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Träfflista för sökning "WFRF:(von Wendt G) srt2:(2005-2009)"

Sökning: WFRF:(von Wendt G) > (2005-2009)

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1.
  • Achterberg, A., et al. (författare)
  • The search for muon neutrinos from northern hemisphere gamma-ray bursts with AMANDA
  • 2008
  • Ingår i: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 674:1, s. 357-370
  • Tidskriftsartikel (refereegranskat)abstract
    • We present the results of the analysis of neutrino observations by the Antarctic Muon and Neutrino Detector Array (AMANDA) correlated with photon observations of more than 400 gamma-ray bursts (GRBs) in the northern hemisphere from 1997 to 2003. During this time period, AMANDA's effective collection area for muon neutrinos was larger than that of any other existing detector. After the application of various selection criteria to our data, we expect similar to 1 neutrino event and <2 background events. Based on our observations of zero events during and immediately prior to the GRBs in the data set, we set the most stringent upper limit on muon neutrino emission correlated with GRBs. Assuming a Waxman-Bahcall spectrum and incorporating all systematic uncertainties, our flux upper limit has a normalization at 1 PeV of E-2 Phi(nu) <= 6.3 x 10(-9) GeV cm(-2) s(-1) sr(-1), with 90% of the events expected within the energy range of similar to 10 TeV to similar to 3 PeV. The impact of this limit on several theoretical models of GRBs is discussed, as well as the future potential for detection of GRBs by next-generation neutrino telescopes. Finally, we briefly describe several modifications to this analysis in order to apply it to other types of transient point sources.
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2.
  • Horneman, G., et al. (författare)
  • Health-related quality of life of adolescents and young adults 10 years after serious traumatic brain injury
  • 2005
  • Ingår i: International Journal of Rehabilitation Research. - : Ovid Technologies (Wolters Kluwer Health). - 0342-5282 .- 1473-5660. ; 28:3, s. 245-9
  • Tidskriftsartikel (refereegranskat)abstract
    • The aim of this study was to investigate health-related quality of life (HRQoL) in a population-based group of young adults with serious traumatic brain injury (TBI) acquired 10 years earlier. In the time period 1987--1991, all 165 residents (<18 years of age) in the south-western health care region of Sweden who had suffered a serious TBI were followed up. Of these, 109 (67%) participated in this follow-up study, which was conducted using the 15-dimension (15D) HRQoL instrument. Their HRQoL was compared with that of 1,039 individuals drawn randomly from the National Population Register for the Finnish Health Care Survey 1995/1996 and matched for age and sex. Nine (mobility, vision, hearing, eating, speech, mental status, depression, distress and usual activities) of the 15 dimensions were significantly aberrant in the TBI group. This TBI group differed markedly from children with organ transplantation, as the transplantation children did not differ from a control group in terms of HRQoL. Compared with other groups of children with congenital or long-lasting conditions, the TBI group had more medical and mental problems.
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3.
  • Nilsson, M, et al. (författare)
  • Early detection of macular changes in patients with diabetes using Rarebit Fovea Test and optical coherence tomography
  • 2007
  • Ingår i: British Journal of Ophthalmology. - : BMJ. - 0007-1161 .- 1468-2079. ; 91:12, s. 1596-1598
  • Tidskriftsartikel (refereegranskat)abstract
    • AIM: To evaluate central retinal thickness and foveal function using optical coherence tomography (OCT) and the Rarebit Fovea Test (RFT) in patients with diabetes without previously known retinopathy or maculopathy. METHOD: Forty-two patients with diabetes mellitus (DM) were selected from the screening records at St Erik Eye Hospital. Inclusion criteria were absence of macular or other retinal changes at previous screening examination and best corrected visual acuity >/=1.0. These patients and 42 healthy controls were examined with the recently developed RFT, and retinal thickness was measured using OCT. Lens thickness and light scatter were evaluated by Scheimpflug photography. RESULTS: Significantly more DM subjects (12/42) had a subnormal RFT result compared with the controls (2/42) (p = 0.007). None of the 12 DM subjects had maculopathy, one had mild non proliferative diabetic retinopathy, and five had minimal non-proliferative diabetic retinopathy. The retinal thickness in the pericentral zone was significantly (p<0.05) thinner in DM patients with subnormal RFT compared with the controls. CONCLUSION: Decreased RT and subnormal RFT results were found in a subgroup of diabetes patients, despite normal screening results. Prospective studies are under way to evaluate the prognostic implications.
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