Zobrazeno 1 - 10
of 607
pro vyhledávání: '"Li Qingchun"'
Publikováno v:
High Temperature Materials and Processes, Vol 43, Iss 1, Pp id. 1489-7 (2024)
Ultra-thin grain-oriented electrical steel with a thickness of 80 µm is produced by one-step-rolling with industrial grain-oriented electrical steel. The research employs electron back-scattering texture analysis technique to investigate the evoluti
Externí odkaz:
https://doaj.org/article/b4ddc0902a4843168dcc0bf63b41e329
Publikováno v:
Shipin yu jixie, Vol 39, Iss 8, Pp 122-128,226 (2023)
Objective: Improve the detection accuracy and efficiency of apple surface defects. Methods: An detection method for apple surface defects was established based on an improved convolutional neural network (CNN) and data augmentation method. Firstly, t
Externí odkaz:
https://doaj.org/article/788124912a2a4dae8e02cfa6b0bd0fa4
Autor:
GONG Lingfeng, ZHANG Yunda, TIE Yongbo, GAO Yanchao, LIU Wen, LI Qingchun, ZHANG Bin, YANG Hong, LI Guanghui, LU Jiayan, LU Tuo
Publikováno v:
Dizhi lixue xuebao, Vol 28, Iss 6, Pp 1024-1034 (2022)
Multi-period debris flows have been developed in the last glacial period of the late Pleistocene-Holocene near the Grand Bend of the Yarlung Zangbo River in southeast Tibet, which combined to form a modern large-scale fan-shaped accumulation. The deb
Externí odkaz:
https://doaj.org/article/b5959963dca04610b9edd328230ef785
Publikováno v:
High Temperature Materials and Processes, Vol 41, Iss 1, Pp 523-530 (2022)
In this study, the ductile iron ingots are cast using a metal mold, and the riser neck diameter is changed to control the micro-shrinkage porosity, which can affect the ultra-low temperature toughness of ferritic ductile iron. The metallographic stru
Externí odkaz:
https://doaj.org/article/892f7d70bfdc4c11a629f9a729d13e18
Autor:
Li, Qingchun, Chen, Haomeng
In this paper, we investigate the Cauchy problem of the parabolic-parabolic Keller-Segel system with the logistic-type term $au-bu^\gamma$ on $\mathbb{R}^N, N\geq2$. We discuss the global boundedness of classical solutions with nonnegative bounded an
Externí odkaz:
http://arxiv.org/abs/2410.08648
Publikováno v:
High Temperature Materials and Processes, Vol 36, Iss 9, Pp 885-890 (2017)
In this study, a Cu/Al composite ingot was prepared by casting aluminum method, and the effects of the Cu concentration distribution in the transition layer on the solidification microstructure were examined during the recombination process of solid
Externí odkaz:
https://doaj.org/article/ea359b7707b5431a9dd5572f6cf7f07a
Publikováno v:
High Temperature Materials and Processes, Vol 35, Iss 8, Pp 827-832 (2016)
The dissolution process of solid Cu in liquid Al influences the compound quality directly when fabricating the copper cladding aluminum (CCA) composite castings utilizing the casting aluminum method. Dissolution rate of solid Cu is investigated utili
Externí odkaz:
https://doaj.org/article/2ccf2e816aeb4dd4b2626709e34b1c44
Publikováno v:
China Foundry, Vol 11, Iss 6, Pp 498-502 (2014)
In-situ observation of eutectic solidification of Cr12MoV steel was conducted using high temperature confocal laser-scanning microscopy. The semi-solid isothermal treatment temperature of the steel was determined by thermodynamic calculation using Th
Externí odkaz:
https://doaj.org/article/2a747305ca86452184d1c60c20944068
The spread of COVID-19 revealed that transmission risk patterns are not homogenous across different cities and communities, and various heterogeneous features can influence the spread trajectories. Hence, for predictive pandemic monitoring, it is ess
Externí odkaz:
http://arxiv.org/abs/2209.09448
Publikováno v:
In Sensors and Actuators: A. Physical 1 November 2024 378