| 1. |
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| 2. |
- Arkitektur & teknik 2020/21, Årskurs 3, et al.
(författare)
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Resedagbok Schweiz augusti 2021
- 2021
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Arkitektur och tekniks årliga studieresa till Schweiz är på många sätt unik. Vi transporterar oss själva genom det vackra alplandskapet och besöker några av landets vackraste broar och byggnader. De vilda bergsmassiven och den förfinade byggnadskulturen väver sig in i varandra under hela vår magiska arkitektursafari. Resan i augusti 2021 blev nästan ett år försenad på grund av pandemin. I stället för en förberedelse av studierna i årskurs 3 blev det en festlig avslutning på kandidattiden på Chalmers. Vid sidan om våra gängse besöksmål, från Robert Maillarts och Jürg Conzetts konstruktioner till Le Corbusier och Peter Zumthors arkitektur, hade vi den här resan ett särskilt fokus på materialen lera, kalk, sten och cement, och på restaurering av broar och byggnader i dessa material.
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| 3. |
- Baison, J., et al.
(författare)
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Genetic control of tracheid properties in Norway spruce wood
- 2020
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Ingår i: Scientific Reports. - : Nature Research. - 2045-2322. ; 10:1
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Tidskriftsartikel (refereegranskat)abstract
- Through the use of genome-wide association studies (GWAS) mapping it is possible to establish the genetic basis of phenotypic trait variation. Our GWAS study presents the first such effort in Norway spruce (Picea abies (L). Karst.) for the traits related to wood tracheid characteristics. The study employed an exome capture genotyping approach that generated 178 101 Single Nucleotide Polymorphisms (SNPs) from 40 018 probes within a population of 517 Norway spruce mother trees. We applied a least absolute shrinkage and selection operator (LASSO) based association mapping method using a functional multi-locus mapping approach, with a stability selection probability method as the hypothesis testing approach to determine significant Quantitative Trait Loci (QTLs). The analysis has provided 30 significant associations, the majority of which show specific expression in wood-forming tissues or high ubiquitous expression, potentially controlling tracheids dimensions, their cell wall thickness and microfibril angle. Among the most promising candidates based on our results and prior information for other species are: Picea abies BIG GRAIN 2 (PabBG2) with a predicted function in auxin transport and sensitivity, and MA_373300g0010 encoding a protein similar to wall-associated receptor kinases, which were both associated with cell wall thickness. The results demonstrate feasibility of GWAS to identify novel candidate genes controlling industrially-relevant tracheid traits in Norway spruce. © 2020, The Author(s).
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| 4. |
- Baison, John, et al.
(författare)
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Genome-Wide Association Study (GWAS) identified novel candidate loci affecting wood formation in Norway spruce
- 2019
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Ingår i: The Plant Journal. - : Wiley. - 0960-7412 .- 1365-313X. ; 100:1, s. 83-100
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Tidskriftsartikel (refereegranskat)abstract
- Norway spruce is a boreal forest tree species of significant ecological and economic importance. Hence there is a strong imperative to dissect the genetics underlying important wood quality traits in the species. We performed a functional Genome-Wide Association Study (GWAS) of 17 wood traits in Norway spruce using 178101 single-nucleotide polymorphisms (SNPs) generated from exome genotyping of 517 mother trees. The wood traits were defined using functional modelling of wood properties across annual growth rings.We applied a LASSO based association mapping method using a functional multi-locus mapping approach that utilizes latent traits, with a stability selection probability method as the hypothesis testing approach to determine significant Quantitative Trait Loci (QTLs). The analysis provided 52 significant SNPs from 39 candidate genes, including genes previously implicated in wood formation and tree growth in spruce and other species. Our study represents a multi-locus GWAS for complex wood traits in Norway spruce. The results advance our understanding of the genetics influencing wood traits and identifies candidate genes for future functional studies.
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| 5. |
- Baison, John, et al.
(författare)
-
Genome-wide association study identified novel candidate loci affecting wood formation in Norway spruce
- 2019
-
Ingår i: The Plant Journal. - : John Wiley & Sons. - 0960-7412 .- 1365-313X. ; 100:1, s. 83-100
-
Tidskriftsartikel (refereegranskat)abstract
- Norway spruce is a boreal forest tree species of significant ecological and economic importance. Hence there is a strong imperative to dissect the genetics underlying important wood quality traits in the species. We performed a functional genome-wide association study (GWAS) of 17 wood traits in Norway spruce using 178 101 single nucleotide polymorphisms (SNPs) generated from exome genotyping of 517 mother trees. The wood traits were defined using functional modelling of wood properties across annual growth rings. We applied a Least Absolute Shrinkage and Selection Operator (LASSO-based) association mapping method using a functional multilocus mapping approach that utilizes latent traits, with a stability selection probability method as the hypothesis testing approach to determine a significant quantitative trait locus. The analysis provided 52 significant SNPs from 39 candidate genes, including genes previously implicated in wood formation and tree growth in spruce and other species. Our study represents a multilocus GWAS for complex wood traits in Norway spruce. The results advance our understanding of the genetics influencing wood traits and identifies candidate genes for future functional studies.
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| 6. |
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| 7. |
- Chen, Zhiqiang, et al.
(författare)
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Inheritance of growth and solid wood quality traits in a large Norway spruce population tested at two locations in southern Sweden
- 2014
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Ingår i: Tree Genetics & Genomes. - : Springer Science and Business Media LLC. - 1614-2942 .- 1614-2950. ; 10:5, s. 1291-1303
-
Tidskriftsartikel (refereegranskat)abstract
- Unfavorable genetic correlations between growth and wood quality traits are one of the biggest challenges in advanced conifer breeding programs. To examine and deal with such correlation, increment cores were sampled at breast height from 5,618 trees in 524 open-pollinated families in two 21-year-old Norway spruce progeny trials in southern Sweden, and age trends of genetic variation, genetic correlation, and efficiency of selection were investigated. Wood quality traits were measured on 12-mm increment cores using SilviScan. Heritability was moderate (~0.4-0.5) for wood density and modulus of elasticity (MOE) but low (~0.2) for microfibril angle (MFA). Different age trends were observed for wood density, MFA, and MOE, and the lower heritability of MFA relative to wood density and MOE in Norway spruce contrasted with general trends of the three wood quality traits in pine. Genetic correlations among growth, wood density, MFA, and MOE increased to a considerably high value from pith to bark with unfavorable genetic correlations (−0.6 between growth and wood density, −0.74 between growth and MOE). Age-age genetic correlations reached 0.9 after ring 4 for diameter at breast height (DBH), wood density, MFA, and MOE traits. Early selections at ring 10 for diameter and at ring 6 or 7 for wood quality traits had similar effectiveness as selection conducted at reference ring 15. Selection based on diameter alone produced 19.0 % genetic gain in diameter but resulted in 4.8 % decrease in wood density, 9.4 % decrease in MOE, and 8.0 % increase in MFA. Index selection with a restriction of no change in wood density, MOE, and MFA, respectively, produced relatively lower genetic gains in diameter (16.4, 12.2, and 14.1 %, respectively), indicating such index selection could be implemented to maintain current wood density. Index selection using economic weights is, however, recommended for maximum economic efficiency
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| 8. |
- Chen, Zhi-Qiang, et al.
(författare)
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Estimating solid wood properties using Pilodyn and acoustic velocity on standing trees of Norway spruce
- 2015
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Ingår i: Annals of Forest Science. - : Springer Science and Business Media LLC. - 1286-4560 .- 1297-966X. ; 72:4, s. 499-508
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Tidskriftsartikel (refereegranskat)abstract
- Key message: Strong genetic correlations were observed between Pilodyn measurement and wood density, and between acoustic velocity and MFA. Combination of Pilodyn penetration and acoustic velocity measurements from standing trees can provide reliable prediction of stiffness of Norway spruce for breeding selection.Context: Traditional methods for the estimation of solid wood quality traits of standing tree such as wood density, microfibril angle (MFA), and modulus of elasticity (MOE) are time-consuming and expensive, which render them unsuitable for rapidly screening a large number of trees in tree breeding programs.Aim: This study aims to evaluate the suitability of using Pilodyn penetration and acoustic velocity (nondestructive evaluation) to assess wood density, MFA, and MOE for Norway spruce.Methods: Pilodyn penetration and Hitman acoustic velocity, as well as wood density, MFA, and MOE using benchmark SilviScan were measured on 5618 standing trees of 524 open-pollinated families in two 21-year-old Norway spruce (Picea abies) progeny trials in southern Sweden.Results: Strong genetic correlations were observed between Pilodyn measurement and wood density (rg = −0.96), and between acoustic velocity and MFA (rg = −0.94). Combination of Pilodyn penetration and Hitman acoustic velocity measurements (Formula presented.) obtained from standing trees showed a genetic correlation with benchmark MOE of 0.99. This combined MOE(Formula presented.) had higher selection efficiency for benchmark MOE (92 %) compared to 58–60 % using acoustic velocity alone and 78 % using Pilodyn penetration alone.Conclusion: Combination of Pilodyn penetration with Hitman acoustic velocity provided very high selection efficiency for the three most important quality traits for wood mechanical properties in Norway spruce.
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| 9. |
- Chen, Zhi-Qiang, et al.
(författare)
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Genetic analysis of fiber dimensions and their correlation with stem diameter and solid-wood properties in Norway spruce
- 2016
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Ingår i: Tree Genetics & Genomes. - : Springer Science and Business Media LLC. - 1614-2942 .- 1614-2950. ; 12:6
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Tidskriftsartikel (refereegranskat)abstract
- Adverse genetic correlations between growth traits and solid-wood, as well as fiber traits are a concern in conifer breeding programs. To evaluate the impact of selection for growth and solid-wood properties on fiber dimensions, we investigated the inheritance and efficiency of early selection for different wood-fiber traits and their correlations with stem diameter, wood density, modulus of elasticity (MOE), and microfibril angle (MFA) in Norway spruce (Picea abies L). The study was based on two large open-pollinated progeny trials established in southern Sweden in 1990 with material from 524 families comprising 5618 trees. Two increment cores were sampled from each tree. Radial variations from pith to bark were determined for rings 3–15 with SilviScan for fiber widths in the radial (RFW) and tangential (TFW) direction, fiber wall thickness (FWT), and fiber coarseness (FC). Fiber length (FL) was determined for rings 8–11. Heritabilities based on rings 8–11 using joint-site data were moderate to high (0.24–0.51) for all fiber-dimension traits. Heritabilities based on stem cross-sectional averages varied from 0.34 to 0.48 and reached a plateau at rings 6–9. The “age-age†genetic correlations for RFW, TFW, FWT, and FC cross-sectional averages at a particular age with cross-sectional averages at ring 15 reached 0.9 at rings 4–7. Our results indicated a moderate to high positive genetic correlation for density and MOE with FC and FWT, moderate and negative with RFW, and low with TFW and FL. Comparison of several selection scenarios indicated that the highest profitability is reached when diameter and MOE are considered jointly, in which case, the effect on any fiber dimension is negligible. Early selection was highly efficient from ring 5 for RFW and from rings 8–10 for TFW, FWT, and FC.
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| 10. |
- Kander, Astrid, et al.
(författare)
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Teknisk förändring och energiintensitet
- 2002
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Ingår i: Miljö-ekonomi-historia (Forskning i Halmstad, nr 6). ; , s. 49-60
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 11. |
- Kjellén, Elisabeth, et al.
(författare)
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A Phase I/II Evaluation of Metoclopramide as a Radiosensitiser in Patients with Inoperable Squamous Cell Carcinoma of the Lung
- 1995
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Ingår i: European Journal of Cancer. - : Elsevier BV. - 1879-0852 .- 0959-8049. ; 31:13-14, s. 2196-2202
-
Tidskriftsartikel (refereegranskat)abstract
- The feasibility of administering metoclopramide (MCA) as a radiosensitizer has been evaluated in 23 patients with a pathological or cytological diagnosis of a squamous cell carcinoma of the lung, clinically evaluated as inoperable. All patients received 40-60 Gy radiotherapy fractionated into 1.8 Gy fractions 5 times per week (Monday-Friday). Two MCA treatment regimens were used: (i) MCA at 2 mg/kg administered by intravenous infusion 1-2 h prior to radiotherapy 3 times per week (Monday, Wednesday, Friday); and (ii) MCA at 1 mg/kg administered by intravenous infusion 1-2 h prior to radiotherapy 5 times per week (Monday-Friday). 11 of the 23 patients treated with radiotherapy and MCA had none to mild pneumonitis or fibrosis and another 8 of the 23 had moderate levels. No patient had their therapy interrupted due to radiation-related side-effects. The MCA-related side-effects were as expected, i.e. 78% of the patients experienced sedation/tiredness and 48% expressed restlessness/anxiety symptoms. Both the total dose and serum levels of MCA were significantly associated to the MCA side-effect profile. Tumour response, duration of tumour response and survival were significantly positively correlated to the total and weekly doses of MCA administered to the patients during their radiotherapy treatment. These favourable phase II data have justified the initiation of a phase II/III randomised multicentred trial being carried out in Europe to evaluate MCA as a radiosensitiser.
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| 12. |
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| 13. |
- Lindmark, Magnus, 1967-, et al.
(författare)
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Miljö-ekonomi-historia
- 2002
-
Bok (populärvet., debatt m.m.)abstract
- Den ökade miljömedevetenheten under de senaste decennierna har skapat allt större intresse för historiska förlopp. Miljön påverkas och förändras ju gradvis och långsiktigt och verkningarna av mänsklig verksamhet kan i naturen i vissa fall spåras först århundraden senare. Denna påverkan kan bli kostsam att ställa till rätta - i vissa fall uppkommer kanske irreparabla skador. Ekonomisk förändring skapar således spänningsförhållanden mellan samhälle och miljö. Vid alla förändringsprocesser krävs tillförsel av energi och materia av högre kvalitet från ett omgivande system. Under senare år har alltfler forskare inom ämnet ekonomisk historia engagerat sig i studier av miljön. Den ena, makronivån, används t ex i skapandet av miljörelaterade historiska nationalräkenskaper och den andra, mikronivån, i studier av utnyttjandet av naturresurser som jord, skog, vatten och mineraler. Denna skrift utgör den första samlade rapporten från "MESK", "Miljöperspektiv i ekonomisk-historisk forskning", ett nätverks- och samarbetsprojekt, som sedan 1997 bedrivs vid de svenska ekonomisk-historiska institutionerna. Skriften innehåller undersökningar beträffande båda nivåerna. Av några av bidragen framgår också det nära samarbete med andra ämnen som kulturgeografi och biologi med flera, vilket är oundgängligt för att komma längre i förståelse av det problemkomplex som frågorna om vår miljö utgör.
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| 14. |
- Lundqvist, Sven- Olof, et al.
(författare)
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Age and weather effects on between and within ring variations of number, width and coarseness of tracheids and radial growth of young Norway spruce
- 2018
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Ingår i: European Journal of Forest Research. - : Springer Science and Business Media LLC. - 1612-4669 .- 1612-4677. ; 137:5, s. 719-743
-
Tidskriftsartikel (refereegranskat)abstract
- Annual growth, fibre and wood properties of Norway spruce are all under strong influence from genetics, age and weather. They change dynamically, particularly at young ages. Most genetic research and tree improvement programs are based on data from this most dynamic phase of the life of trees, affected by differences in weather among sites and years. In the work presented, influences of age and weather were investigated and modelled at the detail of annual rings and at the sub-tree ring level of earlywood, transitionwood and latewood. The data used were analysed from increment cores sampled at age 21Â years from almost 6000 Norway spruce trees of known genetic origin, grown on two sites in southern Sweden. The traits under investigation were radial growth, cell widths, cell numbers, cell wall thickness and coarseness as a measure of biomass allocation at cell level. General additive mixed models (GAMMs) were fitted to model the influences of age, local temperature and precipitation. The best models were obtained for number of tracheids formed per year, ring width, average radial tracheid width in earlywood, and ring averages for tangential tracheid width and coarseness. Considering the many sources behind the huge variation, the explained part of the variability was high. For all traits, models were developed using both total tree age and cambial age (ring number) to express age. Comparisons indicate that the number of cell divisions and ring width are under stronger control of tree age, but the other traits under stronger control of cambial age. The models provide a basis to refine data prior to genetic evaluations by compensating for estimated differences between sites and years related to age and weather rather than genetics. Other expected applications are to predict performance of genotypes in relation to site or climate and simulation of climate change scenarios.
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| 15. |
- Lundqvist, Sven-Olof, et al.
(författare)
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Comparison of wood, fibre and vessel properties of drought-tolerant eucalypts in South Africa
- 2017
-
Ingår i: Southern Forests, a journal of forest science. - : National Inquiry Services Center (NISC). - 2070-2620 .- 2070-2639. ; 79:3, s. 215-223
-
Tidskriftsartikel (refereegranskat)abstract
- Three drought-tolerant eucalypt genotypes have been investigated for a broad spectrum of properties to provide a basis for comparison on their suitability for various end-uses. The genotypes included were a Eucalyptus grandis × E. camaldulensis hybrid, E. gomphocephala and E. cladocalyx, selected based on previous studies that indicated good potential to tolerate arid conditions, reasonably good volume growth and straightness of stems. In this study, information was added on differences between species and parts of stems in growth (volume and biomass) and properties of wood (density and stiffness), fibres (dimensions and microfibril angle) and vessels (size and numbers). We found high wood densities and stiffness values for E. cladocalyx and E. gomphcephala, making them suitable for construction wood. Logs from the mid-part of the stem had the best timber properties, as the butt logs showed the highest microfibril angle and lowest wood stiffness due to longitudinal juvenility. Such juvenility was also to some degree observed for wood density and fibre length. The information gained will be especially helpful for selecting species and processing options for small farm and community plantations for producing higher-value products that may be sold to generate much-needed income as well as for local uses, such as fuelwood and charcoal. © 2017 The Authors
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| 16. |
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Managing Crises and De-Globalisation : Nordic Foreign Trade and Exchange, 1919-1939
- 2010
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Samlingsverk (redaktörskap) (övrigt vetenskapligt/konstnärligt)abstract
- As small, open economies the Nordic states have always been more dependent on foreign trade than larger powers, and have thus had a historic preference for free trade. But during the inter-war period the Nordic countries were squeezed between powerful and aggressive trading partners: above all Great Britain and Germany. Although the period between the end of the First World War and 1929 was marked by a return to a liberal world economy, the Great Depression ushered in a decade of protectionism. The bilateralisation of international trade was especially evident after Britain's Ottawa treaties in 1932 and the Nazi seizure of power in 1933. Their dependence on trade with Britain and Germany meant that the Nordic countries were exposed to the full force of British and German bilateralism.The paradox is that in spite of international trade wars and regulated exchange the Nordic countries managed better than other European states during the interwar period, and that the Great Depression was not as deep or long lasting as in other countries. The chapters in this book discuss why and how this rather successful Nordic experience was achieved. The topics covered include commercial and monetary policies but also important industries such as forestry, agriculture and fishing. Many of the chapters are comparative and discuss economic developments in two or more Nordic countries.
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| 17. |
- Nordlund, Therese, 1976-
(författare)
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Att leda storföretag : En studie av social kompetens och entreprenörskap i näringslivet med fokus på Axel Ax:son Johnson och J. Sigfrid Edström, 1900-1950
- 2005
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This thesis investigates leadership in Swedish business during the period of 1900-1950. The main aim is to explore the relationship between entrepreneurship and leadership and how the leader uses his social competence, both inside and outside the company, to enhance economic and organisational change. The study focuses on two main characters: Axel Ax:son Johnson (1876-1958), manager and owner of Johnsonkoncernen (The Johnson group), and J. Sigfrid Edström (1870-1964), professional manager of ASEA (today ABB). They represented Swedish capitalism in its golden years. The study uses archives previously never opened to researchers. To understand how and why leadership have changed during the 20th century, the theoretical framework is based on the concepts of entrepreneurship, paternalism, network and charisma. Leadership involves communication. The corporate leader in the early 20th century had to build networks both of stronger and looser types, each of these two types with a different aim, but with the ambition to care for the company’s best interest. Johnson and Edström used their personality to attain more power inside the company as well as to attract attention from the outside. This thesis shows that if the leaders took advantage of their social communication skills they could create new combinations, which could benefit their companies. Therefore, the leader had to bring out the best in his co-workers, in order to attract new ideas, competence and entrepreneurial skills around him. The leader did not only involve himself in networks with fellow industrialists, but also with Social Democrats and journalists. Johnson and Edström had to be leaders not only within the company but also in the surrounding society. They involved themselves in many other areas; in the local community and as opinion builders. The patriarchal strategies still proved fruitful during the period. Yet, modern strategies connected to large organizations and bureaucratic methods were also introduced. It was hard for the employees to accept these changes. If the companies would expand, the leader could attract admirers and followers who fully accepted the leadership and strategies. The leader had to become an entrepreneur with a will to encourage others.
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| 18. |
- Olofsson, Sven-Olof, 1947, et al.
(författare)
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The formation of lipid droplets: possible role in the development of insulin resistance/type 2 diabetes.
- 2011
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Ingår i: Prostaglandins, leukotrienes, and essential fatty acids. - : Elsevier BV. - 1532-2823 .- 0952-3278. ; 85:5, s. 215-8
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Tidskriftsartikel (refereegranskat)abstract
- Neutral lipids are stored in so-called lipid droplets, which are formed as small primordial droplets at microsomal membranes and increase in size by a fusion process. The fusion is catalyzed by the SNARE proteins SNAP23, syntaxin-5 and VAMP4. SNAP23 is involved in the insulin dependent translocation of GLUT4 to the plasma membrane, and has an important role in the development of insulin resistance. Thus fatty acids relocalize SNAP23 from the plasma membrane (and the translocation of GLUT 4) to the interior of the cell giving rise to insulin resistance. Moreover this relocalization is seen in skeletal muscles biopsies from patients with type 2 diabetes compared to matched control. Thus a missorting of SNAP23 is essential for the development of insulin resistance.
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| 19. |
- Olsson, Sven-Olof, et al.
(författare)
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Arkiv i Halland : En vägledning till arkiven i länet
- 2003
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Bok (populärvet., debatt m.m.)abstract
- Den offentliga verksamheten dokumenteras och sparas tack vare offentlighetsprincipen i statliga och kommunala arkiv, men sämre är det ställt med det som händer oss i vårt arbetsliv, i företag, i hem och på fritid. Detta är till ett stort bekymmer för den historieintresserade allmänheten. Tack och lov finns det enskilda krafter i ideella organisationer och näringsliv som tar tillvara och bevarar även den senare typen av material. För Hallands del har genom idogt intresse hos hembygdsföreningar och folkrörelseorganisationer m m skett en omfattande insamling av arkivmaterial beträffande den enskilda verksamheten i Halland. Ambitionen med denna bok har varit att så långt möjligt ringa in och samla lejonparten av förekommande offentliga och enskilda arkiv. Av de tusentals arkiv som omnämns kan man skapa sig en ganska god bild av vad som kännetecknat hallänningen under de senaste 150 åren, ja i vissa fall mycket längre tillbaka - ända ner i den danska tiden. Här erbjuds således fritidsforskaren och yrkeshistorikern liksom gymnasie- och komvuxstuderanden en rad möjligheter att gräva vidare i historien. Dessutom kan den intresserade genom de post-, e-post- och hemsidesadresser som förekommer hitta spännande ingångar till det som är av värde och intresse för honom eller henne.
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| 20. |
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| 21. |
- Olsson, Sven-Olof
(författare)
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Medeltida danskt järn : framställning av och handel med järn i Skåneland och Småland under medeltiden
- 1995
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Bok (populärvet., debatt m.m.)abstract
- Danmark var det mest framträdande landet i Norden under medeltiden. Skåneland, dvs Skåne, Halland och Blekinge, utgjorde en viktig del av Danmark på grund av förekomster av strömmande vatten, skog samt sjö- och myrmalm. Från gränsbygderna på svenska sidan, främst från Småland och Västergötland, skedde en mycket omfattande handel utmed ådalarna, ofta ner till kuststäderna, utanför statlig kontroll. Vi är sedan gammalt förtrogna med den svenska äldre och lågteknologiska järnutvinningen, medan den som skett på dansk botten varit mycket lite känd. I de östdanska landskapen Skåne, Halland och Blekinge har skett en betydande järnproduktion under medeltiden. Troligen har det östdanska järnet spelat en viktig roll för kyrkobyggnation under högmedeltiden liksom för städernas utbyggnad, framför allt den som gällde Köpenhamn. Under 1990-talet har man börjat få en klarare bild av den östdanska järnframställningen. Väg- och järnvägsutbyggnader samt naturgasledningsdragningar i Skåne och Halland har bidragit till att blottlägga många fynd. De pågående arkeologiska utgrävningarna i Göinge i norra Skåne och i Tvååker i Halland pekar genom sina stora slaggvarpar mot en mycket betydande järnframställning.
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| 22. |
- Olsson, Sven-Olof, 1939-
(författare)
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Nordic trade cooperation in the 1930s
- 2010
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Ingår i: Managing Crises and De-Globalisation. - London : Routledge. - 9780415561723 ; , s. 17-33
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 23. |
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| 24. |
- Scheepers, Gerhard, et al.
(författare)
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Hållfasthetsbestämning av virke med en NIR-kamera
- 2017
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- SP, Innventia och Luleås Tekniska Universitet har genomfört en förstudie där man undersökte om nära-infrarött (NIR) data kan bidra till säkrare hållfasthetsbestämning av virke. För att göra det behövdes förutom NIR-data, dels data som konventionellt används i sågverk för att göra hållfasthets-uppskattningar, dels referensdata från mekanisk provning.Följande data samlades in från 100 granplankor med dimensionen 3600*150*45 mm3:1. mått, vikt, och därmed densitet,2. egenfrekvenser via dynamisk excitering,3. högupplösta NIR-bilder på 2 flatsidor av varje planka,4. RGB och fibervinkeldata från flat- och kantsidorna,5. röntgentomografibilder,6. förstörande böjtestdata, med bestämning av lokal och global E-modul, och7. kvalitativ inventering av brottyp och kvistposition. Databasen är i sig en värdefull resurs och en god grund för fortsatt forskning och utveckling mot kun-skap och tillämpningar baserat på information som hittills inte utvärderats och nyttjats.Virkesegenskaper som påverkar hållfasthet, såsom tjurved, kunde identifieras och visualiseras. Andra egenskaper som är viktiga hållfasthetsindikatorer, såsom egenfrekvens och densitet, kunde predikteras med multivariata modeller baserade på NIR-spektraldata. Inledande modellförsök visar att det går att prediktera global E-modul med multivariata modeller baserade på NIR-spektraldata med ungefärlig samma precision som industriell hållfasthetsbedömning med dynamisk excitering. De NIR-data som användes i modelleringen var dock bara medelvärden över hela plankan. Därför finns det god potential för bättre prediktion med mer riktade variabler, som speglar de spatiala variationerna i varje planka, t.ex. runt kvistar, vilket blir ämnet för ett eventuellt fortsättningsprojekt.Projektet finansierades av Norrskogs Forskningsstiftelse, Stiftelsen Åforsk, Träcentrum Norr, och Södra Skogsägarnas Stiftelse för Forskning, Utveckling och Utbildning. Individer som medverkade i projektet inkluderar Gerhard Scheepers, Jörgen Olsson, Anders Lycken, Sven-Olof Lundqvist och Thomas Grahn (RISE Bioekonomi); och Olle Hagman (LTU). RemaSawco och JGA i Linneryd hjälpte också med insamlingen av fibervinkeldata.
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| 25. |
- Sundström, Johan, Professor, 1971-, et al.
(författare)
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Rationale for a Swedish cohort consortium
- 2019
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Ingår i: Upsala Journal of Medical Sciences. - : Taylor & Francis Group. - 0300-9734 .- 2000-1967. ; 124:1, s. 21-28
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Tidskriftsartikel (refereegranskat)abstract
- We herein outline the rationale for a Swedish cohort consortium, aiming to facilitate greater use of Swedish cohorts for world-class research. Coordination of all Swedish prospective population-based cohorts in a common infrastructure would enable more precise research findings and facilitate research on rare exposures and outcomes, leading to better utilization of study participants' data, better return of funders' investments, and higher benefit to patients and populations. We motivate the proposed infrastructure partly by lessons learned from a pilot study encompassing data from 21 cohorts. We envisage a standing Swedish cohort consortium that would drive development of epidemiological research methods and strengthen the Swedish as well as international epidemiological competence, community, and competitiveness.
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| 26. |
- Tagesson, Torbjörn, 1969-, et al.
(författare)
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Does auditor rotation influence audit quality : the contested hypotheses tested on Swedish data
- 2006
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Auditor independence is considered a key factor when ensuring high audit quality. Advocates for auditor rotation argue that rotation improves audit quality due to its positive influence on auditor independence. Opponents argue that rotation does not lead to improved audit quality, since the independence is gained at the expense of the auditors’ knowledge of business structure and routines. The aim of our study is to investigate the relationship between rotation and audit quality. We use agency theory to derive the advocate view and stewardship theory to derive the opponents’ hypothesis. These hypotheses were tested on Swedish data. The results indicate only weak support for the hypothesis that rotation influence audit quality. The weakness is partly due to measurement problems. The proxies used in the literature appear to measure different facets of audit quality. Through an interpretation of a factor analysis, we suggest two main facets, perceived audit quality, which is significantly influenced by auditor rotation, and actual audit quality, which is not influenced by rotation.
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| 27. |
- Tagesson, Torbjörn, et al.
(författare)
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Does auditor rotation influence audit quality : the contested hypotheses tested on Swedish data
- 2006
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Bok (övrigt vetenskapligt/konstnärligt)abstract
- Auditor independence is considered a key factor when ensuring high audit quality. Advocates for auditor rotation argue that rotation improves audit quality due to its positive influence on auditor independence. Opponents argue that rotation does not lead to improved audit quality, since the independence is gained at the expense of the auditors’ knowledge of business structure and routines. The aim of our study is to investigate the relationship between rotation and audit quality. We use agency theory to derive the advocate view and stewardship theory to derive the opponents’ hypothesis. These hypotheses were tested on Swedish data. The results indicate only weak support for the hypothesis that rotation influence audit quality. The weakness is partly due to measurement problems. The proxies used in the literature appear to measure different facets of audit quality. Through an interpretation of a factor analysis, we suggest two main facets, perceived audit quality, which is significantly influenced by auditor rotation, and actual audit quality, which is not influenced by rotation.
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| 28. |
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| 29. |
- Umans, Timurs, et al.
(författare)
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Organization culture and well-being of Swedish auditors
- 2015
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The paper explores relationship between organizational context and auditors’ well-being. Where organizational context is explored through the prism of three types of organizational culture: clan, hierarchy, adhocracy and market and well-being represented by job satisfaction, life satisfaction and life balance. The study is based on the survey of 209 Swedish auditors performed in spring 2014, and explored the relationship between organizational context and auditors’ well-being by the means of correlations and multiple regression analysis. Results of the study indicate that clan organizational culture is the strongest positive driver of auditors’ well-being. Study also indicates that hierarchy culture has a positive effect on auditors’ job satisfaction, while market culture has a negative influence on auditors’ life balance. Findings of the study have implications for both theory and practice, in that it established the link between different aspects of organizational context and auditors’ well-being consequently suggesting human resource strategy of managing organizational context to auditing firms.
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| 30. |
- Zhou, Linghua, et al.
(författare)
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Effect of number of annual rings and tree ages on genomic predictive ability for solid wood properties of Norway spruce
- 2020
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Ingår i: BMC Genomics. - : BioMed Central Ltd.. - 1471-2164. ; 21:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Genomic selection (GS) or genomic prediction is considered as a promising approach to accelerate tree breeding and increase genetic gain by shortening breeding cycle, but the efforts to develop routines for operational breeding are so far limited. We investigated the predictive ability (PA) of GS based on 484 progeny trees from 62 half-sib families in Norway spruce (Picea abies (L.) Karst.) for wood density, modulus of elasticity (MOE) and microfibril angle (MFA) measured with SilviScan, as well as for measurements on standing trees by Pilodyn and Hitman instruments. Results: GS predictive abilities were comparable with those based on pedigree-based prediction. Marker-based PAs were generally 25-30% higher for traits density, MFA and MOE measured with SilviScan than for their respective standing tree-based method which measured with Pilodyn and Hitman. Prediction accuracy (PC) of the standing tree-based methods were similar or even higher than increment core-based method. 78-95% of the maximal PAs of density, MFA and MOE obtained from coring to the pith at high age were reached by using data possible to obtain by drilling 3-5 rings towards the pith at tree age 10-12. Conclusions: This study indicates standing tree-based measurements is a cost-effective alternative method for GS. PA of GS methods were comparable with those pedigree-based prediction. The highest PAs were reached with at least 80-90% of the dataset used as training set. Selection for trait density could be conducted at an earlier age than for MFA and MOE. Operational breeding can also be optimized by training the model at an earlier age or using 3 to 5 outermost rings at tree age 10 to 12 years, thereby shortening the cycle and reducing the impact on the tree.
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| 31. |
- Zhou, Linghua, et al.
(författare)
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Genetic analysis of wood quality traits in norway spruce open-pollinated progenies and their parent plus trees at clonal archives and the evaluation of phenotypic selection of plus trees
- 2019
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Ingår i: Canadian Journal of Forest Research. - : Canadian Science Publishing. - 0045-5067 .- 1208-6037. ; 49:7, s. 810-818
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Tidskriftsartikel (refereegranskat)abstract
- A two-generation pedigree involving 519 Norway spruce (Picea abies (L.) Karst.) plus trees (at clonal archives) and their open-pollinated (OP) progenies was studied with the aim to evaluate the potential of plus-tree selection based on phenotype data scored on the plus trees. Two wood properties (wood density and modulus of elasticity, MOE) and one fiber property (microfibril angle, MFA) were measured with a SilviScan instrument on samples from one ramet per plus tree and 12 OP progenies per plus tree (total of 6288 trees). Three ramets per plus tree and their OP progenies were also assessed for Pilodyn penetration depth and Hitman acoustic velocity, which were used to estimate MOE. The narrow-sense heritability (h2) estimates based on parent– offspring regression were marginally higher than those based on half-sib correlation when three ramets per plus tree were included. For SilviScan data, estimates of the correlation between half-sib, progeny-based breeding values (BVs) and plus-tree phenotypes, as well as repeatability estimates, were highest for wood density, followed by MOE and MFA. Considering that the repeatability estimates from the clonal archive trees were higher than any h2 estimate, selection of the best clones from clonal archives would be an effective alternative.
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| 32. |
- Åström-Olsson, Karin, 1959, et al.
(författare)
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Myocardial release of FKBP12 and increased production of FKBP12.6 in ischemia and reperfusion experimental models
- 2009
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Ingår i: Biochem Biophys Res Commun. - : Elsevier BV. - 1090-2104 .- 0006-291X. ; 390:4, s. 1299-304
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Coronary artery occlusion and reperfusion may trigger reversible and irreversible ischemic and reperfusion injury. The primary aim of this study was to evaluate protein release into the myocardium in a porcine model during ischemia and reperfusion to search for clarifying models for reperfusion injury and secondarily to investigate release and production of the immunophilins FKBP12/12.6 in this model and in cell cultures. METHODS: In a porcine model local myocardial ischemia was induced during 45min followed by 120min of reperfusion. Microdialysis samples from ischemic and non-ischemic areas were analyzed with surface-enhanced laser desorption ionization (SELDI) mass spectrometry (MS) and Western blotting (WB). Myocardial biopsies from areas at risk and control areas were analyzed with reverse transcription polymerase chain reaction (RT-PCR). Myocardial cell cultures from mice (HL-1 cells) were exposed to hypoxia and then analyzed with WB and RT-PCR. RESULTS: FK binding protein12 (FKBP12), ubiquitin and myoglobin were identified as being released during ischemia and reperfusion in microdialysates. RT-PCR analysis on the biopsies after ischemia revealed a non-significant increase in mRNA expression of FKBP12 and a significant increase in mRNA expression of FKBP12.6. Lysates from HL-1 cells exposed to hypoxia demonstrated increase of FKBP12 and a significant increase in mRNA expression of FKBP12.6. CONCLUSION: In a myocardial ischemic-reperfusion porcine model as well as in hypoxic HL-1 cells, release of FKBP12 and increased production of FKBP12.6 was demonstrated. The findings indicate important mechanisms related to these immunophilins in the reaction to ischemia/hypoxia and reperfusion in the heart.
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