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Body composition phenotypes in systemic lupus erythematosus and rheumatoid arth...
Santos, MJ; Vinagre, F; Silva, J; Gil, V; Fonseca, JOBJECTIVES: The amount and distribution of fat and lean mass have important implications for health and systemic inflammation may represent a risk for altered body composition. The aim of this study was to analyse whether changes in body composition are similarly associated with systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA), two inflammatory conditions of different pathogenesis. METHODS: Bod...
Cardiovascular risk profile in systemic lupus erythematosus and rheumatoid arth...
Santos, MJ; Vinagre, F; Silva, J; Gil, V; Fonseca, JOBJECTIVE: Premature atherosclerosis is well-documented both in Systemic Lupus Erythematosus (SLE) and in Rheumatoid Arthritis (RA) patients, but cardiovascular (CV) risk is particularly high in lupus women. Although conventional CV risk factors do not fully explain the excessive risk in inflammatory diseases, they remain major contributors to atherosclerosis. The aim of the present study was to investigate whe...
Method for effective dead time measurement in counting systems
Vinagre, F. L. R.; Conde, C. A. N.The counting losses introduced by the dead time of a counting system are a limiting factor in counting measurements. The purpose of this work is to report an efficient method for the measurement of the effective dead time of a counting system and to characterize its dead time behavior, providing a way to investigate each experimental situation. The method, which we designate as Delayed and Mixed Pulses method, ...
A technique for the absolute measurement of the W-value for X-rays in counting ...
Vinagre, F. L. R.; Conde, C. A. N.A technique was developed for the absolute measurement of the W-value (the mean energy for the production of an electron-ion pair) for low-energy X-rays in a wide range of gases at atmospheric pressures, with a standard uncertainty better than 1%. This technique is based on the absolute measurement of the primary ionization charge produced by X-ray photons from a constant intensity monoenergetic X-ray source, e...
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