Browsing Teses e dissertações by CNPq Subject "CIENCIAS EXATAS E DA TERRA::QUIMICA"
Now showing items 41-60 of 635
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Papaína imobilizada em partículas magnéticas: novos modelos de triagem de ligantes
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 29/03/2019)Cathepsins, human lysosomal enzymes, are associated with the development of various diseases, and cruzaine is an important enzyme in the development of the protozoan Trypanosoma cruzi, causes Chagas' disease. Cysteine ... -
Síntese e caracterização de vanadatos de prata e formação de nanopartículas de prata por eletro-Irradiação
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 19/02/2018)Due to its physico-chemical, bactericidal and photocatalytic properties, Silver vanadium oxides (SVOs) have attracted increasing attention due to their excellent physicochemical properties and diverse applications. The aim ... -
Synthesis of N-heterocycles and building blocks using multicomponent, photochemical and electrochemical approaches
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 17/02/2020)Multicomponent reactions and protocols mediated by light and electrochemistry are powerful tools for modern organic synthesis. Moreover, they obey several principles of green chemistry such as atom economy, catalysis, waste ... -
Desenvolvimento de fibras compósitas ultrafinas de policaprolactona, pectina e zeólita faujasita para acondicionamento de cloxacilina
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 27/03/2020)Bovine mastitis and hoof diseases are infections responsible for great economic losses in the Brazilian agricultural sector. Such losses are associated with a reduction in milk and meat production leading to extreme cases ... -
Synthesis of g-C3N4/Nb2O5 heterostructures: study of photocatalytic properties
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 22/04/2019)Semiconductors are promising catalysts for artificial photosynthesis, but to date, there is no consensus on the ideal photocatalyst for CO2 reduction. Among semiconductors used for CO2 reduction, Nb2O5 is a promising ... -
Estudo do método de obtenção de membranas assimétricas de polietersulfona contendo complexos de polieletrólitos
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 03/04/2020)Compared with traditional separation methods, polymeric membranes have low operation cost, fast separation rate and versatility. One interesting way of changing membrane properties is mixing additives into the polymeric ... -
Structural, morphological and optical properties of Ca10V6O25
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 05/05/2020)Modeling the structure and morphology of crystals is of great interest in the field of science and industry, as these factors are strongly linked in determining the properties of materials. That said, Ca10V6O25 compounds ... -
Diferenciação abiótica do metabolismo secundário em Aspergillus aculeatus e Penicillium brasilianum utilizando sais inorgânicos
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 31/03/2020)The biosynthetic potential of microorganisms for the production of secondary metabolites is limited by the routes encoded in their genome. However, although this potential is enormous, few of them are expressed under ... -
Sustainable synthesis of ciclopentene derivatives through multicomponent reactions in continuous flow regime
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 25/03/2020)Sustainable chemistry has gained relevance in recent years, not only in the fine chemical industry, but also in organic synthesis. This new conception of chemistry allows the development of environmentally friendly processes, ... -
Estudo de complexos metálicos de RuII, NiII, PdII e PtII com ligantes aciltioureias: atividade citotóxica e interação com biomoléculas
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 20/12/2019)In this work, two series of phosphine complexes containing acylthiourea ligands were synthesized, characterizatied and evaluatied of the cytotoxic activities. The first series of compounds was composed of complexes with ... -
Análises de compostos orgânicos não específicos no esgoto sanitário doméstico através das técnicas RMNq e HPLC-(UV/MS)-SPE-ASS-NMR
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 10/10/2014)The growth of industrial deployment and urbanization play a major role in the degradation of global environmental and resource depletion mainly in countries in development such as Brazil. The problems regarding water ... -
Estudo de inibidores naturais e sintéticos de cisteíno proteases
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 30/11/2018)This work describes in its first part the chemical study of the fungus Fusarium proliferatum looking for inhibitors of cysteine proteases, with two distinct approaches: i) The search for papain inhibitors, to understand ... -
Conversão de bioetanol em acetato de etila: efeitos das propriedades eletrônicas do metal e estruturais dos suportes nos catalisadores Cu-Ag/ZrO2 e Cu/ZrO2/Al2O3
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 18/07/2014)In both industry and academia the interest in biomass conversions into manufactured products has grown rapidly in recent years. Various products can be obtained from alcohol chemistry such as acetaldehyde, ethyl acetate, ... -
Formação inicial de professores de química: discursos, saberes e práticas
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 09/02/2015)Currently, the academic community and teachers formation courses are still living a period of transition between educational performance models that are supported by regulations, such as the resolution CNE/CP n° 01/2002, ... -
Cerâmicas de PZT modificadas com terras raras sintetizadas usando o método dos complexos oxidantes de peróxido (OPM) e sinterizadas por micro-ondas
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 23/07/2013)The Pb(Zr0,52Ti0,48)O3 solid solution in morphotropic phase and its modified (RExPb1-x)(Zr0,52Ti0,48O3) with RE = La, Pr or Nd and x = 0.05, 0.10, 0.15, 0.20, 0.30, 0.38 and 0.45 were satisfctorily prepared by oxidant ... -
Estudos sobre a síntese de ftalocianinas anfifílicas com baixa agregação em solução
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 16/01/2013)The present dissertation describe the studies conducted on the synthesis and photophysical properties of phthalocyanine dyes. The main propose of this work was to produce amphiphilic structures with low aggregation in ... -
Estudos sobre síntese de novos fotossensibilizadores a partir de produtos naturais porfirinóides
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 25/03/2013)In this work, we studied the structural transformation of methylpheophorbide a (2), a derivative of chlorophyll a (1) that was extracted from seaweed Spirulina maxima. The main propose of the study was to obtain compounds ... -
Síntese de clorinas anfifílicas com potenciais aplicações em terapia fotodinâmica
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 26/10/2012)The main objective of this work was to construct amphiphilic chlorins with low aggregation in a physiological environment. The synthesis and structural characterization of the target compounds were carried out, and preliminary ... -
Search for enzyme inhibitors in cerrado plants as strategy for the discovery of prototype drugs against neglected tropical diseases
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 26/03/2015)A primeira etapa deste trabalho de pesquisa envolveu uma triagem de extratos de plantas do cerrado paulista através de ensaios frente à arginase (ARG) de Leishmania amazonensis. Os resultados de inibição enzimática da ARG ... -
Estudo da cominuição na solubilidade da rocha fosfática Bayóvar
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 25/11/2014)Phosphorus is a vital element for both animals and plants. In recent decades, the population growth boosted the production of food and technologies applied to the crops. The intense use of land for monoculture depletes the ...