Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Dongya Li"'
Publikováno v:
地震科学进展, Vol 54, Iss 2, Pp 153-158 (2024)
The observation object of the geoelectric field observation system is the geoelectric field intensity vector. Its purpose is to explore the change of the geoelectric field before earthquake, to obtain the electrical structure and its change law of un
Externí odkaz:
https://doaj.org/article/892ea83e1b2a4b919c31947c754d285a
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-9 (2023)
Abstract The purpose of this trial was to clinically assess the effect and safety of Adipose Tissue-derived Stem Cells (ADSCs) treatment on primary Sjogren’s Syndrome (pSS). In this 6-month randomized, triple-blind, placebo-controlled clinical tria
Externí odkaz:
https://doaj.org/article/8d94a384e57744548d58a99b89b13e2e
Publikováno v:
Materials, Vol 17, Iss 10, p 2286 (2024)
Unbonded flexible risers consist of several helical and cylindrical layers, which can undergo large bending deformation and can be installed to different configurations to adapt to harsh marine environments, and is a key equipment in transporting oil
Externí odkaz:
https://doaj.org/article/cffaf1e575284fe5990a48196e4dd8a1
Publikováno v:
地震科学进展, Vol 53, Iss 6, Pp 278-284 (2023)
This paper presents a statistical analysis of the internal accuracy of the fixed-point deformation observation data of Wuzhishan deformation station from January 2016 to December 2021. The internal accuracy of the station’s water pipe tiltmeter and
Externí odkaz:
https://doaj.org/article/9027c3e8ecbf44888b7fcdda6ba858f2
Publikováno v:
Lubricants, Vol 11, Iss 6, p 251 (2023)
Misalignment or unbalanced loading of machine tool spindle bearings often results in skewed bearing operation, which makes the spindle more susceptible to failure. In addition, due to the weak impact signal of the bearing in skewed operation, a singl
Externí odkaz:
https://doaj.org/article/96e36f7b3816421dab3fcc6a0aaddd12
Publikováno v:
Materials, Vol 16, Iss 5, p 2109 (2023)
This paper presents the results of research on laser lap welding technology of heterogeneous materials and a laser post-heat treatment method to enhance welding performance. The purpose of this study is to reveal the welding principle of austenitic/m
Externí odkaz:
https://doaj.org/article/febe6d1c1d574cfc9e77f402cccae12a
Publikováno v:
Applied Sciences, Vol 13, Iss 7, p 4439 (2023)
For the trajectory optimization of the time–jerk of robotic arms with a chicken swarm optimization algorithm, using five-order B-spline interpolation can ensure smooth and continuous acceleration, but, due to the performance problems of the algorit
Externí odkaz:
https://doaj.org/article/830073acbab74dd9a4db411c433b99a5
Publikováno v:
International Journal of Extreme Manufacturing, Vol 5, Iss 3, p 035007 (2023)
Complex-shaped optical lenses are of great interest in the areas of laser processing, machine vision, and optical communications. Traditionally, the processing of complex optical lenses is usually achieved by precision machining combined with post-gr
Externí odkaz:
https://doaj.org/article/cade7baba83a47b7b64c2a914858beab
Autor:
Chao Zhang, Xiaohui Yi, Lingtian Xie, Hongbin Liu, Di Tian, Bo Yan, Dongya Li, Huanxuan Li, Mingzhi Huang, Guang-Guo Ying
Publikováno v:
Environment International, Vol 156, Iss , Pp 106650- (2021)
Neonicotinoids (NEOs) are the most widely used pesticides and have posed a serious threat to human health. However, data on human exposure to NEOs are extremely scarce. To bridge this gap, human exposure potential of NEOs through drinking water consu
Externí odkaz:
https://doaj.org/article/5df53c8a4f0d4cfd9e7b17a3468fbddc
Publikováno v:
Mathematics, Vol 10, Iss 24, p 4639 (2022)
This paper studies the synchronization problem for a class of chaotic systems subject to disturbances. The nonlinear functions contained in the master and slave systems are assumed to be incremental quadratic constraints. Under some assumptions, a fe
Externí odkaz:
https://doaj.org/article/12aa6feddf3b45638ffe7e7e406543d7