Buscar
Itens para a visualização no momento 31-40 of 63
Aplicação de imagens digitais e técnicas espectroanalíticas combinadas com quimiometria para detecção e quantificação de adulteração em leite bovino
(Universidade Federal de São Carlos, 2013-02-22)
Milk provides essential nutrients (carbohydrate, fat, protein, minerals and vitamins) of great nutritional relevance for humans, particularly during childhood. Nowadays, the occurrence of milk adulteration is a major issue ...
Propriedades fotoluminescentes e fotocatalíticas dos tungstatos de ferro e manganês
(Universidade Federal de São Carlos, 2013-03-01)
MnWO4 and FeWO4 compounds were synthesized, employing AOT, SDS, CTAB, EG, and PEG 200 as surfactants agents, which was proved by X ray diffraction. Furthermore, these compounds were also characterized by vibrational ...
Estudos estruturais de compostos de telúrio e de docking em catepsinas B, K, L, S
(Universidade Federal de São Carlos, 2013-03-28)
Cathepsins are lysosomal cysteine proteases responsible for protein turnover in our organism. In non-lysosomal environment they are related to a number of diseases such as cancer, Alzheimer, autoimmune diseases and ...
Desenvolvimento de um potenciostato/galvanostato portátil e eletrodos impressos para determinações in situ em análises em fluxo com transmissão de dados em tempo real
(Universidade Federal de São Carlos, 2013-07-19)
The main purpose of this work was to develop a potentiostat/galvanostat (PG004) to perform the electroactive metallic ions determination in water samples automatically. A dry thermostated electrochemical cell and a flow ...
Reações de transferência de elétrons fotoinduzidas em complexos binucleares : em direção a fotossíntese artificial
(Universidade Federal de São Carlos, 2013-02-01)
In order to simulate the photoinduced electron-transfer steps in the photosystem II (PSII), the mononuclear complexes fac-[Mn(CO)3(phen)(L)]+, L= imidazole and substituted imidazoles were synthesized to mimic the photochemical ...
Estudo do desempenho de eletrodos de dióxido de chumbo depositados sobre diferentes substratos para o tratamento eletroquímico de soluções contendo corantes têxteis
(Universidade Federal de São Carlos, 2013-04-19)
PbO2 films were grown galvanostatically on different substrates (titanium Ti, platinized titanium Ti- Pt and carbon fiber CF) and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and linear ...
Quantificação de carbamazepina, fluoxetina e seus metabólitos principais em leite materno por injeção direta de amostra utilizando cromatografia líquida acoplada à espectrometria de massa
(Universidade Federal de São Carlos, 2013-04-05)
This work reports the application of bioanalitycal methods by direct injection sample for the quantification of drugs in breast milk. Columns with stationary phase type RAM-BSA, in conventional scale and microbore, were ...
Síntese e aplicação de organocatalisadores em reações de epoxidação assimétricas visando a síntese de compostos bioativos
(Universidade Federal de São Carlos, 2013-06-22)
Given the importance and growth of organocatalysis as an important tool in organic synthesis, in this work a new class of organocatalysts derived from proline was synthesized and applied in epoxidation reactions of electron ...
Estudo fitoquímico de Annona sylvatica (Annonaceae). Avaliação das atividades inseticida e fungicida frente às formigas cortadeiras e seu fungo simbionte e ao gorgulho do milho
(Universidade Federal de São Carlos, 2013-03-27)
The leaf-cutting ants are social species, living in permanent colonies. The genera of the greater importance, Atta (saúvas) and Acromyrmex (quenquéns), are the major plagues of Brazilian agriculture, to cause serious damages ...
Determinação in situ de analitos de interesse alimentício empregando tratamento de imagens digitais de spot tests
(Universidade Federal de São Carlos, 2013-07-12)
In this work a simple, fast and inexpensive analytical method was developed to carry out in situ determinations of ethanol and sulfite ions in food samples. The method was based on digital images captured by cameras and / ...