Results 21 to 30 of about 4,233,108 (280)
Arc pressure and weld metal fluid flow whilst using alternating shielding gases Part 1 : arc pressure measurement [PDF]
, 2013 As part of an ongoing process to fully evaluate the effects of an alternating shielding gas supply on gas shielded welding processes, a comparison between the arc pressures generated using argon, helium, alternating shielding gases and pulsed GTAW has ...
Campbell, Stuart +2 more
core +4 more sources
A computational fluid dynamic analysis of the effect of side draughts and nozzle diameter on shielding gas coverage during gas metal arc welding [PDF]
, 2012 Extensive experimental trials were conducted, emulating the conditions modelled, in order to validate the computational fluid dynamic results. Final results demonstrated that a more constricted nozzle was more effective at creating a stable gas column ...
Campbell, Stuart +4 more
core +4 more sources
On Douglas-Shapiro-Shields factorizations
Filomat, 2020 In this note we consider the kernels of vectorial Hankel operators and examine a question which functions are admitted to canonical ?pseudo?-Douglas-Shapiro-Shields factorizations.
Gu, Caixing +2 more
openaire +3 more sources
African Scientific Reports, 2022 Over time x-ray department gains more patient throughput compared to when it was established, this may lead to changes in room usage, workload and occupancy factor. Therefore, it becomes imperative to re-evaluate the shielding adequacy of the facilities
Mohammed Sidi +5 more
doaj +1 more source
Factors Influencing the Performance of Porous Wind Shields [PDF]
Applied Mechanics and Materials, 2013 Porosity, porosity distribution, porous shape, porous size, thickness of shield, shield height &width, and shield orientation are the factors that influence the performance of porous wind shields. Among them, porosity is the most important factor in determining the performance of porous shields.
Xu, Yizhong +4 more
openaire +3 more sources
LOW-FREQUENCY MAGNETIC FIELD SHIELDING BY A CIRCULAR PASSIVE LOOP AND CLOSED SHELLS
Electrical engineering & Electromechanics, 2016 Purpose. To analyze the shielding factors for a circular passive loop and conductive closed shells placed in a homogeneous low-frequency magnetic field. Methodology. We have obtained simplified expressions for the shielding factors for a circular passive
V.S. Grinchenko +2 more
doaj +1 more source
Measurement Science Review, 2020 Although various measurement techniques have been applied to both qualitative and quantitative evaluation for the electromagnetic shielding performance of braided-shield power cables, the existing measurements cannot directly assess the low-frequency ...
Zhou Zhongyuan +5 more
doaj +1 more source
Energies, 2019 To enable the realization of ultra-low magnetic fields for scientific and technological research, magnetic shielding is required to create a space with low residual magnetic field and high shielding factors.
Yiyang Zhao +5 more
doaj +1 more source
Gamma ray attenuation behaviors and mechanism of boron rich slag/ epoxy resin shielding composites
Nuclear Engineering and Technology, 2023 Excellent thermal neutron absorption performance of boron expands the potential use of boron rich slag to prepare epoxy resin matrix nuclear shielding composites. However, shielding attenuation behaviors and mechanism of the composites against gamma rays
Mengge Dong +3 more
doaj +1 more source
Scientific Reports, 2022 Shielding from space radiation, especially galactic cosmic rays (GCRs), is a significant safety challenge for future human activities in deep space. In this study, the shielding performances of potential materials [aluminum (Al), polyethylene (PE), and ...
Masayuki Naito, Satoshi Kodaira
doaj +1 more source