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计及新能源接入的地区电网人工智能无功优化

电网与清洁能源 2023年第1期39卷 133-142页

作者：王浩哲丁爱飞陆继翔张韬陈建华唐宁恺束蛟南瑞集团有限公司(国网电力科学研究院有限公司) 江苏南京211106 国电南瑞吉电新能源(南京)有限公司江苏南京211106 智能电网保护和运行控制国家重点实验室江苏南京211106

为了提升用户用电质量,降低系统网损,改善电压质量,针对传统AVC系统控制手段单一、控制灵敏度计算不完备、无功装置动作频繁、应对电压频繁波动存在控制盲区等问题,该文提出一种基于Attention-LSTM算法的在线无功优化模型。利用Attentio... 详细信息

为了提升用户用电质量,降低系统网损,改善电压质量,针对传统AVC系统控制手段单一、控制灵敏度计算不完备、无功装置动作频繁、应对电压频繁波动存在控制盲区等问题,该文提出一种基于Attention-LSTM算法的在线无功优化模型。利用Attention-LSTM算法挖掘电气特征与电压的非线性关系,再综合考虑降低电压偏差、减少动作次数及提高光伏无功利用率等因素,并根据地区电网电压偏差和波动的优化目标,建立了光伏、变压器、电容器高效协同配合的电压无功优化控制模型。最后以江苏某地区配电系统为实例,进行仿真及实验验证,结果表明了所提方法的有效性和实用性。

关键词：新能源无功优化电压控制人工智能 Attention-LSTM

Electrocatalytic biofilm reactor for effective and energyefficient azo dye degradation:the synergistic effect of MnO_(x)/Ti flow-through anode and biofilm on the cathode

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Frontiers of Environmental Science & Engineering 2023年第4期17卷 127-141页

作者： Yinghui Mo Liping Sun lu Zhang Jianxin Li jixiang Li Xiuru Chu Liang Wang State Key Laboratory of Separation Membranes and Membrane Processes National Center for International Joint Research on Membrane Science and TechnologyTiangong UniversityTianjin 300387China School of Environmental Science and Engineering Tiangong UniversityTianjin 300387China School of Materials Science and Engineering Tiangong UniversityTianjin 300387China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 200120China University of Chinese Academy of Sciences Beijing 100049China Tianjin Water Engineering Co. Ltd.Tianjin 300222China

Dyeing wastewater treatment remains a *** effective,the in-series process using electrochemical oxidation as the pre-or post-treatment of biodegradation is *** study proposes a compact dual-chamber electrocatalytic biofilm reactor(ECBR)to complete azo dye decolorization and mineralization in a single unit via anodic oxidation on a MnO_(x)/Ti flow-through anode followed by cathodic biodegradation on carbon *** with the electrocatalytic reactor with a stainlesssteel cathode(ECR-SS)and the biofilm reactor(BR),the ECBR increased the chemical oxygen demand(COD)removal efficiency by 24%and 31%(600 mg/L Acid Orange 7 as the feed,current of 6 mA),*** COD removal efficiency of the ECBR was even higher than the sum of those of ECR-SS and *** ECBR also reduced the energy consumption(3.07 kWh/kg COD)by approximately half compared with *** advantages of the ECBR in azo dye removal were attributed to the synergistic effect of the MnO_(x)/Ti flow-through anode and cathodic *** by MnIV=O generated on the MnO_(x)/Ti anode under a low applied current,azo dyes were oxidized and *** intermediate products with improved biodegradability were further mineralized by the cathodic aerobic heterotrophic bacteria(non-electrochemically active)under the stimulation of the applied *** advantage of the mutual interactions among the electricity,anode,and bacteria,this study provides a novel and compact process for the effective and energyefficient treatment of azo dye wastewater.

关键词： Azo dye removal Electrocatalytic biofilm reactor Anodic oxidation Electricity-stimulated biodegradation Energy consumption

Mapping Genome-wide Binding Sites of Prox1 in Mouse Cochlea Using the CUT&RUN Approach

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Neuroscience Bulletin 2021年第12期37卷 1703-1707页

作者： Zhengnan luo jixiang Zhang Lianyong Qiao Falong lu Zhiyong Liu Institute of Neuroscience State Key Laboratory of NeuroscienceCAS Center for Excellence in Brain Science and Intelligence TechnologyChinese Academy of SciencesShanghai 200031China University of Chinese Academy of Sciences Beijing 100049China Shanghai Center for Brain Science and Brain-Inspired Intelligence Technology Shanghai 201210China State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China

Dear Editor,Our auditory organ,the cochlea,resides in the ventral portion of the inner ear,and its sensory epithelium,the organ of Corti,contains hair cells(HCs)and supporting cells(SCs),which are both descendants of the same *** are prone to damage by multiple ototoxic factors,and how to regenerate damaged HCs using key genes involving cochlear development is of importance[1,2].Cochlear progenitor cells express Sox2 and prolif-erate before embryonic day 12.5(E12.5)in the mouse but become quiescent in an apical-to-basal gradient between E12.5 and E14.5[3].

关键词： auditory epithelium Mapping

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接触式多关节三维扫描仪研究

计算机工程与应用 2003年第22期39卷 12-15,19页

作者：胡寅李德华肖明智陆济湘徐银霞图像信息处理与智能控制教育部开放研究实验室华中科技大学图像识别与人工智能研究所第二炮兵指挥学院武汉430012

论述了拥有自主知识产权的接触式多关节三维扫描仪3DLCS-400的硬件系统和软件系统的基本构成、主要特点和实现方法。在此基础上,研究了接触式三维信息获取中的一些关键技术———数据采集与三维显示的同步、坐标计算和误差校正、三维构... 详细信息

论述了拥有自主知识产权的接触式多关节三维扫描仪3DLCS-400的硬件系统和软件系统的基本构成、主要特点和实现方法。在此基础上,研究了接触式三维信息获取中的一些关键技术———数据采集与三维显示的同步、坐标计算和误差校正、三维构型重建。采用基于API函数的异步多线程串行通信和OpenGL三维显示技术,提出了一种修正最小二乘法和基因可变限改进遗传算法相结合的参数标定方法和运用轮廓线的三维散乱数据构型方法。该产品的研制成功填补了国产三维信息获取系统的一个空白。

关键词：三维扫描仪接触式参数标定构型

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氦气纯化器性能测试方法的比较

低温与特气 2018年第4期36卷 9-11页

作者：马香莲师铜墙刘杨陈志军吕继祥黄卫张苏雯安徽万瑞冷电科技有限公司安徽合肥230088

氦气纯化器研制生产完成后需要进行性能测试,目前常用的方法有吸附总量离线测试方法和压缩机在线循环测试方法。结合实际使用情况对两种方法的优缺点进行了分析和比较。

关键词：氦气纯化器性能测试方法

Analysis and simulation of high strain compression of anisotropic open-cell elastic foams

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Science China(Technological Sciences) 2010年第3期53卷 863-869页

作者： lu ZiXing,HUANG jixiang&CHEN Xin School of Aeronautic Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China 1. School of Aeronautic Science and Engineering Beijing University of Aeronautics and Astronautics Beijing 100191 China

By elongating the regular Kelvin model in one direction and keeping unchanged in the other two directions,the anisotropic model was ***,the simplified periodic structural cell was obtained according to the periodicity and symmetry of the model in the whole *** the half-strut element and elastic deflection theory to analyze the mechanical behavior as were adopted in the previous studies,this paper obtained the theoretical expressions for the compressive stress and strain as well as the corresponding curves in the rise and transverse *** addition,the theoretical results were examined by the finite element *** indicated that the theoretical analysis was very close to the finite element simulation when the strain was not too high,which confirmed the validity of theoretical *** the same time,the anisotropy was shown to have a significant effect on the mechanical properties of open-cell *** the anisotropy ratio increased,the compressive stress was improved in the rise direction but dropped in the transverse direction under the same strain.

关键词： open-cell foams elastic deformation Kelvin model anisotropy finite element

Accurate expression of neck motion signal by piezoelectric sensor data analysis

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Chinese Chemical Letters 2024年第9期35卷 250-256页

作者： Neng Shi Haonan Jia jixiang Zhang Pengyu lu Chenglong Cai Yixin Zhang Liqiang Zhang Nongyue He Weiran Zhu Yan Cai Zhangqi Feng Ting Wang State Key Laboratory of Digital Medical Engineering National Demonstration Center for Experimental Biomedical Engineering EducationSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China SceneRay Co. Ltd.Suzhou 215123China School of Chemistry and Chemical Engineering Nanjing University of Science and TechnologyNanjing 210094China

The development of high-precision sensors using flexible piezoelectric materials has the advantages of high sensitivity,high stability,good durability,and *** main problem with sensing equipment is low sensitivity,which is due to the mismatch between materials and analysis methods,resulting in the inability to effectively eliminate *** address this issue,we developed the denoising analysis method to motion signals captured by a flexible piezoelectric sensor fabricated from poly(l-lactic acid)(PLLA)and polydimethylsiloxane(PDMS)*** results demonstrate that this improved denoising method effectively removes noise components from neck muscle motion signals,thus obtaining high-quality,low-noise motion signal *** decomposition and reconstruction is a signal processing technique that involves decomposing a signal into different scales and frequency components using wavelets and then selectively reconstructing the signal to emphasize specific features or eliminate *** study employed the sym8 wavelet basis for wavelet decomposition and *** the denoised signals,a high degree of stability and periodic peaks are distinctly manifested,while amplitude and frequency differences among different types of movements also become noticeably *** a result of this study,we are enabled to accurately analyze subtle variations in neck muscle motion signals,such as nodding,shaking the head,neck lateral flexion,and neck *** temporal and frequency domain analysis of denoised motion signals,differentiation among various motion states can be ***,this improved analytical approach holds broad application prospects across various types of piezoelectric sensors,such as healthcare monitoring,sports biomechanics.

关键词： Piezoelectric transducer Wavelet decomposition Muscle motion signal Signal analysis Noise component Healthcare monitoring

Single-cell RNA sequencing reveals Nestin+active neural stem cells outside the central canal after spinal cord injury

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Science China(Life Sciences) 2022年第2期65卷 295-308页

作者： Muya Shu Xiaoyu Xue Hu Nie Xianming Wu Minghan Sun Lianyong Qiao Xing Li Bai Xu Zhifeng Xiao Yannan Zhao Yongheng Fan Bing Chen jixiang Zhang Ya Shi Yaming Yang Falong lu Jianwu Dai State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100080China University of the Chinese Academy of Sciences Beijing 100101China Key Laboratory of Organ Injury Aging and Regenerative Medicine of Hunan ProvinceChangsha 410008China

Neural stem cells(NSCs)in the spinal cord hold great potential for repair after spinal cord injury(SCI).The ependyma in the central canal(CC)region has been considered as the NSCs source in the spinal ***,the ependyma function as NSCs after SCI is still under *** used Nestin as a marker to isolate potential NSCs and their immediate progeny,and characterized the cells before and after SCI by single-cell RNA-sequencing(scRNA-seq).We identified two subgroups of NSCs:the subgroup located within the CC cannot prime to active NSCs after SCI,while the subgroup located outside the CC were activated and exhibited the active NSCs properties after *** demonstrated the comprehensive dynamic transcriptome of NSCs from quiescent to active NSCs after *** study reveals that Nestin+cells outside CC were NSCs that activated upon SCI and may thus serve as endogenous NSCs for regenerative treatment of SCI in the future.

关键词： neural stem cell Nestin scRNA-seq Smart-seq2 ependymal cell

70年高师音乐教育专业本科课程设置的回顾、反思与展望

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湖南师范大学教育科学学报 2019年第3期18卷 42-48,56页

作者：卢斌玉辛继湘湖南师范大学音乐学院湖南长沙410081 湖南师范大学教育科学学院湖南长沙410081

中华人民共和国成立70年以来,我国高师音乐教育专业本科课程设置随着高师音乐教育的发展在不断进行变革,大致经历了初步建设、曲折发展、停滞衰退、恢复重建、改革创新五个阶段。分析每一阶段的不同发展特征,可以看出我国高师音乐教育... 详细信息

中华人民共和国成立70年以来,我国高师音乐教育专业本科课程设置随着高师音乐教育的发展在不断进行变革,大致经历了初步建设、曲折发展、停滞衰退、恢复重建、改革创新五个阶段。分析每一阶段的不同发展特征,可以看出我国高师音乐教育专业本科在课程设置上既取得了相当成效,也还存在许多问题,如教育属性彰显不够、部分课程属性归类模糊不清、通识课程设置不受重视等。鉴于此,我国高师音乐教育专业本科课程设置的未来发展需要彰显师范性特征、厘清课程属性归类、重视通识课程设置、进行多方调研促进课程设置的改进与完善。

关键词：音乐教育专业课程设置历史发展培养目标师范性