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Numerical study of contact forces for crack closure analysis
Antunes, F. V.; Chegini, A. G.; Correia, L.; Branco, R.Plasticity induced crack closure (PICC) has been widely studied using numerical models. Different numerical parameters can be considered to quantify the opening level, namely one based on the analysis of contact stresses at minimum load. A modified version of this parameter is proposed here, based on nodal contact forces instead of contact stresses. The predictions were found to be similar to those obtained fro...
Use of high moisture corn silage replacing dry corn on intake, apparent digesti...
Canizares,G.l.L.; Gonçalves,H.C.; Costa,C.; Rodrigues,L.; Menezes,J.J.L.; Gomes,H.F.B.; Marques,R.O.; Branco,R.H.Twenty primiparous and multiparous Alpine breed goats at approximately 80 days of lactation were used in this experiment. The animals were housed individually in metal cages and distributed according to milk production in five 4 × 4 Latin squares. The experimental diets used in the experiment presented concentrate:forage ratio of 65:35. The treatments were characterized by increasing levels of 0, 33, 67 and 100...
Residual feed intake and relationships with performance of Nellore cattle selec...
Lucila Sobrinho,T.; Branco,R.H.; Bonilha,S.F.M.; Castilhos,A.M.; Figueiredo,L.A.; Razook,A.G.; Mercadante,M.E.Z.The objective of this work was to evaluate performance, efficiency parameters and phenotypic correlations among measurements of energy efficiency of Nellore cattle selected for post weaning weight and classified according to residual feed intake, calculated by the difference between observed and predicted intake, based on average metabolic body weight and average daily gain. Thus, animals were classified within...
Experimental Adhesion Prevention Studies: A Comparative Study in a Rabbit Model
Background: Adhesions formation after abdominal surgery is a problem that causes many complications in the patient’s future life. In this study we compare the possible individual effects of Ringer ́s lactate, Adept® and Mesofol® and the combined effects of Adept® and Mesofol® in the prevention of post surgical adhesions formation in a standardised rabbit model.Materials and Methods: 90 rabbits were divided into...
Finite element modelling and analysis of crack shape evolution in mode-I fatigu...
Branco, R.; Antunes, F. V.A numerical procedure was employed to study the shape evolution of fatigue cracks in Middle Cracked Tension specimens. This iterative procedure consists of a 3D finite element analysis to obtain the displacement field in the cracked body, calculation of stress intensity factors along crack front and definition of local crack advances considering the Paris law. Numerical predictions were compared with experiment...
Determination of Paris law constants with a reverse engineering technique
Branco, R.; Antunes, F. V.; Martins Ferreira, J. A.; Silva, J. M.Paris law constants are commonly obtained with a well established procedure based on standard specimens, notched and pre-cracked. Pre-cracking produces through cracks with stable shapes, nearly straight, similar during all propagation. However, in several situations specimens with corner and surface cracks are recommended. In these cases cracks having significant propagation will continuously modify their shape...
Caracterização da violência sexual em mulheres atendidas no projeto Maria-Maria...
Lopes,Ione Maria Ribeiro Soares; Gomes,Keila R. O.; Silva,Benedito Borges da; Deus,Maria Castelo Branco R. de; Galvão,Elisa Rosa de C. G. NunesOBJETIVO: avaliar as características da violência sexual contra mulheres, os tipos de crimes sexuais e as lesões corporais resultantes. METODOS: estudo descritivo baseado nas informações de 102 prontuários de vítimas de violência sexual atendidas no Projeto Maria-Maria, de março de 2002 a março de 2003, que atendiam aos critérios de elegibilidade. Foram descritos as características da violência, os tipos de cri...
Caracterização da arquitetura interna das bacias do Vale do Cariri (NE do Brasi...
Castro,D. L. de; Castelo Branco,R. M. G.A região do Vale do Cariri, entre os estados do Ceará, Paraíba e Pernambuco, engloba as principais bacias interiores cretácicas do Nordeste do Brasil (bacias do Araripe, Rio do Peixe, Iguatu e Lima Campos, entre outras). Atualmente esta região apresenta uma considerável cobertura de estações gravimétricas, pertencente aos acervos de dados geofísicos do Instituto Brasileiro de Geografia e Estatística (IBGE) e do...
Penicillium restrictum lipases: A comparative study and characterization of enz...
JESUS,M.F.C.P.; BRANCO,R.N.; SANT'ANNA JR,G.L.; FREIRE,D.M.G.; SILVA,J.G.Penicillium restrictum was identified as a promising strain for lipase production due to enzyme production yield and thermal stability of the enzyme. This work presents results of lipase purification and enzyme stability versus pH. Ultrafiltration and precipitation with ammonium sulphate were used as initial purification steps. The partially purified enzyme preparation showed an increase in stability as pH incr...
Visceral leishmaniasis and HIV infection: the diagnostic and therapeutic proble...
Rocha, P S; Serviço de Medicina 2, Hospital Universitário de Santa Maria, Lisboa.; Rebocho, L; Alvoeiro, L; Lourenço, G; Branco, R; Victorino, R MWe present the case of an HIV-seropositive drug addict patient whose seropositivity was unknown until admission to hospital, where he presented with a clinical picture of fever splenomegaly and weight loss. A diagnosis of visceral leishmaniasis was established. We stress the diagnostic difficulties well expressed in the need to repeat the bone marrow aspirate to detect the presence of leishmanias. The lack of r...
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