Sökning: "carbonate system"

Visar resultat 21 - 25 av 84 avhandlingar innehållade orden carbonate system.

1. 21. Energy and environmental optimization of some aspects of EAF practice with novel process solutions

   Författare :Andrei Chychko; Seshadri Seetharaman; Lidong Teng; Shouyi Sun; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Molybdates; slag foaming; steel alloying; EAF; carbonate decomposition; Materials science; Teknisk materialvetenskap;

   Sammanfattning : The objective of the present thesis is to optimize the electric arc furnace (EAF) practice from an environmental view point. Two aspects that meet the requirements of the secondary steelmaking industries today, viz. LÄS MER

3. 22. Advanced Methods for Evaluation of the Performance of Complex Drug Delivery System

   Författare :Caroline Alvebratt; Christel Anna Sofia Bergström; Maria Strömme; Caitriona O'Driscoll; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; amorphous solid dispersion; coadministration; digestion; dissolution; drug absorption; enabling formulation; in vitro assay; lipid-based formulation; mesoporous carrier; supersaturation; Farmaceutisk vetenskap; Pharmaceutical Science;

   Sammanfattning : Low oral bioavailability of drugs originating from poor aqueous solubility is a common issue in drug development. Various enabling formulations have been presented to circumvent this limitation, many making use of supersaturation. In these, the drug is delivered to the gastro-intestinal lumen in a high energy state e.g. LÄS MER

4. 23. Stratigraphy and facies of Middle Silurian epicontinental carbonate platform deposits of Gotland, Sweden

   Författare :Mikael Calner; Berggrundsgeologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fysisk geografi; Geologi; Geology; physical geography;

   Sammanfattning : The Silurian foreland of Scandinavia included a vast epicontinental carbonate platform system of which the island of Gotland (Sweden) is an erosional remnant. This thesis treats the Late Wenlock succession (Cyrtograptus lundgreni, Pristiograptus dubius parvus, Gothograptus nassa, Colonograptus(?) praedeubeli, and the Co(?) deubeli zones), and emphasises the sedimentology and biostratigraphy of these deposits. LÄS MER

5. 24. Shipborne geophysical study of an Ordovician-Silurian carbonate platform, Fårö - Hiiumaa area, northeastern Baltic Sea

   Författare :Igor Tuuling; Jan Bergström; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Historical Geology and Paleontology; historisk geologi och paleontologi;

   Sammanfattning : The lithological-stratigraphical subdivision, the internal structure and the present relief of the Lower Paleozoic bedrock sequence was investigated by means of high resolution shallow marine seismic reflection profiling in the northeastern Baltic Sea.The Cambrian, as well as the lowermost Silurian layers, show rapidly changing lithologies and thicknesses and provide no trans-Baltic seismic reflectors. LÄS MER

7. 25. Development and characterization of functional composite materials for advanced energy conversion technologies

   Författare :Liangdong Fan; Bin Zhu; Torsten Fransson; Mahmut D. MAT; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Low temperature ceramic fuel cell; Ceria-carbonate composite; Electrolysis; Transition metal oxide; Symmetrical fuel cells; All-nanocomposite fuel cell; Electrolyte-free fuel cell; Solar cell; ion conductor and semiconductor; SRA - Energy; SRA - Energi;

   Sammanfattning : The solid oxide fuel cell (SOFC) is a potential high efficient electrochemical device for vehicles, auxiliary power units and large-scale stationary power plants combined heat and power application. The main challenges of this technology for market acceptance are associated with cost and lifetime due to the high temperature (700-1000 oC) operation and complex cell structure, i. LÄS MER