Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Yankun MA"'
Autor:
Shouqing Lu, Jiang Shi, Lei Jiao, Yankun Ma, Wei Li, Zhanyou Sa, Jie Liu, Taibiao Bei, Shengcheng Wang
Publikováno v:
International Journal of Coal Science & Technology, Vol 11, Iss 1, Pp 1-30 (2024)
Abstract Coal bed methane (CBM), the high-quality and efficient fuel, has caught the interest of many nations as they strive for environmentally friendly development. Therefore, the efficient exploitation and utilization of CBM has become one of the
Externí odkaz:
https://doaj.org/article/7093ce0b8a28475cb00cb0f69c494cb3
Publikováno v:
Meitan xuebao, Vol 49, Iss 4, Pp 1882-1893 (2024)
Frequent mining disturbance or periodic rupture of far-field roof in coal seam mining will produce multiple vibration loads, which have an important influence on the micro pore-fissure structure and macro mechanical behavior of coal. In order to expl
Externí odkaz:
https://doaj.org/article/9bdac53008894b6087b8ed0813bae594
Publikováno v:
BMC Psychology, Vol 12, Iss 1, Pp 1-11 (2024)
Abstract Background Some studies have examined the relationship between internalization of media appearance ideals and eating disorders. However, few have discussed the relationship between eating disorder tendencies. To fill this research gap, this
Externí odkaz:
https://doaj.org/article/9b42b3dec40047d8803d44ff92c0709a
Autor:
Jun WU, Yankun MA, Tong ZHANG, Yang LIU, Xin YANG, Junlin MAO, Min ZHU, Guoliang ZHOU, Zhizheng XIE, Mingchao WANG
Publikováno v:
Meikuang Anquan, Vol 55, Iss 2, Pp 159-166 (2024)
Aiming at the problem that coal seam development disturbs the stability of oil and gas trap layer and oil and gas shaft in the coordinated exploitation of coal and oil and gas, two-dimensional simulation test was used to carry out the research on the
Externí odkaz:
https://doaj.org/article/a1ab3d106079462eaa01c1e94d685d50
Publikováno v:
Frontiers in Psychology, Vol 15 (2024)
It has been reported that parental phubbing is a significant predictor of mobile phone addiction (MPA) among adolescents. However, the mechanisms underlying this association remain largely unclarified. On the basis of the social learning theories and
Externí odkaz:
https://doaj.org/article/0e1b3ac245804f3d96dc6bd5151c69aa
Publikováno v:
International Journal of Coal Science & Technology, Vol 10, Iss 1, Pp 1-15 (2023)
Abstract The gas pressure in front area of heading face is essential to dynamically evaluate coal and gas outburst during coal mining. In this work, a novel inversion model of gas pressure in front area of the heading face was established on premise
Externí odkaz:
https://doaj.org/article/5ce2a7d74be248709314e6885e5c0bf2
Publikováno v:
Plants, Vol 13, Iss 10, p 1327 (2024)
Exogenous selenium application could effectively improve the selenium absorption of crops affected by different climatic conditions due to changes in the planting environment and planting conditions. We planted maize at planting densities of 67,500 p
Externí odkaz:
https://doaj.org/article/d6d139d9917940e094af9cd178ec145f
Publikováno v:
Meitan xuebao, Vol 48, Iss 5, Pp 1825-1845 (2023)
As shallow coal resources are gradually exhausted in China, the shift of coal mining from shallow to deep will become a new normal condition for ensuring the energy demand of China. Aiming at the problems of coal and gas outbursts, rockburst, and com
Externí odkaz:
https://doaj.org/article/ef72055be8d44beaa900d54c93ad7d44
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
In order to solve the problem of stress concentration on the roof of the mining trench, reduce the risk of sudden collapse of the roof overburden and disturbance, improve the control effect of the surrounding rock of the roof cutting and retaining ro
Externí odkaz:
https://doaj.org/article/edef55f9b1544c73aea9be1b42e96f7e
Publikováno v:
Frontiers in Psychology, Vol 14 (2023)
This study aimed to explore the relationship between gratitude and academic engagement in Chinese students. The students of some junior high schools in Guangzhou were surveyed using the Gratitude Questionnaire-6, the School Engagement Questionnaire,
Externí odkaz:
https://doaj.org/article/9e75c30453f24381a580c202b193bf36