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Now showing items 31-40 of 72
Desenvolvimento de modelos de calibração multivariada em espectroscopia de infravermelho próximo para ácidos graxos em amostras de carne bovina
(Universidade Federal de São Carlos, 2016-03-21)
The Brazilian cattle have shown promise prominence in the international market
compared to other commodities. It already knows the important role of fatty acids in the complimentarily of human nutrition. On the other hand, ...
Determinação de As, Sb e Se em material agronômico por espectrometria de emissão óptica acoplada a plasma induzido com geração de hidretos (HG-ICP-OES).
(Universidade Federal de São Carlos, 2005-04-07)
With the objective to attain maximum productivity with small costs, organic and inorganic chemical parameters are used to evaluate and monitoring crops and animals development. Inorganic amounts in agronomic
samples have ...
Desenvolvimento de procedimentos de digestão para óleos lubrificantes.
(Universidade Federal de São Carlos, 2005-04-29)
In this work it was developed a digestion procedure for lubricant oil based on gradual addition of sample aliquots on hot and concentrated oxidant acids. The element concentrations in the diluted digestates were determined ...
Determinação de polifenóis totais utilizando sistemas de análise por injeção em fluxo.
(Universidade Federal de São Carlos, 2004-02-17)
In this dissertation, three flow injection analysis methods for total polyphenol
determination in tea and acacia s tannins commercial extracts were developed. The first method is based on the reaction between the polyphenol ...
Desenvolvimento de minissensores de filme de bismuto para a determinação voltamétrica in loco de atrazina, diquat e paraquat em águas naturais
(Universidade Federal de São Carlos, 2011-02-25)
The development of bismuth film electrodes (BiFE) and minissensors/BiFE for application to the development of electroanalytical procedures for determination of atrazine, Diquat and Paraquat using voltammetric techniques ...
Desenvolvimento de um compósito inseticida-fertilizante microencapsulado para promover o aumento de produtividade agrícola
(Universidade Federal de São Carlos, 2017-09-29)
The main objective of this work was to develop a bioinsecticide-fertilizer model for pest insect control, formulated with extract of Azadirachta indica A. Juss. and humic acids as polymer matrix and fertilizer agent. ...
Calibração multivias em Laser-Induced Breakdown Spectroscopy (LIBS) para determinação de Ca, K e Mg em amostras de suplemento mineral para humanos
(Universidade Federal de São Carlos, 2021-03-25)
This work intends to present a new approach for modeling LIBS data resolved in time using multiway algorithms, aiming to achieve the advantage of second order. The algorithms evaluated in this study were: Multivariate Curve ...
Eletrodo de pasta de carbono modificado com solvente eutético profundo hidrofóbico e sua aplicação voltamétrica
(Universidade Federal de São Carlos, 2021-03-01)
In this work, the use of hydrophobic deep eutectic solvent was proposed for the modification of carbon paste electrodes. Different HDES were prepared using fatty acids: octanoic, decanoic, and dodecanoic acids, and ...
Biorrefinaria aplicada à cadeia de soja: um estudo de caso de extração verde e sustentável de isoflavonas
(Universidade Federal de São Carlos, 2021-04-29)
SOY BIOREFINERY: GREEN AND SUSTAINABLE EXTRACTION OF ISOFLAVONES. Brazil has the potential to be the world's largest producer of soybeans (Glycine max), being, in 2020, responsible for the production of 124 Mt of oilseeds. ...
Quantificação e caracterização de microplásticos na atmosfera de São Carlos – SP
(Universidade Federal de São Carlos, 2022-11-25)
With the rampant use of plastics, combined with the annual increase in its production, a large generation of waste is often incorrectly disposed of, resulting in plastic pollution in the environment, including macro, micro, ...