检索结果-南通市图书馆

Journal of Earth Science 2023年第2期34卷 297-303页

作者： Wenkai Chen Gang Rao dengjie kang Zhifan Wan Dun Wang Lanzhou Institute of Seismology China Earthquake AdministrationLanzhou730000China School of Geoscience and Technology Southwest Petroleum UniversityChengdu610500China State Key Laboratory of Geological Processes and Mineral Resources School of Earth SciencesChina University of GeosciencesWuhan430074China

INTRODUCTION,At 01:17 UTC(04:17 on local time)on Feb.6,2023,a devastating earthquake with a moment magnitude(Mw)7.8 occurred in the Gaziantep,southern Turkey.The earthquake was located at 37.174°N and 37.032°E,with ... 详细信息

关键词： earthquake magnitude Earthquake

Rapid assessment of the September 5,2022 M_(S)6.8 Luding earthquake in Sichuan,China

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Earthquake Research Advances 2023年第2期3卷 1-7页

作者： dengjie kang Wenkai Chen Huaiqun Zhao Dun Wang Lanzhou Institute of Seismology Lanzhou730000GansuChina China University of Geosciences(Wuhan) Wuhan430000HubeiChina

At 12:52,September 5,2022,an M_(S)6.8 earthquake occurred in Luding,Sichuan.The earthquake caused serious casualties and property loss,and was determined to have an epicenter intensity of Ⅸ degree.In this study,we used three earthquake intensity rapid assessment methods(i.e.WFM,BPM and ASM) to evaluate the intensity of this earthquake.Then,we comparatively analyzed the three methods based on strong ground motion observation data and actual intensity maps.The results show that:(1) The earthquake is associated with a southeast-oriented single-sided rupture.The WFM method can only evaluate earthquakes with two-sided ruptures,which has some limitations;(2) The intensity of BPM and ASM was overestimated on the southwest and north sides of the epicenter,but other high-intensity zones were similar to the intensities measured by actual surveys;(3) The residuals of the three intensity assessment methods were all between-0.5 and 1.Although a small number of stations were underestimated,the overall residuals were good,and the residuals gradually approached 0 with the increase of distance;(4) The number of towns and villages evaluated by the three methods in the earthquake area was almost all lower than the field survey results.One exception is the area of Ⅷ degree,where the BPM and ASM were higher than the survey results;(5) The area of the earthquake area evaluated by the three methods was low in Ⅵ and Ⅶ degree,moderate in Ⅷ degree,and low in Ⅸ degree(the area from ASM is similar to the area measured by actual survey).Overall,ASM is applicable to this earthquake intensity assessment.

关键词： Luding earthquake Seismic intensity Rapid assessment Ground-Motion prediction equation Back-projection Aftershock

Physiological,transcriptome and gene functional analysis provide novel sights into cadmium accumulation and tolerance mechanisms in kenaf

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Journal of Environmental Sciences 2024年第3期137卷 500-514页

作者： Shan Cao Meng Wang Jiao Pan dengjie Luo Samavia Mubeen Caijin Wang Jiao Yue Xia Wu Qijing Wu Hui Zhang Canni Chen Muzammal Rehman Sichen Xie Ru Li Peng Chen Guangxi Key Laboratory of Agro-environment and Agric-products safety Key Laboratory of Plant Genetics and BreedingCollege of AgricultureGuangxi UniversityNanning 530004China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources College of Life Science and TechnologyGuangxi UniversityNanning 530004China

Kenaf is considered to have great potential for remediation of heavy metals in ecosystems.However,studies on molecular mechanisms of root Cd accumulation and tolerance are still inadequate.In this study,two differently tolerant kenaf cultivars were selected as materials and the physiological and transcriptomic effects were evaluated under Cd stress.This study showed that 200μmol/L CdCl_(2) treatment triggered the reactive oxygen species(ROS)explosion and membrane lipid peroxidation.Compared with the Cd-sensitive cultivar‘Z',the Cd-tolerant cultivar‘F'was able to resist oxidative stress in cells by producing higher antioxidant enzyme activities and increasing the contents of ascorbic acid(AsA)and glutathione(GSH).The root cell wall of‘F'exhibited higher polysaccharide contents under Cd treatment,providing more Cd-binding sites.There were 3,439 differentially expressed genes(DEGs)that were co-regulated by Cd treatment in two cultivars.Phenylpropanoid biosynthesis and plant hormone signal transduction pathways were significantly enriched by functional annotation analysis.DEGs associated with pectin,cellulose,and hemi-cellulose metabolism were involved in Cd chelation of root cell wall;V-ATPases,ABCC3 and Narmp3 could participated in vacuolar compartmentalization of Cd;PDR1 was responsible for Cd effux;the organic acid transporters contributed to the absorption of Cd in soil.These genes might have played key roles in kenaf Cd tolerance and Cd accumulation.Moreover,HcZIP2 was identified to be involved in Cd uptake and transport in kenaf.Our findings provide a deeper understanding of the molecular pathways underlying Cd accumulation and detoxification mechanisms in kenaf.

关键词： Kenaf Cd stress Physiological Transcriptome HcZIP2

基本权利作为价值——对客观价值秩序说的澄清与辩护

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法学家 2024年第3期 30-45,191页

作者：杨登杰北京航空航天大学法学院

基本权利作为价值之说的核心,不是如何建构与防御权不同的基本权利扩展面向的宪法教义学问题,而是作为教义学基础的宪法理论问题,涉及宪法解释方法、权利观、宪法观三个维度。该说主张非实证主义的解释方法,是基本权利防御面向与扩展面... 详细信息

基本权利作为价值之说的核心,不是如何建构与防御权不同的基本权利扩展面向的宪法教义学问题,而是作为教义学基础的宪法理论问题,涉及宪法解释方法、权利观、宪法观三个维度。该说主张非实证主义的解释方法,是基本权利防御面向与扩展面向的共同根基。它摒弃经典自由主义权利观,秉持全面的、中道的权利观,以全面的、实际的、群己平衡的自由作为基本权利的价值内涵。它将宪法视为兼具国家宪法与社会宪法维度的共同体根本法,以回应现代社会的复杂性与自由平等保障需求的多样性。它将宪法视为整个法律秩序——包括法律解释适用——的最高原则。价值辐射的全面性不可被误解为全能,价值秩序宪法仍然可以是留给立法、行政、司法充分填充空间的框架秩序。

关键词：基本权利客观价值宪法解释方法宪法精神根本法

登州文会馆音乐声学教育及其教科书《声学揭要》研究

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中国音乐学 2024年第2期 85-91,110页

作者：郭登杰上海音乐学院

登州文会馆的音乐教育具有鲜明的办学特色,尤为注重将音乐与科学合二为一地体现在教学及其教学法之中,不仅开设了唱歌、乐理课程,还开设了音乐声学等科学课程,并编译出版了最早引入西方现代音乐声学理论的教科书《声学揭要》,展现出近... 详细信息

登州文会馆的音乐教育具有鲜明的办学特色,尤为注重将音乐与科学合二为一地体现在教学及其教学法之中,不仅开设了唱歌、乐理课程,还开设了音乐声学等科学课程,并编译出版了最早引入西方现代音乐声学理论的教科书《声学揭要》,展现出近代中国音乐声学教育启蒙时期的探索。本文首先对登州文会馆音乐声学教育的发展历程进行梳理,以便把握其演进的脉络与特点,其次对《声学揭要》的生产制作和内容特征进行考证、分析,补正以往研究中的不足或失实之误,进而探究这部教科书的译介策略,为理解全球音乐教育史上的关键维度和事件提供一种观察路径。

关键词：登州文会馆音乐声学教育《声学揭要》

Preliminary report of the September 5,2022 M_(S) 6.8 Luding earthquake,Sichuan,China

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Earthquake Research Advances 2023年第1期3卷 1-10页

作者： Yanru An Dun Wang Qiang Ma Yueren Xu Yu Li Yingying Zhang Zhumei Liu Chunmei Huang Jinrong Su Jilong Li Mingxiao Li Wenkai Chen Zhifan Wan dengjie kang Baoshan Wang China Earthquake Networks Center Beijing 100045China Badong National Observation and Research Station of Geohazards School of Earth SciencesChina University of Geosciences(Wuhan)Wuhan 430074China Key Laboratory of Earthquake Engineering and Engineering Vibration Institute of Engineering MechanicsChina Earthquake AdministrationHarbin 150080China Institute of Earthquake Forecasting China Earthquake AdministrationBeijing 100036China Hubei Key Laboratory of Earthquake Early Warning Hubei Earthquake AgencyWuhan 430064China Sichuan Earthquake Agency Chengdu 610044China Lanzhou Institute of Seismology China Earthquake AdministrationLanzhou 730030China School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China

The 2022 M_(S)6.8 Luding earthquake is the strongest earthquake in Sichuan Province, Western China, since the 2017 M_(S)7.0 Jiuzhaigou earthquake. It occurred on the Moxi fault in the southeastern segment of the Xianshuihe fault, a tectonically active and mountainous region with severe secondary earthquake disasters. To better understand the seismogenic mechanism and provide scientific support for future hazard mitigation, we summarize the preliminary results of the Luding earthquake, including seismotectonic background, seismicity and mainshock source characteristics and aftershock properties, and direct and secondary damage associated with the mainshock.The peak ground displacements in the NS and EW directions observed by the nearest GNSS station SCCM are ~35 mm and ~55 mm, respectively, resulting in the maximum coseismic dislocation of 20 mm along the NWW direction, which is consistent with the sinistral slip on the Xianshuihe fault. Back-projection of teleseismic P waves suggest that the mainshock rupture propagated toward south-southeast. The seismic intensity of the mainshock estimated from the back-projection results indicates a Mercalli scale of Ⅷ or above near the ruptured area,consistent with the results from instrumental measurements and field surveys. Numerous aftershocks were reported, with the largest being M_(S)4.5. Aftershock locations(up to September 18, 2022) exhibit 3 clusters spanning an area of 100 km long and 30 km wide. The magnitude and rate of aftershocks decreased as expected, and the depths became shallower with time. The mainshock and two aftershocks show left-lateral strike-slip focal mechanisms. For the aftershock sequence, the b-value from the Gutenberg-Richter frequency-magnitude relationship, h-value, and p-value for Omori’s law for aftershock decay are 0.81, 1.4, and 1.21, respectively, indicating that this is a typical mainshock-aftershock sequence. The low b-value implies high background stress in the hypocenter region. Analysis from remote sensing satellite images and UAV data

关键词： Luding earthquake Moxi fault Aftershock statistics Earthquake disasters Intensity map

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基于YOLOv3的X光图像违禁品目标检测

工业控制计算机 2024年第6期37卷 50-51页

作者：杨登杰赵昕谢悦中国联合网络通信有限公司政企客户事业群解决方案部北京100033

基于人类视觉的X光图像违禁品检测往往受限于工作强度和复杂人流环境,给安检工作带来巨大挑战。使用人工智能方法对违禁品进行自动检测与判别,对辅助安检工作具有重要的现实意义。提出基于YOLOv3的X光图像违禁品目标检测模型,在传统YOL... 详细信息

基于人类视觉的X光图像违禁品检测往往受限于工作强度和复杂人流环境,给安检工作带来巨大挑战。使用人工智能方法对违禁品进行自动检测与判别,对辅助安检工作具有重要的现实意义。提出基于YOLOv3的X光图像违禁品目标检测模型,在传统YOLOv3的基础上增加了一个检测尺度,实现实时的X光图像违禁品的自动判别,即不仅能够辨别出违禁品的种类,还能对违禁品在图像中所处的位置进行标定。实验结果表明,改进后的YOLOv3在Precision、Recall、mAP和F1四个模型评价指标上均取得提高,其中mAP值达到96.2%,对于安检X光图像违禁品目标具有良好的检测效果。

关键词： YOLOv3 X光图像目标检测

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输电线路压缩型耐张线夹工程失效研究进展

南方电网技术 2024年第4期18卷 152-161页

作者：安利强罗益鑫李渊朱登杰黄增浩华北电力大学机械工程系河北保定071003 南方电网科学研究院广州510663

输电线路中耐张线夹需求量巨大,但线夹失效事故发生频繁,这不仅带来了经济损失,还严重威胁到电网的可靠运行。为解释压缩型耐张线夹的失效机理,提高输电线路的安全性,国内外学者展开了大量的研究。从失效事故方面综述了压缩型耐张线夹... 详细信息

输电线路中耐张线夹需求量巨大,但线夹失效事故发生频繁,这不仅带来了经济损失,还严重威胁到电网的可靠运行。为解释压缩型耐张线夹的失效机理,提高输电线路的安全性,国内外学者展开了大量的研究。从失效事故方面综述了压缩型耐张线夹的过热和断裂两类工程失效类型,从工程分析和机理研究方面综述了两类工程失效类型的失效机理,从压接工艺研究方面综述了压接工艺参数对失效形式的影响,并从常规检测以及无损检测两个角度综述耐张线夹的质量检测研究现状。最后,基于目前偏于定性分析的耐张线夹工程失效研究,对耐张线夹失效机理的进一步研究提出了展望。

关键词：耐张线夹失效机理压接工艺参数无损检测

Integration of LNG Regasification Process in Natural Gas-Fired Power System with Oxy-Fuel Combustion

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Journal of Thermal Science 2022年第5期31卷 1351-1366页

作者： LIU Rong XIONG Yongqiang KE Liying LIANG Jiacheng CHEN dengjie ZHAO Zhongxing LI Yajun College of Chemistry and Materials Science Ji’nan UniversityGuangzhou510632China Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology Guangxi UniversityNanning530004China Key Lab of Heat Transfer Enhancement and Energy Conservation of the Ministry of Education South China University of TechnologyGuangzhou510640China

Oxy-fuel combustion power systems can utilize the cold energy released during the liquefied natural gas(LNG)regasification to reduce the power consumption of CO_(2) capture,but the specific LNG cold energy consumption of CO_(2) capture is still too large.To recover more CO_(2) with the limited LNG cold energy at a low energy cost,a novel natural gas-fired oxy-fuel power system with the cascade utilization of LNG cold energy is proposed in this work,where the LNG cold energy could be sequentially utilized in the air separation unit and the CO_(2) recovery process.The new system is evaluated with the Aspen Plus software.The results show that the net electrical efficiency and the specific primary energy consumption for CO_(2) avoided(SPECCA)of the new system are comparable to those of the chemical looping combustion cycle,and superior to those of the conventional O_(2)/CO_(2) cycles.Moreover,the specific LNG needed for CO_(2) avoided(SLNCC)of the new system is more than 67.2%lower than the existing oxy-fuel power systems utilizing the LNG cold energy.Furthermore,it is found that the O_(2) purity of 97.0 mol.%and the CO_(2) capture ratio of 97.0%are optimal conditions,because the SPECCA,the specific exergy consumption for CO_(2) avoided(SECCA)and the SLNCC are at the minimum of 1.87 GJLHV⋅t_(CO_(2))^(−1),2.60GJ⋅t_(CO_(2))^(−1) and 1.88tLNG⋅t_(CO_(2))^(−1),respectively.Meanwhile,the net electrical efficiency and the exergy efficiency of the new system reach 51.51%and 49.23%,respectively.

关键词： oxy-fuel combustion CO_(2)capture LNG cold energy efficiency

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定向能武器在电磁空间的运用

国防科技 2024年第2期45卷 69-75页

作者：吴涛涛夏良斌曹登杰西北核技术研究所陕西西安710024

为探讨以激光武器和高功率微波武器为代表的定向能武器在电磁空间中的作战应用,采用演绎和类比的研究方法,从电磁频谱的物理原理和战争基本规律出发,论述电磁空间的基本性质、电磁火力的基本特点、电磁精确战的基本原理,以及定向能武器... 详细信息

为探讨以激光武器和高功率微波武器为代表的定向能武器在电磁空间中的作战应用,采用演绎和类比的研究方法,从电磁频谱的物理原理和战争基本规律出发,论述电磁空间的基本性质、电磁火力的基本特点、电磁精确战的基本原理,以及定向能武器的基本定位、优势劣势、软硬杀伤。分析定向能武器在电磁空间的信息破坏力与信息创造力,梳理总结定向能武器的主要作战场景及运用方式,最后就加快定向能武器走向实战提出建议。

关键词：定向能武器电磁空间高能激光高功率微波