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Diagnóstico preliminar para la preparación de probetas y pruebas de laboratorio en la caracterización de dislocaciones y precipitaciones en la superaleación Nimonic 80A y Ti3Al con diferentes tratamientos térmicos y ensayados por fatiga de alta frecuencia
(Instituto Tecnológico de Costa Rica, 2015)
En este trabajo se analizaron probetas TEM (Microscopia Electrónica de Transmisión) de materiales usados en aplicaciones aeronáuticas. El principal objetivo de este proyecto es analizar los defectos intercristalinos presentes ...
Reducing warp and checking in 4 by 4 beams from small-diameter tropical species (tectona grandis, gmelina arborea, and cordia alliodora) obtained by turning the pith inside out.
(Forest Products Society, 2015)
Small-diameter logs from plantation trees are prone to warp and to produce checks due to the presence of juvenile wood, growth stresses, and asymmetric shrinkage during the drying process. In the present study, we analyzed ...
Towards a fuzzy logic model for chemical risk assessment by inhalation in laboratories
(Proceedings of the 2015 IEEE 35th Central American and Panama Convention, CONCAPAN 2015, 2015)
This paper presents a computational Fuzzy Logic
Model for chemical hazards risk assessment by inhalation in
laboratories. Some influence factors on chemical risk are
deterministic but not completely measurable. As a ...
Evaluation of biodeterioration and the dynamic modulus of elasticity of wood in ten fast-growing tropical species in costa rica exposed to field testing
(Statny Drevarsky Vyskumny Ustav, 2015)
In tropical regions, it is possible to produce a large variety of timber species in plantation conditions. However, wood from these trees has low natural durability. Biodeterioration and the dynamic modulus of elasticity ...
Producción de oxi-indolalcaloides de Uncaria tomentosa in vitro y estudio del efecto citotóxico en líneas celulares de cáncer
(Instituto Tecnológico de Costa Rica, 2015)
Uncaria tomentosa (Willd.) D.C (Uña de Gato), es una planta de la familia Rubiaceae, se
caracteriza por la producción de diferentes metabolitos secundarios de interés farmacológico e
industrial. Los oxi-indol alcaloides ...
Inventarios de gases de efecto invernadero de las escuelas primarias de Belén, Heredia, Costa Rica Greenhouse gases produced by primary schools in Belén, Heredia, Costa Rica
(Cuadernos de Investigación UNED, 2015)
There is no published information on
greenhouse gas emision in public schools of Costa Rica. Using as reference
the national voluntary standard INTE / ISO 12-01-06: 2011 I measured
emissions in three primary schools: ...
Guidelines for documenting and reporting tree allometric equations
(Springer-Verlag France, 2015-09)
Given the pressing need to quantify carbon fluxes associated with terrestrial vegetation dynamics, an increasing number of researchers have sought to improve estimates of tree volume, biomass, and carbon stocks. Tree ...
A Parallel Framework with Block Matrices of a Discrete Fourier Transform for Vector-Valued Discrete-Time Signals
(Hindawi Publishing Corporation, 2015)
This paper presents a parallel implementation of a kind of discrete Fourier transform (DFT): the vector-valued DFT. The vector-valued DFT is a novel tool to analyze the spectra of vector-valued discrete-time signals. This ...
Citrus huanglongbing associated with ‘Candidatus liberibacter asiaticus’ present in the northern region of Costa Rica but has not been detected in other citrus-growing areas
(American Phytopathological Society, 2015-12)
Since 2011, citrus Huanglongbing (HLB, ex-greening) disease has been detected in Los Chiles, Costa Rica, close to the Nicaraguan border, by the State Phytosanitary Service (Servicio Fitosanitario del Estado; SFE) and by ...
Evaluación del riesgo sísmico de las edificaciones en la ciudad de Cartago
(Instituto Tecnológico de Costa Rica, 2015-05)
Se realizó una evaluación de los daños que pueden ocurrir en las edificaciones ubicadas en los
distritos occidental y oriental del cantón central de Cartago ante la ocurrencia de un sismo fuerte. Del
historial sísmico ...