Zobrazeno 1 - 10
of 1 741
pro vyhledávání: '"Zhang XiaoGuang"'
Publikováno v:
Guoji Yanke Zazhi, Vol 24, Iss 11, Pp 1831-1835 (2024)
AIM: To investigate the factors influencing non-response to intravitreal injection of anti-vascular endothelial growth factor(VEGF)therapy in fundus vascular diseases in a real-world setting.METHODS: A retrospective analysis was conducted on 160 pati
Externí odkaz:
https://doaj.org/article/3cce570e4e5f43098d465d01a48d2bd7
Publikováno v:
Open Medicine, Vol 17, Iss 1, Pp 1664-1673 (2022)
Lumbar plexus block is often used as analgesia for adult hip surgery, but it is rarely used in pediatric patients. This study aimed to compare the efficacy and feasibility of ultrasound-guided lumbar plexus block versus transversus abdominis plane bl
Externí odkaz:
https://doaj.org/article/a051f651bf5a438d8d139f6104ed9f3f
Publikováno v:
E3S Web of Conferences, Vol 573, p 02015 (2024)
With the continuous exploitation of mining resources, the grade of selected ores gradually decreases, and the cost of crushing, grinding, and beneficiation gradually increases. The pre selection and waste disposal of crushed products can improve the
Externí odkaz:
https://doaj.org/article/5664d705c09140b78dcedb88544eed01
Publikováno v:
E3S Web of Conferences, Vol 520, p 03003 (2024)
Carbon-bearing gold ore is one of the important refractory gold resources, which can not be effectively utilized by conventional treatment methods. In this paper, the main reasons for the difficult treatment of carbon-containing gold ore, the materia
Externí odkaz:
https://doaj.org/article/0f5edd92f32f41fe811d0ddf04351079
Publikováno v:
Gong-kuang zidonghua, Vol 47, Iss 10, Pp 54-61 (2021)
Industrial impulse noise in mining and other scenes can lead to burst data errors in wireless communication systems, significantly reducing data transmission reliability and communication quality. Most of the existing anti-impulse noise studies can o
Externí odkaz:
https://doaj.org/article/e65b079de60b42ab910f8b75f7709e5d
Publikováno v:
Gong-kuang zidonghua, Vol 47, Iss 10, Pp 121-126 (2021)
The coal preparation plant has a complex environment, a large monitoring area, a large number of monitoring points, and the points are scattered. The manual fixed-point timing sampling method of environmental parameters has poor real-time performance
Externí odkaz:
https://doaj.org/article/1266061487e642b9b235e791286476fd
Publikováno v:
Gong-kuang zidonghua, Vol 46, Iss 10, Pp 55-60 (2020)
In view of 'information island' problem which is common in coal mines, a smart mine information interaction method based on resource model and constrained application protocol (CoAP) was proposed from practical point of view. Two key issues to be sol
Externí odkaz:
https://doaj.org/article/c2c09ce7e6e94cf891f104c8817153d0
Publikováno v:
Gong-kuang zidonghua, Vol 46, Iss 7, Pp 82-88 (2020)
Due to complicated underground environment, traditional active location technologies make it inconvenient for workers to carry tags or lose tags during operation, which are limited in application of underground target location, while existing passive
Externí odkaz:
https://doaj.org/article/ffa37a2dfeca42e59b18139300ea0569
Publikováno v:
E3S Web of Conferences, Vol 406, p 02041 (2023)
The processing capacity of a gold concentrator in Shandong mine is 10000 t/d, and the production process of one-stage grinding + one roughing, two sweeping and one finishing is adopted. The grinding fineness is 50%-55% of -200 mesh content, the flota
Externí odkaz:
https://doaj.org/article/186ed58d6e1c4e9da836dfdc0565f1bd
Autor:
Qin Guanglin, Zhang Xiaoguang
Publikováno v:
SHS Web of Conferences, Vol 163, p 03006 (2023)
With the mining of gold mines, the gold level is gradually reduced, and the transportation cost of gold concentrate is gradually increased. This study analyzes the relationship between the analysis of different concentrate grades and transportation c
Externí odkaz:
https://doaj.org/article/4bee302ce7774f289b3517249201ab5c