Sökning: "Pressurised fluid extraction"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Pressurised fluid extraction.

  1. 1. Pressurised Fluid Extraction of Bioactive Species in Tree Barks : Analysis using Hyphenated Electrochemical Mass Spectrometric Detection

    Författare :Michelle Co; Charlotta Turner; Per J.R Sjöberg; Kari Hartonen; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pressurised fluid extraction; antioxidants; DPPH; water; ethanol; antioxidant activity; antioxidant capacity; electrochemial detection; mass spektrometry; Chemistry; Kemi; Analytical Chemistry; Analytisk kemi;

    Sammanfattning : Analytical chemistry has developed throughout time to meet current needs. At present, the interest in biorefinery is growing, due to environmental awareness and the depletion of fossil resources. Biomass from agricultural and forestry industries has proven to be excellent raw material for different processes. LÄS MER

  3. 2. High Pressurised Fluid Extraction of Antioxidative Species from Plants

    Författare :Michelle Co; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi;

    Sammanfattning : .... LÄS MER

  4. 3. Pressurised-Fluid Extraction and Electrochemically Controlled Solid-Phase Extraction using Polypyrrole Coated Electrodes

    Författare :Gustav Liljegren; Uppsala universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  5. 4. Analysis of Degradation Products from Wood and Methods for Detoxification of Lignocellulose Hydrolysates

    Författare :Per Persson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; galactoglucomannan; mass spectrometry; liquid chromatography; sugar degradation; detoxification; fermentation inhibitors; lignocellulose hydrolysates; Ethanol production; softwood; Analytical chemistry; Analytisk kemi; countercurrent supercritical fluid extraction;

    Sammanfattning : In order to produce fuel ethanol from lignocellulose, it is necessary to hydrolyse the sugar-containing constituents hemicellulose and cellulose. During acid hydrolysis, a number of compounds are formed or liberated in addition to the fermentable monomeric sugars. LÄS MER

  7. 5. Hydro-Mechanical Behaviour of a Pressurised Single Fracture: An In-situ Experiment

    Författare :Patrik Alm; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hydro-mechanical behaviour; hydraulic field test; transmissivity; effective stress; aperture; fracture stiffness; fracture; slug test;

    Sammanfattning : Exploration of ground water resources, grouting, disposal of nuclear waste and extraction of geothermal energy are examples of activities which require consideration of the relationship between effective stress and transmissivity. However, this relationship is poorly understood and very few investigations have been conducted in field scale. LÄS MER