Results 71 to 80 of about 18,064 (308)

On the location and structure of the artificial 630-nm airglow patch over Sura facility [PDF]

, 2007
International audienceResults are presented of the artificial optical emission of the atomic oxygen red line (the radiation of level O(1D) with a wavelength of 630 nm) from the HF-pumped ionosphere, obtained in September 2004 at the SURA heating facility
Atroshenko, M. A., Grach, S. M., Kotov, P. V., M. A. Atroshenko, Yashnov, V. A., Kosch, M. J., Sergeev, E. N., M. J. Kosch, S. M. Grach, P. V. Kotov, E. N. Sergeev, V. A. Yashnov   +11 more
core   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Determination of the vector velocity of artificial ionospheric irregularities based on Doppler measurements by the bi-static scatter method of HF radio signals propagating over long radio paths

Solar-Terrestrial Physics
During experiments on the modification of the high-latitude ionosphere by high-power HF radio waves of ordinary or extraordinary polarization of the EISCAT/Heating facility (Tromsø, Norway) in 2013, 2016, and 2019, Doppler measurements of diagnostic HF ...
Borisova T. D., Blagoveshchenskaya N. F., Kalishin A. S., Kovalev A. S.   +3 more
doaj   +1 more source

Cause and Amelioration of MRI-Induced Heating Through Medical Implant Lead Wires [PDF]

, 2014
The RF fields present in magnetic resonance imaging (MRI) scanners can induce hazardous heating in patients wearing medical implants. The inherent design and locale of deep brain stimulators (DBS) and spinal cord stimulators (SCS) make them particularly ...
Scott, Jonathan B., McCabe, Steven Owen
core  

Directional features of the downshifted peak observed in HF-induced stimulated electromagnetic emission spectra obtained using an interferometer [PDF]

, 2006
International audienceA high frequency (HF) ionospheric modification experiment was carried out between 25 September and 8 October 2004, using the EISCAT HF transmitter located near Tromsø, Norway.
Khudukon, B. Z., Rietveld, Michael T., Yurik, R.Yu, Brekke, A., M. Grill, A. Brekke, Tereshchenko, E., Khudukon, B., Rietveld, M., M. T. Rietveld, B. Isham, Belyey, Vasyl, Khudukon, B.Z., Tereshchenko, E.D., R. Yu. Yurik, T. Hagfors, Belyey, V., Isham, B., Hagfors, T., B. Z. Khudukon, Brekke, Asgeir, Rietveld, M. T., V. Belyey, Grill, M., Yurik, R. Yu., Yurik, R., Tereshchenko, E. D., E. D. Tereshchenko   +27 more
core   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

HF pump-induced electron heating and artificial airglow at high latitudes: Aspect angle dependence [PDF]

, 2002
Large electron temperature increases (~3000 K) in the ionospheric F-region, produced by powerful HF wave injection, were measured using the EISCAT incoherent scatter radar near Tromsø, Norway, on 7 October 1999.
Rietveld, M. T., Leyser, T. B., Kosch, M. J., Blagoveshchenskaya, N. F., Kornienko, V. A.   +4 more
core  

Encyclopedia of 2D β′‐In2Se3 Growth Using Chemical Vapor Deposition: The Effects of Synthesis Parameters Onto Material Quality

Advanced Engineering Materials, EarlyView.
A distinct semi‐confined inner‐tube chemical vapor deposition geometry enables reproducible, large‐area growth of phase‐pure 2D β′‐In2Se3 from InI + Se precursors. Engineering local vapor transport and optimizing precursor delivery and temperature–time conditions yield uniform continuous films.
Dasun P. W. Guruge, P. Sanju S. Panawala, Joseph F. S. Fernando, Zhenhuan Chen, Chao Zhang, Dong‐Chen Qi, Liangzhi Kou, Konstantin L. Firestein, Dmitri V. Golberg   +8 more
wiley   +1 more source

Effects of Different Treatments on Storage Stability and Flavor Characteristics of Wheat Germ

Shipin gongye ke-ji
In order to study the effects of different treatments on the storage stability and flavor characteristics of wheat germ, wheat germ after hot air treatment and radio frequency treatment was vacuum packed and stored at a temperature of 40 ℃ and a humidity
Zihan SHAO, Xun GONG, Yu SONG, Shu TAO, Ying HONG, Chao LIU, Jiaqi ZHU, Mingchun WANG, Lei CAO, Jinxia YE, Kaixuan MA   +10 more
doaj   +1 more source

Height triangulation of artificial optical emissions in the F-layer [PDF]

, 2005
Using the EISCAT high gain high frequency (HF) Heating facility located in northern Scandinavia (69.59deg N, 19.23deg E), HF-induced artificial auroral emissions can be produced at ionospheric F-region altitudes. On 12th November 2001, the EISCAT Heating
Ashrafi, M., Kosch, M. J., Kaila, K.
core