نتایج جستجو برای: shielding materials

تعداد نتایج: 444083  

2010

Since 1941, Magnetic Shield Corporation has been a leading supplier of low frequency magnetic shielding and a leading source for technical solutions and rapid prototyping. For decades, engineers, designers, scientists, and researchers have relied upon Magnetic Shield Corporation’s expertise, raw materials and fabrication methods to bring their products, systems, facilities and equipment into co...

2016
Qi Sun Hongming He Wen-Yang Gao Briana Aguila Lukasz Wojtas Zhifeng Dai Jixue Li Yu-Sheng Chen Feng-Shou Xiao Shengqian Ma

The sophisticated control of surface wettability for target-specific applications has attracted widespread interest for use in a plethora of applications. Despite the recent advances in modification of non-porous materials, surface wettability control of porous materials, particularly single crystalline, remains undeveloped. Here we contribute a general method to impart amphiphobicity on single...

2012
Alan O. Burts Yongjun Li Aleksandr V. Zhukhovitskiy Paresma R. Patel Robert H. Grubbs M. Francesca Ottaviani Nicholas J. Turro Jeremiah A. Johnson

Attachment of poly(ethylene glycol) (PEG) to polymeric nanostructures is a general strategy for sterically shielding and imparting water solubility to hydrophobic payloads. In this report, we describe direct graft-through polymerization of branched, multifunctional macromonomers that possess a PEG domain and a hydrophobic nitroxide domain. Electron paramagnetic resonance (EPR) spectroscopy was ...

2003
G. Fehrenbacher F. Gutermuth T. Radon G. Shabratova M. Yuldasheva

Introduction Shielding calculations for the GSI future project [1] have been performed using the radiation transport code FLUKA [2, 3]. FLUKA is capable of simulating hadronic and electro-magnetic interactions of particles with matter. Here the task is to attenuate radiation generated inside experimental areas or accelerators to a dose rate not larger than 0.5μSv/h at outer walls and to estimat...

2009
Nobuyasu Adachi Masayuki Kuwahara Chee Kiong Sia Toshitaka Ota

Ba ferrite materials with porous microstructures were prepared from a natural cedar wood template in order to investigate new electromagnetic shielding materials. The wood templates were infiltrated with barium nitrate and iron nitrate solutions (molar ratio = 1:12) and dried to form ferrite gel, then, they were sintered in air at a temperature between 800 °C and 1400 °C. The 1-dimensional poro...

2010
R. Vafadari J. A. W. van Dommelen M. G. D. Geers N. B. Roozen

/department of mechanical engineering Introduction Noise reduction is a key issue for High-tech and high precision instruments. To reduce the noise levels emitted by internal or external sources, porous materials can be used for acoustic shielding. The acoustic wave penetrates into the pore network, and part of its energy is dissipated as heat by viscous friction and thermal-elastic damping, ma...

Journal: :Acta Metallurgica Sinica (english Letters) 2021

The radiation generated by nuclear reaction is harmful to human body and equipment, thus the shielding materials that employ ability from neutron gamma rays are best candidates according application situations sources. In this paper, researches of metal-based or multiple purpose systematically summarized, respective principal problems these with respect effectiveness other performances, such as...

1994
Myung-Hee Y. Kim John W. Wilson Sheila A. Thibeault John E. Nealy Francis F. Badavi

The use of trademarks or names of manufacturers in this report is for accurate reporting and does not constitute an ocial endorsement, either expressed or implied, of such products or manufacturers by the National Aeronautics and Space Administration. Summary The space program is faced with two dicult radiation protection issues for future long-term operations. First, retrot of shield material ...

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