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Search Results: 1 - 10 of 11228 matches for " Mauricio Rudolph Rojas "
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Valoración digital de índices de atenuación radiológica de estructuras anatómicas normales y materiales dentales observables en imágenes panorámicas
López-Videla Monta?o,Gianna; Rudolph Rojas,Mauricio; Guzmán Zuluaga,Carmen Lucía;
Revista Facultad de Odontología Universidad de Antioquia , 2009,
Abstract: introduction: the fast technological development applied to medical digital images has opened a new dimension in the qualitative and quantitative assesment of dental and skeletal components, as well as treatment control when biomaterials are used. the knowledge of the mathematical standard profiles and biomaterials used allows the detection of structural alterations such as pathology and dental materials failures. methods: direct digital panoramic images were taken and the numerical absoprtion value of anatomical structures and dental materials most commonly seen in panoramic images were analyzed. results and conclusions: the gray tone scale varied from 0 to 255, corresponding to the value of the tones of pixels observable and dependent on electric current in digital radiographic technology applied to maxillofacial area.
Valoración digital de índices de atenuación radiológica de estructuras anatómicas normales y materiales dentales observables en imágenes panorámicas Digital valuation of radiologic attenuation indexes of normal anatomical structures and dental materials observed in panoramic images
Gianna López-Videla Monta?o,Mauricio Rudolph Rojas,Carmen Lucía Guzmán Zuluaga
Revista Facultad de Odontología Universidad de Antioquia , 2009,
Abstract: INTRODUCCIóN: el desarrollo tecnológico vertiginoso, aplicado al diagnóstico mediante imágenes radiológicas digitales ha abierto una nueva dimensión en la valoración cualitativa y cuantitativa de los componentes esqueléticos y dentales así como también en la verificación y control de tratamientos con materiales biocompatibles. El conocimiento del perfil matemático estándar de las estructuras naturales y los materiales biodentales utilizados, permite la detección de alteraciones estructurales ya sea por patologías como también fallas en los materiales utilizados en la reparación de los da os odontológicos más comunes. MéTODOS: mediante radiología digital directa (RDD), se analizó el perfil de valor numérico de atenuación de estructuras anatómicas y materiales dentales más comúnmente manifiestos en imágenes panorámicas. RESULTADOS Y CONCLUSIONES: la escala tonal de grises varío desde el 0 hasta el 255, valores correspondientes a los tonos de píxeles posiblemente observables y dependientes de la corriente eléctrica en tecnología digital de aplicación en el área maxilofacial. INTRODUCTION: the fast technological development applied to medical digital images has opened a new dimension in the qualitative and quantitative assesment of dental and skeletal components, as well as treatment control when biomaterials are used. The knowledge of the Mathematical Standard Profiles and biomaterials used allows the detection of structural alterations such as pathology and dental materials failures. METHODS: direct digital panoramic images were taken and the numerical absoprtion value of anatomical structures and dental materials most commonly seen in panoramic images were analyzed. RESULTS AND CONCLUSIONS: the gray tone scale varied from 0 to 255, corresponding to the value of the tones of pixels observable and dependent on electric current in Digital radiographic technology applied to maxillofacial area.
Prevalencia de variables anatómicas en el recorrido de los conductos mandibulares: Estudio mediante tecnología Cone Beam
López-Videla Monta?o,Jorge; Vergara Miranda,Martín; Rudolph Rojas,Mauricio; Guzmán Zuluaga,Carmen Lucía;
Revista Facultad de Odontología Universidad de Antioquia , 2010,
Abstract: introduction: the purpose of this study was to evaluate the presence of a bifid mandibular canal variable (bmcv), by subject and by side. it was distributed by type, as classified by naitoh, hiraiwa, aimiya and ariji, adding the triple canal type. it was also associated with gender and the bmcv observation was compared with the panoramic view and the sagittal and coronal cone beam system. methods: a random sample of 84 subjects (52 women, 32 men) between 12 and 80 years of age was analyzed; it was conducted between 2008 and 2009 at the maxillo facial radiology systems center of santiago de chile. volumetric acquisitions were made by ct, cone beam system, using siemens sirona equipment, model galileos comfort. patients were classified by age and gender. we performed a qualitative and quantitative analysis both marking the path of the mandibular canal; bmcv was classified according to the classification of naitoh, hiraiwa, aimiya and ariji. the presence of bmcv was observed and compared between panoramic, and the sagittal and coronal slices. results: 69% of the sample of the study showed at least one variation in the trajectory of the inferior dental canal. the variable of the trajectory of the dental canal which showed the highest frequency was the one classified as anterior elongation with confluence (39.28%) and, in second place the variable known as retromolar canal (23.80%). there was a statistical significant difference when the sagittal slices were compared with the coronal slices of the volumetric study through high resolution tomography in relation with the panoramic reconstruction, which suggests that the panoramic images are not sufficient to look for variables in the trajectory of the inferior dental canal. as it relates to gender, it was found that there was a statistically significant difference (p = 0.02) for the variable classified as lingual canal. conclusions: cone beam system is critical to search the high frequency of bmcv, improving the diagnosis
Prevalencia de variables anatómicas en el recorrido de los conductos mandibulares: Estudio mediante tecnología Cone Beam Prevalence of anatomical variables in mandibular canal anatomy: Study using Cone Beam technology
Jorge López-Videla Monta?o,Martín Vergara Miranda,Mauricio Rudolph Rojas,Carmen Lucía Guzmán Zuluaga
Revista Facultad de Odontología Universidad de Antioquia , 2010,
Abstract: INTRODUCCIóN: el objetivo de este estudio fue investigar la presencia de la variable canal mandibular bífido (VCMB), por sujeto y por lado. Se distribuyó por tipo, según la clasificación de Naitoh, Hiraiwa, Aimiya y Ariji, agregándose el tipo canal triple. Se asoció con el género y se comparó la observación de la VCMB entre la vista panorámica y los cortes sagitales y coronales del sistema Cone Beam. MéTODOS: se analizó una muestra aleatoria de 84 sujetos (52 mujeres, 32 hombres), entre doce y ochenta a os, conducido entre los a os 2008 y 2009 en el Centro Sistemas Radiológicos Máxilo Faciales de Santiago de Chile. Se efectuaron adquisiciones volumétricas por medio de TC, sistema Cone Beam, utilizando un equipo Siemens Sirona, modelo Galileos Comfort. Se clasificaron los pacientes por edad y sexo. Se realizó un análisis cualitativo y cuantitativo marcando recorrido de ambos conductos dentarios inferiores. Se clasifica la VCMB de acuerdo con la propuesta de los autores, Naitoh, Hiraiwa, Aimiya y Ariji y canal triple. Se observó y comparó la presencia de la VCMB entre vista panorámica y cortes sagitales y coronales. RESULTADOS: el 69% de la muestra considerada en el estudio presentó al menos una variación en el trayecto del conducto dentario inferior. La variable del recorrido del conducto dentario que presentó mayor frecuencia fue la clasificada como prolongación anterior con confluencia (39,28%) y en segundo lugar la variable clasificada como canal retromolar (23,80%). Se encontró una diferencia estadísticamente significativa al comparar los cortes sagitales y coronales del estudio volumétrico mediante tomografía de alta resolución con relación a la reconstrucción panorámica, lo que sugiere que las imágenes panorámicas son insuficientes para la investigación de variables en el recorrido del conducto dentario inferior. En relación con el sexo, se encontró que existe diferencia estadísticamente significativa (p = 0,02) en la variable clasificada como canal lingual. CONCLUSIONES: el sistema Cone Beam es fundamental para investigar la alta frecuencia VCMB, mejorando el diagnóstico y pronóstico de procedimientos clínicos y quirúrgicos del área retromolar y posterior del cuerpo mandibular. INTRODUCTION: the purpose of this study was to evaluate the presence of a bifid mandibular canal variable (BMCV), by subject and by side. It was distributed by type, as classified by Naitoh, Hiraiwa, Aimiya and Ariji, adding the triple canal type. It was also associated with gender and the BMCV observation was compared with the panoramic view and the sagittal and coronal Con
No el abogado, "mejor el doctor": La imagen social del profesional en derecho
Rojas,Mauricio;
Estudios Socio-Jurídicos , 2009,
Abstract: the professions have images which are part of their social representations. this article shows the results of research into the social value of the legal profession and legal professional, as applied in the general population. the social devaluation of crucial subjects, in the exercise of the profession stands out: ethics, solidarity, honesty and humility. these are ambiguous situations because professionals enjoy great prestige. their success (and even their attire) indicate a essential elements of their professional status which constitute a natural framework of meaning by which they demonstrate the ostentation of the power of their profession to control people's lives. university formation must be more effective and relate to the social and personal situations that must face the professional in a complex and competitive labour market.
LA ACTITUD ESTUDIANTIL SOBRE LA INVESTIGACIóN EN LA UNIVERSIDAD
Rojas Betancur,Mauricio;
Investigación y Desarrollo , 2010,
Abstract: this article presents the opinions, situations and perceptions of the young student appear on the investigation in six institutions of education superior and the way in which they perceive the scientific subject from the construction of attitude scales. problems of formation and retention of new investigators, significant bonds stand out teaching-investigation, ignorance and distrust in the university systems and little knowledge on the scientific activities of the institutions. one was, in resistance, discharge predisposition towards the scientific subject and the necessity to transform the universities for a more coherent professional formation with the needs of the social development.
ENTRE LA LEGITIMIDAD Y LA CRIMINALIDAD: EL CASO DEL "APARAGUAYAMIENTO" EN CONCEPCIóN, 1800-1850
Rojas,Mauricio F;
Historia (Santiago) , 2007, DOI: 10.4067/S0717-71942007000200006
Abstract: certain social behaviors of marginalized social groups were considered illegal by the elites during the first half of the nineteenth century. in this way, it is possible to observe the emergence of a behavior that became considered criminal based on some actions that were usually seen as valid or lawful before. this study aims to demonstrate how the so-called 'aparaguayamiento' would correspond to one of these atavistic behaviors in social groups comprised by mainly peasants. we consider that this type of practice, during the time stated, was punished as cattle theft by the judicial system. as a result of this confrontation, a dialectics was established between traditional styles of living of popular groups and behaviors imposed by the hegemonic groups through law. thus, the dialectics between criminality and legality was established
Rese a de "La hybris del punto cero. Ciencia, raza e ilustración en la Nueva Granada (1750-1816)" de Santiago Castro Gómez
Mauricio Pardo Rojas
Tabula Rasa , 2006,
Abstract:
El construir andando de Vasco
Mauricio Pardo Rojas
Tabula Rasa , 2007,
Abstract:
ENTRE LA LEGITIMIDAD Y LA CRIMINALIDAD: EL CASO DEL "APARAGUAYAMIENTO" EN CONCEPCIóN, 1800-1850
Mauricio F Rojas
Historia (Santiago) , 2007,
Abstract: En la primera mitad del siglo XIX, en la Provincia de Concepción (Chile), ciertos comportamientos sociales de sectores subalternos fueron apreciados por las elites gobernantes como fuera de la ley. De esta forma, es posible observar la construcción de una conducta denominada criminal sobre la base de algunas acciones que tradicionalmente eran consideradas por la población como válidas o legítimas. En este estudio, se pretende demostrar como el "aparaguayamiento" correspondería a una de esas conductas atávicas, en sectores populares de predominancia campesina. Consideramos que esta práctica, en el transcurso del período de tiempo indicado, fue criminalizada por el aparato judicial como abigeato. Producto de esta confrontación se estructura una dialéctica entre los modos tradicionales de existencia de los sectores populares y los comportamientos impuestos por los grupos hegemónicos, a través de la ley. Se conforma, así, la dialéctica entre criminalidad y legitimidad Certain social behaviors of marginalized social groups were considered illegal by the elites during the first half of the nineteenth century. In this way, it is possible to observe the emergence of a behavior that became considered criminal based on some actions that were usually seen as valid or lawful before. This study aims to demonstrate how the so-called 'aparaguayamiento' would correspond to one of these atavistic behaviors in social groups comprised by mainly peasants. We consider that this type of practice, during the time stated, was punished as cattle theft by the judicial system. As a result of this confrontation, a dialectics was established between traditional styles of living of popular groups and behaviors imposed by the hegemonic groups through law. Thus, the dialectics between criminality and legality was established
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