Sökning: "formaldehyde"

Visar resultat 1 - 5 av 114 avhandlingar innehållade ordet formaldehyde.

  1. 1. Contact allergy to formaldehyde. Diagnosis and clinical relevance

    Författare :Inese Dubnika Hauksson; Yrkes- och miljödermatologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Allergic contact dermatitis; preservatives; formaldehyde; formaldehyde releasers; patch testing; repeated open application test; baseline series;

    Sammanfattning : Preservatives are biologically active substances mainly used in water-based products to prevent the growth of microorganisms. Most people are exposed to them on a daily basis. Formaldehyde is one of the oldest and most commonly used preservatives. However, it is a well-known contact sensitiser in dermatitis patients. LÄS MER

  3. 2. Mechanical Analysis of Melamine-Formaldehyde Composites

    Författare :Per-Ola Hagstrand; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; melamine-formaldehyde; damage; composites; alumina trihydrate; stiffness modelling; cyclic loading; rheokinetics; flax fibres; in-situ SEM;

    Sammanfattning : Planar random fibre composite materials based on melamine-formaldehyde (MF), one of the hardest and stiffest isotropic polymers that is known, have been developed recently on an industrial scale. In this thesis the mechanical behaviour of these materials is systematically investigated for the first time. LÄS MER

  4. 3. New melamine-formaldehyde composites

    Författare :Björn Voigt; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; carbon fibres; strength; composite; stiffness; melamine-formalehyde; microcracking;

    Sammanfattning : .... LÄS MER

  5. 4. Kraft lignin in phenol formaldehyde resin

    Författare :Birgitta Danielson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phenol formaldehyde resin; lignin phenol based adhesives; plywood manufacturing; kraft lignin; adhesives;

    Sammanfattning : .... LÄS MER

  7. 5. Optical remote sensing of industrial gas emission fluxes

    Författare :John Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; optical remote sensing; DOAS; gas emission; absorption spectroscopy; VOC; flux measurement; solar occultation; FTIR; formaldehyde;

    Sammanfattning : Mobile optical remote sensing techniques offer promising possibilities to quantify and geographically attribute local industrial gaseous emissions to the atmosphere. Studies have repeatedly shown that such emissions are often poorly understood, underestimated, and thereby not properly accounted for in emission inventories and regional atmospheric chemistry models, especially for emissions of VOCs. LÄS MER