Results 31 to 40 of about 5,513,522 (257)

Architecture and key technologies of intelligent mine ventilation system

Gong-kuang zidonghua
Existing studies on intelligent mine ventilation still show deficiencies in accurate perception of key parameters, coupled processing of multi-source information, and coordinated regulation, and have not yet formed an integrated technical system, which ...
XU Xuezhan, ZOU Yunlong
doaj   +1 more source

A new algorithm for calculating ventilation network reliability based on truncation error theory and network simplification

Procedia Earth and Planetary Science, 2009
AbstractStudy of reliability algorithms for large-scale and complicated ventilation networks is one of the hotspot research areas in this field both at home and abroad. At present, there is too much operand caused by combination explosion in determining ventilation network reliability; computing network reliability by using disjoint principle is one of
Jia, Jin-zhang, Zang, Guang-wei, Qian, Zhou, Xiao, Feng   +3 more
openaire   +1 more source

Research on intelligent air volume regulation in mines

Gong-kuang zidonghua, 2021
At present, most researches on mine air volume regulation are single-branch regulation, which cannot meet the requirement of large air volume of a specific wind branch.
WU Xinzhong1, ZHANG Zhichao, XU Jialin1, WANG Kai2   +3 more
doaj   +1 more source

Controlling Fire of Belt Conveyor and Ventilation Network Calculation in Underground Coal mines

IOP Conference Series: Earth and Environmental Science, 2018
Belt conveyor has played an essential role in underground coal transportation. However, due to long-distance transport, it facilely confused ventilation system. Furthermore, once belt fires occurred, the accident would be spread to other areas rapidly. Numerous toxic and harmful flue gases would flow along the roadway, which posed a significant threat ...
Yang Xiao, Longgang Chen, Xinyue Zhang, Shuaijing Ren, Dajiang Li   +4 more
openaire   +1 more source

Quadratic programming model for calibration of mine ventilation network under limited measured air quantities

Meitan kexue jishu
A calibration model for mine ventilation network based on optimization theory was established to address the issue of manual repeated adjustment of air resistance and low consistency between simulated and measured results when using ventilation network ...
Fengliang WU, Tong WANG
doaj   +1 more source

Extraction and resource utilization of heat and humidity in mine ventilation

工程科学学报, 2022
Massive low-grade thermal energy and water vapor are stored in the hot and humid airflow of mines, typically resulting in a poor underground working environment and posing threats to worker safety and health. The direct discharge of exhausted ventilation
Fu-bao ZHOU, Rong-ting HUANG, Hai-hui XIN, Cong-guang JIAN   +3 more
doaj   +1 more source

Epigenetic silencing of the liver‐specific lncRNA LUNAR promotes liver cancer progression via NOTCH activation

Molecular Oncology, EarlyView.
LUNAR is a liver‐specific long noncoding RNA (lncRNA) that is highly expressed in normal liver but becomes epigenetically silenced in hepatocellular carcinoma through promoter hypermethylation. Loss of LUNAR is associated with NOTCH activation, epithelial–mesenchymal transition, and metastasis, whereas restoring LUNAR restrains metastatic progression ...
Se Ha Jang, Hyung Seok Kim, Geum Ok Baek, Moon Gyeong Yoon, Su In Lee, Jee‐Yeong Jeong, Ji Eun Han, Soon Sun Kim, Jae Youn Cheong, Jung Woo Eun   +9 more
wiley   +1 more source

Optimizing Mine Ventilation Systems: An Advanced Mixed-Integer Linear Programming Model

Mathematics
In the underground mine ventilation area, the absence of robust solutions for nonlinear programming models has impeded progress for decades. To overcome the enduring difficulty of solving nonlinear optimization models for mine ventilation optimization, a
Deyun Zhong, Lixue Wen, Yulong Liu, Zhaohao Wu, Liguan Wang   +4 more
doaj   +1 more source

Fluid-thermal characteristics of high-voltage line-start permanent magnet synchronous motor based on bidirectional hydraulic-thermal network coupling

Engineering Science and Technology, an International Journal, 2023
This paper concerns the fluid-thermal characteristics of a high-voltage line-start permanent magnet synchronous motor (LSPMSM). A bidirectional hydraulic-thermal network coupling methodology is proposed and applied to the fluid-thermal characteristics ...
Yongming Xu, Ziyi Xu, Yang Meng, Yaodong Wang   +3 more
doaj   +1 more source

IGF2 knockout reduces but does not abolish osteosarcoma growth in vitro and in vivo

FEBS Open Bio, EarlyView.
To test whether endogenous IGF2 promotes osteosarcoma growth, IGF2 was knocked out in Saos2 cells via CRISPR‐Cas9. KO cells showed reduced proliferation in vitro, and knockout xenografts in mice reached only ~25% of wild‐type tumor volume. Insulin‐like growth factor 2 (IGF2) is implicated in osteosarcoma, but direct functional evidence of its role is ...
Shun Yao, Marco Archetti
wiley   +1 more source