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Mostrando ítems 11-20 de 53
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 ...
Electronic structure of silicon-based nanostructures
(2007-08-30)
We have developed a unifying tight-binding Hamiltonian that can account for the electronic properties of recently proposed Si-based nanostructures, namely, Si graphene-like sheets and Si nanotubes. We considered the sp3s∗ ...
Improvement of early detection of breast cancer through collaborative multi-country efforts: Medical physics component
(2018)
Purpose: The International Atomic Energy Agency (IAEA) through a Coordinated Research Project on “Enhancing
Capacity for Early Detection and Diagnosis of Breast Cancer through Imaging”, brought together a group of mammography ...
Tropical precipitation anomalies and d‐excess evolution during El Niño 2014‐16
(2016)
The last 2014-16 El Niño event was among the three strongest episodes on record. El Niño considerably changes annual and seasonal precipitation across the tropics. Here, we present a unique stable isotope data set of daily ...
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 ...
Random Electric Field Instabilities of Relaxor Ferroelectrics
(2017-06-13)
Relaxor ferroelectrics are complex oxide materials which are rather unique to study the effects of compositional disorder on phase transitions. Here, we study the effects of quenched cubic random electric fields on the ...
Física y Poesía: T.S. Eliot
(1992)
Tres poemas de T.S. ELIOT, publicados en 1989, sugieren que el autor tenía conocimientos tanto de física clásica como de física moderna.
En este artículo se describen los conceptos físicos tratados y se hace referencia ...
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 ...
Large isotropic negative thermal expansion above a structural quantum phase transition
(2015-10-01)
Perovskite structured materials contain myriad tunable ordered phases of electronic and magnetic origin with proven technological importance and strong promise for a variety of energy solutions. An always-contributing ...
QA Programme of the TLD laboratory of the University of Costa Rica: IEC 61066 testing
(2008)
The Thermoluminescence Personal Dosimetry Laboratory of the University of Costa Rica provides dose measurements for around 90% of occupational radiation workers in the country. The assessment of doses to workers routinely ...