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Träfflista för sökning "WFRF:(Ericsson M.) srt2:(1990-1994)"

Sökning: WFRF:(Ericsson M.) > (1990-1994)

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1.
  • Bai, Xue-Song, et al. (författare)
  • Turbulent Reacting Flow Modeling in Gas Turbine Combustors
  • 1994
  • Ingår i: Computational fluid dynamics '94: proceedings of the Second European Computational Fluid Dynamics Conference 5-8 September 1994, Stuttgart, Germany. - 0471950637 - 9780471950639 ; , s. 807-814
  • Konferensbidrag (refereegranskat)
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2.
  • Björquist, P, et al. (författare)
  • Plasminogen activator inhibitor type-1 interacts exclusively with the proteinase domain of tissue plasminogen activator.
  • 1994
  • Ingår i: Biochimica et Biophysica Acta. - 0006-3002 .- 1878-2434. ; 1209:2, s. 191-202
  • Tidskriftsartikel (refereegranskat)abstract
    • Two different techniques have been used to study the complex formation of recombinant human plasminogen activator inhibitor type-1, PAI-1, with either recombinant human two-chain tissue plasminogen activator, tc tPA (EC 3.4.21.68), or the tPA deletion variants tc K2P, containing the kringle 2 domain and the proteinase domain, and P, containing only the proteinase domain. The same value for Kon, 2.10(7) M-1s-1 for binding of PAI-1 was found for the three tPA forms by direct detection of the complex formation in real time by surface plasmon resonance, BIAcore, or indirectly by monitoring the time course of the inhibition of tPA using the chromogenic substrate N-methylsulfonyl-D-Phe-Gly-Arg-4-pNA-acetate. Apparently, no conformational change is involved in the rate-limiting step, since the kon value was found to be independent of the temperature from 20 to 35 degrees C. By the BIAcore technique, it was found that the complex between PAI-1 and tPA covalently coupled to the surface, was stable at 25 degrees C, since no dissociation was seen in buffer. However, extended treatment with 1 M NH4OH destroyed the complex with t 1/2 = 5 h. The same kon values and complex composition were found by measuring either the binding of tPA to PAI-1 captured on the monoclonal antibody MAI-11 or the binding of PAI-1 to tPA captured on the monoclonal antibody 2:2 B10. Quantification of the complex composition between PAI-1 captured on the monoclonal antibody MAI-11 with either tPA, K2P or P gave a one-to-one ratio with the fraction of active PAI-1, consistent with the results from SDS-PAGE and the specific activity of PAI-1. The complexes of the three tPA forms with PAI-1 captured on a large surface of MAI-11 dissociated more rapidly from MAI-11, with the same apparent koff, kdis, = 2.10(-3) s-1, compared with 0.7-10(-3) s-1 for the dissociation of PAI-1 alone. In consistance, the Kd, calculated from the direct determination of the kon and koff for the association of different form of PAI-1 to a small surface of MAI-11, was found to be higher for PAI-1 in complex with tPA than for free active PAI-1. Apparently, upon complex formation, a change is induced in PAI-1 at the binding epitope for MAI-11.(ABSTRACT TRUNCATED AT 400 WORDS)
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  • Hirsch, Jan M, et al. (författare)
  • Maxillary sinus augmentation using mandibular bone grafts and simultaneous installation of implants : A surgical technique
  • 1991
  • Ingår i: Clinical Oral Implants Research. - : Wiley. - 0905-7161 .- 1600-0501. ; 2:2, s. 91-96
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper presents a specific technique for maxillary sinus augmentation and simultaneous placement of implants in partially edentulous patients. In such patients, there is from time to time insufficient interarch distance for any type of onlay grafting. Health, non-smoking patients without previous or present sinus pathology, where the radiological and clinical examination revealed insufficient height and/or width of the remaining alveolar process in the posterior maxillary region, were selected. They were operated on using a mandibular bone graft obtained from the symphyseal region between the mental foramina and placed in the maxillary sinus. The recipient site was prepared by cutting in a rectangular shape the lateral sinus wall into the sinus lining. The bone wall was then separated towards the lateral nasal wall by rotating the inferior portion of the cut sinus wall medially. In the space thus created, the bone graft was placed. Fixtures were installed at the same session. The method described has proved to be uncomplicated to perform under local anesthesia and no major disadvantages for the patient or pre- or postoperative complications have so far been observed.
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  • Weis, J, et al. (författare)
  • Measurement of magnetic susceptibility and MR contrast agent concentration
  • 1994
  • Ingår i: Magnetic Resonance Imaging. - 0730-725X .- 1873-5894. ; 12:6, s. 859-864
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper describes an MR imaging method for determining magnetic susceptibility constants of solutions containing paramagnetic contrast agents. The method's validity is demonstrated on Gd(DTPA) and Dy(DTPA) water solutions. The method can be used for measurement of the volume magnetic susceptibility or concentration of contrast agents in biological tissues.
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  • Resultat 1-9 av 9

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