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Heterociclização entre 4-alcóxi-1,1,1-triflúor-3-alquen-2-onas e hidrazonas: metodologias seletivas para a obtenção de heterociclos trifluormetilados
(Universidade Federal de Santa Maria, 2009-07-31)
Several methods for the regioselective synthesis of trifluoromethylated heterocycles from 4-alcoxy-1,1,1-trifluoro-3-alken-2-ones and hydrazones are described. In the first part of this work, a series of (E)-2-[N ...
Síntese e caracterização estrutural de novos compostos de índio (II) e índio(III)
(Universidade Federal de Santa Maria, 2008-03-17)
This work presents the synthesis and crystallographical study of indium organometallic compounds series in II and III oxidation states. Br2In(diox)2CH2Br and tetrahedral indium cluster, In4R4 [R = C(SiMe3)3], were adopted ...
Síntese e atividade antimicrobiana de 3-trifluormetil(oxo)-pirimido[1,2-a]benzimidazóis
(Universidade Federal de Santa Maria, 2005-02-15)
This work presents the synthesis of a series of 3-trifluormethyl(oxo)-pyrimido[1,2-a]benzimidazoles from the cyclocondensation reaction between 2-amino-1H-benzimidazol and 4-alcoxy-1,1,1-trihalo-3-alquen-2-ones.
The ...
Espectrometria de absorção atômica com tubo aquecido na chama e amostragem direta de sólidos para determinação de manganês e níquel em coque de petróleo
(Universidade Federal de Santa Maria, 2009-07-28)
A solid sampling flame furnace atomic absorption spectrometry (SS-FF-AAS)
system was developed in this work for Mn and Ni determination in petroleum coke.
The proposed solid sampling system was made in quartz, with two ...
Educação estatística – uma proposta de ensino
(Universidade Federal de Santa Maria, 2007-02-14)
An important question to be analised in the field of Education is how students learn, as well
as the way interdisciplinary approaches can be established in science. Researches in the
field of Education have emphasized ...
Avaliação das perdas de peso de grãos de café após o processo de torrefação
(Universidade Federal de Santa Maria, 2005)
This article presents an evaluation of the weight loss after the process of coffee toasting. In
order to evaluate this process, every fifteen days were analysed the total weight of the coffee bought,
its weight after ...
Análise da taxa de mortalidade infantil no município de Caçapava do Sul – RS
(Universidade Federal de Santa Maria, 2006-07-18)
Infant mortality is an important indicative not only of infant health, it also reflects the health
status and the degree of social economic development of a certain population. The measurement
of the infant deaths, in ...
Estimativa do impacto econômico da UFSM: uma aplicação da amostragem estratificada proporcional
(Universidade Federal de Santa Maria, 2004)
Perfil empresarial da cidade de Augusto Pestana/RS
(Universidade Federal de Santa Maria, 2006)
Aplicação do modelo de regressão de Cox
(Universidade Federal de Santa Maria, 2004-06-04)
The main purpose of this research was study the survival
analyses by statistics techniques to censored data. In this case the
outcome variable is the time until the event occur, called failure time.
In this research we ...