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期刊叠片法测量脉冲X射线源焦斑被引量:1
《强激光与粒子束》2010年第12期3057-3061,共5页高屹 马继明 张众 张鹏飞 孙江 王志国 尹佳辉 梁天学 杜泰斌 
国家自然科学基金项目(10775112)
介绍了叠片法测量脉冲X射线源焦斑的原理。对确定结构和尺寸的金属、薄膜叠片及测试系统布局,数值计算了叠片法的空间分辨及对均匀分布线光源的输出响应,得到响应曲线半高宽与焦斑尺寸的对应关系。计算结果表明,叠片法不适用于测量小于2...显示全部
关键词:叠片法 尺寸测量 脉冲 射线源 焦斑尺寸 X-RAY size measurement 杆箍缩二极管 响应曲线 系统布局 数值计算 输出响应 确定结构 空间分辨 均匀分布 计算结果 感应电压 对应关系 线光源 半高宽 
期刊The effect of pore size and porosity of Ti6Al4V scaffolds on MC3T3-E1 cells and tissue in rabbits被引量:1
《中国科学:技术科学英文版》2019年第7期1160-1168,共9页LUAN HuiQin WANG LiTing REN WeiYan CHU Zhao Wei HUANG YunFei LU ChengLin FAN YuBo 
supported by the China National Key Research and Development Plan Project (Grant No. 2016YFB1101102);Fundamental Research Funds for Central Public Welfare Research Institutes (Grant No. 118009001000160001)
Electron beam melting(EBM) allows the fabrication of specific porous titanium implants, whereas their in vitro and in vivo biological performance should be further investigated. In this study, we examined the porous T...显示全部
关键词:PORE size POROSITY porous titanium alloy scaffolds OSTEOGENESIS bone DEFECT 
期刊三维箱体收敛于二维水动力学特性影响因素的研究
《武汉理工大学学报:交通科学与工程版》2019年第5期942-946,共5页薛继阳 熊鳌魁 
船舶与海洋工程中对于一类细长体常采用基于二维思想的所谓“切片理论”进行水动力计算.直观上,物体越长其两端的三维影响所占比重越小,直至可以忽略.文中利用AQWA软件对系列不同长度的箱型体进行三维水动力计算,通过与对应的二维级数...显示全部
关键词:尺寸 水深 阻尼 附加质量 二维级数解 
期刊Droplet spectra and high-speed wind tunnel evaluation of air induction nozzles
《农业科学与工程前沿:英文版》2018年第4期442-454,共13页Qing TANG Liping CHEN Ruirui ZHANG Min XU Gang XU Tongchuan YI Bin ZHANG 
supported by the National Natural Science Foundation of China(31601228,31701315);the Youth Science Fund of the Beijing Natural Science Foundation(6164032);the Youth Science Fund of Beijing Academy of Agriculture and Forestry Sciences(QNJJ201631);Beijing Talent Program for Ruirui Zhang
A series of air induction nozzles were tested in a high-speed wind tunnel.Droplet size spectra were measured for four air induction nozzles(IDK-120-01,IDK-120-02,IDK-120-03 and IDK-120-04)each at three spray pressures...显示全部
关键词:AIR INDUCTION NOZZLE wind tunnel AERIAL spray DROPLET size spectra 
期刊Mineral composition and particle size distribution of river sediment and loess in the middle and lower Yellow River被引量:1
《国际泥沙研究:英文版》2021年第3期392-400,共9页Shimin Tian Zhiwei Li Zhaoyin Wang Enhui Jiang Wenlong Wang Meng Sun 
The current study was supported by the National Key Research and Development Program of China(Grant No.2018YFC0407401-03);National Natural Science Foundation of China(Grant Nos.51979120,51979012,and 51539004);Natural Science Foundation of Hunan Province,China(Grant No.2020JJ3036);Research Fund of Education Bureau of Hunan Province,China(Grant No.19A017);The authors thank Drs.
Hyperconcentrated flows often occur in the middle and lower Yellow River(MLYR)and its tributaries,within which the main sediment source originates from the Loess Plateau of China due to serious water erosion.Little is...显示全部
关键词:River sediment LOESS Mineral composition Particle size distribution Clay minerals 
期刊Relationship between contrast sensitivity and corneal shape following overnight orthokeratology
《国际眼科杂志:英文版》2019年第2期275-279,共5页Li-Li Liu Li-Ping Gong Yue-Yuan Xu Xuan Zhu Kaddie Kwok Chen Wei-Feng Liu 
AIM: To evaluate the relationship between contrast sensitivity(CS) and corneal shape following overnight orthokeratology(OK). METHODS: We conducted a retrospective clinical study of 80 lens-wearing myopia patients, al...显示全部
关键词:ORTHOKERATOLOGY CONTRAST sensitivity PUPIL size area shaped CORNEA MYOPIA 
期刊Characteristics of multiple nodules in a patient with pulmonary Langerhans cell histiocytosis: A case report
《世界临床病例杂志》2019年第17期2519-2525,共7页Nobuhiro Kanaji Yoshimasa Tokunaga Ryou Ishikawa Naoki Watanabe Norimitsu Kadowaki 
BACKGROUND The common computed tomography findings of pulmonary Langerhans cell histiocytosis (PLCH) are multiple cysts and micronodules predominantly in middle to upper lung lobes.Non-cystic nodules and large nodules...显示全部
关键词:LANGERHANS cell HISTIOCYTOSIS MULTIPLE Non-cystic NODULE Distribution size Case report 
期刊Criteria for Beverloo's scaling law
《中国物理B:英文版》2019年第1期628-633,共6页张晟 林平 杨光辉 万江锋 田园 杨磊 
Project supported by the National Natural Science Foundation of China(Grant Nos.11705256 and 11605264)
Beverloo's scaling law can describe the flow rate of grains discharging from hoppers. In this paper, we show that the Beverloo's scaling law is valid for varying material parameters. The flow rates from a hopp...显示全部
关键词:Beverloo’s law ORIFICE DIAMETER HOPPER size DISCRETE element method 
期刊Effect of Nitriding Current Density on the Surface Properties and Crystallite size of Pulsed Plasma-Nitrided AISI 316L
《材料科学与化学工程(英文)》2015年第1期45-51,共7页J. C. Díaz-Guillén E. E. Granda-Gutiérrez G. Vargas-Gutiérrez M. R. Díaz-Guillén J. A. Aguilar-Martínez L. álvarez-Contreras 
In this work, plasma-nitrided AISI 316L stainless steel samples were performed by ion nitriding process under pulsed direct current (DC) discharge at different current densities (1 to 2.5 mA/ cm2). The effect of nitri...显示全部
关键词:Plasma NITRIDING Strain CRYSTALLITE size HARDNESS WEAR STAINLESS 
期刊Particle size Distribution and Hydraulic Conductivity in Coastal Non-Agricultural Land in Gaza Coastal Plain
《地球科学国际期刊(英文)》2018年第10期619-633,共15页Jamal Safi Yasser El-Nahhal Mohamed Safi 
Background: Particle size distribution and hydraulic conductivity of coastal no-agricultural lands are not available. This study characterized the particle size distribution and hydraulic conductivity on coastal non-a...显示全部
关键词:Particle size Hydraulic CONDUCTIVITY SOIL DISTURBANCE COASTAL Land SOIL Profile ECOSYSTEM 
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