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Comparação de dois tipos de solução no posicionamento com receptores GPS
(Universidade Federal de Santa Maria, 2006-08-25)
The basic principle of GPS use consists in the simultaneous measure of the distances between the receiver antenna and at least four satellites of the constellation. Known the distance from the satellite to the receiver ...
Supercondutividade em um modelo de hubbard d− p, em duas dimensões
(Universidade Federal de Santa Maria, 2006-12-15)
In the present work the Roth s two-pole approximation (Phys. Rev. 184, 451 (1969)) has been used to investigate the role of d− p hybridization in the normal and superconducting states of an extended d− p Hubbard model. ...
Síntese e análise estrutural de novos dihaloorganoteluratos(II) monoaniônicos.
(Universidade Federal de Santa Maria, 2006-02-17)
In this dissertation the synthesis and structural characterization of the new series of monoanionic dihaloorganyltellurates(II) compounds with a general formula (C5H6N)[mesTeX2] is presented. Dimesitylditelluride (mesTe)2 ...
Síntese de 2-amino(alcoxi)-5-trifluoracetil-1,2,3,4-tetraidropiridinas e oxazolo[3,2-a]piridinas
(Universidade Federal de Santa Maria, 2006-07-03)
The present work describes the synthesis of novel 2-alkoxy-5-trifluoroacetyl-1,2,3,4-tetrahydropyridines, 2-amino-5-trifluoroacetyl-1,2,3,4-tetrahydropyridines and oxazolo[3,2-a]pyridines from the cyclocondensation reactions ...
Gradientes de abundâncias químicas em galáxias espirais
(Universidade Federal de Santa Maria, 2006-06-28)
We used photoionization models in order to derive O/H, N/O, and S/O abundance gradients in three isolated barred spiral galaxies (NGC 1365, NGC 925, NGC 1073) and in nine spiral galaxies (NGC 4501, NGC 4571, NGC 4689, NGC ...
Técnicas de geoprocessamento na determinação do índice de perigo de incêndios
(Universidade Federal de Santa Maria, 2006-04-13)
The forest fire is considered an environmental impact, because provokes physic, biotic and anthropic environment characteristics changes or modifications. Brasil
doesn't have an adequate fire politic support. It's necessary ...
Síntese de 2-alquinil telurofenos via reação de sonogashira entre 2-halotelurofeno e 1-alcinos
(Universidade Federal de Santa Maria, 2006-05-29)
We present herein our results of the palladium-catalyzed cross-coupling of 2-halotellurophenes with several terminal alkynes to give acetylenic tellurophene
derivatives in excellent yields. Our initial efforts were devoted ...
Arborização urbana: uma contribuição à qualidade de vida com uso de geotecnologias
(Universidade Federal de Santa Maria, 2006-12-18)
Street arborization can influence directly population s life quality because it can offer some benefits such as: thermal comfort, shade, reduction of pollution and noise. These benefits can contribute to the physical-environmental ...
Proposta de desenvolvimento de um software para o ensino e aprendizagem de geografia nas séries iniciais
(Universidade Federal de Santa Maria, 2006-02-13)
This work presents a virtual instrument development that is going to support the teaching and learning process in Geography, for the 3rd grade of Elementary School at Public Schools of Santa Maria City RS Brazil. In ...
Uso de geotecnologia para o mapeamento do município de São Francisco de Assis - RS
(Universidade Federal de Santa Maria, 2006-11-28)
Considering the diversity of elaborated software for the use of the Geoinformation Technology and the many kinds of cartographic and topographic documents related to Geoprocessing, this study mainly aimed at identifying ...