Role of oceans as biogenic sources of selenium

Role of Ontology in Semantic Web Development

Role of Planetesimals in Comparative Planetology

Role of solar activity in formation of the anomalous El Nin'o current

Role of solar X-ray flares and CME in the E region ionosphere of Mars: MGS observations

Role of sulphur photochemistry in tropical ozone changes after the eruption of Mount Pinatubo

Role of surface speciation in the low-temperature dissolution of minerals

Role of the 'fountain effect' in the equatorial ionosphere in the prolonged conservation of radioactive products from the Starfish explosions at heights of the F region

Role of the 'fountain effect' in the equatorial ionosphere in the prolonged retention of radioactive products of the 'Starfish' explosion at F-region altitudes

Role of the motion of charged particles along and across the spiral interplanetary magnetic field in particle-transport processes

Role of the radiative association reaction of atomic oxygen in the earth's atmosphere

Role of the Stratospheric Polar Freezing Belt in Denitrification

Role of trace element partition coefficients in models of andesite genesis

Role of transition metal ferrocyanides (II) in chemical evolution

Role of UV stellar intensity measurements in atmospheric transmissions modelling

Role of variation in vertical profiles of relative humidity on retrieval of humidity from AMSU-B data

Role of Weak Ties in Link Prediction of Complex Networks

Role of Whitlockite and Apatite in Lunar Felsite

Role-Based Access Controls

Role-Dynamics: Fast Mining of Large Dynamic Networks