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Itens para a visualização no momento 1321-1330 of 1406
Bloqueios atmosféricos e sistemas frontais sobre a América do Sul em cenários de clima futuro
(Universidade Federal de Santa Maria, 2014-02-20)
The meteorological systems modulate the behavior of rainfall and temperature on
large regions and must be correctly simulated by the climate models. The representation of
these events should be good for the reliability ...
Determinação de halogênios por cromatografia de íons e ICP-MS em sulfato de bário após decomposição por piroidrólise
(Universidade Federal de Santa Maria, 2013-02-28)
In this work pyrohydrolysis is proposed as pretreatment of barium sulfate and subsequent determination of F, Cl, Br and I by ion chromatography (IC) and inductively coupled plasma mass spectrometry (ICP-MS). After the ...
Modelos de redes de mapas acoplados para interações herbívoro-predador
(Universidade Federal de Santa Maria, 2013-04-12)
In this work we propose a discrete predator-prey model with the purpose of analyzing the
spatio-temporal dynamics of herbivorous and their predators. For that, we explicitly consider
the dispersion of both species through ...
Síntese de 4-trifluormetil-5-(propan-1-ol-3-il)-1H-piridin-2-iminas N-substituídas
(Universidade Federal de Santa Maria, 2013-03-08)
This work presents a simple and accessible synthetic route for the
preparation of a series, of nineteen new N-substituted 4-trifluormethyl-5-
(propan-1-ol-3-yl)-pyridin-2-(1H)-imines, obtained from the reaction between ...
Mudanças de uso e cobertura da terra na microbacia hidrográfica do Arroio Grande, Santa Maria-RS
(Universidade Federal de Santa Maria, 2011-12-22)
The issues of land use changes and land covering have attracted interests,
both inside and outside the scientific community, due to the accelerated process and
potential environmental and socioeconomic impacts of these ...
Análise estrutural de quatro polímeros de coordenação de difenilfosfinatos de metais alcalinos e alcalinos terrosos
(Universidade Federal de Santa Maria, 2005-03-04)
Não foi possível inserir o abstract.
Estudo de primeiros princípios de Perovsquitas RNiO3 (R = Pr, Nd)
(Universidade Federal de Santa Maria, 2004-03-26)
Não foi possível inserir o abstract.
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 ...
Mapeamento de áreas úmidas e banhados na microbacia do Rio Amandaú, região noroeste do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2011-04-19)
The wetlands are one of the world s most productive places, with high rates of
biological diversity and also highly impacted. In this context, this project was aimed at
mapping the Wetlands Ecosystems present in the soil ...