Sökning: "strain development"

Visar resultat 1 - 5 av 582 avhandlingar innehållade orden strain development.

  1. 1. Strength grading of structural timber and EWP laminations of Norway spruce : Development potentials

    Författare :Jan Oscarsson; Anders Olsson; Marie Johansson; Mikael Perstorper; SP Sveriges Tekniska Forskningsinstitut; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; bending strength; fibre angle; grain angle; knots; laser scanning; machine strength grading; modulus of elasticity; strain measurement; structural timber; tensile strength; wood; böjhållfasthet; draghållfasthet; elasticitetsmodul; fibervinkel; konstruktionsvirke; kvistar; laserskanning; maskinell hållfasthetssortering; trä; töjningsmätning; Byggteknik; Civil engineering;

    Sammanfattning : Strength grading of structural timber is a process by which value is added to sawn products. It is to the greater part carried out using machine grading based on statistical relationships between so called indicating properties and bending strength. LÄS MER

  3. 2. Revealing invisible strain : Magnetic Fabric Analysis as Strain Indicator in Analogue Models and Nature

    Författare :Thorben Schöfisch; 0000-0002-1872-052x Hemin; Bjarne Almqvist; Stefan Luth; Ian Alsop; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analogue Modelling; Magnetic Fabric Analysis; AMS; Strain distribution; Geovetenskap med inriktning mot mineralogi; petrologi och tektonik; Earth Science with specialization in Mineral Chemistry; Petrology and Tectonics;

    Sammanfattning : Strain is accommodated by folding, thrusting and an “invisible” component, known as penetrative strain. Magnetic fabric analysis allows for identification and quantification of this imperceivable strain. In this thesis, magnetic fabric analysis is applied to quantify strain in analogue sandbox models. LÄS MER

  4. 3. Strength grading of structural timber and EWP laminations of Norway spruce : Development potentials and industrial applications

    Författare :Jan Oscarsson; Anders Olsson; Marie Johansson; Hans Joachim Blass; SE-351 96 Växjö Videum Science Park SP Technical Research Institute of Sweden SP Wood Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fibre angle; grain angle; knots; laser scanning; machine strength grading; modulus of elasticity; side boards; strain; structural timber; wet gluing; wood; Byggteknik; Civil engineering;

    Sammanfattning : Machine strength grading of structural timber is a sawmill process by which considerable value is added to sawn products. The principle of such grading is that the strength of a timber member is predicted on the basis of a so called indicating property (IP) which, in general, represents an averaged value of the modulus of elasticity (MOE) measured over a board length of about one meter or more. LÄS MER

  5. 4. Bioprocess development for biochemical conversion of lignocellulose

    Författare :Ruifei Wang; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lignocellulose; strain engineering; stress tolerance; kinetic modelling; high gravity; scale-up; biofuels; SSCF; process development; Saccharomyces cerevisiae;

    Sammanfattning : Due to its low environmental impact and high maturity of the fuel ethanol market, lignocellulosic ethanol is a promising option for reducing the carbon footprint in the transport sector. The characteristics of lignocellulosic feedstocks, such as varied sugar composition, low sugar density, low solubility, recalcitrance to enzymatic degradation, and inhibitors formed during thermochemical pretreatment, have so far limited the production process, and costs for conversion of lignocellulosic materials to ethanol are still high. LÄS MER

  7. 5. Imaging the pancreas : new aspects on lobular development and adult constitution

    Författare :Andreas Hörnblad; Ulf Ahlgren; Guy Rutter; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Type 1 diabetes; ß-cell mass; tertiary lymphoid organs; biomedical imaging; optical projection tomography; morphogenesis; pancreas development; gastric lobe; spleen development.; medicinsk genetik; Medical Genetics; medicinsk utvecklings- och neurobiologi; Developmental Neurosciences; molekylär medicin genetik och patologi ; molecular medicine  genetics and pathology ;

    Sammanfattning : The mouse pancreas is a mixed exocrine and endocrine glandconsisting of three lobular compartments: the splenic, duodenal and gastric lobes. During embryogenesis, the pancreas forms from two progenitor populations located on the dorsal and ventral side of the primitive gut tube. LÄS MER