Results 91 to 100 of about 510,378 (292)

Photometrical observations and shape modeling of space debris in medium Earth orbits

Solar-Terrestrial Physics
The circular medium Earth orbits with a period of about half a day in the inclination range from 50° to 70° are used by various global navigation satellite systems (GNSS), such as GLONASS, GPS, Beidou, Galileo.
Korobtsev I. V., Mishina M. N., Karavaev Y. S., Eselevich M. V., Goryashin V. E.   +4 more
doaj   +1 more source

Interferometric observation of Cygnus-А discrete radiosource scintillations at Irkutsk Incoherent Scatter radar

Solar-Terrestrial Physics, 2016
We propose a new method for analyzing data from the Irkutsk Incoherent Scatter Radar. The method allows us to accomplish interferometric observation of discrete cosmic radio source characteristics.
Globa M.V., Vasilyev R.V., Kushnaryov D.S., Medvedev A.V.   +3 more
doaj   +1 more source

Polymer Infiltration Into SURMOF Channels Enables Hydrophobic and Solid‐Like Slippery Functional Thin Films

Advanced Functional Materials, EarlyView.
We report a polymer‐chain insertion strategy to fabricate pore‐threaded MOF thin films with precisely tuned surface chemistry and wettability. Grafting n‐alkane chains into the pillared layer Cu2(bdc)2(dabco) MOF thin film's vertical nanochannels enhances water stability, and induces hydrophobicity and lubricant‐free, solid‐like slippery behavior ...
Angana Borbora, Modan Liu, Hartmut Gliemann, Uttam Manna, Christof Wöll   +4 more
wiley   +1 more source

Improving the global Total Electron Content maps provided by the Ionosphere Monitoring and Prediction Center – preliminary results

Journal of Space Weather and Space Climate
Total electron content (TEC) maps are essential for understanding the temporal and spatial variability of the ionosphere, which is of particular importance during the current solar cycle with its multitude of extreme space weather events.
Schmölter Erik, Tagargouste Youssef, Wilken Volker, Kriegel Martin, Berdermann Jens   +4 more
doaj   +1 more source

Optical effects produced by running onboard engines of low-earth-orbit spacecraft

Solar-Terrestrial Physics, 2016
This paper presents results of optical observations made during Radar-Progress Experiment performed on April 17, 2013 and July 30, 2014 after approach-correction engines (ACE) of Progress M-17M and Progress M-23M cargo spacecraft in the thermosphere had ...
Beletsky A.B., Mikhalev A.V., Khakhinov V.V., Lebedev V.P.   +3 more
doaj   +1 more source

Half a Century of Kinetic Solar Wind Models

, 2010
I outline the development of four generations of kinetic models, starting with Chamberlain's solar breeze exospheric model. It is shown why this first kinetic model did not give apposite supersonic evaporation velocities, like early hydrodynamic models ...
Lemaire, Joseph
core   +1 more source

Solar Physics

, 2019
Daily full-disk observations of the solar photosphere and chromo-sphere started at Meudon Observatory in 1908. After a review of the scientific context and the historical background, we describe the instrumental characteristics and capabilities of the new version operating since 2018.
Dalmasse, K., Malherbe, J.-M.
openaire   +2 more sources

Trifluoromethoxylated Electron Acceptor Enabling Ternary Organic Solar Cells with over 20% Power Conversion Efficiency

Advanced Functional Materials, EarlyView.
ABSTRACT In this work, we introduce a trifluoromethoxy (OCF3) group as a pseudo‐halogen terminal group design for non‐fullerene acceptors, which combines strong inductive electron‐withdrawing ability with moderate resonance donation. The as‐synthesized BTP‐OCF3, when benchmarked against its methoxy analogue BTP‐OCH3, demonstrates narrowed bandgap ...
Chunliang Li, Anhai Liang, Shuwei Qiu, Gavin Ho Ming Ng, Aleksandr Sergeev, Joshua Yuk Lin Lai, Bosen Zou, Xianghao Zeng, Jicheng Yi, Hongxiang Li, Junpo Guo, Wei Liu, Jia Yao, Kam Sing Wong, Zhipeng Kan, Sai Ho Pun, He Yan   +16 more
wiley   +1 more source

First results of registering ionospheric disturbances obtained with SibNet network of GNSS receivers in active space experiments

Solar-Terrestrial Physics, 2017
Global and regional networks of GNSS receivers have been successfully used for geophysical research for many years; the number of continuous GNSS stations in the world is steadily growing.
Ishin A.B., Perevalova N.P., Voeykov S.V., Khakhinov V.V.   +3 more
doaj   +1 more source

Voltage‐Gated Dedoping of n‐Doped Poly(benzodifurandione) as an Interfacial Protective Mechanism in Electrochromic Devices

Advanced Functional Materials, EarlyView.
Electrochromic polymer stability under overpotential is improved by inserting an ultrathin, transparent n‐doped poly(benzodifurandione) interlayer between indium tin oxide and a poly(3,4‐propylenedioxythiophene)‐based electrochromic polymer. The interlayer supports rapid switching at operating bias, then becomes resistive near +0.8 V to suppress excess
Priyanka Rout, Palak Mehra, Won‐June Lee, Liyan You, Jianguo Mei   +4 more
wiley   +1 more source