Nuclear safety has always been a focal point in the field of nuclear applications. Mobile robots carrying specific sensors for nuclear-radiation detection have become an alternative to manual detection. This work presents autonomous α/β radiation mapping framework, using mobile robot light and ranging (LiDAR) nuclear-radiation-detection sensor. The method employs simultaneous localization (SLAM...

In the present paper, an investigation on natural and anthropic radioactivity heavy metals content in a basalt aggregate for concrete from Sicily, Southern Italy, was performed as case study. particular, evaluation of specific activity radium-226, thorium-232, potassium-40 caesium-137 radionuclides by using High-Purity Germanium (HPGe) γ-ray spectrometry, together with estimation several indexe...

BACKGROUND Emerging empirical evidence suggests exposure to "green" environments may encourage higher levels of physical activity among children. Few studies, however, have explored this association exclusively in pre-school aged children in the United States. We examined whether residing in neighborhoods with higher levels of greenness was associated with higher levels of outdoor physical acti...

OBJECTIVES To identify risk factors for indoor and outdoor falls. DESIGN Prospective cohort study. SETTING The MOBILIZE Boston Study, a study of falls etiology in community-dwelling older individuals. PARTICIPANTS Seven hundred sixty-five women and men, mainly aged 70 and older, from randomly sampled households in the Boston, Massachusetts, area. MEASUREMENTS Baseline data were collecte...

BACKGROUND A cohort study that examined iron ore mining found negative associations between cumulative working time employed underground and several outcomes, including mortality of cerebrovascular diseases. In this cohort study, and using the same group of miners, we examined whether work in an outdoor environment could explain elevated cerebrovascular disease rates. METHODS This study was b...