Sökning: "TMP"

Visar resultat 21 - 25 av 58 avhandlingar innehållade ordet TMP.

  1. 21. Improved energy efficiency in double disc chip refining

    Författare :Dino Muhic; Per Engstrand; Lars Sundström; Mats Ullmar; Christer Sandberg; Hans Höglund; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; thermomechanical pulping TMP ; double disc refining; high intensity; Chemical engineering; Kemiteknik;

    Sammanfattning : The electrical energy consumption in thermomechanical pulping (TMP) is very high, in the range of 2 – 3 MWh/adt depending on process solution and on the product quality specifications for the paper product. Both pulpwood and energy prices have increased rapidly for some time. LÄS MER

  3. 22. The influence of fibre characteristics on bulk and strength properties of TMP and CTMP from spruce

    Författare :Niklas Klinga; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; Kemiteknik;

    Sammanfattning : This thesis is intended to contribute to an increased knowledge about the influence of fibre characteristics on bulk and strength properties of thermomechanical pulp (TMP) and chemithermomechanical pulp (CTMP) from spruce. It deals with laboratory sheet properties and how they are affected by the conditions during pressing and drying, e.g. LÄS MER

  4. 23. En föreningsbaserad demokrati? : Ideella föreningar och valdeltagande i Sveriges kommuner under 1990-talet

    Författare :Susanne Lundåsen; Dag Ancka; (Sibeliusmuseet) Åbo Åbo Akademi Institutionen för statskunskap; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; socialt kapital; valdeltagande; civilsamhälle; modernisering; Political science; Statsvetenskap;

    Sammanfattning : Föreliggande avhandling har syftet att testa det sociala kapitalets betydelse för valdeltagandet. Utgångspunkten för studien är främst att testa huruvida storleken på föreningslivet har betydelse för valdeltagandet och huruvida inflytandet från föreningslivet varierar med den socioekonomiska utvecklingsnivån. LÄS MER

  5. 24. A toolbox for improving the processability of composites with a high content of thermomechanical pulp

    Författare :Seyedehsan Hosseini; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; interface.; thermomechanical pulp; magnesium stearate; mechanical properties; composite; molybdenum disulfide; AKD;

    Sammanfattning : The use of oil-based products causes large volumes of non-biodegradable waste and contributes to climate changes. Focus has consequently shifted towards the use of polymers derived from wood. The processability of such polymers, however, presents a challenge but this can be overcome through the use of composite materials, i.e. LÄS MER

  7. 25. Microbial and enzymatic syntheses of polymer building blocks through selective transformations of polyols and furans

    Författare :Mahmoud Sayed Ali Sayed; Bioteknik; []
    Nyckelord :Mycobacterium sp. MS1601; G. oxydans; oxidase; lipase; trimethylolpropane TMP ; 2; 2- bis hydroxymethyl butyric acid BHMB ; 5-hydroxymethyl furfural 5-HMF ; 5-hydroxymethyl-2-furan carboxylic acid HMFCA ; 2; 5-furandicarboxylic acid FDCA ; cyclic carbonate ; estrification; Biotransformation; polymer building blocks; product recovery; selective oxidation; bioprocess engneering; cell recycling; cell bleeding; DNA recombinant technology; in-silico analysis;

    Sammanfattning : AbstractTransition from fossil- to bio-based economy is a critical step towards reduction of greenhouse gas emissions and climate change, and hence for achievement of sustainable communities and environment. In order to be fossil-free, the chemical and material industry is in need of carbon-neutral building blocks from renewable resources for the diverse array of products that are currently produced from olefins and aromatics. LÄS MER