Sökning: "Short fibres"

Visar resultat 1 - 5 av 29 uppsatser innehållade orden Short fibres.

  1. 1. Distortion and attenuation free gain-assisted Superluminal Propagtion in a Rare-Earth Doped Crystal

    Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Antonius Johannes Renders; [2023]
    Nyckelord :Fast Light; Superluminal Propagation; Negative group velocity; Rare earth; Physics and Astronomy;

    Sammanfattning : A light pulse that travels through a narrow spectral window, i.e. a frequency range of low absorption, within a strongly absorbing frequency range will be delayed due to strong dispersion. LÄS MER

  3. 2. Fibre volume fractions’ and printing directions’ effects on tribological and mechanical properties in FDM printed carbon fibre reinforced PEEK : Suitability assessment of FDM printed PEEK-CF to act in a steam engine’s ball joint, by analysis of compressive properties, impact strength, friction and wear

    Master-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Författare :William Tönnberg; [2022]
    Nyckelord :Ranotor; steam engine; PEEK; polyether-ether-ketone; carbon fibre reinforced PEEK; impact strength; compressive strength; compressive modulus; friction; wear; tribology; FFF; FDM; 3D-printing; printing parameters;

    Sammanfattning : The purpose with this study was to investigate FDM/FFF manufactured carbon fibre reinforced PEEK and assess its suitability to act as a sealing- and bearing material in a modern steam engine’s ball joint. The steam engine is totally free from oil due to the risk of water- and steam contamination. LÄS MER

  4. 3. EVALUATION OF ENVIRONMENTAL AND TECHNICAL PERFORMANCE OF ALTERNATE FIBRES FOR SHOTCRETE IN TUNNELS

    Master-uppsats, KTH/Betongbyggnad

    Författare :Shilpa Anand; [2022]
    Nyckelord :Shotcrete; Life cycle assessment; Environmental Product Declaration; Global warming potential; steel; basalt and synthetic fibres; flexural strength; energy absorption.;

    Sammanfattning : Tunnels in hard and jointed rock are normally excavated in an arch shape to enable the rock mass to support its weight. Since the beginning of the 1980's, fibre reinforced shotcrete (FRS) in combination with rock bolts have been the dominating support method for hard rock tunnels. LÄS MER

  5. 4. Compositional analysis of the Andean fruit Pouteria Lucuma : a comparison of different physical forms (powder, frozen pulp and fresh pulp)

    Master-uppsats, SLU/Department of Molecular Sciences

    Författare :Elsa Ramberg; [2022]
    Nyckelord :Pouteria Lucuma; Powder; frozen pulp; fresh pulp; Total phenolic compounds; Antioxidant capacity; D-glucose; D-fructose and Sucrose.;

    Sammanfattning : Lucuma (Pouteria Lucuma), an ancient fruit from the Andes, is now increasing in popularity in the global West due to the characteristic flavour and nutritional composition (e.g. high in fibres and phenolic compounds). The shelf life of the fresh fruit is short, therefore it is mainly used as frozen pulp or powder. LÄS MER

  7. 5. Production and evaluation of enzymatically processed oat fibres as potential prebiotics

    Master-uppsats, Lunds universitet/Bioteknik (master)

    Författare :Elin Johansson; [2021]
    Nyckelord :Arabinoxylan; AXOS; L.brevis; B.adolescentis; Biotechnology; Technology and Engineering;

    Sammanfattning : Insoluble oat bran fibres, with substantial arabinoxylan (AX) content, are obtained as a byproduct from industrial processing of oat. By further processing it is possible to solubilise and hydrolyse AX into (arabino)xylo-oligosaccharides ((A)XOS). LÄS MER