Zobrazeno 1 - 10
of 1 286
pro vyhledávání: '"filling ratio"'
Publikováno v:
Meikuang Anquan, Vol 55, Iss 12, Pp 188-196 (2024)
In order to solve the problem that the backfill body can not be connected to the roof in the process of end slope filling mining in open pit coal mine and to investigate the influence of filling rate on the deformation and failure characteristics of
Externí odkaz:
https://doaj.org/article/6c17ada064d84eeea6c07968a072d7ea
Autor:
Mohammad Khalili, Seyed Alireza Mostafavi, Farzaneh Sadat Keshvari Tabatabaei, Hossein Moghadamrad
Publikováno v:
Heliyon, Vol 10, Iss 21, Pp e39778- (2024)
Two-phase closed thermosyphons (TPCTs) are highly efficient heat transfer devices that leverage natural convection to transport heat over substantial distances with minimal temperature gradients. This study investigates the thermal performance of a n
Externí odkaz:
https://doaj.org/article/a4dde38ee13c4862b106c763ce848b95
Publikováno v:
Applied Water Science, Vol 14, Iss 6, Pp 1-20 (2024)
Abstract The current paper evaluated experimentally an innovative sun tracking concentrated solar still under Egyptian climatic conditions during the summer of 2022. The proposed system consists of a 120-cm-diameter parabolic reflector mirror that tr
Externí odkaz:
https://doaj.org/article/d7cd3db5ad48444da3888938b2ef3921
Publikováno v:
Case Studies in Thermal Engineering, Vol 60, Iss , Pp 104755- (2024)
Similar to the layout of an oscillating heat pipe (OHP), a quartz hybrid heat pipe (HHP) with an inner diameter of 5 mm, exceeding 59.7 % of the capillary threshold of OHP, was designed. The detailed thermal hydraulic behavior of fluid in the HHP has
Externí odkaz:
https://doaj.org/article/57b96bdef4304db2b133462825186cc5
Publikováno v:
Case Studies in Construction Materials, Vol 20, Iss , Pp e03264- (2024)
The stability of backfill plays a crucial role in the process of mine operation. In this study, author combined indoor experiments, surface fitting, numerical simulation, and theoretical derivation to investigate how the filling times (FTs), cement t
Externí odkaz:
https://doaj.org/article/635fc18eea284213b01117b648acc33e
Autor:
Katsumasa Nakazawa, MD, Tomoya Manaka, MD, PhD, Yoshihiro Hirakawa, MD, PhD, Yoichi Ito, MD, PhD, Ryosuke Iio, MD, Naoki Oi, Hiroaki Nakamura, MD, PhD
Publikováno v:
JSES International, Vol 8, Iss 1, Pp 119-125 (2024)
Background: There are numerous reports of bone adaptation observed on plain radiography studies after the use of cementless short stems in reverse shoulder arthroplasty. However, reports on changes in bone mineral density (BMD) around the stem using
Externí odkaz:
https://doaj.org/article/053322378ca0467d8b55dd03d4556e55
Heat Transfer Mechanism Study of an Embedded Heat Pipe for New Energy Consumption System Enhancement
Publikováno v:
Energies, Vol 17, Iss 23, p 6162 (2024)
Aiming at the demand for new energy consumption and mobile portable heat storage, a gravity heat pipe with embedded structure was designed. In order to explore the two-phase heat transfer mechanism of the embedded heat pipe, CFD numerical simulation
Externí odkaz:
https://doaj.org/article/8057cd5336e242348cd97abb5557e52d
Publikováno v:
Frontiers in Endocrinology, Vol 15 (2024)
ObjectiveTo explore the appropriate bone cement filling ratio in percutaneous kyphoplasty (PKP) for the treatment of osteoporotic vertebral compression fractures (OVCF).MethodsClinical and radiological data from 150 OVCF patients treated with PKP wer
Externí odkaz:
https://doaj.org/article/34081926819541ff94b2bb8fa62793c8
Publikováno v:
矿业科学学报, Vol 8, Iss 6, Pp 838-846 (2023)
This study investigated the optimal ratio and mechanical properties of iron-based full tailing sand(IFT)and cement(P.O42.5R)as experimental materials, with the addition of the Ti-bearing Blast Furnace Slag(TBS), in full tailing sand cemented filling
Externí odkaz:
https://doaj.org/article/5ab93adff4d04369b4fe7671b7ccadac
Publikováno v:
Energy Reports, Vol 10, Iss , Pp 637-647 (2023)
The heat pipes are found as one of the promising technologies, which provide massive improvement of the energy performance in the energy systems. However, there are still some challenges in the employment of this technology in various applications, s
Externí odkaz:
https://doaj.org/article/c9cdb1957dbb4ddf87ce7a5040a7e7cd