Results 21 to 30 of about 1,956,624 (317)

POLAR investigation of the Sun—POLARIS [PDF]

, 2008
The POLAR Investigation of the Sun (POLARIS) mission uses a combination of a gravity assist and solar sail propulsion to place a spacecraft in a 0.48 AU circular orbit around the Sun with an inclination of 75° with respect to solar equator.
Appourchaux, Thierry, Gizon, Laurent, Garbe, G., Regnier, Stephane, Matthews, B.S.A., Velli, Marco, Garbe, Gregory, Socker, D., Ulrich, R., Newmark, Jeffrey, Maksimovic, Milan, Andretta, V., Alexander, D., Schmutz, Werner, Appourchaux, T., Liewer, Paulett, Stuttard, M., Martinez-Pillet, V., Liewer, P., Matthews, Sarah, Vourlidas, Angelos, Leipold, Manfred, Trosseille, C., Matthews, B. S. A., Fineschi, S., Corbard, Thierry, Fineschi, Silvano, Martinez-Pillet, Valentín, Stuttard, D., D’Arrigo, P., Velli, M., Zurbuchen, T., Leipold, M., Harra, L., Murphy, N., Kosovichev, Alexander, Auchère, F., Leibacher, J., D’Arrigo, Paolo, Régnier, S., Harra, Louise, Matthews, B., Ayon, J., Andretta, Vincenzo, Ayon, Juan, Trosseille, Clement, Floyd, Linton, Ulrich, Roger, Wimmer-Schweingruber, C. R., Vourlidas, A., Moses, D., Finsterle, W., Hassler, Don, Wimmer-Schweingruber, C., Corbard, T., Kosovichev, A., Auchère, Frédéric, Moses, Daniel, Schmutz, W., Wimmer-Schweingruber, C.R., Stuttard, Matthew, Maksimovic, M., Finsterle, Wolfgang, Mewaldt, R., D'Arrigo, P., Zurbuchen, Thomas, Newmark, J., Watt, Mark, Watt, M., Floyd, L., Alexander, David, Gizon, L., Leibacher, John, Spadaro, D., Hassler, D.   +74 more
core   +1 more source

Extension of the sun-synchronous Orbit [PDF]

, 2010
Through careful consideration of the orbit perturbation force due to the oblate nature of the primary body a secular variation of the ascending node angle of a near-polar orbit can be induced without expulsion of propellant.
Bosquillon de Frescheville, Francois, Vasile, M., Robert McKay, de Frescheville, F.B., François Bosquillon de Frescheville, McKay, R., Malcolm Macdonald, Macdonald, M., McKay, R.J., Massimiliano Vasile   +9 more
core   +1 more source

Isolated Sunspot with a Dark Patch in the Coronal Emission

Open Astronomy, 2012
On the base of the 17 GHz radio maps of the Sun taken with the Nobeyama Radio Heliograph we estimate plasma parameters in the specific region of the sunspot atmosphere in the active region AR 11312.
Bezrukov D. A., Ryabov B. I., Shibasaki K.   +2 more
doaj   +1 more source

Optical instrumentation for chromospheric monitoring during solar cycle 25 at Paris and Côte d’Azur observatories

Journal of Space Weather and Space Climate, 2020
We present the observing program proposed by Paris and Côte d’Azur Observatories for monitoring solar activity during the upcoming cycle 25 and providing near real time images and movies of the chromosphere for space-weather research and applications ...
Malherbe Jean-Marie, Corbard Thierry, Dalmasse Kevin   +2 more
doaj   +1 more source

Revealing Fifth-Grade Students’ Understanding of the Universe

Mimbar Sekolah Dasar, 2022
Previous research has shown that students at almost all levels have misconceptions about both the shapes and sizes of celestial bodies in space. This study is essential to conduct on the students who take space topic in their schools for the first time ...
Fatma Coştu, Nesibe Firdevs Özdemir, Bayram Coştu   +2 more
doaj   +1 more source

Latitudinal Distribution of Sunspot and North-South Asymmetry Revisited [PDF]

Journal of Astronomy and Space Sciences, 2018
The solar magnetic field plays a central role in the field of solar research, both theoretically and practically. Sunspots are an important observational constraint since they are considered a discernable tracer of emerged magnetic flux tubes, providing ...
Heon-Young Chang
doaj   +1 more source

A NEW METHOD FOR NORTH-SOUTH ASYMMETRY OF SUN SPOT AREA ANALYSIS [PDF]

Journal of Astronomy and Space Sciences, 2007
We have studied the temporal variation in the North-South asymmetry of the sunspot area during the period from 1874 to 2007. Though the 9-year periodicity is commonly reported, shorter periodicities is still under study.
Heon-Young Chang
doaj   +1 more source

Sun-Spots [PDF]

Science, 1885
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openaire   +3 more sources

Exploring New Horizons for Wine Grapes: Modulating Functional Effects by Varying Harvest Timing and Solar Exposure

Foods
Grenache (GN) and Cabernet Sauvignon (CS) are two traditional red grape varieties widely cultivated in the Mediterranean area and both late-ripening cultivars, which makes them less sensitive to global warming conditions and more stable to harvest timing.
Daniel Rico, Daniel Schorn-García, Laura Aceña, María Jesús García-Casas, Olga Busto, Ricard Boqué, Montserrat Mestres, Ana Belén Martín-Diana   +7 more
doaj   +1 more source

Epigenetic silencing of the liver‐specific lncRNA LUNAR promotes liver cancer progression via NOTCH activation

Molecular Oncology, EarlyView.
LUNAR is a liver‐specific long noncoding RNA (lncRNA) that is highly expressed in normal liver but becomes epigenetically silenced in hepatocellular carcinoma through promoter hypermethylation. Loss of LUNAR is associated with NOTCH activation, epithelial–mesenchymal transition, and metastasis, whereas restoring LUNAR restrains metastatic progression ...
Se Ha Jang, Hyung Seok Kim, Geum Ok Baek, Moon Gyeong Yoon, Su In Lee, Jee‐Yeong Jeong, Ji Eun Han, Soon Sun Kim, Jae Youn Cheong, Jung Woo Eun   +9 more
wiley   +1 more source