Results 1 to 10 of about 232,366 (268)
Turkish Journal of Forestry, 2021 At present, majority of commercial poplar plantations aimed at producing quality timbers with larger dimension are established in wider planting spacings in Turkey.
Sacit Koçer, Muhammed Kara
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Light curve analysis of main belt asteroids 4747, 5255, 11411, 15433, 17866
Open Astronomy, 2023 The main belt asteroids 4747, 5255, 11411, 15433, and 17866 were studied at the Baldone Astrophysical Observatory in the time span range 2018–2022. The obtained light curve data together with published Minor Planet Center data are analyzed with Fourier ...
Eglitis Ilgmars, Kristers Nagainis
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Rotational period of GQ Lupi [PDF]
Astronomy & Astrophysics, 2007 Aims. We wanted to determine the rotation parameters of GQ Lup A, thereby constraining the evolutionary history of the GQ Lup system. Methods. We have undertaken a photometric monitoring campaign on GQ Lup A consisting of two epochs spaced one year apart. We also searched the photometric archives to enlarge the data set. Results.
Broeg, C. +6 more
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Jupiter and Saturn rotation periods [PDF]
Planetary and Space Science, 2009 Anderson & Schubert (2007, Science,317,1384) proposed that Saturn's rotation period can be ascertained by minimizing the dynamic heights of the 100 mbar isosurface with respect to the geoid; they derived a rotation period of 10h 32m 35s. We investigate the same approach for Jupiter to see if the Jovian rotation period is predicted by minimizing the
Helled, Ravit +2 more
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Determining the Rotation Periods of an Inactive LEO Satellite and the First Korean Space Debris on GEO, KOREASAT 1 [PDF]
Journal of Astronomy and Space Sciences, 2016 Inactive space objects are usually rotating and tumbling as a result of internal or external forces. KOREASAT 1 has been inactive since 2005, and its drift trajectory has been monitored with the optical wide-field patrol network (OWL-Net).
Jin Choi +15 more
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Rotation Periods of Asteroids Determined With Bootstrap Convex Inversion From ATLAS Photometry
Frontiers in Astronomy and Space Sciences, 2022 The rotation period is one of the fundamental physical characteristics of asteroids. It can be determined from photometric measurements by standard methods of time-series period analysis or by creating a physical model of an asteroid with the rotation ...
Josef Ďurech +3 more
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Rotation of Periodic Strings and Short Superstrings [PDF]
BRICS Report Series, 1996 This paper presents two simple approximation algorithms for the shortest superstring problem, with approximation ratios 2.67 and 2.596, improving the best previously published 2.75<br />approximation. The framework of our improved algorithms is similar to that of previous algorithms in the sense that they construct a superstring by computing some
Dany Breslauer +2 more
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Rotational Activity around an Obstacle in 2D Cardiac Tissue in Presence of Cellular Heterogeneity
Mathematics, 2021 Waves of electrical excitation rotating around an obstacle is one of the important mechanisms of dangerous cardiac arrhythmias occurring in the heart damaged by a post-infarction scar.
Pavel Konovalov +4 more
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Journal of Forest Science, 2022 The exact determination of the rotation period is still a current and important essential issue of forestry. It attracts the attention of forest economists, managers and owners worldwide, not only of forest economists but also of forest managers.
Michaela Korená Hillayová +3 more
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The rotation period of Nereid [PDF]
Monthly Notices of the Royal Astronomical Society, 1991 Observations of Nereid were obtained using a CCD camera on the 1-m Jacobus Kapteyn telescope on La Palma during the period 1990 July 10 to 1990 July 18. By comparing the brightness of Nereid with comparison stars, a composite light curve was obtained.
I. P. Williams +2 more
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