1000 resultados para Incidente químico
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Tesis de la Universidad Central (Madrid), Facultad de Farmacia, leída el 16-01-1865.
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Los discursos teóricos de la actualidad conciben la traducción como un acto ideológico de mediación intercultural. De este modo, rechazan la supuesta neutralidad y fidelidad al texto original o a la intención autorial de antaño, subvirtiendo al mismo tiempo la tradicional jerarquía entre original y traducción. Sin embargo, en el presente artículo sostengo que estos discursos teóricos por lo general desatienden otras relaciones de poder jerárquicas que afectan a la traducción situándola en una posición de inferioridad respecto a la paratraducción (Garrido Vilariño 2005), definida ésta como un acto de mediación por el cual se decide la presentación final del libro traducido en la sociedad meta. Para ilustrar las implicaciones de esta nueva jerarquía recurro al conflicto ideológico originado a partir de la traducción y paratraducción del género en dos reescrituras en gallego de la novela de Mark Haddon The Curious Incident of the Dog in the Night-Time. Current theoretical debates on Translation Studies define translation as an ideological act of intercultural mediation. In this way, notions such as neutrality or fidelity to the original text or to the author’s intent prove untenable, challenging the traditional hierarchy between the original text and its translation. However, it is my contention that these theoretical discourses tend to disregard other hierarchical power relationships that also affect translation, placing it in a position of inferiority against paratranslation (Garrido Vilariño 2005), the latter being an activity that determines crucially the final presentation of the translated book in the target society. I will illustrate the implications of this new hierarchy through an analysis of the ideological struggle that emerged from the translation and paratranslation of gender in two rewritings into Galician of the book The Curious Incident of the Dog in the Night-Time, by Mark Haddon.
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The educational games can act as a complementary tool in the teaching and learning as play an important role in the interaction of the student with knowledge, and encourage interrelationship between students and motivate them by the pursuit of knowledge. This research is intended to analyze the evidence of the students of distance education applied to semesters 2011.2 and 2012.2 for the purpose of to catalog the mistakes presented by the students, the contents of stereochemistry that attended the Chemistry of Life discipline. From the presented mistekes, develop an educational game, "walking the stereochemistry", addressing that content. The choice of stereochemistry content was due to the low number of found work in the literature, and for being one of organic chemistry content that generates learning difficulties, as it requires a mental visualization and manipulation of molecular structures, besides require observation and comparison ability by the students. The game was applied of Life Chemistry discipline of Nova Cruz Polo in semester 2013.2, with intention to verify the viability and applicability this tool for the development of motivation ability by the pursuit of knowledge by the students, as well as complement the didactical materials of the DE. Then, It was made available on the course page an opinion questionnaire to the participants of the game, as a way of to investigate the opinion their about the proposed strategy. To diagnose the contributions of the game on student learning, it was taken a comparative analysis of stereochemistry issues contained in didactic tests applied in 2013.2 semester students participating and not participating of the polo of Nova Cruz and was also compared with the tests applied at the poles of Extremoz, Currais Novos, Lajes and Caico. So the game can be considered an important resource to complement the teaching materials of distance education, because awoke the motivation for the search of knowledge and contributes to the learning of stereochemistry content.
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Ceramic materials the alumina base are large industrial applications. They are required for these products, specific characteristics obtained by following strict criteria during the manufacturing process. However, after life, not always these products are reused by a suitable waste management process. In ceramist context, advance research aimed at the reuse of waste aimed at obtaining ceramics and composite materials, with marked reduction of conventional raw materials. Aiming to generate scientific, technological and environmental contribution, this work studied to obtain a composite of alumina ceramic (Al2O3) and sodium beta alumina (NaAl11O17 ), and as starting materials the residue of the ceramic insulator of spark plugs, as a source alumina (Al2O3) powder and unusable sodium bicarbonate (NaHCO3) of fire extinguishers, as a source of sodium oxide (Na2O). The final ceramic product was obtained from a conventional mixture of sodium aluminum oxide in appropriate molar proportions. Sample spark plugs were obtained, discarded by lifetime, specific to a manufacturer, which, after passing through mechanical stress (grinding, magnetic purification, washing, drying and grinding the high energy), which resulted in residue powder with ceramic content of 84.34 % alumina (Al2O3), found by FRX chemical analysis, the phases present and identified by DRX. The dry chemical fire extinguisher, baking soda-based (NaHCO3) with expired, was obtained through direct collection of the waste generated during maintenance. Subjected to heat treatment at 120 °C , the NaHCO3 powder was decomposed in sodium oxide ( Na2O), which, subjected to chemical analysis (FRX) and mineralogical (DRX) revealed a content of 86.62 % sodium oxide (Na2O) . In the following steps the experimental procedure, chemical formulations were made on a molar basis of the starting material (1:9, 1:10 and 1:11 de Na2O/ Al2O3) inclusion of additives, milling parameters, sieve analysis, dilatometry, conformation of specimens, sintering in firing steps at 800 °C , 1000 °C and 1.200 °C with varying stays 30 , 60 and 120 minutes in each of the levels. The characterization of the final product was made by the following physical tests: water absorption, porosity, linear shrinkage, mineralogical analysis by DRX and microstructural analysis by MEV. A higher formation of sodium beta alumina (NaAl11O17), in sintered specimens in levels of 1.200 °C and 120 minutes, despite the prevailing coexistence of alpha phase alumina (Al2O3). From the results obtained opens up prospects for the reuse of waste studied in this work, the potter context and in other technological areas.