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Sökning: WFRF:(Bonekamp David)

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1.
  • Emdad, Reza, et al. (författare)
  • Morphometric and psychometric comparisons between non-substance-abusing patients with posttraumatic stress disorder and normal controls
  • 2006
  • Ingår i: Psychotherapy and Psychosomatics. - : S. Karger AG. - 0033-3190 .- 1423-0348. ; 75:2, s. 122-132
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Hippocampal decrease in size in response to posttraumatic stress disorder (PTSD) is still a subject of controversy. The aims of this study were to: (1) confirm previous hippocampus findings in PTSD patients compared to controls, using ethnically similar study groups where alcohol and drug abuse were non-existent; (2) test influence of disease duration as well as depression scores on possible morphological changes; (3) test whether the voxel-based morphometry (VBM) data confirm the group differences seen in the region of interest (ROI) analysis, and (4) test the associations between the cognitive test scores and the morphological changes. METHODS: VBM and ROI-based analysis were applied in 23 patients and 17 healthy controls. Culture-neutral cognitive tests were used. RESULTS: The ROI-based method showed significantly decreased gray matter volumes for global hippocampal volume, as in a separate analysis of left and right sides in the PTSD group. Total volume of the hippocampus was significantly decreased on the left side, as in the global assessment. A multiple regression VBM model showed significant voxel clusters for group affiliation in the right hippocampus, modelling lowering of gray matter associated with the PTSD group. Disease duration was shown to be negatively correlated to bilateral hippocampal volume and high depression score to bilateral gray matter parahippocampal volume. No significant correlations were found between hippocampal or parahippocampal volumes and cognitive functions. CONCLUSION: The present and previous studies showed that morphologic differences do not appear to be due to drug or alcohol abuse. The VBM data partially confirm the group differences seen in the ROI-based method in the medial temporal lobe. The fact that the significantly lower score on the short-term memory test in the PTSD group is not correlated to hippocampal volume may suggest a more general basis for such memory impairment.
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2.
  • O Reese, Matthew, et al. (författare)
  • Consensus stability testing protocols for organic photovoltaic materials and devices
  • 2011
  • Ingår i: SOLAR ENERGY MATERIALS AND SOLAR CELLS. - : Elsevier Science B.V., Amsterdam.. - 0927-0248. ; 95:5, s. 1253-1267
  • Tidskriftsartikel (refereegranskat)abstract
    • Procedures for testing organic solar cell devices and modules with respect to stability and operational lifetime are described. The descriptions represent a consensus of the discussion and conclusions reached during the first 3 years of the international summit on OPV stability (ISOS). The procedures include directions for shelf life testing, outdoor testing, laboratory weathering testing and thermal cycling testing, as well as guidelines for reporting data. These procedures are not meant to be qualification tests, but rather generally agreed test conditions and practices to allow ready comparison between laboratories and to help improving the reliability of reported values. Failure mechanisms and detailed degradation mechanisms are not covered in this report.
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