Search
Now showing items 31-40 of 653
Preparação, caracterização e testes de filmes bicamadas de polipirrol-poli(DMcT) sobre fibra de carbono para eletrodos de supercapacitores
(Universidade Federal de São Carlos, 2013-10-25)
The aim of this work was to synthesize and characterize bilayered films of polypirrole and poly(2,5- dimercapto-1,3,4-thiadiazole) poly(DMcT) as possible materials for supercapacitor electrodes. Composites of carbon ...
Emprego de técnicas espectroanalíticas para a análise de amostras de solos e de coprólitos : análise de textura e exploratória
(Universidade Federal de São Carlos, 2015-08-21)
In this
study, samples of coprolites (fossilized feces) were analyzed in LIBS (Laser-Induced
Breakdown Spectroscopy) to evaluate the chemical profile in these samples using
hyperspectral images, which enable us to assess ...
Padronização de extratos de folhas de amoreira com potencial fitoestrogênico para uso no tratamento dos sintomas do climatério
(Universidade Federal de São Carlos, 2015-08-13)
Mulberry leaves are commonly used by women to alleviate hot flashes, shivering and night sweats. These symptoms appear due to the irregular
estrogen secretion by ovaries during climacteric and are often alleviated using ...
Desenvolvimento de procedimentos analíticos para a avaliação de nanosuspensões de fertilizantes e efeitos sobre a produtividade de culturas agrícolas
(Universidade Federal de São Carlos, 2016-04-04)
This study was carried out in three steps: 1) production and characterization of nanosuspensions; 2) development of analytical methods for elemental analysis of fertilizers and plant tissues and comparison between ...
Propriedades elétricas e estruturais do niobato de potássio e estrôncio obtido pelo método de Pechini
(Universidade Federal de São Carlos, 2015-06-19)
The
search for new technologies more efficient and environmentally sustainable,
triggered the search for new materials and synthesis routes that present a low
economic and energy impact. In this context, potassium and ...
Multicomponent reactions in the discovery of organocatalysts and the diversification of organocatalytic approaches
(Universidade Federal de São Carlos, 2015-06-19)
This thesis reports the development of multicomponent approaches directed to specific objectives: a) the discovery of new and efficient peptide-based catalyst for asymmetric
transformations and b) the synthesis of ...
Funcionalização e caracterização do carbon black vulcan XC–72R para aplicações em biossensores baseados em inibição enzimática
(Universidade Federal de São Carlos, 2016-02-18)
In this work, carbon black Vulcan XC-72R was functionalized using five different treatments, the oxidizing agents employed were: nitric acid, sulfuric acid and hydrogen peroxide. The physical characterization of functionalized ...
Preparo e caracterização morfológica, microestrutural e magnética de eletrodepósitos de NiFe e NiFeCu
(Universidade Federal de São Carlos, 2016-02-03)
This work presents the investigation of the correlation between microstructural, morphological and
compositional properties with the magnetic behavior of NiFe and NiFeCu alloys. A 23 factorial design was carried out to ...
Desenvolvimento e aplicação de análise de especiação química de selênio em amostras agropecuárias
(Universidade Federal de São Carlos, 2016-01-28)
Selenium is essential in animal nutrition; it ensures proper functioning of musculoskeletal, reproductive, and immune system. The intake requirement range for Se is narrow and low levels of Se are required. In order to ...
Desenvolvimento de procedimentos eletroanalíticos para a determinação simultânea de analgésicos em formulações farmacêuticas e fluidos biológicos empregando o eletrodo de diamante dopado com boro
(Universidade Federal de São Carlos, 2015-07-30)
In this master dissertation, electroanalytical procedures for the simultaneous determination of analgesics paracetamol (PAR) and codeine (COD) and, PAR and tramadol (TRA) in pharmaceutical samples and biological fluids ...