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分体式太阳能PVT热泵系统试验运行性能分析

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动力工程学报 2024年第10期44卷 1574-1581页

作者：陆王琳李政姜山上海发电设备成套设计研究院有限责任公司上海200240 上海交通大学机械与动力工程学院太阳能发电与制冷教育部工程研究中心上海200240

在既有光伏组件的基础上,安装集热背板形成分体式PVT组件,搭建分体式PVT热泵系统试验台,在晴天和多云典型日2.工况下进行系统运行性能试验,将水箱内的水从常温加热到60℃。试验结果表明,在晴天和多云典型日下,系统平均COP分别为4.11和4... 详细信息

在既有光伏组件的基础上,安装集热背板形成分体式PVT组件,搭建分体式PVT热泵系统试验台,在晴天和多云典型日2.工况下进行系统运行性能试验,将水箱内的水从常温加热到60℃。试验结果表明,在晴天和多云典型日下,系统平均COP分别为4.11和4.2.,均高于相同工况下的空气源热泵;最大发电效率分别为13.2.和19.9%,PVT组件表面温度分布均低于40℃,有明显的降温提效作用;平均得热因子分别为48%和71%,无量纲压力损失系数保持在0.030~0.047,均流性较好。

关键词：光伏光热热泵分体式既有光伏

多元特征驱动的超高层建筑变形状态智能学习与预测

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建筑结构学报 2024年第3期45卷 101-112页

作者：单伽锃张茜吕西林张其林同济大学土木工程学院上海200092 上海韧性城市与智能防灾工程技术研究中心上海200092

为实现基于监测数据的结构未来状态可预测,提出了一种多元特征驱动的超高层建筑变形状态智能学习与预测方法。通过信号自适应分解、响应多维特征分析与子信号相关性分析,实现结构响应数据重构与组合,并基于长短时记忆网络(LSTM)进行多... 详细信息

为实现基于监测数据的结构未来状态可预测,提出了一种多元特征驱动的超高层建筑变形状态智能学习与预测方法。通过信号自适应分解、响应多维特征分析与子信号相关性分析,实现结构响应数据重构与组合,并基于长短时记忆网络(LSTM)进行多通道学习与多步预测。利用上海中心大厦在台风“梅花”作用下的结构顶部水平位移响应实测数据,揭示位移响应数据具有超低频准静态变形与一阶模态控制振动响应的叠加特征以及时域非平稳特性。通过响应数据重构,形成三组具有不同时间尺度、振动幅值和平稳特性的子信号组合。通过3个独立LSTM模型,实现基于300个时间步数据预测未来1~60个时间步的位移响应。结果表明,在控制未来预测时间步长(60个时间步内)的条件下,所提出的数据驱动的学习预测模型能充分学习与预测已知的位移响应数据特征与物理状态,具备较高的预测精度,归一化误差可控制在10%以内,能实现对超高层建筑变形状态的准确实时预测。

关键词：超高层建筑结构健康监测变形状态 LSTM模型时序数据

Awake rabbit model of ischemic spinal cord injury with delayed paraplegia: The role of ambient temperature

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Animal Models and Experimental Medicine 2024年第05期 732-739页

作者： Wang Yang Qian-qian Wu lu Yang Yu-jie Chen Ren-qing Jiang Ling Zou Qing-shan Liu Guang-you Shi Jiang Cao Xiao-chao Yang Jian Sun School of Biomedical Engineering and Medical Imaging Army Medical University Army Health Service Training Base Army Medical University Department of Neurosurgery Southwest Hospital Army Medical University

Background: Paraplegia after spinal cord ischemia is a devastating condition in the clinic. Here, we develop an awake rabbit model of spinal cord ischemia with delayed paraplegia and explore the influence of ambient temperature on the outcomes after ***: A total of 47 male rabbits were involved in the present study. Transient spinal cord ischemia was induced by occluding the infrarenal abdominal aorta of awake rabbits at different ambient temperatures. To find the optimal conditions for developing delayed paraplegia, hindlimb motor function after ischemia was evaluated between ***: The onset and magnitude of ischemic injury varied with the ambient temperature maintained during the peri-i schemia period. More serious spinal cord injury occurred when ischemia was induced at higher temperatures. At 18°C, 2.-minute ischemia resulted in 74% of rabbits developing delayed paraplegia. At a temperature of 2.°C or higher, most of the animals developed acute paraplegia immediately. While at 13°C, rabbits usually regained normal motor function without ***: This awake rabbit model is highly reproducible and will be helpful in future studies of delayed paraplegia after spinal cord ischemia. The ambient temperature must be considered while using this model during investigation of therapeutic interventions.

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基于任意概率分布建模与改进混沌多项式展开的概率潮流方法

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电力系统自动化 2024年第18期48卷 167-176页

作者：李可萌王毅闪鑫陆娟娟南瑞集团有限公司(国网电力科学研究院有限公司) 江苏省南京市211106 国电南瑞科技股份有限公司江苏省南京市211106

针对目前概率潮流难以兼顾准确度和速度,且缺乏有效处理任意概率分布源荷数据的手段,提出了基于任意概率分布建模策略和改进混沌多项式展开的概率潮流方法。首先,将系统输入量拟合为概率分布类型库中的概率分布,基于赤池信息量准则选取... 详细信息

针对目前概率潮流难以兼顾准确度和速度,且缺乏有效处理任意概率分布源荷数据的手段,提出了基于任意概率分布建模策略和改进混沌多项式展开的概率潮流方法。首先,将系统输入量拟合为概率分布类型库中的概率分布,基于赤池信息量准则选取最优分布,比较最优分布和非参核密度估计的似然估计值确定最终概率分布。其次,为提升最小角回归广义混沌多项式展开的准确度,提出应用伪谱法和矩匹配法获取备选点集合,并使用组合概率窗对其筛选获得最优备选点。然后,对原始概率空间执行拉丁超立方采样获取补充配置点,并与最优备选点结合后得到最终配置点。所提方法在IEEE 30、IEEE 118节点算例中得到验证,在相近耗时下,所提方法的准确度较不确定量化计算框架UQLab推荐算法有显著提升。

关键词：概率潮流概率分布建模参数估计混沌多项式展开最小角回归不确定性量化

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红色文化记忆融入大学语文课程研究

Optimized online filter stack spectrometer for ultrashort X-ray pulses

吉林省教育学院学报 2024年第4期40卷 83-88页

作者：卢姗吉林警察学院中外语言系

红色文化资源是彰显革命历史的新平台，是塑造集体记忆、形成国家与民族认同的重要途径。无论是波澜壮阔的历史进程还是历史转折时期个体的情感与抉择，都是对后代进行精神教育的重要载体。作为公共基础课，大学语文课程在厚植文化根基... 详细信息

红色文化资源是彰显革命历史的新平台，是塑造集体记忆、形成国家与民族认同的重要途径。无论是波澜壮阔的历史进程还是历史转折时期个体的情感与抉择，都是对后代进行精神教育的重要载体。作为公共基础课，大学语文课程在厚植文化根基、培育人才的过程中更应该将红色文化育人的理念贯穿其中，这不仅是青年学生自我发展的关键，也关乎红色文化记忆的传承问题。

关键词：红色文化文化记忆大学语文

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Nuclear Science and Techniques 2024年第5期35卷 85-98页

作者： Jia-Xing Wen Ge Ma Ming-Hai Yu Yu-Chi Wu Yong-Hong Yan Shao-Yi Wang Huai-Zhong Gao lu-shan Wang Yu-Gang Zhou Qiang Li Yue Yang Fang Tan Xiao-Hui Zhang Jie Zhang Wen-Bo Mo Jing-Qin Su Wei-Min Zhou Yu-Qiu Gu Ming Zeng Zong-Qing Zhao Science and Technology on Plasma Physics Laboratory Laser Fusion Research CenterCAEPMianyang 621900China Department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Particle and Radiation Imaging(Tsinghua University) Ministry of EducationBeijing 100084China School of Information Engineering Southwest University of Science and TechnologyMianyang 621010China

Currently,with the advent of high-repetition-rate laser-plasma experiments,the demand for online diagnosis for the X-ray spectrum is increasing because the laser-plasma-generated X-ray spectrum is very important for characterizing electron dynamics and *** this study,scintillators and silicon PIN(P-type–intrinsic-N-type semiconductor)diodes were used to construct a wideband online filter stack *** X-ray sensor and filter arrangement was optimized using a genetic algorithm to minimize the condition number of the response ***,the unfolding error was significantly reduced based on numerical *** detector responses were quantitatively calibrated by irradiating the scintillator and PIN diode with various nuclides and comparing the measuredγ-ray peaks.A prototype 15-channel spectrometer was developed by integrating an X-ray detector with front-and back-end *** prototype spectrometer could record X-ray pulse signals at a repetition rate of 1 ***,an optimized spectrometer was employed to record the real-time spectra of laser-driven bremsstrahlung *** optimized spectrometer offers a compact solution for spectrum diagnostics of ultrashort X-ray pulses,exhibiting improved accuracy in terms of spectrum measurements and repetition rates,and could be widely used in next-generation high-repetition-rate high-power laser facilities.

关键词： Filter stack spectrometer Laser plasma diagnostics X-ray diagnostics Scintillator PIN diode

Gamma/Hadron Separation Method for the HADAR Experiment

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Research in Astronomy and Astrophysics 2024年第3期24卷 70-74页

作者： Yang-Zhao Ren Tian-lu Chen You-Liang Feng Dan-Zeng luo-Bu Yi-Qing Guo Cheng Liu Qi Gao Mao-Yuan Liu Xiang-Li Qian Ya-Ping Wang Zi-Hao Zhang Xin-Long Li Qing-Yuan Hou Heng-Jiao Liu Qing-Qian Zhou {2.-Jie Shu The Key Laboratory of Cosmic Rays(Tibet University) Ministry of EducationLhasa 850000China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of Sciences University of Chinese Academy of Sciences School of Intelligent Engineering Shandong Management University

Ground-based arrays of imaging atmospheric Cherenkov telescopes(IACTs)are the most sensitiveγ-ray detectors for energies of approximately 100 Ge V and *** such IACT is the High Altitude Detection of Astronomical Radiation(HADAR)experiment,which uses a large aperture refractive water lens system to capture atmospheric Cherenkov photons(i.e.,the imaging atmospheric Cherenkov technique).The telescope array has a low threshold energy and large field of view,and can continuously scan the area of the sky being observed,which is conducive to monitoring and promptly responding to transient *** process ofγ-hadron separation is essential in very-high-energy(>30 Ge V)γ-ray astronomy and is a key factor for the successful utilization of *** this study,Monte Carlo simulations were carried out to model the response of cosmic rays within the HADAR *** analyzing the Hillas parameters and the distance between the event core and the telescope,the distinction between air showers initiated byγ-rays and those initiated by cosmic rays was ***,a Quality Factor was introduced to assess the telescope’s ability to suppress the background and to provide a more effective characterization of its performance.

关键词： astroparticle physics-telescopes-methods data analysis

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空气污染对花粉症的影响及其机制研究进展

环境与职业医学 2024年第1期41卷 103-109页

作者：卢琪吴越张启航邓珊大连医科大学附属第二医院过敏(变态)反应科辽宁大连116023

花粉症是常见的过敏性疾病之一,其发病率呈增长趋势。研究发现,空气污染已成为导致花粉症患病率增加的重要环境因素,空气污染物和花粉过敏原存在相互协同作用,可加剧易感个体对花粉的过敏反应。本文基于空气污染和花粉症之间关系的最新... 详细信息

花粉症是常见的过敏性疾病之一,其发病率呈增长趋势。研究发现,空气污染已成为导致花粉症患病率增加的重要环境因素,空气污染物和花粉过敏原存在相互协同作用,可加剧易感个体对花粉的过敏反应。本文基于空气污染和花粉症之间关系的最新研究进展,阐述空气污染增加花粉症发病率及加重花粉症症状的可能机制;介绍了空气污染物可增加花粉产量和致敏蛋白含量,并通过改变花粉致敏蛋白的结构或化学修饰增强花粉过敏原的致敏性,促进过敏发生。归纳了空气污染物加重花粉过敏的可能机制:空气污染物可能通过破坏呼吸道黏膜上皮屏障功能,使花粉致敏蛋白更易进入深层组织,以及空气污染物促进花粉过敏相关细胞因子的释放,促进辅助型T细胞2.Th2.分化,加重气道炎症性反应。鉴于现有研究的局限性,提出今后需着重探究混合污染物和不同类型污染物对致敏花粉的影响,以及过敏相关细胞和细胞因子对不同种类污染物的响应机制,更全面揭示空气污染对花粉症的影响,为有效保护花粉症患者的健康提供科学依据。

关键词：空气污染花粉症过敏致敏蛋白致敏性机制

U-Pb dating of monazite in the Bainiuchang silver polymetallic deposit,Yunnan Province,and its limitation on Mesozoic mineralization

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China Geology 2024年第3期7卷 592-595页

作者： Bo-de lu Wen-chang Li Xue-long Liu Guang-zhi Meng Qi-he Long Hong Zhang Jun-shan Dao Fang-lan Li Jie-hu Zhou Mao-huang Fan Xue Mi Nan Shi Zhen-liang Cao College of Land Resources and Engineering Kunming University of Science and TechnologyKunming 650093China Geological Team 306 of Yunnan Non-ferrous Metals Geological Bureau Kunming 650217China Mengzi Mining and Metallurgy Co. Ltd.Mengzi 661199China

*** The Gejiu-Bozhushan-Laojunshan tin-tungsten polymetallic metallogenic belt is located in southeastern *** is bounded by the Mile-Shizong Fault and the Yangzi Plate to the north and west,respectively,while the Honghe Fault represents its southwestern *** is adjacent to the Ailaoshan Fault,and extends to Guangxi and Vietnam to the southeast(Fig.1a;Liu JP et al.,2.2.).

关键词： silver dating southeast