Results 61 to 70 of about 2,718,616 (303)

Real-time forecast of MUF for radio paths from current data obtained from oblique sounding with continuous chirp signal

Solar-Terrestrial Physics, 2018
We present a technique of MUF real-time forecast based on time extrapolation for maximum observed frequencies smoothed over a long-term forecast along a given path.
Ilyin N.V., Bubnova T.V., Grozov V.P., Penzin M.S., Ponomarchuk S.N.   +4 more
doaj   +1 more source

Student perspectives in quantum physics [PDF]

, 2008
Introductory courses in classical physics are promoting in students a realist perspective, made up in part by the belief that all physical properties of a system can be simultaneously specified, and thus determined at all future times. Such a perspective
Mel Sabella, Charles Henderson, Leon Hsu, Charles Baily, Baily, Charles, Finkelstein, Noah D., Noah D. Finkelstein   +6 more
core   +1 more source

Room‐Temperature Synthesis of Strongly Confined Lead Halide Perovskite Quantum Dots

Advanced Functional Materials, EarlyView.
CsPbX3${\rm CsPbX}_3$ lead halide perovskite quantum dots (QDs) are synthesized in a room‐temperature, five‐minute synthesis, yielding size‐controlled QDs with bright, tunable emission governed by reaction conditions and halide composition. A strongly binding ligand, OD‐PEA, ensures months‐long stability under ambient conditions and facilitates their ...
Anna Abfalterer, Yuzhen J. Zhou, Roshini Jayabalan, Julian Holzinger, Lukas M. Rescher, Rik Hooijer, Aladin Ullrich, Nina A. Henke, Immanuel Plangger, Erkan Aydin, Bert Nickel, Anne K. Schütz, Wolfgang Brütting, Alexander S. Urban   +13 more
wiley   +1 more source

Control of solar sail periodic orbits in the elliptic three-body problem [PDF]

, 2009
A solar sail essentially consists of a large mirror that uses the momentum change due to photons reflecting off the sail for its impulse. Solar sails are therefore unique spacecraft, as they do not require fuel for propulsion [1].
Biggs, J.D., BIGGS, JAMES DOUGLAS, Waters, Thomas, McInnes, Colin, Biggs, James D., McInnes, Colin R.   +5 more
core   +1 more source

Ambient‐Stable Transparent P‐Type CuI Transistors Via Room‐Temperature Pulsed Laser Deposition

Advanced Functional Materials, EarlyView.
An in situ PLD fabricated AlOx${\rm AlO}_x$/CuI/AlOx${\rm AlO}_x$ sandwich structure enables stable CuI TFTs with a field‐effect mobility of 2.3 ±$\pm$ 0.7 cm2${\rm cm}^{2}$ V−1${\rm V}^{-1}$ s−1${\rm s}^{-1}$ and excellent ambient stability. Complementary inverters based on CuI:Rb and ZnO:Al exhibit rail‐to‐rail voltage transfer characteristics and an
Yang Chen, Susanne Selle, Michael S. Bar, Michael Lorenz, Holger von Wenckstern, Marius Grundmann   +5 more
wiley   +1 more source

Modernization of the Irkutsk Incoherent Scatter Radar

Solar-Terrestrial Physics, 2017
We present the results of modernization of the Irkutsk Incoherent Scatter Radar’s control and acquisition system. The modernization was carried out using results of space experiments Plasma–Progress and Radar–Progress involving Progress cargo spacecraft.
Kushnarev D.S., Lebedev V.P., Khakhinov V.V., Evstifeev S.E., Zarudnev V.E.   +4 more
doaj   +1 more source

Climatology of 557.7 nm Emission Layer Parameters over South-East Siberia, Observations and Model Data

Applied Sciences, 2023
The paper deals with long-term means of 557.7 nm atomic oxygen airglow intensity (OI) and air temperature within the mesopause over the southern regions of East Siberia.
Roman Vasilyev, Andrei Saunkin, Olga Zorkaltseva, Maksim Artamonov, Alexander Mikhalev   +4 more
doaj   +1 more source

Ultrafast Thermal Shock Synthesis of CuNiSnLa Medium‐Entropy Metallic Glass for Sustainable Nitrogen Fixation via Plasma‐Coupled Electrocatalysis

Advanced Functional Materials, EarlyView.
This work introduces an ultrafast thermal shock strategy to synthesize a CuNiSnLa medium‐entropy metallic glass (MEMG). The rapid heating and cooling process generates a robust, highly active catalyst for electrocatalytic nitrate reduction to ammonia (NRA).
Hongbo Chen, Peng‐Jun Deng, Yang Liu, Shenglong Huang, Shuo Sun, Haoxuan Li, Jiajia Lu, Panagiotis Tsiakaras   +7 more
wiley   +1 more source

New Swarm products NeGIX and TEGIX for monitoring horizontal ionospheric gradients

Journal of Space Weather and Space Climate
The detection, monitoring, and characterization of ionospheric perturbations are key areas of space weather research due to their significant impact on man-made technological systems.
Cahuasquí Juan Andrés, Hoque Mohammed Mainul, Jakowski Norbert, Buchert Stephan, Vasylyev Dmytro, Nykiel Grzegorz, David Paul, Tagargouste Youssef, Kriegel Martin, Berdermann Jens, Nielsen Klaus   +10 more
doaj   +1 more source

Statistical analysis of microflares as observed by the 4–8 GHz spectropolarimeter

Solar-Terrestrial Physics, 2023
Radio observations of weak events are one of the promising methods for studying energy release and non-thermal processes in the solar corona. The development of instrumental capabilities allows for radio observations of weak transient coronal events ...
Zhdanov D. A., Altyntsev A. T., Meshalkina N. S., Anfinogentov S. A.   +3 more
doaj   +1 more source