Now showing items 1-3 of 3
SILICA PRESERVATION IN THE OCEANS
This study was undertaken to explain why silica is preserved in the oceans, which are undersaturated in silica. Ion probe, electron probe and SEM analysis of the surface chemistry of radiolarians (a siliceous microfossil) ...
MODELS TO OPTIMIZE THE EVALUATION AND EXTRACTION OF URANIUM FROM SEDIMENTARY ORE DEPOSITS WITH APPLICATIONS TO IN-SITU LEACHING
With increasing demands for nuclear power supplies, more efficient means of evaluation and extraction of sedimentary uranium ore deposits, which form 96% of the U.S. reserves, are required. The fluvial, deltaic, and ...
SOME PROBLEMS CONCERNING THE MIGRATION AND DISTRIBUTION OF HELIUM-4 AND RADON-222 IN THE UPPER SEDIMENTS OF THE CRUST - A THEORETICAL MODEL; AND THE DEVELOPMENT OF A QUADRUPOLE ION FILTER FOR MEASURING HELIUM AT THE SOIL-AIR INTERFACE
The generation, distribution, and migration process of helium-4 and radon-222 in the upper lithosphere and their fluxes at the soil-air interface were extensively reviewed. Global baseline concentration values were obtained ...