Sökning: "polyethylene glycol PEG"

Visar resultat 21 - 25 av 54 avhandlingar innehållade orden polyethylene glycol PEG.

  1. 21. Mechanical Properties and Deformation Behaviour of Polymer Materials during Nanosectioning : Characterisation and Modelling

    Författare :Fengzhen Sun; Kristofer Gamstedt; Kai Cheng; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nanosectioning; Fracture toughness; Adiabatic shearing; Shear band; Nanosectioning; Glassy polymer; Nanocomposite;

    Sammanfattning : Research in local fracture processes and micro-machining of polymers and polymer-based composites has attracted increasing attention, in development of composite materials and miniaturisation of polymer components. In this thesis, sectioning (machining) of a glassy polymer and a carbon nanotube based composite at the nanoscale was performed by an instrumented ultramicrotome. LÄS MER

  3. 22. Mobilized Thermal Energy Storage for Heat Recovery for Distributed Heating

    Författare :Weilong Wang; Jinyue Yan; Erik Dahlquist; Jenny Holgersson; Hongxing Yang; Björn Karlsson; Mats Westermark; Louise Trygg; Mälardalens högskola; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP; Energy- and Environmental Engineering; energi- och miljöteknik;

    Sammanfattning : Conventional energy sources—oil and electricity—dominate the heat supply market. Due to their rising costs and their negative environmental effects on global climate change, it is necessary to develop an alternative heat supply system featuring low cost, high energy efficiency and environment friendliness. LÄS MER

  4. 23. Hydrogen Bonding in Liquid Alcohols

    Författare :Per Sillrén; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Hydrogen Bonded Liquids; Physics of liquids; Diffraction; Monte Carlo Simulation; Alcohols; Neutron Scattering; EPSR;

    Sammanfattning : Hydrogen bonded (H-bonded) materials, such as water, alcohols, sugars, and even DNA, are extremely important for biology, as well as chemical industry. Alcohols are used as solvents in paints, in perfumes, as cleaners, anti-freezers, or as an alternative to petrol in combustion engines. LÄS MER

  5. 24. Carbon nanotubes in nanomedicine

    Författare :Ramy El-Sayed; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The development of nanomedicine is based primarily on the development of smart and multifunctional nanomaterials that can serve under the different clusters including drug delivery systems, diagnostics, and regenerative medicine. Recently, carbon nanotubes (CNTs) have received enormous attention due to their extraordinary properties. LÄS MER

  7. 25. Implication of chemical deterioration on mechanical performance of wood

    Författare :Shahin Norbakhsh; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : The oak wood of the 17th century warship Vasa has shown significant changes in the chemical and mechanical properties as compared to recent oak. The most important factors contributing to these changes are the incorporation of iron compounds during waterlogging and the uptake of polyethylene glycol (PEG) in the course of the preservation treatment. LÄS MER