Search for dissertations about: "Erik Johansson"

Showing result 1 - 5 of 109 swedish dissertations containing the words Erik Johansson.

  1. 1. Optics of coated paperboard : Aspects of surface treatment on porous structures

    Author : Erik Bohlin; Caisa Johansson; Magnus Lestelius; Per Edström; Per-Åke Johansson; Karlstads universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Chemical Engineering; Kemiteknik;

    Abstract : Calendering of coated and uncoated paper is widely used to enhance optical properties such as gloss and print quality. The aim of this thesis is to characterize coatings and prints, and to validate models using experimental results from optical measurements of physical samples. Calendering of coated paper often leads to a brightness decrease. READ MORE

  2. 2. Free radical mediated cellulose degradation during high-consistency ozone conditions : reaction patterns in fibers and free radical chemistryd Erik E. Johansson

    Author : Erik E. Johansson; KTH; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Chemistry; Kemi;

    Abstract : .... READ MORE

  3. 3. Improving the understanding of cloud radiative heating

    Author : Erik Johansson; Abhay Devasthale; Michael Tjernström; Annica M. L. Ekman; Robert Pincus; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; clouds; radiative effects; upper troposphere-lower stratosphere; atmospheric circulation; remote sensing; Atmospheric Sciences and Oceanography; atmosfärvetenskap och oceanografi;

    Abstract : Clouds play an essential role in regulating Earth’s radiation budget by reflecting and absorbing energy at different spectra. As they interact with radiation, they can radiatively heat or cool the adjacent atmosphere and the surface. READ MORE

  4. 4. The knowledge problem of public transport policy

    Author : Erik Johansson; Trafik och väg; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Public transport; Planning; Appraisal; Evaluation; Public transport; Planning; Appraisal; Evaluation;

    Abstract : The overall aim of the thesis is to investigate the knowledge problem in regional public transport planning. The knowledge problem is twofold. How do transport policy arrive at the desirable actions they take and how do they assess the alternatives, and what can we say about the contributions of already implemented transport schemes. READ MORE

  5. 5. Computed tomography of sawlogs : knot detection and sawing optimization

    Author : Erik Johansson; Luleå tekniska universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Träteknik; Wood Technology;

    Abstract : Branches on trees introduce defects on sawn timber called knots. By scanning sawlogs using computed tomography, knots can be detected and accounted for so that the sawing process can be optimized with respect to outgoing product value. READ MORE