Browsing Teses e dissertações by Title
Now showing items 688-707 of 1062
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Investigação de processos colisionais e reacionais para cromo e vanádio em interface de espectrômetro de massa com plasma indutivamente acoplado
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 14/03/2013)The analytical capability of inductively coupled plasma mass spectrometers (ICPMSs) and their wide use in different fields of science are well known. However some drawbacks, such as the occurrence of isobaric and polyatomic ... -
Investigação do efeito alelopático dos extratos da aroeira-preta Myracrodruon urundeuva Freire Allemão no desenvolvimento das sementes das braquiárias Urochloa decumbens Stapf e Urochloa brizantha (Hochst. ex A. Rich) Stapf
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 20/12/2021)Brachiaria grasses have great importance in the livestock sector, however, these grasses are considered weeds that affect negatively the productivity of many crops. Field observations indicate that Myracrodruon urundeuva ... -
Investigação do mecanismo de formação de filmes porosos de TiO2 obtidos por anodização galvanostática
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 20/10/2011)In this work the experimental and theoretical aspects of the growth of titanium dioxide obtained by galvanostatic anodization were studied. The _lms were prepared by galvanostatic anodization of titanium, where the curve ... -
Investigação do potencial antimicrobiano de Casearia sylvestris sobre microrganismo endossimbionte de Diabrotica speciosa
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 27/03/2013)Diabrotica speciosa is a pest insect which occurs in most Brazilian states, standing out as one of the most important polyphagous pest of in grain crops. The understand of the role of the microbiota present in the digestive ... -
Investigação do potencial antimicrobiano de plantas do cerrado no controle de micro-organismos simbiótico da Diabrotica speciosa
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 28/03/2014)In the cerrado biome it is estimated approximately 160.000 species of plants, animals and fungi that, through their history have been exposed to complex interactions. Those interactions have created a complex system of ... -
Investigação do processo de corrosão do aço API 5L_X65 em meio de bicarbonato e cloreto utilizando serie temporal de imagens
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 21/11/2014)The carbon steel corrosion process used at in machines and pipelines of oil fields is mainly attributed to the presence of CO2, and H2S dissolved at solution. These compounds usually can to carry the corrosion type more ... -
Investigação in vitro do efeito da restrição proteica no metabolismo do albendazol em ratos e estudos de inibição do crescimento de células tumorais humanas pelos enantiômeros do albendazol sulfóxido
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 02/12/2011)This work presents an in vitro investigation of protein restriction in the metabolism of albendazole (ABZ). The study was conducted with microsomal fractions obtained from Wistar rats using a High Performance Multidimensional ... -
Investigating the potential of polysulfides obtained via inverse vulcanization as sustainable fertilizers
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 07/11/2022)Global food security is one of the biggest challenges we face today, and to this end, establishing sustainable strategies towards the development of more efficient and safer agricultural products is indispensable. Sulfur ... -
Isolamento e caracterização de enzimas ligninolíticas expressas pelos fungos Chaetomium cupreum URM 5066 e Mucor racemosus CBMAI 847
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 25/05/2018)The degradation of lignin, which together with cellulose and hemicellulose constitutes the cell wall of plants, is generally hampered by its complex structure, its high molecular weight and its insolubility. However, fungi ... -
Isolamento e identificação de compostos ativos de Vismia guianensis com potencial inseticida contra formigas cortadeiras
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 28/03/2024)Vismia guianensis, also known as "pau lacre," is chemically notable for the presence of a variety of secondary compounds in its organs, including roots, bark, and leaves. These compounds have garnered interest due ... -
Laser-induced breakdown spectroscopy (LIBS), wavelength dispersive x-ray fluorescence (WDXRF) and chemometrics: possibilities for analytical applications in food analysis
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 14/07/2020)This PhD thesis proposes evaluation of the possibilities and analytical applications of the laser-induced breakdown spectroscopy (LIBS) and wavelength dispersive x-ray fluorescence (WDXRF) techniques for the determination ... -
Levantamento de modelos mentais para verificação de aprendizagem significativa do conceito de equilíbrio químico em licenciandos em química
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 23/08/2019)The concept of equilibrium corresponds to one of the most complex and difficult topics of teaching and understanding in Chemistry. Although different researches has adopted the theme as an object of research and the important ... -
Ligação covalente coordenada boro-nitrogênio : um estudo comparativo entre moléculas derivadas do etano, eteno e etino orgânicos e inorgânicos
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 06/12/2016)This work consists in the theoretical analysis and comparison of some organic compounds and its similar inorganics, through the change of the BN pair, and, in some cases, the BP pair, in the place of CC pair. First, ... -
Ligação entre as propriedades estruturais, ópticas, eletrônicas e atividade fotocatalítica de Ag3PO4:Mo
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 25/09/2018)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 ... -
O lúdico em Química : jogos e atividades aplicados ao ensino de Química
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 01/04/2004)In this work games and ludic activities are applied to chemistry teaching. In the introduction, the constructivism aspects of the theories of cognitive development are presented. Then, the ideas and theories of both ludic ... -
Magnetic immobilized enzymes microreactors for in-vitro metabolism assays and/or biocatalysis applications
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 31/03/2023)Cytochrome P450s are a superfamily of hemeproteins widely used to study phase I reactions in in vitro drug metabolism assays and to correlate them with in vivo outcomes. In addition, this class of enzymes can be involved ... -
Magnetismo a temperatura ambiente em polímeros derivados de politiofeno sintetizados eletroquimicamente.
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 08/10/2003)In this thesis two polymers obtained from alkyl derivatives of thiophene, poly(3-methylthiophene) and poly(3-hexylthiophene) were studied. The effects of preparation variables on their electrochemical properties using ... -
Mapa de caracterização do texto científico : produção e funcionamento em disciplinas de química do ensino superior
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 24/01/2012)The main objectives of this research were to develop and to implement a tool ‐ the Characterization Map of Scientific Text ‐ which could assist students in recognizing the structural and rhetorical aspects of ... -
Mapeamento da pesquisa no campo da formação de professores de química no Brasil (2000-2010)
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, , 03/09/2013)The purpose of this paper is to map out academic production in the form of theses and dissertations on the topic of chemistry teacher education, submitted to graduate programs in chemistry, education, and teaching of science ... -
Mapeamento do processo de nucleação e crescimento do peptídeo beta amilóide pelo complexo luminescente cis-[Ru(phen)2(Apy)2]2+
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Química - PPGQ, Câmpus São Carlos, 24/09/2018)Amyloid beta (Ab) is a peptide fragment highly prone to aggregation that deposits in the extracellular medium and is directly associated with the development and progression of a number of nervous system diseases, in ...