Results 31 to 40 of about 899,905 (333)

Armatambo y la sociedad Ychsma

open access: yesBulletin de l'Institut Français d'Études Andines, 2004
This document tries to describe in a provisional way the Ychsma cultural occupation of Armatambo archaeological site (south of Lima, Peru), during the Late Intermediate and Inca Periods.
Luisa E. Díaz Arriola
doaj   +1 more source

TRANSFORMATION OF THE HUMAN PROSTATE GLAND IN INTERMEDIATE AND LATE FETAL PERIODS OF DEVELOPMENT

open access: yesRevista Argentina de Anatomía Clínica, 2020
The purpose of the study was to determinate the morphometric parameters of epithelial cords, prostatic ducts, acini of the human prostate gland and their lining epithelium, the shape of prostate glands, and muscle tissue in fetal periods of development.
Irina Piatsko, Alexander Usovich
openaire   +2 more sources

Discovery and quantitative spectral analysis of an Ofpe/WN9 (WN11) star in the Sculptor spiral galaxy NGC 300 [PDF]

open access: yes, 2002
We have discovered an Ofpe/WN9 (WN11 following Smith et al.) star in the Sculptor spiral galaxy NGC 300, the first object of this class found outside the Local Group, during a recent spectroscopic survey of blue supergiant stars obtained at the ESO VLT ...
Allen D. A.   +26 more
core   +3 more sources

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

OSTEOFITOSIS VERTEBRAL EN POBLACIONES PREHISPÁNICAS DE SAN PEDRO DE ATACAMA, NORTE DE CHILE

open access: yesEstudios Atacameños
Se estudió la osteofitosis vertebral como indicador de estrés físico en grupos humanos prehistóricos de San Pedro de Atacama, durante los períodos Medio (400 DC - 1000 DC) e Intermedio Tardío (1000 DC - 1450 DC).
Rocío López-Barrales   +4 more
doaj   +1 more source

X-ray and optical observations of 1RXS J154814.5-452845: a new intermediate polar with soft X-ray emission

open access: yes, 2002
We report the identification of the ROSAT all-sky survey source 1RXS J154814.5-452845as new intermediate polar and present the results from follow-up optical and X-ray observations.
Haberl, F., Motch, C., Zickgraf, F. -J.
core   +1 more source

Late-time evolution of a self-interacting scalar field in the spacetime of dilaton black hole [PDF]

open access: yes, 2001
We investigate the late-time tails of self-interacting (massive) scalar fields in the spacetime of dilaton black hole. Following the no hair theorem we examine the mechanism by which self-interacting scalar hair decay.
C. F. E. Holzhey   +17 more
core   +2 more sources

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

Spectroscopic Follow-up of X-ray Sources in the ChaMPlane Survey: Identification of a New Cataclysmic Variable

open access: yes, 2011
We present a multi-object optical spectroscopy follow-up study of X-ray sources in a field along the Galactic Plane (l=327.42 deg, b=2.26 deg) which is part of the Chandra Multi-wavelength Plane survey (ChaMPlane).
B. Allen   +33 more
core   +3 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

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