Scientific Commons: P. Carvalho

Raman spectroscopy has been used as a local probe to characterize the structural evolution of magnetron-sputtered decorative zirconium oxynitride ZrOxNy films which result from an increase of...

Impact of different confinement regimes on the two dimensional structure of edge turbulence (2006)

Alonso, J.A., Zweben, S.J., Carvalho, P., De Pablos, J. L., Hidalgo, C., ...

Impact of different confinement regimes on the two-dimensional structure of edge turbulence. Invited paper (2006)

Alonso, J.A., Zweben, S.J., Carvalho, P., De Pablos, J.L., Hidalgo, C., ...

Tribocorrosion behaviour of zrNxOy thin films for decorative applications (2005)

Ferreira, S. C., Ariza, E., Rocha, L. A., Vaz, F., Cunha, L., Carvalho, P., ...

The main aim of this work is the investigation of the tribocorrosion behaviour of single layered zirconium oxynitride, ZrNxOy, thin films in alternative linear regime of sliding and immersed in an...

Patterns of the aquatic macrophyte cover in Cachoeira Dourada Reservoir (GO-MG) (2005)

Bini,L. M, Oliveira,L. G, Souza,D. C, Carvalho,P., Pinto,M. P.

The relationship between the aquatic macrophyte cover in upper segments of tributaries and this cover in these tributaries but near the reservoir's main body was tested. Sixteen taxa belonging to 12...

Effects of temperature on decomposition of a potential nuisance species: the submerged aquatic macrophyte Egeria najas planchom (Hydrocharitaceae) (2005)

Carvalho,P, Thomaz,S. M., Bini,L. M.

Decomposition of aquatic plants is influenced by several biotic and abiotic factors. Among them, temperature plays an important role. Despite the increasing number of studies describing the effects...

Exorista larvarum (Linnaeus, 1758) (Diptera - Tachinidae), parasitoide de Pseudaletia unipuncta (Haworth) (Lepidoptera - Noctuidae) (2005)

Avila Simoes, Ana María, Carvalho, P.

Foram estudados pela primeira vez aspectos da biologia e do comportamento do polífago e gregário endoparasitóide larvar Exorista larvarum (Linnaeus, 1758) (Diptera - Tachinidae) no hospedeiro...

Corrosion behaviour of single layered ZrNxOy thin films in artificial sweat solutions (2004)

Ariza, E., Rocha, L. A., Ferreira, S. C., Vaz, F., Cunha, L., Carvalho, P., ...

Applications of coloured thin films can be found on the production of high-quality consumer products, such as eyeglass frames, wristwatch casings and wristbands. These components should possess...

Geodesic Paths on Triangular Meshes (2004)

D. Martínez, L. Velho, P. Carvalho

Motion Reconstruction Using Moments Analysis (2004)

L. Rocha, L. Velho, P. Carvalho

Data-Based Motion Simulation through a Green?s Function Approach (2004)

P. Ferreira, J. Torreão, P. Carvalho

Space Carving with a Hand-held Camera (2004)

A. Montenegro, P. Carvalho, L. Velho, M. Gattass

Corrosion resistance of ZrNxOy thin films obtained by rf reactive magnetron sputtering (2004)

Ariza, E., Rocha, L. A., Vaz, F., Cunha, L., Ferreira, S. C., Carvalho, P., ...

The main aim of this work is the investigation of the corrosion resistance of single layered zirconium oxynitride, ZrNxOy, thin films in artificial sweat solution at ambient emperature. The films...

b, s)-BCSL : Structured Light Color Boundary Coding (2003)

Asla M. Sa, Paulo Cezar, P. Carvalho, Luiz Velho

In this paper we present (b, s)-BCSL, a new coded structured light method for 3D photography. It employs a sequence of complementary color stripe patterns to define correspondences within a camera...

Image Moments-Based Structuring and Tracking of Objects (2002)

Lourena Rocha, Luiz Velho, Paulo Cezar, P. Carvalho, Matematica Pura Aplicada, Estrada Dona Castorina

This paper presents a new method for structuring and tracking of objects in video sequences. Our approach is based on image moments and the bsp-tree data structure. We use invariant properties of...

Identification of planar defects in D019 phases using high-resolution transmission electron microscopy (2001)

Carvalho, P., Kooi, B.J.

An analysis based on crystal symmetry and high-resolution transmission electron microscopy (HRTEM) is presented as a general methodology to identify planar defects on the basal planes of D019...

The role of the Australian Coastcare program in community-based coastal management: a case study from South Australia (2001)

Harvey, Nicholas, Clarke, B. D., Carvalho, P.

The role of the Australian Coastcare program in community-based coastal management: a case study from South Australia (2001)

Harvey, Nicholas, Clarke, B. D., Carvalho, P.

Prognostic value of the bone marrow in severe sepsis/septic shock (2000)

Milheiro, R, Lafuente, E, Bártolo, A, Sousa, A, Gonçalves, C, Fernandes, J, ...

No abstract available.

Lime Ball Quality Inspection Using A Neural Network And Geometrical-Based Decision Criteria (1999)

P. Carvalho, N. Costa, B. Ribeiro, A. Dourado

In this paper a new method for irregular elliptical shapes localization in multi-connected regions is described. This method ...rst computes a set of elementary arc segments which are then aggregated...

Image Processing In Parallel Virtual Machines Some Experiments And Conclusions (1999)

C. Vaz, J. Lopes, F. Duarte, P. Carvalho

: It is well known that some of the most commonly used algorithms can become of extreme painful execution because of their computational costs. This makes virtually impossible to use them in...

Industrial Visual Inspection Of Lime Granules By Neural Networks (1999)

P. Carvalho, N. Costa, B. Ribeiro, A. Dourado

Lime granule quality inspection is an important task in the pulp and paper industry. In this paper a new method, build-up on a neural network and a path search method, is introduced for lime granule...

On The Use Of Neural Networks And Geometrical Criteria For Localisation Of Highly Irregular Elliptical Shapes (1999)

P. Carvalho, N. Costa, B. Ribeiro, A. Dourado

: Detection of elliptical shapes is of extreme importance in several computer vision applications. In this paper a new method for irregular elliptical shapes localization in multiconnected regions is...

An Automatic Optical Sensor For Vessels And Fibbers Quality Inspection In Pulp Production (1999)

P. Carvalho, H. Arajo, A. Dourado

: Wood quality assessment is an important issue in the pulp and paper industry. In this paper an automatic visual inspection system for wood structural quality measurement is described. To improve...

Highly Irregular Elliptical Object Localisation In Multi-Connected Regions Using Neural Networks (1999)

P. Carvalho, N. Costa, B. Ribeiro, A. Dourado

Detection of elliptical shapes is of extreme importance in several computer applications. In this paper we describe a new method for highly irregular elliptical object localisation based on neural...

Improving coastal vulnerability assessment methodologies for integrated coastal zone management: an approach from South Australia (1999)

Harvey, Nicholas, Clouston, B., Carvalho, P.

Improving coastal vulnerability assessment methodologies for integrated coastal zone management: an approach from South Australia (1999)

Harvey, Nicholas, Clouston, B., Carvalho, P.

Ecological Sustainability of the South Australian Coastal Aquaculture Management Policies (1998)

Carvalho, P., Clarke, B.

Ecological Sustainability of the South Australian Coastal Aquaculture Management Policies (1998)

Carvalho, P., Clarke, B.

Coastal Vulnerability Assessment (1997)

Harvey, Nicholas, Carvalho, P., Clouston, B.

Coastal Vulnerability Assessment (1997)

Harvey, Nicholas, Carvalho, P., Clouston, B.