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Now showing items 31-40 of 111
Ozonesonde Quality Assurance: The JOSIE–SHADOZ (2017) Experience
(2019)
The ozonesonde is a small balloon-borne instrument that is attached to a standard radiosonde to measure profiles of ozone from the surface to 35 km with ∼100-m vertical resolution. Ozonesonde data constitute a mainstay of ...
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 ...
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 ...
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∗ ...
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 ...
Fermi-LAT detection of G118.4+37.0: a supernova remnant in the Galactic halo seen around the Calvera pulsar
(2023)
The discovery of a non-thermal radio ring of low surface brightness about one degree in diameter has been recently reported around the location in the sky of the Calvera pulsar, at a high Galactic latitude. The radio ...
Diseño y simulación de un maniquí para la cuantificación del desempeño de sondas intraoperatorias gamma
(2020-05-28)
La técnica de cirugía radioguiada se basa en la utilización de una sonda detectora de radiaciones para la localización y posterior extracción a través de procedimientos quirúrgicos del tejido enfermo, el cual acumula ...
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 ...