Universidad Nacional de Rosario: e-Universitas UNR Journal
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13 • PRÁCTICAS PEDAGÓGICAS ORIENTADAS A LOS PROBLEMAS DE ENSEÑANZA - APRENDIZAJE QUE DESARROLLAN LOS DOCENTES DE LA FACULTAD DE ODONTOLOGÍA DE ROSARIO
No full textThis research paper looks into the teaching-learning process in the School of Dentistry of Rosario University, through an opinion survey carried out among the professors and students from different courses. The teaching methodology, the didactic actions, the didactic resources, the colaborative work and the rol of the students in class, the pedagogical interventions and the knowledge acquisition were related with a pedagogical model supported by professors using both, the totality of the answers given by the students in a specially designed questionnaire and their class observations. The general results proved that the teaching model preferred by professors was the behaviourist model, even though professors claim that this model is constructivist. The other variables also coincided with the behaviourist model. In relation with their own practices with the students and other professors from the same course, an assessment of pedagogical participations of the professors was carried out. This showed that the evaluations were done by approximately half the professors. These findings enable us to think about the teaching-learning problems in our School and also to redefine our work along to axes: the conceptual and the attitude –procedural, with the purpose of improving qualitatively and quantitatively the different aspects of the new profile of the “School Hospital” proposed by the School.Esta investigación indaga la problemática de la enseñanza-aprendizaje en la Facultad de Odontología de Rosario, a través de la opinión de los docentes y alumnos de los distintos cursos.Utilizando la totalidad de respuesta a un cuestionario específicamente diseñado y de observaciones de clase, se intentó relacionar metodología de enseñanza, acciones didácticas, recursos didácticos, trabajo colaborativo y rol del alumno en clase, intervenciones pedagógicas, apropiación del saber, con el modelo pedagógico al que adhieren los docentes.Los resultados generales permitieron comprobar que el patrón del modelo al que adhieren los docentes es el conductivista, aunque los docentes manifiestan que es el constructivista. Las demás variables también concordaron con el modelo conductivista.Se identificó además la evaluación de las intervenciones pedagógicas de los docentes, en relación a las propias prácticas, con sus alumnos y compañeros de cátedra, encontrándose que las mismas son efectuadas por aproximadamente la mitad de los docentes.Estos hallazgos permiten reflexionar sobre la problemática del enseñar-aprender en la Institución y asimismo redefinir el trabajo sobre dos ejes: el conceptual y el procedimental-actitudinal, con el propósito de mejorar cualitativa y cuantitativamente diversos aspectos a la luz del nuevo perfil de “Hospital Escuela” propuesta para la Facultad de Odontología.Recibido: Feb.2010 | Aceptado: May.2010Para citar este artículo:Espejo, Teresa. Prácticas pedagógicas orientadas a los problemas de enseñanza-aprendizaje que desarrollan los docentes de la Facultad de Odontología de Rosario. e-Universitas UNR Journal [Online], Volumen 2 Número 4 [junio 2010]. Disponible en: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/36. ISSN 1666-6143. PEDAGOGIC PRACTICES ORIENTATED TO THE PROBLEMS OF EDUCATION - LEARNING EVELOPED BY TEACHERS OF F. O. R. Abstract This research paper looks into the teaching-learning process in the School of Dentistry of Rosario University, through an opinion survey carried out among the professors and students from different courses.The teaching methodology, the didactic actions, the didactic resources, the colaborative work and the rol of the students in class, the pedagogical interventions and the knowledge acquisition were related with a pedagogical model supported by professors using both, the totality of the answers given by the students in a specially designed questionnaire and their class observations.The general results proved that the teaching model preferred by professors was the behaviourist model, even though professors claim that this model is constructivist. The other variables also coincided with the behaviourist model.In relation with their own practices with the students and other professors from the same course, an assessment of pedagogical participations of the professors was carried out. This showed that the evaluations were done by approximately half the professors.These findings enable us to think about the teaching-learning problems in our School and also to redefine our work along to axes: the conceptual and the attitude –procedural, with the purpose of improving qualitatively and quantitatively the different aspects of the new profile of the “School Hospital” proposed by the School.Received: Feb.2010 | Accepted: May.2010To cite this article:Espejo, Teresa. Pedagogic practices orientated to the problems of education - learning eveloped by teachers of F.O.R. e-Universitas UNR Journal [Online], Volumen 2 Número 4 [junio 2010]. Available in: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/36. ISSN 1666-6143
14 • Agresiones de perros a personas.
No full textDevelopment and urbanization have brought about various changes and modalities in man/animal relationship. The interest in the study of this new relationship and its consequences is growing. . A descriptive epidemiological study of people with canine bite injuries was carried out from 2006 to 2008 in Arequito, Santa Fe, Argentina. A hundred and five injured people were interviewed -67% were adults, 21% children and 12% teenagers. Eighty-four percent of the lesions were located in the limbs, especially the lower ones (67%). The most common sites of attacks were public, 75%, and 46% of the attacks were caused by known dogs. Sixty-seven percent of biters were male. Aggressions were mostly from adult animals (83%), in general through chase associated with predation (48%). Thirty-six percent of animals had history of attacks to people. A typical victim is an adult male with lesions in lower limbs caused in streets by adult, medium-size male mongrels. No fatal victims were recorded but the severity of attacks was established by those children with facial lesions that required suture.El desarrollo y la urbanización han traído consigo innumerables cambios y modalidades en el vínculo hombre/animal. Es creciente el interés por el estudio de esta convivencia y sus consecuencias.Se realizó un estudio epidemiológico descriptivo de las personas con lesiones por mordeduras de perros durante los años 2006, 2007 y 2008 en Arequito, Santa Fe, Argentina.Se encuestaron 105 personas afectadas. El 67 % de las víctimas fueron adultos, el 21 % niños y el 12% adolescentes. El 84 % de las lesiones producidas se ubicó en los miembros, con predominio de los inferiores (67%) El lugar más común de ocurrencia de los hechos (75 %) fue la vía pública y en el 46% de los ataques se identificó a perros conocidos. El 67% de los mordedores eran machos. Las agresiones fueron cometidas principalmente por animales adultos (83%), en general por persecución asociada a depredación (48%). Un 36% de los animales tenían antecedentes de ataques a personas.La víctima típica es varón adulto con lesiones en miembros inferiores, producidas en la calle por perro macho, mestizo, adulto y mediano. Sin víctimas fatales, hay indicios de gravedad por la existencia de niños con lesiones faciales que requirieron sutura.Recibido: May.2010 | Aceptado: Ago.2010Para citar este artículo:Alfieri, Arsenio. Agresiones de perros a personas. e-Universitas UNR Journal [Online], Volumen 3 Número 5 [octubre 2010]. Disponible en http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/40. ISSN 1666-6143
11 • EN EL OJO DE LA TORMENTA: EMPRESAS RECUPERADAS Y ESTRATEGIAS POLÍTICO-PARTIDARIAS.
No full textOur work puts forward some guidelines to understand the level of social conflict in the companies taken over by workers. By “level of conflict” we mean troublesome situations which cannot be characterized either as endogenous or exogenous without falling into a reductionism, since this would prevent us from grasping the complexity involved in the sociopolitical network of relationships within these companies.In particular, we emphasize the role of “post-neoliberal” state public policies and, at the same time, the action of the different movements grouping them, marked, as they are, with political and party goals, which brings about both fragmentation and anxiety to the worker groups and hinders their view of feasible efficient options.Nuestro trabajo propone algunos ejes de reflexión sobre la conflictividad social en las empresas recuperadas por los trabajadores. Con el término conflictividad aludimos a situaciones problemáticas que no pueden ser caracterizadas como endógenas o exógenas sin caer en reduccionismos que impiden captar la complejidad de la trama de relaciones sociales/políticas en dichas empresas.En particular, ponemos énfasis en el papel de las Políticas Públicas Estatales “post-neoliberales’’ y al mismo tiempo a la acción de los distintos movimientos que las agrupan, atravesados por objetivos político-partidarios que produce fragmentación en los colectivos de trabajadores y provoca zozobra en los mismos, dificultándoles entrever o visualizar alternativas viables y eficaces.Recibido: Feb.2009 | Aceptado: Oct.2009Para citar este artículo:Lagiu, Efimia; Solero, Carlos; Tavella, Mirta; Valentino, Norma. En el ojo de la tormenta: empresas recuperadas y estrategias político-partidarias. e-Universitas UNR Journal [Online], Volumen 1 Número 3 [octubre 2009]. Disponible en: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/21. ISSN 1666-6143.AbstractOur work puts forward some guidelines to understand the level of social conflict in the companies taken over by workers. By “level of conflict” we mean troublesome situations which cannot be characterized either as endogenous or exogenous without falling into a reductionism, since this would prevent us from grasping the complexity involved in the sociopolitical network of relationships within these companies.In particular, we emphasize the role of “post-neoliberal” state public policies and, at the same time, the action of the different movements grouping them, marked, as they are, with political and party goals, which brings about both fragmentation and anxiety to the worker groups and hinders their view of feasible efficient options.Received: Feb.2009 | Accepted: Oct.2009To cite this article:Lagiu, Efimia; Solero, Carlos; Tavella, Mirta; Valentino, Norma. In the eye of the storm: convalescent companies and political-party strategies. e-Universitas UNR Journal [Online], Volumen 1 Número 3 [octubre 2009]. Available in: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/21. ISSN 1666-6143.
05 • DIFERENCIAS COMPORTAMENTALES EN GALLINAS PONEDORAS CON Y SIN EL ”MÉTODO LLOVERA” DURANTE EL PERÍODO PRIMAVERAL
No full textResumenEn trabajos anteriores se demostraron las ventajas del control de moscas en galpones de gallinas ponedoras, aplicando el “Método Llovera”. El mismo consiste en colocar gallinas de descarte en el piso, sin alimentación propia, en una cantidad correspondiente al 10% de los animales del galpón.1 De esta forma se logra disminuir la cantidad de moscas, y aumentar la producción de huevos mejorando la calidad y la rentabilidad. Un ambiente sin moscas es mucho menos estresante, lo cual influye favorablemente sobre el metabolismo de las aves, mejorando la producción. Sin embargo con este método también podría originarse una situación etológica especial, dada la convivencia entre gallinas en jaula (J) y gallinas sueltas en el piso (P), que también podría influir en el mejoramiento de los parámetros productivos.AbstractAn environment with no flies and the presence of free hens could originate a special ecologic situation with influences on the improvement of productive and behavioral parameters. To analyze this hypothesis it was decided to observe, to register and to evaluate behavioral patterns that could suffer variations in the group of animals kept under Llovera´s method (hens on floor being 10% of the caged ones) compared with control animals kept in cages as in the Traditional Method (no hens on floor). A 15 minute individual observation of 24 randomly selected hens was made in a hen house where 2,000 red-colored laying hens were caged before (as control group C) and after (as Llovera group J) delivering discarded hens on floor. The behaviour register was made on designated lists for the purpose. The ethogram of the animals of both groups was made by means of an ad-libitum sampling to identify behavioral patterns expressed in the conditions of the study and a focal sample to evaluate the presentation frequency of each conduct. The test of Shapiro-Wilks was used with the results obtained to verify the normality of the differences. From these results Student´s Test was used on paired samples with normal distribution, and Wilcoxon and Sign Tests for the others. This preliminary report includes results corresponding to spring season.The behavioral patterns studied in groups C and J correspond to: kinetc behavior (to extend a wing or a leg), exploratory (to scrape on floor, to look around, to peck the cage), alimentary (to eat, to drink, to regurgitate), antipredatory (to vocalize, to suddenly be quiet), agonistic (to peck on neighbor caged hen), grooming (cleaning of feathers with the beak, scratching with the leg), eliminatory (excreta evacuation), rest (to lie down with the head on the body, to flex a leg ). The Test of Shapiro-Wilks showed that “to extend a leg”, “to scrape” and “cleaning of feathers” have normal distribution. From these results t Test is used on paired samples, under the hypothesis that the mean of such differences among the observations made before regarding to those made after is higher than 0 (zero). Significative differences are not observed at 5% being the resultant means lesser or equal to 0 (zero). Other variables were analyzed using the Test of Wilcoxon for paired samples because of the lack of normality. The variables were: “to drink”, “to be quiet”, “pecking”, “to evacuate” and “to look”, with significative differences at 5% existing a lesser presentation in the Group “J” regarding the “C”. The presence of free hens on floor and the consequent decrease in the number of flies were the only differences in production conditions between the Groups “C” and “J”. So, the modificatios in the behavior of each group should be attributed to those conditions. The higher frequency of some of the studied patterns before placing hens on floor would show that the presence of them modifies the behavior of caged hens. However, it is necessary to complete the analysis of the corresponding data of the other seasons of the year to conclude on the influence of these changes on the animals´ welfare. Received: Dec.2008 | Accepted: Apr.2009ResumenEn trabajos anteriores se demostraron las ventajas del control de moscas en galpones de gallinas ponedoras, aplicando el “Método Llovera”. El mismo consiste en colocar gallinas de descarte en el piso, sin alimentación propia, en una cantidad correspondiente al 10% de los animales del galpón.1 De esta forma se logra disminuir la cantidad de moscas, y aumentar la producción de huevos mejorando la calidad y la rentabilidad. Un ambiente sin moscas es mucho menos estresante, lo cual influye favorablemente sobre el metabolismo de las aves, mejorando la producción. Sin embargo con este método también podría originarse una situación etológica especial, dada la convivencia entre gallinas en jaula (J) y gallinas sueltas en el piso (P), que también podría influir en el mejoramiento de los parámetros productivos.Recibido: Dic.2008 | Aceptado: Abr.2009 Para citar este artículo:Mentzel, Rubén. Diferencias comportamentales en gallinas ponedoras con y sin el ";Método Llovera"; durante el período primaveral. e-Universitas UNR Journal [Online], Volumen 2 Número 2 [mayo 2009]. Disponible en: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/23. ISSN 1666-6143.AbstractAn environment with no flies and the presence of free hens could originate a special ecologic situation with influences on the improvement of productive and behavioral parameters. To analyze this hypothesis it was decided to observe, to register and to evaluate behavioral patterns that could suffer variations in the group of animals kept under Llovera´s method (hens on floor being 10% of the caged ones) compared with control animals kept in cages as in the Traditional Method (no hens on floor). A 15 minute individual observation of 24 randomly selected hens was made in a hen house where 2,000 red-colored laying hens were caged before (as control group C) and after (as Llovera group J) delivering discarded hens on floor. The behaviour register was made on designated lists for the purpose. The ethogram of the animals of both groups was made by means of an ad-libitum sampling to identify behavioral patterns expressed in the conditions of the study and a focal sample to evaluate the presentation frequency of each conduct. The test of Shapiro-Wilks was used with the results obtained to verify the normality of the differences. From these results Student´s Test was used on paired samples with normal distribution, and Wilcoxon and Sign Tests for the others. This preliminary report includes results corresponding to spring season.The behavioral patterns studied in groups C and J correspond to: kinetc behavior (to extend a wing or a leg), exploratory (to scrape on floor, to look around, to peck the cage), alimentary (to eat, to drink, to regurgitate), antipredatory (to vocalize, to suddenly be quiet), agonistic (to peck on neighbor caged hen), grooming (cleaning of feathers with the beak, scratching with the leg), eliminatory (excreta evacuation), rest (to lie down with the head on the body, to flex a leg ). The Test of Shapiro-Wilks showed that “to extend a leg”, “to scrape” and “cleaning of feathers” have normal distribution. From these results t Test is used on paired samples, under the hypothesis that the mean of such differences among the observations made before regarding to those made after is higher than 0 (zero). Significative differences are not observed at 5% being the resultant means lesser or equal to 0 (zero). Other variables were analyzed using the Test of Wilcoxon for paired samples because of the lack of normality. The variables were: “to drink”, “to be quiet”, “pecking”, “to evacuate” and “to look”, with significative differences at 5% existing a lesser presentation in the Group “J” regarding the “C”. The presence of free hens on floor and the consequent decrease in the number of flies were the only differences in production conditions between the Groups “C” and “J”. So, the modificatios in the behavior of each group should be attributed to those conditions. The higher frequency of some of the studied patterns before placing hens on floor would show that the presence of them modifies the behavior of caged hens. However, it is necessary to complete the analysis of the corresponding data of the other seasons of the year to conclude on the influence of these changes on the animals´ welfare.Received: Dic.2008 | Accepted: Abr.2009To cite this article:Mentzel, Rubén. Behavioural differences in laying hens with and without ";Llovera method"; during spring. e-Universitas UNR Journal [Online], Volumen 2 Número 2 [mayo 2009]. Available in: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/23. ISSN 1666-6143
10 • INVESTIGACIÓN CIENTÍFICA Y CONFLICTO DE INTERESES: LA NECESARIA REGULACIÓN INSTITUCIONAL
No full textConflicts of interest in scientific research can lead to serious moral deviation. They occur when the research design, the collection or the production of results are linked to compensation for authors in relation to the degree of success of the project. They are becoming more and more frequent as a result of the growing cooperation between public research and the productive sector and for the insufficiency of public resources. The community relies on the StateUniversity carries out its functions of teaching, research and extension on the basis of principles and criteria that may not coincide with the interests and the logic of the market. Conflicts of interest must be specified in previous form and requires public regulatory bodies to safeguard the ethical integrity of the institution and its members. Improving the quality of the scientific-technical cooperation between the university and the productive sector depends undertake to define interests, needs and obligations of both parties. University needs to equip itself with inner regulations in order to identify conflicts of interest, and ought to develop its duties in accordance with the respect for legimate interests of the communityLos conflictos de intereses en la investigación científica pueden causar serias desviaciones éticas. Se presentan cuando el diseño de la investigación, la obtención o presentación de resultados se vinculan a compensaciones para los autores en relación con el grado de éxito del proyecto. Son cada vez más frecuentes como consecuencia de la creciente cooperación entre la investigación pública y el sector productivo y de la insuficiencia de recursos para investigación de origen público. La sociedad confía en que la Universidad estatal ejerce sus funciones de docencia, investigación y extensión con juicio independiente, sobre la base de principios y criterios que pueden no ser coincidentes con los intereses y la lógica del mercado. Los conflictos de intereses deben explicitarse en forma previa y se requiere de instancias públicas de regulación que resguarden la integridad ética de la institución y de sus miembros. Mejorar la calidad de la cooperación científico-técnica entre el ámbito universitario y el sector productivo depende de asumir el compromiso de delimitar intereses, necesidades y obligaciones de ambas partes. Para reconocer los conflictos de intereses, la comunidad científica necesita códigos éticos de regulación y desarrollar sus actividades en un marco de irrestricto respeto por los intereses de la comunidad.Recibido: Sep.2009 | Aceptado: Oct.2009Para citar este artículo:Martínez, Stella. Investigación científica y conflicto de intereses: la necesaria regulación institucional. e-Universitas UNR Journal [Online], Volumen 1 Número 3 [octubre 2009]. Disponible en: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/32. ISSN 1666-6143.Scientific research and conflict of interests: the needed inner control mechanismsConflicts of interest in scientific research can lead to serious moral deviation. They occur when the research design, the collection or the production of results are linked to compensation for authors in relation to the degree of success of the project. They are becoming more and more frequent as a result of the growing cooperation between public research and the productive sector and for the insufficiency of public resources. The community relies on the State University carries out its functions of teaching, research and extension on the basis of principles and criteria that may not coincide with the interests and the logic of the market. Conflicts of interest must be specified in previous form and requires public regulatory bodies to safeguard the ethical integrity of the institution and its members. Improving the quality of the scientific-technical cooperation between the university and the productive sector depends undertake to define interests, needs and obligations of both parties. University needs to equip itself with inner regulations in order to identify conflicts of interest, and ought to develop its duties in accordance with the respect for legimate interests of the community.Received: Sep.2009 | Accepted: Oct.2009 To cite this article:Martínez, Stella. Scientific research and conflict of interests: the needed inner control mechanisms. e-Universitas UNR Journal [Online], Volumen 1 Número 3 [octubre 2009]. Available in: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/32. ISSN 1666-6143
07 - II Jornadas de Ciencia y Tecnología
No full textResumenPonencias presentadas en la II Jornadas de Ciencia y Tecnología de la UNR desarrollada los días 19 y 20 de noviembre de 2008.El objetivo de estas jornadas es la difusión de la producción científica y tecnológica de la Universidad, como así también el intercambio de docentes e investigadores de diferentes unidades académicas que encuentran la oportunidad de relacionarse y sociabilizar su trabajoAbstractPapers presented at the II Jornadas de Ciencia y Tecnología de la UNR developed the 19 and November 20, 2008. The aim of this conference is the diffusion of scientific and technological production of the university, but also the exchange of teachers and researchers from different academic units that include the opportunity to interact and work sociabilizar Recibido: Dic.2008 | Aceptado: Abr.2009Para citar este artículo: Lopez, Clara. II Jornadas de Ciencia y Tecnología. e-Universitas UNR Journal [Online], Volumen 2 Número 2 [mayo 2009]. Disponible en: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/24. ISSN 1666-6143.Resumen Ponencias presentadas en la II Jornadas de Ciencia y Tecnología de la UNR desarrollada los días 19 y 20 de noviembre de 2008. El objetivo de estas jornadas es la difusión de la producción científica y tecnológica de la Universidad, como así también el intercambio de docentes e investigadores de diferentes unidades académicas que encuentran la oportunidad de relacionarse y sociabilizar su trabajo Abstract Papers presented at the II Jornadas de Ciencia y Tecnología de la UNR developed the 19 and November 20, 2008. The aim of this conference is the diffusion of scientific and technological production of the university, but also the exchange of teachers and researchers from different academic units that include the opportunity to interact and work sociabilizar Received: Dec.2008 | Accepted: Apr.200
06 • ANALISIS DE LA ENERGIA DE ADHESION INTERCAMBIADA EN LA UNION CD44-HYALURONATO.
No full textResumenLos glóbulos rojos pueden adherirse a una superficie sólida por medio de las moléculas de adhesión que pueden estar vinculados a los receptores de membrana de los eritrocitos, como es el caso de las moléculas de hialuronato , que se unen a los receptores CD44 en la membrana eritrocitaria. El objetivo de este trabajo fue medir la energía específica ( d), del eritrocito hialuronato receptor (CD44) y su ligando hialuronato, bajo condiciones dinámicas. Con este fin, una cámara de control de flujo, instalada en el escenario de un microscopio y se utilizaron imágenes microscópicas que fueron digitalizadas y procesadas con un procesador de imagen digital (DIP), conectada con un acoplado cargado de alta densidad (CCD) de cámara. Se calculó las energías específicas dentro de los valores determinados para otros tipos de adhesión celular. La metodología propuesta permite una sencilla, rápida, reproducible, y no convencional manera de la estimación de la adhesión de energía específica. Esto indicaría que el método utilizado es conveniente y que puede aplicarse no sólo en este caso, sino también en otros tipos de adhesión intercelular. También puede proporcionar un parámetro útil para estudiar la adhesión como un factor de riesgo en pacientes con trastornos de la microcirculación, como diabéticos; pacientes hipertensos y personas obesasAbstractRed blood cells can adhere to a solid surface by means of adhesion molecules that can be linked to erythrocyte membrane receptors, as it is the case of hyaluronate molecules, which bind to the CD44 receptor on the erythrocyte membrane. The objective of this work was to measure the specific energy (gd) of the erythrocyte hyaluronate receptor (CD44) to its hyaluronate ligand, under dynamic conditions. For this purpose, a controlled flow chamber, installed on the stage of a microscope was used and microscopic images were digitized and processed with a digital image processor (DIP) connected with a charged coupled dense (CCD) camera. Calculated specific energies were within the values determined for other types of cellular adhesion. Methodology proposed allows for a simple, quick, reproducible, and non-conventional way of estimating the specific adhesion energy. This would indicate that the method used to determine the adhesion specific energy is convenient to be applied not only in this case but also in other types of intercellular adhesion. It can also supply a useful parameter to study adhesion as a risk factor in patients with microcirculatory disorders such as diabetic or hipertensive patients and obese people. Received: Feb.2008 | Accepted: Apr.2009ResumenLos glóbulos rojos pueden adherirse a una superficie sólida por medio de las moléculas de adhesión que pueden estar vinculados a los receptores de membrana de los eritrocitos, como es el caso de las moléculas de hialuronato , que se unen a los receptores CD44 en la membrana eritrocitaria. El objetivo de este trabajo fue medir la energía específica ( d), del eritrocito hialuronato receptor (CD44) y su ligando hialuronato, bajo condiciones dinámicas. Con este fin, una cámara de control de flujo, instalada en el escenario de un microscopio y se utilizaron imágenes microscópicas que fueron digitalizadas y procesadas con un procesador de imagen digital (DIP), conectada con un acoplado cargado de alta densidad (CCD) de cámara. Se calculó las energías específicas dentro de los valores determinados para otros tipos de adhesión celular. La metodología propuesta permite una sencilla, rápida, reproducible, y no convencional manera de la estimación de la adhesión de energía específica. Esto indicaría que el método utilizado es conveniente y que puede aplicarse no sólo en este caso, sino también en otros tipos de adhesión intercelular. También puede proporcionar un parámetro útil para estudiar la adhesión como un factor de riesgo en pacientes con trastornos de la microcirculación, como diabéticos; pacientes hipertensos y personas obesas.Recibido: Feb.2008 | Aceptado: Abr.2009 Para citar este artículo:D'Arrigo, Mabel. Analisis de la energia de adhesion intercambiada en la union CD44-Hyaluronato. e-Universitas UNR Journal [Online], Volumen 2 Número 2 [febrero 2009]. Disponible en: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/22. ISSN 1666-6143.AbstractRed blood cells can adhere to a solid surface by means of adhesion molecules that can be linked to erythrocyte membrane receptors, as it is the case of hyaluronate molecules, which bind to the CD44 receptor on the erythrocyte membrane. The objective of this work was to measure the specific energy (gd) of the erythrocyte hyaluronate receptor (CD44) to its hyaluronate ligand, under dynamic conditions. For this purpose, a controlled flow chamber, installed on the stage of a microscope was used and microscopic images were digitized and processed with a digital image processor (DIP) connected with a charged coupled dense (CCD) camera. Calculated specific energies were within the values determined for other types of cellular adhesion. Methodology proposed allows for a simple, quick, reproducible, and non-conventional way of estimating the specific adhesion energy. This would indicate that the method used to determine the adhesion specific energy is convenient to be applied not only in this case but also in other types of intercellular adhesion. It can also supply a useful parameter to study adhesion as a risk factor in patients with microcirculatory disorders such as diabetic or hipertensive patients and obese people.Received: Feb.2008 | Accepted: Abr.2009 To cite this article:D'Arrigo, Mabel. Analysis of the adhesion energy exchanged in cd44-hyaluronate binding. e-Universitas UNR Journal [Online], Volumen 2 Número 2 [febrero 2009]. Available in: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/22. ISSN 1666-6143
08 • ODONTOLOGÍA, LA ULTIMA PROFESIÓN LIBERAL
No full textIt begins with a brief historic of oral health, field research, interdisciplinary work, formation and different epistemological conceptions on the concept of health-disease and health system crisis.One of the purposes of this thesis is to generate another point of view in the process of discussion and theorization initiated in Odontology field that allows to place the daily, immediate, individual and subjective, within the social, collective, historical and structural based on the study object, intending to contribute to thematic reflection.El trabajo comienza con una breve historización de la Salud Bucal, las investigaciones en el campo, el trabajo interdisciplinario, la formación y las distintas concepciones epistemológicas en el concepto de salud –enfermedad y la crisis del sistema de salud.El objetivo general de la tesis se centro en generar nuevas conceptualizaciones y estrategias que aporten a las estructuras de grado y postgrado universitarias, o una mayor adecuación de las currículas a la formación profesional y el desarrollo de nuevas relaciones vinculares con el mercado de trabajo.Uno de los propósitos de esta tesis es generar otra mirada en el proceso de discusión y teorización iniciado en el campo odontológico que permita ubicar lo cotidiano, inmediato, individual y subjetivo, dentro de lo social, colectivo, histórico y estructural en función del objeto de estudio, con la pretensión de aportar a la reflexión temática.Recibido: Jun.2009 | Aceptado: Sep.2009Para citar este artículo:Saenz, Ignacio. Odontología, la última profesión liberal. e-Universitas UNR Journal [Online], Volumen 1 Número 3 [octubre 2009]. Disponible en: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/28. ISSN 1666-6143.AbstractIt begins with a brief historic of oral health, field research, interdisciplinary work, formation and different epistemological conceptions on the concept of health-disease and health system crisis.One of the purposes of this thesis is to generate another point of view in the process of discussion and theorization initiated in Odontology field that allows to place the daily, immediate, individual and subjective, within the social, collective, historical and structural based on the study object, intending to contribute to thematic reflection.Received: Jun.2009 | Accepted: Sep.2009To cite this article:Saenz, Ignacio. Odontology, the last liberal profession. e-Universitas UNR Journal [Online], Volumen 1 Número 3 [octubre 2009]. Available in: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/28. ISSN 1666-6143
09 • STATISTICAL EDUCATION IN SOCIAL SCIENCES
No full textoai:ojs.e-universitas.edu.ar:article/27ResumenEl presente trabajo constituye el texto de la conferencia invitada al Octavo Congreso Latinoamericano de Sociedades de Estadística, desarrollado en la Facultad de Ciencias Económicas y de Administración de la Universidad de la República, Montevideo, Uruguay, en octubre de 2008.Se expone una postura acerca de la enseñanza de la Estadística en las Ciencias Sociales producto de la experiencia de la autora en cursos de grado, postgrado y formación docente en ciencias sociales.Se señalan algunas resistencias al aprendizaje producto de una inadecuada interpretación acerca del uso de los métodos cuantitativos y se exponen conceptos acerca de la distinción entre cuantitativo y cualitativo y sobre la construcción del dato científico. Se presentan resultados de las experiencias docentes y se sugieren recomendaciones.Recibido: Ago.2009 | Aceptado: Oct.2009Para citar este artículo:Moscoloni, Nora. Enseñanza de Estadística en Ciencias Sociales. e-Universitas UNR Journal [Online], Volumen 1 Número 3 [octubre 2009]. Disponible en: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/27. ISSN 1666-6143. STATISTICAL EDUCATION IN SOCIAL SCIENCESSummaryThis paper constitutes the text of the plenary talk gave at the 8th. Congress of Latin American Statistical Societies developed in the Faculty of Economics and Management of the University of the Republic, Montevideo, Uruguay, in October 2008.A position on the teaching of Statistics in the social sciences outlines the experience of the author in degree, post-graduate and teacher training in social sciences courses product.Some reasons for the resistance to learn are stated among which an inappropriate interpretation of the use of quantitative methods and concepts about the distinction between quantitative and qualitative and on the construction of scientific data are presented. Educational experiences results are exposed and best practices are suggested.Received: Ago.2009 | Accepted: Oct.2009To cite this article:Moscoloni, Nora. Statistical education in Social Sciences. e-Universitas UNR Journal [Online], Volumen 1 Número 3 [octubre 2009]. Available in: http://www.e-universitas.edu.ar/journal/index.php/journal/article/view/27. ISSN 1666-6143. This paper constitutes the text of the plenary talk gave at the 8th. Congress of Latin American Statistical Societies developed in the Faculty of Economics and Management of the University of the Republic, Montevideo, Uruguay, in October 2008.A position on the teaching of Statistics in the social sciences outlines the experience of the author in degree, post-graduate and teacher training in social sciences courses product.Some reasons for the resistance to learn are stated among which an inappropriate interpretation of the use of quantitative methods and concepts about the distinction between quantitative and qualitative and on the construction of scientific data are presented. Educational experiences results are exposed and best practices are suggested
01► MANCHA NEGRA Y CARIES EN DENTICIÓN DECIDUA Y MIXTA.
No full textThe aim of this research was to establish the correlation between dental caries and the black stain, both in deciduous and mixed dentition.A cross-sectional study was practiced to determine the prevalence of chromogenic bacteria in the mouth, and their relationship with teeth pigmentation and caries index.A total of 433 children aged between 3 and 10 years old were examined at the Servicio de Diagnóstico de la Facultad de Odontología de Rosario. The Study group comprised 18 children with black stain while the Control group comprised 18 stain-free children. Dental plaque and saliva samples were taken from both groups and black stain samples were taken from the Study group. All the samples were cultured in specific media for anaerobic pigment-forming bacteria. Variables were established and the data from clinical and dental history, and bacteriologic results was statistically analyzed.The examined population had no obvious evidence of decayed, missing, and filled teeth (DMF-T= 0); however, they suffered from some respiratory disease (bronchial spasm, retropharyngeal mucus and otitis, oral habits like fingersucking, onychophagia and mouth breathing).A correlation was observed between dental caries and black stain; the cultures showed the presence of Prevotella and Porphyromonas, and there was a significant incidence between stained surfaces with respiratory diseases and oral habits.Received: Aug. 2008 | Accepted: Oct. 2008El propósito de esta investigación fue establecer la relación entre Caries Dental y Mancha Negra en dentición decidua y mixta. Se realizó un estudio transversal para determinar la presencia en boca de bacterias cromógenas, su relación con la pigmentación de los dientes e índice de caries.Se examinaron 433 niños, entre 3 y 10 años de edad ,que concurrieron al Servicio de Diagnóstico de la Facultad de Odontología de Rosario, 18 de los cuales presentaron Mancha Negra, constituyendo el Grupo de Estudio. Un número igual de niños, con la misma edad, formó el Grupo Control. Se tomaron muestras de Placa Dental y Saliva a ambos grupos y de Mancha Negra al Grupo de Estudio. Las muestras se cultivaron en medios específicos para bacterias anaerobias formadoras de pigmento. Se establecieron variables de interés y se analizaron estadísticamente los datos de historias clínicas, odontológicas y resultados bacteriológicos.La población estudiada presentó C.P.O.=0, enfermedades respiratorias: espasmo bronquial, mucosidad retrofaríngea y otitis, hábitos orales como digitosucción , onicofagia y respiración bucal.Se estableció relación entre Caries Dental y Mancha Negra; en los cultivos se detectaron Prevotella y Porphyromonas y se encontró incidencia significativa entre superficies manchadas con enfermedades respiratorias y hábitos orales.Recibido: Ago. 2008 | Aceptado: Oct. 2008AbstractThe aim of this research was to establish the correlation between dental caries and the black stain, both in deciduous and mixed dentition.A cross-sectional study was practiced to determine the prevalence of chromogenic bacteria in the mouth, and their relationship with teeth pigmentation and caries index.A total of 433 children aged between 3 and 10 years old were examined at the Servicio de Diagnóstico de la Facultad de Odontología de Rosario. The Study group comprised 18 children with black stain while the Control group comprised 18 stain-free children. Dental plaque and saliva samples were taken from both groups and black stain samples were taken from the Study group. All the samples were cultured in specific media for anaerobic pigment-forming bacteria. Variables were established and the data from clinical and dental history, and bacteriologic results was statistically analyzed.The examined population had no obvious evidence of decayed, missing, and filled teeth (DMF-T= 0); however, they suffered from some respiratory disease (bronchial spasm, retropharyngeal mucus and otitis, oral habits like fingersucking, onychophagia and mouth breathing).A correlation was observed between dental caries and black stain; the cultures showed the presence of Prevotella and Porphyromonas, and there was a significant incidence between stained surfaces with respiratory diseases and oral habits.Received: Aug. 2008 | Accepted: Oct. 2008Artigo não disponível em português