Sökning: "low temperature degradation"

Visar resultat 1 - 5 av 191 avhandlingar innehållade orden low temperature degradation.

  1. 1. Glucose degradation products in peritoneal dialysis fluids

    Författare :Martin Erixon; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Medicine human and vertebrates ; 4-dideoxyglucosone-3-ene; 3; cytotoxicity; storage; temperature; Glucose degradation products biocompatibility; sterlization; Medicin människa och djur ; Analytical chemistry; Analytisk kemi;

    Sammanfattning : Patients suffering from renal failure must remove extracellular water and waste products from their body in order to survive. One way of doing this is by treatment with peritoneal dialysis (PD). LÄS MER

  3. 2. Rolling bearing lubrication at low temperature

    Författare :Victoria Wikström; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Sammanfattning : Problems connected with rolling bearings at low temperatures are high starting and running friction, concerns about the presence of a lubricating film and the degree of roller slip at low-temperature start-up. Also, questions have been raised whether the high shear stresses in a grease sheared at low temperature could cause thickener degradation. LÄS MER

  4. 3. Anaerobic digestion of crop residues at low temperatures

    Författare :Irene Bohn; Bioteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioteknik; Biotechnology; kontroll av utsläpp; Miljöteknik; Environmental technology; pollution control; methanogens; low temperature; crop residues; Anaerobic digestion; farm-scale digestion; fluorescence in situ hybridization;

    Sammanfattning : Biogas is a renewable source of energy. Residues from agriculture contain considerable energy potential and are suitable substrates for biogas production, but in Sweden the utilization of these residues is low. The economic feasibility of biogas production in general is low, and only limited subsidies are provided by the state. LÄS MER

  5. 4. Oxidative Degradation of Polyethylene - A Cause of Off-flavour

    Författare :Thorbjörn Andersson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; biopolymers; Polymerteknik; Polymer technology; off-flavour; degradation; polyethylene;

    Sammanfattning : Polyethylene is the most frequently used polymer material in food packaging today. The polymer is often processed by film extrusion and extrusion coating between 250°C and 325°C. LÄS MER

  7. 5. Low-Power HEMT LNAs for Quantum Computing

    Författare :Yin Zeng; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; low-noise amplifier; qubit; Cryogenic; InP HEMT.; quantum computing; low-power;

    Sammanfattning : The rapid development of quantum computing technology predicts much more qubits to handle in the detection, readout, and amplification of qubits than in today's system. Due to the limited cooling capability of the dilution refrigerator, the current low-noise amplifiers (LNAs) are in need of ten to hundred times reduced dc power consumption yet with lowest noise temperature at qubit readout frequencies, typcially 4-12 GHz. LÄS MER