Browsing Artículos científicos by Title
Now showing items 1-20 of 29
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A Collaborative Effort Between Caribbean States for Tsunami Numerical Modeling: Case Study CaribeWave15
(Pure and Applied Geophysics vol.175 no.2 1405-1428 2017, 2017)Historical records have shown that tsunami have affected the Caribbean region in the past. However infrequent, recent studies have demonstrated that they pose a latent hazard for countries within this basin. The Hazard ... -
Characterization of the VARIAN®PaxScan 2020+ flat panel detector for quantitative X-ray imaging
(X-Ray Spectrometry vol.45 no.3 169-175 2016, 2016-02-19)In this work, the response of the VARIAN® PaxScan 2020+ flat panel detector was characterized in terms of spatial resolution and uniformity across the detection area along with detection efficiency for photon beams from ... -
Effect of inorganic salts and matrix crosslinking on the dose response of polymer gel dosimeters based on acrylamide
(Elsevier Ltd, 2018-07-17)The use of additives in polymer gel dosimeters to enhance their sensitivity or to improve their performance is of great importance for their application in radiomedicine. Inorganic salts have been used as additives with ... -
Efficiency measurement and Monte Carlo simulations of a CeBr3 scintillator
(Applied Radiation and Isotopes Vol.120. 71-75 2016, 2016-11)CeBr3 crystals meet many of the demands of high performance scintillators, due to their excellent timing properties, good effective Z and high photon yield. It is important to characterize their efficiency and to verify ... -
Electrochemical Hydrogen Oxidation on Pt(100): a Combined Direct Molecular Dynamics/Density Functional Theory Study
(Electrocatalysis, 2015-08-09)We have studied the hydrogen oxidation reaction on various catalytic sites at the water/Pt(100) interface with first-principles direct molecular dynamics and minimum energy pathway calculations. The calculations indicate ... -
Evaluación de fuentes tsunamigénicas en el sur de Centroamérica y la generación de mapas de evacuación en la costa Pacífica de Costa Rica
(Geo - Network of Latinomerican - German alumi (GOAL) 7-10 2015, 2015)Costa Rica se encuentra en el extremo oeste de la placa Caribe, en el sur de América Central. En esta región se da la interacción de cuatro placas tectónicas. La placa Cocos se subduce bajo la placa Caribe y la microplaca ... -
Evaluación de la peligrosidad del tsunami de Chile del 16 de setiembre del 2015 para Costa Rica
(Revista Ciencias Marinas y Costeras vo.8 no.1 113-128 2016, 2016)A Mw 8.3 earthquake took place in Chile on September 16th, 2015 causing a local tsunami. As a consequence, this earthquake prompted the National Tsunami Monitoring System (SINAMOT) in Costa Rica to conduct a tsunami hazard ... -
Evaluation of volume change in rectum and bladder during application of image-guided radiotherapy for prostate carcinoma
(AIP Conference Proceedings, 2016-07-07)All prostate cancer patients from Centro Médico Radioterapia Siglo XXI receive Volumetric Modulated Arc Therapy (VMAT). This therapy uses image-guided radiotherapy (IGRT) with the Cone Beam Computed Tomography (CBCT). This ... -
Experimental validation of gallium production and isotope-dependent positron range correction in PET
(Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment vol.814 110-116 2016, 2016-04-01)Positron range (PR) is one of the important factors that limit the spatial resolution of positron emission tomography (PET) preclinical images. Its blurring effect can be corrected to a large extent if the appropriate ... -
Factores que influyen en la forma de la cola de un tsunami
(UNICIENCIA Vol. 23 65-69, 2009)The propagation speed of a tsunami depends on the depth of the ocean in which it propagates. As the tsunami crosses the abyssal plain, it suffers modifications in its form due to change in the depths of the ocean bottom. ... -
Graphene flakes obtained by local electro-exfoliation of graphite with a STM tip
(Physical Chemistry Chemical Physics vol.11 no.19 8061-8068 2017, 2017-02-24)Graphite surfaces can be manipulated by several methods to create graphene structures of different shapes and sizes. Scanning tunneling microscopy (STM) can be used to create these structures either through mechanical ... -
Hidrography and river plumes in Golfo Dulce, South Pacific of Costa Rica
(Universidad de Costa Rica, 2015-07)Oceanographic variables at 33 stations distributed in Golfo Dulce, Costa Rica, during the dry and rainy seasons between 2009 and 2010, were analyzed with CTD profiles, where salinity, temperature, sigma-T and currents were ... -
Importancia de la batimetría de las planicies abisales en la propagación de tsunamis transoceánicos
(Ciencia y tecnología Vol.25,No.1-2 22-33, 2007)The initial form of a tsunami originated by an homogeneous seismic source consists on a simple wave front. While the tsunami propagates in deep water, this simple form suffers several modifications ... -
Metodología para la Evaluación de Rutas de Evacuación en caso de Tsunami Aplicado a la Costa del Pacífico Norte y Central de Costa Rica
(Revista en Torno a la Prevención no.16 17-26 2016, 2016)Se ha diseñado un método con el objetivo de elaborar una cartografía de rutas de evacuación en caso de tsunami a escala 1:10.000, basado en las directrices establecidas por la Comisión Europea. Las áreas de estudio son las ... -
Modeling a tsunami from the Nicoya, Costa Rica, seismic gap and its potential impact in Puntarenas
(Journal of South American Earth Sciences .Vol.31 No.4 372-382, 2011)Although subduction zones around the world are known to be the source of earthquakes and/or tsunamis, not all segments of these plate boundaries generate destructive earthquakes and catastrophic tsunamis. Costa Rica, in ... -
Multiparticle emission in the decay of Ar 31
(American Physical Society, 2014-06-25)A multihit capacity setup was used to study the decay of the dripline nucleus 31Ar, produced at the ISOLDE facility at CERN. A spectroscopic analysis of the β-delayed three-proton decay of 31Ar is presented for the first ... -
Nations work together to size up Caribbean tsunami hazards
(AGU.ORG, 2018-10-04)El Caribe es conocido por sus playas tropicales y centros de surf, pero no está exento de terremotos y tsunamis. Durante los últimos 500 años, esta región puede haber estado expuesta a aproximadamente 100 tsunamis, de los ... -
Numerical Simulations of the 1991 Limón Tsunami, Costa Rica Caribbean Coast
(Pure and Applied Geophysics vol.174 2945-2959 2017, 2017)The second largest recorded tsunami along the Caribbean margin of Central America occurred 25 years ago. On April 22nd, 1991, an earthquake with magnitude Mw 7.6 ruptured along the thrust faults that form the North Panama ... -
Polycrystalline indium films in the percolation threshold regime: Time correlation between electric conduction and optical properties with film morphology
(IOP Publishing Ltd., 2014-02-21)Polycrystalline indium films have been deposited at room temperature by electron beam evaporation on amorphous quartz substrates. Once deposited, electrical resistance and specular reflection of the films, for wavelengths ... -
Polymer gel dosimeter based on itaconic acid
(2015-11)A new polymeric dosimeter based on itaconic acid and N, N'-methylenebisacrylamide was studied. The preparation method, compositions of monomer and crosslinking agent and the presence of oxygen in the dosimetric system were ...
