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  • 1193151.
    Öhrman, Olov G.W.
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.
    Johansson, A.-C.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.
    Lindblom, M.
    H2S removal with short time contactors in a pressurized black liquor gasification plant2010In: International Chemical Recovery Conference, 2010, Vol. 2, p. 172-178Conference paper (Refereed)
  • 1193152.
    Öhrman, Olov .G.W
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.
    Pettersson, Esbjörn
    Dewatering of Biomass Using Liquid Bio Dimethyl Ether2013In: Drying Technology, ISSN 0737-3937, E-ISSN 1532-2300, Vol. 31, no 11, p. 1267-1273Article in journal (Refereed)
    Abstract [en]

    An interesting integrated configuration in a thermochemical conversion biorefinery that is producing dimethyl ether (DME) is to use a small fraction of the BioDME for dewatering of the solid biomass feedstock. Therefore, the use of liquid BioDME was investigated in this study for pressurized dewatering of biomass at room temperature. Water was removed in liquid form from wet sawdust and wet wood chips using liquid DME in a laboratory-scale batch unit. Both the sawdust and the wood chips could be dewatered in a short time (minutes) to a moisture content of 15% (w/w) from an initial content of approximately 55% (w/w). Longer DME treatment times (hours) lowered the moisture content even further down to 8% (w/w), indicating that the transport phenomena in the porous biomass and the solubility of DME in water influence the dewatering characteristics. The DME dewatering performance, 12-22 g DME per g water removed, was similar to literature data on coal dewatering using liquid DME. The present study showed that DME dewatering of the solid biomass feedstock has potential as an energy-efficient dewatering process, especially in an integrated thermochemical conversion biorefinery. © 2013 Copyright Taylor and Francis Group, LLC.

  • 1193153.
    Öhrman, Olov G.W.
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.
    Weiland, Fredrik
    Johansson, A.J.
    Pettersson, Esbjörn
    RISE - Research Institutes of Sweden, Bioeconomy, ETC Energy Technology Center.
    Hedman, Henry
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.
    Leijenhorst, E. J.
    Assink, A.
    van de Beld, L.
    Pressurized oxygen blown entrained flow gasification of pyrolysis oil.2013In: Proceedings 21st European Biomass Conference and Exhibition, 2013, p. 441-445Conference paper (Refereed)
  • 1193154.
    Öhrman, Olov .G.W
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.
    Weiland, Fredrik
    Pettersson, E.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.
    Johansson, Ann-Christine
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.
    Hedman, Henry
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.
    Pedersen, M.
    Pressurized oxygen blown entrained flow gasification of a biorefinery lignin residue2013In: Fuel processing technology, ISSN 0378-3820, E-ISSN 1873-7188, Vol. 115, p. 130-138Article in journal (Refereed)
    Abstract [en]

    Renewable fuels could in the future be produced in a biorefinery which involves highly integrated technologies. It has been reported that thermochemical conversion (gasification) of lignocellulosic biomass has a high potential for end production of renewable biofuels. In this work, lignin residue from biochemical conversion of wheat straw was gasified in an oxygen blown pressurized entrained flow gasifier (PEBG) at 0.25-0.30 MWth, 0.45 < λ < 0.5 and 1 bar (g). A video camera mounted inside the PEBG was used to observe the flame during start up and during operation. Hydrogen (H 2), carbon monoxide (CO) and carbon dioxide (CO2) were the main gas components with H2/CO ratios varying during the gasification test (0.54-0.63). The methane (CH4) concentration also varied slightly and was generally below 1.7% (dry and N2 free). C2-hydrocarbons (< 1810 ppm) and benzene (< 680 ppm) were also observed together with low concentrations of hydrogen sulfide (H2S, < 352 ppm) and carbonyl sulfide (COS, < 131 ppm). The process temperature in the reactor was around 1200 C. The slag seemed to consist of Cristobalite (SiO2) and Berlinite (AlPO4) and Na, Ca, Mg, K and Fe in lower concentrations. Cooling of the burner will be necessary for longer tests to avoid safety shut downs due to high burner temperature. The cold gas efficiency and carbon conversion was estimated but more accurate measurements, especially the syngas flow, needs to be determined during a longer test in order to obtain data on the efficiency at optimized operating conditions. The syngas has potential for further upgrading into biofuels, but will need traditional gas cleaning such as acid gas removal and water gas shifting. Also, higher pressures and reducing the amount of N2 is important in further work. © 2013 Elsevier B.V.

  • 1193155. Öhrman, Olov
    et al.
    Hedlund, Jonas
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
    Synthesis and catalytic evaluation of zoned MFI films2006In: Microporous and Mesoporous Materials, ISSN 1387-1811, E-ISSN 1873-3093, Vol. 91, no 1-3, p. 312-320Article in journal (Refereed)
    Abstract [en]

    Alumina and quartz supports were coated with well-defined precursor ZSM-5 films ranging from 350 nm to 2300 nm in thickness. The precursor samples were subsequently treated with hydrochloric acid and hydrothermally treated in a silicalite-1 synthesis solution in order to obtain zoned MFI films. A dense, but rougher, silicalite-1 film was formed on top of the smooth precursor ZSM-5 film after two hydrothermal treatments. Defects such as open grain boundaries and cracks were observed by SEM and in concert, mesopores were detected by gas adsorption in the precursor and zoned films. The mesopore volume per gram film increased after acid treatment and zoning, probably due to that a small fraction of the zeolite film dissolved in this process. As expected, the aluminum concentration at the surface of the un-calcined zoned film was lower compared to that at the surface of the calcined precursor ZSM-5 film. However, after calcination of the zoned film, the concentration of aluminum at the surface increased, probably due to aluminum migration from the precursor film to the surface of the zoned film during calcination. The aluminum concentration at the surface of the calcined zoned film was even higher than at the surface of the calcined precursor ZSM-5 film. Consequently, the triisopropylbenzene cracking rate constant did not decrease as expected after zoning, probably due to the increased amount of defects and/or aluminum migration. The p-xylene diffusivity increased after zoning, probably due to the formation of defects, whereas the xylene isomerization rate constants were unaffected, as expected.

  • 1193156. Öhrman, Olov
    et al.
    Hedlund, Jonas
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
    Msimang, V.
    Catalysis Research Unit, Department of Chemical Engineering, University of Cape Town.
    Möller, V.
    Catalysis Research Unit, Department of Chemical Engineering, University of Cape Town.
    Sterte, Johan
    ZSM-5 structured catalysts coated with silicalite-12004In: Recent advances in the science and technology of zeolites and related materials. Part A: proceedings of the 14th International Zeolite Conference, Amsterdam: Elsevier, 2004, p. 677-684Conference paper (Refereed)
    Abstract [en]

    Alumina beads were coated with ZSM-5 films ranging from 150 nm to 2300 nm ill thickness. The ZSM-5 boated alumina beads were Subsequently hydrothermally treated in a silicalite-1 synthesis solution ill two steps Whereupon a dense silicalite-1 film was formed oil top of the ZSM-5 film. The materials were tested with two probe reactions and the reactivity was compared before and after coating with silicalite-1. As expected, the para-xylene (pX) isomerization reactivity showed no change for samples with and without the top layer of silicalite-1 for equal amounts Of zeolite. Surprisingly, the triisopropylbenzene (TIPB) conversion did not decrease after the silicalite-1 film was introduced. As measured by XPS, the aluminum concentration at the Surface of the uncalcined silicalite-1 film surface was lower compared to that at the Surface of the calcined ZSM-5 film. However, after calcination the concentration of aluminum was higher at the silicalite-1 film surface than at the ZSM-5 film Surface. These results Suggest that aluminum migrates from the ZSM-5 film into the silicalite-1 film during calcination and testing which results in all active top layer.

  • 1193157. Öhrman, Olov
    et al.
    Hedlund, Jonas
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
    Msimang, Velaphi
    Department of Chemical Engineering, Catalysis Research Unit, University of Cape Town.
    Möller, Klas
    Department of Chemical Engineering, Catalysis Research Unit, University of Cape Town.
    Thin ZSM-5 film catalysts on quartz and alumina supports2005In: Microporous and Mesoporous Materials, ISSN 1387-1811, E-ISSN 1873-3093, Vol. 78, no 2-3, p. 199-208Article in journal (Refereed)
    Abstract [en]

    Alumina beads, quartz and soda glass were coated with ZSM-5 films using a seeding method. Films with a thickness of 150, 350, 800 and 2300 nm were prepared. The catalysts were tested by para-xylene (pX) isomerization and triisopropylbenzene (TiPB) cracking. Model parameters, i.e. rate constants and diffusivities, were fitted to experimental results. The films on quartz glass were much more active for pX isomerization and for cracking of TiPB, which was also reflected by the model parameters. Low and zero rate constants for alumina and soda glass supported catalysts, respectively, were attributed to poisoning of the ZSM-5 film due to impurities in these supports. Larger diffusivity in quartz supported catalysts and thick films was attributed to more defects in the film.

  • 1193158. Öhrman, Olov
    et al.
    Hedlund, Jonas
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
    Sterte, Johan
    Synthesis and evaluation of ZSM-5 films on cordierite monoliths2004In: Applied Catalysis A: General, ISSN 0926-860X, E-ISSN 1873-3875, Vol. 270, no 1-2, p. 193-199Article in journal (Refereed)
    Abstract [en]

    Well-defined ZSM-5 films were prepared on cordierite monoliths using the seed film method. The monoliths were seeded with silicalite-1 seeds and hydrothermally treated either at 75 or at 150 °C in a single or several steps. By adding sodium hydroxide to the solution, the aluminum concentration in the zeolite increased. Consequently, films with different Si/Al ratios were prepared. The film thickness could be controlled from 110 nm to 9 μm. Multi-step synthesis was used to prevent bulk crystallization and ultrasound treatment was found to be beneficial (in order) to remove sedimented crystals on the top of the coatings. The zeolite-coated monoliths were active for p-xylene isomerization, and the test results indicated that the films became less deactivated than the films prepared on alumina beads.

  • 1193159. Öhrman, Olov
    et al.
    Häggström, Caroline
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
    Wiinikka, Henrik
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
    Hedlund, Jonas
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
    Gebart, Rikard
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
    Analysis of trace components in synthesis gas generated by black liquor gasification2012In: Fuel, ISSN 0016-2361, E-ISSN 1873-7153, Vol. 102, p. 173-179Article in journal (Refereed)
    Abstract [en]

    The only pressurized black liquor gasifier currently in operation is located in Sweden. The composition of the main components in the gas has been reported previously. The main components are H2, CO, CO2, N2, CH4, and H2S. In the present work, trace components in the gas have been characterized and the results are hereby reported for the first time. Samples were taken at two occasions during a one year period. The benzene concentration in the gas varied only slightly and the average concentration was 158 ppm. Benzene is formed by thermal cracking of the biomass. The COS concentration varied substantially and the average concentration was 47 ppm. The variations may be related to how the quench is operated. A few ppm of C2-hydrocarbons were also observed in the gas and the variation was probably a result of varying oxygen to black liquor ratio. No tars were observed in the gas. However, tar compounds, such as phenanthrene, pyrene, fluoranthene and fluorene were detected in deposits found on the pipe walls after the gas cooler. The concentration of particles in the synthesis gas was very low; <0.1 mg/N m3, which is comparable to the particulate matter in ambient air. Submicron particles were comprised of elements such as C, O, Na, Si, S, Cl, K, and Ca, and these particles probably originated from the black liquor. Larger particles were comprised mainly of Fe, S and Ni and these particles probably resulted from corrosion of steel in the plant pipe-work. In summary, the concentrations of trace components and particles in the gas are quite low.

  • 1193160. Öhrman, Olov
    et al.
    Nordgren, U.
    Luleå tekniska universitet.
    Creaser, Derek
    Luleå tekniska universitet.
    Sterte, Johan
    Zeolite ZSM-5 coatings on inert packing materials2001In: Zeolites and mesoporous materials at the dawn of the 21st century: proceedings of the 13th International Zeolite Conference, Amsterdam: Elsevier, 2001, p. 292-Conference paper (Refereed)
  • 1193161. Öhrman, Olov
    et al.
    Weiland, Fredrik
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
    Pettersson, Esbjörn
    Luleå University of Technology, Department of Engineering Sciences and Mathematics.
    Johansson, Ann-Christine
    Energy Technology Centre, Piteå.
    Hedman, Henry
    Energy Technology Centre, Piteå.
    Pedersen, Mads
    Biogasol, Lautrupvang 2A, 2750 Ballerup.
    Pressurized oxygen blown entrained flow gasification of a biorefinery lignin residue2013In: Fuel processing technology, ISSN 0378-3820, E-ISSN 1873-7188, Vol. 115, p. 130-138Article in journal (Refereed)
    Abstract [en]

    Renewable fuels could in the future be produced in a biorefinery which involves highly integrated technologies. It has been reported that thermochemical conversion (gasification) of lignocellulosic biomass has a high potential for end production of renewable biofuels. In this work, lignin residue from biochemical conversion of wheat straw was gasified in an oxygen blown pressurized entrained flow gasifier (PEBG) at 0.25–0.30 MWth, 0.45 < λ < 0.5 and 1 bar (g). A video camera mounted inside the PEBG was used to observe the flame during start up and during operation. Hydrogen (H2), carbon monoxide (CO) and carbon dioxide (CO2) were the main gas components with H2/CO ratios varying during the gasification test (0.54–0.63). The methane (CH4) concentration also varied slightly and was generally below 1.7% (dry and N2 free). C2-hydrocarbons (< 1810 ppm) and benzene (< 680 ppm) were also observed together with low concentrations of hydrogen sulfide (H2S, < 352 ppm) and carbonyl sulfide (COS, < 131 ppm). The process temperature in the reactor was around 1200 °C. The slag seemed to consist of Cristobalite (SiO2) and Berlinite (AlPO4) and Na, Ca, Mg, K and Fe in lower concentrations. Cooling of the burner will be necessary for longer tests to avoid safety shut downs due to high burner temperature. The cold gas efficiency and carbon conversion was estimated but more accurate measurements, especially the syngas flow, needs to be determined during a longer test in order to obtain data on the efficiency at optimized operating conditions. The syngas has potential for further upgrading into biofuels, but will need traditional gas cleaning such as acid gas removal and water gas shifting. Also, higher pressures and reducing the amount of N2 is important in further work.

  • 1193162.
    Öhrman, Rickard
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Energieffektivisering av Forsbacka oljesystem2012Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Skellefteå Kraft owns and operates the district heating network in the town of Lycksele. For this they have two sites, Skogsbacka CHP plant and Forsbacka heating plant. Forsbacka is the smaller plant with four boilers, two wood chip boilers and two that are oil-fired. The Forsbacka plant is mainly used during summer and at peak loads. For storage and supply of oil to the oil-fired boilers there are two 100 m3 cisterns. The oil system is old and built for heavy oil, which means that the oil has to be kept at minimum temperature of 35°C

    The aim of this report is to examine possible measures to make the storage and handling of the oil more energy and cost efficient.

    The results show that it would be a good idea to change to light oil and thus be able to lower the oil temperature to at least 20°C. This would halve the cost for keeping the oil warm, whereas an increased insulation of the cisterns would not be cost efficient. Another recommended measure for energy saving would be to install frequency converter for speed regulation of the oil pumps, which would reduce the energy use to halve.

  • 1193163.
    Öhrming, Jan
    Södertörn University, School of Social Sciences, Business Studies.
    Allt görs liksom baklänges: Verksamheten vid Nya Karolinska Solna2017 (ed. 1)Book (Refereed)
    Abstract [sv]

    Byggandet av Nya Karolinska Solna (NKS) är förknippat med en dröm från slutet av 1990-talet om ett sjukhus som ett nav i ett internationellt konkurrenskraftigt universitetssjukvårdssystem. Det skulle vara ett specialsjukhus för regionen och inta en central roll för utvecklingen av Stockholmsregionen till ett biomedicinskt kraftcentrum. 2008 fattades beslutet om att bygga det nya sjukhuset och fylla det med ett nytt verksamhetsinnehåll. Beslutsprocessen rörande verksamhetsinnehållet vid NKS har präglats av interimistiska beslut och utvecklats till en process som förändrat villkoren för andra beslutsprocesser med stora ekonomiska och praktiska återverkningar för hälso- och sjukvården i Stockholmsregionen.

    Här redovisas hur det gick till när besluten om vård, forskning och utbildning vid NKS fattades. Och framför allt diskuteras NKS-projektets otillräckliga beslutsunderlag och de utdragna beslutsprocessernas konsekvenser för det regionala vårdsystemet.

    Jan Öhrming är Senior professor i företagsekonomi vid Södertörns högskola.

  • 1193164.
    Öhrming, Jan
    Stockholm University.
    Förvaltning av flerbostadshus: om arbetsorganisation och föreställningar som villkor för samspel och boendemedverkan1987Doctoral thesis, monograph (Other academic)
    Abstract [en]

    Utifrån 63 flerbostadshus i Stockholm och Nynäshamn behandlas förvaltningsarbetets uppbyggnad och förlopp. Boken vänder sig främst till förvaltningsansvariga i företag och bostadsrättsföreningar, men även till yrkes- och lekmän med andra relationer till flerbostadshusens förvaltning.

  • 1193165.
    Öhrming, Jan
    Södertörn University College, School of Business Studies, Business studies.
    Hälso- och sjukvårdens fragmentering: från lokalt till transnationellt organiserad sjukvård2008 (ed. 1)Book (Other academic)
  • 1193166.
    Öhrming, Jan
    Södertörn University, School of Business Studies, Business studies.
    Sjukvård, företagande och näringspolitik2011In: Business history in Sweden: Näringslivshistoria i Sverige / [ed] Mikael Lönnborg & Paulina Rytkönen, Möklinta: Gidlunds förlag, 2011, 1, p. 548-573Chapter in book (Refereed)
  • 1193167.
    Öhrming, Jan
    Södertörn University College, School of Business Studies, Business studies.
    Sjukvårdens fragmentering och entreprenörerna2008In: Perspektiv på förnyelse och entreprenörskap i offentlig verksamhet / [ed] Anders Lundström, Elisabeth Sundin, Örebro: Forum för småföretagarforskning , 2008, Vol. S. 55-71, p. 55-71Chapter in book (Other academic)
  • 1193168.
    Öhrming, Jan
    et al.
    Södertörn University, Avdelning 4, Business studies.
    Sverke, Magnus
    Andemeningen är bra, men...: kvalitetsfrågans betydelse för vårdens arbetsmiljö och organisation2002In: Kvalitet utan gränser: en kritisk belysning av kvalitetsstyrning / [ed] Eva Bejerot, Hans Hasselbladh, Lund: Academia Adacta , 2002, 1, Vol. S. 188-208, 54 ref., p. 188-208Chapter in book (Other academic)
  • 1193169.
    Öhrming, Jan
    et al.
    Södertörn University, Avdelning 4, Business studies.
    Sverke, Magnus
    Bolagiseringen av S:t Görans sjukhus: en proaktiv organisering2001Book (Other academic)
    Abstract [sv]

    Akut vård och akutsjukhus är ett av samhällets mest sammansatta servicesystem. Detta förhållande har alltmer uppmärksammats i skuggan av hälso- och sjukvårdens övergripande problem - de totala kostnaderna och finansieringen - vilka i början av 1990-talet framkallade en serie reformer inom landets landsting. Den kanske mest radikala åtgärden var bolagiseringen (1994) och sedermera privatiseringen (1999) av S:t Görans Sjukhus i Stockholm. Exemplet S:t Göran har också ansetts så framgångsrikt att det har följts av nya bolagiseringar och fr.o.m. årsskiftet 2000/2001 förväntas i stort sett all akutsjukvård i Stockholm bedrivas inom bolag. Detta till trots saknas nästan helt litteratur som analyserar denna unika utveckling.Denna bok skärskådar utvecklingen (1994 - 1999) inom S:t Görans Sjukhus AB (bolaget) respektive Södertälje Sjukhus (förvaltningen) - två akutsjukhus i Stockholm med olika driftsformer, varierande historia och olika förutsättningar att utnyttja de möjligheter som 1990-talet förde med sig. Boken tar upp hälso- och sjukvårdens effektivitet, lyfter fram osäkerhet som ett av de framträdande arbetsvillkoren för sjukvården och beskriver chefernas osäkerhet och i kontrast till denna läkarnas, sjuksköterskornas och undersköterskornas trygghet samt förklarar meningsskapandets (sensemaking) centrala betydelse i vården.

  • 1193170.
    Öhrming, Jan
    et al.
    Södertörn University, Avdelning 4, Business studies.
    Sverke, Magnus
    Transition towards privatization: uncertainty and sensemaking in two Swedish emergency hospitals2003In: New organizational challenges for human service work / [ed] Johnny Hellgren, München: Hampp , 2003, 1, Vol. S. 75-93, 46 ref., p. 75-93Chapter in book (Other academic)
  • 1193171.
    Öhrn, A.
    et al.
    Department of Neutron Research, Uppsala University, Box 525, S-75120 Uppsala, Sweden.
    Blomgren, J.
    Department of Neutron Research, Uppsala University, Box 525, S-75120 Uppsala, Sweden.
    Andersson, P.
    Department of Neutron Research, Uppsala University, Box 525, S-75120 Uppsala, Sweden.
    Ataç, Ayşe
    Department of Neutron Research, Uppsala University, Box 525, S-75120 Uppsala, Sweden.
    and, 35 other co-authors
    Elastic scattering of 96 MeV neutrons from iron, yttrium, lead.2008In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 77Article in journal (Refereed)
  • 1193172.
    Öhrn, A.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Blomgren, J.
    Atac, A.
    Gustavsson, C.
    Klug, J.
    Mermod, P.
    Nilsson, L.
    Pomp, S.
    Österlund, M.
    Bergenwall, B.
    Elmgren, K.
    Olsson, N.
    Tippawan, U.
    Dangtip, S.
    Phansuke, P.
    Nadel-Turonski, P.
    Jonsson, O.
    Prokofiev, A. V.
    Renberg, P. U.
    Ascher, P.
    Blideanu, V.
    Le Brun, C.
    Lecolley, J. F.
    Lecolley, F. R.
    Louvel, M.
    Marie-Noury, N.
    Schweitzer, C.
    Eudes, Ph.
    Haddad, F.
    Lebrun, C.
    Ledoux, X.
    Blann, M.
    Chiba, S.
    Duarte, H.
    Kalbach, C.
    Koning, A. J.
    Watanabe, Y.
    Inelastic neutron scattering cross sections at 96 MeV for ironManuscript (Other (popular science, discussion, etc.))
  • 1193173.
    Öhrn, A
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Blomgren, J
    Department of Neutron Research. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Park, H
    Khurana, S
    Nolte, R
    Schmidt, D
    Wilhelmsen, K
    A monitor for neutron flux measurements up to 20 MeV2007In: Tenth Symposium on Neutron Dosimetry,Uppsala, Sweden, June 12-16, 2006 (accepted)., 2007Conference paper (Refereed)
  • 1193174.
    Öhrn, A
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Blomgren, J
    Department of Neutron Research. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Park, H
    Khurana, S
    Nolte, R
    Schmidt, D
    Wilhelmsen, K
    A monitor for neutron flux measurements up to 20 MeV2006In: International workshop on Fast Neutron Detectors and Applications,Cape Town, South Africa, April 3-6, 2006, p. 048-Conference paper (Refereed)
  • 1193175.
    Öhrn, A.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research.
    Blomgren, J.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research.
    Park, H.
    Khurana, S.
    Nolte, R.
    Schmidt, D.
    Wilhelmsen, K.
    Calibration procedure for a neutron monitor at energies below 20 MeV2008In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, Vol. 592, no 3, p. 405-413Article in journal (Refereed)
    Abstract [en]

    A liquid scintillation detector aimed for neutron energy and fluence measurements in the energy region below 20 MeV has been calibrated using monoenergetic and white spectrum neutron fields. Careful measurements of the proton light output function and the response matrix have been performed allowing for the application of unfolding techniques using existing codes. The response matrix is used to characterize monoenergetic neutron fields produced by the T(d,n) reaction at low deuteron energies.

  • 1193176. Öhrn, A.
    et al.
    Gustavsson, Cecilia
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Blann, M.
    Blideanu, V.
    Blomgren, Jan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Chiba, S.
    Duarte, H.
    Haddad, F.
    Kalbach, C.
    Klug, J.
    Koning, A.
    Le Brun, C.
    Lebrun, C.
    Lecolley, F. R.
    Ledoux, X.
    Marie-Noury, N.
    Mermod, P.
    Nilsson, L.
    Österlund, Michael
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Pomp, Stephan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Prokofiev, Alexander V.
    Uppsala University, The Svedberg Laboratory.
    Tippawan, U.
    Watanabe, Y.
    Measurements of Inelastic Neutron Scattering at 96 MeV from Carbon, Iron, Yttrium and Lead2011In: Journal of the Korean Physical Society, ISSN 0374-4884, E-ISSN 1976-8524, Vol. 59, no 2, p. 1817-1820Article in journal (Refereed)
    Abstract [en]

    Inelastic neutron scattering for (12)C, (58)Fe, (89)Y and (208)Pb have been measured at 96 MeV at the The Svedberg Laboratory in Uppsala and double-differential cross sections are reported. Data cover an excitation energy range of 0-45 MeV and the angular intervals are 28 - 58 degrees for (12)C, 26 - 65 degrees for (58)Fe and 26 - 52 degrees for (89)Y and (208)Pb. In this experiment, neutron detection is based on conversion to protons in an active scintillator converter. An analysis technique in which the neutron spectra have been obtained through a folding procedure using the response of the detector system has been used. The results are compared to and are in reasonable agreement with several model predictions and with inelastic neutron scattering data at 65 MeV from University of California, Davis, USA.

  • 1193177.
    Öhrn, A
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Klug, J
    Blomgren, J
    Department of Neutron Research. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Johansson, C
    Mermot, P
    Nilsson, L
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Pomp, S
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Österlund, M
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Prokofiev, A
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Tutin, G
    Tippawan, U
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Elastic neutron scattering at 96 MeV2007In: International Conference on Nuclear Data for Science and Technology,Nice, France, April 22-27, 2007 (accepted), 2007Conference paper (Refereed)
  • 1193178.
    Öhrn, Albin
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Från ord till (e-)handling: - Integration av e-handelssystem i SiteVision2009Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    The client, Senselogic, had noticed an increased demand for an e-commerce system integrated into its product, SiteVision, something that did not previously exist. Senselogic wanted to integrate a third-party system to manage e-commerce. The problem was that there were very many e-commerce solutions to choose from. In order to select the best system it was necessary to evaluate the e-commerce systems and compare them to each other. To identify the elements that has to be included in an e-commerce system a study of literature was conducted. From the parts identified in the study of literature, a number of criteria were presented. Those criteria were then supplemented with additional criteria that Senselogic required of an e-commerce system before integrating it with SiteVision. Before the evaluation a number of test cases were created to test whether the ecommerce systems fulfilled to the criteria developed. These test cases were then used in the evaluation of the e-commerce systems while a test score was filled in. Then the evaluations of the different systems were compiled and compared in order to see which system best fulfilled the criteria. There was one system that scored higher than the others in the evaluation created. That was the system chosen to integrate with SiteVision.

  • 1193179.
    Öhrn, Alexandra
    Örebro University, Örebro University School of Business.
    Det genuina sparandet och en hållbar utveckling: En empirisk analys om varfö̈r vissa ekonomiers utveckling är hållbar och andras inte.2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 1193180. Öhrn, Anders
    et al.
    Aquilante, Francesco
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Quantum Chemistry.
    p-Benzoquinone in aqueous solution: stark shifts in spectra, asymmetry in solvent structure2007In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 9, p. 470-480Article in journal (Refereed)
    Abstract [en]

    Results from a simulation of p-benzoquinone (PBQ) in water is presented. An explicit solvent representation is used together with a multiconfigurational ab initio quantum chemical method. The electronic n -> pi* transitions are studied in aqueous solution and the two such transitions are both blue-shifted but to different degree. Both non-equilibrium and many-body effects are found to have decisive influence on the solvation: despite stronger hydrogen bonding between solute and solvent in an excited state than in the ground state, there is a blue-shift, and the solvent structure around the non-polar PBQ is asymmetric, which is argued to come from special many-body effects. The unusual result of strengthened hydrogen bonds in the excited state that follows from an excitation of a non-bonding electron on a proton acceptor, is explained by the near-linear Stark shift that is present in the transition.

  • 1193181.
    Öhrn, Angelica
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Neutron Scattering at 96 MeV2008Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Data on elastic scattering of 96 MeV neutrons from 56Fe, 89Y and 208Pb in the angular interval 10-70° are presented. The previously published data on 208Pb have been extended, as a new method has been developed to obtain additional information at the most forward angles. The results are compared with phenomenological and microscopic optical potentials. The theory predictions are in general in good agreement with the experimental data.

    A study of the deviation of the zero-degree cross section from Wick's limit has been performed. The data on 208Pb are in agreement with Wick's limit, while those on lighter nuclei overshoot the limit significantly.

    A novel analysis method has been developed to obtain the inelastic neutron emission cross sections from the existing 56Fe data. The method is based on folding a trial spectrum with the response of the detector setup. The data cover the angular interval 26-65° and an excitation energy range of 0-45 MeV, ranges hitherto not studied. The results are compared with nuclear model predictions and found to be in good agreement with the experimental data.

  • 1193182.
    Öhrn, Angelica
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Blomgren, Jan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Andersson, P.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Atac, Ayse
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Gustavsson, Cecilia
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Klug, J.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Mermod, P.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Pomp, Stephan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Wolniewicz, Peter
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Österlund, Michael
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Nilsson, Leif
    Uppsala University, The Svedberg Laboratory. Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Bergenwall, B.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics. Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Radiation Sciences.
    Elmgren, K.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Olsson, N.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Tippawan, Udomrat
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Dangtip, S.
    Phansuke, P.
    Nadel-Turonski, P.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Radiation Sciences.
    Jonsson, O.
    Uppsala University, The Svedberg Laboratory.
    Prokofiev, A. V.
    Uppsala University, The Svedberg Laboratory.
    Renberg, P. U.
    Uppsala University, The Svedberg Laboratory.
    Blideanu, V.
    Le Brun, C.
    Lecolley, J. F.
    Lecolley, F. R.
    Louvel, M.
    Marie-Noury, N.
    Schweitzer, C.
    Eudes, Ph.
    Haddad, F.
    Lebrun, C.
    Bauge, E.
    Delaroche, J. P.
    Girod, M.
    Ledoux, X.
    Amos, K.
    Karataglidis, S.
    Crespo, R.
    Haider, W.
    Elastic scattering of 96 MeV neutrons from iron, yttrium, and lead2008In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 77, no 2, p. 024605-Article in journal (Refereed)
    Abstract [en]

    Data on elastic scattering of 96 MeV neutrons from Fe-56, Y-89, and Pb-208 in the angular interval 10-70 degrees are reported. The previously published data on Pb-208 have been extended, as a new method has been developed to obtain more information from data, namely to increase the number of angular bins at the most forward angles. A study of the deviation of the zero-degree cross section from Wick's limit has been performed. It was shown that the data on Pb-208 are in agreement with Wick's limit while those on the lighter nuclei overshoot the limit significantly. The results are compared with modern optical model predictions, based on phenomenology and microscopic nuclear theory. The data on Fe-56, Y-89, and Pb-208 are in general in good agreement with the model predictions.

  • 1193183.
    Öhrn, Angelica
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Blomgren, Jan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
    Park, H.
    Khurana, S.
    Nolte, R.
    Schmidt, D.
    A monitor for neutron flux measurements up to 20 MeV2007In: Radiation Protection Dosimetry, ISSN 0144-8420, E-ISSN 1742-3406, Vol. 126, no 1-4, p. 394-397Article in journal (Refereed)
    Abstract [en]

    A liquid scintillation detector aimed for neutron energy andfluence measurements in the energy region <20 MeV has beencalibrated using monoenergetic and white spectrum neutron fields.Careful measurements of the proton light output function andthe response matrix have been performed allowing for the applicationof unfolding techniques using existing codes. The response matrixis used to characterise monoenergetic neutron fields producedby the T(d,n) at a low-energy deuteron accelerator installedat the Swedish Defense Research Agency (FOI).

  • 1193184.
    Öhrn, Anita
    Mid Sweden University, Faculty of Human Sciences, Department of Business, Economics and Law.
    Vilka CSR aktiviteter redovisar svenska företag till sina intressenter och i vilken omfattning?: En studie över företagen på Stockholmsbörsens Large Cap lista och hur olika faktorer påverkar deras CRS redovisning2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 1193185.
    Öhrn, Anna
    KTH, School of Architecture and the Built Environment (ABE), Real Estate and Construction Management.
    International Real Estate Investments: – The Practice of Currency Risk Management2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Globalization is a fact in a lot of businesses today, something that is also relevant in the real estate industry. The currency differs depending on where investments are made and as a result of this real estate investors also face currency risks in addition to all other real estate related risks they already need to manage. The management of currency risk can have different forms, and the purpose of this thesis is to find out how, if and why real estate investors, especially Swedish, hedge this risk. To create an understanding of the issue, a summary of some theories on the currency market and real estate market can be found in the thesis. Only a small amount of research exists on the subject in Sweden and the theories are mainly from foreign studies and the currency risk management from other business sectors. These theories, combined with the research questions, have formed the questions for the interviews this study is made of.

    Debt in the local currency of where the investment is made can be seen as a natural hedge for the currency risk. Reduced loan-to-value (LTV) ratios from banks for real estate investments have led to a situation where loans, which can cannot be used to the same extent. That makes it more interesting to find out which other instruments are being used to avoid the currency risk and if the real estate investors wants to avoid it at all. The purpose of this thesis is to find the answers to these questions.

    The interviewed consultancy firms and banks as well as the investors themselves state that the currency risk is a risk that should not occur in Swedish real estate

    investments on markets with a different currency. The reason for this is that the real estate assets should be the primary focus of the business. To hedge this risk, bank loans and currency futures are the most frequently used instruments by Swedish real estate investors.

  • 1193186.
    Öhrn, Anna
    Blekinge Institute of Technology, Faculty of Engineering, Department of Industrial Economics.
    The use of mobile health applications and health improvements2018Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: This thesis aims to investigate if the use of mobile health (mHealth) applications have positive effects on health.  

    Objectives: This research are to provide an insight of how people are using mHealth applications but also provide an insight of the target group. Additionally, the thesis will provide an analysis of the proposed Structural Equation Model (SEM) to understand the influencing factors (constructs) for health improvement.   

    Method: In this research a Structural Equation Model (SEM) approach was used in which a questionnaire with closed ended questions related to each construct were provided to collect the data. The data were analyzed by the computer program IBM SPSS 25 and the SEM was made by the IBM SPSS AMOS 25.  

    Results: The proposed theoretical SEM model showed validity and the proposed hypotheses 1 and 2 were significant for this model. The corresponding contributed construct to improve health, were “Healthcare Service” and “mHealth App Behavior”. “New Technology” did not contribute to improvement of health directly, but it correlated strongly to “Healthcare Service” but also to “mHealth App Behavior”.  

    Conclusions: The target group was defined as a group of early adopters who used mobile health applications and more specifically, they used fitness apps to enhance health. People in the target group were high educated and had occupations which corresponded well with their education. Additionally, this group used their knowledge by reading and understanding health information when they needed healthcare service to improve health. 

    Keywords: Adoption, Health, mHealth, New Technology

  • 1193187.
    Öhrn, Annica
    Linköping University, Department of Medical and Health Sciences, Health Technology Assessment and Health Economics. Linköping University, Faculty of Health Sciences.
    Measures of Patient Safety: Studies of Swedish Reporting Systems and Evaluation of an Intervention Aimed at Improved Patient Safety Culture2012Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Unsafe health care delivery results in millions of patients suffering from injuries or death worldwide. A Swedish study estimated the prevalence of preventable adverse events as high as 8.6% in hospital care, which demonstrates that patient safety is no less a problem in Sweden than elsewhere. Reporting of adverse events has become an integral part of patient safety work. The aim of reporting is to identify patient safety problems and provide background data and information for efforts to improve patient safety. However, adverse events in health care can be captured and measured using different methods and stored in disparate systems that are not fully integrated. This makes it difficult to obtain a complete coherent picture of the frequency and nature of various types of adverse events. Another difficulty is to distinguish between adverse events and accepted complications of medical care.

    The overall aim of this thesis is to generate knowledge for improved understanding of how patient safety can be measured in terms of reporting adverse events and improved by targeting patient safety culture with an intervention implemented in a Swedish county council. Three research questions have been derived from the aim: (1) To what extent can analysis of patient claims contribute to an understanding of the magnitude of the patient safety problem? (2) To what extent do data captured from different reporting systems in Sweden differ? (3) To what extent can a structured intervention that fosters learning on patient safety issues and encourages leadership commitment improve the patient safety culture in a Swedish county council from a five-year perspective?

    The research is based on studies of three national reporting systems: Lex Maria to the National Board of Health and Welfare; patient claims to the County Councils´ Mutual Insurance Company; and medical data reported to the National Swedish Spine Register (Swespine). Data have also been assembled as part of an evaluation within the Patient Safety Dialogue intervention.

    This thesis indicates that different Swedish reporting systems provide disparate views and have many discrepancies regarding data quality and coverage of adverse events. Patient claims seem to be an important source of information that can complement information from incident reporting systems and quality registries in health care to provide an understanding of the magnitude of the patient safety problem.

    The research also shows that a structured intervention that fosters learning on patient safety issues and encourages leadership commitment can improve the culture of patient safety. However, a longer period of time and focused efforts might be required to achieve improvements across all departments within a Swedish county council.

  • 1193188.
    Öhrn, Annica
    et al.
    Linköping University, Department of Medicine and Health Sciences, Health Technology Assessment and Health Economics. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Patient Security.
    Andersson, Christer
    Östergötlands Läns Landsting, Patient Security.
    Elfström, Johan
    Östergötlands Läns Landsting, Patient Security. Linköping University, Department of Medicine and Health Sciences, Thoracic Surgery. Linköping University, Faculty of Health Sciences.
    Liedgren, Christer
    Östergötlands Läns Landsting, Patient Security.
    Rutberg, Hans
    Östergötlands Läns Landsting, Patient Security.
    Framgång kräver ledningens stöd och resurser2007In: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 104, no 4, p. 224-228Article in journal (Other academic)
  • 1193189.
    Öhrn, Annica
    et al.
    Linköping University, Department of Medical and Health Sciences, Health Technology Assessment and Health Economics. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Health and Developmental Care, Patient Safety.
    Elfström, Johan
    Linköping University, Department of Medical and Health Sciences, Thoracic Surgery. Linköping University, Faculty of Health Sciences.
    Liedgren, Christer
    Östergötlands Läns Landsting, Center for Health and Developmental Care, Patient Safety.
    Rutberg, Hans
    Linköping University, Department of Medical and Health Sciences, Health Technology Assessment and Health Economics. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Health and Developmental Care, Patient Safety.
    Reporting of Sentinel Events in Swedish Hospitals: A Comparison of Severe Adverse Events Reported by Patients and Providers2011In: Joint Commission Journal on Quality and Patient Safety, ISSN 1553-7250, E-ISSN 1938-131X, Vol. 37, no 11, p. 495-501Article in journal (Refereed)
    Abstract [en]

    Background: Mandatory and voluntary reporting of adverse events is common in health care organizations but a more accurate understanding of the extent of patient injury may be obtained if additional sources are used. Patients in Sweden may file a claim for economic compensation from the national insurance system if they believe they have sustained an injury. The extent and pattern of reporting of serious adverse events in a mandatory national reporting system was compared with the reporting of adverse events on the basis of patient claims.

    Methods: Regional sentinel event reports were compared with malpractice claims data between 1996 and 2003. A sample consisting of 113 patients with deaths or serious injuries was selected from the malpractice claims data source. The medical records of these patients were reviewed by three chief medical officers.

    Results: Of the deaths or injuries associated with the 113 patients—25 deaths, 37 with more than 30% disability, and 51 with 16%-30% disability—23 (20%) had been reported by chief medical officers to the National Board of Health and Welfare as sentinel events. Most adverse events were found in orthopedic surgery, and orthopedic injuries had more serious consequences. None of the patient injuries caused by infections were reported as sentinel events. Individual errors were more frequent in cases reported as sentinel events.

    Conclusions: Adverse events causing severe harm are underreported to a great extent in Sweden despite the existence of a mandatory reporting system; physicians often consider them to be complications. Health care organizations should consider using a portfolio of tools—including incident reporting, medical record review, and analysis of patient claims—to gain a comprehensive picture of adverse events.

  • 1193190.
    Öhrn, Annica
    et al.
    Linköping University, Department of Medical and Health Sciences, Health Technology Assessment and Health Economics. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Health and Developmental Care, Patient Safety.
    Elfström, Johan
    Linköping University, Department of Medical and Health Sciences, Thoracic Surgery. Linköping University, Faculty of Health Sciences.
    Tropp, Hans
    Linköping University, Department of Clinical and Experimental Medicine. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Surgery, Orthopaedics and Cancer Treatment, Department of Spinal Surgery.
    Rutberg, Hans
    Linköping University, Department of Medical and Health Sciences, Division of Health Care Analysis. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Health and Developmental Care, Patient Safety.
    What can we learn from patient claims?: Analysing of patient injuries following orthopaedic surgery2012In: Patient Safety in Surgery, ISSN 1754-9493, Vol. 6, no 2, p. 1-6Article in journal (Refereed)
    Abstract [en]

    Background: Objective data on the incidence and pattern of adverse events after orthopaedic surgical procedures remain scarce, secondary to the reluctance for encompassing reporting of surgical complications. The aim of this study was to analyze the nature of adverse events after orthopaedic surgery reported to a national database for patient claims in Sweden.

    Methods: In this retrospective review data from two Swedish national databases during a 4-year period were analyzed. We used the "County Councils' Mutual Insurance Company", a national no-fault insurance system for patient claims, and the "National Patient Register at the National Board of Health and Welfare".

    Results: A total of 6,029 patient claims filed after orthopaedic surgery were assessed during the study period. Of those, 3,336 (55%) were determined to be adverse events, which received financial compensation. Hospital-acquired infections and sepsis were the most common causes of adverse events (n = 741; 22%). The surgical procedure that caused the highest rate of adverse events was "decompression of spinal cord and nerve roots" (code ABC**), with 168 adverse events of 17,507 hospitals discharges (1%). One in five (36 of 168; 21.4%) injured patient was seriously disabled or died.

    Conclusions: We conclude that patients undergoing spinal surgery run the highest risk of being severely injured and that these patients also experienced a high degree of serious disability. The most common adverse event was related to hospital acquired infections. Claims data obtained in a no-fault system have a high potential for identifying adverse events and learning from them.

  • 1193191.
    Öhrn, Annica
    et al.
    Linköping University, Faculty of Medicine and Health Sciences. Linköping University, Department of Medical and Health Sciences, Division of Health Care Analysis. Region Östergötland, Center for Health and Developmental Care.
    Ericsson, Carin
    Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center for Health and Developmental Care. Linköping University, Department of Medical and Health Sciences, Division of Community Medicine.
    Andersson, Christer
    Linköping University, Department of Medical and Health Sciences. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center for Health and Developmental Care.
    Elfström, Johan
    Linköping University, Department of Medical and Health Sciences. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center for Health and Developmental Care.
    High Rate of Implementation of Proposed Actions for Improvement With the Healthcare Failure Mode Effect Analysis Method: Evaluation of 117 Analyses2018In: Journal of patient safety, ISSN 1549-8417, E-ISSN 1549-8425, Vol. 14, no 1, p. 17-20Article in journal (Refereed)
    Abstract [en]

    OBJECTIVES: The aims of this study were to investigate what kind of impact the Healthcare Failure Mode Effect Analysis (HFMEA) had on the organization in 1 county council in Sweden and to evaluate the method of working for multidisciplinary teams performing HFMEA. Three main outcome measures were used: the quality of the documentation from the HFMEAs, fulfillment of the primary goal of the HFMEA, and, finally, whether proposed actions for improvement were implemented.

    METHODS: The study involved retrospective analysis of the documentation from 117 performed HFMEAs from 3 hospitals in the county council of Östergötland, Sweden, and interviews or questionnaires with team leaders and managers between 2006 and 2010.

    RESULTS: A proposed change in the organizational structure was the most common issue in the analyses. Eighty-nine percent of the written reports were of high quality. A median of 10 serious risks were detected, and 10 proposed actions (median) were made. In 78% of the HFMEAs, all or a large part of these had been implemented a few years afterward. We were unable to find factors that promoted the rate of implementation of proposed actions. Seventy-eight percent of the managers were completely satisfied with the results of the HFMEA. The mean cost per risk analysis was &OV0556;1909.

    CONCLUSIONS: Most of the proposed actions were implemented. The use of HFMEA can be improved using fewer team leaders but with more experience. The work involved in writing a report can be reduced without loss of impact on the organization.This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License, where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially.

  • 1193192.
    Öhrn, Annica
    et al.
    Linköping University, Department of Medical and Health Sciences, Health Technology Assessment and Health Economics. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Health and Developmental Care, Patient Security.
    Nilsen, Per
    Linköping University, Department of Medical and Health Sciences, Social Medicine and Public Health Science. Linköping University, Faculty of Health Sciences.
    Patientsäkerhetsdialog: lärande och kunskapsspridning för förbättrad säkerhetskultur2010In: Implementering: teori och tillämpning inom hälso- och sjukvård / [ed] Per Nilsen, Lund: Studentlitteratur , 2010, 1, p. 263-Chapter in book (Other academic)
    Abstract [sv]

    Frågor kring implementering av forskningsbaserad kunskap i hälso- och sjukvårdens verksamhet får allt större uppmärksamhet. Det så kallade gapet mellan produktion av forskningsresultat och vad som nyttiggörs i vården diskuteras i dag som ett stort problem, såväl för samhället som för de individer som inte erbjuds bästa möjliga vård. Denna bok utgör en introduktion till teoribildning och forskningsrön inom flera kunskapsområden som har relevans för frågor kring implementering inom hälso- och sjukvården. Samtliga författare är verksamma som forskare vid den tvärvetenskapliga institutionen för medicin och hälsa vid Linköpings universitet. Boken vänder sig till studenter, lärare och forskare som intresserar sig för implementeringsfrågor samt till dem som arbetar praktiskt med implementerings- och förändringsarbete inom hälso- och sjukvård. Läs mer om redaktören Läs mer om doktorandkursen IMPLEMENTERING ht 2011 Linköpings Universitet

  • 1193193.
    Öhrn, Annica
    et al.
    Linköping University, Department of Medical and Health Sciences, Health Technology Assessment and Health Economics. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Health and Developmental Care, Patient Safety.
    Olai, Anders
    Östergötlands Läns Landsting, Center for Surgery, Orthopaedics and Cancer Treatment, Department of Spinal Surgery.
    Rutberg, Hans
    Östergötlands Läns Landsting, Patient Security. Linköping University, Department of Medical and Health Sciences, Health Technology Assessment and Health Economics. Linköping University, Faculty of Health Sciences.
    Nilsen, Per
    Linköping University, Department of Medical and Health Sciences, Social Medicine and Public Health Science. Linköping University, Faculty of Health Sciences.
    Tropp, Hans
    Linköping University, Department of Clinical and Experimental Medicine, Orthopaedics and Sports Medicine. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Surgery, Orthopaedics and Cancer Treatment, Department of Orthopaedics in Linköping.
    Adverse events in spine surgery in Sweden: A comparison of patient claims data and national quality register (Swespine) data2011In: Acta Orthopaedica, ISSN 1745-3674, E-ISSN 1745-3682, Vol. 82, no 6, p. 727-731Article in journal (Refereed)
    Abstract [en]

    Background and purpose: Our knowledge of complications and adverse events in spinal surgery is limited, especially concerning incidence and consequences. We therefore investigated adverse events in spine surgery in Sweden by comparing patient claims data from the County Councils' Mutual Insurance Company register with data from the National Swedish Spine Register (Swespine).

    Methods: We analyzed patient claims (n = 182) to the insurance company after spine surgery performed between 2003 and 2005. The medical records of the patients filing these claims were reviewed and compared with Swespine data for the same period.

    Results: Two-thirds (119/182, 65%) of patients who claimed economic compensation from the insurance company were registered in Swespine. Of the 210 complications associated with these 182 claims, only 74 were listed in Swespine. The most common causes of compensated injuries (n = 139) were dural lesions (n = 40) and wound infections (n = 30). Clinical outcome based on global assessment, leg pain, disability, and quality of health was worse for patients who claimed economic compensation than for the total group of Swespine patients.

    Interpretation: We found considerable under-reporting of complications in Swespine. Dural lesions and infections were not well recorded, although they were important reasons for problems and contributed to high levels of disability. By analyzing data from more than one source, we obtained a better understanding of the patterns of adverse events and outcomes after spine surgery.

  • 1193194.
    Öhrn, Annica
    et al.
    Linköping University, Department of Medical and Health Sciences, Health Technology Assessment and Health Economics. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Health and Developmental Care, Patient Safety.
    Rutberg, Hans
    Östergötlands Läns Landsting, Center for Health and Developmental Care, Patient Safety.
    Nilsen, Per
    Linköping University, Department of Medical and Health Sciences, Social Medicine and Public Health Science. Linköping University, Faculty of Health Sciences.
    Patient safety dialogue: evaluation of an intervention aimed at achieving an improved patient safety culture2011In: Journal of patient safety, ISSN 1549-8425, Vol. 7, no 4, p. 185-92Article in journal (Refereed)
    Abstract [en]

    OBJECTIVES: Patient Safety Dialogue, a local intervention inspired by walk round-style approaches, was implemented in 2005 in a Swedish county council to achieve a positive patient safety culture in health care. This paper evaluates the results and changes after 5 years of the Patient Safety Dialogue in 50 departments (37 medical and 13 psychiatric) in 3 hospitals.

    METHODS: The patient safety culture maturity was rated on 5 levels that correspond with the Manchester Patient Safety Assessment Framework. The assessment was based on information supplied by the departments and discussions between clinical leaders and staff members with special patient safety assignments and representatives from a patient safety unit. Three patient safety areas were assessed: hospital-acquired infections, outcome measurements, and general patient safety. Each department was assessed 3 times: at baseline and at follow-ups at 18 and 36 months. Average scores were calculated for each of the 3 safety areas on all occasions. The departments were classified into 3 types of trajectories on the basis of the development of their scores over time.

    RESULTS: More than two-thirds of the departments attained higher scores in round 3 than in round 1. Seventy-eight percent of the departments in the general patient safety area were categorized as continuously improving or developing, compared with 68% for outcome measurement and 50% for hospital-acquired infection. Approximately one-third was categorized as nonimproving, with scores in round 3 lower than or equal to the scores in round 1. The medical departments had higher scores than the psychiatric departments in all rounds.

    CONCLUSIONS: Most of the 50 departments were evaluated to have improved their patient safety culture during the 5 years of the Patient Safety Dialogue, suggesting that the intervention is effective in supporting an improved patient safety culture. However, one-third of the departments did not improve during the 5-year study period.

  • 1193195.
    Öhrn, Annika
    et al.
    Linköping University, Department of Medical and Health Sciences, Health Technology Assessment and Health Economics. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Patient Security.
    Tropp, Hans
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Orthopaedics and Sports Medicine. Östergötlands Läns Landsting, Orthopaedic Centre, Department of Orthopaedics Linköping.
    Scheer, Johan
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Orthopaedics and Sports Medicine. Östergötlands Läns Landsting, Orthopaedic Centre, Department of Orthopaedics Linköping.
    Horn, Bengt
    Rutberg, Hans
    Elfström, Johan
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Thoracic Surgery.
    Flest vårdskador inom ortopedi, visar Patientförsäkringen. Skadepanorama och vårdkonsumtion för denna patientgrupp har klartlagts.2006In: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 103, p. 534-539Article in journal (Other academic)
    Abstract [sv]

       

  • 1193196. Öhrn, Cecilia
    Design av ett hydraulaggregat2007Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 1193197. Öhrn, Dan
    Skoldaghem2006Independent thesis Basic level (professional degree)Student thesis
  • 1193198.
    Öhrn, Dan
    Karlstad University, Faculty of Social and Life Sciences.
    Skoldaghem2006Independent thesis Basic level (professional degree), 10 points / 15 hpStudent thesis
    Abstract [sv]

    Sammanfattning

    Det här examensarbetet handlar om vikten av ett bra samarbete mellan olika personalkategorier för att det ska gå bra för skoldaghem-/heldagsskolelever när de återskolats till klass igen efter en tid på nämnda institutioner. Jag ställde mig frågan om skoldaghem och heldagsskolor i allmänhet klarar av att hjälpa sina elever att minska sina problem så att de klarar av sin skolsituation på ett bättre sätt när de återgår till vanlig klass igen. I litteraturgenomgången har jag sökt efter svar, bl.a. från tidigare forskning. Där framgår att samarbetet mellan skoldaghemmet/heldagsskolan och ”hemskolans” personal är väldigt viktigt för en lyckad återskolning och skolgången fortsättningsvis. Jag har intervjuat personal på heldagsskolor för att se hur de samarbetar med klasslärarna, framförallt vid återskolningprocessen. Jag har också via enkäter frågat klasslärare om deras erfarenheter av hur det går för elever som återskolats till vanlig klass igen och hur de ser på samarbetet med heldagsskolan.

    Nyckelord: heldagsskola, segregering, skoldaghem, återskolning

  • 1193199. Öhrn, E.
    et al.
    Hägglund, Solveig
    Karlstad University, Faculty of Arts and Education, Department of Education.
    Social responsibility in the classroom: Learning the code and develop the skill1999Conference paper (Refereed)
  • 1193200. Öhrn, Elin
    Den mångkulturella skolan - framväxt och utveckling i skolans styrdokument och riksdagstryck2003Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Dagens samhälle karaktäriseras av en ständigt eskalerande utvecklingstakt och medför nya villkor för människors livssituation. Sverige är idag ofta i blickfånget i samhällsdebatten vad gäller den internationalisering som pågår på samhällslivets alla områden. Detta innebär att människor upplever allt tätare förändringar och ställs inför allt fler val och alternativ vilket ökar kravet på kunskap och utbildning. Eleverna i den svenska skolan är allt mer delaktiga i ett internationellt perspektiv. Många elever har utländsk bakgrund, olika språk och kulturer möts i skolan, utlandsresor, media och Internet bidrar till mer internationellt och globalt orienterade elever. Syftet med uppsatsen är att urskönja framväxten av den strävan mot den mångkulturella skolan och det mångkulturella samhället som idag är central. Därmed har tre representativa läroplaner med nedslag 1962, 1980 och 1994 analyserats utifrån det mångkulturella perspektivet. Fokus ligger på uppkomsten av och inställningen till den mångkulturella skolan i styrdokumenten och i riksdagstryck där diskussionerna bakom läroplansförändringarna kan följas.

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