Zobrazeno 1 - 10
of 2 257
pro vyhledávání: '"Wang Xuewen"'
Publikováno v:
应用气象学报, Vol 35, Iss 2, Pp 237-246 (2024)
During the process of cloud-to-ground lightning connection, the propagation of downward leader to the near-ground area can elevate the electric field at one or several points on the surface of ground tip object to the breakdown threshold of surroundi
Externí odkaz:
https://doaj.org/article/df5fe384538e48d99e16401d063bfd5f
Publikováno v:
应用气象学报, Vol 34, Iss 6, Pp 749-758 (2023)
Tall buildings distort the electric field of the surrounding environment, resulting in a relatively strong electric field at top corners, which affects the lightning strike process, and the protection effect that short buildings receive from tall bui
Externí odkaz:
https://doaj.org/article/b898ff26d90d4ed0a019320a0db52221
Publikováno v:
Gong-kuang zidonghua, Vol 49, Iss 9, Pp 140-146 (2023)
The scraper conveyor chain transmission system is prone to frequent faults due to its complex load bearing capacity. However, traditional fault diagnosis requires a large amount of prior knowledge and subjective intervention, which requires high tech
Externí odkaz:
https://doaj.org/article/d39d860e7703440b91bb9fbbe087b572
Publikováno v:
Gong-kuang zidonghua, Vol 49, Iss 2, Pp 31-37 (2023)
The straightness problem is one of the neck problems in the intelligent construction of the fully mechanized working face. The key to solve this problem is to obtain the position and posture of the scraper conveyor or hydraulic support group. At pres
Externí odkaz:
https://doaj.org/article/e8d9a9ab4e0142e2966e7228995e6466
Autor:
Zhao Junjie, Chai Nianyao, Chen Xiangyu, Yue Yunfan, Cheng Yi-Bing, Qiu Jianrong, Wang Xuewen
Publikováno v:
Nanophotonics, Vol 11, Iss 5, Pp 987-993 (2022)
Perovskite solar cells (PSC) offer a promising solution for building integrated photovoltaics (BIPVs) due to its high photoelectric conversion efficiency (PCE). However, increasing the transparency of their functional layers dramatically decreases th
Externí odkaz:
https://doaj.org/article/db8b1f56783c4354922ae8658b8baa64
Publikováno v:
Gong-kuang zidonghua, Vol 45, Iss 1, Pp 95-99 (2019)
In view of problems of low efficiency, poor accuracy and difficulty in reusing and sharing diagnostic knowledge of traditional fault diagnosis methods of mine hoist, a fault diagnosis method for mine hoist spindle system based on ontology was propose
Externí odkaz:
https://doaj.org/article/f32600a25af4476dad4134e92a9d2730
Publikováno v:
Gong-kuang zidonghua, Vol 44, Iss 8, Pp 52-57 (2018)
Aiming at problem of inaccurate measurement results of existing horizontal shape detection methods for scraper conveyor, a horizontal shape detection method for scraper conveyor was proposed which was based on cooperative position and attitude calcul
Externí odkaz:
https://doaj.org/article/6788fb3105834386a28657678f502900
Publikováno v:
Nanophotonics, Vol 7, Iss 9, Pp 1533-1556 (2018)
This article reviews recent progress leading to the generation of optical vortex beams. After introducing the basics of optical vortex beams and their promising applications, we summarized different approaches for optical vortex generation by discret
Externí odkaz:
https://doaj.org/article/f350bc5bda5e435ab4e3c205c1123a19
Publikováno v:
Gong-kuang zidonghua, Vol 43, Iss 10, Pp 83-89 (2017)
For problems of inaccurate shearer position and attitude adjustment, a shearer position and attitude adjustment method based on strapdown inertial navigation system was researched on the ground with slowly varied angle. Firstly, shearer position tech
Externí odkaz:
https://doaj.org/article/d218e8c3325a4a90892fc97671518488
Publikováno v:
Gong-kuang zidonghua, Vol 43, Iss 8, Pp 11-14 (2017)
Existing hydraulic support monitoring methods can only monitor single support without fusion analysis of monitoring data of united hydraulic supports and have low utilization ratio of monitoring data. For above problems, a memory attitude monitoring
Externí odkaz:
https://doaj.org/article/a6846b8ca21f46b2a647c29e664986e8