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| 2. |
- Lundén, Thomas, et al.
(författare)
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A hundred years later. Streetcars are still rattling in Baltic cities
- 2012
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Ingår i: Baltic Worlds. - 2000-2955 .- 2001-7308. ; 5:3-4, s. 37-44
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Tidskriftsartikel (refereegranskat)abstract
- A young geographer by the name of Sten DeGeer mapped the cities around the Baltic Sea in an article published in 1912. As an attempt to capture the urban structure of Baltic region cities, his paper is unique. In this article, we comment on his meticulous descriptions of these cities, with a century long perspective.
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| 3. |
- Wichmann, Anita, et al.
(författare)
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Microbial modulation of energy availability in the colon regulates intestinal transit.
- 2013
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Ingår i: Cell host & microbe. - : Elsevier BV. - 1934-6069 .- 1931-3128. ; 14:5, s. 582-90
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Tidskriftsartikel (refereegranskat)abstract
- Gut microbiota contribute to host metabolic efficiency by increasing energy availability through thefermentation of dietary fiber and production of short-chain fatty acids (SCFAs) in the colon. SCFAs are proposed to stimulate secretion of the proglucagon (Gcg)-derived incretin hormone GLP-1, whichstimulates insulin secretion (incretin response) andinhibits gastric emptying. We find that germ-free(GF) and antibiotic-treated mice, which have severely reduced SCFA levels, have increased basal GLP-1 levels in the plasma and increased Gcg expression in the colon. Increasing energy supply, either through colonization with polysaccharide-fermenting bacteria or through diet, suppressed colonic Gcg expression in GF mice. Increased GLP-1 levels in GF mice did not improve the incretin response but instead slowed intestinal transit. Thus, microbiota regulate the basal levels of GLP-1, and increasing these levels may be an adaptive response to insufficient energy availability in the colon that slows intestinal transit and allows for greater nutrient absorption.
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| 4. |
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1989 med svenska ögon : Vittnesseminarium 22 oktober 2009
- 2010. - 1
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Samlingsverk (redaktörskap) (övrigt vetenskapligt/konstnärligt)abstract
- Året 1989 innebar en vändpunkt i den europeiska historien, och även i världsmåttstock. Berlinmuren raserades och de kommunistiska diktaturerna i Östeuropa föll samman, bara för att inom ett par år även följas av det sovjetiska imperiet. Demokratiska regimer uppstod, om än under vånda och med senare bakslag.Tjugo år efter händelserna anordnades ett vittnesseminarium vid Södertörns högskola på temat 1989 med svenska ögon. Seminariet med dess kommentarer från diplomatin, underrättelsetjänsten och massmedia återges i skriften. Förstod vi vad som hände i öst?
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| 5. |
- Balogh, Péter, 1982-
(författare)
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Perpetual borders : German-Polish cross-border contacts in the Szczecin area
- 2014
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Borderlands are often peripheral geographically, administratively, and economically. A particularly illustrative case is the Szczecin area at the border between Poland and Germany, where a large city on one side neighbours to a sparsely populated hinterland on the other. There is a number of similar cases throughout Europe, but studies on them point to a mixed level of linkages following the opening and removal of the physical border.At the project’s start there were few if any studies on the Szczecin area per se, which was here studied through various methods. On the one hand, different pre-EU enlargement plans and visions for the area’s development were compared with practices and realities of recent years. This shows that earlier imaginations on the development potentials have not quite materialised, although some of them were probably too optimistic and ambitious from the beginning. Some of the area’s potentials following EU-enlargement have been more successfully exploited than others, and disproportionately by actors coming from outside. On the other hand, cross-border contacts were studied in the discourses on and attitudes towards the other side among local and regional elites, and among local residents more generally. This revealed a polarised attitudinal landscape, not least when compared to country-wide opinion surveys in both Germany and Poland. This is in line with other studies showing that identities are particularly accentuated in border situations, where the Other is more frequently encountered.These results support recent investigations pointing to a continued relevance of the border even after the physical barriers are removed. At the same time, another contribution of this work to border studies is that the time and contingency of the importance of identities and of the border needs more attention. In the Szczecin area, awareness of national identities and of the boundary appeared to be particularly high just after changes in the border’s status occurred – i.e. in 1989–1991, and then around the years 2007–2010. But while its importance may be fluctuating over time, given the opportunities and resources the boundary provides it will always be maintained in some forms.
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| 6. |
- Chateau, Denis, et al.
(författare)
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Long Distance Enhancement of Nonlinear Optical Properties Using Low Concentration of Plasmonic Nanostructures in Dye Doped Monolithic Sol-Gel Materials.
- 2016
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Ingår i: Advanced Functional Materials. - Weinheim : Wiley. - 1616-301X .- 1616-3028. ; 26:33
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Tidskriftsartikel (refereegranskat)abstract
- Monolithic sol-gel silica composites incorporating platinum-based chromophores and various types of gold nanoparticles (AuNPs) are prepared and polished to high optical quality. Their photophysical properties are investigated. The glass materials show well-defined localized surface plasmon resonance (SPR) absorbance from the visible to NIR. No redshifts of the AuNP plasmon absorption peaks due to the increase in nanoparticle doping concentration are observed in the glasses, proving that no or very small SPR coupling effects occur between the AuNPs. At 600 nm excitation, but not at 532 nm, the AuNPs improve the nonlinear absorption performance of glasses codoped with 50 × 10−3 m of a Pt-acetylide chromophore. The glasses doped with lower concentrations of AuNPs (2-5 μm average distance) and 50 × 10−3 m in chromophore, show a marked improvement in nonlinear absorption, with no or only small improvement for the more highly AuNP doped glasses. This study shows the importance of excitation wavelength and nanoparticle concentration for composite systems employing AuNPs to improve two-photon absorption of chromophores. [ABSTRACT FROM AUTHOR]
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| 8. |
- Ekberg, Anders, 1967, et al.
(författare)
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Identifying the root causes of damage on the wheels of heavy haul locomotives and its mitigation
- 2014
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Ingår i: Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. - : SAGE Publications. - 0954-4097 .- 2041-3017. ; 228:6, s. 663-672
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Tidskriftsartikel (refereegranskat)abstract
- The paper illustrates how damage patterns in the form of rolling contact fatigue (RCF) on wheels, can be employed to identify and improve underlying operational conditions. The focus is on RCF of locomotive wheels operating on the Iron Ore Line in northern Sweden and Norway. Seasonal changes and damage patterns are charted. Potential root causes for observed damage patterns are identified and investigated. Mitigating actions are proposed and the efficiency of implemented actions is quantified.
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| 9. |
- Ekberg, Anders, 1967, et al.
(författare)
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Identifying the root causes of damage on the wheels of heavy haul wheel damage phenomena
- 2013
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Ingår i: Proceedings of the 10th International Heavy Haul Conference (IHHA 2013), February 4–6, New Dehli, India. ; , s. 520-526
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Konferensbidrag (refereegranskat)abstract
- The paper illustrates how damage patterns, in particular in the form of rolling contact fatigue (RCF), can be employed to identify underlying operational conditions. In particular the focus is on RCF of wheel occurring at the Iron Ore line in north Sweden and Norway. The paper charts seasonal changes and damage patterns, and potential root causes are identified and investigated. Finally mitigating actions are proposed.
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| 10. |
- Fredricsson, Malin, et al.
(författare)
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Nationell luftövervakning – Sakrapport med data från övervakning inom Programområde Luft t.o.m. 2017
- 2018
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Naturvårdsverket, Luftenheten, ansvarar för den nationella luftövervakningen i bakgrundsmiljö i Sverige. I rapporten redovisas resultat från verksamheten inom Programområde Luft avseende mätningar (genomförda av IVL, SU, SLU och SMHI) till och med 2017 och regionala modellberäkningar (utförda av SMHI) till och med 2016.För flertalet av de luftföroreningskomponenter som övervakas inom den nationella miljöövervakningen har det, sedan mätningarna startade för mellan 15 och 35 år sedan, generellt sett skett en avsevärd förbättring avseende såväl halter i luft som deposition i bakgrundsmiljö. Utvecklingen har dock varierat i något olika utsträckning beroende på komponenter och lokalisering i landet. Föroreningsbelastningen är oftast lägre ju längre norrut i landet man kommer.För de flesta ämnen som det finns miljökvalitetsnormer (MKN) respektive miljömål för ligger halterna i regional bakgrund avsevärt lägre än angivna gräns- och målvärden. Halterna av ozon överskrider dock i dagsläget MKN för hälsa.
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