| 1. |
- Svensson, Lars-Håkan, et al.
(författare)
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Aischylos, Myrmidonerna.
- 2023
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Ingår i: Myrmidonerna : fragment i översättning och med kommentarer av Jan Stolpe och Lars Håkan Svensson - fragment i översättning och med kommentarer av Jan Stolpe och Lars Håkan Svensson. - 9789198576313
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Bokkapitel (populärvet., debatt m.m.)
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| 2. |
- Ahrné, Karin, et al.
(författare)
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Tillstånd och trender för arter och deras livsmiljöer – rödlistade arter i Sverige 2015
- 2015
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- 2015 års upplaga av den svenska rödlistan är den fjärde i ordningen. Den är baserad på IUCN:s rödlistningskriterier och revideras vart femte år. I rödlistan bedöms risken som enskilda arter av djur, växter och svampar löper att försvinna från Sverige. Bedömningen utförs av ArtDatabankens medarbetare i samverkan med över 100 externa experter, indelade i 14 expertkommittéer för olika organismgrupper. Under arbetet med 2015 års rödlista har tillstånd och trender bedömts för 21 600 arter och 1 318 lägre taxa (apomiktiska arter, underarter och varieteter), sammanlagt ca 22 900 taxa. Av de bedömda arterna klassificerades 2 029 som hotade (kategorierna CR, EN och VU) och 4 273 som rödlistade (inkluderar även kategorierna NT, RE och DD). Förhållandet mellan antalet rödlistade och antalet bedömda arter ar 19,8 %, vilket är ungefär samma värde som 2010 och 2005. I denna rapport jämförs antalet och andelen rödlistade arter mellan olika organismgrupper, biotoper, substrat och påverkansfaktorer. Texten ar indelad i en allmän del och åtta kapitel inriktade på olika landskapstyper. Landskapstyperna utgör en grov indelning av landets miljöer enligt följande kategorier: Skog, Jordbrukslandskap, Urbana miljöer, Fjäll, Våtmarker, Sötvatten, Havsstränder och Havsmiljöer. Skogen och jordbrukslandskapet är de artrikaste landskapstyperna med 1 800 respektive 1 400 arter som har en stark anknytning dit, och ytterligare flera hundra arter som förekommer där mer sporadiskt. De faktorer som påverkar flest rödlistade arter i Sverige är skogsavverkning och igenväxning, som båda utgör ett hot mot vardera ca 30 % av de rödlistade arterna. Avverkning minskar arealen av skog där naturliga strukturer och naturlig dynamik upprätthålls, och den orsakar därmed förlust av livsmiljöer. Igenväxning orsakas av ett antal faktorer, bland annat upphörande hävd (bete och slåtter), gödsling, trädplantering och brist på naturliga störningsregimer som t.ex. regelbundna översvämningar kring vattendrag och sjöar. Andra viktiga påverkansfaktorer är fiske, torrläggning av våtmarker, tillbakagång hos värdarter (främst alm och ask som drabbats av invasiva svampsjukdomar), klimatförändringar och konkurrens från invasiva arter. IUCN:s rödlisteindex beräknas för ett urval av de bedömda organismgrupperna. Rödlisteindex visar att skillnaderna mellan rödlistorna från 2000, 2005, 2010 och 2015 är små. Ett par undantag finns dock. Groddjur och stora däggdjur har fått en något förbättrad situation sedan 2000. Totalt förefaller det ändå som att trycket mot Sveriges artstock har förblivit relativt konstant under de senaste 15 åren.
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| 3. |
- Brorson, Håkan, et al.
(författare)
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Controlled compression and liposuction treatment for lower extremity lymphedema.
- 2008
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Ingår i: Lymphology. - 0024-7766. ; 41:2, s. 52-63
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Tidskriftsartikel (refereegranskat)abstract
- In 1987 we noticed excess adipose tissue in a patient with arm lymphedema and later, objective studies confirmed this clinical finding in patients with non-pitting arm lymphedema following breast cancer. A prospective study was begun in 1993, and its long-term results (15 years) shows overall complete reduction of the excess volume in patients with non-pitting arm lymphedema and that adipose tissue dominates the excess volume. Encouraged by these results we operated on a patient with primary and secondary elephantiasis of the leg. The edema was first transferred from a pitting to a non-pitting state by controlled compression therapy. Then liposuction was performed to remove the remaining excess adipose tissue, and complete reduction was finally achieved. The patient wears compression garments continuously and during the 11 years of followup, no recurrence has occurred. This paper explains our philosophical approach: a pitting lymphedema first should be treated conservatively to remove excess fluid, then liposuction can be performed to remove remaining excess volume bothersome to the patient.
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| 4. |
- Brorson, Håkan, et al.
(författare)
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Suction-assisted lipectomy
- 2015
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Ingår i: Lymphedema : Presentation, Diagnosis, and Treatment - Presentation, Diagnosis, and Treatment. - Cham : Springer International Publishing. - 9783319144924 - 9783319144931 ; , s. 313-324
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Bokkapitel (refereegranskat)abstract
- 39.Brorson H, Svensson B, Ohlin K. Suction-Assisted Lipectomy. In: Greene AK, Slavin S, Brorson H, editors, Lymphedema - Presentation, Diagnosis, and Treatment. Cham, Switzerland: Springer; 2015: p. 313-324.
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| 5. |
- Brorson, Håkan, et al.
(författare)
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Volume measurements and follow-up
- 2015
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Ingår i: Lymphedema : Presentation, Diagnosis, and Treatment - Presentation, Diagnosis, and Treatment. - Cham : Springer International Publishing. - 9783319144924 - 9783319144931 ; , s. 115-122
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Bokkapitel (refereegranskat)
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| 6. |
- Hydén, Håkan, et al.
(författare)
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The Concept of Norms in Sociology of Law
- 2008
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Ingår i: Contributions in Sociology of Law: remarks from a Swedish Horizon. - 1403-7246. ; 53, s. 15-32
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- The aim of this article is to propose a method for creating a more coherent concept of norms – and to deliver a tentative and open suggestion on how to define norms in a way that might fit into the context of Sociology of Law (further on shortened, SoL). The idea is that the norm concept can be chiselled out through ontological analysis, and that this analysis can be conducted in a way that allow every aspects of the norm concept to be scrutinized separately. The result will in the best case scenario be a kind of ‘open source’ construction where every individual research project can formulate its view of the common concept. The suggested ontological analysis is mainly founded on The Aristotelian concepts of ‘essence’ and ‘accident’. Thus the method is concerned with distinguishing between norm attributes that lie in their (the norms’) nature (collectively they form the definition) and other attributes (that are essential for the categorisation of norms).
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| 7. |
- Hytteborn, Håkan, et al.
(författare)
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Century-long tree population dynamics in a deciduous forest stand in central Sweden
- 2017
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Ingår i: Journal of Vegetation Science. - : Wiley. - 1100-9233 .- 1654-1103. ; 28:5, s. 1057-1069
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Tidskriftsartikel (refereegranskat)abstract
- Question: We quantify tree dynamics over a century of free development in a small broadleaved forest dominated by Fraxinus excelsior and Ulmus glabra. What are the internal and external factors driving the changes, and how predictable are they? What were the time scale and effects of the spread of Dutch elm disease (DED)? Location: Vårdsätra, eastern central Sweden.Methods: The survival, growth and recruitment of all trees (≥ 12 cm in girth) were monitored in 1912, 1967, 1988 and 2013 (more often for a part of the forest). Woody species in the field and shrub layers were surveyed in permanent plots in 1976 and 2012. We used transition matrix models to project changes in population sizes and species composition within the century and for 2050.Results: The results indicate that the forest was in a successional development during the first period. The species composition had stabilised by 1967, except for an expansion of Acer platanoides and the drastic effect of DED that struck the forest around 2000. It took only a decade to kill virtually all large elms in the forest, leading to strong decrease in stem density and basal area. The evidence for effects of DED is still weak, but there has been an increase in saplings, notably of Fraxinus, Prunus padus, Ulmus, and of shoots of Corylus avellana. Several species that are abundant in the vicinity and as seeds fail to establish (Picea abies, Betula spp., Quercus robur, Populus tremula). Projections for 2050 based on the third period (1988-2013) are probably unrealistic since also Fraxinus may disappear because of the recent arrival of the ash dieback.Conclusions: Slow dynamics in forests that could follow from climate change will locally probably be overruled by unforeseen catastrophes, such as invasions by forest pathogens. These initiate changes with long lag phases difficult to quantify. Still, a dense deciduous forest can resist invasion of colonist species and of regionally dominant conifers; the reason being unfavourable conditions for establishment rather than dispersal limitation
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| 8. |
- Hytteborn, Håkan, et al.
(författare)
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Spatial heterogeneity ensures long-term stability in vegetation and Fritillaria meleagris flowering in Uppsala Kungsäng, a semi-natural meadow
- 2023
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Ingår i: PLOS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 18:3
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Tidskriftsartikel (refereegranskat)abstract
- Semi-natural grasslands are becoming increasingly rare, and their vegetation may be affected by environmental changes and altered management. At Kungsängen Nature Reserve, a wet to mesic semi-natural meadow near Uppsala, Sweden, we analysed long-term changes in the vegetation using data from 1940, 1982, 1995 and 2016. We also analysed the spatial and temporal dynamics in the Fritillaria meleagris population based on countings of flowering individuals in 1938, 1981–1988 and 2016–2021. Between 1940 and 1982 the wet part of the meadow became wetter, which led to an increased cover of Carex acuta and pushed the main area of flowering of F. meleagris up towards the mesic part. Annual variation in the flowering propensity of F. meleagris (in May) was affected by temperature and precipitation in the phenological phases of growth and bud initiation (June in the previous year), shoot development (September in the previous year) and initiation of flowering (March–April). However, the response to weather was in opposite directions in the wet and mesic parts of the meadow, and the flowering population showed large year-to-year variation but no long-term trend. Variation in management (poorly documented) led to changes in different parts of the meadow, but the overall composition of the vegetation, species richness and diversity changed little after 1982. Species richness and species composition of the meadow vegetation, and the long-term stability of the F. meleagris population are maintained by the variation in wetness, highlighting the importance of spatial heterogeneity as an insurance against biodiversity loss in semi-natural grasslands and nature reserves generally.
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| 9. |
- Ohlin, Karin, et al.
(författare)
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Controlled compression therapy and compression garments
- 2015
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Ingår i: Lymphedema : Presentation, Diagnosis, and Treatment - Presentation, Diagnosis, and Treatment. - Cham : Springer International Publishing. - 9783319144924 - 9783319144931 ; , s. 213-225
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Bokkapitel (refereegranskat)
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| 10. |
- Svensson, Sara, 1981, et al.
(författare)
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Monocytes and pyrophosphate promote mesenchymal stem cell viability and early osteogenic differentiation
- 2022
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Ingår i: Journal of Materials Science-Materials in Medicine. - : Springer Science and Business Media LLC. - 0957-4530 .- 1573-4838. ; 33:1
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Tidskriftsartikel (refereegranskat)abstract
- Pyrophosphate-containing calcium phosphate implants promote osteoinduction and bone regeneration. The role of pyrophosphate for inflammatory cell-mesenchymal stem cell (MSC) cross-talk during osteogenesis is not known. In the present work, the effects of lipopolysaccharide (LPS) and pyrophosphate (PPi) on primary human monocytes and on osteogenic gene expression in human adipose-derived MSCs were evaluated in vitro, using conditioned media transfer as well as direct effect systems. Direct exposure to pyrophosphate increased nonadherent monocyte survival (by 120% without LPS and 235% with LPS) and MSC viability (LDH) (by 16-19% with and without LPS). Conditioned media from LPS-primed monocytes significantly upregulated osteogenic genes (ALP and RUNX2) and downregulated adipogenic (PPAR-gamma) and chondrogenic (SOX9) genes in recipient MSCs. Moreover, the inclusion of PPi (250 mu M) resulted in a 1.2- to 2-fold significant downregulation of SOX9 in the recipient MSCs, irrespective of LPS stimulation or culture media type. These results indicate that conditioned media from LPS-stimulated inflammatory monocytes potentiates the early MSCs commitment towards the osteogenic lineage and that direct pyrophosphate exposure to MSCs can promote their viability and reduce their chondrogenic gene expression. These results are the first to show that pyrophosphate can act as a survival factor for both human MSCs and primary monocytes and can influence the early MSC gene expression.
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