检索结果-南通市图书馆

Acta Geologica Sinica(English Edition) 2024年第2期98卷 303-310页

作者： ZHANG Honggang YIN Yalei pei rui ZHOU Changfu College of Earth Science and Engineering Shandong University of Science and TechnologyQingdaoShandong 266570China College of Paleontology Shenyang Normal UniversityShenyang 110034China Key Laboratory of Evolution of Past Life in NE Asia Ministry of Natural ResourcesShenyang 110034China Key Laboratory of Evolutionary Systematics of Vertebrates Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China CAS Center for Excellence in Life and Paleoenvironment Beijing 100044China

Three eusauropod teeth(SDUST-V1064,PMOL-AD00176,PMOL-ADt0005)are reported from the Lower Cretaceous Yixian Formation of Ningcheng,southeastern Inner Mongolia,*** of them(SDUST-V1064,PMOL-AD00176)are assigned to early-diverging titanosauriforms in having slightly mesiodistal expansion at the base of the tooth crown,a slenderness index value>2.0 and<4.0,and D-shaped cross ***,SDUST-V1064 and PMOL-AD00176 are referred as an Euhelopus-like titanosauriform on the basis of having a sub-circular boss on the lingual surface and an asymmetrical crown-root margin which slants apically,*** scan data of SDUST-V1064 reveals new dental information of early-diverging titanosauriforms,for example,the enamel on the labial side thicker than that on the lingual side,an enamel/dentine ratio of 0.26 and a boss present on the lingual side of the dentine of the crown.

关键词： teeth Titanosauriformes Lower Cretaceous Yixian Formation Ningcheng

High-resolution CT-scan data reveals the tooth replacement pattern of the Late Jurassic tyrannosauroid Guanlong wucaii (Dinosauria, Theropoda)

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古脊椎动物学报（中英文） 2024年第3期62卷 225-244页

作者： KE Yi-Hui pei rui XU Xing Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of Sciences Beijing 100044 College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing 100049 Centre for Vertebrate Evolutionary Biology Yunnan University Kunming 650091

The Tyrannosauridae,which is characterized by specialized pachydont dentition and putative bone-cracking predatory strategies,is one of the most extensively studied theropod *** tooth replacement patterns,crucial for understanding feeding behaviors,have been thoroughly studied in this group,studies on non-tyrannosaurid tyrannosauroids are relatively *** study utilizes high-resolution CT data to investigate the tooth replacement pattern in two specimens of Guanlong wucaii,a Late Jurassic tyrannosauroid,and provides insights into the evolution of tooth replacement across ***-generation replacement teeth,a rarity observed mainly in giant predatory theropods(*** tyrannosaurids),were detected in the dentary dentition of the juvenile *** reconstructions display a consistent cephalad alternating tooth replacement pattern in the maxilla and the dentary of both of the examined individuals,with Z-spacing values exceeding *** Guanlong grows,the Z-spacing value in the maxillary dentition increases,resembling the ontogenetic changes documented in the ***,like Tarbosaurus,Guanlong also displays a discontinuity between the tooth replacement waves at the premaxilla-maxilla *** study thus demonstrates that some tyrannosaurid-like tooth replacement patterns were acquired before the origin of the Tyrannosauridae.

关键词： Late Jurassic Tyrannosauroidea tooth replacement 3D reconstruction

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论取水工程原水自流管水下施工技术

云南水力发电 2024年第1期40卷 1-4页

作者：裴瑞中国水利水电第十四工程局有限公司云南昆明650041

随着城市的高速发展,用水量也随之快速增长,输水管道的直径也越来越大,大管径沉管施工技术快速发展。以广西扶绥第二自来水厂取水工程原水自流管道沉管工程施工为例,系统地对自流管道沉管施工的关键工序进行介绍。

关键词：自流管水下沟槽开挖沉管施工关键工序

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应用OCS可编程控制器实现天然气计量核查

中国仪器仪表 2024年第4期 30-34页

作者：裴锐沈阳工业大学信息科学与工程学院辽宁沈阳110870 沈阳计量测试院辽宁沈阳110179

天然气计量现场需要对流量计算机进行计量核查,一次表流量计种类不同、组态参数配置复杂、受液晶显示窗口限制无法同步采集计量核查数据等问题制约了现场操作的可行性。本文研发了一种基于OCS可编程控制器的天然气计量网关,可针对不同... 详细信息

天然气计量现场需要对流量计算机进行计量核查,一次表流量计种类不同、组态参数配置复杂、受液晶显示窗口限制无法同步采集计量核查数据等问题制约了现场操作的可行性。本文研发了一种基于OCS可编程控制器的天然气计量网关,可针对不同厂家流量计算机的数据参数表,动态配置数据类型、从机地址、字节顺序、读写权限并映射到OCS的%R设备寄存器,解决了天然气计量核查数据预采集的难题;结合现场天然气介质组份、实时工况温度、实时工况压力值等数据,使用依据GB/T17747-2011《天然气压缩因子的计算》所研发的“天然气流量计算机压缩因子核查软件”,按流量计算机参数设置进行的计量核查;使用依据GB/T11062-2020《天然气发热量、密度、相对密度和沃泊指数的计算方法》所研发的“天然气流量能量计量核查软件”,进行天然气能量计量核查;针对天然气的现场计量核查,实现了硬件自动化采集预处理,软件自动化快速计算,有效提升了计量的工作效率和可靠性。

关键词： OCS控制器网关天然气流量计算机压缩因子能量计量

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天然气能量计量核查系统的研究与应用

中国仪器仪表 2024年第9期 29-33页

作者：裴锐沈阳工业大学信息科学与工程学院辽宁沈阳110870 沈阳计量测试院辽宁沈阳110179

本文研发了一套基于OCS控制器的天然气能量计量核查系统,针对SICK流量计算机的数据参数,动态配置数据类型、从机地址、字节顺序、读写权限并映射到OCS的%R类本地寄存器,解决了天然气计量核查数据受显示窗口限制预采集的难题。结合现场... 详细信息

本文研发了一套基于OCS控制器的天然气能量计量核查系统,针对SICK流量计算机的数据参数,动态配置数据类型、从机地址、字节顺序、读写权限并映射到OCS的%R类本地寄存器,解决了天然气计量核查数据受显示窗口限制预采集的难题。结合现场天然气介质组份、实时工况温度、实时工况压力等数据,使用依据GB/T 11062-2020《天然气发热量、密度、相对密度和沃泊指数的计算方法》所研发的“天然气流量能量计量核查软件”,进行天然气现场数据的能量计量核查。实现了硬件自动化采集预处理,软件自动化快速计算,有效提升了计量的工作效率和可靠性。

关键词： OCS控制器天然气 SICK 流量计算机能量计量计量核查

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涉江取水泵房深基坑施工技术研究

云南水力发电 2024年第1期40卷 118-124页

作者：裴瑞党昱明中国水利水电第十四工程局有限公司云南昆明650041

随着我国社会经济与建筑工程施工技术的发展,促进了各类大型项目工程的建设与发展,深基坑施工技术也随之快速发展。基坑工程面临的周围环境条件复杂多样,所采取的应对措施也不尽相同,以广西扶绥第二自来水厂取水工程取水泵房基坑工程施... 详细信息

随着我国社会经济与建筑工程施工技术的发展,促进了各类大型项目工程的建设与发展,深基坑施工技术也随之快速发展。基坑工程面临的周围环境条件复杂多样,所采取的应对措施也不尽相同,以广西扶绥第二自来水厂取水工程取水泵房基坑工程施工为例,在阐述施工工艺流程和主要施工方法的基础上,对围堰填筑施工、地下水控制、基坑开挖、和基坑支护的施工要点进行研究。

关键词：涉江围堰填筑深基坑施工泵房

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声呐流量计技术综述

中国仪器仪表 2024年第7期 22-28页

作者：裴锐贾丹平沈阳工业大学信息科学与工程学院辽宁沈阳110870 沈阳计量测试院辽宁沈阳110179

声呐流量计是一种基于声呐阵列波束形成技术的新型高端流量测量仪表,本文阐述了声呐流量计的测量原理和应用场景。首先,介绍了声呐流量计的发展现状;其次,阐述了测量介质流速的对流技术,主要包括湍流漩涡的移动速度和校准公式,以及测量... 详细信息

声呐流量计是一种基于声呐阵列波束形成技术的新型高端流量测量仪表,本文阐述了声呐流量计的测量原理和应用场景。首先,介绍了声呐流量计的发展现状;其次,阐述了测量介质流速的对流技术,主要包括湍流漩涡的移动速度和校准公式,以及测量介质声速的声学技术主要包括管道一维声波、GVF含气率和管道声速衰减公式,重点是在波数-频率(k-ω)域所形成的“对流脊”和“声学脊”;然后,与传统流量计比较分析了声呐流量计在衬里、HDPE、积垢、铁磁矿方面的应用优势和不足;最后,从纸浆和油砂行业应用列举了声呐流量计的技术特点。声呐流量计在准确度和可靠性方面有显著的技术优势,具有广阔的市场应用前景。

关键词：声呐流量流速声速多相流 GVF含气率

Disparity estimation for multi-scale multi-sensor fusion

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Journal of Systems Engineering and Electronics 2024年第2期35卷 259-274页

作者： SUN Guoliang pei Shanshan LONG Qian ZHENG Sifa YANG rui Suzhou Automotive Research Institute Tsinghua UniversitySuzhou 215000China Beijing Smarter Eye Technology Co. Ltd.Beijing 100023China College of Artifical Intelligence Tianjin University of Science and TechnologyTianjin 300457China State Key Laboratory of Automotive Safety and Energy Tsinghua UniversityBeijing 100084China Department of Precision Instrument Tsinghua UniversityBeijing 100084China

The perception module of advanced driver assistance systems plays a vital *** schemes often use a single sensor for data processing and environmental perception or adopt the information processing results of various sensors for the fusion of the detection *** paper proposes a multi-scale and multi-sensor data fusion strategy in the front end of perception and accomplishes a multi-sensor function disparity map generation scheme.A binocular stereo vision sensor composed of two cameras and a light deterction and ranging(LiDAR)sensor is used to jointly perceive the environment,and a multi-scale fusion scheme is employed to improve the accuracy of the disparity *** solution not only has the advantages of dense perception of binocular stereo vision sensors but also considers the perception accuracy of LiDAR *** demonstrate that the multi-scale multi-sensor scheme proposed in this paper significantly improves disparity map estimation.

关键词： stereo vision light deterction and ranging(LiDAR) multi-sensor fusion multi-scale fusion disparity map

Manipulating fast Li_(2)S redox via carbon confinement and oxygen defect engineering of In_(2)O_(3)for lithium-sulfur batteries

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Nano Research 2024年第6期17卷 5179-5187页

作者： Jinlei Qin rui Wang Zilong Yuan pei Xiao Deli Wang Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of EducationHubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Lithium-sulfur(Li-S)batteries have been considered as promising energy storage systems due to the merits of high energy density and low ***,the lithium polysulfides(LiPSs)diffusion and sluggish redox kinetics hamper t... 详细信息

关键词： Li-S batteries nitrogen-doped carbon confinement oxygen vacancies bidirectional Li_(2)S redox

Charge-asymmetry Fe_(1)Cu single-atom alloy catalyst for efficient oxygen reduction reaction

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Nano Research 2024年第6期17卷 4702-4710页

作者： Xudong Niu Jian Wei Dongyao Xu Jiajing pei rui Sui School of Chemical&Environmental Engineering China University of Mining and TechnologyBeijing 100083China Institute of Water Ecology and Environment Chinese Research Academy of Environmental SciencesBeijing 100083China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Engineering Research Center of Advanced Rare Earth Materials Department of ChemistryTsinghua UniversityBeijing 100084China

The development of high-efficient and low-cost oxygen reduction reaction(ORR)electrocatalysts is crucial for the practical applications of metal-air *** promising way is to develop Fe single-atom ***,the single active center and inherent electronic structure of Fe single-atom catalysts lead to the undesirable adsorption of multiple ORR ***,a charge-asymmetry single-atom alloy(SAA)catalyst with Fe-Cu dual sites supported on nitrogen-doped carbon nanosheet(Fe_(1)Cu SAA/NC)was *** characterizations manifest the existence of electron interaction between Fe and Cu in Fe_(1)Cu SAA/NC,which facilitates the adsorption of ORR intermediate for fast ***,the charge-asymmetry Fe_(1)Cu SAA/NC exhibits much faster ORR kinetics with a half-wave potential of 0.917 V *** hydrogen electrode(RHE),outperforming its counterparts in the ***,Fe_(1)Cu SAA/NC still maintains a high half-wave potential with only a drop of 5 mV after 5000 cycles,indicating excellent *** work provides a new strategy to design highly active and non-noble metal ORR electrocatalysts,which hold great potential for various catalytic applications.

关键词： Fe_(1)Cu single-atom alloy(SAA) electrocatalysis oxygen reduction reaction charge-asymmetry