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Sökning: WFRF:(Larsson PL)

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  • Barbier, Christophe, 1974-, et al. (författare)
  • Experimental investigation of damage at folding of coated papers
  • 2002
  • Ingår i: Nordic Pulp & Paper Research Journal. - Sundsvall : Mittuniversitetet. - 0283-2631 .- 2000-0669. ; 17:1, s. 34-
  • Tidskriftsartikel (refereegranskat)abstract
    • To achieve a better understanding of the folding properties of coated papers pertinent to the mechanical behaviour, a microscopic investigation was performed. The influence on the damage levels in the coating from such features as delamination, humidity and paper thickness have been studied
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  • Barbier, Christophe, et al. (författare)
  • Folding of printed papers: experiments and numerical analysis
  • 2003
  • Konferensbidrag (populärvet., debatt m.m.)abstract
    • Folding of digital prints has been investigated experimentally in order to determine the influence from different features on the residual strength of the folded paper. In particular, the effect of toner-layer, paper-fibre orientation and pre-creasing is investigated and the experimental results are supplemented with numerical ones based on the finite element method. The results indicate that creasing, and to a less extend also fibre orientation, is the most important factor influencing the residual tensile strength after folding
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  • Mannervik, B, et al. (författare)
  • An evolutionary approach to the design of glutathione-linked enzymes
  • 1998
  • Ingår i: CHEMICO-BIOLOGICAL INTERACTIONS. - : ELSEVIER SCI IRELAND LTD. - 0009-2797. ; 112, s. 15-21
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Studies of protein structure provide information about principles of protein design that have come into play in natural evolution. This information can be exploited in the redesign of enzymes for novel functions. The glutathione-binding domain of glutathi
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  • Norrgren, L, et al. (författare)
  • Effects of potential xenoestrogens (DEHP, nonylphenol and PCB) on sexual differentiation in juvenile Atlantic salmon (Salmo salar)
  • 1999
  • Ingår i: Aquatic Ecosystem Health & Management. - : Michigan State University Press. - 1463-4988 .- 1539-4077. ; 2:3, s. 311-317
  • Tidskriftsartikel (refereegranskat)abstract
    • The effects of 17β-estradiol and potential xenoestrogens were investigated on Atlantic salmon (Salmo salar). Juvenile salmon fed diets containing 15 and 30 mg 17β-estradiol kg−1 food for 4 weeks after yolk-sac resorption differentiated into 88 and 100% phenotypic females, respectively. The reference group, fed uncontaminated food, consisted of 49% females. A significant overrepresentation of phenotypic females (64%) was recorded in the group fed 1500 mg di-2-ethylhexyl phthalate kg−1 food. Atlantic salmon fed diets contaminated with nonylphenol showed no differences in sex ratios compared with the control group. A significantly increased liver somatic index was detected for groups exposed to diets contaminated with 15 and 30 mg 17β-estradiol, 300 mg nonylphenol or 1500 mg di-2-ethylhexyl phthalate kg−1 food. Intraperitoneal injections of nonylphenol, di-2-ethylhexyl phthalate, or polychlorinated biphenyls 58, 104, 112 and 188 did not induce synthesis of vitellogenin which is considered to be a hallmark for estrogenic activity in in vivo testing. Therefore, in vivo assays, that is, intraperitoneal injection, can not always predict how endocrine processes in organisms are affected by pollutants.
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