Results 21 to 30 of about 2,773,837 (278)

A computational fluid dynamic analysis of the effect of side draughts and nozzle diameter on shielding gas coverage during gas metal arc welding [PDF]

open access: yes, 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

An attenuation Layer for Electromagnetic Shielding in X- Band Frequency [PDF]

open access: yesIranian Journal of Health, Safety and Environment, 2015
Uncontrolled exposure to X-band frequency leads to health damage. One of the principles of radiation protection is shielding. But, conventional shielding materials have disadvantages.
Vida Zaroushani   +2 more
doaj   +2 more sources

Characterization of the Electromagnetic Shielding Effectiveness of Biochar-Based Materials

open access: yesIEEE Access, 2023
Biochar and biochar-based composites are multi-functional materials with a wide range of environmental and other applications. A new and emerging application is in the field of modern communication systems as materials with significant electromagnetic ...
Christos D. Nikolopoulos   +5 more
doaj   +1 more source

Shielding effects of body - shields for 3D PET.

open access: yesIgaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics, 2002
We analyzed basic physics characteristics of body-shields which have been considered for screening out radioactivity outside the field of view (OFOV) in positron emission tomography (PET). Phantom experiments were performed with simple rectangular body-shields.
Hasegawa, Tomoyuki   +4 more
openaire   +2 more sources

Shielding Effectiveness of Liquid Electrolyte [PDF]

open access: yes2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall), 2019
The paper aims at the investigation of a liquid electrolyte effect on electromagnetic radiation. The liquid electrolyte could represent an interesting solution against electromagnetic interference for devices using transparent covers, such as security cameras.
Kovář, Stanislav   +3 more
openaire   +2 more sources

Temperature Dependencies of the Permittivities and Microwave Shielding Effectiveness of a Carbon-containing Electrically Conductive Concrete

open access: yesHigh Temperature Materials and Processes, 2013
Conductive concrete is a construction material that can be utilized for a number of applications: in particular, electromagnetic shielding. In this research, the microwave shielding effectiveness of a carbon containing electrically conductive concrete ...
Chambers B.   +2 more
doaj   +1 more source

The electromagnetic shielding effectiveness of the copper plated nonwoven fabric and its’ related comfort properties

open access: yesJournal of Engineered Fibers and Fabrics, 2022
With the rapid development of modern science and technology, a kind of invisible pollution named electromagnetic radiation has increasingly attracted the attention of all sectors of society.
Dan Wang   +3 more
doaj   +1 more source

Analysis of Shielding Effectiveness of a Cavity with Internal Dielectric Plate and Apertures

open access: yesApplied Sciences
Focusing on the shielding effectiveness of a single-layer shielded cavity, especially the impact of aperture shape, aperture quantity, internal dielectric plate, and other factors on shielding effectiveness, an equivalent circuit model and BLT equation ...
Laigong Guo   +4 more
doaj   +1 more source

Numerical Models for the Study of Electromagnetic Shielding [PDF]

open access: yesJournal of Electrical and Electronics Engineering, 2012
The paper presents 2D and 3D models for the study of electromagnetic shielding of a coil. The magnetic fields are computed for defining the shielding effectiveness.
POPA Monica
doaj  

Analysis of electromagnetic shielding effectiveness of metal shell of mine-used products

open access: yesGong-kuang zidonghua, 2014
The paper analyzed and calculated electromagnetic shielding effectiveness of mine-used products with shell of single layer stainless steel, got conclusion that electromagnetic shielding effectiveness of metal shell was related to metal material and ...
SHI Faqiang
doaj   +1 more source

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