Results 31 to 40 of about 106 (94)

Control of yellow photoluminescence in AlGaN/GaN heterostructures [PDF]

open access: yesModern Electronic Materials, 2019
Photoluminescence with the peak corresponding to yellow color of the visible spectrum (so-called yellow luminescence) originates from deep levels in the GaN buffer layers of heterostructures and depends on heterostructure growth conditions.
Nadezhda B. Gladysheva   +4 more
doaj   +3 more sources

Assessment of trec and krec levels in COVID-19 patients with varying disease severity

open access: yesИнфекция и иммунитет, 2023
According to the WHO data, the number of infected people exceeded 765.2 million people during the COVID-19 pandemic. The severity of patient’s condition is determined by immune system hyperactivation.
M. A. Saitgalina   +10 more
doaj   +1 more source

Design for Testability of Integrated Circuits and Project Protection Difficulties

open access: yesРоссийский технологический журнал, 2019
Design solutions of domestic VLSI were obtained as a result of the application of computeraided design tools of a foreign supplier (CAD Synopsys, Cadence Design Systems and Mentor Graphics), based on standard libraries of PDK elements (Project Design KIT)
E. Ph. Pevtsov   +2 more
doaj   +1 more source

Modern Faraday Rotation Studies to Probe the Solar Wind

open access: yesFrontiers in Astronomy and Space Sciences, 2022
For decades, observations of Faraday rotation have provided unique insights into the plasma density and magnetic field structure of the solar wind. Faraday rotation (FR) is the rotation of the plane of polarization when linearly polarized radiation ...
Jason E. Kooi   +11 more
doaj   +1 more source

New Radical-Cation Salts Based on the TMTTF and TMTSF Donors with Iron and Chromium Bis(Dicarbollide) Complexes: Synthesis, Structure, Properties

open access: yesCrystals, 2021
New radical-cation salts based on tetramethyltetrathiafulvalene (TMTTF) and tetramethyltetraselenefulvalene (TMsTSF) with metallacarborane anions (TMTTF)[3,3′-Cr(1,2-C2B9H11)2], (TMTTF)[3,3′-Fe(1,2-C2B9H11)2], and (TMTSF)2[3,3′-Cr(1,2-C2B9H11)2] were ...
Denis M. Chudak   +11 more
doaj   +1 more source

The Faraday Effect Tracker of Coronal and Heliospheric Structures (FETCH) instrument

open access: yesFrontiers in Astronomy and Space Sciences, 2023
There continue to be open questions regarding the solar wind and coronal mass ejections (CMEs). For example: how do magnetic fields within CMEs and corotating/stream interaction regions (CIRs/SIRs) evolve in the inner heliosphere?
Elizabeth A. Jensen   +18 more
doaj   +1 more source

Solar Sources of Interplanetary Magnetic Clouds Leading to Helicity Prediction

open access: yesSpace Weather, Volume 16, Issue 11, Page 1668-1685, November 2018., 2018
Abstract This study identifies the solar origins of magnetic clouds that are observed at 1 AU and predicts the helical handedness of these clouds from the solar surface magnetic fields. We started with the magnetic clouds listed by the Magnetic Field Investigation (MFI) team supporting NASA's Wind spacecraft in what is known as the MFI table and worked
Roger K. Ulrich, Pete Riley, T. Tran
wiley   +1 more source

The Solar Activity Monitor Network – SAMNet

open access: yesJournal of Space Weather and Space Climate, 2022
The Solar Activity Magnetic Monitor (SAMM) Network (SAMNet) is a future UK-led international network of ground-based solar telescope stations. SAMNet, at its full capacity, will continuously monitor the Sun’s intensity, magnetic, and Doppler velocity ...
Erdélyi Robertus   +39 more
doaj   +1 more source

First Observations of a Geomagnetic Superstorm With a Sub‐L1 Monitor

open access: yesSpace Weather, Volume 23, Issue 3, March 2025.
Abstract Forecasting the geomagnetic effects of solar coronal mass ejections (CMEs) is currently an unsolved problem. CMEs, responsible for the largest values of the north‐south component of the interplanetary magnetic field, are the key driver of intense and extreme geomagnetic activity.
E. Weiler   +12 more
wiley   +1 more source

Preliminary Results on Irradiance Measurements from Lyra and Swap

open access: yesAdvances in Astronomy, Volume 2012, Issue 1, 2012., 2012
The first and preliminary results of the photometry of Large Yield Radiometer (LYRA) and Sun Watcher using Active Pixel system detector and Image Processing (SWAP) onboard PROBA2 are presented in this paper. To study the day‐to‐day variations of LYRA irradiance, we have compared the LYRA irradiance values (observed Sun as a star) measured in Aluminum ...
S. T. Kumara   +8 more
wiley   +1 more source

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