Zobrazeno 1 - 10
of 74
pro vyhledávání: '"drilling depth"'
Autor:
CUI Guangxu, ZHU Wendong, LI Erzhen, MIAO Junxia, LI Jianzhong, LI Wei, LI Xiaobin, WAN Shuqin
Publikováno v:
Guan'gai paishui xuebao, Vol 41, Iss 3, Pp 10-16 (2022)
【Objective】 Crops grown in saline-alkali soil are vulnerable to salinity during its germination and seedling stages, and the seed drilling depth hence has a significant impact on plant establishment. Taking sunflower as an example, this paper exp
Externí odkaz:
https://doaj.org/article/ac9a61de573e4aadbd9a512cf48dc8d5
Autor:
WANG Xiaolong, ZHANG Jun
Publikováno v:
Meikuang Anquan, Vol 52, Iss 10, Pp 130-135 (2021)
In view of the problems of single function, non intuitive display and unable to guide drilling construction of trajectory while drilling and hand-held trajectory measurement software for rotary drilling in coal mine, the drilling data processing soft
Externí odkaz:
https://doaj.org/article/5a684928dddf4d4984b9c4f99b52fa6f
Publikováno v:
Meikuang Anquan, Vol 52, Iss 7, Pp 112-115 (2021)
The online monitoring system of coal mine borehole group is designed, and the drilling group data processing software based on full data analysis method is developed. The on-line monitoring system of the mine drilling group uses the trajectory while
Externí odkaz:
https://doaj.org/article/eaa743c95f9a422bb688b306d682b187
Publikováno v:
Gong-kuang zidonghua, Vol 46, Iss 10, Pp 32-37. (2020)
In view of problems that the existing underground drill pipe quantity statistics method has low accuracy and is easily affected by environmental changes,an underground drill pipe counting method based on improved ResNet network was proposed combining
Externí odkaz:
https://doaj.org/article/802c2bee3fc2447f90f2459b98b85bfd
Publikováno v:
Journal of Orthopaedic Surgery and Research, Vol 14, Iss 1, Pp 1-5 (2019)
Abstract Background This study was conducted to measure the effect of different drilling depths on compression forces generated by two commonly used headless compression screws using the two different types of drill bit, the Acutrak® mini (conical t
Externí odkaz:
https://doaj.org/article/12f0568bff2b4ef4b781989f0faebac4
Publikováno v:
Sensors, Vol 22, Iss 9, p 3234 (2022)
An innovative monitoring-while-drilling method of pressure relief drilling was proposed in a previous study, and the periodic appearance of amplitude concentrated enlargement zone in vibration signals can represent the drilling depth. However, there
Externí odkaz:
https://doaj.org/article/b18c349290a44a53aeeeb4afb84bc134
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 9, Iss 5, Pp 989-992 (2017)
Deep drilling is becoming the direct and the most efficient means in exploiting deep mineral resources, facilitating to understanding the earthquake mechanism and performing other scientific researches on the Earth's crust. In order to understand the
Externí odkaz:
https://doaj.org/article/3240cc8032d444a0b793fabf7a3ac488
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