Sökning: "chain-extension"

Visar resultat 1 - 5 av 8 avhandlingar innehållade ordet chain-extension.

1. 1. 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

3. 2. Rehabilitation following bone-patellar tendon-bone graft ACL reconstruction

   Författare :Christina Mikkelsen; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :ACL injury; ACL reconstruction; ACL rehabilitation; Anterior knee laxity; Closed kinetic chain; Extension deficit; Functional outcome score; Gender; Hyperextension brace; Isokinetic open kinetic chain; KOOS; KT-1000 arthrometer; Patello femoral pain; Personality characteristics; Physical activity; Quadriceps torque; Range of motion;

   Sammanfattning : The overall purpose of this Thesis was to improve treatment and rehabilitation after anterior cruciate ligament (ACL) reconstruction with bone-patellar tendon-bone graft. Study I: The purpose of this study was to evaluate and compare closed kinetic chain (CKC) training and a combination of closed and open kinetic chain (OKC) quadriceps exercises following ACL reconstruction on anterior knee laxity and isokinetic muscle torque. LÄS MER

4. 3. Essays on Spatial Economies and Organization

   Författare :Marcus Sundberg; Lars Lundqvist; Geoffrey J.D. Hewings; KTH; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; spatial computable general equilibrium; monopolistic competition; dynamic; organization; new economic geography; fragmentation; production chains; vertical; horizontal; regional economics; trade.; Business and economics; Ekonomi; Economics; Nationalekonomi; Economic geography; Ekonomisk geografi;

   Sammanfattning : This thesis concerns both static and dynamic modeling in a spatial computable general equilibrium setting. First, we have applied a static framework for the assessment of economic impacts of the Öresund bridge. Secondly, we make an attempt to enhance the static framework through the introduction of economic dynamics. LÄS MER

5. 4. Utilizing lignocellulose-based building blocks to develop recyclable polyesters

   Författare :Nitin Valsange; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biobased; Polyester; Recycling;

   Sammanfattning : With the growing global population and the demand for new applications, the production of fossil-based plastics is continuously increasing. This has led to serious environmental concerns about the depletion of fossil resources, land and marine pollution, and generation of greenhouse gas emissions. LÄS MER

7. 5. Structure and Dynamics of Hydrated Biopolymers

   Författare :Poornima Ramamohan; Jakob Wohlert; Istvan Furo; Fritjof Nilsson; KTH; []
   Nyckelord :Hydrated Polysaccharides; Molecular Dynamics Simulations; Structure-Function Properties; Convergence of Equilibrium Timescales; Chemical Heterogeneity; Hydrerade polysackarider; molekylära dynamiksimuleringar; struktur- funktionsegenskaper; konvergens av jämviktstidskalor; kemisk heterogenitet; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Sammanfattning : Hydrated polysaccharide systems primarily using xylans along with mutans and alternans were studied using long atomistic simulations over a few microseconds to analyse structure-function relationships and nanoscale interactions with moisture. The influence of various structural and chemical factors such as alignment, nature of glycosidic linkage, effect of moisture / chemical substitutions was explored with a focus on structure-dynamics correlations to aid in the effective functionalisation of biomaterials for the development of a green, circular bioeconomy. LÄS MER