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O ambiente como contexto para o ensino das transformações químicas
(Universidade Federal de São Carlos, 2011-10-17)
Through the difficulties that were found in the educational process of Chemistry, nowadays, and in a situation which school contents are not related with students life, this study investigated the contributions of problematic ...
Hematita: um novo método de síntese para a indústria
(Universidade Federal de São Carlos, 2011-08-04)
The motivation in studying the properties of iron oxides was due to difficulty in obtaining colored pencils in shades of brown, with good coverage. To carry out this work we used pigments for industrial use Icra provided ...
Obtenção de nanopartículas coloidais de trifluoreto de itérbio
(Universidade Federal de São Carlos, 2011-02-16)
Radiopaque dental composites are materials that have attracted great scientific and technological interest due to their different optical and mechanical properties when compared to polymer-based dental materials. In this ...
Identificação dos componentes do óleo essencial de laranja (Citrus sinensis L. Osbeck) e proposição de procedimentos industriais para a obtenção de produtos diferenciados
(Universidade Federal de São Carlos, 2011-10-21)
Brazilian exports of orange essential oil are responsible for moving approximately seventy-four million dollars, representing a significant portion of Brazilian business, and deserve the attention from the companies involved ...
Ensino e aprendizagem significativa do conceito de ligação química por meio de mapas conceituais
(Universidade Federal de São Carlos, 2011-02-04)
As a consequence of student difficulties related to concepts of greater abstraction of Chemistry, the concept of Meaningful Learning according to the theory of Ausubel was used in this work. From it, the twodimensional ...
Desenvolvimento de um reator fotoquímico microcontrolado, utilizando diodos emissores de luz (LEDs) como fonte de excitação luminosa
(Universidade Federal de São Carlos, 2011-02-11)
Aiming to contribute to the technological development of our country and meet the domestic demand for photochemical reactors, we have considered the possibility of developing a national product. The development of this ...
Argumentação no ensino de Química: textos de divulgação científica desencadeando debates
(Universidade Federal de São Carlos, 2011-02-02)
A large body of science education literature suggests that argumentation plays a central role in science and should therefore maintain the same centrality in science education. However, opportunities for students to engage ...
Aplicação de ZnO nanoestruturado na agricultura
(Universidade Federal de São Carlos, 2011-03-25)
In this study we
attempted to produce two fertilizers with ZnO nanoparticles and also attempted to
characterize and apply them in order to establish a comparison between the
distribution of particle sizes and levels of ...