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Itens para a visualização no momento 51-60 of 1968
Aplicação de 5-bromo-1,1,1-trifluor-4-metoxipent-3-en-2-ona na síntese de pirróis, pirazóis, pirimidinas e 1,2,3-triazóis
(Universidade Federal de Santa Maria, 2015-10-30)
This thesis reports the synthesis of various series of trifluoromethyl substituted nitrogenated heterocycles, such as pyrroles, pyrazoles, pyrimidines and 1,2,3-triazoles, exploiting the synthetic versatility of ...
Síntese e bioatividade de sistemas pirazolil-piridínicos poli-heterocíclicos trialometil substituídos
(Universidade Federal de Santa Maria, 2015-03-02)
This thesis describes the studies carried out using the reagent 6-
hydrazinonicotinic hydrazide for the synthesis of new trihalomethylated pyrazolylpyridine
systems using the 4-alkoxy-4-alkyl(aryl/heteroaryl-1,1,1-trihal ...
Síntese de heterociclos: 2-alquil/arilcalcogeno-n-(4-aril-1,3-tiazol-2-il)acetamidas e (s)-n-(1-(3-aril-1,2,4-oxadiazol-5-il)alquil)-2-(calcogenofenil) acetamidas derivados de organocalcogênios
(Universidade Federal de Santa Maria, 2015-03-27)
In the present work, a series of 2-alkyl/arylchalcogenide-N-(4-aryl-1,3-thiazol-2-yl)acetamide was prepared via addition of aryl or alkyl chalcogenides. This methodology allowed the preparation of new derivatives of ...
Compostos de coordenação derivados do disseleneto e disselenoéteres de bis(2-piridina) síntese, caracterização e aplicações
(Universidade Federal de Santa Maria, 2015-03-06)
This work describes the synthesis and characterization of nineteen compounds derivative of diselenide and diselenoethers of bis(2-pyridyl) with metals of different degree of hardness. Among the nineteen obtained complex, ...
Síntese de novos isoxazóis e pirazóis a partir de derivados 1,3-diíno indólicos
(Universidade Federal de Santa Maria, 2015-04-06)
In this work it describe the synthesis and characterization of new 1,3-diynes indole derivatives, the 1,6-bis(1H-indol-1-yl)hexa-2,4-diynes (6 examples) and unsymmetrical 1-(5-arylpenta-2,4-diynyl)-1H-indoles (6 examples), ...
Avaliação da calibração em LA-ICP-MS usando papel filtro para análise de plantas
(Universidade Federal de Santa Maria, 2015-01-13)
In this work, a new calibration strategy was investigated for the determination of As, Ba, Cd,
Ce, Co, Cr, Cu, La, Mn, Ni, Pb, Se, Sr, Tl, V and Zn in medicinal plants by laser ablation and
inductively coupled plasma mass ...
Síntese e caracterização de novos compostos envolvendo Índio e Calcogênios
(Universidade Federal de Santa Maria, 2015-07-15)
This work is composed of two parts. The first one describes the synthesis of organometallic compounds derived from Br2InCH2Br and dichalcogenoether ligands, RE(CH2)nER (E = Se, Te; n = 1, 3; R = Ph, p-C6H4NMe2), compounds ...
Desenvolvimento de dispositivo para extração e coleta de fumos de asfalto e aplicação na determinação de hidrocarbonetos policíclicos aromáticos
(Universidade Federal de Santa Maria, 2015-03-16)
The given work presents the development and usage of a device (DEC Device for Extraction and Collection) capable of generate and collect fumes produced by the heating of asphalt cement samples. The DEC was elaborated ...
Produção de carne ovina em diferentes sistemas de alimentação
(Universidade Federal de Santa Maria, 2015-02-24)
The objective was to assess the technical feasibility of finishing lambs fed exclusively concentrate in feedlot or on pasture and the effect of these diets on carcass characteristics, meat quality and implications in terms ...
O processo de internacionalização de instituições de ensino superior: um estudo de caso na Universidade Federal de Santa Maria
(Universidade Federal de Santa Maria, 2015-03-28)
It is possible watch the international evolutionary process of education policies
that has manifested in different levels and intensities according to the countries and
regions (Akkari, 2011). Such educational changes have ...