Search for dissertations about: "wood quality"

Showing result 11 - 15 of 208 swedish dissertations containing the words wood quality.

  2. 11. Wood fingerprint recognition and detection of thin cracks

    Author : Tobias Pahlberg; Olle Hagman; Matthew Thurley; Michael Felsberg; Luleå tekniska universitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Träteknik; Wood Science and Engineering;

    Abstract : The first part of this thesis deals with recognition of wood fingerprints extracted from timber surfaces. It presents different methods to track sawn wood products through an industrial process using cameras. READ MORE

  4. 12. Quantitative genetics of lodgepole pine (Pinus contorta) wood quality traits in Sweden

    Author : Haleh Hayatgheibi; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Stem bending, breakage, and general instability of lodgepole pine has been a major problem in northern Sweden due to low stem stiffness. The overall aim of this thesis was to evaluate the potential incorporation of wood quality traits into lodgepole pine advanced breeding programs. READ MORE

  5. 13. Machining of wood : cutting data and its effect on the work environment and surface quality

    Author : Jan Palmqvist; Linköpings universitet; []
    Keywords : ;

    Abstract : Machining using circular tools is very frequent in the wood manufacturing industry. Such machinery is very efficient but also leads to problems, for example in the indoor factory environment, in the form of unhealthy wood dust emissions. Another example is imperfections in wood products such as unacceptable surface quality. READ MORE

  6. 14. Phenolic Antioxidants in Wood Smoke

    Author : Jennica Kjällstrand; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; smoke; benzene; methoxyphenols; antioxidants; wood; lignin; combustion; biomass;

    Abstract : Smoke from residential wood burning constitutes a complex mixture of organic compounds with varying environmental and health effects. This thesis focuses on antioxidants and aromatic hydrocarbons emitted from small-scale burning. READ MORE

  7. 15. Impact of residential wood combustion on urban air quality

    Author : Patricia Krecl; Christer Johansson; Johan Ström; Tami Bond; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; residential wood combustion; air quality; aerosols; black carbon; polycyclic aromatic hydrocarbons; particulate matter; particle size distributions; source apportionment; positive matrix factorization; compound-specific radiocarbon analysis; Earth sciences; Geovetenskap; Applied Environmental Science; tillämpad miljövetenskap;

    Abstract : Wood combustion is mainly used in cold regions as a primary or supplemental space heating source in residential areas. In several industrialized countries, there is a renewed interest in residential wood combustion (RWC) as an alternative to fossil fuel and nuclear power consumption. READ MORE