Generación Post Revolucionaria: entre la Memoria y el Poder Simbólico

La investigación analiza y reflexiona sobre la Generación Post Revolucionaria. Analiza el comportamiento político de esta generación y, más concretamente, los condicionamientos mentales que sobre ella impone el poder simbólico de la Revolución Sandinista, y el que todavía ejercen los miembros de la generación revolucionari

Reinforced silica-carbon nanotube monolithic aerogels synthesised by rapid controlled gelation

This work introduces a new synthesis procedure for obtaining homogeneous silica hybrid aerogels with carbon nanotube contents up to 2.50 wt.%. The inclusion of nanotubes in the highly porous silica matrix was performed by a two-step sol–gel process, resulting in samples with densities below 80 mg/cm3. The structural analyses (N2 physisorption and SEM) revealed the hierarchical structure of the porous matrix formed by nanoparticles arranged in clusters of 100 and 300 nm in size, specific surface areas around 600 m2/g and porous volumes above 4.0 cm3/g. In addition, a relevant increase on the mechanical performance was found, and an increment of 50% for the compressive strength and 90% for the maximum deformation were measured by uniaxial compression. This reinforcement was possible thanks to the outstanding dispersion of the CNT within the silica matrix and the formation of Si–O–C bridges between nanotubes and silica matrix, as suggested by FTIR. Therefore, the original synthesis procedure introduced in this work allows the fabrication of highly porous hybrid materials loaded with carbon nanotubes homogeneously distributed in the space, which remain available for a variety of technological applications

Solar Radiation Modelling and Forecasting

[EN]In this paper, an adaptive solar radiation numerical model for complex terrains is described.Secretaría de Estado de Investigación, Desarrollo e Innovación del Ministerio de Economía y Competitividad del Gobierno de España; Fondos FEDER

Anti-Acanthamoeba Activity of Brominated Sesquiterpenes from Laurencia johnstonii

Focusedonourinteresttodevelopnovelantiparasisticagents,thepresentstudywasaimed to evaluate the biological activity of an extract of Laurencia johnstonii collected in Baja California Sur, Mexico, against an Acantamoeba castellanii Neff strain. Bioassay-guided fractionation allowed us to identify the amoebicidal diastereoisomers α-bromocuparane (4) and α-isobromocuparane (5). Furthermore, bromination of the inactive laurinterol (1) and isolaurinterol (2) yielded four halogenated derivatives, (6)–(9), which improved the activity of the natural sesquiterpenes. Among them, the most active compound was 3α-bromojohnstane (7), a sesquiterpene derivative which possesses a novel carbon skeleton johnstane

Los hábitos de lectura y su relación con otras variables

El presente artículo tiene por objeto analizar los hábitos de lectura que poseen los alumnos en una muestra escolar navarra que abarca los distintos tramos del sistema educativo: 174 alumnos de Educación Primaria, 536 de Educación Secundaria Obligatoria y 337 de Bachillerato, en total 1047 alumnos en edades comprendidas entre los 9 y los 17 años. A todos ellos se le s administró un cuestionario sobre hábitos de lectura de forma colectiva en sus propios centros de enseñanza. Las variables objeto del análisis fueron la afición a la lectura y la conducta lectora. Además se evaluaron otras variables para conocer su relación con las variables principales: uso controlado de la televisión, fomento de la lectura por parte de padres y profesores, comprensión lectora, comprensión verbal, habilidad mental verbal, razonamiento lógico y memoria. Se tuvo en cuenta el curso y el sexo de los participantes. Tras la realización del análisis estadístico se constató la tendencia descendente de los hábitos de lectura conforme aumenta la edad de los sujetos, la mayor presencia de hábitos de lectura en las chicas que en los chicos y la correlación que presentan los hábitos de lectura con otras variables: comprensión lectora, uso controlado de la televisión y fomento de la lectura por parte de padres y profesores.The present article has the aim of analyzing the habits of reading which were showed by students during a Navarra school random (cross-section example) which contains the different levels of our educative system: one hundred and seventy-four primary students, five hundred and thirty-six (compulsory) secondary students and three hundred and thirty-seven students of high school graduate, one thousand and forty-seven students from nine to seventeen years old, in all. All of them were provided in a collective way with a questionnaire about habits of reading, in their educative centres. Their fond of reading and their reading behaviour were the main variables analysed. Furthermore, it was evaluated other variables in order to know their relation with main variables: Watching television in a mode rare way, the encouragement of their parents and their teachers to read, the reading understanding and the oral understanding, their intellectual ability, the logical reasoning and the memory. The age and the sex of the participants were considered, too. After the statistical analyse, it was verified that the older the students are, the less habits of reading they have. Girls show more habits of reading than boys and it can be seen a correlation between the habits on reading and other variables: read understanding, watching television in a moderate way and the encouragement of the parents and teachers to read

Microorganisms and hygiene habits: Is there more to be learned in Infant Education by means of worksheets?

En este trabajo se presentan los hábitos de higiene y el conocimiento que tiene un conjunto de 69 alumnos de Educación Infantil (4-6 años) sobre microorganismos y se analiza la posible influencia sobre ellos de dos propuestas didácticas diferentes (tradicional –grupo control- y con indagación –grupo experimental-). La información se obtuvo en tres momentos diferentes -pre-intervención didáctica, post intervención y dos meses después-, mediante dibujos de los niños, un cuestionario aplicado oral e individualmente con preguntas cerradas y abiertas y un cuestionario dirigido a las familias. Se detectan indicios de que el alumnado reconoce a los microorganismos como seres vivos. Tras la intervención no se encuentran diferencias estadísticamente significativas entre el grupo experimental y el control. Dos meses después se observa una mejora en el grupo control respecto a algunos hábitos de higiene y en el grupo experimental se recuerda el proceso de indagación con placas de Petri. Estos resultados abren nuevos interrogantes.The hygiene habits and the knowledge that a group of 69 students of Early Childhood Education (4-6 years old) have about microorganisms is presented in this work. The possible influence on them of two different didactic proposals (traditional -control group- and inquiry-based learning -experimental group-) is analysed. The information was obtained at three different moments -pre didactic intervention, post intervention and two months later-. The used tolls were children's drawings, an oral and individually applied questionnaire with closed and open questions and a questionnaire addressed to the families. Indications are detected that the students recognize the microorganisms as living beings. After the intervention, no statistically significant differences were found between the experimental and control groups. Two months later an improvement was observed in the control group with respect to some hygiene habits and in the experimental group the process of investigation with petri dishes was recalled. These results open new research questions

DISEÑO DE UN JUEGO SERIO PARA LA ESTIMULACIÓN DEL APRENDIZAJE MEDIANTE LA DISCRIMINACIÓN AUDITIVA Y VISUAL DE PALABRAS (DESIGN OF A SERIOUS GAME FOR THE STIMULATION OF LEARNING THROUGH AUDITORY AND VISUAL DISCRIMINATION OF WORDS)

Resumen El uso de juegos serios para reforzar los procesos cognitivos que favorecen el aprendizaje en niños y jóvenes es muy útil. El presente trabajo desarrolla un juego serio dirigido a adolescentes y jóvenes adultos con discapacidad intelectual, orientado a la estimulación de la habilidad visual y auditiva, importante en las habilidades perceptivas en el aprendizaje. El juego se desarrolló con una metodología de programación estructurada y modular. El juego serio presenta una interfaz de usuario amigable en un ambiente lúdico que permite la motivación del usuario. Además, refuerza el aprendizaje usando habilidades: visuales, auditivas y escritas. Con el fin de ubicar al jugador en un contexto o lugar, incluye un conjunto de palabras agrupadas en campos semánticos. Su funcionalidad permite incrementar el número de palabras o modificar los escenarios a necesidad del usuario para reforzar nuevos conceptos. Palabras clave: Discapacidad intelectual, habilidad visual y auditiva, juego serio. Abstract The use of serious games to reinforce the cognitive processes that favor learning in children and young people is very useful. This work develops a serious game aimed at adolescents and young adults with intellectual disabilities, aimed at stimulating visual and auditory ability, important in perceptual skills in learning. The game was developed with a structured and modular programming methodology. The serious game features a friendly user interface in a playful environment that enables user motivation. In addition, it reinforces learning using visual, auditory, and written skills. In order to place the player in a context or place, it includes a set of words grouped into semantic fields. Its functionality allows to increase the number of words or modify the scenarios as required by the user to reinforce new concepts. Keywords: Intellectual disability, serious play, visual and auditory ability

Oxidative stress influence on renal dysfunction in patients with obstructive jaundice: A case and control prospective study

Obstructive Jaundice (OJ) is associated with a significant risk of developing acute renal failure (ARF). The involvement of oxidative stress in the development of cholestasis has been demonstrated in different experimental models. However, its role in the morbidity of human cholestasis is far to be elucidated. The aim of the study was the evaluation of oxidative stress markers in blood from patients with OJ and its relation to complications and benign/malignant evolution of cholestasis. Methods: A prospective cross-sectional study of 105 patients with OJ and 34 control subjects were included. Several markers of liver function and oxidative stress, such as lipoperoxides (LPO), as well as reduced glutathione (GSH), catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities were assessed. Results: The patients with OJ showed a marked increase in plasma levels of LPO, SOD and GSH, while GSH-Px levels were decreased. The increase in lipid peroxidation products and the depletion of SOD activity in blood were also related to renal dysfunction. The highest level of LPO was associated with malignant etiology of the disease. The logistic regression analysis showed that the age of the patient and the levels of LPO in blood were predictors of renal dysfunction in OJ patients. Conclusions: This study demonstrates a correlation between oxidative stress and renal dysfunction patients with OJ.Instituto de Salud Carlos III PI02/015