Sökning: "freeze-thaw stability"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden freeze-thaw stability.

1. 1. Ground freeze-thaw, snow and roads in northern Sweden

   Författare :Maria Sarady; Eva Sahlin; Magnus Bohlin; Hanna Ridefelt; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Ground freeze-thaw; snow depth; roads; northern Sweden; geography; Geography; Geografi;

   Sammanfattning : In this thesis freeze-thaw along roads in northern Sweden is examined. The examinations are put in a context of changing climate and its amplification towards the Arctic region on earth. The research focuses on the impact of a warmer climate on ground freeze-thaw and in exten- sion road maintenance in the region. LÄS MER

3. 2. Starch Pickering Emulsions : Process and Encapsulation Stability

   Författare :Ali Marefati; Avdelningen för livsmedel och läkemedel; []
   Nyckelord :Starch granules; Pickering emulsions; Encapsulation; Freeze-thaw stability; Freeze-drying; In vitro digestion; In vitro intestinal lipolysis;

   Sammanfattning : The emulsion stabilization functionality of surfactants and biopolymers can be replaced by solid particles adsorbed at the interface, where they create a category of emulsions known as Pickering emulsions. Recently, health and environmental concerns have led to new market demand for natural, biodegradable and renewable sources of ingredients. LÄS MER

4. 3. Emulsion formation and stability - Impact of the dispersed state of the emulsifier on emulsification

   Författare :Emma Magnusson; Livsmedelsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Emulsion; phospholipid; dispersed state; field flow fractionation; freeze-thaw stability;

   Sammanfattning : Emulsions find a variety of applications in for example food, cosmetics and pharmaceutical preparations. In order to obtain emulsions with desired properties it is important to understand how different factors, such as the properties of the emulsifier and the emulsification procedure, impact the final emulsion properties. LÄS MER

5. 4. Freezing Temperature Flows in Railway Tunnels and its Consequence on the Rock Supporting Structure, the Rock and the Reinforcing Elements

   Författare :Anna Andrén; Lars-Olof Dahlström; Erling Nordlund; Lars O Ericsson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tunnel; frost penetration; ice formation; freeze-thaw test; frost shattering; temperature measurement; maintenance; degradation of rock and shotcrete; cold climate; Tunnel; köldinträngning; isbildning; frystester; frostsprängning; temperaturmätning; underhåll; nedbrytning av berg och sprutbetong; kallt klimat; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

   Sammanfattning : Water in the surrounding rock mass flows into the tunnel via naturally occurring joints and via cracks caused by the blasting used to excavate the tunnel. The most common method in Sweden to reduce or prevent leakage problems are first and foremost the use of grouting. LÄS MER

7. 5. Stability of zopiclone in whole blood : Studies from a forensic perspective

   Författare :Gunnel Nilsson; Robert Kronstrand; Johan Ahlner; Fredrik Kugelberg; Linköpings universitet; []
   Nyckelord :MEDICINE; MEDICIN;

   Sammanfattning : Bio‐analytical results are influenced by in vivo factors like genetic, pharmacological and physiological conditions and in vitro factors like specimen composition, sample additives and storage conditions. The knowledge of stability of a drug and its major metabolites in biological matrices is very important in forensic cases for the interpretation of analytical results. LÄS MER