chromate [Cr(VI)] species on surfaces of geologic materials. Time-resolved SR-FTIR spectra indicate that, in the presence of endoliths (mineral-inhabiting microorganisms), microbial reduction of Cr(VI) to Cr(III) compounds on basaltic mineral surfaces is the key mechanism of Cr(VI) transformation. It proceeds in at least a two-step reaction with Cr(V) compounds as possible intermediate products...

Experiments were conducted to investigate the mineral phase transformation technology of high-iron red mud, effectively extracting valuable iron minerals and reducing hazards associated with mud stockpiling storage. A magnetic concentrate an grade 55.84% recovery 93.75% could be obtained at a roasting temperature 560 °C, time 15 min, CO concentration 20% total gas flow 500 mL/min. combination X...

Lentil (Lens culinaris Medik.) is an important proteinand carbohydrate-rich food for many developing countries and is also popular in developed countries where they are perceived as a healthy component of the diet. Lentil seeds contain about 24.2% high quality protein, 60% carbohydrates and 2.4 4.2% mineral matter (Hulse 1994). Although lentil is one of the oldest cultivated crop plants, its ag...

Much existing data on the effects of calcium or milk products on bone mineral accretion are based on bone mineral content (BMC) or areal bone mineral density (aBMD), neither of which accounts for changing bone size during the growing period. The aim of this study was to investigate the effects of 2-year milk supplementation on total body size-corrected BMD in Chinese girls with low habitual die...