53 research outputs found

    Adapted materials for teaching english to blind and visually impaired students.

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    During the training process as future English teachers, it was possible to observe that there are many challenges teachers have to face in the different classrooms they are assigned to teach their classes. One of them was that in the English classes at Uniminuto, where students with diverse abilities and regular ones attend to this course in a same classroom, it was hard for students with visual difficulties to do the activities proposed for the classes. It was because the book was an essential aspect in the classes and, as they have a visual limitation, they could not follow the class in the same way as their sighted peers and, therefore, they were not able to do the activities in the same way. This research project was carried out with the aim of examining the contribution that using adapted materials made to teaching English to blind and visually impaired students. In order to know that, there were created some activities according to the topics that had to be taught in the course and there were designed materials for all students that helped them develop the activities proposed for the classes

    Synthesis and Characterization of Mechanical Alloyed Mg-Ni-Ca and Mg-Cu-Ca Amorphous Alloys

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    AbstractMagnesium and its alloys are widely recommended for automotive, electronics and biomedical industries due to their strength to weight ratio. The mechanically alloyed magnesium with Ni, Cu and Ca alloys exhibits superior properties. In this work, the ternary Mg70Ni10Ca20 and Mg85Cu10Ca5 alloys were synthesized by mechanical alloying for 10h in SPEX mill with 10:1 ball to powder ratio under argon (Ar) atmosphere. Their structural and phase transformation with respect to milling time and composition were studied by X-ray diffraction (XRD), scanning electron microscopy and energy dispersive X-ray spectroscopy. The XRD pattern showed the formation of amorphous with nano crystalline peaks. The Mg2Cu and CaCu intermetallic phases were identified in Mg85Cu10Ca5 alloy and Mg2Ni and MgNi2 intermetallic compounds were identified in Mg70Ni10Ca20 alloy. A crystallite size of 44.45nm was measured from the α-Mg XRD peak in Mg-Cu-Ca alloy, and 45.59nm was measured for the Mg2Ni phase in Mg-Ni-Ca alloy

    Estrategias de elaboración y el nivel inferencial de comprensión lectora en los estudiantes de una universidad privada de Lima- 2021

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    La presente investigación lleva por título “Estrategias de elaboración y el nivel inferencial de comprensión lectora en los estudiantes de una universidad privada de Lima-2021”, tuvo como objetivo determinar la relación que existe entre estrategias de elaboración y el nivel inferencial de comprensión lectora en los estudiantes de una universidad privada. El tipo de investigación fue de enfoque cuantitativo, de tipo básica sustantiva y diseño no experimental, descriptivo correlacional y transversal. La población fue determinada en 100 con una muestra de 85 estudiantes de una universidad privada de Lima. La técnica para la recolección de datos fue la encuesta, utilizando como instrumentos cuestionarios, cuya validez se estableció mediante juicio de expertos y la confiabilidad mediante la valoración de su consistencia interna, obteniendo un alfa de Cronbach=0.904 para el cuestionario de estrategia de elaboración y un KR20=0.806 para el cuestionario de nivel inferencial de comprensión lectora. Los resultados evidenciaron que existe relación significativa (rho=,852**; p<0,05), entre las estrategias de elaboración y el nivel inferencial de comprensión lectora en estudiantes de una universidad privada de Lima-2021, lo que demuestra que a mayor uso de estrategias de elaboración, mayor desempeño en el nivel inferencial de comprensión lectora

    Adapted materials for teaching english to blind and visually impaired students.

    Get PDF
    During the training process as future English teachers, it was possible to observe that there are many challenges teachers have to face in the different classrooms they are assigned to teach their classes. One of them was that in the English classes at Uniminuto, where students with diverse abilities and regular ones attend to this course in a same classroom, it was hard for students with visual difficulties to do the activities proposed for the classes. It was because the book was an essential aspect in the classes and, as they have a visual limitation, they could not follow the class in the same way as their sighted peers and, therefore, they were not able to do the activities in the same way. This research project was carried out with the aim of examining the contribution that using adapted materials made to teaching English to blind and visually impaired students. In order to know that, there were created some activities according to the topics that had to be taught in the course and there were designed materials for all students that helped them develop the activities proposed for the classes

    Caracterización morfológica de cobre depositado por electrólisis influenciado por presencia de iones cloruros

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    En el presente trabajo se estudia el efecto de la densidad de corriente sobre la morfología del cobre depositado por electrólisis desde una solución ácida de sulfato de cobre en presencia y ausencia de iones cloruros como impurezas. Para ello, técnicas de cronopotenciometría y microscopía electrónica de barrido son utilizadas. El estudio revela que, para ambas situaciones en presencia y ausencia de iones cloruros, los perfiles temporales del potencial catódico son desplazados en dirección catódica con el incremento de la densidad de corriente, los cuales están asociados a la ocurrencia simultánea de reacciones catódicas durante la electrólisis de cobre. Los resultados morfológicos demuestran una influencia directa de la densidad de corriente representada por transiciones en los mecanismos de electrocristalización asociadas a etapas de nucleación y crecimiento de las partículas depositadas. Los cambios en los patrones morfológicos son corroborados por un depósito de cobre tipo dendrítico y granular en la solución de electrolitos sin iones cloruros, a diferencia del depósito de cobre observado en la solución de electrolitos con presencia de iones cloruros los cuales se observa una morfología dendrítica y laminada. Estos resultados claramente demuestran aspectos mecanísticos sobre la electrólisis de cobre. Palabras clave: Densidad de corriente, Iones cloruros, Morfología, Potencial catódico.

    Impacto psicosocial de la estética dental en estudiantes del nivel secundario de una institución educativa de Moquegua 2021

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    El objetivo del presente trabajo fue determinar el impacto psicosocial de la estética dental en estudiantes del nivel secundario de una institución educativa de Moquegua 2021. La investigación fue de tipo básica, de alcance descriptivo, y de diseño no experimental y de corte transversal. La muestra estuvo conformada por 70 estudiantes, quienes completaron el cuestionario del Impacto Psicosocial de la Estética Dental (PIQAD), que tuvo como finalidad determinar el nivel de impacto psicosocial de la estética dental de los escolares. Se obtuvieron como resultados que 66 (94,3%) escolares presentaron un bajo impacto psicosocial de la estética dental mientras que tan solo 4 (5,7%) estudiantes presentaron un alto impacto. En cuanto al género, 41 (58,6%) de las estudiantes mujeres 25 y (35,7%) de estudiantes varones presentaron un bajo impacto psicosocial, no se observó una asociación estadísticamente significativa entre el impacto psicosocial y el género (p= 0,141). Con respecto a la edad, se encontró que 5 (7,6%) estudiantes de 12 años, 10 (15,2%) estudiantes de 13 años, 9 (13,6%) estudiantes de 14 años, 14 (21,2%) estudiantes de 15 años, 24 (36,4%) estudiantes de 16 años, 3 (4,5%) estudiantes de 17 años y 1 (1,5%) estudiante de 18 años presentaron un bajo impacto, demostrándose que existe una relación estadística significativa entre la edad y el impacto psicosocial (p=0,000). Se concluye que los alumnos del nivel secundario de un centro educativo de Moquegua presentaron un bajo impacto psicosocial de la estética dental

    Unified Solutions

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    El presente proyecto aborda la problemática de la empresa La Campiña S.A.S. acerca del manejo de la información de los equipos de cómputo, desde un punto de vista racional y lógico, donde se evaluó el beneficio de reemplazar procesos manuales por otros estandarizados y de mejor control. Con ayuda de las herramientas de desarrollo JAVA, MySQL Y PrimeFaces, se dio solución a los inconvenientes antes mencionados y además de eso se entrega un aplicativo de buena capacidad de respuesta y de fácil manejo. Para el desarrollo de esta solución informática se invirtieron cuatro meses de trabajo de los tres participantes en los cuales se asignaron tareas y realizaron controles periódicos, que buscaban hallar errores y corregirlos en la medida que fuera necesario

    Unified Solutions

    Get PDF
    El presente proyecto aborda la problemática de la empresa La Campiña S.A.S. acerca del manejo de la información de los equipos de cómputo, desde un punto de vista racional y lógico, donde se evaluó el beneficio de reemplazar procesos manuales por otros estandarizados y de mejor control. Con ayuda de las herramientas de desarrollo JAVA, MySQL Y PrimeFaces, se dio solución a los inconvenientes antes mencionados y además de eso se entrega un aplicativo de buena capacidad de respuesta y de fácil manejo. Para el desarrollo de esta solución informática se invirtieron cuatro meses de trabajo de los tres participantes en los cuales se asignaron tareas y realizaron controles periódicos, que buscaban hallar errores y corregirlos en la medida que fuera necesario

    Fabrication and arc erosion behavior of Ag-SnO2-ZnO electrical contact materials

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    This study investigated the synthesis of Ag-SnO2-ZnO by powder metallurgy methods and their subsequent electrical contact behavior. The pieces of Lambda g-SnO2-ZnO were prepared by ball milling and hot pressing. The arc erosion behavior of the material was evaluated using homemade equipment. The microstructure and phase evolution of the materials were investigated through X-ray diffraction, energy-dispersive spectroscopy and scanning electron microscopy. The results showed that, although the mass loss of the Ag-SnO2-ZnO composite (9.08 mg) during the electrical contact test was higher than that of the commercial Ag-CdO (1.42 mg), its electrical conductivity remained constant (26.9 +/- 1.5% IACS). This fact would be related to the reaction of Zn2SnO4's formation on the material's surface via electric arc. This reaction would play an important role in controlling the surface segregation and subsequent loss of electrical conductivity of this type of composite, thus enabling the development of a new electrical contact material to replace the non-environmentally friendly Ag-CdO composite

    Estimates of the global, regional, and national morbidity, mortality, and aetiologies of lower respiratory infections in 195 countries, 1990-2016: a systematic analysis for the Global Burden of Disease Study 2016.

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    BACKGROUND: Lower respiratory infections are a leading cause of morbidity and mortality around the world. The Global Burden of Diseases, Injuries, and Risk Factors (GBD) Study 2016, provides an up-to-date analysis of the burden of lower respiratory infections in 195 countries. This study assesses cases, deaths, and aetiologies spanning the past 26 years and shows how the burden of lower respiratory infection has changed in people of all ages. METHODS: We used three separate modelling strategies for lower respiratory infections in GBD 2016: a Bayesian hierarchical ensemble modelling platform (Cause of Death Ensemble model), which uses vital registration, verbal autopsy data, and surveillance system data to predict mortality due to lower respiratory infections; a compartmental meta-regression tool (DisMod-MR), which uses scientific literature, population representative surveys, and health-care data to predict incidence, prevalence, and mortality; and modelling of counterfactual estimates of the population attributable fraction of lower respiratory infection episodes due to Streptococcus pneumoniae, Haemophilus influenzae type b, influenza, and respiratory syncytial virus. We calculated each modelled estimate for each age, sex, year, and location. We modelled the exposure level in a population for a given risk factor using DisMod-MR and a spatio-temporal Gaussian process regression, and assessed the effectiveness of targeted interventions for each risk factor in children younger than 5 years. We also did a decomposition analysis of the change in LRI deaths from 2000-16 using the risk factors associated with LRI in GBD 2016. FINDINGS: In 2016, lower respiratory infections caused 652 572 deaths (95% uncertainty interval [UI] 586 475-720 612) in children younger than 5 years (under-5s), 1 080 958 deaths (943 749-1 170 638) in adults older than 70 years, and 2 377 697 deaths (2 145 584-2 512 809) in people of all ages, worldwide. Streptococcus pneumoniae was the leading cause of lower respiratory infection morbidity and mortality globally, contributing to more deaths than all other aetiologies combined in 2016 (1 189 937 deaths, 95% UI 690 445-1 770 660). Childhood wasting remains the leading risk factor for lower respiratory infection mortality among children younger than 5 years, responsible for 61·4% of lower respiratory infection deaths in 2016 (95% UI 45·7-69·6). Interventions to improve wasting, household air pollution, ambient particulate matter pollution, and expanded antibiotic use could avert one under-5 death due to lower respiratory infection for every 4000 children treated in the countries with the highest lower respiratory infection burden. INTERPRETATION: Our findings show substantial progress in the reduction of lower respiratory infection burden, but this progress has not been equal across locations, has been driven by decreases in several primary risk factors, and might require more effort among elderly adults. By highlighting regions and populations with the highest burden, and the risk factors that could have the greatest effect, funders, policy makers, and programme implementers can more effectively reduce lower respiratory infections among the world's most susceptible populations. FUNDING: Bill & Melinda Gates Foundation
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