SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Fredriksson M. K.) srt2:(2000-2004)"

Sökning: WFRF:(Fredriksson M. K.) > (2000-2004)

  • Resultat 1-10 av 16
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Ottosen, Niels Saabye, et al. (författare)
  • Efficient 4-node quadrilateral
  • 2004
  • Ingår i: Computational Mechanics - Theory and Practice. ; , s. 108-119
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
  •  
2.
  •  
3.
  •  
4.
  •  
5.
  •  
6.
  •  
7.
  •  
8.
  •  
9.
  • Hansson, K., et al. (författare)
  • Hot ductility of an Fe-10%Ni alloy during penetration of copper
  • 2002
  • Ingår i: Scandinavian journal of metallurgy. - : Wiley. - 0371-0459 .- 1600-0692. ; 31:4, s. 256-267
  • Tidskriftsartikel (refereegranskat)abstract
    • Today's available theories for hot crack formation are based on the fact that hot cracks are formed in the presence of liquid films in the interdendritic areas or at the grain boundaries, which are exposed to tensile stress. Copper is well known to cause hot shortness in steels. In order to study how the liquid embrittles the material, high-temperature tensile tests were performed at two strain rates during the penetration of liquid copper into Fe-10%Ni. The penetration distance was measured in samples that were exposed to strain without fracturing. The ductility (area reduction), strain and ultimate tensile stress were determined. Microprobe analysis was performed on the fractured samples. The transition temperature of ductility was found at 1400-1450degreesC without copper penetration whereas it occurred at 1025-1078degreesC during the penetration of copper, i.e. copper starts to embrittle at a temperature below its melting point. The microprobe measurements showed that the diffusion rate of copper into Fe-10%Ni was enhanced when the lattice was strained. The results are discussed in terms of a new theory concerning vacancy formation and condensation as the dominating mechanism for hot crack formation during solidification.
  •  
10.
  • Lagerström, Malin C., et al. (författare)
  • High affinity agonistic metal ion binding sites within the melanocortin 4 receptor illustrate conformational change of transmembrane region 3
  • 2003
  • Ingår i: Journal of Biological Chemistry. - : American Society for Biochemistry and Molecular Biology. - 0021-9258 .- 1083-351X. ; 278:51, s. 51521-51526
  • Tidskriftsartikel (refereegranskat)abstract
    • We created a molecular model of the human melanocortin 4 receptor (MC4R) and introduced a series of His residues into the receptor protein to form metal ion binding sites. We were able to insert micromolar affinity binding sites for zinc between transmembrane region (TM) 2 and TM3 where the metal ion alone was able to activate this peptide binding G-protein-coupled receptor. The exact conformation of the metal ion interactions allowed us to predict the orientation of the helices, and remodeling of the receptor protein indicated that Glu100 and Ile104 in TM2 and Asp122 and Ile125 in TM3 are directed toward a putative area of activation of the receptor. The molecular model suggests that a rotation of TM3 may be important for activation of the MC4R. Previous models of G-protein-coupled receptors have suggested that unlocking of a stabilizing interaction between the DRY motif, in the cytosolic part of TM3, and TM6 is important for the activation process. We suggest that this unlocking process may be facilitated through creation of a new interaction between TM3 and TM2 in the MC4R.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-10 av 16

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy