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  • 62801. Öhlander, Björn
    et al.
    Lindvall, Manfred
    Widerlund, Anders
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Holmström, Henning
    Carlsson, Erik
    Peinerud, Elsa K
    Correge, Olivier
    A system approach to mine waste remediation, the Kristineberg mine, northern Sweden2003In: Acid rock drainage: application and sustainability of technologies : sixth international conference ; 14 - 17 July 2003, Cairns, Queensland, Australia ; proceedings, Carlton, Victoria: The Australian Institute of Mining and Metallurgy , 2003, p. 81-92Conference paper (Refereed)
  • 62802.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Ljungberg, J.
    Holmström, H.
    Luleå tekniska universitet.
    Desorption of metals retained secondarily after release by sulphide oxidation: the main mechanism for groundwater contamination in the tailings at the Laver mine, northern Sweden2001In: GFF, ISSN 1103-5897, E-ISSN 2000-0863, Vol. 123, no 3, p. 153-162Article in journal (Refereed)
    Abstract [en]

    Geochemical studies of pore water and groundwater in sulphide-bearing tailings have been performed at the Laver mine in northern Sweden. Pore water has been sampled from just above the groundwater table down to the peat and till underlying the tailings. Groundwater has been sampled weekly from April to November in pipes installed at various depths in the tailings. All samples were analysed for major and trace elements by using ICP-AES and ICP-MS. When the oxidation front in the tailings is moving downwards, metals released by weathering in this low-pH environment are to a large extent retained secondarily in the tailings below the oxidation front and do not reach the groundwater, except in areas where the oxidation front is situated close to the groundwater table. Vertical flow of precipitation water contaminated with metals released by sulphide oxidation is, thus, not the major explanation for groundwater contamination. Instead, contamination occurs when the advancing oxidation front pushes the secondary enrichments of metals ahead to meet the groundwater table and the metals are released to the groundwater. The release of metals is caused by desorption due to the low pH in this environment. Areas of the tailings deposit with shallow groundwater table are at present the main sources of metal release. There is a seasonal variation in the composition of groundwater, particularly shallow groundwater. This is caused by changing levels of the groundwater table. Rising groundwater table results in outflush of metals in areas where the groundwater reaches secondarily retained metals. A steady trend with rising groundwater table after snowmelt results in a larger proportion of contaminated water in shallow groundwater, which decreases during the autumn. Concentration peaks of Cu and other metals in shallow groundwater may be the result of small, rapid rises of the groundwater table due to strong precipitation, superimposed on the general seasonal trend.

  • 62803.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Lu, Ming
    Alakangas, Lena
    Effect of liming a permanently stratifies pit lake, Rävlidmyran, northern Sweden2007In: Mining and the environment international conference: proceedings, Centre for Environmental Monitoring, Laurentian University , 2007Conference paper (Refereed)
    Abstract [en]

    Rävlidmyran pit lake situated in Northern Sweden had low pH, and a permanent stratification with anoxic water at depth. To improve the water quality, the pit lake was limed by using Ca(OH)2. Before liming, the lake was stratified with low pH (3.0 - 3.4) and high concentration of dissolved oxygen between 0 and 5 m depth, with a transition zone from 5 to 8 m depth, and a zone with pH 3.2 - 5.5 and very low dissolved oxygen from 8 m depth to the bottom. Metals such as Al, Cu and Pb had highest concentrations in the upper zone whereas the concentrations of most other elements including As, Ca, Cd, Fe, Mg, Mn, S and Zn increased with depth. The stratification remained also after the liming treatment. pH increased to about 8 in the whole water column although only one sixth of the Ca(OH)2 was rapidly dissolved, and the remaining part accumulated in the bottom sludge. Redox decreased, especially in the oxygen poor zone at depth. Concentrations of Fe, Mn, Zn and Mg decreased strongly in the upper oxic water, due to formation of oxyhydroxides. In the anoxic bottom water, the concentrations of these elements gradually increased towards pre-liming levels. Aluminium and Cu were almost completely depleted in the entire water column due to pH increase and precipitation of minerals such as gibbsite. The bottom sludge formed after the liming was dominated by Ca(OH)2, calcite and a group of Fe(II)-Fe(III) oxyhydroxides, so called green rust. Metals removed from the dissolved phase of the water column accumulated in the sludge. Although the bottom sludge will have a buffering effect for some time, the poor water mixing in the pit lake will rapidly result in acid water in the upper zones when liming ceases.Key Words: AMD, pit lake, liming, geochemistry, water column, bottom sludge

  • 62804.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Markkula, Heikki
    Luleå University of Technology.
    Alteration associated with the gold-bearing quartz veins at Middagsberget, northern Sweden1994In: Mineralium Deposita, ISSN 0026-4598, E-ISSN 1432-1866, Vol. 29, no 2, p. 120-127Article in journal (Refereed)
    Abstract [en]

    The mesothermal Au deposit at Middagsberget in northern Sweden is associated with irregular stock-works of quartz veins occurring in shear zones across a dioritic intrusion. Alteration in the shear zones is characterized by sericitization, chloritization, the presence of sulphides and several generations of veins and small-scale fractures. Small fractures which are filled with variable amounts of quartz, carbonate, sericite, chlorite, albite and sulphides, are particularly abundant in zones having a high Au content. In general, these fractures are younger than the major quartz veins and were apparently important for strong Au-enrichment. Au is associated with arsenopyrite and it occurs as droplets or interfillings in the arsenopyrite or at the crystal surface; together with pyrrhotite as inclusions in arsenopyrite; as free grains in silicates but close to arsenopyrite; or in very small fractures in carbonates. The Au-mineralization is associated with elevated contents of As, S, Sb and W and depletion of Cu, Zn, Ge and Bi. The entire altered areas are enriched in Au compared with the < 1 to 15 ppb found in the host intrusion. During alteration an initial increase in Na or K was accompanied by a weak enrichment of Au and associated elements together with a depletion of elements such as Ca and Mg. In Au-rich samples this alkali enrichment was overprinted by the carbonate-and sulphide-bearing fractures, which often led to an increased Ca-content. An clear zonation of alteration types has not been found. The host rock has been altered by several generations of fluids: the shear zones were repeatedly ruptured and new small-scale fractures were opened. The different fluids did not, therefore, flow through identical paths although they penetrated the same major zones. This resulted in a complex pattern of variously superimposed alterations.

  • 62805.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Mellqvist, C.
    Skiöld, T.
    Swedish Museum of Natural History.
    Sm-Nd isotope evidence of a collisional event in the Precambrian of northern Sweden1999In: Precambrian Research, ISSN 0301-9268, E-ISSN 1872-7433, Vol. 93, no 1, p. 105-117Article in journal (Refereed)
    Abstract [en]

    The Sm-Nd isotope characteristics of c. 1.9 and c. 1.8 Ga granitoids occurring close to the edge of the Archaean craton in northern Sweden have been studied. Strongly negative εNd(t) values occur farther southwest in the potassic 1.8 Ga granitoids than in the calc-alkaline 1.9 Ga granitoids. Intrusions of the younger granitoids with distinctly negative εNd(t) values are surrounded by granitoids of the older group with positive values. Northeast of the 1.8 Ga granitoids discussed here, the c. 1.9 Ga calc-alkaline intrusions formed within the Archaean continent have the same Sm-Nd isotope characteristics as the 1.8 Ga granitoids to the southwest. Our interpretation is that a juvenile volcanic-arc terrane to the south collided with and was thrust onto the Archaean continent after the formation of the 1.9 Ga granitoids. The outcome was that these juvenile rock masses were obducted onto the reworked Archaean continent. The 1.8 Ga granitoids were formed by remobilisation of continental crust. Partial melting at 1.8 Ga resulted in the intrusion of granitoids carrying the Sm-Nd isotopic signature of the Archaean continent into juvenile rocks. It is probable that the collision discussed here was part of a major accretion and amalgamation to the Archaean craton after the formation of the calc-alkaline 1.9 Ga granitoids, but before the formation of the 1.8 Ga granitoids.

  • 62806.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Müller, Barbara
    Institute of Geotechnical Engineering, ETH Hönggerberg, Zürich.
    Axelsson, Mikael
    Varian Analytical Instruments, Solna.
    Alakangas, Lena
    An attempt to use LA-ICP-SMS to quantify enrichment of trace elements on pyrite surfaces in oxidizing mine tailings2007In: Journal of Geochemical Exploration, ISSN 0375-6742, E-ISSN 1879-1689, Vol. 92, no 1, p. 1-12Article in journal (Refereed)
    Abstract [en]

    Metals released from oxidation and weathering of sulphide minerals in mine tailings are to a high degree retained at deeper levels within the tailings themselves. To be able to predict what could happen in the future with these secondarily retained metals, it is important to understand the retention mechanisms. In this study an attempt to use laser ablation high-resolution ICP-MS (LA-ICP-SMS) to quantify enrichment of trace elements on pyrite surfaces in mine tailings was performed. Pyrite grains were collected from a profile through the pyrite-rich tailings at the Kristineberg mine in northern Sweden. At each spot hit by the laser, the surface layer was analyzed in the first shot, and a second shot on the same spot gave the chemical composition of the pyrite immediately below. The crater diameter for a laser shot was known, and by estimating the crater depth and total pyrite surface, the total enrichment on pyrite grains was calculated. Results are presented for As, Cd, Co, Cu, Ni and Zn. The results clearly show that there was an enrichment of As, Cd, Cu and Zn on the pyrite surfaces below the oxidation front in the tailings, but not of Co and Ni. Arsenic was also enriched on the pyrite grains that survived in the oxidized zone. Copper has been enriched on pyrite surfaces in unoxidized tailings in the largest amount, followed by Zn and As. However, only 1.4 to 3.1% of the Cd and Zn released by sulphide oxidation in the oxidized zone have been enriched on the pyrite surfaces in the unoxidized tailings, but for As and Cu corresponding figures are about 64 and 43%, respectively. There were many uncertainties in these calculations, and the results shall not be taken too literally but allowed the conclusion that enrichment on pyrite surfaces is an important process for retention of As and Cu below the oxidation front in pyrite rich tailings. Laser ablation is not a surface analysis technique, but more of a thin layer method, and gives no information on the type of processes resulting in enrichment on the pyrite surfaces. Although only pyrite grains that appeared to be fresh and without surface coatings were used in this study, the possibility that a thin layer of Fe-hydroxides occurred must be considered. Both adsorption to the pyrite directly or to Fe-oxyhydroxides may explain the enrichment of As, Cd, Cu and Zn on the pyrite surfaces, and, in the case of Cu, also the replacement of Fe(II) by Cu(II) in pyrite.

  • 62807.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Nisca, Dan
    Tectonic control and genesis of Proterozoic molybdenite occurrences in northern Sweden1988In: Proceedings of the Seventh Quadrennial IAGOD Symposium / [ed] Ebbe Zachrisson, Taylor and Francis Group , 1988, p. 603-612Conference paper (Refereed)
  • 62808.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Nisca, Dan
    Swedish Geological Co..
    Tectonic control of Precambrian molybdenite mineralization in Northern Sweden1985In: Economic geology and the bulletin of the Society of Economic Geologists, ISSN 0361-0128, E-ISSN 1554-0774, Vol. 80, no 2, p. 505-512Article in journal (Refereed)
    Abstract [en]

    The major molybdenite occurrences of N Sweden are mostly confined to the Proterozoic continental domain. The molybdenite occurrences are in aplites, pegmatites and metamorphosed volcanics, located in narrow supracrustal belts surrounding granites. The Mo deposits are associated with faults and dome structures (apical parts of cupolas), as recognized by geophysical methods

  • 62809.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Nordblad, Fredrik
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Lax, Kaj
    Geological Survey of Sweden.
    Ecke, Frauke
    Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment.
    Ingri, Johan
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Biogeochemical mapping of stream plants to trace acid sulphate soils: A comparison between water geochemistry and metal content in macrophytes2014In: Geochemistry: Exploration, Environment, Analysis, ISSN 1467-7873, E-ISSN 2041-4943, Vol. 14, no 1, p. 85-94Article in journal (Refereed)
    Abstract [en]

    The efficiency of biogeochemical mapping for identifying acid sulphate soils (AS soils) was studied by sampling and analysing water, transplanted aquatic moss (Fontinalis antipyretica) and leaves of the vascular plant Calamagrostis purpurea at two sites in a stream in northern Sweden with AS soils in its drainage area. One upstream sampling station (Mårtsmarken) was situated in an area dominated by till, and a downstream station (Persraningen) was situated in an area where AS soils are common. Metal contents in F. antipyretica and C. purpurea at these sites were compared to those in water (both unfiltered samples, and samples subjected to 0.22 μm membrane filtration and 1 kDa ultrafiltration to obtain data on metal speciation and its effects on uptake). Oxidation of sulphides with associated increases in acidity and release of metals were clearly reflected by differences in the water samples. At Persraningen the pH was lower than at Mårtsmarken, and the unfiltered concentrations of Al, Ca, Cd, Co, Cu, K, Mg, Mn, Ni, P, S, Sr, Y and Zn were higher. At the upstream station, Mårtsmarken, the suspended fraction was an important carrier of Fe and P, and the colloidal concentrations were higher than or similar to the dissolved concentrations for all determined elements except Na and K. At Persraningen the low pH resulted in changes of speciation, so that the dissolved concentrations were higher than the colloidal concentrations for most elements. For Al, As, Cr, Cu, Pb and Y, the dissolved and colloidal concentrations were similar. For Fe, the colloidal concentration was usually higher than the dissolved concentration, and suspended Fe was detected. Aluminium, Cr, Cu, Fe and Y concentrations were significantly higher in Fontinalis antipyretica at Persraningen than at Mårtsmarken. In addition, concentrations of Al and Fe in C. purpurea were significantly higher at Persraningen. Our results highlight the potential of biogeochemical mapping for predicting the occurrence of AS soils. A limitation is the strong pH dependence of the uptake of metals in the aquatic mosses resulting in that only a few of the elements typically occurring at high concentrations in waters draining AS soils are enriched in the macrophytes. A combination of maps showing both absolute concentrations and elemental ratios would be useful for this, including not only ratios of previously suggested utility (e.g. Y:Pb and Ni:Pb), but also others, such as Y:Ca, Al:Ca, Cu:Ca, Y:Mg, Al:Mg and Cu:Mg. © 2014 AAG/The Geological Society of London.

  • 62810.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Romer, Rolf L.
    Luleå University of Technology.
    Zircon ages of granites occuring along the Central Swedish Gravity Low1996In: GFF, ISSN 1103-5897, E-ISSN 2000-0863, Vol. 118, no 4, p. 217-225Article in journal (Refereed)
    Abstract [en]

    Two major types of late Svecofennian granitoids occur in south central Sweden. Large homogeneous massifs of coarse-grained granite with trace element characteristics typical of granites formed in tensional settings occur along the Central Swedish Gravity Low (CSGL). The other type comprises smaller intrusions of irregular, heterogeneous, locally derived granites (IHLD granites). We present U-Pb zircon ages are presented of one IHLD granite and of three varieties of the homogeneous intrusions. The result for the IHLD granite is 1779+-8 Ma. One of the samples of the homogeneous type yielded an age of 1769.7 +- 3.4 Ma. The remaining two samples have heterogeneous zircon populations. The emplacement age of these rocks is bracketed by the intercept ages of 1770 +- 6 and 1779 +- 23 Ma.The overlapping ages of granite groups of different types show that different types of granites were formed contemporaneously in the same region as a result of melt formation at various depths and from various sources.

  • 62811.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Schöberg, Hans
    Character and U-Pb zircon age of the Proterozoic Ale granite, northern Sweden1991In: Geologiska föreningens i Stockholm förhandlingar, ISSN 0016-786X, Vol. 113, no 2-3, p. 105-112Article in journal (Refereed)
    Abstract [en]

    The Ale granite west of Lule in northern Sweden forms an irregular, almost elliptical exposure covering an area of roughly 30 by 15 km in size. The central part of the intrusion consists of a homgeneous, quartz- and microcline-rich porphyritic granite, whereas its marginal parts are made up of a heterogeneous granite slightly less rich in quartz. Pegmatites and aplites are common in the surroundings. Zircons from two samples, one from the central part of the Ale granite and one from the border zone, were dated at 1802±3 (2σ) Ma and 1796±2 (2σ) Ma, respectively, by using the U-Pb method. An analysis of Sm-Nd istopes of these samples gave initital Nd values of -5.2 and -3.2, respectively, indicating a significant contribution of Archaean crustal material. Thirteen samples were analysed for major and trace elements. The isotopic and geochemical results suggest that the Ale granite was formed in a compressional environment 1.80 Ga ago, and that mature sediments were not an important source material.

  • 62812.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Skiöld, T.
    Elming, Sten-åke
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Delineation and character of the Archaean-Proterozoic boundary in northern Sweden1993In: Vol. 5, no Suppl. 1, p. 320-321Article in journal (Other academic)
  • 62813.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Skiöld, T.
    Elming, Sten-åke
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Claesson, S.
    Nisca, D.H.
    Luleå tekniska universitet.
    Delineation and character of the Archaean-Proterozoic boundary in northern Sweden1993In: Precambrian Research, ISSN 0301-9268, E-ISSN 1872-7433, Vol. 64, no 1-4, p. 67-84Article in journal (Refereed)
    Abstract [en]

    Before the deposition of a Proterozoic cover and the repeated Proterozoic reworking of the older rocks, the presently exposed Archaean areas in northern Sweden formed part of a coherent craton. In the present study, we have used Sm---Nd isotopic analyses of Proterozoic granitoids and metavolcanics to delineate the Archaean palaeoboundary. In a regional context, the transition from strongly negative εNd(t) values in the northeast to positive values in the southwest is distinct, and approximately defines the border of the old craton. The Archaean palaeoboundary extends in a WNW direction, and is subparallel to the longitudinal axis of the Skellefte sulphide ore district but it is situated ≈ 100 km farther to the north. The ≈ 1.9 Ga old granitoids on the two sides of the palaeoboundary were all formed in compressional environments, but those situated to the north have higher contents of LILE and LREE at similar contents of Si. This indicates that they were generated in an area with thicker crust and supports the location of the Archaean-Proterozoic palaeoboundary. There is no simple correlation between the Archaean palaeoboundary, as defined by the isotopic results, and any of the major fracture systems as interpreted from regional geophysical measurements. Reflection seismic work indicates that juvenile volcanic-arc terrains to the south have been thrust onto the Archaean craton. Possible thrust faults have been identified from aeromagnetic measurements. Rifting of the Archaean craton created a passive margin ≈ 2.0 Ga ago. Spreading shifted to convergence with subduction beneath the Archaean continent ≈ 1.9 Ga ago. Subsequently, the resulting juvenile volcanic arc collided with the old continent, and the Archaean palaeoboundary as existing today was formed by a collision characterized by overthrusting. The boundary then was disturbed by later deformation predominantly along NNE-trending fracture systems.

  • 62814.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Skiöld, T.
    Laboratoriet för Isotopgeologi, Naturhistoriska Riksmuseet, Stockholm.
    Hamilton, P. J.
    IIsotope Geology Unit, Scottish Universities Research and Reactor Centre, East Kilbride, Glasgow.
    Claesson, L. Å.
    Swedish Geological Co..
    The western border of the Archaean province of the Baltic Shield: evidence from northern Sweden1987In: Contributions to Mineralogy and Petrology, ISSN 0010-7999, E-ISSN 1432-0967, Vol. 95, no 4, p. 437-450Article in journal (Refereed)
    Abstract [en]

    Restricted areas of acid to intermediate gneisses in northernmost Sweden are known to be Archaean and several other gneissic granodioritic to tonalitic massifs have been suggested to be of this age. To delimit the western border of the Archaean province of the Baltic Shield, and to characterize the Swedish Archaean, we have studied the 2.83 Ga old Soppero gneiss and 8 of the proposed Archaean massifs in northern Sweden by Sm-Nd isotopic analyses, U-Pb zircon dating (in two cases), and geochemistry. Of the Archaean gneisses proposed thus far, only those from the Soppero and Kukkola areas have Archaean ages (2.83 and 2.67 Ga, respectively). These gneisses have geochemical characteristics such as LREE-enrichment, low U-contents, and low K/Na-ratios, which are typical of Archaean TTG (tonalite-trondhjemite-granodiorite) rocks worldwide. The REE results indicate that the Soppero and the Kukkola gneisses were generated by partial melting of basic rocks, presumably amphibolites. According to the Sm-Nd isotopic data for the Soppero gneiss, this process occurred only a short time after initial segregation from the mantle (εNd values between +0.9 and +3.5). The Kukkola gneiss, however, has longer crustal residence time as indicated by negative εNd values (-1.0 and -2.5) at the U-Pb zircon age of 2.67 Ga. Evidence in support of an important event at that time is given by secondary overgrowth on zircon cores in the 2.83 Ga old Soppero gneiss. The Sm-Nd isotope results show that the Proterozoic granitoids in northern Sweden have a decreasing involvement of Archaean source material with increasing distance from the Archaean areas. Before the Proterozoic reworking, the rather small Archaean areas in northern Sweden presumably belonged to a large continuous Archaean craton. The western palaeoboundary of this craton in Sweden probably follows approximately a line extrapolated from the western limit of the Archaean of central Finland, passing west of Kukkola, and then continues to the Lofoten area in northern Norway.

  • 62815.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Skiöld, Torbjörn
    Contrasting 1.8 Ga granitoids in northern Sweden: the Edefors and Lina suites1993In: Abstracts of lectures and posters: 21:a Nordiska geologiska vintermötet 10-13 Januari 1994 Luleå / [ed] Jan-Anders Perdahl, Luleå: Högskolan i Luleå , 1993, p. 235-Conference paper (Other academic)
  • 62816.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Skiöld, Torbjörn
    Contrasting 1.8 Ga potassic granitoids in northern Sweden: the Edefors and Lina suites1996In: Jubilee issue: short papers and abstracts for the Jubilee meeting "Current problems, ideas and results in geology" : Stockholm 16th-18th October 1996 at the celebration of the 125th anniversary of the Geological society of Sweden / [ed] Björn Sundquist, Geologiska föreningen , 1996, p. 22-Conference paper (Other academic)
  • 62817.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Skiöld, Torbjörn
    Laboratory for Isotope Geology. Swedish Museum of Natural History, Stockholm.
    Diversity of 1.8 Ga potassic granitoids along the edge of the Archaean craton in northern Scandinavia: a result of melt formation at various depths and from various sources1994In: Lithos, ISSN 0024-4937, E-ISSN 1872-6143, Vol. 33, no 4, p. 265-283Article in journal (Refereed)
    Abstract [en]

    The edge of the Archaean craton in northern Scandinavia had been intensively reworked during the Svecofennian orogeny 1.93-1.86 Ga ago and was subsequently intruded by potassic granitoids of 1.79–1.80 Ga age. Despite similar or even identical ages and overlapping areas of occurrence, these rocks belong to two different groups, the Edefors and Lina granitoids, which have contrasting geochemistries and Sm---Nd isotopic characteristics. The Edefors granitoids range from syenites to granites, and are alkali-rich and distinctly metaluminous. They crystallized from dry magmas. This is indicated by the scarcity of pegmatites and aplites. The contacts to older rocks are often distinct, but gradual transitions to Lina-type granitoids are common. The Edefors granitoids have high contents of Zr but not of elements such as Y, REE, Ta and Nb, and have low Mg/Mg+Fe ratios. They also frequently have positive Eu anomalies, even in the quartz rich varieties. Initial εNd values range from −2.1 to +1.4, indicating that the Edefors granitoids were formed by the mixing of mantle-derived magmas and continental crustal materials. The amount of crustal component was probably less than 35% in most cases. The Lina granitoids are accompanied by abundant pegmatites and aplites. Ghost structures and remnants of country rock are common. True granites predominate, but also quartz monzonites occur. The content of HFS elements is low and the Mg/Mg+Fe ratios are higher than in the Edefors granitoids. Initial εNd values range from −9.3 to −3.7, reflecting a significant portion of Archaean Nd in the source materials. The Lina granitoids are largely the result of remobilisation of continental crust with a small input of juvenile material. However, the dominant source for these crustally derived granitoids are c. 1.9 Ga old granitoids. These carry a large proportion of Archaean Nd. The most probable environment of the formation of potassic migmatite granitoids, such as the Lina type, is a collision zone between two masses of felsic crust (e.g. arc-continent or continent-continent), but the details of such a collision in the Baltic Shield remain to evaluated. The formation of the Edefors granitoids could have been associated with an extensional zone developed due to delamination caused by separation of the down-dip oceanic lithosphere from the continental lithosphere.

  • 62818.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Skiöld, Torbjörn
    Diversity of approximately coeval 1.8 Ga granitoids in northern Sweden: a result of melt formation at various depths and from various sources1993In: Symposium on "The Svecofennian Domain": geological/geophysical aspects of the continental crust and annual meeting of IGCP-275. Abstract volume, 1993, p. 64-Conference paper (Other academic)
  • 62819.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Skiöld, Torbjörn
    Elming, Sten-åke
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    The Archaean-Proterozoic boundary in northern Sweden1992In: Abstracts Volume, IGCP 275 meeting Deep Geology of the Baltic Shield: Petrozavodsk September 15-17, 1992, 1992, p. 66-67Conference paper (Other academic)
  • 62820.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Skiöld, Torbjörn
    Nisca, Dan
    Delineation and origin of the Archaean-Proterozoic boundary in northern Sweden1990In: Abstracts: Second Symposium on the Baltic Shield with Workshop on Correlation with Laurentia, Lund, Sweden June 5-7, 1990, Lund: International Geological Correlation Programme , 1990, p. 69-Conference paper (Other academic)
  • 62821.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Thunberg, Jonas
    Luleå tekniska universitet.
    Land, Magnus
    Stockholm University.
    Höglund, Lars-Olof
    Kemakta Konsult AB.
    Han, Quishang
    Luleå tekniska universitet.
    Redistribution of trace metals in a mineralized spodosol due to weathering, Liikavaara, northern Sweden2003In: Applied Geochemistry, ISSN 0883-2927, E-ISSN 1872-9134, Vol. 18, no 6, p. 883-899Article in journal (Refereed)
    Abstract [en]

    The till east of the Liikavaara Östra ore deposit in northern Sweden is in some parts rich in Cu and other sulphide-associated metals. Groundwater flowing in this till has higher concentrations of Cu than groundwater in a reference area where the till has low concentrations of Cu and other metals. To understand the processes that release metals from the mineralized till at Liikavaara into the groundwater, the authors performed a detailed study of the <2 mm fraction of a till profile where the highest metal concentrations in the Liikavaara area occur. The geochemistry and mineralogy of the till were determined, and the soil water was sampled by tension lysimeters. The importance of local diffusion of Cu-bearing airborne dust from the adjacent Aitik mine tailings impoundment was quantified and solid speciation of metals in airborne material was performed by sequential extraction. The results from Liikavaara were compared to results from the reference area. Glacial ice picked up sulphide-rich material from the Liikavaara Östra Cu ore during its flow. This material was deposited in the till east of the ore body when the ice melted. The sulphides have been dissolved in the <2 mm fraction during 8.7 ka of weathering since the glacial ice retreated. After dissolution of the sulphides, Cu was redistributed and secondarily retained in association with Fe-oxyhydroxides and altered biotite. Other sulphide-associated elements such as Co, Ni and Zn show the same pattern in the till profile as Cu, though the concentrations are much lower. Uptake of Cu2+ in the biotite through ion exchange with K+ may be an important mechanism for Cu-enrichment in biotite at Liikavaara. The airborne dust is not the source of Cu in the till. Although the soil water at Liikavaara has higher concentrations of Cu and other metals than the soil water at the reference area, the Cu-concentration is too low for infiltrating soil water to explain the high Cu-concentrations observed in groundwater. The high metal concentrations in the till, of Cu in particular, cause the increased concentrations in the local groundwater. A fluctuating groundwater table washes out Cu and other metals from the till. It is possible that increased Cu concentration in the local groundwater is caused by dissolved organic complexes, or by colloids (<0.45 μm) rich in organic matter and/or Fe-oxyhydroxides

  • 62822.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Weihed, Pär
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Proterozoic mineralizations associated with granitoids in northern Sweden: Excursion guide no 71986In: 7th IAGOD symposium and Nordkalott project meeting / [ed] Ebbe Zachrisson, Sveriges Geologiska Undersökning , 1986Conference paper (Other academic)
  • 62823.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Widerlund, Anders
    Holmström, Henning
    Ingri, Johan
    MiMi – Field studies and characterisation: state-of-the-art-report1998Report (Other academic)
  • 62824.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Zuber, Josef
    Aspects of the formation of the 1.80-1.77 Ga old granitoids in south-central Sweden1990In: Vol. 112, no 2, p. 189-190Article in journal (Other academic)
  • 62825.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Zuber, Josef
    Luleå University of Technology.
    Genesis of the Fellingsbro-type granites: evidence from gravity measurements and geochemistry1988In: Geologiska föreningens i Stockholm förhandlingar, ISSN 0016-786X, Vol. 110, no 1, p. 39-54Article in journal (Refereed)
    Abstract [en]

    The Fellingsbro granite sensu stricto is a porphyritic coarse-grained rock characterized by red angular microcline megacrysts. Samples of the Fellingsbro and the similar Lisjö granite have been analysed chemically. Both intrusions belong to a belt of ca. 1.78 Ga old granites which coincides with a major negative gravity anomaly, the so called Central Swedish Gravity Low. We have carried out gravity measurements and obtained a fairly dense regional gravity network from the Fellingsbro area to Västerås. In addition, an approx. 60km long profile with gravity stations approx. 200m apart was measured across the Lisjö granite. The porphyritic Fellingsbro and Lisjö granites were generated in a tensional environment. They rose from a huge granite ridge through structurally controlled root zones, flowed out and formed mushroom-shaped intrusions. Even-grained grained granites occurring in the Fellingsbro and Lisjö areas were generated through a mixing between the original granitic magma and locally remobilized country rocks. The porphyritic granites are of the same age and have similar geochemical and geophysical properties as the Småland-Värmland granites. Both groups were probably generated in a tensional environment on the continental side of a major subduction-related calc-alkaline belt; remnants of which may be preserved in the Southwest Swedish Gneiss region. The Lisjö and Fellingsbro granites were generated more towards the interior of the pre-existing ca 1.9 Ga old continent.

  • 62826.
    Öhlander, Björn
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Zuber, Josef
    Luleå University of Technology.
    Geochemistry of the fellingsbro type granites, south central Sweden1988In: Geologie & Mijnbouw, ISSN 0016-7746, E-ISSN 1573-9708, Vol. 67, no 2-4, p. 213-225Article in journal (Refereed)
    Abstract [en]

    The Fellingsbro granite sensu stricto is a massive coarse-grained rock characterized by red, angular microcline megacrysts up to 7 cm long. The Lisjo granite is of the same type as the Fellingsbro granite but is situated 20 km to the NE. Gravity studies suggest that the Fellingsbro and Lisjo granites rose from a huge granite ridge through structuraly controlled root zones, forming mushroom-shaped intrusions. These porphyritic granites have the geochemical characteristics (eg high Y, Nb, Zr and HREE) of granites generated as "within-plate' or tensional rifting environments. The even-grained interior of the Lisjo granite and the contemporaneous Dingtuna and Pingstaberg granites, were generated by differentiation of granites with similar characteristics as the porphyritic Fellingsbro granite. Recently published U-Pb zircon datings have demonstrated that the Smaland-Varmland granite-porphyry Belt has approximately the same age as the granites in this study. We speculate that both groups were emplaced in a tensional environment on the continental side of a subduction related calc-alkaline belt, remnants of which may be preserved in the SW Swedish Gneiss Region.

  • 62827.
    Öhlin, Emil
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Industrilized and sustainable construction.
    Höghusbyggande med korslaminerade träskivor2016Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Historicly speaking wood is our moste important building material and it’s usage streches far back in time. Todyay it’s low density makes it possible to prefabricate whole wood bodies in factories that are later shiped out to building sites where they can be asembled. To meet the requierments of todays housing market, Lindbäcks Bygg AB has started a project where a 14-stories house is the be developed. To build on the height is a necessity due to rising land prices and the land has to be used mor efficient. A build of this high put a great demand on the constructual soulution in order for the wood body to withstand high columnloads on the lower flear, while it is stable enough to withstand the wind.

    The purpose of this report is to show you a possible way of constructing a 42 m high 14-stories hos usinga cross laminated timber(CLT). For the calculation a preliminary floor used, that has not been entirely completed. This gives the calcultations and arbitrary soulution that can work for similar buildings with varying floor plans. For this reason utilization of the CLT is a bit lower than what is otherwise wanted for cost optimization.

    In order to wind stabilize the building two differet methods are beging evaluated. In the first one the stabilazation is acheived by stairwells made of concrete In the other one it’s acheived by using 120 mm thick CLT-panels. In both cases the CLT is supporting the vertikal loads that are acting on each floor. On every fifht floor concrete slabs are placed of which the task is to miminize the load effect on the weaker parts of the body.

    By using composit theory according to (Blass & Fellmoser, 2004), the CLT-panels are controlled if they are in risk form shear, deformation or compression. The CLT-panel can be concidered as gluam wood, GL28h if it consists of C24 timber, which  this report is based on. Since the CLT panel is concidered as a solid element it experienced a reduced compressive and lifting forces, that it would otherwise if it was mad by a column system. The calculations shows that the CLT is strong enogugh to withstand the compressive and horisontal forces that is acting on them. When the building is stabilized using a concrete stairwell, this leads to and horisontal load that the concrete needs to be strong enough to withstand.

    The result shows that when concidering static loads, it is possible to construct a 14-stories building wtih a CLT-body that meets the requirements of Eurocode. However, when the building is stabilized with concrete towers it generates a load on against the stairwells. It has not been investigated whether or not the concrete is strong enough to withstand this load.

  • 62828. Öhlin, Fredrik
    Framtagning av ett lyftdonskoncept: I samverkan med ett svenskt industriföretag2015Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 62829. Öhlund, Andreas
    Omvärldsanalys inom småföretag: en studie av småföretag inom turismnäringen2004Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 62830. Öhlund, Anna-Maj
    Kan isokinetisk styrketräning förbättra gång/balansförmåga och muskelfunktion hos en kronisk strokepatient?: en single subject experimental design studie2004Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 62831. Öhlund, Daniel
    Net Devil - an IP-disturbance tool2004Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis presents the devolvement of a network emulator. The emulator, Net Devil is aimed for the telecom sector in order to resemble live networks in test labs by intercepting packets and applying rules to them. Rules such as drop, delay and discard packets can be set by the user. In order for the emulator to control all types of network traffic it is developed as a generic tool allowing the user to intercept packets with fine granularity. Furthermore the thesis presents the evolution of cellular networks, different network characteristics are discussed in order to understand why IP-traffic over these networks is more prune to errors than the wired counterpart. The thesis shows that it is possible to use an emulator tool in order to impair the network traffic in a controlled way without extensive overhead. Furthermore the use of a tool like the Net Devil might have other areas of use when it comes to network monitoring and development.

  • 62832. Öhlund, Elida
    Den stora stygga vargen och de tre björnarna: Medias framställning av varg och björn samt dess konsekvenser för rovdjurspolitiken och rovdjursförvaltningens legitimitet.2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 62833. Öhlund, Greger
    Flimmer inriktad på störning mellan dimmer och långsam elnätskommunikation2006Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 62834. Öhlund, Gunnar
    Tillsatsmaterial för lagning av trä1998Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
  • 62835. Öhlund, Jonas
    Anpassning av bithastighet för mobil video2010Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The last few years mobile devices have become more and more powerful and with larger and more colorful displays. This has paved the way for delivering high video quality forthese devices. Every year each of the big mobile manufacturers, Samsung, Sony, HTC and so on, release numerous devices - each with different technical specifications. Some of them follows most of the standards, most of them follows some of the standards. This never ending flow of new devices with varying amount of standards followed combines to fragmenting the market in a way that makes it extremely difficult to support different devices when developing mobile clients or mobile web sites. This fragmentation also makes it diffcult to deliver the best possible video quality to each individual device. This thesis proposes a way of combined approaches to find out the available bandwidth for a specific device, and thus be able to adapt the video bit-rate. The different techniques which winded up in the final solutions consists of values found in HTTP headers as well as values parsed from a User-Agent Profile of a device, but also of more protocol specific solutions: iPhone Live Streaming, MBR ASF and a modification to Darwin Streaming Server. As a final fallback a small sample image was downloaded before the video was requested to provide an approximate measurement of the available bandwidth. The solution proposed in this thesis covers three delivery methods used; MMS, RTSP and progressive download. A switch in bit-rate will not happen in all cases, however, the solution will improve the user experience for many users.

  • 62836. Öhlund, Jonthan
    L-systems och Varierande Växt Hastigheter2015Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This report presents the implementation of some of the parts of the L-system framework as presented in the book, The Algorithmic Beauty of Plants, and how L-systems can be used to generate tree like structures. It also presents the results of a small experiment trying to dynamically modify parts of the L-system while the simulation is running. The simulation was made as a tamagotchi like application, but the user takes care of a tree instead of an animal. At the end of the report, future work for the presented material is presented.

  • 62837. Öhlund, Maria
    Underhåll av statligt förvaltade renskötselanläggningar i Norrbottens län2003Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 62838. Öhlund, Peter
    Problem och funktion hos gemensam litteraturläsning och litteratursamtal2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 62839. Öhlund, Peter
    Webbsidan som kommunikationskanal: fallstudier av två företag i Norrbotten2001Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 62840.
    Öhlén, Joakim
    et al.
    Institute of Health and Care Sciences, Sahlgrenska Academy at the University of Gothenburg.
    Berg, Linda
    Institute of Health and Care Sciences, Sahlgrenska Academy at the University of Gothenburg.
    Brämberg, Elisabeth Björk
    Engström, Åsa
    Luleå University of Technology, Department of Health Sciences, Nursing Care.
    German-Millberg, Lena
    Faculty of Social and Life Sciences, Department of Nursing, Karlstad University.
    Höglund, Ingela
    Jacobsson, Catrine
    Lepp, Margret
    Institute of Health and Care Sciences, Sahlgrenska Academy at the University of Gothenburg.
    Lindén, Eva
    Institute of Health and Care Sciences, Sahlgrenska Academy at the University of Gothenburg.
    Lindström, Irma
    Institute of Health and Care Sciences, Sahlgrenska Academy at the University of Gothenburg.
    Petzäll, Kerstin
    Faculty of Social and Life Sciences, Department of Nursing, Karlstad University.
    Söderberg, Siv
    Luleå University of Technology, Department of Health Sciences, Nursing Care.
    Wijk, Helle
    Institute of Health and Care Sciences, Sahlgrenska Academy at the University of Gothenburg.
    Students' learning as the focus for shared involvement between universities and clinical practice: a didactic model for postgraduate degree projects2012In: Advances in Health Sciences Education, ISSN 1382-4996, E-ISSN 1573-1677, Vol. 17, no 4, p. 471-487Article in journal (Refereed)
    Abstract [en]

    In an academic programme, completion of a postgraduate degree project couldbe a significant means of promoting student learning in evidence- and experience-basedpractice. In specialist nursing education, which through the European Bologna processwould be raised to the master’s level, there is no tradition of including a postgraduatedegree project. The aim was to develop a didactic model for specialist nursing students’postgraduate degree projects within the second cycle of higher education (master’s level)and with a specific focus on nurturing shared involvement between universities andhealthcare settings. This study embodies a participatory action research and theory-generatingdesign founded on empirically practical try-outs. The 3-year project included fiveSwedish universities and related healthcare settings. A series of activities was performedand a number of data sources secured. Constant comparative analysis was applied. Adidactic model is proposed for postgraduate degree projects in specialist nursing educationaimed at nurturing shared involvement between universities and healthcare settings. Thefocus of the model is student learning in order to prepare the students for participation asspecialist nurses in clinical knowledge development. The model is developed for the specialist nursing education, but it is general and could be applicable to various educationprogrammes.

  • 62841.
    Öhlén, Joakim
    et al.
    Palliative Research Centre, Ersta Sköndal University College and Ersta Hospital, Stockholm.
    Ekman, Inger
    Institute of Health and Care Sciences, Sahlgrenska Academy at the University of Gothenburg.
    Bolmsjö, Ingrid
    Department of Care Science, Malmö University.
    Zingmark, Karin
    Luleå University of Technology, Department of Health Sciences, Nursing Care.
    Benzein, Eva
    Department of Health and Caring Sciences, Linnæus University, Kalmar.
    Conceptual development of "at-homeness" despite illness and disease: a review2014In: International Journal of Qualitative Studies on Health and Well-being, ISSN 1748-2623, E-ISSN 1748-2631, Vol. 9, article id 23677Article in journal (Refereed)
    Abstract [en]

    Only one empirical study, the one by Zingmark, Norberg and Sandman published in 1995, explicitly focuses on at-homeness, the feeling of being metaphorically at-home, as a particular aspect of wellness. However, other studies reveal aspects of at-homeness, but if or how such aspects of at-homeness are related to each other is unclear. For this reason, the aim was to review Scandinavian nursing research related to at-homeness in the context of wellness-illness in severe and long-term conditions in order to take a step towards conceptual clarification of "at-homeness." The review included interpretive studies related to severe and long-term illness conducted in Sweden: 10 original articles and 5 doctoral theses. "At-homeness" was found to be a contextually related meaning of wellness despite illness and disease embedded in the continuum of being metaphorically at-home and metaphorically homeless. This was characterized by three interrelated aspects and four processes: being safe through expanding-limiting experiences of illness and time, being connected through reunifying-detaching ways of relating, and being centred through recognition-non-recognition of oneself in the experience and others giving-withdrawing a place for oneself. This conceptualization is to be regarded as a step in conceptual clarification. Further empirical investigation and theoretical development of "at-homeness" are needed. The conceptualization will be a step of plausible significance for the evaluation of interventions aimed at enhancing wellness for people with severe long-term illness, such as the frail elderly, and people with chronic illness or palliative care needs.

  • 62842.
    Öhlén, Sandra
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences.
    Attityder och intentioner till minskad köttkonsumtion: En applikation av Theory of Planned Behavior och rättfärdiganden2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis explores university students' intentions toward reduced meat consumption. Icek Ajzen's Theory of Planned Behavior (TPB), which indicates that conscious intentions are determined by the individual's attitudes, subjective norms and perceived behavioral control, was used in the construction of an electronic questionnaire answered by 200 students. Justification was introduced as a factor in addition to the TPB, in order to investigate the relationship between justification and the other factors. The results show that TPB was an applicable tool to explain intentions toward reduced meat consumption and that attitude was the most important predictor of intention, followed by subjective norm. Perceived behavioral control and justification made no significant contributions to explain intention. There were significant differences between men's and women's attitudes and intentions toward reduced meat consumption. The role of justifications in relation to the other factors is discussed.

  • 62843.
    Öhman, Anders
    Luleå University of Technology, Department of Arts, Communication and Education, Education, Language, and Teaching.
    Att pröva bilderna: vadan och varthän2008In: Våra favoriter bland Viktor Rydbergs dikter, Lund: Absalon förlag , 2008, p. 57-63Chapter in book (Other academic)
  • 62844.
    Öhman, Anders
    Luleå University of Technology, Department of Arts, Communication and Education, Education, Language, and Teaching.
    "Att sjunga opp landet" - Norrland och gestaltningsproblemet2010In: Regionernas bilder: Estetiska uttryck från och om periferin, Umeå, 2010, p. 29-38Chapter in book (Other academic)
  • 62845.
    Öhman, Anders
    Luleå University of Technology, Department of Arts, Communication and Education, Education, Language, and Teaching.
    August Strindbergs "En dåres försvarstal" och den självbiografiska romanen2005In: Det moderna genombrottets prosa, Lund: Studentlitteratur AB, 2005, p. 59-80Chapter in book (Other academic)
  • 62846.
    Öhman, Anders
    Luleå University of Technology, Department of Arts, Communication and Education, Education, Language, and Teaching.
    Berättelserna och populärkulturen2008In: Ungdomskulturer – äger eller suger?: möjliga möten inom svenskämnet, Stockholm: Svensklärarföreningen , 2008, p. 93-107Chapter in book (Other academic)
  • 62847.
    Öhman, Anders
    Luleå University of Technology, Department of Arts, Communication and Education, Education, Language, and Teaching.
    Bilden och rummet: reflexioner över Michail Bachtins kronotop-begrepp2006In: Dialogens tenker: nordiske perspektiver på Bakhtin, Oslo: Spartacus forlag , 2006, p. 169-177Chapter in book (Other academic)
  • 62848.
    Öhman, Anders
    Luleå University of Technology, Department of Arts, Communication and Education, Education, Language, and Teaching.
    Biologisk fartblindhet2008In: Dagens Nyheter, ISSN 1101-2447Article in journal (Other (popular science, discussion, etc.))
  • 62849.
    Öhman, Anders
    Luleå University of Technology, Department of Arts, Communication and Education, Education, Language, and Teaching.
    Craig Venter, genomet och skrivandet av livet2008In: Genus i norrsken, ISSN 1654-7640, Vol. 1, no 3-4, p. 19-22Article in journal (Other academic)
  • 62850.
    Öhman, Anders
    Luleå University of Technology, Department of Arts, Communication and Education, Education, Language, and Teaching.
    De förskingrade: Norrland, moderniteten och Gustav Hedenvind-Eriksson2004Book (Other academic)
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