Results 81 to 90 of about 225,989 (345)

Criteria for establishing shielding of multi-detector computed tomography (MDCT) rooms [PDF]

, 2017
The aim of this work is to compare two methods used for determining the proper shielding of computed tomography (CT) rooms while considering recent technological advances in CT scanners.
Aroua, A., Baechler, S., Bochud, F. O., Schmidt, S., Trueb, P. R., Verdun, F. R.   +5 more
core  

Suppression of HD-cooling in protogalactic gas clouds by Lyman-Werner radiation

, 2010
It has been shown that HD molecules can form efficiently in metal-free gas collapsing into massive protogalactic halos at high redshift. The resulting radiative cooling by HD can lower the gas temperature to that of the cosmic microwave background, T_CMB=
Abel, Abgrall, Abgrall, Abgrall, Abgrall, Abgrall, Biermann, Birnboim, Bromm, Bromm, Bromm, Clark, Dabrowski, Dalgarno, Dijkstra, Dijkstra, Draine, Fernandez, Galli, Galli, Glover, Glover, Glover, Glover, Glover, Glover, Haiman, Haiman, Haiman, Haiman, Hansen, Heger, J. Wolcott-Green, Jasche, Johnson, Johnson, Kirkman, Komatsu, Kreckel, Kuhlen, Lipovka, Machida, McGreer, Nagakura, Nakamura, O'Meara, Oh, Oh, Omukai, Omukai, Ripamonti, Ripamonti, Savin, Savin, Schaerer, Shang, Shapiro, Shchekinov, Shchekinov, Stacy, Stasielak, Stenrup, Susa, Tan, Tumlinson, Uehara, Vasiliev, Whalen, Yoshida, Yoshida, Yoshida, Z. Haiman   +71 more
core   +1 more source

Understanding the Factors and Consequences of Gas Deflagration Accident in Metro Shield Tunnel: Site Investigation and Numerical Analysis [PDF]

, 2023
Yi Shen, Shuangchi Sun, Sun We, Long Zhou, Zhongkai Huang   +4 more
openalex   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

Advanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham, Chenyu Wen, Mohammad Hadi Khaksaran, Won‐Yong Lee, Javier Cruz, Klas Hjort, Dongping Wu, Shi‐Li Zhang   +7 more
wiley   +1 more source

Optimization Analysis of Electric Field Shielding in Multi-Target Areas Using Transmission Lines Based on AHP-Improved PSO [PDF]

Journal of Electromagnetic Engineering and Science
To address the optimization problem of electric field intensity in multi-target areas under transmission lines, this work suggests combining the enhanced improved particle swarm optimization (IPSO) with the analytical hierarchy process (AHP).
Haiyang Zhang, Lirong Xie, Yufeng Wang, Enzhong Gong, Yong Wang, Zhan Yu, Liantao Shi, Zhengguo Li   +7 more
doaj   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Circular-ring tied arc loaded excellent metamaterial absorber for EMI shielding of Wi-Fi signal and impurity sensing of cooking oil

Engineering Science and Technology, an International Journal
This paper demonstrates a unique symmetric structure excellent metamaterial absorber (MMA) loaded with circular-ring tied arcs. The FR4 substrate-based MMA can accomplish 98.88 % and 99.81 % absorption maximums at the Wi-Fi and 5G frequencies of 2.4 GHz ...
Abdullah Al Mahfazur Rahman, Mohammad Tariqul Islam, Md. Moniruzzaman, Mandeep Singh, Abdulwadoud A. Maash, Haitham Alsaif, Mohamed S. Soliman   +6 more
doaj   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 more
wiley   +1 more source

Role of immobilization of irradiated rats in the protective effect of bone marrow shielding [PDF]

Rats were exposed to X-radiation to study the influence of immobilization and shielding of part of bone marrow during exposure on survival. It is concluded that (1) the beneficial effect of the stress factor (created by the immobilization of rats during ...
Gronskaya, N. F., Strelin, G. S.
core   +1 more source

A large-scale magnetic shield with 10^6 damping at mHz frequencies

, 2015
We present a magnetically shielded environment with a damping factor larger than one million at the mHz frequency regime and an extremely low field and gradient over an extended volume.
Altarev, I., Bales, M., Beck, D. H., Chupp, T., Fierlinger, K., Fierlinger, P., Kuchler, F., Lins, T., Marino, M. G., Niessen, B., Petzoldt, G., Schläpfer, U., Schnabel, A., Singh, J. T., Stoepler, R., Strum, M., Stuiber, S., Taubenheim, B., Voigt, J.   +18 more
core   +1 more source