Results 21 to 30 of about 24,529 (208)
Refractive errors in children and adolescents in Bucaramanga (Colombia)
The aim of this study was to establish the frequency of refractive errors in children and adolescents aged between 8 and 17 years old, living in the metropolitan area of Bucaramanga (Colombia).This study was a secondary analysis of two descriptive cross-sectional studies that applied sociodemographic surveys and assessed visual acuity and refraction ...
Galvis, Virgilio +5 more
openaire +4 more sources
Introducción. El carcinoma basocelular es el tumor maligno más frecuente de la piel. En los últimos años se ha visto un aumento en su incidencia y, además, un mayor número de casos atípicos. Objetivo.
Claudia Janeth Uribe +6 more
doaj +1 more source
An Integrated Approach to Seismic Event Location: 1. Evaluating How Method of Location Affects the Volume of Groups of Hypocenters [PDF]
When seismic events occur in spatially compact clusters, the volume and geometric characteristics of these clusters often provides information about the relative effectiveness of different location methods, or about physical processes occurring within ...
Frohlich, Clifford A.
core +1 more source
Cálculo y predicción de coeficientes de fugacidad y actividad en mezclas binarias mediante el algoritmo de búsqueda armónica con ancho de banda autoajustable [PDF]
El presente artículo de investigación propone el uso de la nueva variante del algoritmo hs (Harmony Search), esto es, el sfhs (Self-Regulated Fretwidth Harmony Search Algorithm) para el cálculo y predicción de coeficientes de fugacidad y actividad en ...
Amaya, Iván +2 more
core +2 more sources
Se describen dos casos de drenaje venoso pulmonar anómalo parcial del pulmón izquierdo a la vena vertical, la cual drena a su vez a la vena innominada, en dos niños de 6 y 8 años respectivamente.
Gustavo Brochet, MD +6 more
doaj +1 more source
Fibrinolytic therapy in newborns with superior vena cava syndrome. Case report
Introduction: Superior vena cava syndrome is described as the obstruction of blood flow through the superior vena cava. The literature reports that the incidence of this pathology varies from 1 case in every 650 inhabitants and 1 case in every 3 100 ...
Ángela Milena Díaz-Díaz +5 more
doaj +1 more source
Simulation of a biogas cleaning process using different amines
The use of biogas generated in landfills has gained importance in developing countries like Colombia. Taking into account that this biogas presents poor combustion properties that make interchangeability with other combustible gases difficult, the ...
Guillermo Sepúlveda +3 more
doaj +1 more source
Deficiencias en la alimentación tienen un efecto negativo en el aprendizaje en niños en edad escolar. Uno de los nutrientes esenciales en el desarrollo cognitivo es el hierro, dado que tiene diversas funciones en la construcción de estructuras y ...
Balvino Alfonso Barreto Nieto +2 more
doaj +1 more source
Introducción: Los programas de rehabilitación cardiaca promueven cambios de estilo de vida y disminuyen la recurrencia de enfermedad y mortalidad en un 25%.
Juan Carlos Sánchez-Delgado +5 more
doaj +1 more source
Temperature robust PCA based stress monitoring approach [PDF]
In this paper, a guided wave temperature robust PCA-based stress monitoring methodology is proposed. It is based on the analysis of the longitudinal guided wave propagating along the path under stress.
Mujica Delgado, Luis Eduardo +4 more
core +3 more sources

