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Sökning: swepub > Umeå universitet > Engelska > Övrigt vetenskapligt > (2010-2011)

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1.
  • Boman, Christoffer, et al. (författare)
  • Stove performance and emission characteristics in residential wood log and pellet combustion Part 2: Wood stove
  • 2011
  • Ingår i: Energy & Fuels. - American Chemical Society. - 0887-0624. ; 25:1
  • Tidskriftsartikel (övrigt vetenskapligt)abstract
    • The characteristics and quantities of a large number of gaseous and particulate emission components during combustion in a residential wood log stove with variations in fuel, appliance and operational conditions were determined experimentally. The measurement campaign included CO, NOx, organic gaseous carbon (OGC), volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs), total particulate matter (PMtot) as well as particle mass and number concentrations, size distributions and inorganic composition. CO varied in the range of 1100 to 7200 mg/MJfuel, while OGC varied from 210 to 3300 mg/MJfuel. Dominating VOCs were methane, followed by ethene, acetylene and benzene. Methane varied from 9 to 1600 mg/MJfuel. The non-methane volatile organic compound (NMVOC) emissions were in the range of 20-2300 mg/MJfuel. The PAHtot emissions varied from 0.8 to 220 mg/MJfuel, in most cases dominated by phenantrene, fluoranthene and pyrene. PMtot were in all cases dominated by fine particles and varied in the range 38-350 mg/MJfuel. The mass median particle diameters and the peak mobility diameters of the fine particles varied in the range 200-320 nm and 220-330 nm respectively and number concentrations in the range of 1-4×1013 particles/MJfuel. Air starved conditions, at high firing intensity, gave the highest emissions, especially for hydrocarbons. This type of conditions is seldom considered, though it may occur occasionally. The emissions from Swedish wood stoves, comparing a Swedish field study, are covered fairly well with the applied methodology, but other field studies reports considerably higher emissions especially for diluted particle sampling.
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2.
  • History of Participatory Media : Politics and Publics, 1750-2000
  • 2011
  • Samlingsverk (redaktörskap) (övrigt vetenskapligt)abstract
    • This book argues for a historical perspective on issues relating to the notion of participatory media. Working from a broad concept of media – including essays on the 19th century press, early sound media, photography, exhibitions, television and the internet – the book offers a broad empirical approach to different modes of audience participation from the mid 19th century to the present. Using the insights from the historical case studies, the book also explores some of the key concepts in discussions on the politics of participation, arguing for a theoretical perspective sensitive to the asymmetries that characterize the distribution of agency in the relationship between media and users.Scholarly discussions on participatory media now occur in several fields. This book argues that all of these discussions are all too often obscured by a rhetoric of newness, assuming that participatory media is something unique in history, radical and revolutionary. By challenging the historiography implicit in this rhetoric, the book also engages in a discussion of issues of more general relevance to the multidisciplinary field of media history.
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3.
  • Idahl, Annika, et al. (författare)
  • Chlamydia trachomatis, Mycoplasma genitalium, Neisseria gonorrhoeae, human papillomavirus, and polyomavirus are not detectable in human tissue with epithelial ovarian cancer, borderline tumor, or benign conditions
  • 2010
  • Ingår i: American Journal of Obstetrics and Gynecology. - 0002-9378. ; 202:1, s. 71.e1-71.e6
  • Tidskriftsartikel (övrigt vetenskapligt)abstract
    • OBJECTIVE: We sought to analyze the presence of the microorganisms Chlamydia trachomatis, Mycoplasma genitalium, Neisseria gonorrhoeae, human papillomavirus (HPV), and the polyomaviruses BK virus (BKV) and JC virus (JCV) in ovarian tissues of women with ovarian carcinomas, borderline tumors, and benign conditions. STUDY DESIGN: Ovarian tissue, snap-frozen and stored at -80 degrees C, from 186 women with benign conditions, borderline tumors, and epithelial ovarian cancer, as well as tissue from the contralateral ovary of 126 of these women, were analyzed regarding presence of C trachomatis and N gonorrhoeae (transcription mediated amplification), M genitalium (real-time polymerase chain reaction [PCR]), HPV (PCR), and BKV and JCV (PCR). RESULTS: All the tissue samples studied were found negative for the microorganisms analyzed. CONCLUSION: C trachomatis, M genitalium, N gonorrhoeae, HPV, and the polyomaviruses BKV and JCV are not detectable in ovarian tissues either from women with benign conditions and borderline tumors or from women with ovarian cancer.
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4.
  • Melin-Johansson, Christina, et al. (författare)
  • Significant improvement in quality of life of patients with incurable cancer after designation to a palliative homecare team
  • 2010
  • Ingår i: European Journal of Cancer Care. - 0961-5423. ; 19:2, s. 243-250
  • Tidskriftsartikel (övrigt vetenskapligt)abstract
    • The aims of this study were to describe and compare quality of life (QOL) before and after designation to a palliative homecare team (PHT) in patients with different cancer diagnoses and to identify pre-designation predictors of post-designation global QOL. We measured patients� QOL one week before designation and 11 days (median time) after with the Assessment of Quality of life at the End of Life (AQEL). Of 163 eligible patient 63 participated without attrition. Patients� QOL improved in the physical, psychological, medical and global areas. Six items significantly improved: hours recumbent during the day (p=.009), nausea (p=.008), anxiety (p=.007), getting hold of staff (p=.000), received care (p=.003) and global QOL (p=.023). Depression/low in mood (r=.55) and meaningfulness (r=.70) associated to global QOL. Furthermore, pain (p=.028) and meaningfulness (p=.028) predicted global QOL. In the existential area, it is important to further explore how meaningfulness is associated to and predicts global QOL.
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5.
6.
  • Wang, Ning, et al. (författare)
  • Selective IgA Deficiency in Autoimmune Diseases
  • 2011
  • Ingår i: Molecular medicine (Cambridge, Mass. Print). - Feinstein Institute for Medical Research. - 1076-1551. ; 17:11-12, s. 1383-1396
  • Forskningsöversikt (övrigt vetenskapligt)abstract
    • Selective immunoglobulin A deficiency (IgAD) is the most common primary immunodeficiency in Caucasians. It has previously been suggested to be associated with a variety of concomitant autoimmune diseases. In this review, we present data on the prevalence of IgAD in patients with Graves disease (GD), systemic lupus erythematosus (SLE), type 1 diabetes (T1D). celiac disease (CD), myasthenia gravis (MG) and rheumatoid arthritis (RA) on the basis of both our own recent large-scale screening results and literature data. Genetic factors are important for the development of both IgAD and various autoimmune disorders, including GD, SLE, T1D, CD, MG and RA, and a strong association with the major histocompatibility complex (MHC) region has been reported. In addition, non-MHC genes, such as interferon-induced helicase 1 (IFH1) and c-type lectin domain family 16, member A (CLEC16A), are also associated with the development of IgAD and some of the above diseases. This indicates a possible common genetic background. In this review, we present suggestive evidence for a shared genetic predisposition between these disorders.
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9.
  • Mörtberg, Christina, et al. (författare)
  • Designing for sustainable ways of living with technologies
  • 2010
  • Ingår i: Exploring digital design : multi-disciplinary design practices. - London : Springer London. - 978-1-84996-222-3 - 978-1-84996-223-0 ; s. 261-282
  • Bokkapitel (övrigt vetenskapligt)abstract
    • Digital media have placed a focus on sustainability sustainability in terms of long-term digital preservation of societal memories and cultural heritage. There is also discussion about technological issues, such as flexible infrastructures, standards and formats sustainability in digital design standards, formats, practices, which are explored in relation to how to build sustainable systems (Braa et al. 2004; Byrne 2005; Byrne and Sahay 2007). Further, while there already exists a body of knowledge about standards, classification, and category work (e.g. Star 1991; Bowker and Star 1999; Verran et al. 2007), it is also important to relate these standards, formats and routines sustainability in digital design standards, formats, practices in digital design to social sustainability in digital design social and cultural sustainability in digital design cultural sustainability, and not just durability.
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10.
  • Velaga, Sitaram P., et al. (författare)
  • Polymorphism in acesulfame sweetener structure-property and stability relationships of bending and brittle crystals
  • 2010
  • Ingår i: Chemical Communications. - Royal Society of Chemistry. - 1359-7345. ; 46:21
  • Tidskriftsartikel (övrigt vetenskapligt)abstract
    • Acesulfame is found to exist in two crystalline forms of which Form I (needles) shows bending upon mechanical stress. Crystal structures explain their mechanical response. This is the first case of aliphatic organic compounds featuring a bending phenomenon. Form I is physically more stable than Form II in ambient conditions.
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