Encontrados 11 documentos, a visualizar página 1 de 2
Cefaleia pós-punção da dura máter
Veiga, R; Pinheiro, N; Vilaça, MJ; Morais, S; Carmona, CApresenta uma revisão da anatomia, fisiopatologia,clinica, diagnóstico e tratamento das cefaleias pos punção da dura mater. Faz uma revisão da casuistica do serviço de anestesiologia em relação a esta entidade clinica e apresenta alguns casos clinicos de cefaleias para diagnóstico diferencial com as cefaleias pós punção da dura mater.
Argamassas com base em cal para a reabilitação de rebocos
Faria, Paulina; Branco, T.; Carneiro, J.; Veiga, R.; Santos-Silva, A.PATORREB 2012 – 4º Encontro sobre Patologia e Reabilitação de Edifícios, Santiago de Compostela,12-14 Abril 2012
Lime-metakaolin mortars for historical buildings repair: study of the hardening...
Faria, Paulina; Gameiro, A.; Santos-Silva, A.; Veiga, R.; Velosa, A.International Conference Durable Structures: from construction to rehabilitation. Lisbon, LNEC, 31 May-1 June 2012 ; Formulation of mortars with adequate durability and strength is nowadays one of the major challenges in historical buildings repair. Pozzolanic materials have been used during centuries in air lime mortars to improve their mechanic and durability characteristics. This paper is part of an extensi...
Severe intracranial haemorrhage in neonatal alloimmune thrombocytopenia
Silva, F; Morais, S; Sevivas, T; Veiga, R; Salvado, R; Taborda, ANeonatal alloimmune thrombocytopenia is a rare (1/1000-5000 births) life-threatening disorder, caused by fetomaternal incompatibility for a fetal human platelet alloantigen inherited from the father, with production of maternal alloantibodies against fetal platelets, leading to severe thrombocytopenia and potential bleeding. Intracranial haemorrhage is the most feared complication. This report presents the case...
Estimation of RF PA Non-Linearities After Cross-Correlating Current and Output ...
Mota, P. F.; Machado da Silva, J. A.; Veiga, R. A.The estimation of 1 dB compression and third-order intercept points can be obtained after the cross-correlation between dynamic current and output voltage of radio frequency power amplifiers. This estimation is performed using actual power measures and not power inferred from voltage measurements. The underlining theory and a correlator that allows implementing this measurement on-chip are presented. The trade-...
Accumulation and long-term behavior of radiocaesium in tropical plants
Carvalho,C.; Mosquera,B.; Anjos,R. M.; Sanches,N.; Bastos,J.; Macario,K.; Veiga,R.The accumulation and distribution of 40K and 137Cs in tropical plant species were studied through measurements of gamma-ray spectra from mango, avocado, guava, pomegranate, chili pepper, papaya and manioc trees. Our goal was to infer their differences in the uptake and translocation of ions to the aboveground plant parts and to establish the suitability of using radiocaesium as a tracer for the plant uptake of ...
Complete fusion of weakly bound nuclei applying the delayed X-ray technique: th...
Gomes,P. R. S.; Padron,I.; Capurro,O.A.; Fernández Niello,J.O.; Martí,G.V.; Anjos,R. M.; Lubian,J.; Veiga,R.; Crema,E.; Pacheco,A.J.; Testoni,J.E.The detection of delayed X-rays produced by the decay that follows electron capture in the residual nuclei has been used in the past for the determination of fusion cross sections of tightly bound nuclei. In this work we applied this technique to study the effect of the break-up of a weakly bound projectile, like in the case of the 9Be + 144Sm system. Preliminary results of the complete fusion in this system at...
Radioecological investigations in Brazilian tropical plants
Carvalho,C.; Mosquera,B.; Veiga,R.; Anjos,R. M.The accumulation and long term behavior of radiocesium in chili pepper trees (Capsicum fructescens) were studied. The trees to be analyzed had been cultivated at one of the sites where the Goiânia radiological accident occurred and one of them transplanted to another site with uncontaminated soil. The aim of this paper is to examine the decline of 137Cs as function of time and verify how this radionuclide and 4...
137Cs distribution in guava trees
Mosquera,B.; Veiga,R.; Mangia,L.; Carvalho,C.; Estellita,L.; Uzeda,D.; Facure,A.; Violini,B.; Anjos,R. M.This paper presents results of 137Cs concentration measured from a guava tree cultivated after the first decontamination work of one of the sites where the worst Brazilian radiological accident occurred. The present work aims to verify how the 137Cs is transported and distributed along the tropical trees. Bi-dimensional analyses of the radial distribution of 137Cs in the main trunk are also presented. Neither s...
Fusion cross section measurements for systems 6Li + 27Al,64Zn at near-barrier e...
Rodríguez,M.D.; Padron,I.; Martí,G.V.; Anjos,R.M.; Gomes,P.R.S.; Lubian,J.; Veiga,R.S.L.; Pacheco,A.J.; Capurro,O.A.; Fernández Niello,J.O.Fusion cross-sections were measured for the 6Li+27 Al,64 Zn and 9Be+64Zn systems at energies around the Coulomb barrier, in order to study the influence of the break-up of weakly bound nuclei on the fusion process.
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