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Estudo de reações sólido/líquido e sólido/gás em altas temperaturas: o caso das reações do PbSO4EPbO no processo pirometalúrgico de reciclagem de Pb a partir de baterias chumbo-ácido
(Universidade Federal de São Carlos, 2012-02-10)
This report presents a study on there reactions and transformations occurring at high temperatures with the two main constituents of scrap lead-acid batteries (Pb/H2SO4) oxide and lead sulphate (PbSO4 and PbO). It was ...
Titanatos de alcalinos terrosos : a ordem associada à desordem
(Universidade Federal de São Carlos, 2010-02-26)
The microwave-assisted hydrothermal method was implemented in the synthesis of alkaline earth titanates under ABO3 stoichiometric known as perovskites, being efficient and innovative. For that, OH- groups played an important ...
Avaliação e caracterização da borracha natural de diferentes clones de seringueira cultivados nos estados de Mato Grosso e Bahia
(Universidade Federal de São Carlos, 2010-03-02)
Natural rubber (NR) is a basic raw material used in the manufacture of a wide range of rubber goods. Usually both quality and productivity levels of Brazilian NR are lower than the imported NR. This is due to a lack of ...
Estudo de casos na promoção da argumentação sobre questões sócio-científicas no ensino superior de química
(Universidade Federal de São Carlos, 2010-03-15)
This study was guided mainly in the application of the case study method of instruction. We analyzed the students‟ argumentation on socio-scientific issues in an undergraduate chemistry course in Brazil. Firstly, we ...
Eletrossíntese de nanoestruturas de polianilina
(Universidade Federal de São Carlos, 2010-01-18)
The potentiodynamic and potentiostatic electrochemical synthesis were performed for the eletrosynthesis of nanofibers and nanoparticles of polyaniline on gold electrodes without the use of physical or chemical templates. ...
Especiação de metais e sua interação com a matéria orgânica dissolvida em um reservatório artificial
(Universidade Federal de São Carlos, 2010-05-28)
Environmental degradation of aquatic ecosystems stimulates investigations about the interactions between dissolved organic matter, trace metals and the biota. This study aimed to investigate the speciation of cadmium, ...
Desenvolvimento de genossensores utilizando microbalança de cristal de quartzo e técnicas eletroquímicas
(Universidade Federal de São Carlos, 2011-02-18)
The proliferation of toxic algae in different oceans leads to great economic losses and environmental damage the mortality of marine animals such as mollusks and fish due to neurotoxins that they release into the environment. ...
Degradação eletrooxidativa e biológica de corantes em meios aquosos
(Universidade Federal de São Carlos, 2011-04-01)
The electrochemical degradation of the Reactive Red 141, Acid Blue 62 (AB 62), Direct Black 22, and Disperse Orange 29 dyes in a 0.1 M Na2SO4 solution with and without NaCl addition was investigated with Ti-Pt/β-PbO2 ...
Estudo da interação de íons cobre e cromo com eletrodos de pasta de carbono modificada e polianilina em meio aquoso por técnica de voltametria de pulso diferencial
(Universidade Federal de São Carlos, 2010-05-11)
The electrochemical sensors to measure metallic ions in water and waste water are among the most important areas of research nowadays. The environmental control and monitoring chalenges that stimulated the aim of this work ...
Preparação e caracterização mecânica, térmica e elétrica de misturas de poliuretano derivado do óleo de mamona e poli (o- metoxianilina) para avaliação na aplicação como sensores para língua eletrônica
(Universidade Federal de São Carlos, 2010-07-28)
The incorporation of conducting polymer into a conventional polymer matrix has received considerable attention in the last decade because of the possibility of combining the good processability and mechanical performance ...