El discurso narrativo y su representaci?n mediante el c?mic, una propuesta did?ctica para promover la lectura y la escritura en el grado cuarto del Gimnasio Santa Roc?o

118 p. Recurso Electr?nicoA partir de la observaci?n realizada en la instituci?n, se tom? como poblaci?n el grado cuarto donde se encontr? falencias en cuanto a la comprensi?n lectora y producci?n escrita. Se implement? la investigaci?n ?EL DISCURSO NARRATIVO Y SU REPRESENTACI?N MEDIANTE EL C?MIC, UNA PROPUESTA DID?CTICA PARA PROMOVER LA LECTURA Y LA ESCRITURA EN EL GRADO CUARTO DEL GIMNASIO SANTA ROC?O? para fortalecer la comprensi?n lectora a partir de la lectura de textos narrativos cortos que posibilit? la creaci?n de comics. Para su implementaci?n se elaboraron talleres con actividades l?dicas donde los estudiantes leyeron textos, identificaron personajes, crearon y expusieron sus propios comics para ser incluidos en el libro ?mis creaciones?. Para este proceso se tuvo en cuenta la investigaci?n cualitativa y el dise?o Investigaci?n Acci?n Participativa. De acuerdo con lo anterior se fundamenta en la normatividad emanada por las pol?ticas gubernamentales en: Ley general de educaci?n, lineamientos y est?ndares curriculares; al igual que te?ricos como Amaya (2002), C?rdenas (2004), Baena (1996), Ni?o (1985), Piaget (1973) y Ausubel (1983) que fortalecieron la conceptualizaci?n del lenguaje, la lectura, la escritura, el texto narrativo, el comic, los aspectos psicol?gicos y pedag?gicos que sirvieron como base para el desarrollo metodol?gico. En este orden de ideas se logr? que los estudiantes desarrollaran la competencia lectora, la creaci?n de textos propios a partir de vivencias y experiencias de la cotidianidad involucrado el comic como estrategia did?ctica que potencio la comprensi?n y producci?n textual. Palabras clave: Lectura, escritura, texto narrativos y comic.From the done observation at Gimnasio Santa Rocio, placed in Villa del Rio neighbourhood in the seventh district of Bosa. Some students of grade fourth were taken, which shawed some difficulties in reading comprehension and written production implemented an investigation called the narrative speech and its representation throught comics, a didactic proporsal to promote reading and writing in grade fourth in Gimnasio Santa Rocio aiming reinforcing reading comprehension from short narrative texts (fables and tales) those allowed to create comics. For its implementation some workshops and ludic activities were implemented; where students read text, identified characters, created and introduced their own comics to be included into the book ?My creations?. For this process it was taken into account the qualitative investigation and the participatory action research design. According to that, it is based in the rules issued by the government policies in general law of education (Ley general de Educaci?n), Curricular Guidelines (Lineamientos Curriculares) same as some theorist such as Amaya (2002), C?rdenas (2004), Baena (1996), Ni?o (1985), Vygotsky (1997), Piaget (1973) and Ausubel (1983) who strengthen the conceptualization of language, reading, writing, narrative text, comic, physiological and pedagogical aspects that were useful as a base for methodological development. In that order of ideas was achieved that students would develop the reading competence, the creations of own texts from experiences of everyday life involving comic as a didactic strategy that strength comprehension and textual production. Keywords: Reading, writing, narrative text (tales and fables) and comic

Social capital and self-rated health among adolescents in Brazil: an exploratory study

<p>Abstract</p> <p>Background</p> <p>Social capital may influence health and the patterns of association differ according its dimension such as cognitive, behavioral, bridging or bonding. There is a few numbers of studies in Latin America which comprise these aspects of social capital and health. The aim of this study was to examine the association between social capital and self-rated health among youth, and distinguish between the different forms of social capital - cognitive versus behavioral, and bonding versus bridging.</p> <p>Findings</p> <p>A cross-sectional study was conducted in 2009 among working adolescents supported by a Brazilian NGO. The sample comprised 363 individuals and data were collected using a validated structured questionnaire. The outcome, self-rated health, was measured as a dichotomous variable (poor/good health) and fourteen social capital indicators were investigated (cognitive, behavioral and bonding/bridging). Data were analyzed using multivariate logistic regression. Cognitive (social support and trust), behavioral (civic participation) and bridging social capital were associated with good self-rated health after adjustment of all the other social capital indicators and confounders (sex, age, skin color and educational background).</p> <p>Conclusions</p> <p>Social capital was associated with self-rated health and the patterns of association differed according its specific dimensions. Cognitive, behavioral and bridging social capitals were protective for adolescents health living in a developing country context..</p

Trans‐selective insertional dihydroboration of a cis‐diborene: synthesis of linear sp3‐sp2‐sp3‐triboranes and subsequent cationization

The reaction of aryl‐ and amino(dihydro)boranes with dibora[2]ferrocenophane 1 leads to the formation 1,3‐trans‐dihydrotriboranes by formal hydrogenation and insertion of a borylene unit into the B=B bond. The aryltriborane derivatives undergo reversible photoisomerization to the cis‐1,2-μ‐H‐3hydrotriboranes, while hydride abstraction affords cationic triboranes, which represent the first doubly base‐stabilized B3H4+ analogues

Shape-resonant superconductivity in nanofilms: from weak to strong coupling

Ultrathin superconductors of different materials are becoming a powerful platform to find mechanisms for enhancement of superconductivity, exploiting shape resonances in different superconducting properties. Here we evaluate the superconducting gap and its spatial profile, the multiple gap components, and the chemical potential, of generic superconducting nanofilms, considering the pairing attraction and its energy scale as tunable parameters, from weak to strong coupling, at fixed electron density. Superconducting properties are evaluated at mean field level as a function of the thickness of the nanofilm, in order to characterize the shape resonances in the superconducting gap. We find that the most pronounced shape resonances are generated for weakly coupled superconductors, while approaching the strong coupling regime the shape resonances are rounded by a mixing of the subbands due to the large energy gaps extending over large energy scales. Finally, we find that the spatial profile, transverse to the nanofilm, of the superconducting gap acquires a flat behavior in the shape resonance region, indicating that a robust and uniform multigap superconducting state can arise at resonance.Comment: 7 pages, 4 figures. Submitted to the Proceedings of the Superstripes 2016 conferenc

Dengue virus genomic variation associated with mosquito adaptation defines the pattern of viral non-coding RNAs and fitness in human cells

The Flavivirus genus includes a large number of medically relevant pathogens that cycle between humans and arthropods. This host alternation imposes a selective pressure on the viral population. Here, we found that dengue virus, the most important viral human pathogen transmitted by insects, evolved a mechanism to differentially regulate the production of viral non-coding RNAs in mosquitos and humans, with a significant impact on viral fitness in each host. Flavivirus infections accumulate non-coding RNAs derived from the viral 3'UTRs (known as sfRNAs), relevant in viral pathogenesis and immune evasion. We found that dengue virus host adaptation leads to the accumulation of different species of sfRNAs in vertebrate and invertebrate cells. This process does not depend on differences in the host machinery; but it was found to be dependent on the selection of specific mutations in the viral 3'UTR. Dissecting the viral population and studying phenotypes of cloned variants, the molecular determinants for the switch in the sfRNA pattern during host change were mapped to a single RNA structure. Point mutations selected in mosquito cells were sufficient to change the pattern of sfRNAs, induce higher type I interferon responses and reduce viral fitness in human cells, explaining the rapid clearance of certain viral variants after host change. In addition, using epidemic and pre-epidemic Zika viruses, similar patterns of sfRNAs were observed in mosquito and human infected cells, but they were different from those observed during dengue virus infections, indicating that distinct selective pressures act on the 3'UTR of these closely related viruses. In summary, we present a novel mechanism by which dengue virus evolved an RNA structure that is under strong selective pressure in the two hosts, as regulator of non-coding RNA accumulation and viral fitness. This work provides new ideas about the impact of host adaptation on the variability and evolution of flavivirus 3'UTRs with possible implications in virulence and viral transmission.Fil: Filomatori, Claudia Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; ArgentinaFil: Carballeda, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; ArgentinaFil: Villordo, Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; ArgentinaFil: Aguirre, Sebastian. Cedars Sinai Medical Center; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Pallarés, Horacio Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; ArgentinaFil: Maestre, Ana M.. Cedars Sinai Medical Center; Estados UnidosFil: Sánchez Vargas, Irma. State University of Colorado - Fort Collins; Estados UnidosFil: Blair, Carol D.. State University of Colorado - Fort Collins; Estados UnidosFil: Fabri, Cintia. Instituto Nacional de Enfermedades Virales Humanas "Dr. Julio I. Maiztegui"; ArgentinaFil: Morales, Maria A.. Instituto Nacional de Enfermedades Virales Humanas "Dr. Julio I. Maiztegui"; ArgentinaFil: Fernandez Sesma, Ana. Cedars Sinai Medical Center; Estados UnidosFil: Gamarnik, Andrea Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; Argentin

Single-cell proteomics defines the cellular heterogeneity of localized prostate cancer

Localized prostate cancer exhibits multiple genomic alterations and heterogeneity at the proteomic level. Single-cell technologies capture important cell-to-cell variability responsible for heterogeneity in biomarker expression that may be overlooked when molecular alterations are based on bulk tissue samples. This study aims to identify prognostic biomarkers and describe the heterogeneity of prostate cancer and the associated microenvironment by simultaneously quantifying 36 proteins using single-cell mass cytometry analysis of over 1.6 million cells from 58 men with localized prostate cancer. We perform this task, using a high-dimensional clustering pipeline named Franken to describe subpopulations of immune, stromal, and prostate cells, including changes occurring in tumor tissues and high-grade disease that provide insights into the coordinated progression of prostate cancer. Our results further indicate that men with localized disease already harbor rare subpopulations that typically occur in castration-resistant and metastatic disease

Multidrug resistant pulmonary tuberculosis treatment regimens and patient outcomes: an individual patient data meta-analysis of 9,153 patients.

Treatment of multidrug resistant tuberculosis (MDR-TB) is lengthy, toxic, expensive, and has generally poor outcomes. We undertook an individual patient data meta-analysis to assess the impact on outcomes of the type, number, and duration of drugs used to treat MDR-TB

Sleep deprivation increases oleoylethanolamide in human cerebrospinal fluid

This study investigated the role of two fatty acid ethanolamides, the endogenous cannabinoid anandamide and its structural analog oleoylethanolamide in sleep deprivation of human volunteers. Serum and cerebrospinal fluid (CSF) samples were obtained from 20 healthy volunteers before and after a night of sleep deprivation with an interval of about 12 months. We found increased levels of oleoylethanolamide in CSF (P = 0.011) but not in serum (P = 0.068) after 24 h of sleep deprivation. Oleoylethanolamide is an endogenous lipid messenger that is released after neural injury and activates peroxisome proliferator-activated receptor-α (PPAR-α) with nanomolar potency. Exogenous PPAR-α agonists, such as hypolipidemic fibrates and oleoylethanolamide, exert both neuroprotective and neurotrophic effects. Thus, our results suggest that oleoylethanolamide release may represent an endogenous neuroprotective signal during sleep deprivation