Sökning: "Coprecipitation"
Visar resultat 1 - 5 av 13 avhandlingar innehållade ordet Coprecipitation.
1. Phosphate and Arsenic Cycling under Experimental Early Proterozoic Marine Conditions
Sammanfattning : Nutrient dynamics in the Archean-Paleoproterozoic oceans strongly influenced primary productivity and the rise of atmospheric O2. Reconstructing the cycling of key nutrients such as dissolved inorganic phosphate (DIP) at this time is important for our understanding of the timing, rate and extent of atmospheric oxygenation at this time. LÄS MER
2. Superparamagnetic iron oxide nanoparticles for biomedical applications
Sammanfattning : .... LÄS MER
3. Development of procedures for actinide studies : sorption, coprecipitation and solubility of neptunium and plutonium
Sammanfattning : .... LÄS MER
4. Adsorption and surface reaction properties of synthesized magnetite nano-particles
Sammanfattning : The surface chemistry of inorganic materials is of great significance in a number of industrially important processes such as separation of ore by flotation, catalysis, water purification, paper coating and pharmaceutical industry. The purpose of this study has been firsly to develop a method for optimal synthesis of magnetite nanoparticles and secondly to utilize these particles as adsorbent in order to investigate their adsorption/desorption properties. LÄS MER
5. Bi-based high Tc superconductors and enhancement of critical current density
Sammanfattning : Basic bulk high temperature superconductors in the Bi-Sr-Ca-Cu-O system and the BiPb-Sr-Ca-Cu-O system were prepared through the solid state reaction route and the coprecipitation method. The formation of 110 K phase promoted by partial Pb substitution for Bi was studied. Effects of heat treatment on 110K phase formation were studied. LÄS MER