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Dosimeter arrangement for effective dose and isodose curves desterminations into craniofacial cavity
Disposición de dosímetros para determinaciones de curvas de dosis e isodosis efectivas en la cavidad craneofacial
(2023)
Tomographic dental imaging with cone beam computed tomography has developed so fast in Costa Rica, in the absence of investigations to determine the absorbed dose by the patients, we propose a TLD dosimeter array into RANDO ...
A study of a coronal hole associated with a large filament eruption
(2017)
We report the results of a detailed study of an equatorial coronal hole and a dimming region related to the eruptions of a nearby large filament and subsequent coronal mass ejections (CMEs). The dynamic eruptions of the ...
Algunas ideas para lograr un mayor desarrollo científico y tecnológico en Costa Rica
(2000)
El propósito de este capítulo, el cual está basado en el trabajo de Fernández y Páez (2000), es describir las actividades en Ciencias Espaciales que se están llevando a cabo en Costa Rica, estas actividades están centradas ...
The Hubble Constant and the Deceleration Parameter in Anisotropic Cosmological Spaces of Petrov type D
(2016-11)
In this paper the Hubble parameter and the deceleration parameter are analyzed for a group of anisotropic homogeneous solutions of the Petrov type-D. It is obtained that for the said set of solutions can be constructed a ...
Observed Changes (1970-1999) in Extreme Hydroclimatic Events in Central America
(2018-04-20)
Previous studies have shown that most of Central America has been experiencing warming trends during the last 30-50 years, while precipitation annual totals have not changed much. Warming alone can exacerbate the effects ...
Exact Solutions of a Chaplygin Gas in an Anisotropic Space-Time of Petrov D
(2017)
This document obtains two exact solutions to the anisotropic spacetime of Petrov D by using the model of a perfect fluid. These solutions represent a scenario of a universe in which the pressure P and the energetic density ...
Structure factor of a relaxor ferroelectric
(2015-04-14)
We study a minimal model for a relaxor ferroelectric including dipolar interactions, and short-range harmonic and anharmonic forces for the critical modes as in the theory of pure ferroelectrics together with quenched ...
Validación de Calidades de Rayos X Diagnósticos en el Laboratorio de Metrología de Radiaciones Ionizantes
Quality Validation of Diagnostic X-Ray in the Metrology Laboratory of Ionizing Radiation
(2018)
El objetivo del trabajo fue validar la calidad de radiación para energía de radiodiagnósticos del Laboratorio de Metrología de la Universidad de Costa Rica (UCR) como parte del proyecto técnico de cooperación COS9008 ...
Evaluación de la Seguridad Radiológica del CICANUM: Laboratorio de Metrología de Radiaciones Ionizantes y Almacén de Residuos Radiactivos
Radiological Safety Assessment of CICANUM: Ionizing Radiation Metrology Laboratory and Radioactive Waste Storage
(2018)
El Centro de Investigación en Ciencias Atómicas, Nucleares y Moleculares (CICANUM) posee laboratorios que constituyen un riesgo radiológico latente, tales como, el Laboratorio de Metrología de Radiaciones Ionizantes
(LMRI) ...
The 2:3:6 quasi-periodic oscillation structure in GRS 1915+105 and cubic subharmonics in the context of relativistic discoseismology
(Monthly Notices of the Royal Astronomical Society 440:3011-3015, 2014-06-01)
We propose a simple toy model to explain the 2:3:6 quasi-periodic oscillation (QPO) structure in GRS 1915+105 and, more generally, the 2:3 QPO structure in XTE J1550−564, GRO J1655−40 and H1743−322. The model exploits the ...