Sökning: "Ulrica Edlund"

Visar resultat 1 - 5 av 23 avhandlingar innehållade orden Ulrica Edlund.

1. 1. Design of new biodegradable polymer matrices for controlled drug delivery

   Författare :Ulrica Edlund; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polymer chemistry; Polymerkemi;

   Sammanfattning : Conventional drug administration technologies display poorcontrollability, and lead to high plasma concentrations andshort duration times, which frequently lead to adverse effects.Controlled release technology aims at predictable andreproducible delivery of an active substance over an extendedperiod of time, yielding optimal response and prolongedefficiency, and thus offering considerable improvement of manytreatments. LÄS MER

3. 2. Psychosocial Vulnerability Underlying Unhealthy Behaviours in Swedish Adolescents

   Författare :Ulrica Paulsson Do; Ragnar Westerling; Birgitta Edlund; Christina Stenhammar; Urban Janlert; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Adolescents; Health-related behaviours; Social environments; Social relationships; Socio-economic status; Unhealthy behaviours; Vulnerability; Well-being; Social Medicine; Socialmedicin;

   Sammanfattning : The overall aim was to examine the relationship between Swedish school adolescents´ health-related behaviours and psychosocial and socio-demographic factors, with the purpose of identifying vulnerability factors for unhealthy behaviours and exploring adolescents’ own experiences and thoughts about this.Three studies were quantitative cross-sectional studies and used data from two different questionnaires. LÄS MER

4. 3. Chemical Properties and Thermal Behaviour of Kraft Lignins

   Författare :Ida Brodin; Göran Gellerstedt; Elisabeth Sjöholm; Hans Theliander; Ulrica Edlund; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; Analytisk kemi;

   Sammanfattning : Research concerning lignin has increased during the last years due to its renewability and ready availability in black liquor at pulp mills. Today, the kraft lignin found in black liquor is used as a fuel to gain energy in the recovery boiler at the mill. LÄS MER

5. 4. Strategies for Renewable Barriers with Enhanced Performance

   Författare :Anas Ibn Yaich; Ulrica Edlund; Ann-Christine Albertsson; Monika Österberg; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood hydrolysate; xylan; birch; layered silicates; oxygen barrier; packaging; film; coating; reductive amination; chain-extension; cationic cellulose; polyelectrolyte complexes; hemicellulose; vedhydrolysat; xylan; björk; silikat; syrgasbarriär; förpackningar; film; bestrykning; reducerande aminering; kedjeförlängning; katjonisk cellulosa; polyelektrolytkomplex; hemicellulosa; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Sammanfattning : Forest biomass is expected to play an increasingly important role in tomorrow´s global bio-economy as one of the main renewable sources of materials, chemicals and energy. In the framework of the biorefinery concept, the forestry industry is looking for new processes to utilize several fractions in the biomass (cellulose, hemicelluloses, lignin etc. LÄS MER

7. 5. Wood hydrolysate Barriers

   Författare :Anas Ibn Yaich; Ulrica Edlund; Ann-Christine Albertsson; Margaretha. Söderqvist-Lindblad; Inger Odnevall-Wallinder; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wood hydrolysate; xylan; hemicellulose; layered silicates; oxygen barrier; packaging; film; coaing; birch.;

   Sammanfattning : Wood hemicellulose is an abundant but fairly unexploited renewable feedstock. Recent studies have shown that hemicelluloses have a large potential for use in the food packaging industry as a sustainable alternative to the conventional oxygen-barrier materials used today. LÄS MER