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Itens para a visualização no momento 141-150 of 157
Síntese de Pirimidinas derivadas de 7,7,7-trialo-4-metoxi-6-oxo-4- heptenoatos de metila e bi-heterociclos trifluormetilados
(Universidade Federal de Santa Maria, 2012-02-27)
An efficient method to obtain pyrimidinones and pyrimidines trialomethylated from the cyclocondensation reaction of compounds of methyl 7,7,7-trihalo-4-methoxy-6-oxoheptenoate
with urea and differents amidines providing ...
Síntese de 3-alcoxiacrilamidas a partir de tricloroacetil enol éteres
(Universidade Federal de Santa Maria, 2012-02-24)
This work reports a effective method for the preparation of a series of the new
3-alkoxy acrylamides of general formula R3HNC(O)CR1=CR2(OR), where R/ R1/ R2 =
Et/H/H, Me/H/Me, -(CH2)2-/H, -(CH2)3-/H; R3 = Allyl, n-Pr, ...
Síntese de 1,2,4-oxadiazóis derivados de 4-tiazolidinonas e arilamidoximas
(Universidade Federal de Santa Maria, 2012-07-20)
The current work reports the incorporation of 4-thiazolidinones to oxadiazolic
ring by a simple and effective methodology.
Five species of thiazolidinones were synthesized by three component
condensation reaction of ...
Aplicando a transformada wavelet bidimensional na detecção de ataques web
(Universidade Federal de Santa Maria, 2012-02-27)
With the increase web traffic of comes various threats to the security of web applications.
The threats arise inherent vulnerabilities of web systems, where malicious code or content injection
are the most exploited ...
Classificação de fases em imagens hiperespectrais de raios X característicos pelo método de agrupamento por deslocamento para a média
(Universidade Federal de Santa Maria, 2012-01-23)
In the present work we introduce the Mean Shift Clustering (MSC) algorithm as a
valuable alternative to perform materials phase classification from hyperspectral images.
As opposed to other multivariate statistical ...
Affective-recommender: um sistema de recomendação sensível ao estado afetivo do usuário
(Universidade Federal de Santa Maria, 2012-12-21)
Pervasive computing systems aim to improve human-computer interaction, using users
situation variables that define context. The boom of Internet makes growing availables items to
choose, giving cost in made decision ...
Estudo multibanda do conteúdo estelar de regiões HII do Hemisfério Sul
(Universidade Federal de Santa Maria, 2012-10-29)
We present a multi-wavelength study of the stellar content of 11 optical/infrared Southern
Galactic Hii regions with 10 h < α(J2000) < −17 h and −65° < δ(J2000) < −35°.
Nine optical objects with no published or uncertain ...
Validação e adaptação do sistema CR campeiro visando implementacão de projetos de agricultura de precisão no Paraguai
(Universidade Federal de Santa Maria, 2012-07-26)
The development and economic growth in Paraguay are highly dependent on
agriculture, which in recent years has undergone an expansion. The
computerization of operations for managing the crops and the search for
improvements ...
Segregação residencial por índices de dissimilaridade, isolamento e exposição, com indicador renda, no espaço urbano de Santa Maria - RS, por geotecnologias
(Universidade Federal de Santa Maria, 2012-12-14)
The socioeconomic transformations that occurred in the 90s in Brazil resulted in the redefinition of a new spatial pattern in Brazilian cities. This new standard fragmented approaches physically different social groups, ...
A modelagem tridimensional no tratamento do problema direto da geodésia
(Universidade Federal de Santa Maria, 2012-03-29)
For the transformation of the local coordinates in the global coordinates, and
contrariwise, it can be employed the traditional method of Puissant or the 3D
modelling. In this paper, both approaches were applied in the ...