Results 1 to 10 of about 34,237 (263)
Investigation of rolling bearing lubrication condition
Diagnostyka, 2021 The research aimed to assess the lubrication condition of rolling bearings dismounted from previously operated passenger car alternators. The tests measured the vibrations and evaluated the technical condition of the bearings based on selected estimators
Andrzej Jałowiecki +2 more
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International Journal of Prognostics and Health Management, 2021 In order to reduce operating costs and increase the operational stability, the aviation industry is continuously introducing digital technologies to automate the state detection of their assets and derive maintenance decisions.
Robert Meissner, Hendrik Meyer Kai Wicke
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Hydrogen sulfide occurrence states in China's coal seams
Energy Exploration & Exploitation, 2022 The occurrence states of hydrogen sulfide in coal seams are crucial in preventing and controlling hydrogen sulfide emission in coal mines and the safe development of coal bed methane.
Shengbo Yang +7 more
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Meitan kexue jishu, 2023 CBM well pattern optimization design and deployment is a key part of CBM development plan formulation. Reasonable well pattern deployment can not only optimize CBM production, but also reduce CBM development costs and improve economic benefits.
Zan HUANG +8 more
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Optimization and application of hydraulic injection segmental fracturing process in Mabidong Block
Meikuang Anquan, 2021 Due to the large buried depth, high stress and relatively complex coal structure in Mabidong block, about 35% of horizontal wells have problems such as difficult fracturing, high construction pressure and sand plugging during the stage fracturing ...
LI Zongyuan, NI Xiaoming, SHI Yanxia, HUO Lifen, LI Jiafeng, ZHANG Shaoyong
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Analysis of Productivity Characteristics of Coalbed Methane Based on 3D Geological Modeling
Meikuang Anquan, 2020 Using the geological modeling software, based on the production data of 138 CBM wells in No.3 coal seam of western Sihe minefield from 2007 to 2017, the production capacity of the study area can be divided into three zones: A, B and C.
LI Yong, JIANG Zaibing, LIU Yuhui
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Vibration Analysis Based on HJ-Biplots
International Journal of Prognostics and Health Management, 2018 Vibration Analysis (VA) is now routinely used for condition monitoring and failure diagnosis in Condition Based Maintenance (CBM). In the context of VA, a methodology is proposed, based on biplots, to simultaneously display both vibration frequencies and
Valter Vairinhos +4 more
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Frontiers in Earth Science, 2022 Although the southern Qinshui Basin is the most successful area for coalbed methane (CBM) development in China, the production of CBM wells in different blocks in the area is significantly different.
Changjiang Ji +9 more
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Shoots formation from gynosinesis Cucumis sativus l.
Ho Chi Minh City Open University Journal of Science - Engineering and Technology, 2018 Haploid plants achieve through androgenesis or gynogenesis. In gynogenesis method, the ovary or ovule are used as explants induct haploid plants. Female flower one day before flowering of Cucumis sativus L. are collected.
Le Thi Kim Ngoc, Nguyen Tran Dong Phuong
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Current Directions in Biomedical Engineering, 2020 Automatic tendencies to approach addictionrelated stimuli have been linked to the development and maintenance of harmful drug use behavior. Recent studies have shown that these automatic approaches can be directly addressed and modified by cognitive bias
Eiler Tanja Joan +8 more
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