Análisis de validez de constructo y confiabilidad de dos instrumentos para evaluar las actividades de orientación profesiográfica

An analysis of the construct validity and reliability of a questionnaire to evaluate a professions day, as well as a rubric to evaluate the career exhibitions were carried out. The analysis of construct validity was carried out by an exploratory factor analysis and reliability through Cronbach's alpha. The questionnaire showed that only 53% of its items had significant factorial loads (CF>0.65), which were represented in three dimensions (Degree of satisfaction with the characteristics of the career, Degree of satisfaction with the faculty and Recommendation of FIME and the career) of the five we initially proposed. For the rubric, the results corresponded to what we theoretically proposed. The reliability of both instruments was adequate (Cronbach's Alpha: 0.907 and 0.908). We can conclude that the analysis allowed us to refine and improve the instruments; however, the limitation of the present study relates to the sample size, leading to results that cannot be considered as conclusive ones. Implications of the study for career guidance are provided.Se realizó un análisis de la validez de constructo y confiabilidad de un cuestionario para evaluar una jornada profesiográfica y una rúbrica para evaluar la exposición de las carreras. El análisis de validez de constructo se efectuó mediante un análisis factorial exploratorio y la confiabilidad mediante el Alfa de Cronbach. Para el cuestionario, el análisis mostró que solo el 53% de sus ítems presentaron cargas factoriales significativas (CF>0.65), los cuales estuvieron representados en tres dimensiones (Grado de satisfacción con las características de la carrera, Grado de satisfacción con la facultad y Recomendación de la FIME3 y de la carrera) de las cinco que se propusieron de manera inicial. Para la rúbrica, los resultados se correspondieron con lo propuesto teóricamente. La confiabilidad de ambos instrumentos fue adecuada (Alfa de Cronbach de 0.907 y 0.908). Se puede concluir que el análisis efectuado favoreció la depuración de los instrumentos; sin embargo, la limitación del presente estudio fue el tamaño de muestra por lo que los resultados no pueden ser considerados concluyentes. Se aportan implicaciones del estudio para la orientación profesional

Geochemistry and Geochronology of the Guajira Eclogites, northern Colombia : evidence of a metamorphosed primitive Cretaceous Caribbean Island-arc

The chemical composition of eclogites, found as boulders in a Tertiary conglomerate from the Guajira Peninsula, Colombia suggests that these rocks are mainly metamorphosed basaltic andesites. They are depleted in LILE elements compared to MORB, have a negative Nb-anomaly and flat to enriched REE patterns, suggesting that their protoliths evolved in a subduction related tectonic setting. They show island-arc affinities and are similar to primitive islandarc rocks described in the Caribbean. The geochemical characteristics are comparable to low-grade greenschists from the nearby Etpana Terrane, which are interpreted as part of a Cretaceous intra-oceanic arc. These data support evidence that the eclogites and the Etpana terrane rocks formed from the same volcano-sedimentary sequence. Part of this sequence was accreted onto the margin and another was incorporated into the subduction channel and metamorphosed at eclogite facies conditions. 40Ar-39Ar ages of 79.2±1.1Ma and 82.2±2.5Ma determined on white micas, separated from two eclogite samples, are interpreted to be related to the cooling of the main metamorphic event. The formation of a common volcano-sedimentary protolith and subsequent metamorphism of these units record the ongoing Late Cretaceous continental subduction of the South American margin within the Caribbean intra-oceanic arc subduction zone. This gave way to an arc-continent collision between the Caribbean and the South American plates, where this sequence was exhumed after the Campanian

Contaminación del agua por plaguicidas en un área de antioquia

Objetivo Determinar la frecuencia de uso de plaguicidas en la producción agropecuaria, porcícola y avícola, para comprender su influencia en el recurso hídrico en la vereda Monterredondo del municipio San Pedro de los Milagros (Antioquia) y establecer un diagnostico de su calidad. Métodos Se aplicó una encuesta domiciliaria al 100 % de las familias de la vereda, sobre el uso de productos químicos y se realizaron dos análisis, el fisicoquímico y el microbiológico a tres muestras de agua en el laboratorio de Ingeniería Ambiental de la Universidad de Antioquia bajo métodos estandarizados. Resultados La quebrada El Hato presenta una contaminación por Coliformes de 1 600x103 NMP/100ml y por E.coli de 220x10 NMP/100ml. La quebrada Fray Juana presenta un grado de contaminación de 1 600x103 NMP/100ml de Coliformes. Se encontró igualmente una contaminación de las fuentes hídricas por el uso de diversos plaguicidas como: Lorsban® (Clorpirifos), Ráfaga® (Clorpirifos), Látigo® (Clorpirifos), Neguvón® (Metrifonato), Furadán® (Carbofurán). Con insecticidas como, Ganabaño® (Cibermetrina) y desinfectantes como, Límpido® (Hipoclorito de sodio 6 %). Conclusión La producción agropecuaria, porcícola y avícola en la vereda, está generando impactos negativos en el recurso hídrico, por la disminución y la contaminación de éste. Las aguas de las muestras analizadas, no son aptas para el consumo de seres vivos

Oclusão e hábitos bucais em crianças de 5 a 12 anos de uma instituição educativa de Medellín, 2012

Introduction: This study aimed to determine the prevalence of occlusion abnormalities and their relation to oral habits at an educational institution. Methods: cross-sectional study involving 217 schoolchildren at the Camino de Paz school (Llanaditas, Comuna 8, Medellin). Using clinical examinations, socio-demographic variables were collected along with occlusion-related variables, occlusal relationship type (angle), the presence of diverset oral habits, a description of the frequencies and calculation of the prevalence ratios (pr), with confidence intervals of 95% (95% ci) by gender. Results: The study population contained a greater proportion of class i, except in the group of 11-12 year-olds (class ii). In more than half, their dental midlines do not match. Nearly one quarter of the boys and 15% of the girls had deep anterior bite; other abnormalities accounted for less than 10%. The most common oral habits in the children were onychophagia, putting objects in their mouths and lip-biting. There were differences in oral habits according to the molar relationship and gender. Conclusions: There is an association between occlusion alterations and the presence of oral habits, according to gender, which requires further analysis to establish causal relationships.Introducción: este estudio tuvo como objetivo determinar la prevalencia de alteraciones de la oclusión y su relación con hábitos bucales en una institución educativa. Métodos: estudio transversal en 217 escolares de la Institución Educativa Camino de Paz; sede Llanaditas (Comuna 8; Medellín). Mediante examen clínico se recogieron variables sociodemográficas; variables relacionadas con la oclusión; tipo de relación oclusal (Angle); presencia de diferentes hábitos bucales; descripción de frecuencias y cálculo de razones de prevalencia (rp) con sus intervalos de confianza al 95% (ic95%); según el sexo. Resultados: en la población estudiada existe mayor proporción de clase i; exceptuando en el grupo de 11 a 12 años (clase ii). En la mitad o más sus líneas medias no coinciden. Casi una cuarta parte de los niños y el 15% de las niñas presentaron mordida profunda anterior; y el resto de alteraciones no sobrepasa el 10%. Los hábitos que se presentaron con mayor frecuencia en niños y niñas fueron: onicofagia; interposición de objetos y queilofagia. Se presentaron diferencias en los hábitos bucales; de acuerdo con la relación molar y el sexo. Conclusiones: existe una asociación entre las alteraciones de la oclusión y los hábitos orales; según el sexo; que requieren un mayor análisis para establecer relaciones causales.Introdução:este estudo teve como objetivo determinar a prevalência de alterações da oclusão e sua relação com hábitos bucais em uma instituição educativa.   Métodos: estudo transversal com 217 crianças em idade escolar da Instituição Educativa Camino de Paz, sede Llanaditas (Comunidade 8, Medellín). Mediante exame clínico, coletaram-se variáveis sociodemográficas, variáveis relacionadas com a oclusão, tipo de relação oclusal (Angle), presença de diferentes hábitos bucais, descrição de frequências e cálculo de razões de prevalência (rp) com seus intervalos de confiança a 95% (ic95%), segundo o sexo.   Resultados: napopulação estudada, existe uma maior proporção de tipo i, excetuando no grupo de 11 a 12 anos (tipoii). Na metade ou mais, suas linhas médias não coincidem. Quase um quarto das crianças e 15% das meninas apresentaram mordida profunda anterior, e o restante de alterações não ultrapassa 10%. Os hábitos que se apresentaram com maior frequência em meninos e meninas foram: onicofagia, interposição de objetos e queilofagia. Apresentaram-se diferenças nos hábitos bucais, de acordo com a relação molar e o sexo.   Conclusões: existe uma associação entre as alterações da oclusão e os hábitos orais, segundo o sexo, que requerem uma maior análise para estabelecer relações causais

Clinical Practice: Giant Cell Tumour of the Jaw Mimicking Bone Malignancy on Three-Dimensional Computed Tomography (3D CT) Reconstruction

A wide range of diseases may present with radiographic features of osteolysis. Periapical inflammation, cysts and benign tumours, bone malignancies, all of these conditions may show bone resorption on radiograph. Features of the surrounding bone, margins of the lesion, and biological behaviour including tendency to infiltration and root resorption, may represent important criteria for distinguishing benign tumours from their malign counterpart, although the radiographic aspect of the lesion is not always predictive. Therefore a critical differential diagnosis has to be reached to choose the best management. Here, we report a case of giant cell tumour (GCT) whose radiological features by computed tomography (CT) suggested the presence of bone malignancy, whereas the evaluation of a routine OPT scan comforted us about the benign nature of the lesion. A brief review of the literature on such a benign but locally aggressive neoplasm is also provided

Clinical Practice: Giant Cell Tumour of the Jaw Mimicking Bone Malignancy on Three-Dimensional Computed Tomography (3D CT) Reconstruction

A wide range of diseases may present with radiographic features of osteolysis. Periapical inflammation, cysts and benign tumours, bone malignancies, all of these conditions may show bone resorption on radiograph. Features of the surrounding bone, margins of the lesion, and biological behaviour including tendency to infiltration and root resorption, may represent important criteria for distinguishing benign tumours from their malign counterpart, although the radiographic aspect of the lesion is not always predictive. Therefore a critical differential diagnosis has to be reached to choose the best management. Here, we report a case of giant cell tumour (GCT) whose radiological features by computed tomography (CT) suggested the presence of bone malignancy, whereas the evaluation of a routine OPT scan comforted us about the benign nature of the lesion. A brief review of the literature on such a benign but locally aggressive neoplasm is also provided