SPHERICITY

作品数：28被引量：33H指数：3
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Correlation of 2D and 3D particle properties with simulated particle imaging dataset
《Particuology》2025年第1期152-170,共19页Thomas Buchwald Ralf Ditscherlein Urs A.Peuker 
supported by the German Federal Ministry of Education and Research through the research project InfraDatRec(grant no.03XP0426A).
Particle size and shape characteristics are commonly measured with two-dimensional(2D)imaging techniques,two of which are static or dynamic imaging techniques.These 2D particle characteristics need to be applied to pa...
关键词：Imaging techniques Static image analysis Dynamic image analysis CIRCULARITY SPHERICITY Shape factors Equivalent particle size Particle characteristics Correlation 
Study of the Transport Behavior of Multispherical Proppant in Intersecting Fracture Based on Discrete Element Method
《Energy Engineering》2025年第1期185-201,共17页Chengyong Peng JianshuWu Mao Jiang Biao Yin Yishan Lou 
funded by the project of the Major Scientific and Technological Projects of CNOOC in the 14th Five-Year Plan(No.KJGG2022-0701);the CNOOC Research Institute(No.2020PFS-03).
To analyze the differences in the transport and distribution of different types of proppants and to address issues such as the short effective support of proppant and poor placement in hydraulically intersecting fract...
关键词：Hydraulic fracturing discrete element method PROPPANT SPHERICITY CFD-DEM 
Three-dimensional analysis of age and sex differences in femoral head asphericity in asymptomatic hips in the United States
《World Journal of Orthopedics》2024年第8期754-763,共10页Mahad M Hassan Aliya G Feroe Brenton W Douglass Andrew E Jimenez Benjamin Kuhns Charles F Mitchell Robert L Parisien Daniel A Maranho Eduardo N Novais Young-Jo Kim Ata M Kiapour 
BACKGROUND The sphericity of the femoral head is a metric used to evaluate hip pathologies and is associated with the development of osteoarthritis and femoral-acetabular impingement.AIM To analyze the three-dimension...
关键词：HIP Femoral head SPHERICITY Skeletal growth Sex differences 
Preoperative prediction of hepatocellular carcinoma microvascular invasion based on magnetic resonance imaging feature extraction artificial neural network
《World Journal of Gastrointestinal Surgery》2024年第8期2546-2554,共9页Jing-Yi Xu Yu-Fan Yang Zhong-Yue Huang Xin-Ye Qian Fan-Hua Meng 
the Tsinghua University Institute of Precision Medicine,No.2022ZLA006.
BACKGROUND Hepatocellular carcinoma(HCC)recurrence is highly correlated with increased mortality.Microvascular invasion(MVI)is indicative of aggressive tumor biology in HCC.AIM To construct an artificial neural networ...
关键词：Hepatocellular carcinoma Microvascular invasion Artificial neural network Magnetic resonance imaging Tumor sphericity Area under the curve 
Combustion characteristics of low-quality lignite for different bed material sphericities in a circulating fluidized bed boiler:A numerical study
《Particuology》2024年第7期364-382,共19页Barış Gürel Gülşah Karaca Dolgun Osman İpek Ali Keçebaş 
This study delves into the combustion behavior of various lignite types within a circulating fluidized bed boiler(CFBB),with a primary focus on the impact of different bed material sphericity ratios(0.5,0.7,and 0.9).U...
关键词：Circulating fluidized bed boiler Computational particle fluid dynamics method Particle sphericity ratios NO_(x)and SO_(2)emissions Energy production efficiency 
Blockage of the Deep-Sea Mining Pump Transporting Large Particles with Different Sphericity
《China Ocean Engineering》2023年第2期343-352,共10页TENG Shuang KANG Can LI Ming-hui QIAO Jin-yu DING Ke-jin 
financially supported by the Science and Technology Plan Project of State Administration for Market Regulation of China (Grant No. 2021MK060);the National Key Research and Development Program of China (Grant No. 2021YFC2801600);the Postgraduate Research and Practice Innovation Program of Jiangsu Province (Grant No. KYCX20_3082);the Science and Technology Innovation Project from China State Shipbuilding Corporation Limited。
The present study aims to plumb blockage of the deep-sea mining pump transporting large particles with different shapes. A numerical work was performed through combining the computational fluid dynamics(CFD) technique...
关键词：deep-sea mining pump particle sphericity velocity triangle force angle particle trajectory BLOCKAGE 
Theoretical Calculation of ITZ Volume Fraction and Morphological Characterization of Crushed Stone in Concrete
《Journal of Wuhan University of Technology(Materials Science)》2022年第4期656-665,共10页ZHANG Jianjian PENG Liang ZHANG Guoqiang SUN Guowen LIU Zhiyong 
Funded by the National Natural Science Foundations of China(No.52178237);the Graduate Innovation Fund of Shijiazhuang Tie Dao University(YC2021064)。
According to the morphological characteristics of crushed stone,the sphericity was introduced to establish the theoretical calculation model of volume fraction of interfacial transition zone(ITZ)around crushed stone.T...
关键词：crushed stone SPHERICITY interfacial transition zone image processing CONCRETE 
Spatial phase structure and oxidation process of Al-W alloy powder with high sphericity被引量：1
《Journal of Materials Science & Technology》2022年第19期62-72,共11页Aobo Hu Shuizhou Cai 
supported by the National Natural Science Foundation of China(No.51871106).We express our grat-itude for analyzing and testing of Huazhong University of Science and Technology Analytical&Testing Center.
In this study,Al-30W(wt.%)alloy powder was prepared by Aluminothermic reduction and hightemperature gas atomization.We then studied the phase composition,surface morphology,spatial phase structure,and thermal oxidatio...
关键词：Aluminothermic reduction High-temperature gas atomization Al/W amorphous alloy phase Metastable Al/W intermetallic compound phase Thermal oxidation process 
Sphericity and Identity Test for High-dimensional Covariance Matrix Using Random Matrix Theory
《Acta Mathematicae Applicatae Sinica》2021年第2期214-231,共18页Shou-cheng YUAN Jie ZHOU Jian-xin PAN Jie-qiong SHEN 
supported by the National Natural Science Foundation of China(Nos.61374027,11871357);the Sichuan Science and Technology Program(Nos.2019YJ0122)。
This paper addresses the issue of testing sphericity and identity of high-dimensional population covariance matrix when the data dimension exceeds the sample size.The central limit theorem of the first four moments of...
关键词：sphericity test identity test high-dimensional covariance matrix spiked model spectral distribution 
Fertilizer sphericity measuring device based on equatorial and meridian circles
《Information Processing in Agriculture》2021年第1期52-63,共12页Hongjian Zhang Junlin Mu Shuangxi Liu Zhen Wang Guikun Chu Jinxing Wang 
This work was supported in part by the National Key Research and Development Plan of China(2016YFD0201104),National Apple Industry Technology System Project.
Fertilizer sphericity is an important assessment index of appearance quality that affects the fertilization effect.A fertilizer sphericity measuring device based on machine vision was designed aimed at low precision a...
关键词：FERTILIZER SPHERICITY Equatorial and meridian circles Machine vision Measuring device Measuring method 
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