Sökning: "fine paper"

Visar resultat 1 - 5 av 224 avhandlingar innehållade orden fine paper.

  1. 1. Beam-to-Beam Contact and Its Application to Micromechanical Simulation of Fiber Networks

    Författare :Hamid Reza Motamedian; Artem Kulachenko; Umberto Perego; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fiber network; beam-to-beam contact; rotational contact; non-consistent; simulation; finite element; multiscale; microscale; micromechanics; paper; refining; beating; fine; hygroexpansion; shrinkage; drying; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : This doctoral thesis covers the topic of modeling the three-dimensional fiber net- works with the finite element method. It contains the part addressing the numerical aspects of the modeling, namely, the contact formulation and application of the developed methods to the fundamental questions such as the effect of randomness in fiber properties and effect of fines and hygroexpansion. LÄS MER

  3. 2. Responsibility and health: explanation-based perspectives

    Författare :Karl Persson de Fine Licht; Göteborgs universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; responsibility; health; explanations; the explanation hypothesis; explanatory perspectives; priority-setting; health care; bariatric surgery;

    Sammanfattning : There is a growing trend of holding people responsible for their lifestyle-based diseases. For example, policymakers as well as researchers have argued that medical conditions caused by smoking, overweight, or extreme sports should be given lower priority in publicly funded healthcare. LÄS MER

  4. 3. Improvement of the retention-fromation relationship using three-component retention aid systems

    Författare :Anna Svedberg; Lars Wågberg; Janne Laine; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dewatering; drag reduction; fibre flocculation; filler retention; fine paper; flow imaging; flow loop; formation aid; kraft pulp; magnetic resonance imaging; MRI; paper formation; pilot web former; pressure drop; retention aid; turbulence damping;

    Sammanfattning : .... LÄS MER

  5. 4. Valuation of retention/formation relationships using a laboratory piot-paper machine

    Författare :Anna Svedberg; Lars Wågberg; Mikael Lindström; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cellulose and paper engineering; Cellulosa- och pappersteknik;

    Sammanfattning : The interdependency between filler retention and paper formation is well-known, where a high retention is accompanied by impaired formation. A challenge for today’s papermakers is to increase the competitiveness for uncoated and coated fine paper, by improving the formation at the same level of retention. LÄS MER

  7. 5. Energy Export Opportunities from Kraft Pulp and Paper Mills and Resulting Reductions in Global CO2 Emissions

    Författare :Erik Marcus Kristian Axelsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy export; Heat integration; Energy savings; Kraft pulp and paper mill; Global CO2 emissions;

    Sammanfattning : With increasing energy prices and increasing demand for CO2-lean energy sources, energy savings in the pulp and paper industry become ever more relevant. Significant energy savings in kraft mills can be made by e.g. improved heat integration and installation of an energy-efficient evaporation plant. LÄS MER