Results 21 to 30 of about 1,433,455 (143)

Participation trends in holistic movement practices: a 10-year comparison of yoga/Pilates and t’ai chi/qigong use among a national sample of 195,926 Australians

open access: yesBMC Complementary and Alternative Medicine, 2017
Background In recent decades, the evidence supporting the physical and mental health benefits of holistic movement practices such as yoga and t’ai chi have become increasingly established.
Ineke Vergeer   +6 more
doaj   +1 more source

Incoherent Solar Radio Emission

open access: yesFrontiers in Astronomy and Space Sciences, 2020
Incoherent solar radio radiation comes from the free-free, gyroresonance, and gyrosynchrotron emission mechanisms. Free-free is primarily produced from Coulomb collisions between thermal electrons and ions.
Alexander Nindos
doaj   +1 more source

The epidemiology of aerobic physical activity and muscle-strengthening activity guideline adherence among 383,928 U.S. adults

open access: yesInternational Journal of Behavioral Nutrition and Physical Activity, 2019
Background The World Health Organization’s ‘Global Recommendations on Physical Activity for Health’ state that adults should engage in regular moderate-to-vigorous intensity aerobic physical activity (MVPA; e.g.
Jason A. Bennie   +4 more
doaj   +1 more source

Seismology of active regions: Current status and perspectives

open access: yesFrontiers in Astronomy and Space Sciences, 2023
The goal of helioseismology is to provide accurate information about the Sun’s interior from the observations of the wave field at its surface. In the last three decades, both global and local helioseismology studies have made significant advances and ...
Sushanta Tripathy
doaj   +1 more source

Prominences in Active Regions [PDF]

open access: yesSymposium - International Astronomical Union, 1968
As an interplay of plasma and magnetic field the solar prominences represent a nice example of cosmical hydromagnetics. Due to stronger magnetic fields in active regions the prominence processes are more violent there than in non-active regions. Observing with a coronagraph or watching prominence movies one recognizes some characteristic processes in ...
openaire   +1 more source

Magnetohydrodynamics of an active region [PDF]

open access: yesSymposium - International Astronomical Union, 1968
The dynamics of the magnetic fields which are imbedded into the non-stationary outer layers of the Sun show many facets of interest to observers and theoreticians alike. In a short review I can only deal with a small number of them and occasionally glance at some others.
openaire   +1 more source

Probing the rotation rate of solar active regions: the comparison of methods

open access: yesOpen Astronomy, 2022
Sunspot groups are often used as tracers to probe the differential rotation of the Sun. However, the results on the rotation rate variation obtained by different authors are not always in agreement. The reason for this might be a number of effects.
Kutsenko Alexander S.   +1 more
doaj   +1 more source

Active regions [PDF]

open access: yesSolar Physics, 1970
<p>Published - <a href="/records/3vtm5-qqc59/files/1970SoPh___14__328Z.pdf?download=1">1970SoPh___14__328Z.pdf</a></p>
openaire   +2 more sources

Applications of Image Processing Methods in Solar Coronal Data Analyzes: An Overview [PDF]

open access: yesIranian Journal of Astronomy and Astrophysics
The solar corona, the outermost layer of the Sun's atmosphere, plays a crucial role in understanding solar phenomena and their impact on space weather and terrestrial systems.
Mohsen Javaherian   +3 more
doaj   +1 more source

Measuring Magnetic Field With Atacama Large Millimeter/Submillimeter Array

open access: yesFrontiers in Astronomy and Space Sciences, 2020
The article discusses the use of magnetic bremsstrahlung at short radio wavelengths for measuring solar magnetic fields. The polarization and brightness spectra observed at millimeter wavelengths can be used to deduce the vertical component of the ...
Maria Loukitcheva   +2 more
doaj   +1 more source

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