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我国区域科普能力测度及其与科技竞争力匹配度研究

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科普研究 2015年第5期10卷 31-37页

作者：陈套罗晓乐中国科学技术大学公共事务学院合肥230026 中科院合肥物质科学研究院合肥230031

依据科普能力的内涵和文献研究高频指标,构建了我国区域科普能力的评价指标体系,运用结构方程模型对评价体系进行了验证,通过因子分析法测算了区域科普能力和科技竞争力,比较了二者之间的匹配度,对科普能力进行了聚类分析。发现:科普能... 详细信息

依据科普能力的内涵和文献研究高频指标,构建了我国区域科普能力的评价指标体系,运用结构方程模型对评价体系进行了验证,通过因子分析法测算了区域科普能力和科技竞争力,比较了二者之间的匹配度,对科普能力进行了聚类分析。发现:科普能力的提升不能仅靠科普设施,更需要科普人员和经费的投入;科普发展水平不平衡,大多数区域科普能力较低,从东至西大致按强弱顺序排开;区域科普能力与科技竞争力匹配度不够高,二者在较高发展水平上匹配度好。建议:制定科普事业发展的中长期规划,促进区域间科普发展的平衡;加强科技资源向科普的转化,鼓励社会资源参与科普;科普能力强的区域,注重科普资源的开发开放、传播、扩散和辐射,科普能力弱的地区,加强科普宣传,注重吸收和利用发达地区科普资源和成果。

关键词：科普能力评价指标结构方程模型匹配度政策建议

Pivot Point Voltage Regulation Strategy in Rural Power Grid with Scaled PV Access

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Pivot Point Voltage Regulation Strategy in Rural Power Grid ...

Self-starting analysis of new energy system with wind power and energy storage

第37届中国控制会议

作者： Xiaotong Zhang Shenghui Li Xue Bai xiaole luo Ce Zhang Feng Zuo Power Science Research Institute of Liaoning electric power company Key Laboratory of Energy Saving & Controlling Power System of Liaoning Province Shenyang Institute of Engineering State Grid Huludao Electric Power Supply Company

Voltage exceeding becomes the key factor influencing the safe and stable operation of power grid with access to the distributed PV in large quantity. In order to adapt to the depth of penetration and to the access of large amount of distributed PV in order to elevate system’s ability of voltage regulation, in this paper, it puts forward a new method for the dynamic control of pivot point in rural power grid. First, based on PV output features and characteristics of loads in rural power grid, it analyzes the features of the scaled PV output and the typical status of loads in rural power grid. It adopts the calculation applicable to the power grid with the access to the large amount of PV and analyzes the overvoltage of Bus in the power distribution grid. Secondly, based on the overvoltage of Bus in the rural power grid, it puts forward a new reverse voltage regulation measure, namely, to invest graded reactors into the pivot point in the rural power grid to absorb the reactive power. Finally, it establishes the scaled PV operation simulation platform for one rural power grid in Liaoning Province through ETAP to have verified the validity of the aforesaid voltage regulation strategy.

关键词： Scaled PV rural power grid reverse voltage regulation measure

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Self-starting analysis of new energy system with wind power ...

第37届中国控制会议

作者： Aihua Wang Hong Gang Peng Qiu xiaole luo Xinfu Pang Ce Zhang Jinzhou Power Supply Company Liaoning Electric Power Company Key Laboratory of Energy Saving & Controlling Power System of Liaoning Province Shenyang Institute of Engineering

Power grid is developing towards the direction of intelligence. Nevertheless, the giant grid scale, complicated structure and external natural factors result in the potential of large-scaled power failure. Traditional black start power gives priority to hydropower. In areas with shortage of hydro power resources, suitable black start power is insufficient. The key of black start is able to realize the safe and stable operation of wind power and energy storage cogeneration system. Due to the combination of wind turbines and energy storage is a small system, energy storage, as a black start power source, starts the wind turbines together to supply power for the remote load. Therefore, it is necessary to run the balance and stable operation of a small system. In this paper, PSCAD simulation software is employed to conduct modeling of wind power and energy storage system,and the self-starting process of wind storage cogeneration system is analyzed by using resistance sensor as the load. The result verifies the wind power storage system’s initiation process.

关键词： Wind Power Energy Storage Self-starting process PSCAD Simulation balance operation

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针对精密车削微元进给的断屑方法研究

工具技术 2024年第5期58卷 89-93页

作者：骆波阳郝小乐潘林伟于连荣魏兆成大连德迈仕精密科技有限公司辽宁省大连市116052 大连理工大学机械工程学院辽宁省大连市116024

自动化设备车削加工过程中,切屑状态是影响其连续加工最重要的因素。当切屑连续不易断屑时,往往会缠绕在工件上,对其表面造成划伤且对下一道工序的装夹造成影响,导致废品率升高和效率降低。通过与啄钻工艺进行类比,提出了在车削过程中... 详细信息

自动化设备车削加工过程中,切屑状态是影响其连续加工最重要的因素。当切屑连续不易断屑时,往往会缠绕在工件上,对其表面造成划伤且对下一道工序的装夹造成影响,导致废品率升高和效率降低。通过与啄钻工艺进行类比,提出了在车削过程中等距加入反向进给使切屑折断的微元进给断屑方法。从断屑效果、刀具磨损、表面形貌三个方面评价了该工艺的优缺点。结果表明:采用新方法的断屑效果和表面质量均优于传统工艺,且采用切削油润滑时刀具寿命表现最佳。

关键词：微元进给断屑车削刀具磨损表面形貌

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检测胃蛋白酶原I的便携式荧光测试系统

激光与光电子学进展 2021年第5期58卷 251-257页

作者：徐明明沈威夏滑武艺薛辉陈素娟罗晓乐顾家鹏中国科学院安徽光学精密机械研究所光学工程中心安徽合肥230031

人体血清中的胃蛋白酶原I是临床医学中诊断胃食管反流的常用生物学指标,而传统的检测方法存在测试时间长、成本高、灵敏度低等缺点。设计了一种能够快速定量检测胃蛋白酶原I的荧光测试系统。首先使用便携式显微镜采集样品的荧光图像,再... 详细信息

人体血清中的胃蛋白酶原I是临床医学中诊断胃食管反流的常用生物学指标,而传统的检测方法存在测试时间长、成本高、灵敏度低等缺点。设计了一种能够快速定量检测胃蛋白酶原I的荧光测试系统。首先使用便携式显微镜采集样品的荧光图像,再利用RGB颜色通道中R通道图像处理算法对荧光图像进行检测和分析。最后根据实验数据,拟合出标准曲线,拟合度为99.556%,且检测结果的变异系数小于4.9%。结果表明,所设计的检测系统能够准确、快速地定量检测胃蛋白酶原I的浓度。

关键词：物理光学荧光显微镜成像 R通道图像处理图像分割定量检测

计及风电不确定性的综合能源系统储能优化配置研究

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东北电力技术 2021年第12期42卷 18-25,46页

作者：罗晓乐宋洋徐翔梁家车靖峰国网松原供电公司吉林松原138000

冬季供暖期为满足供热要求,热电联产机组采用“以热定电”的模式运行,在夜间负荷低谷期,风电出力很难与负荷需求相匹配,导致弃风现象严重。在热电联产(combined heat and power,CHP)机组中加入大容量储热环节,能够解耦以热定电,提升电... 详细信息

冬季供暖期为满足供热要求,热电联产机组采用“以热定电”的模式运行,在夜间负荷低谷期,风电出力很难与负荷需求相匹配,导致弃风现象严重。在热电联产(combined heat and power,CHP)机组中加入大容量储热环节,能够解耦以热定电,提升电网风电消纳能力,由于储能设备投资较高,为能够用经济有效的手段解决风电消纳问题,需要对电-热综合能源系统的储能进行优化配置。首先对风电出力的不确定性进行研究,综合比较确定选取风电出力典型日对风电出力进行描述,搭建电-热综合能源系统的基本网架结构,建立风电机组、CHP机组、电锅炉、热泵以及储热的数学模型;然后提出储能双层优化配置模型,上层以最小化储能综合投资成本为目标优化储能设备容量,下层以系统总运行成本最低为目标,实现系统运行经济性的优化,上层采用遗传算法进行求解,下层采用MATLAB中的fmincon函数求解非线性规划问题,在求解问题时采用序列二次规划算法(SQP);最后通过算例分析验证合理配置储能能够有效节约储能资源,减少成本,实现风电消纳和电网经济运行。

关键词：电热综合能源系统弃风消纳储能优化配置双层优化

Whirligig‑Inspired Hybrid Nanogenerator for Multi‑strategy Energy Harvesting

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Advanced Fiber Materials 2023年第1期5卷 362-376页

作者： Xiaozhen Dan Ran Cao xiaole Cao Yifei Wang Yao Xiong Jing Han Lan luo Jiahong Yang Nuo Xu Jia Sun Qijun Sun Zhong Lin Wang Center on Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004People’s Republic of China Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400People’s Republic of China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049People’s Republic of China School of Physics and Electronics Central South UniversityChangsha 410083People’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332‑0245USA

Portable energy solutions are highly desired in the era of the Internet of Things for powering various distributed micro-electronic *** the same time,the energy crisis and catastrophic global warming are becoming serious problems in the world,emphasizing the urgent need for clean and renewable ***,we report a low-cost,high-performance,and portable hand-driven whirligig structured triboelectric–electromagnetic hybrid nanogenerator(whirligig-HNG)for multi-strategy energy *** whirligig-HNG comprises a dynamic supercoiling TENG via the pulling-strings and inner-distributed EMGs(variable number)in the *** whirligig structure can readily convert linear displacement in low frequency into rotary motion in extremely high *** on this ingenious design,the whirligig-HNG is capable to harvest the triboelectric energy from the supercoiling/uncoiling process from the pulling strings and simultaneously utilize the high-frequency rotation energy via electromagnetic *** have systematically investigated the working mecha-nism of the whirligig-HNG for coupled energy harvesting and compared the individual characteristics of TENG and *** whirligig-HNG is successfully demonstrated to light up more than 100 commercial light-emitting diodes(LEDs)and drive portable *** research presents the enormous potential of whirligig-HNG as a manual and portable power supply for powering various portable electronics.

关键词： Whirligig-inspired Hybrid nanogenerator Triboelectric nanogenerator Electromagnetic nanogenerator Multi-strategy energy harvesting

Surface modulation of halide perovskite films for efficient and stable solar cells

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Chinese Physics B 2022年第3期31卷 24-35页

作者：戴沁煊骆超王显进高峰姜晓乐赵清 Key Laboratory of General Chemistry of the National Ethnic Affairs Commission School of Chemistry and EnvironmentSouthwest Minzu UniversityChengdu 610041China State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeiing 100871China Peking University Yangtze Delta Institute of Optoelectronics Nanong 226010China

As the main distribution place of deep-level defects and the entrance of water, the interface is critical to determining both the power conversion efficiency(PCE) and the stability of perovskite solar cells(PSCs). Suitable interface design can dramatically passivate interface defects and optimize energy level alignment for suppressing the nonradiative recombination and effectively extracting the photogenerated carriers towards higher PCE. Meanwhile, a proper interface design can also block the interface diffusion of ions for high operational stability. Therefore, interface modification is of great significance to make the PSCs more efficient and stable. Upon optimized material choices, the three-dimensional halide perovskite graded junction layer, low-dimensional halide perovskite interface layer and organic salt passivation layer have been constructed on perovskite films for superior PSCs, yet a systematic review of them is missing. Thus, a guide and summary of recent advances in modulating the perovskite films interface is necessary for the further development of more efficient interface modification.

关键词： perovskite solar cells interfacial engineering surface modulation organic salt surface layer

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通过减少空间异质性来改善接种生麦曲质量

食品与发酵工业 2023年第12期49卷 33-39页

作者：董国琛罗意吴梦尧廖辉黄鑫磊夏小乐工业生物技术教育部重点实验室(江南大学) 江苏无锡214122 江南大学生物工程学院江苏无锡214122

探究生麦曲发酵过程中的空间参数差异规律,解析同一批次曲房各层空间异质性对提高接种生麦曲的质量有重要意义。针对同批次生麦曲发酵过程中存在空间质量差异的关键问题,该研究以曲房内不同空间位置制作的接种生麦曲为研究对象,对不同... 详细信息

探究生麦曲发酵过程中的空间参数差异规律,解析同一批次曲房各层空间异质性对提高接种生麦曲的质量有重要意义。针对同批次生麦曲发酵过程中存在空间质量差异的关键问题,该研究以曲房内不同空间位置制作的接种生麦曲为研究对象,对不同空间位置曲块的理化生化指标进行测定,并应用多物理场仿真软件(COMSOL Multiphysics)将经验衍生的微生物生长动力学与传质传热现象相结合,解析理化性质与群落结构的关联性,探讨麦曲发酵过程中空间温度变化及其分布规律,最终利用该模拟结果优化后续接种生麦曲实验。结果显示,接种生麦曲的糖化酶活力、液化酶活力相比较优化前分别提高10.2%、54.1%;相比较于传统生麦曲糖化酶活力提高30.1%,液化酶活力提高106.8%,表明了通过减少空间异质性能够稳定和提高麦曲质量。该研究首次在接种生麦曲中将微生物生长动力学与空间因子相结合,解析了不同发酵阶段曲层温湿度分布的规律和差异性,为开发接种生麦曲新的空间控制模型以及其他传统固态发酵产品奠定理论基础。

关键词：空间异质性模拟工艺优化接种生麦曲固态发酵