Results 81 to 90 of about 30,106 (301)

Schirmwirkung von Hochfrequenz (HF)-Schutzkleidung: Untersuchung verschiedener Konstruktionsmerkmale [PDF]

Advances in Radio Science, 2005
Die Messverfahren zur Bestimmung der Schutzwirkung von HF-Schutzkleidung sind in der Norm DIN 32780-100 festgelegt. Entsprechend diesen Anforderungen wird die elektrische und magnetische Schirmdämpfung bestimmt und daraus als Maß für die Schutzwirkung ...
V. Arps, K. Scheibe
doaj  

Analytical Study on Electromagnetic Shielding Characteristics of Wire Mesh

Zhongguo dianli, 2019
Based on the surface impedance model of metal mesh and the full wave simulation software, in this article the applicable range of the formula for calculating the shielding effectiveness of metal mesh for plane wave is discussed.On this basis, when the ...
Yonghong WANG, Bing XIAO, Ri HE, Yifan HU, Chongqing JIAO, Keqiang XU   +5 more
doaj   +1 more source

Electromagnetic Shielding Effectiveness of Nickel Fiber-Reinforced Cement Composites

, 2017
The nickel fiber was added into the cement-based composite materials as a shielding medium. Influences of the three different types and amount of dispersants and weight fraction of nickel fiber on the electrical conductivity and electromagnetic shielding
Guo Xuan Xiong, Ying Yang, Wei Lin Yao
core   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Wideband Electromagnetic Shielding Using Wire-mesh-mounted Chiral Particle Array in Concrete Composite Materials [PDF]

Iranian Journal of Electrical and Electronic Engineering
This paper proposes a structure for concrete composite materials that effectively attenuates transmitted power through the composite slab across a wide frequency range.
Ayoub Hamidi, Ahmad Cheldavi, Asghar Habibnejad Korayem   +2 more
doaj  

A Multi-Stage Model for the Electromagnetic Shielding Effectiveness Prediction of an Infinite Conductor Plane With Periodic Apertures

IEEE Access, 2019
This paper focuses on the shielding effectiveness (SE) prediction of the periodic aperture array on an infinite conductor plane against a plane electromagnetic wave with its wavelength much larger than the size of a unit cell of the array.
Wanxin Bai, Anqi Guo, Tianle Li, Ruiqi Cheng, Chongqing Jiao   +4 more
doaj   +1 more source

Role of Intrinsic Electron Trapping in Negative Charging of Amorphous Alumina

Advanced Functional Materials, EarlyView.
Intrinsic electron trapping in amorphous Al2O3 is examined using hybrid‐DFT models spanning a wide density range. Both spontaneous and thermally activated trapping are identified, with pronounced spontaneous localization in dense, partly crystallized structures.
Jack W. Strand, Kaja H. Hiorth, David Gao, Valeri Afanas'ev, Jaakko Akola, Alexander L. Shluger   +5 more
wiley   +1 more source

Evaluation of Absorbing Material Shielding Effectiveness Using a Baum–Liu–Tesche Based Method

Measurement Science Review
The shielding efficacy of the metal cavity can be effectively enhanced using absorbing materials coated on the inner wall of the cavity. With highly potential materials such as graphene, silicon carbide (SiC), polytetrafluoroethylene (PTFE), and Ni/rGO ...
Dou Chunmei, Wang Rumeng, Lin Hsiung-Cheng, Zhang Yan, Chai Jiayi   +4 more
doaj   +1 more source

Strain‐Programmable Luminescent Adhesive Patch With Tartrazine‐Mediated Optical Skin Clearing for Photochemical Tissue Bonding

Advanced Functional Materials, EarlyView.
We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim, Kyungjoo Jo, Kwanghyeon Park, Jun Hee Kim, Jong Hyeong Cho, Inhoo Choi, Sei Kwang Hahn   +6 more
wiley   +1 more source

Improvement of electromagnetic shielding effectiveness for radar frequencies using dispersion factor

Salāmat-i kār-i Īrān, 2016
Background and aims: X-band with 8-12.5 frequencies range has various applications such as air control traffic, navy communication and etc. Uncontrolled exposure with microwave can lead to adverse effect on workers.
V Zaroushani, A Khavanin, SB Mortazavi, A Jnonidi Jafari   +3 more
doaj