Zobrazeno 1 - 10
of 1 402
pro vyhledávání: '"Air leakage"'
Publikováno v:
Journal of Cardiothoracic Surgery, Vol 19, Iss 1, Pp 1-9 (2024)
Abstract Objective To explore the value of our protocol of respiratory endoscopy intervention in the treatment of refractory persistent air leakage(PAL) after pulmonary surgery. Method A retrospective study was conducted in 12 patients with PAL after
Externí odkaz:
https://doaj.org/article/f348284e5ff24921add8171e374d624e
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 10, Pp 4441-4452 (2024)
Abstract In this study, a new method is proposed to quantitatively determine the extraction of boreholes under the effect of time. The main purpose of this method is to divide the gas drilling holes in the monitoring time into two stages: the early s
Externí odkaz:
https://doaj.org/article/666e2f5242a64ac59c4c50d27189ab78
Publikováno v:
Meikuang Anquan, Vol 55, Iss 9, Pp 209-216 (2024)
The sealing quality of gas extraction boreholes can directly affect the extraction efficiency. In order to effectively guarantee the sealing quality of gas extraction boreholes, the possible air leakage crack and its controllability after the sealing
Externí odkaz:
https://doaj.org/article/1133d6b9796d443798a47988c622e2c0
Autor:
Bingbing HE, Qingxiang WANG, Yayou XU, Yongning YU, Yingbing YANG, Chengmao HE, Chicheng MA, Chao XU, Jianglong WANG, Long LI, Xiaolin SONG
Publikováno v:
Meikuang Anquan, Vol 55, Iss 9, Pp 40-47 (2024)
To effectively control the hidden danger of coal spontaneous combustion caused by air leakage in shallow buried coal seam in Shendong Mining Area, taking the upper and lower coal seams of Huojitu Well 12 in Daliuta Coal Mine as the research object, t
Externí odkaz:
https://doaj.org/article/dbdf43f7930347d5835d4bd521c77f85
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 8, Pp 83-95 (2024)
Spray air leakage plugging is one of the effective means to prevent coal spontaneous combustion. Aiming at the drawbacks of high brittleness, easy cracking, and poor air leakage plugging effectiveness of traditional cement-based spraying air plugging
Externí odkaz:
https://doaj.org/article/353dd426b2f64c728e9398a98cb27c0f
Publikováno v:
BMC Infectious Diseases, Vol 24, Iss 1, Pp 1-6 (2024)
Abstract Background With the prevalence of coronavirus disease 2019 (COVID-19), many severe cases have been discovered worldwide. Here, a case of concurrent pneumomediastinum, pneumoretroperitoneum, and intestinal perforation was reported. This case
Externí odkaz:
https://doaj.org/article/8f68a2a4df3a4407aa8b56f5b15ebdbf
Autor:
Jinyang Li, Zhian Huang, Rongxia Yu, Hao Ding, Qianming Liu, Jiaze Ren, Ye Xu, Yinghua Zhang, Pengfei Wang
Publikováno v:
Case Studies in Thermal Engineering, Vol 63, Iss , Pp 105270- (2024)
Coal spontaneous combustion (CSC) has consistently been a serious safety and environmental concern in the coal industry. A nano-reinforced environmentally friendly composite gel was prepared in this study for air-leakage plugging and CSC prevention.
Externí odkaz:
https://doaj.org/article/90554b7e10594870b18fb7c4af68d43d
Autor:
Yingbing YANG, Qingxiang WANG, Xiaolin SONG, Chengmao HE, Ran XU, Mingyun TANG, Guangxiong WANG, Bingbing HE, Minghao CHEN
Publikováno v:
Meikuang Anquan, Vol 55, Iss 6, Pp 66-75 (2024)
The mining of shallow coal seams in Shendong Mining Area has resulted in well-developed surface fractures and complex three-dimensional air leakage. In order to study the distribution characteristics and dynamic evolution laws of surface fractures in
Externí odkaz:
https://doaj.org/article/41fdc19683844ea0a9bec524c914041f
Autor:
Lintao Fan, Liangliang Tao, Shuqi Duan, Mingrui Luo, Chuan He, Yanhua Zeng, Yongliang Chen, Yin Song, Zhanfeng Qi
Publikováno v:
Case Studies in Thermal Engineering, Vol 61, Iss , Pp 105102- (2024)
Mechanical ventilation is the primary measure for cooling during construction of high geo-temperature tunnel. Based on heat transfer theory and characteristics of press-in ventilation, a comprehensive calculation model considering the influence of co
Externí odkaz:
https://doaj.org/article/e4bde857b75843f2b5fea6f1159a9dde
Autor:
Noel Cochon, Russell Richman
Publikováno v:
Case Studies in Construction Materials, Vol 20, Iss , Pp e02748- (2024)
This study aims to contribute to limited research evidence for evaluating air leakage through Canadian manufactured CLT, by initiating research to characterize and quantify air leakage paths across CLT panels and evaluate the impact of additional air
Externí odkaz:
https://doaj.org/article/368ebf44fe104137bc9fe75c9e35ca45