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- Andersson, Madelen, et al.
(författare)
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Outbreak of a beta-lactam resistant non-typeable Haemophilus influenzae sequence type 14 associated with severe clinical outcomes
- 2015
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Ingår i: BMC Infectious Diseases. - : BioMed Central. - 1471-2334. ; 15
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Tidskriftsartikel (refereegranskat)abstract
- Background: During October 2011 several residents and staff members at a long-term care facility (LTCF) for elderly fell ill with respiratory symptoms. Several of the residents required hospitalization and one died. Non-typeable Haemophilus influenzae (NTHi) was identified as the causative pathogen. Methods: A descriptive analysis of the outbreak and countermeasures was performed. For each identified bacterial isolate implied in the outbreak, standard laboratory resistance testing was performed, as well as molecular typing and phylogenetic analysis. Results: The identified H. influenzae was beta-lactamase negative but had strikingly high MIC-values of ampicillin, cefuroxime and cefotaxime. All isolates displayed the same mutation in the ftsI gene encoding penicillin-binding protein (PBP) 3, and all but one were identified as sequence type 14 by Multilocus Sequence Typing (MLST). In total 15 individuals in connection to the LTCF; 8 residents, 6 staff members and one partner to a staff member were colonized with the strain. Conclusion: This report illustrates the existence of non-typeable H. influenzae with high virulence, and furthermore emphasizes the importance of continuous surveillance of possible outbreaks in health care facilities and prompt measures when outbreaks occur.
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| 2. |
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| 3. |
- Ladenberger, Anna, et al.
(författare)
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GEMAS : Indium in agricultural and grazing land soil of Europe - Its source and geochemical distribution patterns
- 2015
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Ingår i: Journal of Geochemical Exploration. - : Elsevier BV. - 0375-6742 .- 1879-1689. ; 154, s. 61-80
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Tidskriftsartikel (refereegranskat)abstract
- Indium is a very rare element, which is usually not reported in geochemical data sets. It is classified as a critical metal, with important applications in the electronics industry, especially in the production of solar panels and liquid-crystal displays (LCDs). Over 4000 samples of agricultural and grazing land soil have been collected for the "Geochemical Mapping of Agricultural and Grazing Land Soil of Europe" (GEMAS) project, carried out by the EuroGeoSurveys Geochemistry Expert Group. Indium concentrations in soil have been analysed using aqua regia extraction followed by ICP-MS, Median values of In for both land use types are nearly identical, 0.0176 mg/kg for agricultural soil and 0.0177 mg/kg for grazing land soil. The spatial distribution patterns of In in European soil are mainly controlled by geology and the presence of Zn and Sn mineralisation. The preference of In to accumulate in the fine-grained fraction of soil with high clay content dominates the major anomaly patterns on the geochemical maps. In the Mediterranean region, secondary In enrichment is visible in karst areas. A notable feature of the In spatial distribution is the large difference between northern and southern Europe, with median values of 0.012 and 0.021 mg In/kg, respectively, suggesting that, in addition to lithology, weathering and climate are important factors influencing In soil enrichment over time.
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| 4. |
- Lundstrom, US, et al.
(författare)
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Forest soil acidification: Monitoring on the regional scale, Varmland, Sweden
- 1998
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Ingår i: Ambio. - 0044-7447. ; 27:7, s. 551-556
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Tidskriftsartikel (refereegranskat)abstract
- A forest soil survey was performed at 180 sites in the county of Varmland in mid-western Sweden. The survey included field observations, the total composition of the soil, the composition of the exchangeable pool and the soil solution at four depths. The southwestern part of Varmland was affected by soil acidification while no indications of soil acidification were found in the north. Evaluation of the data with principal component analysis (PCA) showed that the dominating variables, giving the same spatial distribution as the atmospheric deposition, were those of the soil solution composition and especially the concentration of total Al, inorganic Al and pH in the B-horizon. The composition of the exchangeable pool was less indicative of acidification. Sampling of soil solution in large surveys is possible by the centrifuge drainage technique.
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| 5. |
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| 6. |
- Nyberg, Lars, et al.
(författare)
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Skogsmarkens kemi i Värmland : En jämförelse av ståndortskarteringen och Värmlandsundersökningen
- 1998
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Rapporten redovisar en jämförelse av två markkemiska undersökningar i Värmland, Värmlandsundersökningen på 180 platser 1994, och den nationella ståndortskarte-ringen på upp till 89 platser 1983-87. I jämförelsen har data för mark-pH, utbytbart förråd av katjoner och mineraljordens totalinnehåll av element tagits med. Jämförelsen påverkades av ett antal faktorer som skiljde sig åt i de båda undersökningarna, t ex att antalet provpunkter var olika, att provtagningen i ståndortskarteringen omfattade olika typer av jordmåner medan Värmlandsundersökningen endast omfattade podsolerade jordar och att de kemiska analyserna utfördes med delvis olika metoder.För mark-pH och de olika katjonerna i det utbytbara förrådet var såväl medelnivåerna som de regionala variationsmönstren olika för ståndortskarteringen och Värmlands-undersökningen. Skill-naden i nivå kan förklaras av att rikare jordar ingick i ståndorts-karteringen. Dessutom kan surt ned-fall under de ca tio år som skiljde undersökning-arna i tiden ha sänkt mark-pH och minskat det utbytbara förrådet av baskatjoner, även om det sura nedfallet minskat under perioden. Jämförelser av huvudelementen i mine-raljorden visade på relativt god överensstämmelse mellan ståndortskarteringen och Värmlandsundersökningen, såväl vad gäller medelnivå i länet och vad gäller den geo-grafiska variationen. För spårelementen i mineraljorden skilde medelnivåerna stort mellan ståndortskarteringen och Värmlandsundersökningen, troligen beroende på att provtagningsdjupen var olika
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