检索结果-南通市图书馆

Atomization characteristics of pyrolysis oil derived from waste tires

Waste Disposal and Sustainable Energy 2024年第1期6卷 39-52页

作者： Hong Feng Zhitong Yin Qin Hong Yiming Hu lintao liu Jun Wang Qunxing Huang Yonggang Zhou ZJMI Environmental Energy Co. LtdHangzhou310003China Tongxiang Taiaisi Environmental Protection Energy Co. Ltd.Jiaxing314500China State Key Laboratory of Clean Energy Utilization Zhejiang UniversityHangzhou310027China Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province Jiaxing Research InstituteZhejiang UniversityJiaxing314031China

The atomization characteristics play a key role in the highly efficient combustion of pyrolysis oil derived from waste *** this study,the fuel properties of tire pyrolysis oil(TPO)were initially studied,and then a high-speed camera and a phase Doppler particle analyzer were employed to characterize the atomization feature of *** influence of pressure and nozzle orifice diameter on atomization characteristics such as spray angle,droplet velocity,and droplet size distribution was *** results showed that TPO had a high calorific value of about 43.6 MJ/kg and a low viscosity of 3.84×10^(–6)m^(2)/s at 40℃,which made it have the potential to be used as an alternative *** pressure expanded the spray angle and extended the spray in both the axial and radial *** increasing pressure,spray angle and droplet velocity raised,and the increase in crushing effect of air reduced the Sauter mean diameter(SMD)of the *** obtain proper atomization quality for combustion,the pressure is expected to be higher than 1.25 *** increasing nozzle orifice diameter,droplet velocity increased,and the SMD of the droplets increased as well due to weakened crushing effect of the ***,the pressure must be increased to maintain the atomization quality when using a nozzle with a larger *** to the lower viscosity,the velocity and particle size distribution of TPO droplets after atomization were smaller than those of diesel *** extremely small carbon black contained in TPO also contributed to the breaking of droplets and played a certain role in the size reduction of the oil droplets,but it may cause the risk of nozzle *** summary,TPO showed great atomization characteristics for alternative fuel applications.

关键词： Pyrolysis oil Atomization characteristics Spray angle Droplet velocity Droplet size distribution

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

时域连续下遥操作机器人时延测试系统设计

引用

仪表技术与传感器 2024年第7期 66-71页

作者：夏晶郝翔刘琳涛李重阳西安科技大学机械工程学院北京思灵机器人科技有限责任公司

针对已有的遥操作机器人主从时延测试方法因采样频率过低导致的时域离散输出信号测量精度不足的问题,设计并提出一种时域连续下遥操作机器人时延测试系统与方法。首先采用双通道示波器采集主从端设备的运动模拟量,并将其转化为电压-时... 详细信息

针对已有的遥操作机器人主从时延测试方法因采样频率过低导致的时域离散输出信号测量精度不足的问题,设计并提出一种时域连续下遥操作机器人时延测试系统与方法。首先采用双通道示波器采集主从端设备的运动模拟量,并将其转化为电压-时间曲线;然后通过平均滤波算法抑制波形曲线的周期性干扰,进一步消除系统波动误差;最后分析曲线斜率突变点记录主从两端运动发生时间戳,计算时间戳差值得到遥操作机器人的主从控制时延。远程超声扫查机器人时延测试实验表明:相较于现有测试方法,所提测试系统和方法测试结果更接近理论时延,验证了所提方法的有效性和可靠性。

关键词：时域连续遥操作机器人时延量化实时测量主从跟随

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

高潮位洪水的致灾机制、风险评估与预报评述

引用

地理科学进展 2024年第1期43卷 190-202页

作者：李思达方佳毅周巍蒋廷臣柳林涛冯曦大地测量与地球动力学国家重点实验室中国科学院精密测量科学与技术创新研究院武汉430077 杭州师范大学遥感与地球科学研究院杭州311121 浙江省城市湿地与区域变化研究重点实验室杭州311121 热带海洋环境国家重点实验室中国科学院南海海洋研究所广州510301 江苏海洋大学海洋技术与测绘学院江苏连云港222005 河海大学港口海岸与近海工程学院南京210098 海岸灾害及防护教育部重点实验室南京210098

全球气候变化背景下,由海平面上升带来的长期慢性水患——一种发生于高潮位附近的小型海岸洪水变得愈加频繁,对沿海社会经济和自然环境造成一定影响,是当前国际上的研究热点之一。论文梳理了高潮位洪水的定义,并从高潮位洪水驱动因素、... 详细信息

全球气候变化背景下,由海平面上升带来的长期慢性水患——一种发生于高潮位附近的小型海岸洪水变得愈加频繁,对沿海社会经济和自然环境造成一定影响,是当前国际上的研究热点之一。论文梳理了高潮位洪水的定义,并从高潮位洪水驱动因素、影响与风险评估以及高潮位洪水预报3个方面,系统总结了相关研究方法与研究成果的主要进展以及存在的主要问题。未来建议加强沿海地区高潮位洪水的驱动因素、风险评估以及预报的研究工作,包括对高潮位洪水的广泛监测,从驱动因素的变化和驱动因素间的相互作用角度研究高潮位洪水的形成,对沿海关键地区和重要基础设施开展全面的高潮位洪水风险评估研究,开展更加准确可靠的高潮位洪水发生频次、持续时间的预报工作,最终服务于沿海城市高潮位洪水的防灾减灾。

关键词：高潮位洪水海岸洪水海平面上升风险评估预报模型

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

海洋重力仪金属零长弹簧的性能研究及研制

引用

大地测量与地球动力学 2024年第7期44卷 759-763页

作者：汪龙邹舟吴鹏飞柳林涛中国科学院精密测量科学与技术创新研究院大地测量与地球动力学国家重点实验室武汉市430077

揭示海洋重力仪金属零长弹簧的物理特性,阐述基于Fe-Ni系恒弹性合金研制金属零长弹簧的工艺,并系统总结关键研制过程及研制难点,研制出一批性能优异、零长状态佳的海洋重力仪金属零长弹簧。

关键词：金属零长弹簧恒弹性合金预应力反向旋转海洋重力仪

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Rising trends of global precipitable water vapor and its correlation with flood frequency

引用

Geodesy and Geodynamics 2023年第4期14卷 355-367页

作者： Dong Ren Yong Wang Guocheng Wang lintao liu State Key Laboratory of Geodesy and Earth's Dynamics Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430077China University of Chinese Academy of Sciences Beijing 100049China Tianjin Chengjian University Tianjin 300384China

Using 4 global reanalysis data sets, significant upward trends of precipitable water vapor(PWV) were found in the 3 time periods of 1958-2020, 1979-2020, and 2000-2020. During 1958-2020, the global PWV trends obtained using the ERA5 and JRA55 data sets are 0.19 ± 0.01 mm per decade(1.15 ± 0.31%)and 0.23 ± 0.01 mm per decade(1.45 ± 0.32%), respectively. The PWV trends obtained using the ERA5,JRA55, NCEP-NCAR, and NCEP-DOE data sets are 0.22 ± 0.01 mm per decade(1.18 ± 0.54%),0.21 ± 0.00 mm per decade(1.76 ± 0.56%), 0.27 ± 0.01 mm per decade(2.20 ± 0.70%) and 0.28 ± 0.01 mm per decade(2.19 ± 0.70%) for the period 1979-2020. During 2000-2020, the PWV trends obtained using ERA5, JRA55, NCEP-DOE, and NCEP-NCAR data sets are 0.40 ± 0.25 mm per decade(2.66 ± 1.51%),0.37 ± 0.24 mm per decade(2.19 ± 1.54%), 0.40 ± 0.26 mm per decade(1.96 ± 1.53%) and 0.36 ± 0.25 mm per decade(2.47 ± 1.72%), respectively. Rising PWV has a positive impact on changes in precipitation,increasing the probability of extreme precipitation and then changing the frequency of flood ***, exploring the relationship between PWV(derived from ERA5 and JRA55) change and flood disaster frequency from 1958 to 2020 revealed a significant positive correlation between them, with correlation coefficients of 0.68 and 0.79, respectively, which explains the effect of climate change on the increase in flood disaster frequency to a certain extent. The study can provide a reference for assessing the evolution of flood disasters and predicting their frequency trends.

关键词： Precipitable water vapor(PWV) Linear trend Correlation analysis Flood frequency

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

CHZ-Ⅱ海洋重力仪研制与实践

引用

测绘学报 2024年第4期53卷 620-628页

作者：柳林涛何建刚许江宁刘雷钧高金耀孙中苗吴太旗梁星辉胡明郎骏健何泓洋中国科学院精密测量科学与技术创新研究院大地测量与地球动力学国家重点实验室湖北武汉430077 海军工程大学湖北武汉430033 自然资源部第二海洋研究所浙江杭州310012 西安测绘研究所陕西西安710054 海军海洋测绘研究所天津300061

海洋重力仪是获取高精度高分辨率海洋重力场的重要仪器,主要应用于资源勘探、大地水准面精化、海洋科学研究和重力辅助惯性导航等领域。我国现有的海洋重力仪主要依靠国外进口,不仅价格高,而且在仪器的引进、维护等方面存在诸多的不便... 详细信息

海洋重力仪是获取高精度高分辨率海洋重力场的重要仪器,主要应用于资源勘探、大地水准面精化、海洋科学研究和重力辅助惯性导航等领域。我国现有的海洋重力仪主要依靠国外进口,不仅价格高,而且在仪器的引进、维护等方面存在诸多的不便。在科技部首批重大科学仪器专项的支持下,基于CHZ海洋重力仪成功研制出具有完全自主知识产权的CHZ-Ⅱ弹簧式海洋重力仪。该新型重力仪采用金属零长弹簧作为测量元件,其独特的轴对称垂直悬挂结构可克服交叉耦合效应;高精度伺服控制技术及强阻尼的应用可克服载体扰动的影响,确保仪器在不同海况下保持测量精度;高精度恒温技术及温度补偿技术可消除环境温度波动对仪器测量精度的影响。本文介绍了该仪器的工作原理、系统构成、技术特点及测试结果。静态试验表明其月漂移优于3 mGal;码头系泊试验表明其动态精度达到0.2 mGal,能清晰反映海潮的重力变化特征;总航程超过5万海里船载试验表明其综合测量精度优于1 mGal。仪器在精度和稳定性上达到与国内外同类仪器并跑水平,可替代当前国外进口的海洋重力仪。

关键词： CHZ-Ⅱ海洋重力仪零长弹簧硅油阻尼高精度恒温技术陀螺稳定平台海洋重力测量

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Structure characteristics and microwave dielectric properties of Pr_(2)(Zr_(1-x)Ti_(x))_(3)(MoO_(4))_(9) solid solution ceramic with a stable temperature coefficient

引用

Journal of Materials Science & Technology 2022年第21期116卷 121-129页

作者： Huanrong Tian Jinjie Zheng lintao liu Haitao Wu Hideo Kimura Yizhong Lu Zhenxing Yue School of Environmental and Material Engineering Yantai UniversityYantai 264005China School of Materials Science and Engineering University of JinanJinan 250022China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Pr_(2)(Zr_(1−x)Ti_(x))_(3)(MoO_(4))_(9)(x=0.1-1.0)ceramics were prepared via a conventional solid-state method,the dependence of crystal structure and bond characteristics on microwave dielectric properties was investigated *** X-ray diffraction patterns indicated that the single-phase Pr_(2)Zr_(3)(MoO_(4))_(9)structure was formed in all the *** the Ti^(4+)content increased,the lattice volume gradually decreased,which was ascribed to the fact that the ionic radius of Ti^(4+)was smaller than that of Zr^(4+).Notably,outstanding microwave dielectric properties withεr of 10.73-16.35,Q·f values of 80,696-18,726 GHz and minorτ_(f) values−14.1-−2.6 ppm/℃were achieved in Pr_(2)(Zr_(1−x)Ti_(x))_(3)(MoO_(4))_(9)***ε_(r) increased with the rising x values,which was associated with the increase ofα/Vm *** decreasing Q·f was affected by the decline of lattice energy of[Zr/TiO_(6)]***τf value was dominated by[Zr/TiO_(6)]octahedral distortion,Mo-O bond energy,bond strength and B-site bond ***,infrared reflection spectra suggested that the properties were mainly caused by the absorption of phonon,and the dielectric loss could be further reduced by optimizing the experimental process.

关键词： Pr_(2)(Zr_(1-x)Ti_(x))_(3)(MoO_(4))_(9) Normalized bond length Bond characteristics Raman spectra

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

连续重力观测潮汐与非潮汐信号提取与处理平台设计与实现

引用

中国地震 2024年第1期40卷 132-143页

作者：韩宇飞石志敏梁星辉祝杰邹锐柳林涛王勇中国科学院精密测量科学与技术创新研究院武汉430071 中国科学院大学北京100049 中国地震台网中心北京100045

介绍了连续重力观测潮汐与非潮汐信号提取与处理平台的平台架构、数据库、主要功能模块、技术特点与功能特性等。该平台面向中国地震重力站网的大网运维业务需求和海量数据处理需求,以连续重力数据处理中的潮汐信号处理、非潮汐信号处... 详细信息

介绍了连续重力观测潮汐与非潮汐信号提取与处理平台的平台架构、数据库、主要功能模块、技术特点与功能特性等。该平台面向中国地震重力站网的大网运维业务需求和海量数据处理需求,以连续重力数据处理中的潮汐信号处理、非潮汐信号处理、时频变换等科学计算为核心,基于大数据技术实现了中国地震重力站网海量数据的自动清理、数据质量自动评估、数据产品自动产出,产出重力潮汐因子、时频图等24种数据产品,提升了连续重力观测数据的应用效能和地震重力站网的运行、管理和服务水平。

关键词：中国地震重力站网连续重力观测重力固体潮非潮汐信号

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Relating Initial Texture to Deformation Behavior During Cold Rolling and Static Recrystallization Upon Subsequent Annealing of an Extruded WE43 Alloy

引用

Acta Metallurgica Sinica(English Letters) 2022年第11期35卷 1793-1811页

作者： Qinghang Wang Haowei Zhai Hongbo Xia lintao liu Junjie He Dabiao Xia Hong Yang Bin Jiang School of Mechanical Engineering Yangzhou UniversityYangzhou 225127China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China School of Materials and Energy Yunnan UniversityKunming 650599China The Center of New Energy Materials and Manufacturing Jihua LaboratoryFoshan 528000China

Deformation behaviors during cold rolling and static recrystallization behaviors upon subsequent annealing of an extruded WE43 alloys with different initial textures were investigated in this *** types of differently textured WE43 initial alloys were labeled as samplesⅠ,ⅡandⅢ.The results showed that multiple twinning modes and basal slip dominated the deformation of samples during cold ***-rolled sampleⅠactivated the larger number of double twins with high strain energy,accompanied by the more uniform strain distribution,than cold-rolled samplesⅡandⅢ.During subsequent annealing,recrystallized grains preferentially occurred in double twins,twin-twin intersections and grain boundaries,thereby making cold-rolled sampleⅠhave the more rapid recrystallization *** recrystallization textures formed in three types of cold-rolled samples at the recrystallization nucleation stage,and they never largely changed with the annealing time due to the uniform grain growth induced by the solute drag and the precipitation pinning at grain *** full recrystallization,the grain growth was controlled by the solute drag,instead of precipitates which were re-dissolved into the ***,the nucleation and growth kinetics of static recrystallization were calculated,and the effects of initial texture on activation energies of recrystallization nucleation and growth were discussed.

关键词： WE43 alloy Texture Cold rolling Annealing Static recrystallization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Novel Mg-Bi-Mn wrought alloys:The effects of extrusion temperature and Mn addition on their microstructures and mechanical properties

引用

Journal of Magnesium and Alloys 2022年第9期10卷 2588-2606页

作者： Qinghang Wang Haowei Zhai lintao liu Hongbo Xia Bin Jiang Jun Zhao Daolun Chen Fusheng Pan School of Mechanical Engineering Yangzhou UniversityYangzhou 225127China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China School of Mechanical and Electrical Engineering Hunan City UniversityYiyang 413002China Department of Mechanical and Industrial Engineering Ryerson UniversityTorontoON M5B 2K3Canada

Designing and developing the Mg alloys with low cost and high performance is of the great *** Mg-1Bi-xMn(x=0,1and 2 wt.%)extruded alloys,in this work,were fabricated at different extrusion temperatures(220,250 and 300℃).The effects of extrusion temperature and Mn addition on the microstructures and mechanical properties of extruded alloys at room temperature were *** results showed that decreasing the extrusion temperature could refine the average grain size,weaken the basal fiber texture intensity and improve the microstructural homogeneity of extruded *** the Mn element was added to the Mg-1Bi alloy,the average grain size further ***,the number fraction of low angle grain boundaries(LAGBs)increased,along with the occurrence of regions without dynamic recrystallization(unDRX).The combined effects of grain refinement and coarse unDRXed structure made the textures of the extruded Mg-1Bi-xMn alloys never obviously *** few large size un-dissolved second phases,fine Mg_(3)Bi_(2) and α-Mn phases were precipitated in the extruded Mg-1Bi-xMn alloys and partial nano-scaleα-Mn particles pined at grain boundaries(GBs)to effectively impede the migration of GBs for grain *** variations determined the extruded Mg-1Bi-2Mn alloy to exhibit the highest yield strength of~319.2 MPa with the appropriate elongation-to-failure of~13%at the extrusion temperature of 220℃,and they enabled the extruded Mg-1Bi-1Mn alloy to show the highest elongation-to-failure of~26%without the obvious loss of yield strength of~252.1 MPa.

关键词： Mg-Bi-Mn alloys Extrusion temperature Mn addition Microstructure Mechanical property

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：