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Search Results: 1 - 10 of 409670 matches for " Adriana M Osorio "
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Dise o y Evaluación Energética de dos Circuitos de Molienda y Clasificación para un Clinker de Cemento a Escala Piloto Design and Energy Evaluation of two Grinding and Classifier Circuits of a Pilot Scale Cement Clinker
Adriana M Osorio,Juan M Marín,Gloria Restrepo
Información Tecnológica , 2013,
Abstract: Se presentan los resultados del dise o y evaluación de dos sistemas de molienda en circuito cerrado, para un clasificador tipo ciclón neumático y uno tipo harnero vibratorio. Se comparan las eficiencias energéticas bajo similares condiciones de granulometrías a la entrada del molino, conservando el mismo tama o de corte en el clasificador. El material se caracterizó mediante: fluorescencia de rayos X, area superficial por el método Brunauer-Emmet-Teller y análisis granulométrico por tamizado. Los resultados indican que la velocidad de giro del molino no tiene significancia estadística sobre la eficiencia mecánica de molienda. A partir de un análisis de superficies de respuestas se determinó que el ciclón favorece la eficiencia (valor óptimo 30%) comparado con el harnero (valor óptimo 18%). Los modelos encontrados para la determinación de la eficiencia mecánica del sistema molino-ciclón y molino-harnero, muestran correlaciones del 85 y 83 % respectivamente. The design and experimental evaluation of two grinding systems in closed circuit which use two types of classifiers, a pneumatic cyclone and a sieve vibratory, were carried out. The energetic efficiencies under similar conditions in material particle sizes at the mill entrance and keeping the same classifier were compared. The material was characterized by: X-ray fluorescence (XRF), surface area by the method Brunauer-Emmet-Teller and granulometry analysis by sieving. Results show that the mill speed does not have statistical significance over the grinding mechanical efficiency and using a response surface analysis was determined that the cyclone favors the milling (optimum value 30%) against the sieve vibratory type (optimum 18%). Models found for mechanical efficiency determination of the systems mill-cyclone and mill-sieve vibratory, show correlations of 85 % and 83%, respectively.
RELACIóN ENTRE CONDUCTA PARENTAL Y ADHERENCIA AL TRATAMIENTO EN DIABETES INFANTIL.
Mónica María Novoa,Ana María Morales,Adriana Osorio,Rochy Vargas
Revista Colombiana de Psicología , 2008,
Abstract: En este artículo, enmarcado en la psicología de la salud, se pretende identificar la relación que existe entre la conducta parental y la adherencia al tratamiento a partir de un dise o no-experimental de tipo transversal descriptivo correlacional, en una muestra de ni os con diabetes tipo I, entre 8 y 11 a os de edad, con un tiempo desde el diagnóstico de entre uno y tres a os. Los resultados analizados se alan la relación que existe entre los comportamientos que engloba la variable de conducta parental y adherencia al tratamiento, pudiendo incluso diferenciar aquellos comportamientos más representativos para cada categoría; así por ejemplo, se encontró que la comunicación afectiva es el comportamiento parental que más está correlacionado con las conductas de adhesión. Con respecto a las conductas de adhesión al tratamiento, la dieta fue la conducta de este tipo que más se correlacionó con comportamientos parentales.
Sistema de información en tecnología de asistencia para Bogotá D. C.
Ríos Rincón,Adriana María; Ortiz Casta?eda,Diana M.; Pati?o Osorio,Diana M.;
Revista Ciencias de la Salud , 2005,
Abstract: this project has the objective to create a system of information that includes and manages data related to devices of assistive technology available in colombia and its main characteristics; the project is directed to people with disability, their families and professionals in been the rehabilitation area. for the development of this project four phases have settled down: bibliographical revision, gathering of information, development of engineering of the software and amplification of the study at national level. at the moment the project is at the phase ii, during the time of investigation the results obtained have been tools for gathering of information, instructive which explains the correct form for obtaining this tools, home visits to orthopedic facilities, analysis of diverse products and development road of user's way access.
Information System of Assistant Technology in Bogotá
Adriana María Ríos Rincón,Diana M. Ortiz Casta?eda,Diana M. Pati?o Osorio
Revista Ciencias de la Salud , 2005,
Abstract: This project has the objective to create a systemof information that includes and manages datarelated to devices of Assistive Technology availablein Colombia and its main characteristics; the projectis directed to people with disability, their familiesand professionals in been the rehabilitation area.For the development of this project four phases have settled down: Bibliographical revision,Gathering of Information, Development ofEngineering of the Software and Amplification ofthe study at National level.At the moment the project is at the phase II,during the time of investigation the resultsobtained have been tools for gathering ofInformation, Instructive which explains thecorrect form for obtaining this tools, home visitsto orthopedic facilities, analysis of diverseproducts and development road of user’s wayaccess.
Characteristics of Blended Learning Environments: Case Study of a Postgraduate Programme in Los Andes University
Luz Adriana Osorio Gómez
Revista de Universidad y Sociedad del Conocimiento , 2010,
Abstract: Hybrid learning environments combine presential teaching and virtual classrooms, which use information and communication technologies. This definition is based on the desire to combine and bring together two models of teaching-learning: the traditional system of face-to-face learning and the e-learning system, maintaining the possibilities offered by each one. The aim of this article is to present the main results of a study to identify the characteristics of hybrid learning environments, which should be taken into account in their design and development. The research consisted of a case study of a hybrid postgraduate course taught at the University of Los Andes. An analysis was carried out on the set-up of the ten subjects of the course and on the impressions of students and lecturers throughout the programme which ran during the second half of 2006 and the first half of 2007. This approach allowed the identification of a teaching-learning proposal that was very positively rated by the lecturers and students that took part in the process. They all agreed that the learning objectives of the individual subjects and the programme as a whole had been achieved. Data were compiled using qualitative techniques (interviews, observation of physical and virtual classrooms) and quantitative techniques (surveys). The analysis of the results led to the identification of a series of characteristics of the hybrid model which could contribute to the general understanding of blended learning environments.
MOLIENDA DE CLINKER DE CEMENTO: EVALUACIóN DE LA INFLUENCIA DE LA VELOCIDAD DE GIRO DEL MOLINO, EL TIEMPO DE RESIDENCIA Y LA CARGA DE LOS MEDIOS DE MOLIENDA
OSORIO,ADRIANA; RESTREPO,GLORIA; MARíN,JUAN;
DYNA , 2009,
Abstract: in this study, the milling of clinker was evaluated by varying the mill speed (24 and 72 rpm), residence time (3 and 5 hours) and grinding media load (30 and 40 %) in a ball mill. the experiment was designed as a three level factorial statistical model. the main objective was to assess the effect of these parameters on cumulative passing percentage (cpp) and surface area, both of which affect the quality of commercial cement. physico-chemical properties, composition, mineralogy and granulometric distribution were determined using x ray fluorescence, surface area analysis and sieving granulometric analysis. results showed that that cpp through a 325 mesh increases considerably with mill spin speed, that the rate of cpp increase decreases with residence time and that grinding media load changes were not significant. the surface area increased mainly as a function of increases in mill spin speed, while residence time and grinding media load had lesser impacts.
MOLIENDA DE CLINKER DE CEMENTO: EVALUACIóN DE LA INFLUENCIA DE LA VELOCIDAD DE GIRO DEL MOLINO, EL TIEMPO DE RESIDENCIA Y LA CARGA DE LOS MEDIOS DE MOLIENDA
ADRIANA OSORIO,GLORIA RESTREPO,JUAN MARíN
DYNA , 2009,
Abstract: Se evaluó la molienda de clinker en molino de bolas, variando: velocidad del molino (24 y 72 RPM), tiempo de residencia (3 y 5 horas) y carga de cuerpos moledores (30 y 40 %), mediante un modelo factorial, el objetivo fue evaluar la incidencia de estos sobre el porcentaje másico pasante 45 micras y el área superficial, factores determinantes en la calidad del cemento comercial. Se determinaron propiedades fisicoquímicas, de composición, naturaleza mineralógica y distribución granulométrica del material empleando Fluorescencia de Rayos X, Análisis de área Superficial y Análisis Granulométrico por Tamizado. Se encontró que la cantidad de masa pasante de 45 micras crece al aumentar la velocidad del molino y en menor proporción al incrementar el tiempo, y que el cambio de carga de cuerpos moledores resulta insignificante. El área superficial aumenta al incrementarse velocidad, tiempo y carga; no obstante estos últimos en proporción menor que con la velocidad.
A proposal for an evaluation model of pharmaceutical services for malaria
Osorio-de-Castro, Claudia Garcia Serpa;Chaves, Gabriela Costa;Ruiz, Adriana Mendoza;Miranda, Elaine Silva;Campos, M?nica Rodrigues;Suárez-Mútis, Martha Cecília;Freitas, Letícia Figueira;
Cadernos de Saúde Pública , 2009, DOI: 10.1590/S0102-311X2009000900021
Abstract: malaria is a serious public health problem in over 90 countries worldwide. in brazil the disease is prevalent in the amazon and the control rationale is based on early diagnosis and treatment. quality pharmaceutical services are considered a key element for control. a proposal for evaluating pharmaceutical services for malaria is presented here. a theoretical outline composed of a logical model and an indicator framework is discussed and strives to establish a basis for assessment and judgment of the way in which these services are actually delivered. the aim is to contribute to the understanding of pharmaceutical services for malaria and other endemic diseases, complying with the directives of the brazilian national medicines policy.
Carnitina libre y total en sangre de cordón umbilical
Osorio,JH; Pourfarzam,M;
Revista Colombiana de Obstetricia y Ginecología , 2002,
Abstract: abnormal carnitine plasma concentrations have been found in children associated with primary and secondary carnitine deficiency, with decreased concentrations in blood and tissues, as well as elevated levels of the present study is to provide reference values for free and total carnitine from umbilical cord blood, as tool in the early diagnosis of inherited methabolic diseases. 130 cord blood specimens from full-term and normal birth weight children from a colombian population (78 boys and 52 girls) were analyzed by tandem mass spectrometry. no statistical significant difference between sex was found. reference values for free and total carnitine in cord blood of 18.5 ±3.4 μmol/l and 20.9 ±4.2 μmol/l respectively are reported.
Carnitina libre y total en sangre de cordón umbilical Free and total carnitine in umbilical cord blood
JH Osorio,M Pourfarzam
Revista Colombiana de Obstetricia y Ginecología , 2002,
Abstract: Se han encontrado concentraciones anormales de carnitina en ni os asociadas con deficiencias primaria y secundaria de carnitina, con disminución de las concentraciones en sangre y tejidos, así como niveles elevados en algunos errores innatos del metabolismo. El presente estudio tiene como objetivo la obtención de valores de referencia para carnitina libre y total en sangre de cordón umbilical, como herramienta en el diagnóstico temprano de errores innatos del metabolismo. Se analizaron mediante espectrometría de masas en tándem (MS/MS) 130 muestras de sangre de cordón umbilical de nacimientos con embarazos a término y peso normal al nacer (78 ni os y 52 ni as) de una población colombiana. No se encontró diferencia estadísticamente significativa dependiente del sexo del recién nacido. Reportamos valores de referencia para carnitina libre y total en sangre de cordón umbilical de 18,5 ± 3,4 μmol/L y 20,9 ± 4,2 μmol/L respectivamente. Abnormal carnitine plasma concentrations have been found in children associated with primary and secondary carnitine deficiency, with decreased concentrations in blood and tissues, as well as elevated levels of the present study is to provide reference values for free and total carnitine from umbilical cord blood, as tool in the early diagnosis of inherited methabolic diseases. 130 cord blood specimens from full-term and normal birth weight children from a Colombian population (78 boys and 52 girls) were analyzed by tandem mass spectrometry. No statistical significant difference between sex was found. Reference values for free and total carnitine in cord blood of 18.5 ±3.4 μmol/L and 20.9 ±4.2 μmol/L respectively are reported.
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