La experiencia de la literatura: Una propuesta de taller de escritura creativa para aprendices de ele/L2

Este artículo recoge una propuesta didáctica de taller de escritura creativa –que surge en el marco de la investigación llevada a cabo para mi tesis doctoral– concebido como espacio independiente al de la clase de ELE/L2, en el que puedan confluir aprendices con distintos niveles de dominio lingüístico y comunicativo y donde el principal objetivo sea desarrollar su escritura de manera más creativa, imaginativa y personal, al no tener que atender a las necesidades curriculares concretas impuestas por la práctica de la expresión escrita en el contexto de una clase regular. Tras una breve introducción, exponemos cuáles son sus fundamentos así como los detalles de su funcionamiento para poder llevarla a cabo.This article deals with a proposal to teach a creative  writing workshop −which arose as a result of my doctoral thesis− which goes beyond the classroom and which is addressed to learners of different language levels and communication skills. The main goal of the workshop would be to develop the learners’ writing in a more creative, imaginative and personal way without the specific curricular requirements of the school classroom. After a brief introduction, the basis and details of the workshop are outlined so that it can be put into practice.Este artículo recoge una propuesta didáctica de taller de escritura creativa –que surge en el marco de la investigación llevada a cabo para mi tesis doctoral– concebido como espacio independiente al de la clase de ELE/L2, en el que puedan confluir aprendices con distintos niveles de dominio lingüístico y comunicativo y donde el principal objetivo sea desarrollar su escritura de manera más creativa, imaginativa y personal, al no tener que atender a las necesidades curriculares concretas impuestas por la práctica de la expresión escrita en el contexto de una clase regular. Tras una breve introducción, exponemos cuáles son sus fundamentos así como los detalles de su funcionamiento para poder llevarla a cabo

O uso de adições em argamassas de cal para restauro

A utilização de adições em argamassas de cal e areia é antiga e está registrada nos livros de Vitrúvio (séc. I a.C.), que destacou o uso de fragmentos e de pó cerâmico em suas composições, e nas publicações de vários outros investigadores que lhe seguiram, tais como Alberti (séc. XV), Cataneo (séc. XVI), D’ Aviler e Scamozzi (séc. XVII), Belidor e Loriot (séc. XVIII), entre outros. O emprego destes materiais em argamassas estava associado á obtenção de melhor desempenho, principalmente em locais em contato constante com água, como cisternas, reservatórios, canais, entre outros, onde eram requeridas propriedades de estanqueidade e durabilidade. Mais recentemente, outras incorporações vêm sendo analisadas, com destaque para o metacaulim. Visando estudar argamassas de revestimento de paredes de edifícios antigos, para substituição das originais, este trabalho objetiva avaliar características mecânicas e de comportamento á água de argamassas de cal hidratada e areia com adições de pó cerâmico e também de metacaulim. Para alcançar o objetivo proposto, foi realizada uma campanha experimental, com a execução de ensaios nos estados fresco, tais como Squeeze Flow e Flow Table, e endurecido, a 28 e 90 dias. Nesta última condição, serão executados ensaios de resistência á tração e á compressão, módulo de elasticidade, absorção capilar e porosidade. Adicionalmente, serão apresentados dados das caracterizações mineralógica, física, química e mecânica das adições, com destaque para a atividade pozolânica. Os resultados serão analisados por meio de comparações com valores de formulações de referência (composições sem adições) e com o estabelecido pela literatura internacional para argamassas destinadas a intervenções restaurativas. Ressalta-se a importância deste estudo para a tecnologia de produção de argamassas a serem utilizadas em restaurações atuais de edifícios antigos e para a Ciência da Conservação e do Restauro

On mechanical behavior of metal anchors in historical brick masonry: testing and analytical validation

The repair and strengthening of historical masonry buildings is a fundamental aspect in the conservation of the built cultural heritage. Temporary shoring or strengthening are often used and, usually, involve the introduction of new metallic elements. The connection between the original substrate and the new elements must be analyzed carefully to prevent further damage to the building. This paper presents a study on the mechanical behavior of metal anchors applied to brick masonry walls. An experimental campaign is developed, and a series of pull-out tests are carried out on masonry walls built in a laboratory with natural hydraulic lime mortar and low mechanical strength bricks. Two groups of tests are conducted, namely, with the actuator in the direction of the anchor axis and with the actuator inclined with respect to the fastener axis. Moreover, two types of anchoring systems are used, namely, adhesive (chemical and cementitious grout) and mechanical anchors. The experimental results are compared to predictive analytical formulas available in the literature for estimation of the ultimate load capacity, according to the type of failure. From the comparison between experimental and analytical values, it is proven that the analytical formulation originally developed for concrete substrates cannot be directly extrapolated to brick masonry cases, and specific predictive formulas should be developed. The presented research can be used to select the most efficient anchoring system for strengthening and retrofitting of historical brick masonry structures.APC funded by MDPI’s Invited Paper Progra

Acompañamiento pedagógico en el logro de aprendizaje de la evaluación censal en los estudiantes de las Instituciones Educativas Públicas del distrito de Salas - Ica

La tesis Acompañamiento pedagógico en el logro de los aprendizajes de la Evaluación Censal en los estudiantes de las instituciones educativas públicas del distrito de Salas – Ica demuestra cómo las estrategias pedagógicas concretas, las prácticas continuas y el trabajo colaborativo de los docentes logra resultados favorables en la lectura y la matemática en los estudiantes. El trabajo es una investigación no experimental de diseño transaccional correlacional, con una muestra no probabilística de 6 docentes y 174 estudiantes del segundo grado de primaria. Como instrumento se utilizó la lista de cotejo, la ficha de autoevaluación docente y el registro de Evaluación Censal. Como resultado de ambas variables tienen una correlación buena según el coeficiente de Rho Spearman de 0,719.Universidad Nacional de Educación Enrique Guzmán y Valle.Tesi

Los servicios de valor añadido en los portales periodísticos: una propuesta de clasificación

Proposal of classification of the added value services (AVS) in the portals of the Spanish journals. Seventeen portals were analysed: all of the national journals and a representation of the regional press. Eight categories were detected: information access, interactive, sharing, multimedia, personalized, amusement, commercial and complementary. The more consolidated AVS were information access and interactive , followed short by information sharing ones. The journals leading in the information access AVS were El Mundo, El País y La Verdad; in interactive AVS, ABC and Marca; and in information sharing, La VanguardiaPropuesta de clasificación de los servicios de valor añadido (SVA) de los portales periodísticos españoles a partir del análisis de un total de diecisiete portales, los de los rotativos nacionales y una representación de la prensa regional. Se identificaron ocho categorías de SVA: acceso a la información, interactivos, participación, multimedia, personalizados, entretenimiento, comerciales y Complementarios. Los SVA más consolidados son los pertenecientes a las categorías de acceso a la información e interactivos, seguidos muy de cerca por los de participación. Los portales periodísticos que destacan en la categoría de SVA de acceso a la información son los pertenecientes a los diarios El Mundo, El País y La Verdad. En el caso de los SVA interactivos sobresale ABC y Marca, y con respecto a los SVA de participación destaca La Vanguardia. (A

Improved Mechanical, Thermal, and Hydrophobic Properties of PLA Modified with Alkoxysilanes by Reactive Extrusion Process

[EN] An eco-friendly strategy for the modification of polylactic acid (PLA) surface properties, using a solvent-free process, is reported. Reactive extrusion (REX) allowed the formation of new covalent bonds between functional molecules and the PLA polymeric matrix, enhancing its mechanical properties and modifying surface hydrophobicity. To this end, the PLA backbone was modified using two alkoxysilanes, phenyltriethoxysilane and N-octyltriethoxysilane. The reactive extrusion process was carried out under mild conditions, using melting temperatures between 150 and 180 degrees C, 300 rpm as screw speed, and a feeding rate of 3 kg center dot h(-1). To complete the study, flat tapes of neat and functionalized PLA were obtained through monofilament melt extrusion to quantify the enhancement of mechanical properties and hydrophobicity. The results verified that PLA modified with 3 wt% of N-octyltriethoxysilane improves mechanical and thermal properties, reaching Young's modulus values of 4.8 GPa, and PLA hydrophobic behavior, with values of water contact angle shifting from 68.6 degrees to 82.2 degrees.This research work was funded by the Conselleria d'Economia Sostenible, Sectors Productius, Comerc i Treball de la Generalitat Valenciana through IVACE. Project references: GREENFILS, IMAMCI/2019/1 and BIOREX, IMAMCI/2020/1.Torres, E.; Gaona, A.; García-Bosch, N.; Muñoz, M.; Fombuena, V.; Moriana, R.; Vallés Lluch, A. (2021). Improved Mechanical, Thermal, and Hydrophobic Properties of PLA Modified with Alkoxysilanes by Reactive Extrusion Process. Polymers. 13(15):1-16. https://doi.org/10.3390/polym13152475S116131

Proposta de consolidação estrutural da Capela de Santana do Miradouro, na Bahia

A Capela de Santana do Miradouro está localizada no noroeste do Estado da Bahia e é considerada, segundo a tradição, como o mais antigo templo da região. Durante a sua existência, passou por diversas intervenções, muitas delas inadequadas. Atualmente, esta construção oitocentista, de alvenaria mista, encontra-se em estado de degradação, principalmente nos sistemas de cobertura, nos muros de alvenaria e nas fundações. Os principais danos identificados na cobertura referem-se ás lacunas e ruptura de telhas e ao comprometimento do sistema estrutural. As alvenarias encontram-se fissuradas e desaprumadas e as fundações com recalques, o que compromete a estabilidade da edificação. Diante do exposto, este trabalho objetiva apresentar os resultados do estudo de consolidação e estabilização estrutural dos sistemas mencionados. Ressalta-se que as propostas contemplam ações não destrutivas ou de intervenção mínima no monumento, de grande importância quando se trata de edificações de valor histórico e cultural, não obstante a sua aparente simplicidade construtiva e despojamento decorativo

Do exposure to Arsenic, occupation and diet have synergistic effects on prostate cancer risk?

Background: Diverse environmental exposures, as well as dietary and lifestyle factors, are associated with prostate cancer (PC) etiology; however little is known about joint interactive influences. The aim of this study was to analyse effects of diet combined with arsenic in drinking water and agricultural occupation on PC risk. Methods: A case-control study was conducted in Córdoba, Argentina (period 2008-2015) including 147 cases of PC and 300 controls. All subjects were interviewed about food consumption, socio-demographic and lifestyle characteristics. A sample of drinking water was taken to determine arsenic concentrations. Adherence scores to the Traditional Dietary Pattern were estimated, based on a principal component factor analysis. A two-level logistic regression model was fitted in order to assess effects of the Traditional Pattern, occupation and arsenic exposure on the occurrence of PC (outcome). Family history of PC was considered as a clustering variable. Results: PC risk was greatest in subjects with high adherence to the Traditional Pattern (OR 2.18; 95%IC 1.097-4.344). Subjects exposed to arsenic in drinking water above 0.01mg/l who simultaneously performed agricultural activities showed a markedly elevated PC risk (OR 5.07; 95%IC 2.074-12.404). Variance of the random effect of family history of PC was significant. conclusion: Diet, arsenic and occupation in agriculture exert significant effects on PC risk. Further efforts are necessary to analyse risk factors integrally, in order to achieve a better understanding of the complex causal network for PC in this multiple-exposure population.Fil: Román, María Dolores. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; ArgentinaFil: Niclis, Camila. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; ArgentinaFil: Aballay, Laura Rosana. Universidad Nacional de Cordoba. Facultad de Medicina. Escuela de Nutrición; ArgentinaFil: Lantieri, María Josefina. Universidad Nacional de Córdoba. Facultad de Medicina. Cátedra de Histología,embriología y Genética I; ArgentinaFil: Díaz, María del Pilar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; ArgentinaFil: Muñoz, Sonia Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; Argentin

Arabidopsis responds to Alternaria alternata volatiles by triggering plastid phosphoglucose isomerase-independent mechanisms

Sánchez-López, Ángela María et al.Volatile compounds (VCs) emitted by phylogenetically diverse microorganisms (including plant pathogens and microbes that do not normally interact mutualistically with plants) promote photosynthesis, growth, and the accumulation of high levels of starch in leaves through cytokinin (CK)-regulated processes. In Arabidopsis (Arabidopsis thaliana) plants not exposed to VCs, plastidic phosphoglucose isomerase (pPGI) acts as an important determinant of photosynthesis and growth, likely as a consequence of its involvement in the synthesis of plastidic CKs in roots. Moreover, this enzyme plays an important role in connecting the Calvin-Benson cycle with the starch biosynthetic pathway in leaves. To elucidate the mechanisms involved in the responses of plants to microbial VCs and to investigate the extent of pPGI involvement, we characterized pPGI-null pgi1-2 Arabidopsis plants cultured in the presence or absence of VCs emitted by Alternaria alternata. We found that volatile emissions from this fungal phytopathogen promote growth, photosynthesis, and the accumulation of plastidic CKs in pgi1-2 leaves. Notably, the mesophyll cells of pgi1-2 leaves accumulated exceptionally high levels of starch following VC exposure. Proteomic analyses revealed that VCs promote global changes in the expression of proteins involved in photosynthesis, starch metabolism, and growth that can account for the observed responses in pgi1-2 plants. The overall data show that Arabidopsis plants can respond to VCs emitted by phytopathogenic microorganisms by triggering pPGI-independent mechanisms.This work was supported by the Comisión Interministerial de Ciencia y Tecnología and Fondo Europeo de Desarrollo Regional, Spain (grant nos. BIO2010–18239 and BIO2013–49125–C2–1–P), by the Government of Navarra (grant no. IIM010491.RI1), by the I-Link0939 project from the Ministerio de Economía y Competitividad, by the Ministry of Education, Youth, and Sports of the Czech Republic (grant no. LO1204 from the National Program of Sustainability), by Palacky University institutional support, by predoctoral fellowships from the Spanish Ministry of Science and Innovation (to A.M.S.-L. and P.G.-G.), and by postdoctoral fellowships from the Public University of Navarra (to M.B. and G.A.).Peer Reviewe