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Determinação de resíduos de agrotóxicos em água empregando microextração líquido-líquido dispersiva (DLLME) e cromatografia líquida de alta eficiência com detecção por arranjo de diodos (HPLC-DAD)
(Universidade Federal de Santa Maria, 2017-07-10)
Water is a natural resource of extreme importance, humans, animals and plants depends directly on it to survive. The state of RS stands out in national scenario as a big producer of many crops, which demand huge amounts ...
Estudo da qualidade do leite in natura recebido pela Usina Escola de Laticínios da UFSM
(Universidade Federal de Santa Maria, 2013-02-21)
Milk is one of the most important foods for human society. Its main components are water, lactose, fat, protein and minerals. It is a delicate and highly perishable product, with its physical, chemical and biological easily ...
Novos polímeros de coordenação e complexos moleculares envolvendo seleninatos e selenonatos
(Universidade Federal de Santa Maria, 2012-07-03)
In this work thirteen new compounds were synthesized and characterized using the
two acids, phenylseleninic (1) and 4-bromophenylseleninic (2) as ligands precursors.
Reactions were carried out using ammonium salts of ...
Prospecção fitoquímica e atividade biológica de plantas medicinais da família asteraceae do bioma pampa
(Universidade Federal de Santa Maria, 2012-04-09)
The species selected for this study were: Pluchea sagittalis, Baccharis
pentodonta and Baccharidastrum triplinervium, all belonging to the Asteraceae
family. The extracts and fractions from leaves and roots of three species ...
Estudo do efeito matriz na determinação de agrotóxicos em diferentes tipos de arroz pelo método QuEChERS modificado e LC-MS/MS
(Universidade Federal de Santa Maria, 2012-03-30)
Rice is socially and economically important because it is the main component of the diet of more than half of the world s population. Brazil is one of the main rice producers in the world and Rio Grande do Sul state yields ...
Metodologia analítica para o estudo da interação de cádmio e chumbo com alguns aminoácidos presentes em soluções de nutrição parenteral
(Universidade Federal de Santa Maria, 2005-12-14)
The patients' health under treatment by Parenteral Nutrition (PN) is directly associated to the quality of the solutions used during the procedures and thus, a rigorous quality control is necessary. Among possible contaminants, ...
Conversão térmica de casca de arroz à baixa temperatura: produção de bioóleo e resíduo sílico-carbonoso adsorvente
(Universidade Federal de Santa Maria, 2005-07-29)
The exploitation of rice husks through thermal conversion at low temperature, adding economical value through its pyrolysis products, may represent a solution to the current environmental problem of discharging this ...
Βeta-bloqueadores em efluente hospitalar: ocorrência, degradação por processos avançados de oxidação e identificação de subprodutos
(Universidade Federal de Santa Maria, 2011-12-15)
β-Blockers are an important group of prescription drugs; as a consequence of the large and continuous use, they are commonly found in the environment.
This study assessed, preliminary, the inherent risk of the β-blockers ...
Síntese e estrutura de compostos poliaza heterocíclicos
(Universidade Federal de Santa Maria, 2012-07-27)
This work describes the synthesis of a number of polyaza heterocycles and
the mechanistic study to obtain these products. Furthermore, the characterization
was performed by spectroscopic method and the structural study by ...
Síntese de 3-acil-4-aril-2-(trifluormetil)-2-hidróxi-3,4,7,8-tetraidro-2h-cromen-5(6h)-onas via reações multicomponentes e derivatizações
(Universidade Federal de Santa Maria, 2012-08-20)
This work describes firstly the synthesis of a new series of 3-acyl-4-aryl-2-(trifluoromethyl)-2-hydroxy-3,4,7,8-tetrahydro-2H-chromen-5(6H)-ones (4) (thirty-four examples) through the methodology of multicomponent reactions ...