Results 51 to 60 of about 1,492,696 (213)

Characteristics of rainfall and erosion under natural conditions of land use in semiarid regions

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2013
The characteristics of rainfall can provide important information for management and land use may also minimize the water erosion problems. This study was carried out to evaluate soil and water loss in erosion plots with different coverage, and the ...
Cleene A. de Lima   +4 more
doaj   +1 more source

Optical Studies of Twenty Longer-Period Cataclysmic Binaries

open access: yes, 2010
We obtained time-series radial velocity spectroscopy of twenty cataclysmic variable stars, with the aim of determining orbital periods P_orb. All of the stars reported here prove to have P_orb > 3.5 h.
Peters, Christopher S.   +2 more
core   +1 more source

A decade of ejecta dust formation in the Type IIn SN 2005ip [PDF]

open access: yes, 2019
In order to understand the contribution of core-collapse supernovae to the dust budget of the early universe, it is important to understand not only the mass of dust that can form in core-collapse supernovae but also the location and rate of dust ...
Andrews, J. E.   +8 more
core   +7 more sources

Intensity modulated radiotherapy (IMRT) or conformational radiotherapy (3D-CRT) with conventional fractionation for prostate cancer: Is there any clinical difference? [PDF]

open access: yesInternational Brazilian Journal of Urology
Purpose: To compare the treatment outcomes of a cohort of prostate cancer patients treated with conventional schedule using IMRT or 3DRT technique.
Gustavo Viani   +2 more
doaj   +2 more sources

Early recurrence during the blanking period and left atrial reverse remodeling after catheter ablation for non-paroxysmal atrial fibrillation

open access: yesInternational Journal of Cardiology: Heart & Vasculature, 2020
Background: Early recurrence of atrial tachyarrhythmia (ERAT) during a 90-day blanking period (BP) often occurs after atrial fibrillation (AF) ablation. Left atrial reverse remodeling (LARR), which is the reduction in LA volume (LAV), also occurs during ...
Takafumi Oka   +12 more
doaj   +1 more source

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

MYRACRODRUON URUNDEUVA FR ALL. (AROEIRA TREE) POPULATION DYNAMICS, DIAMETER GROWTH RATE AND ITS POTENTIAL FOR SUSTAINABLE MANAGEMENT IN SUCCESSIONAL TROPICAL DRY FORESTS OF BRAZIL

open access: yesRevista Árvore, 2018
Myracrodruon urundeuva, better known in Brazil as “Aroeira”, is an arboreal species highly used for its commercial and pharmacological value. Despite the high commercial value in the timber market, this species lacks studies analyzing the recovery time ...
Sofia Calvo Rodriguez   +3 more
doaj   +1 more source

Acerca de complejidad, desigualdad social y el complejo cultural Pica-Tarapacá en los Andes Centro-Sur (1000-1450 DC)

open access: yesEstudios Atacameños
El propósito principal de este trabajo es revisar los conceptos de complejidad y desigualdad social, intentando comprender arqueológicamente los sistemas que desarrollaron las poblaciones de los Andes Centro-Sur durante el Período Intermedio Tardío, en ...
Mauricio Uribe R
doaj   +1 more source

Patrón de asentamiento y uso del espacio. Precordillera de Arica, extremo norte de Chile, siglos X-XV

open access: yesBulletin de l'Institut Français d'Études Andines, 2005
On the basis of the survey and analysis of a set of about of thirty archaeological sites, an approach is offered to the settlements patterns existing in the premountain range of Arica, northern Chile during centuries X to the XV.
Juan Chacama R.
doaj   +1 more source

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