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Promoção da saúde e actividade física: contributos para o desenvolvimento humano
Lopes, Vítor P.; Rodrigues, Vítor; Coelho, E.; Monteiro, M.J.A inactividade física é um dos principais factores de risco associados ao desenvolvimento de diferentes patologias, sendo considerada uma questão fundamental de saúde pública nos países ocidentais. Diversas medidas têm sido adoptadas no sentido de favorecer a prática regular de actividade física, de acordo com as directrizes de organismos internacionais, verificando-se um aumento significativo do nível de infor...
Multichannel photomultiplier for multipass thomson scattering diagnostics
Monteiro,M. J. R.; Machida,M.; Daltrini,A. M.; Berni,L. A.The application of a new multichannel 64 parallel amplification 10 stage photomultiplier arranged in 8 x 8 matrix of 20.32 mm x 20.32 mm, detector XP1752 from Philips, for laser light scattering diagnostics is now under development. Signal intensity calibration curve for eight parallel and individual channels, as well as cross talk between channels was measured. Also, Rayleigh scattering on nitrogen gas, normal...
Tokamak NOVA-UNICAMP recent results
Daltrini,A.M.; Machida,M.; Monteiro,M.J.R.; Kaminishikawahara,C. O.Tokamak NOVA-UNICAMP is a small tokamak with iron core and conducting shell stabilization built to study plasma-wall interaction and optical diagnostic development. Characteristic plasma behavior was the appearance of 2-3 kHz spike oscillation during entire discharge with very high X-ray activity which prevent our optical diagnostic development. By modifying capacitance and charging voltage on OH and vertical f...
Comparison of two multipass configurations for scattered light amplification
Monteiro,M.J.R.; Machida,M.; Daltrini,A.M.; Berni,L.A.Scattered light amplification by using multipass method is a very useful technique to increase Thomson and Rayleigh scattering signals for local plasma electron temperature and density measurements. Using Rayleigh scattering in nitrogen neutral gas chamber, the well-known technique of multipass system with two concentrical spherical mirrors is compared with new configuration by using two sets of lens and at mir...
Vacuum ultraviolet and visible spectroscopy diagnostics on the NOVA-UNICAMP tok...
Daltrini,A.M.; Machida,M.; Monteiro,M.J.R.Three visible and one VUV spectrometers covering four toroidal positions have been set to study He and H plasma created by NOVA-UNICAMP tokamak. Ion temperatures have been measured at the beginning of the tokamak discharge by Doppler broadening of C, O and He lines. The time evolution of carbon line emissions, with different degrees of ionization, showed to have opposite behavior between high and low plasma ion...
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