244 research outputs found

    The New Woman in Kate Chopin’s Short Fiction

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    The aim of this work is to analyze the transition from the True American Woman present in the 19th century towards the birth of the New Woman. It was through a historical background combined with the importance of literature that the establishment of that new ideal of woman was created. Kate Chopin was one of the first American authors to show the reality of women in their traditional spheres but moving to the rise of a new female identity. By means of her short fiction, Kate Chopin developed the New Woman ideal, which was embodied by the fictional characters she used in her short stories.El objetivo de este trabajo es hacer un análisis sobre la evolución de la mujer tradicional americana del siglo XIX hacia el nacimiento de la Nueva Mujer. A través de un contexto histórico y de la importancia de la literatura la creación del nuevo ideal de mujer acabaría por crearse. Kate Chopin fue una de las primeras escritoras americanas en mostrar la realidad de las mujeres en los ambientes más tradicionales, aunque evolucionando hacia la llegada de una nueva identidad femenina. A través de sus historias cortas, Kate Chopin desarrolló el modelo de la Nueva Mujer, encarnado por los personajes de ficción utilizados en sus historias.Departamento de Filología InglesaGrado en Estudios Inglese

    Los Wichís Matacos, una cultura aborigen del Gran Chaco argentino: fotografías en blanco y negro de una cultura condenada

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    Este artículo describe determinadas circunstancias históricas y ofrece datos etnográficos sobre el pueblo indígena Wichí o Mataco, que habita en la región de Salta, Argentina. Incorpora fotografías antiguas de sus gentes.This paper describes some historical background and ethnographical data of the Wichi or Mataco people, who live in the Salta region in Argentina. Antique pictures are also included

    Los Wichís Matacos, una cultura aborigen del Gran Chaco argentino: fotografías en blanco y negro de una cultura condenada

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    Este artículo describe determinadas circunstancias históricas y ofrece datos etnográficos sobre el pueblo indígena Wichí o Mataco, que habita en la región de Salta, Argentina. Incorpora fotografías antiguas de sus gentes.This paper describes some historical background and ethnographical data of the Wichi or Mataco people, who live in the Salta region in Argentina. Antique pictures are also included

    The cuticular hydrocarbons of the Triatoma sordida species subcomplex (Hemiptera: Reduviidae)

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    The cuticular hydrocarbons of the Triatoma sordida subcomplex (Hemiptera: Reduviidae: Triatominae) were ana- lysed by gas chromatography and their structures identified by mass spectrometry. They comprised mostly n-alkanes and methyl-branched alkanes with one-four methyl substitutions. n-alkanes consisted of a homologous series from C21-C33 and represented 33-45% of the hydrocarbon fraction; n-C29 was the major component. Methyl-branched alkanes showed alkyl chains from C24-C43. High molecular weight dimethyl and trimethylalkanes (from C35-C39) represented most of the methyl-branched fraction. A few tetramethylalkanes were also detected, comprising mostly even-numbered chains. Several components such as odd-numbered 3-methylalkanes, dimethylalkanes and trimethylalkanes of C37 and C39 showed patterns of variation that allowed the differentiation of the species and populations studied. Triatoma guasayana and Triatoma patagonica showed the most distinct hydrocarbon patterns within the subcomplex. The T. sordida populations from Brazil and Argentina showed significantly different hydrocarbon profiles that posed concerns regarding the homogeneity of the species. Triatoma garciabesi had a more complex hydrocarbon pattern, but it shared some similarity with T. sordida. The quantitative and qualitative variations in the cuticular hydrocarbons may help to elucidate the relationships between species and populations of this insect group.Instituto de Investigaciones Bioquímicas de La Plat

    Tracing the coevolution between <i>Triatoma infestans</i> and its fungal pathogen <i>Beauveria bassiana</i>

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    The chemical control of Triatoma infestans, the major Chagas disease vector in southern South America, has been threatened in the last years by the emergence of pyrethroid-resistant bug populations. As an alternative approach, the efficacy of the entomopathogenic fungus Beauveria bassiana to control T. infestans populations (regardless their pyrethroid susceptibility) has been demonstrated. Growing research efforts on the interaction between T. infestans and B. bassiana by molecular, ecological, biochemical and behavioral traits has allowed framing such interaction as an evolutionary arms race. This review will focus on the relationships established in this particular host-pathogen system, compiling available data on the relevance of fungal pathogenesis, insect behavior, population dynamics and human intervention to favor fungal dissemination in bug populations. The current snapshot shows the fungus ahead in the evolutionary arms race and predicts a promissory landscape for the biological control of Chagas disease vectors.Instituto de Investigaciones Bioquímicas de La PlataFacultad de Ciencias Exacta

    La magia de la ciencia en un aula de Educación Primaria

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    La finalidad de este trabajo es potenciar el estudio y gusto de las ciencias a través de un enfoque experimental. Para ello, se ha llevado a cabo un proyecto con alumnos pertenecientes al 3er curso de Educación Primaria, quienes han realizado experimentos científicos basados en trucos de magia, con el fin de que dicho alumnado se familiarice con las ciencias experimentales y se den cuenta de que estas también pueden ser divertidas y útiles para la vida cotidiana. A su vez, la propuesta se fundamenta en el aprendizaje internivelar así como en el proceso de evaluaciónGrado en Educación Primari

    Estudio sobre la formación del profesorado y la implementación de la metodología ABJ en los Centros Educativos de Castilla y León

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    Los objetivos principales del presente trabajo son: (a) explorar el grado de implementación del ABJ y la gamificación en los centros escolares de Castilla y León, (b) detectar las necesidades formativas del profesorado sobre el ABJ y la gamificación y (c) profundizar en la experiencia de docentes que aplican ABJ y/o Gamificación en su aula. Para ello nos basamos en un método mixto que abarca tanto el diseño cuantitativo como el cualitativo. Tras el análisis de los resultados concluimos que: (a) la metodología ABJ es utilizada por algunos profesores, pero apenas está implementada en los centros educativos y mucho menos en la PGA, (b) a la gran mayoría de los participantes les gustaría tener una mayor formación en esta metodología, y consideran que ésta debería ofertarse a través de la administración y (c) todos los maestros que utilizan el ABJ en sus clases han notado mejoras significativas en cuanto al aprendizaje, motivación, habilidades sociales, inclusión educativa y los procesos cognitivos de pensamiento.Máster en Investigación en Ciencias Sociales. Educación, Comunicación Audiovisual, Economía y Empres

    La magia de los sentidos en Educación Infantil

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    La finalidad de este trabajo es realizar una propuesta de intervención entre dos compañeras con objeto de implementarla en dos centros diferentes y establecer comparaciones con los resultados obtenidos. Se pretende potenciar la educación sensorial de los alumnos a través de las diferentes experiencias a las que se exponen, fomentando de este modo el aprendizaje de las ciencias. A su vez, se plantea una metodología activa basada en rutinas y destrezas a través de las cuales se visibiliza el pensamiento de los alumnos.Departamento de Didáctica de las Ciencias Sociales y ExperimentalesGrado en Educación Infanti

    Molecular characterization and expression analysis of a suite of cytochrome P450 enzymes implicated in insect hydrocarbon degradation in the entomopathogenic fungus Beauveria bassiana

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    The insect epicuticle or waxy layer comprises a heterogeneous mixture of lipids that include abundant levels of long-chain alkanes, alkenes, wax esters and fatty acids. This structure represents the first barrier against microbial attack and for broad-host-range insect pathogens, such as Beauveria bassiana, it is the initial interface mediating the host-pathogen interaction, since these organisms do not require any specialized mode of entry and infect target hosts via the cuticle. B. bassiana is able to grow on straight chain alkanes up to n-C33 as a sole source of carbon and energy. The cDNA and genomic sequences, including putative regulatory elements, for eight cytochrome P450 enzymes, postulated to be involved in alkane and insect epicuticle degradation, were isolated and characterized. Expression studies using a range of alkanes as well as an insect-derived epicuticular extract from the blood-sucking bug Triatomas infestans revealed a differential expression pattern for the P450 genes examined, and suggest that B. bassiana contains a series of hydrocarbon-assimilating enzymes with overlapping specificity in order to target the surface lipids of insect hosts. Phylogenetic analysis of the translated ORFs of the sequences revealed that the enzyme which displayed the highest levels of induction on both alkanes and the insect epicuticular extract represents the founding member of a new cytochrome P450 family, with three of the other sequences assigned as the first members of new P450 subfamilies. The remaining four proteins clustered with known P450 families whose members include alkane monooxygenases.Facultad de Ciencias Exacta

    Molecular characterization and expression analysis of a suite of cytochrome P450 enzymes implicated in insect hydrocarbon degradation in the entomopathogenic fungus Beauveria bassiana

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    The insect epicuticle or waxy layer comprises a heterogeneous mixture of lipids that include abundant levels of long-chain alkanes, alkenes, wax esters and fatty acids. This structure represents the first barrier against microbial attack and for broad-host-range insect pathogens, such as Beauveria bassiana, it is the initial interface mediating the host-pathogen interaction, since these organisms do not require any specialized mode of entry and infect target hosts via the cuticle. B. bassiana is able to grow on straight chain alkanes up to n-C33 as a sole source of carbon and energy. The cDNA and genomic sequences, including putative regulatory elements, for eight cytochrome P450 enzymes, postulated to be involved in alkane and insect epicuticle degradation, were isolated and characterized. Expression studies using a range of alkanes as well as an insect-derived epicuticular extract from the blood-sucking bug Triatomas infestans revealed a differential expression pattern for the P450 genes examined, and suggest that B. bassiana contains a series of hydrocarbon-assimilating enzymes with overlapping specificity in order to target the surface lipids of insect hosts. Phylogenetic analysis of the translated ORFs of the sequences revealed that the enzyme which displayed the highest levels of induction on both alkanes and the insect epicuticular extract represents the founding member of a new cytochrome P450 family, with three of the other sequences assigned as the first members of new P450 subfamilies. The remaining four proteins clustered with known P450 families whose members include alkane monooxygenases.Facultad de Ciencias Exacta
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