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Economia de combustível de tratores agrícolas utilizando diferentes transmissões e estratégia de condução
(Universidade Federal de Santa Maria, 2016-08-19)
Due to Diesel oil s mineral origin and marketing price, the consumption of this fuel by a tractor becomes one of the most important aspects at the time of its acquisition and use. Knowledge of the appropriate strategies ...
Estimativa de vazão com dados escassos: novas hipóteses para o método silveira
(Universidade Federal de Santa Maria, 2016-03-18)
The estimates of low flow in ungauged basins with data lacking represent in Brazil an urgent technical demand as a result of the environmental licensing and water rights. These processes are requirements of our legislation ...
Proposta de uma nova função de autocorrelação para o estudo do meandro do vento horizontal
(Universidade Federal de Santa Maria, 2016-06-07)
In this study is propose a new mathematical expression to describe the observed meandering
autocorrelation functions in low-wind speed. The analysis utilizes a large
number of the data to show that the new proposed theoretical ...
Duas professoras de espanhol língua estrangeira (ele) e suas (des)crenças sobre o livro didático
(Universidade Federal de Santa Maria, 2016-02-26)
When the foreign language teacher is planning classes and creating didactic material, he/she must bear in mind certain factors, such as an analysis of students` needs, their interaction, the use of authentic materials, ...
Síntese de copolímeros em bloco por reações one-pot com processos RAFT e ROP simultâneos
(Universidade Federal de Santa Maria, 2016-02-04)
The present work describes a methodology of controlled synthesis of block copolymers by one-pot reactions involving simultaneous RAFT and ROP processes mediated by a bifunctional compound which acts as a chain transfer ...
HPAs em águas superficiais e efluente hospitalar: degradação por PAOs e desenvolvimento de métodos para determinação e identificação de subprodutos
(Universidade Federal de Santa Maria, 2016-02-26)
In this study, was optimization an analytical method for identification and quantification method of Polycyclic Aromatic Hydrocarbons (PAHs) in surface water and hospital effluent samples. High Performance Liquid Chromatography ...
Determinação de POPs e agrotóxicos em leite materno empregando cromatografia a gás acoplada à espectrometria de massas com ionização química negativa (GC-NCI-MS)
(Universidade Federal de Santa Maria, 2016-03-31)
The Stockholm Convention was the first global attitude trying to preserve human health and the environment of the indiscriminate use of persistent organic pollutants (POPs), especially pesticides, which are characterized ...
Síntese e avaliação da atividade antioxidante de calcogenilazidas e calcogeniltriazóis
(Universidade Federal de Santa Maria, 2016-03-24)
In this work, we developed a synthetic route for obtaining β-aryl-chalcogenoazide and β-aryl-chalcogenotriazole (S, Se and Te) derived from L-amino acids (L-phenylalanine, L-valine and L-leucine). We obtained a compounds ...
Síntese de 4-organocalcogenil-1h-isocromen-1-iminas e 3-(alquil calcogenoil-2-benzofenil[b]selenofeno[2,3-d] calcogenofenos via reações de ciclização mediadas por sais de ferro
(Universidade Federal de Santa Maria, 2016-08-03)
In this work we developed the efficient and selective heterocyclic product synthesis
using as electrophilic agent a ferric chloride combinated with diorganyl
dichalcogenides under mild conditions. In the first part of this ...
Síntese, análise estrutural e avaliação da atividade catalítica mimética da superóxido dismutase e peroxidases de complexos derivados do piridoxal e cobre
(Universidade Federal de Santa Maria, 2016-03-31)
This work presents the synthesis and characterization of copper complexes
that mimic the activity of the superoxide dismutase enzyme, which operates in the
elimination of reactive oxygen species or in the activation of ...