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枕头坝一级水电站河道清淤工程概述

水利水电技术 2020年第S1期51卷 162-166页

作者：崔鹏飞国电大渡河流域水电开发有限公司枕沙水电建设管理分公司四川金口河614700

枕头坝一级水电站尾水河道1.1 km范围,淤积严重,抬高了下游尾水位,大大影响了电站发电效益。通过采用抓斗式和铲斗式相互配合的清淤方式在枕头坝一级水电站下游河段开展两个枯水期的疏浚施工和试验研究,以期达到降低下游水位的目标,并... 详细信息

枕头坝一级水电站尾水河道1.1 km范围,淤积严重,抬高了下游尾水位,大大影响了电站发电效益。通过采用抓斗式和铲斗式相互配合的清淤方式在枕头坝一级水电站下游河段开展两个枯水期的疏浚施工和试验研究,以期达到降低下游水位的目标,并探索枕头坝二级水电站采用下游河道清淤充分利用下游3 m水头以增大装机容量的可行性。本次清淤有效降低了下游河道水位,提高了发电效益,为大渡河流域同类电站通过下游河道疏浚提高水能利用效率提供了技术支持。

关键词：枕头坝一级水电站河道清淤抓斗式

A SAR sidelobe suppression algorithm based on modified spatially variant apodization

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Science China(Technological Sciences) 2010年第9期53卷 2542-2551页

作者： NI Chong1,2,WANG YanFei1,XU XiangHui1,ZHOU ChangYi1 & cui pengfei1,2 1 Institute of Electronics,Chinese Academy of Sciences,Beijing 100190,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100039,China Institute of Electronics Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences

The existing spatially variant apodizations (SVAs) either cannot depress the sidelobes effectively or reduce the energy of the *** improve this,a modified SVA (MSVA) is put forward in this paper,which expands the traditional filter from 3-taps to 5-taps and sets relevant parameters according to different sampling rates to get the excellent result that satisfies constrained optimization theory.A method for synthetic aperture radar (SAR) sidelobe control based on MSVA is presented,which applies MSVA to range compression and azimuth compression to control *** method which is available for any Nyquist sampling rate can both depress the sidelobes effectively and keep the energy of the mainlobe and the resolution of the *** method can reduce sidelobe levels more effectively than classical amplitude weighting while maintaining the image resolution,as demonstrated by the result of the experiment.

关键词： synthetic aperture radar sidelobe suppression resolution SVA

太阳能与燃煤机组混合发电系统的热经济性分析

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太阳能学报 2015年第3期36卷 624-629页

作者：唐强曹伟伟张力崔鹏飞重庆大学低品位能源利用技术及系统教育部重点实验室重庆400030

以某型300 MW机组为例,利用抛物面槽式集热器收集太阳能热量,提出7种太阳能与燃煤机组集成方案,并定义太阳能加热给水与燃煤机组混合发电系统的循环效率、太阳能热电转换率等评价指标,应用变热量等效焓降法计算理论,对原机组及不同集成... 详细信息

以某型300 MW机组为例,利用抛物面槽式集热器收集太阳能热量,提出7种太阳能与燃煤机组集成方案,并定义太阳能加热给水与燃煤机组混合发电系统的循环效率、太阳能热电转换率等评价指标,应用变热量等效焓降法计算理论,对原机组及不同集成方案进行热经济性能分析。结果表明:太阳能与回热系统混合发电,既能增加发电量,提高太阳能热电效率,又能降低纯太阳能发电投资成本,其代价是混合发电系统的热效率将下降;给出的所有集成方案中,取代1段抽汽方案产生的额外电能和太阳能热电转换率最大,标煤耗率和热耗率最小,为最佳混合方案。

关键词：太阳能燃煤机组混合发电等效焓降法热经济性

A comparative study of the anti-fatigue activity of extracts from different parts of Cistanche tubulosa(Schenk)Wight Author links open overlay panel

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Journal of Traditional Chinese Medical Sciences 2024年第2期11卷 222-231页

作者： Jianteng Dong Junjun Li Yizhou Liu Lingwen cui Xiangning Liu Gang Wang Qixin Wang David N.Criddle pengfei Tu Chun Li School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing102488China Modern Research Center for Traditional Chinese Medicine School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing102488China Institute of Chinese Materia Medica China Academy of Chinese Medical SciencesBeijing100700China Department of Molecular&Clinical Cancer Medicine Institute of SystemsMolecular&Integrative BiologyUniversity of LiverpoolLiverpoolL693BXUK Peking University School of Pharmaceutical Sciences Beijing100191China

Objective To evaluate the anti-fatigue effects of different extracts from Cistanche tubulosa(Schenk)Wight(***,Rou Cong Rong),focusing on central and exercise-induced fatigue in *** study investigated the pharmacological effects of the total oligosaccharides,polysaccharides,and phenylethanoid glycosides(CPhGs)extracted from *** Models of sleep deprivation and forced swimming fatigue were established to simulate central and exercise-induced *** mice were treated with different extracts of ***,and their effects were assessed using behavioral tests to measure exercise capacity,learning,and memory *** analyses were performed to evaluate the changes in serum and brain neurotransmitter levels,liver and muscle glycogen storage,and various fatigue-related *** This study found that treatment with *** extract improved exercise capacity,learning,and memory in *** oligosaccharides from *** enhanced adrenocorticotropic hormone,cholinesterase,and thyroid-stimulating hormone levels,reduced cortisol levels in central fatigue models,and ameliorated biochemical markers of exercise-induced fatigue,including lowering lactic acid,blood urea nitrogen,and malondialdehyde *** the tested extracts,the total oligosaccharides showed the most comprehensive anti-fatigue *** The anti-fatigue effects of ***,particularly those of its total oligosaccharides,are pronounced in both central and exercise-induced *** effects are mediated by the regulation of neurotransmitter levels,enhancement of glycogen storage,and improvement of antioxidant enzyme activity,suggesting potential therapeutic benefits in fatigue-related conditions.

关键词： Cistanche tubulosa Anti-fatigue Central fatigue Exercise fatigue Oligosaccharides

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略论汽车维修生产信息化问题

汽车技术 2005年第3期 39-42页

作者：韩相春崔鹏飞东北林业大学吉林大学

在简要介绍信息的作用与价值的基础上,分析了信息对维修生产过程的影响,提出了″维修活动主要是对有故障的产品输入相关信息使之恢复原有使用功能的过程″和″维修的价值主要体现在对有故障的产品输入相关信息所产生的增值″的观点。通... 详细信息

在简要介绍信息的作用与价值的基础上,分析了信息对维修生产过程的影响,提出了″维修活动主要是对有故障的产品输入相关信息使之恢复原有使用功能的过程″和″维修的价值主要体现在对有故障的产品输入相关信息所产生的增值″的观点。通过对国内外汽车维修信息化现状与发展趋势的分析,指出实现汽车维修信息化的技术前提是维修信息的网络化和集成化。

关键词：汽车维修信息化网络化

High precision current mirror circuit based on two-dimensional material transistors

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Science China(Information Sciences) 2024年第8期67卷 353-354页

作者： Shiping GAO Chen PAN Pincheng SU Xing-Jian YANGDONG Wentao YU Zhoujie ZENG Yu SHEN Jingwen SHI Yanwei cui pengfei WANG Yuekun YANG Cong WANG Bing CHENG Shi-Jun LIANG Feng MIAO Institute of Interdisciplinary Physical Sciences School of Physics Nanjing University of Science and Technology Institute of Brain-Inspired Intelligence National Laboratory of Solid State Microstructures School of PhysicsCollaborative Innovation Center of Advanced Microstructures

The emerging two-dimensional field-effect transistor(2DFET) is considered an important candidate device for driving future integrated circuit technology toward higher performance, lower power consumption, and more functionalities [1,2]. Among the integrated circuits, analog circuits play a crucial role as they are responsible for sampling, amplifying, and transmitting signals.

关键词： Timing circuits

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Genetic and biological characteristics of the globally circulating H5N8 avian influenza viruses and the protective efficacy offered by the poultry vaccine currently used in China

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Science China(Life Sciences) 2022年第4期65卷 795-808页

作者： pengfei cui Xianying Zeng Xuyong Li Yanbing Li Jianzhong Shi Conghui Zhao Zhiyuan Qu Yanwen Wang Jing Guo Wenli Gu Qi Ma Yuancheng Zhang Weipeng Lin Minghui Li Jingman Tian Dongxue Wang Xin Xing Yanjing Liu Shuxin Pan Yaping Zhang Hongmei Bao Liling Liu Guobin Tian Chengjun Li Guohua Deng Hualan Chen State Key Laboratory of Veterinary Biotechnology Harbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin150069China College of Agronomy Liaocheng UniversityLiaocheng252000China Guangdong Laboratory for Lingnan Modern Agriculture Guangzhou510642China

The H5N8 avian influenza viruses have been widely circulating in wild birds and are responsible for the loss of over 33 million domestic poultry in Europe, Russia, Middle East, and Asia since January 2020. To monitor the invasion and spread of the H5N8 virus in China, we performed active surveillance by analyzing 317 wild bird samples and swab samples collected from 41,172 poultry all over the country. We isolated 22 H5N8 viruses from wild birds and 14 H5N8 viruses from waterfowls. Genetic analysis indicated that the 36 viruses formed two different genotypes: one genotype viruses were widely detected from different wild birds and domestic waterfowls;the other genotype was isolated from a whopper swan. We further revealed the origin and spatiotemporal spread of these two distinct H5N8 virus genotypes in 2020 and 2021. Animal studies indicated that the H5N8 isolates are highly pathogenic to chickens, mildly pathogenic in ducks, but have distinct pathotypes in mice. Moreover, we found that vaccinated poultry in China could be completely protected against H5N8 virus challenge. Given that the H5N8 viruses are likely to continue to spread in wild birds, vaccination of poultry is highly recommended in high-risk countries to prevent H5N8 avian influenza.

关键词： avian influenza virus H5N8 evolution pathogenicity antigenicity vaccine protective efficacy

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细胞自噬与应激反应

中国海洋大学学报（自然科学版） 2022年第7期52卷 1-13页

作者：汝少国朱增光崔鹏飞中国海洋大学海洋生命学院山东青岛266100

自噬是一种受到严格调控的重要的细胞过程,可通过溶酶体降解和回收受损的细胞器及细胞质成分,能起到保护细胞和维持细胞内部稳态的作用。自噬能够被细胞内多种应激压力激活,防止细胞受损成分的积累,减少细胞损伤。细胞自噬受到特异和非... 详细信息

自噬是一种受到严格调控的重要的细胞过程,可通过溶酶体降解和回收受损的细胞器及细胞质成分,能起到保护细胞和维持细胞内部稳态的作用。自噬能够被细胞内多种应激压力激活,防止细胞受损成分的积累,减少细胞损伤。细胞自噬受到特异和非特异多条信号通路调控,且自噬能够通过多种信号分子与其他应激反应相互关联,在综合应激反应中发挥重要作用。本文描述了常见的自噬调控分子机制及目前鉴定自噬的主要方法,介绍当前自噬和不同类型应激反应之间相互作用的研究进展,并展望了自噬研究的未来方向。

关键词：自噬应激反应氧化应激免疫信号通路细胞凋亡

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基于OBDⅡ系统监测信息的故障分析方法

汽车技术 2005年第10期 42-46页

作者：崔鹏飞储江伟吉林大学

第二代车载诊断系统——OBDⅡ系统是根据有关系列化标准、以诊断标准化为目的而开发的车载诊断系统。在概要介绍OBDⅡ系统功能、特点和监测机制的基础上,系统地论述了应用故障码和检测数据进行故障诊断的原理、条件与步骤。

关键词： OBDⅡ 检测数据故障诊断