Abstract Objective: This article shows the design and training of an artificial neural network (ANN) to predict academic results of Civil Engineering students of the Fabiola Salazar Leguía National Intercultural University, from Bagua-Peru, in the subject of Mathematics II. Method: The CRISP-DM methodology was used, surveys were conducted to collect the data, and the RNA model was implemented in the Matlab software using the nnstart command and two learning algorithms: Scaled Conjugate Gradient (SCG) and Levenberg-Marquardt (LM). The performance of the model was evaluated through the mean square error and the correlation coefficient. Conclusions: The LM algorithm achieved better prediction effectiveness.

Resumen Objetivo: Este artículo muestra el diseño y entrenamiento de una red neuronal artificial (RNA) para predecir resultados académicos de estudiantes de Ingeniería Civil de la Universidad Nacional Intercultural Fabiola Salazar Leguía de Bagua-Perú en la asignatura de Matemática II. Método: Se utilizó la metodología CRISP-DM, para recolectar los datos se emplearon encuestas, el modelo de RNA se implementó en el software Matlab utilizando el comando nnstart y dos algoritmos de aprendizaje: Scaled Conjugate Gradient (SCG) y Levenberg-Marquardt (LM), el rendimiento del modelo se evaluó mediante el error cuadrático medio y el coeficiente de correlación. Conclusiones: El algoritmo LM logró mejor efectividad en la predicción.

Resumo Objetivo: Este artigo mostra o projeto e o treinamento de uma rede neural artificial (RNA) para predizer resultados acadêmicos de alunos de Engenharia Civil da Universidade Nacional Intercultural Fabiola Salazar Leguía de Bagua-Peru na disciplina de Matemática II. Método: A metodologia CRISP-DM foi utilizada, levantamentos foram utilizados para coletar os dados, o modelo de RNA foi implementado no software Matlab usando o comando nnstart e dois algoritmos de aprendizagem: Scaled Conjugate Gradient (SCG) e Levenberg-Marquardt (LM). O desempenho do modelo foi avaliado por meio do erro quadrático médio e do coeficiente de correlação. Conclusã: O algoritmo LM alcançou melhor eficácia de previsão.

Resumen Presentamos resultados seleccionados de un estudio desarrollado recientemente, realizado en el marco de un programa de investigación sobre conocimiento y formación docente, en una universidad pública del nordeste argentino (región geográfica nea). En esta ocasión examinamos la configuración del conocimiento didáctico tecnológico del contenido (cdtc) de una docente experimentada del área de Tecnología educativa de una unidad académica, al enseñar a producir materiales didácticos mediados por tic. Se utiliza como referencia de análisis el modelo tpck y aportes conceptuales del área del Diseño Gráfico sobre comunicación visual. La estrategia metodológica es el estudio de caso único de enfoque holístico. La construcción narrativa del caso se apoya en la triangulación de distintas fuentes e instrumentos de recolección de datos. Los resultados revelan que la perspectiva del diseño gráfico mejora sustancialmente la calidad del material didáctico aunque su funcionalidad en la propuesta pedagógica queda supeditada al entramado resultante de todos los componentes del modelo tpck.

Resumo Apresentamos resultados selecionados de um estudo recentemente desenvolvido, realizada no âmbito de um programa de pesquisa sobre formação e conhecimento docente, em uma universidade pública do nordeste argentino (região geográfica nea); na ocasião, examinamos a configuração do conteúdo tecnológico didático conhecimento (cdtc) de um professor experiente na área de tecnologia educacional uma unidade acadêmica, ao ensinar como produzir materiais didáticos mediados por tic. O modelo tpck e as contribuições conceituais da área de Design Gráfico sobre comunicação visual são usados como referência para análise. A estratégia metodológica é o estudo de caso único com abordagem holística. A construção narrativa do caso é sustentada pela triangulação de diferentes fontes e instrumentos de coleta de dados. Os resultados revelam que a perspectiva do design gráfico melhora substancialmente a qualidade do material didático, embora sua funcionalidade na proposta pedagógica esteja sujeita ao enquadramento resultante de todos os componentes do modelo tpck.

Abstract We present selected results of a recently developed study, carried out within the framework of a research program on knowledge and teacher training, in a public university in the northeast of Argentina (nea Geographic region); This time we examine the configuration of the content technological didactic knowledge (cdtc) of an experienced teacher in the area of Educational Technology of an academic unit, when teaching how to produce ict-mediated didactic materials. The tpck model and conceptual contributions from the Graphic Design area on visual communication are used as a reference for analysis. The methodological strategy is the single case study with a holistic approach. The narrative construction of the case is supported by the triangulation of different sources and data collection instruments. The results reveal that the perspective of graphic design substantially improves the quality of the didactic material, although its functionality in the pedagogical proposal is subject to the resulting framework of all the components of the tpck model.

Resumo O objetivo deste trabalho foi identificar, por análise molecular, as espécies do gênero Helicoverpa nas lavouras – Bt e não Bt – de milho, soja e alfafa, no centro da Argentina. Um total de 1.343 lagartas foram analisadas por PCR-RFLP. A espécie H. zea foi a única detectada no milho não Bt e na maioria do Bt. A espécie H. gelotopoeon predominou na soja não Bt e na alfafa, mas H. zea ocorreu em baixa proporção. A soja Bt não apresentou infestações por Helicoverpa spp. A exótica H. armigera não foi encontrada, porém, mariposas adultas dessa espécie foram capturadas com armadilha luminosa em uma amostragem complementar.

Abstract The objective of this work was to identify, by molecular analysis, the species of the genus Helicoverpa in corn, soybean, and lucerne Bt and non-Bt crops, in central Argentina. A total of 1,343 carterpillars were analyzed by PCR-RFLP. Helicoverpa zea was the only species detected on non-Bt and on most Bt corn hybrids. The species H. gelotopoeon predominated on non-Bt soybean and on lucerne, and H. zea larvae occurred in low proportion. Bt soybean did not show Helicoverpa spp. infestations. The exotic H. armigera was not found, though adult moths of this species were light-trapped in a complementary sampling.

RESUMO Introdução: o Bypass Gástrico Laparoscópico em Y de Roux (LRYGB) tem sido uma intervenção revolucionária para perda de peso com redução de até 60-70% do excesso de peso corporal. No entanto, esses resultados não são tão bem validados nos extremos de idade, onde a segurança da intervenção ainda possui algumas ressalvas. O objetivo deste estudo é avaliar a eficácia e segurança do LRYGB entre diferentes faixas etárias. Métodos: O banco de dados do Programa de Acreditação e Melhoria da Qualidade da Cirurgia Metabólica e Bariátrica (MBSAQIP) foi consultado para pacientes submetidos a LRYGB de janeiro de 2014 a dezembro de 2017 em uma única instituição. Quatro grupos foram criados e comparados dividindo a amostra por quartis de idade. O desfecho primário foi perda percentual de excesso de peso (%EWL) em 1 ano. Resultados: 1013 pacientes foram submetidos a LRYGB durante o período do estudo. A média de %EWL em um ano foi de 55%. Quando comparados entre os quartis, houve diferença significante no %EWL: 1º 62%, 2º 57%, 3º 54%, e 4º 47% (p=0,010). As diferenças nos desfechos secundários entre as faixas etárias não demonstraram significância estatística. Conclusões: embora os pacientes no quarto quartil de idade não tenham demonstrado um aumento estatisticamente significativo nos resultados adversos, eles perderam menos peso em comparação com outras coortes. O %EWL um ano após RYGB variou de acordo com a idade em nossa coorte. Os objetivos após a cirurgia bariátrica devem ser individualizados, pois a perda de peso é menos robusta com o envelhecimento.

ABSTRACT Introduction: laparoscopic Roux-en-Y Gastric Bypass (LRYGB) has been a revolutionary intervention for weight loss with reduction of up to 60-70% of excess body weight. However, these outcomes are not as well validated at the extremes of age, where the safety of the intervention still has some caveats. The aim of this study is to assess the efficacy and safety of primary LRYGB among different age groups. Methods: the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP) database was queried for patients who underwent primary LRYGB from January 2014 to December 2017 at a single institution. Four groups were created and compared by dividing our sample by age quartiles. The primary outcome was percent excess weight loss (%EWL) at 1 year. Additional operative outcomes and complications were also compared across groups. Results: a total of 1013 patients underwent non-revisional LRYGB during the study period. Mean %EWL at one year was 55%. When compared between quartiles, there was a statistically significant difference in %EWL: 1st 62%, 2nd 57%, 3rd 54% and 4th 47% (p=0.010). The differences in the secondary outcomes between age groups did not demonstrate statistical significance. Conclusions: though patients in the fourth age quartile (range) did not demonstrate a statistically significant increase in adverse outcomes, they did lose less weight compared to other cohorts. The %EWL at one year after RYGB varied by age in our cohort. Goals after bariatric surgery should be individualized as weight loss is less robust with aging.

ABSTRACT The forests that fulfill the ecosystem service are considered as mitigating factors of climate change. Environmental education is the main component to solve the problems of the environment and natural resources; the strategies that are used for their teaching, must conceive the knowledge in situ. The objective of the research was to apply the guided visit and environmental education workshops to the university students of the School of Forest and Environmental Engineering of the National University of Jaén as teaching strategies so that they recognize the Municipal Conservation Area Bosque de Huamantanga (ACMBH) a climate change mitigator. The sample consisted of 39 students, the research was of a pre-experimental type with pre-test and post-test for a single group. In the general Chi-square hypothesis test, it was found that the bilateral significance was less than the critical value (p = 0.05), accepting the alternative statistical hypothesis, that is, the guided visit and the workshops in environmental education are two teaching strategies that they serve to recognize the ACMBH as a mitigator of climate change.

RESUMEN Los bosques que cumplen con el servicio ecosistémico son consideradores mitigadores del cambio climático. La educación ambiental es el componente principal para dar solución a los problemas del medio ambiente y de los recursos naturales; las estrategias que se empleen para su enseñanza, deben concebir el conocimiento in situ. El objetivo de la investigación fue aplicar la visita guiada y talleres de educación ambiental a los estudiantes universitarios de la Escuela de Ingeniería Forestal y Ambiental de la Universidad Nacional de Jaén como estrategias de enseñanza para que reconocer al Área de Conservación Municipal Bosque de Huamantanga (ACMBH) como mitigador del cambio climático. La muestra fue de 39 estudiantes, la investigación fue de tipo pre experimental con pre test y pos test para un solo grupo. En la prueba de hipótesis general Chi-cuadrado, se encontró que la significancia bilateral fue menor que el valor crítico (p=0.05), aceptando la hipótesis estadística alterna, es decir la visita guiada y los talleres en educación ambiental son dos estrategias enseñanza que sirven para reconocer al ACMBH como mitigador del cambio climático.

Abstract: Introduction: Recently the objectives of major surgery have been a focus on offering the best possibilities that lead to a fast recovery and the return of the patient to his daily task, and this must be carried with adequate analgesic quality, this matter represents a challenge for the anesthesiologist choosing which drug to use during the trans-anesthetic period. Material and methods: This is a study of case and control type, 26 patients were studied any type of major noncardiac surgery under balanced general anesthesia, with the aim of quantifying the consumption of intraoperative fentanyl, In a homogeneous population, it was determined that there is lower consumption of trans anesthetic opioids in the group that was perfused with dexmedetomidine with a value of p < 0.05, as well as a better analgesic quality, this last one was measured using the numerical scale of pain. Results: Thus, concluding that the use of dexmedetomidine as an infusion during the trans anesthetic period reduces the consumption of opioids and probably contributes to a faster recovery.

Resumen: Introducción: Recientemente los objetivos de la cirugía mayor tratan de enfocarse en ofrecer las mejores posibilidades para una pronta recuperación y reanudación a las labores cotidianas con adecuada calidad analgésica, cuestiones que representan un reto para el anestesiólogo en la elección de los medicamentos a usar. Material y métodos: Se realizó un estudio prospectivo, observacional y descriptivo del tipo casos y controles. Se estudiaron 26 pacientes en quienes se llevó a cabo algún tipo de cirugía mayor no cardiaca bajo anestesia general balanceada, teniendo como objetivo cuantificar el consumo de fentanilo transoperatorio en una población homogénea. Se determinó que existe menor consumo de opioides transanestésicos en el grupo al cual se le perfundió dexmedetomidina, con un valor de p < 0.05 así como mejor calidad analgésica midiendo ésta con la escala numérica del dolor. Resultados: Se concluyó que el uso de dexmedetomidina en perfusión durante el periodo transanestésico disminuye el consumo de opioides y probablemente contribuya con su pronta recuperación.

Abstract: We address the technological didactic knowledge of the content built on academic praxis and its expression in learning activities to get closer to the ways of using and integrating ICT in university education for teachers from different academic groups. We use the TPACK model (Technological, Pedagogical, Content, Knowledge) initially proposed by Mishra and Koheler (2006) as an analysis framework. We build interpretations using this framework, but not with the purpose of confirming generalizations, but rather to discover how they are expressed and qualitatively reconfigured in specific cases and contexts. The study of multiple cases was chosen as the methodological strategy, which we built from triangular semi-structured interviews, non-participant observation of classes, and documentary analysis, and then validated in recursive processes using narrative strategies for analysis. The findings reveal a lack of ICT integration in teaching and learning processes, accounting for activities that are predominantly assimilative and expository. Depending on the academic context and professional trajectory, distinct notes emerge in its appropriation.

Resumen: Abordamos el conocimiento didáctico tecnológico del contenido construido en la praxis académica y su expresión en las actividades de aprendizaje, con el objeto de aproximarnos a los modos de uso e integración de las TIC en la enseñanza universitaria de docentes de diferentes colectivos académicos. Utilizamos como marco de análisis el modelo TPACK (Technological, Pedagogical, Content, Knowledge), inicialmente propuesto por Mishra y Koheler (2006). Siguiendo este encuadre, construimos interpretaciones, pero no con el interés de confirmar generalizaciones, sino en detectar como estas se expresan y reconfiguran cualitativamente en casos y contextos particulares. La estrategia metodológica adoptada es el estudio de casos múltiples, los que construimos a partir de triangular entrevistas semi-estructuradas, observación no participante de clases y análisis documental, para luego validar en procesos recursivos valiéndonos de estrategias narrativas para el análisis. Los resultados denotan escasa integración de las TIC en los procesos de enseñanza y aprendizaje, dando cuenta de actividades con prevalencia asimilativa y expositiva. En su apropiación aparecen notas distintivas en función del contexto académico y la trayectoria profesional.

ABSTRACT: This article shows the results of an academic research on the way in which the Peruvian press addresses the issue of abortion. A content analysis has been carried out to detect the frames, themes and journalistic sources present in 160 texts published during the five-year period 2015-2019 by the newspapers El Comercio, Perú 21, La República, La Hora, Correo and El Tiempo. The first three are part of the most read press in the metropolitan Lima region, while the last three are among the most read newspapers in the Piura region. These two regions are the most populated in the Andean country. One of the variables of the content analysis are the generic frames used by the press: pro-life, pro-abortion and neutral/ambiguous. The results show that five of the six selected newspapers -all except El Comercioused mostly pro-life frames, that is, opposed to induced abortion. On the other hand, the three newspapers that are part of the most read press in the Piura region used more pro-life frames in percentage terms than the three newspapers that are part of the most read press in the metropolitan Lima region. Regarding the type of sources that journalists used to report on abortion, they mostly belong to the political and religious spheres, while those from the scientific sphere were relegated to third place.

RESUMEN: Este artículo muestra los resultados de una investigación académica sobre el modo en que la prensa peruana aborda el tema del aborto. Se ha realizado un análisis de contenido para detectar los encuadres, los temas y las fuentes periodísticas presentes en 160 textos publicados en el quinquenio 2015-2019 por los diarios El Comercio, Perú 21, La República, La Hora, Correo y El Tiempo. Los tres primeros forman parte de la prensa más leída en la región de Lima metropolitana, mientras que los tres últimos están entre los diarios más leídos en la región de Piura. Estas dos regiones son las más pobladas del país andino. Una de las variables del análisis de contenido son los encuadres genéricos utilizados por la prensa: provida, proaborto y neutro/ambiguo. Los resultados muestran que cinco de los seis diarios seleccionados -todos excepto El Comercioutilizaron mayoritariamente encuadres provida, es decir, opuestos al aborto inducido. Por otra parte, los tres diarios que forman parte de la prensa más leída en la región de Piura utilizaron porcentualmente encuadres más provida que los tres diarios que forman parte de la prensa más leída en la región de Lima metropolitana. En cuanto al tipo de fuentes a las que recurrieron los periodistas para informar sobre el aborto, pertenecen mayoritariamente a los ámbitos político y religioso, mientras que las del ámbito científico quedaron relegadas a un tercer lugar.

ABSTRACT The presence of Barleria prionitis L., a naturalized species of the Acanthaceae family, is confirmed in Cuba in the ruderal flora of Boyeros and La Lisa municipalities, in the Havana province. Information is provided on nomenclature, phenotype, distribution, uses, and possible threat to urban ecosystems.

RESUMEN Se confirma en Cuba la presencia de Barleria prionitis L., especie naturalizada de la familia Acanthaceae, en la flora ruderal de los municipios Boyeros y La Lisa, en la provincia La Habana. Se aporta información sobre la nomenclatura, el fenotipo, la distribución, los usos y la posible amenaza a los ecosistemas urbanos.

ABSTRACT Vascular plants Type specimens, housed since the first half of the twentieth century at Cienfuegos Botanical Garden Herbarium “Atkins”, in Cuba, formerly directed by the Arnold Arboretum of the Harvard University, are listed. The Historic Section of this collection has more than eighty botanists, authors of several publications, and contains duplicates in important international herbaria. The present research has the objective of detect their samples on which specie’s names were based. Types designated in the labels were confirmed consulting other herbaria and literature. Furthermore, botanist represented in our collection, were search in other herbaria. Results was 51 Types specimens, belong to 31 species, 19 genera and 15 botanical families; widespread in 15 herbaria with 118 duplicates. Was added, references of publication, distribution, and Endangered Category. Coccothrinax (Arecaceae) species are outstanding, while main collectors were Brother León, J. G. Jack, R. A. Howard and J.P. Carabia. This report raises the possibility of taxonomic studies of the Cuban Flora collections. The AJBC collection may contain other unidentified samples with taxonomic value, so it is important to continue its analysis.

RESUMEN Se listan los ejemplares Tipo de plantas vasculares, depositadas desde la primera mitad del siglo veinte, en el Herbario “Atkins” del Jardín Botánico de Cienfuegos, en Cuba, antiguamente dirigido por el Arnold Arboretum, de la Universidad de Harvard. La Sección Histórica de esta colección, posee más de ochenta botánicos, autores de diversas publicaciones, y contiene duplicados en importantes herbarios internacionales. Con el objetivo de detectar en ella, los ejemplares en los que se basaron nombres de especies, se realizó la presente investigación. En los casos de muestras designadas en la etiqueta, se confirmó consultando otros herbarios y la literatura. Además, se buscó en otros herbarios con muestras de los colectores más representados en esta colección. Resultaron 51 ejemplares, pertenecientes a 31 especies, 19 géneros y 15 familias; y se distribuyen en 15 herbarios con 118 duplicados. Se añadió la referencia de la publicación, nombre válido, distribución geográfica, endemismo y categoría de amenaza. Se destacan las especies de Coccothrinax (Arecaceae), mientras que los colectores principales son Hermano León, J. G. Jack, R. A. Howard y J. P. Carabia. Con este reporte se mejora la capacidad de estudios taxonómicos de las colecciones de la Flora de Cuba. La colección AJBC, aún pudiera contener otros ejemplares de valor taxonómico aun no detectados, por lo que es importante continuar su análisis.

Abstract Characterize the content of phytochemical compounds present in samples of extracts of strawberry (Fragaria sp.) and blackberry (Rubus sp.). The extraction of said compounds was carried out with solutions of polar solvents, such as acetone, ethanol and methanol, using an experimental design with three factors: state of maturity, resting time and temperature. The characterization of these fruits is the beginning of the utilization mainly of ellagitannins to produce ellagic acid. Total phytochemical content was determined by spectrophotometric techniques, for phenolic content it was used Folin-Ciocalteu, for flavonoids it was determined with aluminium chloride, the antioxidant activity was evaluated by the methods of DPPH and ABTS+, the bactericidal effect of the extracts was shown for strains of E. coli and S. aureus. The determination of ellagitannins was performed by spectrometry. The influence of the state of maturity on the response variable was evaluated; it was observed that concentration of phytochemicals increases proportionally to maturity stage. The antioxidant activity was evaluated, determining that extracts obtained exhibit 94% - 95% inhibition. The determination of ellagitannins, finding that the highest concentration of ellagitannins was found in a state of green maturity, for strawberries as well as blackberries.

We present an approach to the Knowledge and teaching practices around the Technological Pedagogical Content Knowledge (TPACK) or Conocimiento Didáctico-Tecnológico del Contenido (CDTC) in university classrooms of humanistic careers in an Argentine university. Methodologically, we built a multiple case consisting of teaching teams of six subjects linked to the Educational Technology of Teachers and Degrees from one of the Academic Units. Also, we perform a double triangulation: intra - methodological (primary and secondary sources) and of participating researchers and teachers as a relevant validation strategy in a qualitative study. We find that the ways of approaching the theory-practice relationship come in various configurations of the TPACK, according to the professional trajectories of the teachers and networks of experiences of permanent training, management and research. Configurations built individually and collectively re-built in the disciplinary-academic territories and different contexts.

Presentamos una aproximación a los conocimientos y prácticas docentes en torno al conocimiento didáctico-tecnológico del contenido (CDTC) o Technological Pedagogical Content Knowledge (TPACK) en aulas universitarias de carreras humanísticas en una universidad argentina. Metodológicamente, construimos un caso múltiple constituido por equipos docentes de seis asignaturas vinculadas con Tecnología educativa de Profesorados y Licenciaturas de una de las Unidades Académicas. También realizamos una doble triangulación: intra-metodológica (fuentes primarias y secundarias) y de investigadores y docentes participantes como estrategia de validación pertinente en un estudio cualitativo. Encontramos que las maneras de abordar la relación teoría-práctica devienen en variadas configuraciones del CDTC, según las trayectorias profesionales de las profesoras y entramados de experiencias de formación permanente, gestión e investigación. Configuraciones construidas individualmente y re-construidas colectivamente en los territorios disciplinares-académicos y diferentes contextos.

Abstract A glucocorticoid monodose improves the patient’s evolution under anesthesia, but the prolonged administration decreases the duration of the neuromuscular block. Objective: To determine the effect of a dexamethasone monodose on the duration of the neuromuscular blockade induced with rocuronium. Material and methods: Observational, randomized, longitudinal and prospective study. Patients who received a dexamethasone monodose (200 μg/kg) one hour prior to surgery (group A), in the anesthetic induction (group B) and in the recovery from the neuromuscular block (group C). The degree of neuromuscular block was evaluated with the a TOF-Watch®SX monitor. The neuromuscular transmission was measured at its basal state and after administering rocuronium, starting at minute zero, the maximum depression of the simple stimulus, the onset of action, the clinical duration, the recovery index, the train of four, the postetanic score and the recovery index ≥ 0.9 for extubation. Results: 12 patients were assigned per group. Group A had a greater decrease in the duration of the neuromuscular block compared to B and C (recovery index ≥ 0.9 min): group A: 42.6 ± 9.1, B: 49.6 ± 0.4, C: 55 ± 16.2); p < 0.05 group A versus B. p < 0.05 group A versus C. Conclusion: A dexamethasone monodose decreases the duration of the neuromuscular block by rocuronium in 10-20%.

Resumen La monodosis de glucocorticoides mejora la evolución del paciente bajo anestesia, pero su administración prolongada disminuye la duración del bloqueo neuromuscular. Objetivo: Determinar el efecto de una monodosis de dexametasona en la duración del bloqueo neuromuscular inducido con rocuronio. Material y métodos: Estudio observacional, aleatorizado, longitudinal y prospectivo. Pacientes que recibieron una monodosis de dexametasona (200 μg/kg) una hora antes de la cirugía (grupo A), en la inducción anestésica (grupo B) y en la recuperación del bloqueo neuromuscular (grupo C). El grado de bloqueo neuromuscular fue evaluado con el monitor TOF-Watch®SX. Se midió la transmisión neuromuscular basal y después de administrar el rocuronio a partir del minuto cero, la máxima depresión del estímulo simple, el inicio de la acción, la duración clínica, el índice de recuperación, el tren de cuatro, la cuenta postetánica y el índice de recuperación ≥ 0.9 para la extubación. Resultados: Se asignaron 12 pacientes por grupo. El grupo A presentó mayor disminución en la duración del bloqueo neuromuscular comparado con el B y el C (índice de recuperación ≥ 0.9 min): grupo A: 42.6 ± 9.1, B: 49.6 ± 0.4, C: 55 ± 16.2); p < 0.05 grupo A versus B, p < 0.05 grupo A versus C. Conclusión: La monodosis de dexametasona disminuye la duración del bloqueo neuromuscular por rocuronio en 10-20%.

We present partial results of the research “The construction of didactic knowledge of content in experienced and beginners teachers of the UNNE. Multi-case study”, whose objective is the understanding of the processes of construction of the professional knowledge of university teachers, specifically related to the didactic-technological knowledge of the content (TPACK). We propose the analysis of teachers’ representations on the use of ICTs in teaching proposals and in student learning experiences, central aspects to locate the technological dimension in different levels of curricular integration in the aulic projects. We report 4 case studies consisting of narratives of experienced teachers of single-paradigmatic and multiparadigmatic disciplines of two Academic Units of the UNNE. Based on the analysis and interpretation of the different modes of integration of digital technologies, we note the emergence of indications that account for the complex relationships between didactic, technological and disciplinary knowledge.

Presentamos resultados parciales de la investigación “La construcción del conocimiento didáctico del contenido en profesores experimentados y principiantes de la UNNE. Estudio de casos múltiples”, cuyo objetivo es la comprensión de los procesos de construcción del conocimiento profesional de docentes universitarios, específicamente referidos al conocimiento didáctico-tecnológico del contenido (CDTC). Proponemos el análisis de las representaciones de profesores/as sobre el uso de las TIC en las propuestas de enseñanza y en las experiencias de aprendizaje de estudiantes, aspectos centrales para ubicar la dimensión tecnológica en distintos niveles de integración curricular en los proyectos áulicos. Reportamos 4 Casos de estudio constituidos por narrativas de profesores experimentados de disciplinas monoparadigmáticas y multiparadigmáticas de dos Unidades Académicas de la UNNE. A partir del análisis e interpretación de los diversos modos de integración de las tecnologías digitales, advertimos la aparición de indicios que dan cuenta de las complejas relaciones entre conocimientos didácticos, tecnológicos y disciplinares.