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Now showing items 31-40 of 182
Avaliação de procedimentos para preparo de amostras agronômicas visando determinação multielementar por espectrometria de emissão ótica com plasma induzido.
(Universidade Federal de São Carlos, 2004-05-21)
Sample preparation was always considered a limiting factor for sample
throughput in the analytical sequence due to its high time consumption and great
probability for error insertion in the results. Therefore, purposes to ...
Estudo fitoquímico de Helietta puberula (Rutaceae), Simarouba versicolor (Simaroubaceae) e busca de um processo de microencapsulação de compostos ativos visando o controle de formigas cortadeiras.
(Universidade Federal de São Carlos, 2006-06-02)
This work involved the
bioassay-guided study of Helietta puberula (Rutaceae) e Simarouba versicolor
(Simaroubaceae). The biossays were carried out with leaf-cutting ants Atta
sexdens rubropilosa, antifungal activity against ...
Desenvolvimento de procedimentos de análise por injeção em fluxo para a determinação de furosemida, paracetamol e acetilcisteína em formulações farmacêuticas.
(Universidade Federal de São Carlos, 2006-08-25)
In this thesis are presented the development of
flow injection analysis procedures with spectrophotometric detection for determination of
furosemide, paracetamol and acetylcysteine in samples of pharmaceutical formulations.
A ...
Avaliação de potencialidades e aplicações de espectrômetros com plasma acoplado indutivamente em análises químicas.
(Universidade Federal de São Carlos, 2007-02-22)
This work is divided in two main parts. In the first one, the operating
conditions of a radially inductively coupled plasma optical emission spectrometry (ICP
OES) was evaluated in soil and vegetable materials analysis. A ...
Aplicação das técnicas espectroscópicas de RMN e IV e de métodos quimiométricos na quimiotaxonomia de liquens.
(Universidade Federal de São Carlos, 2007-02-02)
This present work
describes the chemotaxonomic analysis of lichens through the utilization of NMR
spectroscopic techniques, HR-MAS and NMR in solution, and IR allied with
chemometrics methods. This analysis were carried ...
Estudos de ionização de moléculas poliatômicas de interesse tecnológico.
(Universidade Federal de São Carlos, 2004-03-26)
Complex polyatomic compounds are increasingly being used for modern technological applications, e.g., those related to the semiconductor
industry, generation of new materials etc. However, there is a big lack of knowledge ...
Desenvolvimento de procedimentos em fluxo envolvendo espectrofotometria convencional e com longo caminho óptico para determinação de ânions em águas
(Universidade Federal de São Carlos, 2008-02-22)
In this work, five procedures were developed for determination of anions (chloride, sulphate, phosphate and fluoride), with spectrophotometric detection, being four employing a 100-cm optical length flow-cell and one of ...
Aplicação de técnicas espectrométricas, cromatográficas e quimiométricas na avaliação da autenticidade de plantas utilizadas como fitoterápicos.
(Universidade Federal de São Carlos, 2006-08-01)
The use of herbal medicines in the Brazilian market has increased in the last
few decades. Therefore, the quality control for herbal products, as well as traditional
medicines, is extremely important and for both: the ...
Síntese e caracterização de nanoilhas de PZT e BaTiO3
(Universidade Federal de São Carlos, 2007-09-27)
This work presents a systematic study of synthesis and characterization of ferroelectric nanoislands. Generally three methods were had been studied: polymerized complex method (MPC), hydrothermal synthesis and nonaqueous ...
Desenvolvimento de um fotômetro portátil usando LED como fotodetector e de procedimentos analíticos automáticos empregando multicomutação em fluxo
(Universidade Federal de São Carlos, 2008-07-16)
This work involves the development of portable photometer using a LED (Light Emitting Diode) as source of electromagnetic radiation and another one LED as photodetector. The viability of this proposal was demonstrated in ...