Results 31 to 40 of about 893,592 (201)

The Factory and The Beehive I. Rotation Periods For Low-Mass Stars in Praesepe [PDF]

open access: yes, 2011
Stellar rotation periods measured from single-age populations are critical for investigating how stellar angular momentum content evolves over time, how that evolution depends on mass, and how rotation influences the stellar dynamo and the magnetically ...
Adam Kraus   +44 more
core   +2 more sources

Textilní produkce ve starém Egyptě a její doklady z Abúsíru | Ancient Egyptian textile production with the focus on finds from Abusir [PDF]

open access: yesPražské Egyptologické Studie, 2019
The aim of this article is to present the textile production in ancient Egypt. This material figured prominently in all aspects of life of the Egyptians.
Dorotea Wollnerová
doaj  

Phenological aspects of the development of species of ornamental herbaceous vines in conditions of Forest-Steppe of Ukraine

open access: yesІнтродукція Рослин, 2015
The timing of the onset and duration of the main phenological phases of development (stairs, budding, bloom, fruiting) species of ornamental herbaceous vines at growing using seedlings or sowing in the Forest-Steppe of Ukraine are determined ...
L.L. Pavlenko, S.P. Mashkovska
doaj   +1 more source

Asymptotic tails of massive scalar fields in Schwarzschild background [PDF]

open access: yes, 2001
We investigate the asymptotic tail behavior of massive scalar fields in Schwarzschild background. It is shown that the oscillatory tail of the scalar field has the decay rate of $t^{-5/6}$ at asymptotically late times, and the oscillation with the period
A. Tomimatsu   +14 more
core   +2 more sources

Evolution of a Self-interacting Scalar Field in the spacetime of a Higher Dimensional Black Hole [PDF]

open access: yes, 2005
In the spacetime of n-dimensional static charged black hole we examine the mechanism by which the self-interacting scalar hair decay. It is turned out that the intermediate asymptotic behaviour of the self-interacting scalar field is determined by an ...
G. W. Gibbons   +5 more
core   +1 more source

Unusual Trends in Solar P-Mode Frequencies During the Current Extended Minimum

open access: yes, 2010
We investigate the behavior of the intermediate-degree mode frequencies of the sun during the current extended minimum phase to explore the time-varying conditions in the solar interior.
Basu   +10 more
core   +1 more source

Sleep Timing in Late Autumn and Late Spring Associates With Light Exposure Rather Than Sun Time in College Students [PDF]

open access: yes, 2019
Timing of the human sleep-wake cycle is determined by social constraints, biological processes (sleep homeostasis and circadian rhythmicity) and environmental factors, particularly natural and electrical light exposure. To what extent seasonal changes in
Dijk, Derk-Jan   +5 more
core   +2 more sources

Una edad del bronce en los Andes CentralesContribución a la elaboración de una historia ambiental

open access: yesBulletin de l'Institut Français d'Études Andines, 2004
Evidence exists of a spectacular territorial development at the beginning of the Late Intermediate Period in the valleys of Piura, Chira and Tumbes: expansion of the agricultural frontier in the equatorial dry forest, changes in the administrative and ...
Anne Marie Hocquenghem
doaj   +1 more source

An Increased Rate of Large Flares at Intermediate Rotation Periods for Mid-to-late M Dwarfs [PDF]

open access: yesThe Astrophysical Journal, 2018
Abstract We present an analysis of flares in mid-to-late M dwarfs in the MEarth photometric survey. We search 3,985,155 observations across 2226 stars, and detect 54 large (Δm ≥ 0.018) flares in total, distributed across 34 stars. We combine our flare measurements with recent activity and rotation period results from MEarth to show that ...
Nicholas Mondrik   +3 more
openaire   +2 more sources

Challenges and Obstacles for a Bouncing Universe in Brane Models [PDF]

open access: yes, 2003
A Brane evolving in the background of a charged AdS black-hole displays in general a bouncing behaviour with a smooth transition from a contracting to an expanding phase.
A. Chamblin   +86 more
core   +3 more sources

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