Navegando por Autor "Barros Filho, Djalma de Albuquerque"
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Item Aplicação de ferramentas online no ensino de física para corrigir deficiências dos fundamentos de matemática em alunos do cursos integrado(Instituto Federal de Educação Ciência e Tecnologia de Alagoas, 2021-12-13) Barros Filho, Djalma de Albuquerque; Oliveira, Marcos Henrique Abreu de; http://lattes.cnpq.br/7597524437699021; Limeira, Ana Cristina Santos; http://lattes.cnpq.br/8492241199102646; Gomes, Maria Amábia Viana; http://lattes.cnpq.br/9432338329387792This work deals with the use of online tools for Physics teaching. Although there are a variety of programs, there is a lack of integration between them, which makes meaningful learning, in this subject, quite difficult as predicted by Ausubel (AUSUBEL, 1978). Another aspect that also makes such learning difficult is that there is no interaction between the teacher and the students in the virtual classes, and the contents are taught in a quickly way, since the teacher is not allowed to develop their reasoning as they would do in a face-to-face class. Thus, the following research problem can be seen: to what extent will the use of teaching platforms, associated with technological tools, have a significant influence on the significant learning of physics by students in the first year of Technical Education at Federal Institute from Alagoas (IFAL)? Thus, the g similar way to what happens in a face-to-face class. In this sense, it is suposed that an aspect that oals of this work are to establish online contact with students in order to use tools from Google Classroom (EDUCADOR DO FUTURO, 2020), SIGAA and CANVA(ALPHESIS, 2016); another objective is to demonstrate how the use of these tools allows the teacher to develop their reasoning in ahinders the teaching and learning process is the lack of direct interaction between the teacher and the student when performing exercises. Thus, it is believed that if the teacher is able to write formulas and draw objects, using the Canva tools, students will be also able to perform exercises with aesthetics superior to that commonly used in Microsoft Word, in addition to using the virtual wall, which will favor the analysis of the assimilation to the content by groups of students, thus resulting in a reduction in their mathematical fragility.Item Sesnsibilização de pós de TIO2 modelados por esferas de látex para aplicação em células solares(Instituto Federal de Educação Ciência e Tecnologia de Alagoas, 2018-08-15) Silva, Antony Ernesto dos Santos; Barros Filho, Djalma de Albuquerque; http://lattes.cnpq.br/9259521036882745; Freitas, Johnnatan Duarte de; http://lattes.cnpq.br/4999402869058858; Costa, Alex Emanuel Barros; http://lattes.cnpq.br/2231272728491909; Silva, Antonio Osimar Sousa da; http://lattes.cnpq.br/5289388662589522The world's energy supply is derived from the burning of fossil fuels, in particular oil, producing greenhouse gases, which causes damage to the ozone layer, in addition to changing the planet's temperature and to threatening life in general. Therefore it is necessary to use natural, renewable energy sources, such as solar energy for example. Brazilian Northeast has one of the highest rates of solar radiation in the country, which makes it feasible to use solar energy in this region. Thus, this work has the objective of presenting the formation of Dye Sensitized Solar Cells (DSSCs), with semiconductor films made of titania (TiO2) powders, templated by latex spheres. These films are sensitized by ruthenium dye complexes, which makes their use relatively applicable in the absorption of solar energy. It will be possible later to convert solar energy into electric energy through the photovoltaic effect. TiO2 powders used in this work were obtained from two latex bead molds: sedimented powders and solvent controlled evaporation films (ECS). The results show that TiO2 modeling by both molds was not efficient, because the film presented a compact surface, decreasing the porosity of titania film. This can lead to a non-anchoring of the dye sensitizer on the surface of the semiconductor film and also poor penetration of the redox pair therein and the final result is a low absorption of sun light by the film. Another factor to decrease titania sensitization was the presence of carbon in during densification process, since the carbon was not completely removed. Carbon makes a surface layer that competed with the sensitizing dye during its anchoring in semiconductor film and increased the recombination of electron-hole pair. It is concluded that topography of látex beads and the presence of carbon during calcination of TiO2 powders made it difficult to absorb light when sensitized, becoming a challenge its application in DSSCs. An alternative to solve this problem is the use of TiO2 powders when obtained through templates coated on microscope glass slides by ECS technique. This will ensure an efficient porosity of titania films