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Avaliação nutricional de fiambres

Os produtos derivados de carne são parte integrante dos hábitos alimentares dos portugueses. Entre estes destacam-se os fiambres, cuja oferta tem sido crescente ao longo dos tempos. O fiambre é um produto com grande diversidade de tipos de carne e, consequentemente com valores comerciais muito diferentes. Está geralmente associado a um elevado teor em sal, aditivos, colesterol e em alguns casos gordura, ingredi...

Perfil microbiológico dos pacientes fibrocísticos atendidos no Hospital de Clín...

Calculations of the atomic and the electronic structures of 4d-transition-metal...

A systematic study of the zinc-blende-type 4d-transition-metal nitrides, which still need to be synthesized, is carried out by means of spin-polarized first-principles full-potential-linearized-augmented-plane- wave calculations using the local spin density approximation. In particular, lattice constants, bulk moduli, band structures and density of states are reported, and trends are discussed.

Diluted magnetic Ga1-xMn xN alloys: a first-principles study

The utilization of the quantum properties of the electron spin wave function will allow the development of a new class of devices. The problem is still controversial and unsettled, even qualitatively, especially for concentrated spin systems such as 3d metals and their alloys. The variety of crystal structures of 3d metals makes difficult the direct comparison between the experimental results and the theoretica...

First-principles materials study for spintronics: MnAs and MnN

We report ab-initio all electrons density- functional calculations for the electronic structure of the compounds MnAs and MnN, in the zinc-blende phase. They are potential materials for use in fabrication of new functional semiconductors taking advantage of the spin degree of freedom. The aim is the establishing of the semiconductor spin electronics (spintronics) as a practical technology [H. Ohno, Semiconducto...

Classification of Recorded Classical Music: a Methodology and a Comparative Study

As a result of recent technological innovations, there has been a tremendous growth in the Electronic Music Distribution industry. Consequently, tasks such as automatic music genre classification address new and exciting research challenges. Automatic music genre recognition involves issues like feature extraction and development of classifiers using the obtained features. We use the number of zero crossings, l...

A prototype for classification of classical music using neural networks

As a result of recent technological innovations, there has been a tremendous growth in the Electronic Music Distribution industry. In this way, tasks such us automatic music genre classification address new and exciting research challenges. Automatic music genre recognition involves issues like feature extraction and development of classifiers using the obtained features. As for feature extraction, we use featu...

First-principles calculations of the effective mass parameters of Al xGa1-xN an...

First-principles calculations of electronic band structures of the ordered cubic alloys Al xGa1-xN and Cd xZn1-xTe are carried out. The band structures are used to provide e ective masses and Luttinger parameters which are useful in the parametrization of theories based on e ective hamiltonians.

Geochemical Characterization of Rain Water Particulate Material on a Coastal Su...

Airborne contamination has been of concern for a number of scientist in temperate regions. In the tropics, a very small amount of data is available. In this work, rain water particulate material was monitored in two sites in Rio de Janeiro State (Brazil): the first (Sepetiba), subjected to high inputs of metals from industrial activities and the second (Iguaba), subjected to very mild contamination. Particulate...

Calomys callosus: an alternative model to study fibrosis in Schistosomiasis man...

Twenty Calomys callosus, Rengger, 1830 (Rodentia-Cricetidae) were studied in the early stage of the acute schistosomal mansoni infection (42nd day). The same number of Swiss Webster mice were used as a comparative standard. Liver and intestinal sections, fixed in formalin-Millonig and embedded in paraffin, were stained with hematoxilin and eosin, PAS-Alcian Blue, pH = 1.0 and 2.5, Lennert's Giemsa, Picrosirius ...