Sökning: "hollow fibre"

Visar resultat 1 - 5 av 16 avhandlingar innehållade orden hollow fibre.

  1. 1. Online fibre property measurements : foundations for a method based on ultrasound attenuation

    Författare :Yvonne Aitomäki; Richard Challis; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industriell elektronik; Industrial Electronics;

    Sammanfattning : This thesis presents the foundations of a method for estimating fibre properties of pulp suitable for online application in the pulp and paper industry. In the pulp and paper industry, increased efficiency and greater paper quality control are two of the industry's main objectives. LÄS MER

  3. 2. Towards a measurement of paper pulp quality : ultrasonic spectroscopy of fibre suspensions

    Författare :Yvonne Aitomäki; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial Electronics; Industriell elektronik;

    Sammanfattning : For the paper and pulp industry in Sweden and Finland to remain competitive against countries with lower overheads, they have to constantly strive to improve the quality and the efficiency of the manufacturing processes. One of the ways of doing this is to introduce sensors that will provide valuable online feedback on the characteristics of the pulp so that adjustments can be made to optimise the manufacturing process. LÄS MER

  4. 3. Cytotoxic Cyclotides : Structure, Activity, and Mode of Action

    Författare :Erika Svangård; Per Claeson; Lars Bohlin; Ulf Göransson; John H. Cardellina II; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacognosy; cyclotide; cytotoxic; cancer; cyclic cystine knot; Viola; Violaceae; liposome; hollow fibre; homology modelling; mass spectrometry; amphipathic; structure–activity; tumour; membrane disruption; necrosis; Farmakognosi; Pharmacognosy; Farmakognosi;

    Sammanfattning : Cyclotides are small cyclic plant proteins, and this thesis addresses their cytotoxic structure-activity properties and their mode of action on human cancer cell lines. Cyclotides were isolated from Viola odorata and Viola tricolor; three novel cyclotide sequences and two known sequences, but of new origin, were identified using mass spectrometry, amino acid analysis, and Edman degradation. LÄS MER

  5. 4. A Novel Miniaturised Dynamic Hollow-Fibre Liquid-Phase Micro-Extraction Method for Xenobiotics in Human Plasma Samples

    Författare :Helena Hansson; Ulrika Nilsson; Bo Karlberg; Peter Haglund; Stockholms universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; sample clean-up; human blood plasma; hollow-fibre liquid phase microextraction; supported liquid membrane extraction; SLM; HF-LPME; sample preparation; bioanalysis; liquid-liquid extraction; Chemistry; Kemi; Analytical Chemistry; analytisk kemi;

    Sammanfattning : Bioanalytical chemistry is a challenging field, often involving complex samples, such as blood, plasma, serum or urine. In many applications, sample cleanup is the most demanding and time-consuming step. LÄS MER

  7. 5. Blood-membrane interaction and treatment of haemodialysis patients : a study of various factors

    Författare :Lennart Lundberg; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Haemodialysis; cellulose acetate; Hemophan®; cuprophan; complement activation; C3d; granulocyte elastase; ß-thromboglobulin; backdiffusion; leukocyte-removal filter; dialysate; acetate; bicarbonate; hollow- fibre dialyser; plate dialyser; transmembrane pressure;

    Sammanfattning : .... LÄS MER