Results 31 to 40 of about 552,904 (341)

Solar-Wind Structure [PDF]

open access: yes, 2020
The hot solar atmosphere continually expands out into space to form the solar wind, which drags with it the Sun’s magnetic field. This creates a cavity in the interstellar medium, extending far past the outer planets, within which the solar magnetic-field dominates. While the physical mechanisms by which the solar atmosphere is heated are still debated,
openaire   +2 more sources

Proton and Electron Temperatures in the Solar Wind and Their Correlations with the Solar Wind Speed

open access: yesThe Astrophysical Journal, 2023
Abstract The heating and acceleration of the solar wind remains one of the unsolved fundamental problems in heliophysics. It is usually observed that the proton temperature T i is highly correlated with the solar wind speed V SW, while the electron temperature T
Chen 辰 Shi 时   +10 more
openaire   +5 more sources

Are periodic solar wind number density structures formed in the solar corona? [PDF]

open access: yes, 2009
[1] We present an analysis of the alpha to proton solar wind abundance ratio (AHe) during a period characterized by significant large size scale density fluctuations, focusing on an event in which the proton and alpha enhancements are anti-correlated. In
Kasper, J.   +2 more
core   +2 more sources

Exploitation of indoor illumination for typical flat dwellings in the Mediterranean area

open access: yesEnergy Reports, 2023
The 2018/844 Energy Performance of Buildings Directive (EU) has widened the scope of appropriate design of buildings from a pure energy performance and carbon emissions perspective to a wider scope that includes indoor comfort, and indoor air quality ...
Diego Granados-López   +4 more
doaj   +1 more source

Solar cycle dependence of scaling in solar wind fluctuations [PDF]

open access: yes, 2008
In this review we collate recent results for the statistical scaling properties of fluctuations in the solar wind with a view to synthesizing two descriptions: that of evolving MHD turbulence and that of a scaling signature of coronal origin that ...
Chapman, Sandra C., Hnat, B., Kiyani, K.
core   +4 more sources

The performance prediction and techno-economic analyses of a stand-alone parabolic solar dish/stirling system, for Jamshoro, Pakistan

open access: yesCleaner Engineering and Technology, 2021
This study aims to propose a simulation as well as mathematical model to carry out the performance assessment and efficiency improvement of a stand-alone Parabolic Solar Dish Stirling (PSDS) system. The simulation for a 25 ​kW PSDS system is performed in
Amjad Ali Lashari, M.E in Electrical Power   +5 more
doaj   +1 more source

Solar Wind and its Evolution [PDF]

open access: yes, 2011
By using our previous results of magnetohydrodynamical simulations for the solar wind from open flux tubes, I discuss how the solar wind in the past is different from the current solar wind.
A Telleschi   +32 more
core   +2 more sources

Coordinated control of rotor kinetic energy and pitch angle for large‐scale doubly fed induction generators participating in system primary frequency regulation

open access: yesIET Renewable Power Generation, 2021
This paper presents a control strategy of large‐scale wind‐thermal power joint primary frequency regulation. First, an integrated control strategy is established rotor kinetic energy control and pitch angle control for wind turbine generators ...
Peihong Yang   +8 more
doaj   +1 more source

Magnetic nulls and super-radial expansion in the solar corona [PDF]

open access: yes, 2017
Magnetic fields in the sun's outer atmosphere -- the corona -- control both solar-wind acceleration and the dynamics of solar eruptions. We present the first clear observational evidence of coronal magnetic nulls in off-limb linearly polarized ...
Burkepile, Joan   +7 more
core   +3 more sources

Hydrogen generation from methanol with network efficient power control for wireless communication system

open access: yesAIP Advances, 2021
This paper presents a numerical and experimental study on the performance of a methanol steam reformer integrated with a hydrogen/air combustion reactor for hydrogen production.
Hanmin Liu, Jie Shen, Hua Xiang
doaj   +1 more source

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