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Sökning: swepub > Umeå universitet > Tidskriftsartikel > (1995-1999) > (1998)

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  • Ahlm, Clas, et al. (författare)
  • Prevalence of antibodies specific to Puumala virus among farmers in Sweden
  • 1998
  • Ingår i: Scandinavian Journal of Work, Environment and Health. - 0355-3140. ; 24:2, s. 104-108
  • Tidskriftsartikel (refereegranskat)abstract
    • Serological evidence confirmed that the exposure of humans to Puumala virus is firmly restricted to the northern and central parts of Sweden. In addition the evidence indicated that, in this region, farming is associated with an increased risk of contracting hantavirus infection.
  • Blackburn, N., et al. (författare)
  • Rapid determination of bacterial abundance, biovolume, morphology, and growth by neural network-based image analysis
  • 1998
  • Ingår i: Applied and Environmental Microbiology. - American Society for Microbiology. - 0099-2240. ; 64:9, s. 3246-3255
  • Tidskriftsartikel (refereegranskat)abstract
    • Annual bacterial plankton dynamics at several depths and locations in the Baltic Sea were studied by image analysis. Individual bacteria were classified by using an artificial neural network which also effectively identified nonbacterial objects, Cell counts and frequencies of dividing cells were determined, and the data obtained agreed well with visual observations and previously published values. Cell volumes were measured accurately by comparison with bead standards. The survey included 690 images from a total of 138 samples. Each image contained approximately 200 bacteria. The images were analyzed automatically at a rate of 100 images per h, Bacterial abundance exhibited coherent patterns with time and depth, and there were distinct subsurface peaks in the summer months. Four distinct morphological classes were resolved by the image analyzer, and the dynamics of each could be visualized. The bacterial growth rates estimated from frequencies of dividing cells were different from the bacterial growth rates estimated by the thymidine incorporation method. With minor modifications, the image analysis technique described here can be used to analyze other planktonic classes.
  • Brändström, Sven, et al. (författare)
  • Swedish normative data on personality using the Temperament and Character Inventory
  • 1998
  • Ingår i: Comprehensive Psychiatry. - 0010-440X. ; 39:3, s. 122-128
  • Tidskriftsartikel (refereegranskat)abstract
    • The Temperament and Character Inventory (TCI) is a self-report personality questionnaire based on Cloninger's psychobiological model of personality, which accounts for both normal and abnormal variation in the two major components of personality, temperament and character. Normative data for the Swedish TCI based on a representative Swedish sample of 1,300 adults are presented, and the psychometric properties of the questionnaire are discussed. The structure of the Swedish version replicates the American version well for the means, distribution of scores, and relationships within the between scales and subscales. Further, the Swedish inventory had a reliable factor structure and test-retest performance. The results of this study confirm the theory of temperament and character as a seven-factor model of personality.
  • Hellzen, Ove, et al. (författare)
  • From optimism to pessimism : A case study of a psychiatric patient
  • 1998
  • Ingår i: Journal of Clinical Nursing. - 0962-1067. ; 7:4, s. 360-370
  • Tidskriftsartikel (refereegranskat)abstract
    • This article focuses on the results of a single case study which illuminates an understanding of phases in nursing care for a patient in a psychiatric setting in Sweden. The focus of this study is a fifty year old man who showed progressive deterioration from increased motor activity to oral, sexual, destructive and aggressive actions. The data collection using five methods occurred during a 21 months period. Results of the content analyses processes identified four distinct but indiscreet phases of the patient’s complex condition. The medical and nursing care was categorised in three approaches: optimistic, strategic and resigned. The results raise the question whether there is action that is without any meaning as an expression of the patient´s wishes, thoughts and feelings. It seems clear that the patient in this study felt really angry and in despair. However, during moments of lucidity, he also indicated that he felt this was not an authentic expression of his "real" self. His experience was that of a splintered world.
  • Norrback, Karl-Fredrik, et al. (författare)
  • Telomerase activity in Hodgkin's disease
  • 1998
  • Ingår i: Blood. - 0006-4971. ; 92:2, s. 567-573
  • Tidskriftsartikel (refereegranskat)abstract
    • Telomere maintenance executed by the action of telomerase seems to be a prerequisite for immortalization. Telomerase is found in most cell lines and malignant tumors. A telomerase-independent mechanism for telomere maintenance in Hodgkin's disease has been proposed in the absence of detectable telomerase activity. In this study, telomerase activity was detected in 31 of 77 Hodgkin's disease samples and a strong correlation between eosinophilia and absence of detectable telomerase activity was found. Purified eosinophils and specifically eosinophil-derived neurotoxin and eosinophilic cationic protein, both ribonucleases, were found to degrade telomerase. Purified neutrophils also exhibited weak telomerase degradative activity. Reanalysis of previously telomerase-negative Hodgkin's disease samples with eosinophilia using ribonuclease inhibitors resulted in the detection of telomerase activity. Ribonuclease-containing cells in vivo thus have a considerable impact on the detectability of telomerase. In Hodgkin's disease samples without eosinophilia, 24 of 27 exhibited telomerase activity at decreased levels compared with non-Hodgkin's lymphomas and at increased levels compared with reactive nodes indicative of a telomerase positive tumor component in Hodgkin's disease. Telomerase positivity of the Hodgkin's and Reed-Sternberg cells in vivo was also supported by high levels of telomerase expression in Hodgkin's disease cell lines. Based on our data, Hodgkin's lymphomas are potential targets for antitelomerase therapy.
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