We present 20 new variable stars discovered at the Astronomical Observatory of the Autonomous Reg... more We present 20 new variable stars discovered at the Astronomical Observatory of the Autonomous Region of the Aosta Valley in the course of observations carried out from April to October 2010. The list of the newly discovered stars comprises 19 pulsating variables (two of them should be classified as Delta Scuti and 16 as Mira Ceti-type/Semi-Regular pulsators), and one W
The evaluations of the different components of the radiation environment in spacecraft, both in L... more The evaluations of the different components of the radiation environment in spacecraft, both in LEO orbits and in deep space is of great importance because the biological effect on humans and the risk for instrumentation strongly depends on the kind of radiation (high or low LET). That is important especially in view of long term manned or unmanned space missions, (mission to Mars, solar system exploration). The study of space radiation field is extremely complex and not completely solved till today. Given the complexity of the radiation field, an accurate dose evaluation should be considered an indispensable part of any space mission. Two simulation codes (MCNPX and GEANT4) have been used to assess the secondary radiation inside FO-TON M3 satellite and ISS. The energy spectra of primary radiation at LEO orbits have been modelled by using various tools (SPENVIS, OMERE, CREME96) considering separately Van Allen protons, the GCR protons and the GCR alpha particles. This data are used ...
Long-term space exploration, colonization or habitation requires biological life support systems ... more Long-term space exploration, colonization or habitation requires biological life support systems capable to cope with the deleterious space environment. The use of oxygenic photosynthetic microrganisms is an intriguing possibility mainly for food, O2 and nutraceutical compounds production. The critical points of utilizing plantsor algae-based life support systems are the microgravity and the ionizing radiation, which can influence the performance of
We present 20 new variable stars discovered at the Astronomical Observatory of the Autonomous Reg... more We present 20 new variable stars discovered at the Astronomical Observatory of the Autonomous Region of the Aosta Valley in the course of observations carried out from April to October 2010. The list of the newly discovered stars comprises 19 pulsating variables (two of them should be classified as Delta Scuti and 16 as Mira Ceti-type/Semi-Regular pulsators), and one W
The evaluations of the different components of the radiation environment in spacecraft, both in L... more The evaluations of the different components of the radiation environment in spacecraft, both in LEO orbits and in deep space is of great importance because the biological effect on humans and the risk for instrumentation strongly depends on the kind of radiation (high or low LET). That is important especially in view of long term manned or unmanned space missions, (mission to Mars, solar system exploration). The study of space radiation field is extremely complex and not completely solved till today. Given the complexity of the radiation field, an accurate dose evaluation should be considered an indispensable part of any space mission. Two simulation codes (MCNPX and GEANT4) have been used to assess the secondary radiation inside FO-TON M3 satellite and ISS. The energy spectra of primary radiation at LEO orbits have been modelled by using various tools (SPENVIS, OMERE, CREME96) considering separately Van Allen protons, the GCR protons and the GCR alpha particles. This data are used ...
Long-term space exploration, colonization or habitation requires biological life support systems ... more Long-term space exploration, colonization or habitation requires biological life support systems capable to cope with the deleterious space environment. The use of oxygenic photosynthetic microrganisms is an intriguing possibility mainly for food, O2 and nutraceutical compounds production. The critical points of utilizing plantsor algae-based life support systems are the microgravity and the ionizing radiation, which can influence the performance of
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