Buscar
Itens para a visualização no momento 431-440 of 605
Avaliação de novas arquiteturas de carbono para o desenvolvimento de sensores eletroquímicos para a determinação de espécies de interesse em diferentes matrizes de amostras
(Universidade Federal de São Carlos, 2019-03-01)
In this doctorate work the efforts were expended in the electrochemical study and electroanalytical application of electrochemical sensors based on two carbonaceous structures: diamond-like carbon (DLC) and carbon black ...
Síntese assimétrica dos componentes do feromônio sexual da lagarta-parda, Thyrinteina arnobia (Lepidoptera: Geometridae)
(Universidade Federal de São Carlos, 2013-01-31)
The pheromones play an important role in chemical communication between alive organisms. They can be used in agriculture to pest control. The brown-caterpillar, Thyrinteina arnobia, is considered in Brazil a major pest of ...
Estudo teórico das propriedades ópticas dos BaWO4 e PbWO4
(Universidade Federal de São Carlos, 2012-09-21)
Among the scheelites, we highlight the Barium Tungstats (BaWO4) and lead tungstate (PbWO4). These compounds can be synthesized by various synthetic routes. However, we can highlight the hydrothermal synthesis method assisted ...
Ligação entre as propriedades estruturais, ópticas, eletrônicas e atividade fotocatalítica de Ag3PO4:Mo
(Universidade Federal de São Carlos, 2018-09-25)
Silver phosphate (Ag3PO4) has received considerable attention from the scientific community due to photocatalytic and photoluminescent properties. However, some alternatives were sought to improve the performance of these ...
Combinação de reações organocatalíticas e multicomponentes para a síntese de sistemas heterocíclicos e moleculas híbridas
(Universidade Federal de São Carlos, 2019-02-08)
Small enantiomerically pure or enriched organic molecules are key starting materials
in organic synthesis. Chiral building blocks are in high demand in the overall
synthesis of complex natural products and in the discovery ...
Nitrogen and Phosphorus Nanocomposite Fertilizers: Synthesis, Particle Size and Matrix Effects
(Universidade Federal de São Carlos, 2018-02-26)
With high agricultural productivity, is necessary a chemical fertilization of soil, and nitrogen and phosphorus are the macronutrients indispensable for plants. In this sense, the current demand for fertilizer requires ...
Desenvolvimento de nanofibras poliméricas por fiação por sopro em solução visando aplicação em engenharia de tecido
(Universidade Federal de São Carlos, 2017-11-09)
Tissue engineering is now essential for medical applications, such as in implants for biomedical devices, artificial organs, healing and skin regeneration. The success of these applications depends on the development of ...
Complexos de metais de transição: aplicações no tratamento e diagnóstico da doença de Alzheimer
(Universidade Federal de São Carlos, 2014-11-26)
Currently there are about 35.6 million people diagnosed with Alzheimer's
disease (AD) in the world, and it is expected that this number will double by 2050.
Causes of Alzheimer's disease are not yet known, but their ...
Estudo químico das flores de Hortia oreadica (Rutaceae)
(Universidade Federal de São Carlos, 2018-07-27)
The present work describes the analysis of apolar and polar extracts from flowers of Hortia oreadica, a species of the family Rutaceae. Since these flowers had not been widely studied, and due to the chemosystematic value ...
Potencialidades das técnicas com fonte de plasma e da espectrometria de absorção atômica em forno de grafite de alta resolução com fonte contínua para análise de fertilizantes
(Universidade Federal de São Carlos, 2018-04-26)
Each year, Brazil sets records on agricultural productivity, which significantly increases the use of fertilizers in crops to provide the essential nutrientes. However, fertilizers can also be sources of toxic elements ...