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Tecnología y estudios del futuro: a propósito de un libro de Barker y Erickson
Tecnología y estudios del futuro: a propósito de un libro de Barker y Erickson
(2014-07-07)
Futures Studies are important around the world to predict technological and social changes, as demonstrated with a simple Internet search. Paradoxically, these studies are neither promoted nor relevant in Costa Rica, in ...
Importancia de la batimetría de las planicies basales en la propagación de tsunamis transoceánicos
(2009-04-29)
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 by the tsunami's interaction ...
Estructura hidrográfica de la Bahía de Bluefields, Nicaragua
(2009-04-29)
In March and October of 2000, under the DIPAL II project (Proyecto para el Desarrollo Integral de la Pesca Artesanal en la Región Autónoma del Atlántico Sur), two hydrographic surveys were carried out in the Bay of Bluefields ...
Evaluación y desarrollo de la metacognición en la enseñanza de la química
(2011-07-18)
Metacognition may be defined as the knowledge and regulation of one’s own cognitive system, the capacity to reflect about one’s actions and thoughts. Current views on metacognition pose it as a fundamental factor in achieving ...
La naturaleza del enlace químico 2013 ¡No existe tal cosa llamada orbital!
La naturaleza del enlace químico 2013 ¡No existe tal cosa llamada orbital!
(2013-06-28)
Despite the fact that the chemical bond is a fiction, although convenient and nearly harmless, it plays an enormous role in the thinking, and especially the education, of chemists at all levels. Much further fiction has ...
Variación del estado del mar al paso de las ondas tropicales por el mar Caribe
Variación del estado del mar al paso de las ondas tropicales por el mar Caribe
(2011-02-07)
The Caribean sea is considered as great maritime traffic zone and one of the seas adjacent to Cuba for which the weather forecast everyday are issued. In summer, the tropical wave cross through this region, bringing the ...
Evaluación de la uniformidad intrínseca en gamma cámaras del servicio de medicina nuclear del Hospital San Juan de Dios
(2009-04-29)
The quality assurance program in a Nuclear Medicine Department aims to minimize errors and artifacts that cover all aspects of clinical practice. The quality control can be seen such as one particular procedure used to ...
VISCOUS-FLOW MECHANISM OF #6 FUEL OIL – PALM OLEIN MIXTURES
Viscous-flow mechanism of #6 fuel oilpalm olein mixtures
(2012-11-26)
The viscosities of mixtures of #6 fuel oil and palm olein at 60 °C do not obey Kendall-‐‐Monroe equation. Molecular considerations predict deviation from ideal-‐‐mixture ...
Procesos emisores de fotones en dispersión de electrones
(2011-02-11)
The investigations involving the scattering cross sections arising in virtual and real photon emission processes of electron and positron scattering by an atomic nucleus, have the need for thorough and complete calculations ...
La tierra moler o "diatomita" como sistema de remoción de sustancias químicas en el laboratorio.
(2009-04-29)
Experiments were carried out, to determine the capability of diatomite for the disposal of laboratory residues. Experimentation with different organic solvents (ethyl ether, acetone, ethyl acetate, hexane and ethanol) ...