416 research outputs found
Does video self-analysis influence pre-service language teachers’ position within CLIL settings?
Positioning theory helps to understand pre-service teachers’ performance and their professional identity. In the Content and Language Integrated Learning (CLIL) approach, studying teachers’ praxis from the positioning theory is relevant as integrating language and content is problematic for both in-service and pre-service teachers. Moreover, positioning theory could help teachers understand their teaching position. Video technology, as a valuable tool for teacher training, facilitates teachers’ analysis of their own teaching praxis and more importantly, it can help develop teaching awareness. However, scarce literature is found on how video-analysis from the positioning theory may benefit teachers in CLIL contexts. The objective of this paper is to analyse the influence of self video-analysis on pre-service teachers’ positions within CLIL settings. To conduct this research, pre-service teachers recorded and analysed a simulated CLIL lesson. Interviews were designed and administered to know the influence of video on participating teachers’ positions. Video supported pre-service teachers noticing their praxis and the meaning of CLIL while operating changes on their positions. Knowing the evolution of pre-service teachers’ positioning may contribute to, on the one hand, understanding professional identity and, on the other hand, to implement video-technology actions in pre-service programmes to support pre-service teachers’ noticing.La teoría del posicionamiento ayuda a comprender la actuación del profesorado en ejercicio y su identidad profesional. En AICLE el estudio de la praxis del profesorado desde la teoría del posicionamiento es relevante, ya que la integración de lengua y contenidos resulta problemática. Además, la teoría del posicionamiento podría ayudar a entender la posición docente. La tecnología de vídeo facilita el análisis de la propia praxis docente y, además, puede ayudar a desarrollar la conciencia docente. Sin embargo, es escasa la literatura sobre cómo el videoanálisis desde la teoría del posicionamiento puede beneficiar al profesorado AICLE. El objetivo de este trabajo es analizar la influencia del autoanálisis de vídeo en las posiciones del profesorado en formación en contextos AICLE. Los participantes grabaron y analizaron una clase simulada en AICLE. Se diseñaron y administraron entrevistas para conocer la influencia del vídeo en sus posiciones. El vídeo les ayudó a entender su praxis y el significado de AICLE, al tiempo que operaba cambios en sus posiciones. Conocer la evolución del posicionamiento del profesorado en formación puede contribuir a conceptualizar la identidad profesional, y a implementar acciones de videotecnología en programas de formación para apoyar la percepción de este profesorado
Constraints and possibilities in using geographical information systems to the analysis on provision and allocation of social services
This paper is aimed to asses the value of Geographical lnformation Systems in formulating policies for planning social services (especially, their allocation and further use). Above all, we pretend to recognize the possibilities in introducing information about sociological or
perceptual features and individual behavior in a G.I.S .. Besides, we try to identify the
possibility of using this kind of information combined with other different data
Maintenance of immune tolerance by Foxp3+ regulatory T cells requires CD69 expression
Although FoxP3+ regulatory T cells are key players in the maintenance of immune tolerance and autoimmunity, the lack of specific markers constitute an obstacle to their use for immunotherapy protocols. In this study, we have investigated the role of the C-type lectin receptor CD69 in the suppressor function of Tregs and maintenance of immune tolerance towards harmless inhaled antigens. We identified a novel FoxP3+CD69+ Treg subset capable to maintain immune tolerance and protect to developing inflammation. Although CD69+ and CD69-FoxP3+ Tregs exist in homeostasis, only CD69-expressing Tregs express high levels of CTLA-4, ICOS, CD38 and GITR suppression-associated markers, secrete high amounts of TGFβand have potent suppressor activity. This activity is regulated by STAT5 and ERK signaling pathways and is impaired by antibody-mediated down-regulation of CD69 expression. Moreover, immunotherapy with FoxP3+CD69+ Tregs restores the homeostasis in Cd69-/- mice, that fail to induce tolerance, and is also highly proficient in the prevention of inflammation. The identification of the FoxP3+CD69+ Treg subset paves the way toward the development of new therapeutic strategies to control immune homeostasis and autoimmunity.This work was supported by funding from the Spanish Ministry of Economy and Competitiveness: SAF2011-27330 to P.M., SAF2010-15106 to M.L.T and SAF2011-25834 to F.S-M.; grant INDISNET (S2010/BMD-2332) from Comunidad de Madrid and RETICS Enfermedades Cardiovasculares (RD12/0042/0056) from Instituto de Salud Carlos III to P.M and F. S-M; and ERC-2011-AdG294340-GENTRIS to F.S-M. J.R.C. was supported by a CNIC post-doctoral fellowship, R. S-D is funded with a pre-doctoral fellowship from Comunidad de Madrid and E.R.B. and A.M-M. were supported by a FPI pre-doctoral fellowship from the Spanish Ministry of Economy and Competitiveness. The CNIC is supported by the Spanish Ministry of Economy and Competitiveness and the Pro CNIC Foundation.Peer Reviewe
Impacts of Organic Emerging Contaminants (Erythromycin, Ibuprofen, and Diclofenac) on the Performance of a Membrane Bioreactor Treating Urban Wastewater: A Heterotrophic Kinetic Investigation
The occurrence of emerging organic contaminants, such as pharmaceuticals, is a growing global concern. In this research, for a membrane bioreactor (MBR) laboratory plant operating at a hydraulic retention time (HRT) of 24 h, fed with real urban wastewater, the heterotrophic biomass behaviour was analysed for two concentrations of erythromycin, ibuprofen, and diclofenac. The concentrations studied for the first phase were erythromycin 0.576 mg L−1, ibuprofen 0.056 mg L−1, and diclofenac 0.948 mg L−1. For Phase 2, the concentrations were increased to erythromycin 1.440 mg L−1, ibuprofen 0.140 mg L−1, and diclofenac 2.370 mg L−1. Heterotrophic biomass was affected and inhibited by the presence of pharmaceutical compounds in both phases. The system response to low concentrations of pharmaceutical compounds occurred in the initial phase of plant doping. Under these operating conditions, there was a gradual decrease in the concentration of mixed liquor suspended solids and the removal of chemical oxygen demand of the system, as it was not able to absorb the effect produced by the pharmaceutical compounds added in both phases
The absence of 5-HT4 receptors modulates depression- and anxiety-like responses and influences the response of fluoxetine in olfactory bulbectomised mice: Adaptive changes in hippocampal neuroplasticity markers and 5-HT1A autoreceptor
reclinical studies support a critical role of 5-HT4 receptors (5-HT4Rs) in depression and anxiety, but their influence in depression- and anxiety-like behaviours and the effects of antidepressants remain partly unknown. We evaluated 5-HT4R knockout (KO) mice in different anxiety and depression paradigms and mRNA expression of some neuroplasticity markers (BDNF, trkB and Arc) and the functionality of 5-HT1AR. Moreover, the implication of 5-HT4Rs in the behavioural and molecular effects of chronically administered fluoxetine was assessed in naïve and olfactory bulbectomized mice (OBX) of both genotypes. 5-HT4R KO mice displayed few specific behavioural impairments including reduced central activity in the open-field (anxiety), and decreased sucrose consumption and nesting behaviour (anhedonia). In these mice, we measured increased levels of BDNF and Arc mRNA and reduced levels of trkB mRNA in the hippocampus, and a desensitization of 5-HT1A autoreceptors. Chronic administration of fluoxetine elicited similar behavioural effects in WT and 5-HT4R KO mice on anxiety-and depression-related tests. Following OBX, locomotor hyperactivity and anxiety were similar in both genotypes. Interestingly, chronic fluoxetine failed to reverse this OBX-induced syndrome in 5-HT4R KO mice, a response associated with differential effects in hippocampal neuroplasticity biomarkers. Fluoxetine reduced hippocampal Arc and BDNF mRNA expressions in WT but not 5-HT4R KO mice subjected to OBX. These results demonstrate that the absence of 5-HT4Rs triggers adaptive changes that could maintain emotional states, and that the behavioural and molecular effects of fluoxetine under pathological depression appear to be critically dependent on 5-HT4RsThis research was supported by Spanish Ministry of Economy and Competitiveness (SAF2011-25020), and Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM)
Constraints and possibilities in using geographical information systems to the analysis on provision and allocation of social services
This paper is aimed to asses the value of Geographical lnformation Systems in formulating policies for planning social services (especially, their allocation and further use). Above all, we pretend to recognize the possibilities in introducing information about sociological or\ud
perceptual features and individual behavior in a G.I.S .. Besides, we try to identify the\ud
possibility of using this kind of information combined with other different data
An Assessment of Balance through Posturography in Healthy about Women: An Observational Study
The incidence of falls in adults constitutes a public health problem, and the alteration in balance is the most important factor. It is necessary to evaluate this through objective tools in order to quantify alterations and prevent falls. This study aims to determine the existence of alteration of balance and the influence of age in a population of healthy women. Static posturography was performed on 49 healthy adult women with no history of falls in four different situations using the Romberg test with the NedSVE/IBV® platform. The variables studied were the body sway area and the anteroposterior and mediolateral displacements. The situation of maximum instability occurred in RGC (p = 0.001), with a significant increase in anteroposterior oscillations regarding the ML (p < 0.001), with no correlation to age. Age alone does not influence the balance in the sample studied, other factors must come together to alter it. The joint cancellation of visual and somatosensory afferents could facilitate the appearance of falls, given that it is a situation of maximum instability. Proprioceptive training is interesting as a preventive strategy for falls
Analysis of a suppressive subtractive hybridization library of Alternaria alternata resistant to 2-propenyl isothiocyanate
AbstractBackgroundIsothiocyanates (ITCs) are natural products obtained from plants of the Brassicas family. They represent an environmentally friendly alternative for the control of phytopathogenic fungi. However, as it has been observed with synthetic fungicides, the possibility of inducing ITC-resistant strains is a major concern. It is, therefore, essential to understanding the molecular mechanisms of fungal resistance to ITCs. We analyzed a subtractive library containing 180 clones of an Alternaria alternata strain resistant to 2-propenyl ITC (2-pITC). After their sequencing, 141 expressed sequence tags (ESTs) were identified using the BlastX algorithm. The sequence assembly was carried out using CAP3 software; the functional annotation and metabolic pathways identification were performed using the Blast2GO program.ResultsThe bioinformatics analysis revealed 124 reads with similarities to proteins involved in transcriptional control, defense and stress pathways, cell wall integrity maintenance, detoxification, organization and cytoskeleton destabilization; exocytosis, transport, DNA damage control, ribosome maintenance, and RNA processing. In addition, transcripts corresponding to enzymes as oxidoreductases, transferases, hydrolases, lyases, and ligases, were detected. Degradation pathways for styrene, aminobenzoate, and toluene were induced, as well as the biosynthesis of phenylpropanoid and several types of N-glycan.ConclusionsThe fungal response showed that natural compounds could induce tolerance/resistance mechanisms in organisms in the same manner as synthetic chemical products. The response of A. alternata to the toxicity of 2-pITC is a sophisticated phenomenon including the induction of signaling cascades targeting a broad set of cellular processes. Whole-transcriptome approaches are needed to elucidate completely the fungal response to 2-pITC
Clubs de lectura como estrategia para aumentar el conocimiento sobre nutrición entre la población general: Estudio piloto
Introduction: The spread of false news related to nutrition shows the need to provide general public validated information on food and health, inducing them to follow healthy dietary habits. Objective: To assess whether attendance to book clubs devoted to scientific disseminations books is a useful strategy for improving nutritional knowledge among the population. Methodology: 65 adults participated in a reading club, attending a research center once a month for 4 months to talk about informative scientific books on food/nutrition. The knowledge of the participants was monitored through a survey performed in all the sessions of the club. Results: Participants were mostly female with university studies. Attendance to the book clubs caused a significant increase (P < 0.05) in the number of correct answers on a questionnaire about common misbeliefs on the topics covered in the discussed books. Participants showed a high degree of satisfaction with the activity and willingness to read more scientific dissemination books, even when most of them were not previously usual readers. Conclusions: Book clubs based on popular science books and led by scientists with expertise in the field could increase nutritional knowledge among general population, which should be further explored in different socioeconomic contexts.Introducción: La difusión de noticias falsas relacionadas con la nutrición muestra la necesidad de proporcionar al público general información validada sobre alimentación y salud, induciendo a llevar hábitos dietéticos saludables. Objetivo: Evaluar si la asistencia a clubs de lectura dedicados a libros de divulgación científica es una estrategia útil para mejorar el conocimiento nutricional entre la población. Metodología: 65 adultos participaron en un club de lectura, asistiendo una vez al mes, durante 4 meses a un centro de investigación para conversar sobre libros científicos divulgativos de alimentación/nutrición. Se llevó a cabo un seguimiento de los conocimientos de los participantes a través de una encuesta realizada en todas las sesiones del club de lectura. Resultados: Los participantes fueron en su mayoría mujeres con estudios universitarios. La asistencia a los clubs de lectura provocó un aumento significativo (P < 0,05) en el número de respuestas correctas en un cuestionario sobre las creencias erróneas comunes en los temas tratados en los libros discutidos. Conclusiones: Los clubs de lectura basados en libros de divulgación científica y dirigidos por científicos con experiencia en el campo pueden aumentar el conocimiento nutricional entre la población en general, debiéndose explorar más a fondo en diferentes contextos socioeconómicos
- …