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Träfflista för sökning "WFRF:(Pasternak S.) srt2:(2005-2009)"

Sökning: WFRF:(Pasternak S.) > (2005-2009)

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1.
  • Lieder, E O, et al. (författare)
  • Investigation of lifetimes in quadrupole bands of Gd-142
  • 2008
  • Ingår i: European Physical Journal A. Hadrons and Nuclei. - : Springer Science and Business Media LLC. - 1434-6001. ; 35:2, s. 135-158
  • Tidskriftsartikel (refereegranskat)abstract
    • For a level scheme investigation of Gd-142 an experiment with the gamma -spectrometer EUROBALLIII has been carried out and lifetimes have been measured with EUROBALL IV using the Doppler-shift attenuation method. The high-spin states have been populated in these experiments by means of the(99)Ru(Ti-48, 2p3n) reaction at a beam energy of 240MeV and the Sn-114(S-32, 2p2n) reaction at 160MeV, respectively. Reduced E2 transition probabilities B(E2) were determined for 15 members of four quadrupole bands. For the interpretation of the positive-parity even-spin quadrupole bands, calculations in the cranked Nilsson-Strutinsky as well as interacting boson models have been performed. From the former calculations it was concluded that the high-spin states of the (+ , 0)(1) band in Gd-142 represent a triaxial nucleus rotating around the longest principal axis.
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2.
  • Lieder, E. O., et al. (författare)
  • DSAM Lifetime Studies for Gd-Nd nuclei with EUROBALL and AFRODITE
  • 2008
  • Ingår i: Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 2007. - : AIP. - 1551-7616 .- 0094-243X. - 9780735405325 ; 1012, s. 383-385
  • Konferensbidrag (refereegranskat)abstract
    • Lifetimes of high-spin states have been measured for 142Gd and 134Nd with EU-ROBALL IV and AFRODITE, respectively, using DSAM. From calculations in the cranked Nilsson-Strutinsky model it was concluded that at the high-spin states of the (+,0)1 band, 142Gd represents a triaxial nucleus rotating around the longest principal axis.
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3.
  • Pasternak, Björn, et al. (författare)
  • Doxycycline-coated sutures improve mechanical strength of intestinal anastomoses.
  • 2008
  • Ingår i: International journal of colorectal disease. - : Springer Science and Business Media LLC. - 0179-1958 .- 1432-1262. ; 23:3, s. 271-6
  • Forskningsöversikt (refereegranskat)abstract
    • BACKGROUND AND AIMS: After resection and repair of the intestines, tissue degradation leads to weakening of the repair site and risk of postoperative leakage. Matrix metalloproteinases (MMPs) are thought to be responsible for collagenolysis in the direct vicinity of surgical sutures in many tissues. Several experimental studies show that MMP inhibitors administered systemically alleviate postoperative weakening of intestinal anastomoses. We hypothesised that local delivery of MMP inhibitors would achieve a similar effect. MATERIALS AND METHODS: Implementing a novel method for the coating of biomaterials, we coated sutures with a cross-linked fibrinogen film and bound the MMP inhibitor doxycycline into this film. The sutures were then used in a standard rat model for evaluating mechanical properties of colonic anastomoses 3 days after surgery. RESULTS: The breaking strength of the anastomoses on the critical third day after operation was 17% higher with doxycycline-coated sutures compared to controls (P = 0.026). Energy uptake at failure was enhanced by 20% (P = 0.047). CONCLUSION: Drug delivery by means of MMP-inhibitor-coated sutures appears to improve tissue integrity during anastomotic repair and may reduce postoperative complications.
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