Sökning: "fibre angle"

Visar resultat 36 - 40 av 59 avhandlingar innehållade orden fibre angle.

  1. 36. Mechanical behaviour of hardwoods : effects from cellular and cell wall structures

    Författare :Ingela Bjurhager; Lars Berglund; Ingo Burgert; Magnus Wålinder; KTH; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Wood fibre and forest products; Träfiber- och virkeslära;

    Sammanfattning : Syftet med den här avhandlingen var att undersöka mekaniska egenskaper hos olika arter av lövträd, och koppla egenskaperna till cell- och cellväggsstrukturen i materialet. Arterna som omfattades av undersökningen var Europeisk asp (Populus tremula), hybridasp (Populus tremula x Populus tremuloides) och ek (Quercus robur). LÄS MER

  3. 37. Micromechanics of softwoods in the transverse plane : effects on cell and annual ring scales

    Författare :Carl S. Modén; Lars Berglund; Per Johan Gustafsson; KTH; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Wood fibre and forest products; Träfiber- och virkeslära; Engineering mechanics; Teknisk mekanik; Biomaterials; Biomaterial;

    Sammanfattning : Transverse mechanical properties of wood are important in many practial applications and an interesting scientific subject. A very low transverse shear modulus has been identified in spruce, which causes large strain concentrations in wood structures. LÄS MER

  4. 38. Development of High-Protein Oat for the Feed and Food Industry

    Författare :BINDU SUNILKUMAR; Kemicentrum Centrum för preventiv livsmedelsforskning; []
    Nyckelord :Oats; protein; mutation; segregation; dietary fibre; βglucan; lipids; electophoresis; amino acids; fractionation; avenin; ; dietary fibre; amino acid; beta glucan; crossing; amplification; quality; quantity; high protein; fractionation;

    Sammanfattning : Oats are an excellent source of high-quality proteins, with a favourable amino acid composition. Oat proteins therefore have greatpotential to complement existing animal and plant protein sources, especially if the protein content could be increased. In this thesis,high-protein oat lines were identified and characterised. LÄS MER

  5. 39. Chronic anterior cruciate ligament tear : knee function and knee extensor muscle size, morphology and function before and after surgical reconstruction

    Författare :Lars-Gunnar Elmqvist; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; knee joint; ligaments; articular; surgery; muscle fibre; isokinetics; exercise therapy; muscular atrophy; electromyography;

    Sammanfattning : Knee function was evaluated by knee score, activity level, clinical findings and performance tests, muscle size by computerized tomography (CT), morphology by light (LM) and electron microscopy (EM), muscle function by electromyography (EMG) and isokinetic performance in 29 patients with chronic anterior cruciate ligament (ACL) tear. Preoperatively CT disclosed a significant mean atrophy of the quadriceps and nonsignificant changes of the other muscle areas of the injured leg. LÄS MER

  7. 40. Development of thermoplastic biocomposites based on aligned hybrid yarns for fast composite manufacturing

    Författare :Behnaz Baghaei; Högskolan i Borås; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hybrid yarns; Mechanical properties; Porosity; Weaving; Alkali treatment; Compression moulding; Resursåtervinning; Resource Recovery;

    Sammanfattning : The interest in natural fibres as reinforcement for composite materials has been steadily increasing due to their attractive mechanical properties and the possibility of making more eco-friendly materials. Currently, various alternatives are being introduced for commercial applications, as fibres such as hemp, jute and flax exhibit properties, which make them appropriate for structural composite components. LÄS MER