而设计出的柔性纳米传感器表现出更高的灵敏度、更快速的响应-恢复时间等优异的特性.本文... 详细信息

信息化社会对电子产品的柔性化、便携性(轻薄、可折叠、可穿戴)的需求日益增加,最近的研究表明,利用碳纳米管优异的电学、力学特性和纳米尺度效应而设计出的柔性纳米传感器表现出更高的灵敏度、更快速的响应-恢复时间等优异的特性.本文基于多壁碳纳米管(multiwalled carbon nanotube,MWNT)复合材料,采用一种简单喷涂成膜的方法制备了具有空腔结构的柔性仿生振动传感器,该柔性仿生振动传感器时间分辨短(22.7μs),信噪比高(55 dB),检测范围宽(20~22000 Hz),可以高质量地实时检测并记录声音信息,在声音检测以及构筑电子耳膜来治疗耳膜损伤导致的耳聋等方面提供了新的可能性方案.

关键词：振动传感器赫姆霍兹共振电子耳膜柔性仿生

睡眠时间与脑卒中发病相关性的研究进展(综述)

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中国健康心理学杂志 2023年第12期31卷 1779-1785页

作者：薛晶元小冬邢爱君王连辉马倩张萍淑华北理工大学附属开滦总医院神经内科实验室河北唐山063000 河北省神经生物机能重点实验室华北理工大学附属开滦总医院心内科

脑卒中是一组以突然发生的局限性血管源性或弥散性神经功能缺损为主的脑血管疾病,是全球范围内致死和致残的主要原因,成为患者家庭乃至全社会的一项沉重负担,大量流行病学调查显示,睡眠时间改变与脑卒中的关系是复杂而双向的。本文评述... 详细信息

脑卒中是一组以突然发生的局限性血管源性或弥散性神经功能缺损为主的脑血管疾病,是全球范围内致死和致残的主要原因,成为患者家庭乃至全社会的一项沉重负担,大量流行病学调查显示,睡眠时间改变与脑卒中的关系是复杂而双向的。本文评述了睡眠时间导致脑卒中发病的研究进展和可能发生的机制,得出了日、夜间睡眠时长、睡眠剥夺的改变可影响脑卒中发病率,指出神经内分泌应激系统活动、睡眠结构、炎症系统等是脑卒中可能的潜在发病机制,旨在加强临床医生和患者对睡眠时间的重视,为积极预防高危因素脑卒中患者提供参考。

关键词：脑卒中睡眠时间流行病学发病机制综述

Bio-inspired flexible artificial synapses for pain perception and nerve injuries

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npj Flexible Electronics 2020年第1期4卷 28-35页

作者： Qifeng Lu Fuqin Sun Lin Liu lianhui Li Mingming Hao Zihao Wang Ting zhang i-lab Key Laboratory of multifunctional nanomaterials and smart systemsSuzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of Sciences(CAS)398 Ruoshui Road215123 SuzhouPeople’s Republic of China Department of Health and Environmental Sciences Xi’an Jiaotong Liverpool University111 Ren’ai Road215123 SuzhouPeople’s Republic of China

Imitation of the perception system of living creatures is of great importance for the construction of artificial nerves and intelligent human-machine ***,a prominent challenge is to emulate the functions of the biological synapse,which is the basic building block of the neural ***,inspired by the pain perception mechanism of the living creatures,a flexible double-layer memristor was constructed,with 90%semiconducting single-wall carbon nanotubes(s-SWCNTs)covered by LiClO4 doped polyoxyethylene oxide(PEO:LiClO4)as the channel *** carriers(protons and Li+)from PEO:LiClO4 imitated the functions of Na+and K+in biological systems.A potentiation of the post-synaptic signal was observed with mild stimuli,while the post-synaptic signal was inhibited with severe stimuli with a pulse voltage larger than 1.4 V in this *** behaviors resemble the sensation of pain,neuroprotection,and possible injuries to the neural *** explore the underlying mechanism of the phenomenon,the fourier-transform infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS),Raman spectrum,and current(IV)sweep were carried *** was inferred that the observed results are attributable to the interaction between carriers in PEO:LiClO4 and functional groups and defects in the *** enhanced channel current results from the fulfillment of the traps by the carriers,and the suppression of the current is due to the intercalation of Li+in the *** flexible artificial synapse opens a new avenue for the construction of biocompatible electronic devices towards artificial intelligence systems.

关键词： materials artificial injuries

α1肾上腺素受体阻滞剂降低大鼠门静脉高压的实验研究

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中华消化杂志 2022年第5期42卷 336-339页

作者：李振王广川王思宁赵连晖张春清山东第一医科大学附属省立医院消化内科济南250021

目的观察α1肾上腺素受体(α1AR)阻滞剂能否降低和拮抗α1AR激活导致的大鼠门静脉高压,为临床治疗门静脉高压提供新思路。方法α1AR激动剂选用去氧肾上腺素,α1AR阻滞剂选用阿呋唑嗪,采用门静脉穿刺注射给药并测量门静脉压力。将32只雄... 详细信息

目的观察α1肾上腺素受体(α1AR)阻滞剂能否降低和拮抗α1AR激活导致的大鼠门静脉高压,为临床治疗门静脉高压提供新思路。方法α1AR激动剂选用去氧肾上腺素,α1AR阻滞剂选用阿呋唑嗪,采用门静脉穿刺注射给药并测量门静脉压力。将32只雄性Sprague-Dawley大鼠按随机数字表法分为4组。所有大鼠均在给药前测量基础门静脉压力;对照组大鼠按体重经门静脉注射0.9%氯化钠溶液(1 L/g),门静脉高压模型组大鼠经门静脉注射去氧肾上腺素(1.5μg/g),以上两组在给药5和10 min后分别测量门静脉压力;阿呋唑嗪治疗组大鼠经门静脉予去氧肾上腺素(1.5μg/g)5 min后测压,再予阿呋唑嗪(0.9μg/g),在5 min后再次测压;阿呋唑嗪预防组大鼠经门静脉给予阿呋唑嗪(0.9μg/g)预处理1 min后测压,再予去氧肾上腺素(1.5μg/g),在1、5和10 min后测压。采用单因素方差分析、Dunnett-t检验进行统计学分析。结果对照组、门静脉高压模型组、阿呋唑嗪治疗组和阿呋唑嗪预防组分别有4、6、8、5只大鼠门静脉穿刺成功。门静脉高压模型组大鼠给药5和10 min后门静脉压力分别为(18.045±7.636)、(15.515±5.440)mmHg(1 mmHg=0.133 kPa),均高于给药前[(8.452±2.830)mmHg],差异均有统计学意义(t=2.89、2.82,均P0.05)。结论α1AR是参与门静脉压力调节的重要因素,其阻滞剂能降低和拮抗α1AR激活导致的门静脉高压,对防治肝硬化门静脉高压进展具有重要意义。

关键词： α1肾上腺素受体门静脉高压肝硬化肝纤维化