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The mechanical stress build up in fibre handling, the dynamical frictional phenomena between fibres and curves surfaces and formation of dust have been studied. Typical are stick slip behaviour and threshold stress levels for formation of dust. The emissions of dust can be limited by electrostatic charging. The measured coefficients of friction of the fibres depend on the mechanical properties, mi
One of the major challenges in analytical chemistry is to find techniques and methods for determinations of low abundance compounds in complex sample matrices. This thesis describes the development of new miniaturised analytical techniques comprising capillary electroseparation combined with mass spectrometric detection. The techniques are rapid, sensitive, efficient, and suitable even for analyte
I urbaniseringens fotspår materialiseras fattigdomen i slum, kåkstäder och favelas i städer värl-den över. Trots millenniemålen om att minska antalet invånare som lever i slum, visar statistik från FN-Habitat att urbaniseringstakten ökar och att städernas fattiga idag utgör en fjärdedel av världens stadsinvånare. Fattigdomen i städer och den undermåliga byggda miljö människor tvingas leva i, denna
No abstract. Titel i svensk översättning: Jämförelse mellan Japan och Sverige.
Popular Abstract in Swedish Celiaki eller glutenintolerans innebär att tarmluddet skadas vid kontakt med gluten. Gluten är bindeämnet i mjöl, mest i vete, men finns också i råg, korn och havre. Gluten är alltså ett vanligt inslag i vår moderna kost. Sjukdomen kan starta när som helst i livet. I Sverige upptäcks den oftast under småbarnsåren, i samband med att barnet börjar få i sig gluten, till eThe true prevalence of coeliac disease includes patients with symptomatic/diagnosed disease, and silent or undiagnosed disease. The incidence of diagnosed coeliac disease increased steeply in Swedish children born after 1982, when a change in infant feeding recommendations was made. This change included a delayed introduction of gluten, but the effect was also an increased consumption. The change
Popular Abstract in English Extraction of valuable substances from plants using a solvent has been practised in many fields. One of the examples is making coffee or tea using hot water. In agricultural and food industry, there are tons of wastes containing valuable compounds that can be extracted before they go to incineration. Extractions are usually performed in organic solvents such as methanolPressurised hot water is an environmentally friendly alternative to hazardous organic solvents such as methanol and heptane. One of the many applications of using pressurised hot water extraction (PHWE) is to extract polyphenols from plants. The challenges in PHWE lies with the optimisation of extraction yield. One factor that is often overlooked is the risk of degradation of thermally labile comp
