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Validação de método multirresídual e monitoramento de resíduos de agrotóxicos por GC-μECD em méis do estado do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2019-03-12)
Due to the complexity of matrices such as honey and the low concentrations of pesticides,
there is a great need for the development of efficient and reliable analytical methods for the
identification and quantification ...
Detecção de DDoS através da análise da quantificação da recorrência baseada na extração de características dinâmicas e clusterização adaptativa
(Universidade Federal de Santa Maria, 2017-03-03)
The high number of Distributed Denial of Service (DDoS) attacks has demanded innovative
solutions to guarantee the reliability and availability of Internet services. In this sense,
different methods have been used to ...
Detecção de ataques de negação de serviço em redes de computadores através da transformada wavelet 2D
(Universidade Federal de Santa Maria, 2012-03-08)
The analysis of network traffic is a key area for the management of fault-tolerant systems,
since anomalies in network traffic can affect the availability and quality of service (QoS). Intrusion
detection systems in ...
Síntese sequencial linear de 6-((1,2,3-triazol-4-il)metil)-4,5- dimetil-2,6-di-hidro-1h-pirrolo[3,4-d]piridazinonas via reações de N-alquilação, CuAAC e ciclocondensação
(Universidade Federal de Santa Maria, 2017-09-21)
This dissertation presents a synthetic route for obtaining a series of eight 6-((1H-1,2,3-
triazol-4-yl)methyl)-1H-pyrrolo[3,4-d]pyridazin-1-ones with yields of 40-70%. The synthetic
route comprises three distinct steps: ...
Síntese, análise cristalográfica e atividade biológica de complexos com ligantes triazenidos com fragmentos orto-halofenila e para-sulfonamidafenila
(Universidade Federal de Santa Maria, 2013-03-08)
This study shows the triazenes ligands and complexes Pd(II), K+ and Au(I) obtained from reactions of the ligands with fragments para-sulfonamidephenyl, comprising triazene ligand 1,3-bis (4 - sulfonamidephenyl) (1) and the ...
Ciclização cascata de o-diinil benzyl calcogenetos promovida por dicalcogenetos de diorganoíla e FeCl3
(Universidade Federal de Santa Maria, 2019-02-21)
The treatment of ortho-diynyl benzyl chalcogenides with a mixture of iron(III) chloride and diorganyl diselenides led to functionalized chalcogen isochromene-fused chalcogenophene derivatives. The reaction parameters were ...
Determinação de resíduos de avermectinas em soja, feijão e milho empregando método QuEChERS modificado e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2019-02-26)
Soybeans and beans are considered oleaginous plants of great economic importance in Brasil. Maize is a cereal that also generates profitability for the economy, but its use, to a large extent, is as animal feed. In the ...
Determinação simultânea multiclasse de fármacos em água de consumo humano empregando extração em fase sólida e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2019-02-26)
Pharmaceuticals are used in both human and veterinary medicine for the prevention and treatment of various diseases. The lack of adequate treatment for urban and industrial effluents associated with the incorrect disposal ...
Estudo computacional da viscosidade da água confinada em nanotubos de carbono
(Universidade Federal de Santa Maria, 2015-02-27)
When confined in nanometer scale, water presents great variation in their dynamic
properties. Here, we carried out molecular dynamics simulations to determine
the ratio of the diffusion coefficient and viscosity variation ...
Sistema de recomendação para triagem de desordens dos sons da fala infantil baseado em um modelo de consciência de situação
(Universidade Federal de Santa Maria, 2018-07-10)
Situation Awareness (SA) involves the correct interpretation of situations, allowing systems
to respond to the observed environment and providing support for decision making in many
systems domains. Speech therapy is an ...