Sökning: "limestone"
Visar resultat 16 - 20 av 99 avhandlingar innehållade ordet limestone.
16. Weathering of mining waste rock containing alum shale and limestone
Sammanfattning : Geochemical processes occurring in the waste rock dumps ofan old phosphate mine, located in Maardu, northem Estonia, havebeen studied and modelled. The waste rock contains pyritic,metalliferous and organic-rich shale, as well as limestone.Production of acidity during pyrite oxidation is a potentialmechanism for heavy metal release. LÄS MER
17. Small-scale pattern and mobility of plant species in Alvar grassland
Sammanfattning : Studies of the small-scale pattern, mobility of plant species and the effects of cattle dung deposition and decomposition on the soil seed banks and the above-ground vegetation were carried out in an alvar limestone grassland in Gettlinge, on the Baltic island of Öland, Sweden.A new method for pattern detection using transect data Patch Size Frequency Analysis (PASFRAN), was developed. LÄS MER
18. Cypriots in stone. Limestone sculpture in late Hellenistic and Roman Cyprus
Sammanfattning : .... LÄS MER
19. Development of strength and heat of hydration of young concrete at low temperature : influence of granulated blast furnace slag, silica fume and limestone filler
Sammanfattning : .... LÄS MER
20. Slurry rheology of limestone and its effects on wet ultra-fine grinding
Sammanfattning : This thesis investigates rheology of limestone slurries and its effects on wet ultra-fine grinding in order to reduce energy cost and increase the throughput and the product fineness. The influences of solids concentration, molecular weight of a dispersant, particle size and distribution, and temperature on the rheological behaviours of limestone slurries have been investigated with rotational and cone-plate viscometers. LÄS MER