Encontrados 23 documentos, a visualizar página 1 de 3

Ordenado por Data

Synthesis, characterisation and luminescent properties of lanthanide-organic po...

Girginova, Penka I.; Paz, Filipe A. Almeida; Soares-Santos, Paula C. R.; Ferreira, R. A. Sá; Carlos, Luís D.; Amaral, Vítor S.; Klinowski, Jacek

Three new lanthanide(III) complexes (Ln = Sm, Tb and Eu) of picolinic and glutaric acid were prepared and characterised. The crystal structure of the complex [Sm(glu)(pic)- (H2O)2] (where Hpic and H2glu stand for picolinic and glutaric acid, respectively) was determined by single-crystal Xray diffraction. All the Ln complexes were characterised by elemental analysis, infrared spectroscopy, X-ray powder diffract...


Synthesis of 3-indolylazoles and meridianin derivatives from indolyl enaminonit...

Campos, Ana M. F. Oliveira; Salaheldin, Abdellatif M.; Paz, Filipe A. Almeida; Rodrigues, Lígia M.

The reaction of indole derivatives with cyanoacetic acid followed by treatment with DMFDMA gave the intermediate indolyl enaminonitriles (3). Further reaction with aminoguanidine yielded 5´-cyanomeridianin analogues (4). The same intermediate reacted with p-methoxyphenylhydrazine to give the pyrazolyl derivative (8). Treatment of (2E)-3-dimethylamino-2-(1H-indol-3-yl)-propenoate (3a) with hydroxylamine hydrochl...


Developmental and reproductive patterns of Triatoma brasiliensis infected with ...

Oliveira,Tiago G; Carvalho-Costa,Filipe A; Gomes,Taís F; Sarquis,Otília; Sposina,Ricardo; Lima,Marli M

The aim of this work was to study the interaction between Trypanosoma cruzi-1 and Triatoma brasiliensis. A group of 1st instar nymphs was initially fed on T. cruzi-infected mice and a control group was fed on uninfected mice. From the second feeding onwards, both groups were otherwise fed on non-infected mice. The resulting adults were grouped in pairs: infected male/uninfected female, uninfected male/infected ...

Data: 2010   |   Origem: OASIS br

SMS over LTE : interoperability between legacy and next generation networks

Leitão, Filipe A.; Freire, Sérgio S.; Lima, Solange

To increase the trust and acceptance of Next Generation Networks (NGN) by new and existing subscribers, it is necessary to ensure that the most popular services of legacy networks (GSM/GPRS) are still in place. The Short Message Service (SMS) is a widespread data service with high revenue for telecommunication operators, which allows the exchange of short messages between fixed, mobile and, indirectly, Internet...


Habitat continuity and geographic distance predict population genetic different...

Filipe, A.; Raimondi, P. T.; Reed, D. C.; Coelho, N. C.; Raphael, L.; Allison, W.; Serrão, Ester

Isolation by distance (IBD) models are widely used to predict levels of genetic connectivity as a function of Euclidean distance, and although recent studies have used GIS-landscape ecological approaches to improve the predictability of spatial genetic structure, few if any have addressed the effect of habitat continuity on gene flow. Landscape effects on genetic connectivity are even less understood in marine ...


The tadpole of Hypsiboas atlanticus (Anura, Hylidae) from northeastern Brazil

Nascimento,Filipe A. C. do; Lima,Marcelo G. de; Skuk,Gabriel O; Sá,Rafael O. de

The tadpole of Hypsiboas atlanticus (Caramaschi & Velosa, 1996) is described from the municipality of Maceió, State of Alagoas, Brazil. At stage 36 the larvae have an overall elliptical body in lateral and dorsal views, oral disc anteroventral, spiracular tube sinistral, and labial tooth row formula 2(1,2)/3(1). The oral disc is surrounded, almost completely (anterior medial gap present) by a single row of ...

Data: 2009   |   Origem: OASIS br

Swimming against the current: genetic vaccination against Trypanosoma cruzi inf...

Rodrigues,Mauricio M; Alencar,Bruna C de; Claser,Carla; Tzelepis,Fanny; Silveira,Eduardo L; Haolla,Filipe A; Dominguez,Mariana R

Vaccines have had an unquestionable impact on public health during the last century. The most likely reason for the success of vaccines is the robust protective properties of specific antibodies. However, antibodies exert a strong selective pressure and many microorganisms, such as the obligatory intracellular parasite Trypanosoma cruzi, have been selected to survive in their presence. Although the host develop...

Data: 2009   |   Origem: OASIS br

Three-dimensional lanthanide-organic frameworks based on di-, tetra-, and hexam...

Shi, Fa-Nian; Cunha-Silva, Luis; Trindade, Tito; Paz, Filipe A. Almeida; Rocha, Joao

Three-dimensional lanthanide-organic frameworks formulated as (CH3)2NH2[Ln(pydc)2] · 1/2H2O [Ln3+ ) Eu3+ (1a) or Er3+ (1b); pydc2- corresponds to the diprotonated residue of 2,5-pyridinedicarboxylic acid (H2pydc)], [Er4(OH)4(pydc)4(H2O)3] ·H2O (2), and [PrIII 2PrIV 1.25O(OH)3(pydc)3] (3) have been isolated from typical solvothermal (1a and 1b in N,N-dimethylformamide - DMF) and hydrothermal (2 and 3) syntheses....


Thermal and structural analysis of 4,5,6-trimethoxyisatin

Campos, Ana M. F. Oliveira; Rodrigues, Lígia M.; Francisco, Carla Santana; Oliveira, M. J.; Silva, Maria Manuela; Smith, Michael John

4,5,6-Trimethoxyisatin was crystallized from water to give dark red needles that were characterized by NMR and IR spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), single-crystal X-ray diffraction (XRD) and hot-stage microscopy.


Evolução e coexistência do serviço de mensagens SMS em IMS

Leitão, Filipe A.; Freire, Sérgio S.; Lima, Solange

De modo a conquistar a confiança e potenciar a aceitação e adesão dos utilizadores às Redes de Próxima Geração (RPG), é necessário garantir que os serviços mais populares das redes legadas (GSM/GPRS) continuam presentes. O Short Message Service (SMS) é um serviço de “dados”, extremamente rentável para as operadoras de telecomunicações, que permite a troca de mensagens curtas entre utilizadores de redes móveis, ...


23 Resultados

Texto Pesquisado

Refinar resultados

Autor











Data











Tipo de Documento



Recurso








Assunto















    Financiadores do RCAAP

Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência Programa Operacional da Sociedade do Conhecimento União Europeia