| 1. |
- Högberg, Fredrik, 1971-
(kompositör, creator_code:cre_t)
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Why Do You Dance : for vocal ensemble and viola
- 2021
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Konstnärligt arbete (refereegranskat)abstract
- Kompositionen Why Do You Dance beställdes av Erik Westberg till LTUs 50-årsjubileumskonsert. Sedan dess har verket spelats in på Cd och framförts i direktsändning, både i Sverige och utomlands (EBU, SR2). Verket bygger fritt på en intervju med Pablo Picasso.Verket nådde miljonpublik via EBU (European Broadcasting Union).
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| 2. |
- Abrahamsson, Sara, et al.
(författare)
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Inheritance of height growth and autumn cold hardiness based on two generations of full-sib and half-sib families of Pinus sylvestris
- 2012
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Ingår i: Scandinavian Journal of Forest Research. - : Informa UK Limited. - 0282-7581 .- 1651-1891. ; 27, s. 405-413
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Tidskriftsartikel (refereegranskat)abstract
- The genetic variability in height growth and autumn cold hardiness were evaluated in a full-sib family of Scots pine (Pinus sylvestris (L.)) in a field trial in northern Sweden and 358 open pollinated families generated from the progeny of the full-sib cross. Height and autumn cold hardiness were assessed in the progeny of the full-sib cross at 9-19 years of age and on 3995 open pollinated progenies at three years of age. The autumn cold hardiness [critical temperature (CT)] of trees and progenies was tested by artificial freeze testing of detached needles at various temperatures. Significant genetic variation was found among progenies in both height growth and cold hardiness with a narrow sense heritability of 0.16 and 0.37, respectively. There was also a significant positive genetic correlation (r(a) = 0.39) between height growth and CT with taller trees showing later autumn cold acclimation. It was concluded that there is significant additive genetic variance for height and CT which warrants a potential for mapping quantitative trait loci. Furthermore, the low heritability for height growth shows the importance of removing the environmental influence by using additive genetic predictions instead of phenotypic measurements thereby improving the accuracy of genetic associations.
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| 3. |
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| 4. |
- Andersson, Eva I., 1968
(författare)
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Vad kostade kläderna? Manliga tjänares dräkt under första hälften av 1300-talet
- 2004
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Ingår i: Historisk Tidskrift. - 0345-469X. ; 2004:2, s. 187-202
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Tidskriftsartikel (refereegranskat)abstract
- How Much Were They? The Prize of Male Servant Clothing in the First Half of the Fourteenth Century My aim in this article is to show how it is possible, by combining information from different kinds of evidence, mostly wills containing gifts of clothing to servants and archaeological evidence, to gain knowledge of how common working men were dressed in the Middle Ages. I compare several wills from the fourteenth century in which clothes were given to male servants and where both fabric width and price were stated, with the clothes of the so-called Bocksten Bog man. The most common material in clothes given to male servants during the first half of the fourteenth century was cloth from Brabant: Nivelles and Poperinge. In a large number of cases the material is not stated, which reduces the value of this information. Nevertheless, even this information is valuable when calculating the yardage and cost of those gifts, which usually consisted of a tunic and cloak. The prices of many of the materials are listed in king Magnus Eriksson’s statute for Kopparberget, the copper mining area in Dalecarlia, from 1347, while the width of woollen cloth from Brabant is documented in weaver’s regulations. The results show that a tunic and cloak of the same type as those worn by the Bocksten man, in many ways the basic garments for a man in the Middle Ages, was a substantial investment, since the cost of only a tunic of imported cloth can be compared to the cost of 126 litres of beer. The cost of the tunic and cloak of the Bocksten man, which were probably made from a coarse homespun called ”vadmal,” would have been approximately the same as for a barrel of herring, less than a tenth of the cost for the same clothes made from material imported from Poperinge. A much debated issue among historians concerns which groups in society were affected by fashion. Both the fact that the clothes from Herjolfsnes in Greenland, which were found in the graves of people of lower social status, corresponds well with current European fashion and that the same garments dominate in written descriptions of the time, irrespective of social group, suggest that the fashion ideals spread to most parts of society. The frequency of gifts to servants of the master’s or mistress’ own clothes show that there were no fixed rules concerning materials or cut for different social groups. This is also confirmed by the lack of detailed regulations on dress in the few Nordic examples of sumptuary regulation.
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| 5. |
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| 6. |
- Andersson, Jonas
(författare)
-
SEBRA Sensor based awareness for bicyclists : FINAL REPORT
- 2020
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The overall trend in Sweden is that the number of fatalities and severely injured in traffic is constantly decreasing. However, bicyclists are the group of road-users that often suffer the most severe injuries when involved in accidents.In this project we want to investigate if a radar mounted on bicycles can help bicycle riders to get better situational awareness and thereby avoid getting into dangerous situations.For active safety in vehicles, the state of art integrates radar-, lidar-, and camera-based sensors to create awareness for the vehicle and driver. To apply this kind of system on a bicycle would be unfeasible, since the cost would in some cases be as much as the entire bicycle. In this project we study and propose a low-cost sensor solution that improves traffic safety for bicycles that consist of only one of these sensors - the radar - it is the cheapest and most robust solution.The project first identified the most relevant use-cases and in conjunction to this, identify a business model that can make the safety system attractive for end-users. Secondly, a radarbased safety system for bicycles is developed with both sensor and human interface.Finally,the system is evaluated in relevant traffic situations.The SEBRA project aims for the following research questions:- RQ1: What safety issues can be addressed by a radar-based safety system mounted onbicycles?- RQ2: What performance requirements (field-of-view, computational capacity, power consumption, etc.) should such a system fulfil?- RQ3: How should the interaction with the bicyclists be designed to give a high level of safety and user experience?- RQ4: How can incentives and business models be developed to create a viable utility device for bicycles?Within the scope of Open Research at AstaZero, we plan to simulate the selected scenarios from literature in the test track environment to finalize the answer for RQ1 and build answerfor RQ2. The tests also contribute initial insights for RQ3 answer.
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| 7. |
- Andersson, Joacim, PhD, 1978-, et al.
(författare)
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The walking rhythm of physical education teaching : an in-path analysis
- 2019
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Ingår i: Physical Education and Sport Pedagogy. - : Routledge. - 1740-8989 .- 1742-5786. ; 24:4, s. 402-420
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Tidskriftsartikel (refereegranskat)abstract
- Background: While studies of teaching frequently preserve an interest in teacher-pupil encounters that take place in certain spots, this article shows how teachers' can be understood as in-path instructors, which is significant for student-based learning. This complements studies that have mainly focused on teachers instructional work taking place at certain spots.Purpose: The purpose is to describe how a PE teacher's rhythmic labouring of the diverse settings in the gym creates a learning environment. By examining emplacement (spatial) and empacement (temporal) as important aspects of how learning environments are constituted, this article contributes a framework for studying and analysing a teacher's work from a moving vantage point.Conclusions: Based on a video ethnographic approach and using a wearable camera attached to the teacher's chest, the analysis of a station-wise lesson show how the teacher frequently covers a large part of the room and creates a web of educational challenges and possibilities. These brief encounters are identified as important tools that support each pupil's rhythm and engagement in the learning activities and maintain the corporate rhythm of a class. Furthermore, by analysing the teacher's temporal and spatial walking technique, which helps the pupils to transit between and accomplish practical exercises, the article highlights how the teacher's ability to support pupils' progression partly builds on a regional knowledge that is cultivated by the array of encounters.
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| 8. |
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| 9. |
- Andersson, Magnus, 1963-
(författare)
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Networking Change Leader : New Role for a Program Director in Engineering Education
- 2023
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Ingår i: 19th CDIO International Conference, CDIO 2023 - Proceedings. - : Chalmers University of Technology. ; , s. 669-678
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Konferensbidrag (refereegranskat)abstract
- Calls for changes in higher education are omnipresent and motivated by major challenges for society. Several of these challenges, for example those related to digitalization and sustainability, falls into the category of emerging and transformative challenges. The breadth and width of such challenges is too large to be handled by a single individual or even a small group of individuals. Instead, their solution requires an adaptive leadership with relevant activities at all organizational levels. From research literature and previous successful change processes, it is known that change leaders in the middle are key players during such transformations. In engineering education (and in fact in any other education aiming for a profession), it is natural that this role is taken by a program director who already has a responsibility for the quality and the development of an engineering program. In this work, I will approach the role of a program director from a logical perspective using arguments based on a simple comparison between available time and total time required to create the desired change. It is obvious that large challenges demand a substantial amount of time to find an acceptable solution, which is outside of the reach for any single individual. I will also discuss the crucial role of persons in the middle for obtaining successful change related to large challenges. Based on my own case, I will try to give some advice about how a program director in the role as a person in the middle can handle this pressing situation. I will point towards the needs of personal time management, a basic understanding of agile change management, the ability to create structures and collaborative efforts that promote agile actions, the need for making coherence and using inclusion strategies and the necessity of networking. I will also emphasize the importance that universities support internal and external networking structures.
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| 10. |
- Andersson, Sofia E M, 1979, et al.
(författare)
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Activation of Fms-like tyrosine kinase 3 signaling enhances survivin expression in a mouse model of rheumatoid arthritis.
- 2012
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Ingår i: PloS one. - : Public Library of Science (PLoS). - 1932-6203. ; 7:10
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Tidskriftsartikel (refereegranskat)abstract
- Survivin is known as an inhibitor of apoptosis and a positive regulator of cell division. We have recently identified survivin as a predictor of joint destruction in patients with rheumatoid arthritis (RA). Flt3 ligand (Flt3L) is expressed in the inflamed joints and has adjuvant properties in arthritis. Studies on 90 RA patients (median age 60.5 years [range, 24-87], disease duration 10.5 years [range, 0-35]) show a strong positive association between the levels of survivin and Flt3L in blood. Here, we present experimental evidence connecting survivin and Flt3L signaling. Treatment of BALB/c mice with Flt3L led to an increase of survivin in the bone marrow and in splenic dendritic cells. Flt3L changed the profile of survivin splice variants, increasing transcription of the short survivin40 in the bone marrow. Treatment with an Flt3 inhibitor reduced total survivin expression in bone marrow and in the dendritic cell population in spleen. Inhibition of survivin transcription in mice, by shRNA lentiviral constructs, reduced the gene expression of Flt3L. We conclude that expression of survivin is a downstream event of Flt3 signaling, which serves as an essential mechanism supporting survival of leukocytes during their differentiation, and maturation of dendritic cells, in RA.
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| 11. |
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| 12. |
- Anens, Elisabeth, et al.
(författare)
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Physical activity in subjects with multiple sclerosis with focus on gender differences : a survey
- 2014
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Ingår i: BMC Neurology. - : Springer Science and Business Media LLC. - 1471-2377. ; 14, s. 47-
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Tidskriftsartikel (refereegranskat)abstract
- Background: There is increasing research that examines gender-issues in multiple sclerosis (MS), but little focus has been placed on gender-issues regarding physical activity. The aim of the present study was to describe levels of physical activity, self-efficacy for physical activity, fall-related self-efficacy, social support for physical activity, fatigue levels and the impact of MS on daily life, in addition to investigating gender differences. Methods: The sample for this cross-sectional cohort study consisted of 287 (84 men; 29.3%) adults with MS recruited from the Swedish Multiple Sclerosis Registry. A questionnaire was sent to the subjects consisting of the self-administrated measurements: Physical Activity Disability Survey - Revised, Exercise Self-Efficacy Scale, Falls-Efficacy Scale (Swedish version), Social Influences on Physical Activity, Fatigue Severity Scale and Multiple Sclerosis Impact Scale. Response rate was 58.2%. Results: Men were less physically active, had lower self-efficacy for physical activity and lower fall-related self-efficacy than women. This was explained by men being more physically affected by the disease. Men also received less social support for physical activity from family members. The level of fatigue and psychological consequences of the disease were similar between the genders in the total sample, but subgroups of women with moderate MS and relapsing remitting MS experienced more fatigue than men. Conclusions: Men were less physically active, probably a result of being more physically affected by the disease. Men being more physically affected explained most of the gender differences found in this study. However, the number of men in the subgroup analyses was small and more research is needed. A gender perspective should be considered in strategies for promoting physical activity in subjects with MS, e. g. men may need more support to be physically active.
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| 13. |
- Appelros, P., et al.
(författare)
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Ten-year risk for myocardial infarction in patients with first-ever stroke : a community-based study
- 2011
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Ingår i: Acta Neurologica Scandinavica. - : Hindawi Limited. - 0001-6314 .- 1600-0404. ; 124:6, s. 383-389
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Tidskriftsartikel (refereegranskat)abstract
- Background: Stroke and coronary heart disease (CHD) share common risk factors. The risk for stroke patients to have a myocardial infarction (MI) has not been fully explored. Methods: Three hundred and seventy-seven first-ever stroke patients were ascertained prospectively. The 10-year incidence of MI was examined by register searches. The results were compared to the general Swedish population. Predictors for MI were identified using univariate and multivariate analysis. Results: The cumulative incidence of MI over 10 years was 25.0/100 (95% confidence interval (CI), 19.5-31.5), 26.5 for men, (95% CI, 18.9-45.8) and 23.4 for women (95% CI, 16.0-32.9). Compared to the general population, the relative risk for stroke patients having a MI was 1.6 for men (95% CI, 1.12-2.37) and 1.9 for women (95% CI, 1.27-2.90). In multivariate analysis, CHD before the stroke (MI, angina pectoris, coronary artery bypass grafting, or percutaneous transluminal coronary angioplasty) and peripheral artery disease were significant predictors for MI. Conclusions: The risk for MI is significantly higher, for both male and female stroke patients, compared to the general population. Stroke patients with previous CHD and peripheral artery disease are at highest risk. Stroke patients should receive adequate secondary prevention, and cardiac complaints must be taken seriously.
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| 14. |
- Appelros, Stefan, et al.
(författare)
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Incidence, aetiology and mortality rate of acute pancreatitis over 10 years in a defined urban population in Sweden
- 1999
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Ingår i: British Journal of Surgery. - : Oxford University Press (OUP). - 1365-2168 .- 0007-1323. ; 86:4, s. 465-470
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: There is a wide range (5-50 per 100 000) in the reported annual incidence of acute pancreatitis. Furthermore, the predominant aetiology varies in different reports. This study was undertaken to establish the current incidence, aetiology and associated mortality rate in a defined population. METHODS: A retrospective study of all cases of acute pancreatitis admitted over a 10-year period to a single institution was performed. In addition the autopsy and forensic materials were reviewed. RESULTS: Altogether 883 attacks of acute pancreatitis were recorded, of which 547 were first attacks. The annual incidence of first attacks was 23.4 per 100 000. Including relapses, the incidence was 38.2 per 100 000. Biliary disease was the main aetiological factor in first attacks whereas alcohol was the predominant factor when relapses were included. The mean annual mortality rate for acute pancreatitis in the population was 1.3 per 100 000. Of 31 patients who died from acute pancreatitis only 15 were diagnosed before death. For recurrent disease the mortality rate was 0.3 per cent. In 12 patients the pancreatitis was associated with pancreatic carcinoma. CONCLUSION: It is important to differentiate between first attacks and relapses, since both incidence and aetiology figures are influenced by this, and it is important to include autopsy and forensic material in population-based mortality studies.
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| 15. |
- Aquilonius, Sten-Magnus, et al.
(författare)
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Utveckling inom motorikområdet
- 2004
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Ingår i: Incitament. ; , s. 7-9
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Forskningsöversikt (populärvet., debatt m.m.)
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| 16. |
- Arheimer, Berit, et al.
(författare)
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Kväveretention i svenska sjöar och vattendrag – betydelse för utsläpp från reningsverk
- 2007
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Den här rapporten har tagits fram på uppdrag av Naturvårdsverket för att underlättadiskussionen med EU-kommissionen, som har annonserat att den tänker stämma Sverigeinför EU-domstolen för otillräckligt genomförande av avloppsdirektivet. Vidbedömningen av vilka reningsverk som omfattas av krav på kväverening tas i Sverigehänsyn till den naturliga avskiljning (retention) som sker i vattendrag under transportenfrån utsläppskälla till havet.Kväveretention är ett vedertaget begrepp som inkluderar ett flertal naturligabiogeokemiska processer som permanent reducerar kväve från vattenfasen i sjöar ochvattendrag. Speciellt stor är effekten i sjörika områden. Sverige har totalt 92 000 sjöarsom är större än 1 ha. Det är inte ovanligt med 30-70% kväveavskiljning i svenskavattendrag och sjöar. Den process som dominerar avskiljningen i naturen ärdenitrifikation, vilket är samma process som utnyttjas för att avlägsna kväve uravloppsvatten vid reningsverken.Naturlig retention är dock svår att mäta och måste uppskattas med hjälp av antaganden,som så många andra flöden i naturen. I Sverige har man utvecklat ett modellsystem förstorskalig beräkning av närsalttransport, inklusive retention, från land till hav med relativthög geografisk upplösning. Systemet kopplar fältskalemodeller med avrinningsmodeller,är vetenskapligt dokumenterat och granskat och har tillämpats storskaligt sedan 1997 förinternationell rapportering till HELCOM. Avrinningsområdesmodellen (HBV-NP)justeras och utvärderas mot mätningar där sådana finns. Den kväveretention som beräknasmed hjälp av HBV-NP modellen utgörs av kväve som permanent avskiljs till atmosfäroch sediment och som därför inte vidare bidrar till övergödningen av vattensystemen.Både beräkningar och mätningar visar att kväveretentionen är störst på sommaren,speciellt i sjörika områden med hög belastning. Det är stor skillnad i sjöarsretentionskapacitet; i norra delarna av landet är den låg medan sjöarna i de södra delarnaav landet är betydligt effektivare som kvävesänkor. I södra Sverige är medelreduktionen30-40 kg ha-1 sjö år-1. Totalt reduceras ca 30 000 ton kväve per år i sjöar och vattendrag,varav 70% i södra Sverige. För enskilda utsläpp som sker i inlandet reduceras bidraget tillhavet kraftigt under transporten genom vattendrag och sjöar, speciellt för sydcentralaSverige där retentionen i sjöarna är hög. Den ackumulerade effekten kan bli >80%naturlig kväveavskiljning för utsläpp i vissa områden.Det är svårt att utvärdera modellresultaten eftersom inte kväveretentionen går att mätadirekt och retentionen integreras för stora områden och vattendrag. Ofta används andravariabler för att bedöma trovärdigheten i beräkningarna. HBV-NP modellens resultatutvärderas kontinuerligt mot tidsserier av observationer i vattendrag, både för vattenföringoch närsalthalt när den används operationellt. Modellen utvärderas både statistiskt ochvisuellt. Överensstämmelsen med vattenföring och vattenbalans är normalt god, medannärsalthalterna kan avvika en del från uppmätta värden. Känslighetsstudier har visat attmodellen är relativt robust. När modellens resultat jämförs med andra modeller eller enklabudgetberäkningar för sjöar uppstår avvikelser, men dessa kan normalt förklaras av olika2antaganden och indata. Modellen har inte sämre precision än andra motsvarandemodeller, snarare är den något bättre vad gäller vattenföring.När man beräknar hur stor andel av kväveutsläppet från ett enskilt reningsverk som nårhavet ackumuleras retentionen enligt flödesvägarna i landskapet. De reningsverk varsutsläpp passerar fler sjöar får liten påverkan på havet. Naturlig kväveretention ivattendrag och sjöar reducerar de svenska reningsverkens bidrag till kusten med 3200ton/år, vilket motsvarar 18% av reningsverkens totala utsläpp. Retentionen varierar dockbetydligt mellan olika delar av landet. De flesta reningsverk med större utsläpp finnslängs kusten och i södra Sverige, där 90% av retentionen på reningsverksutsläppen sker. INorrlands inland är reningsverken få och retentionen låg, vilket gör att mängden reduceratutsläpp är låg.Allt tyder på att den beräknade kväveretentionen för Sverige är av rätt storleksordningoch att det storskaliga mönstret för Sverige är korrekt, även om avvikelser kanförekomma för enskilda mindre områden och för olika tidsperioder
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| 17. |
- Arneback, Emma, 1974-, et al.
(författare)
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Yrkeslärare som värdebalanserare - värdekonflikter mellan skolans och arbetsplatsens läroplan i lärlingsutbildning
- 2017
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Ingår i: Utbildning och Lärande / Education and Learning. - Skövde : Högskolan i Skövde. - 2001-4554. ; :1, s. 82-101
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Tidskriftsartikel (refereegranskat)abstract
- The school and the workplace often represent two different cultures in terms of what is valued as important skills and values. The role of vocational teachers in apprenticeship education is to ensure that apprentices are embedded in both these cultures. However, because of significant differences between the school and the workplace, this task poses a professional challenge and a potential for value conflicts. In this study we analyse interviews with voca-tional teachers in the apprenticeship training for the building and construction programme using concepts based in Pragmatism and Curriculum theory. Our ambition is to highlight values often upheld by unreflected habits, and discuss how these condition the work of the vocational teacher. The main results indicate the importance of recognizing that two different types of curricula seems to interact in the apprenticeship education; a workplace curriculum that emphasize, “work ethics” and a school curriculum that emphasizes stu-dents ́ “safety”. These different curricula interact in specific ways through the work of the vocational teachers that can be described as a ‘balancing act’. How this ‘balancing act’ is done have significant consequences for what kind of education students are offered and what value conflicts that emerge.
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| 18. |
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| 19. |
- Arora Jonsson, Seema
(författare)
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Development and integration at a crossroads: Culture, race and ethnicity in rural Sweden
- 2017
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Ingår i: Environment and Planning A. - 0308-518X. ; 49, s. 1594-1612
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Tidskriftsartikel (refereegranskat)abstract
- The recent arrival of refugees in rural Sweden has raised hopes that they might stave off the depopulation of the country's periphery and lead to its development. Despite these visions in policy and in some academic literature, there is little research on how immigrant encounters with development and integration practices take shape on the ground. Critical research on immigrant integration in Sweden focuses on urban areas where most immigrants live. Rural areas, with sparse populations, weak economic positions vis a vis cities and increased policy pressures to define themselves as uniquely competitive, stand at a crossroads as they grapple with developing their areas and integrating newcomers. A less visible, but no less decisive crossroads is the vision of multiculturalism grounded in current institutions for democracy, in contrast to the road that I suggest we need to take - one that turns a critical eye on the relations that constitute the culture and institutions for integration and rural development. Drawing on long term ethnographic fieldwork in the province of Halsingland and on Bourdieu's conceptualization of misrecognition as well as critical race theories, I probe the misrecognition' of the rural and of institutions for integration and democracy in Sweden. I argue that the misrecognition of voluntary associations as the template for democracy for all and dominant discourses on what constitutes rural culture, inadvertently embody racial undertones that need to be confronted - both in theorizing and in practice - if aspirations for a multicultural democracy are to be taken as seriously as they must.
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| 20. |
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| 21. |
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| 22. |
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| 23. |
- Bakx, Tristan, et al.
(författare)
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Areas of high conservation value support specialist forest birds
- 2023
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Ingår i: Ecosphere. - 2150-8925. ; 14:6
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Tidskriftsartikel (refereegranskat)abstract
- Scientists have deemed existing protected areas in European forests insufficient to halt and reverse biodiversity loss resulting from ongoing intensification of management. In Sweden, protected areas are therefore complemented with the so-called areas of high conservation value (AHCVs), that is, landscapes encompassing both protected and assumed biodiversity-valuable areas as well as surrounding land, where managers should pay increased attention to biodiversity. However, it is not known whether AHCVs are chosen so that the species they are intended to benefit inhabit such AHCVs to a higher degree. We investigated whether the occurrence and abundance of bird species that may be particularly vulnerable to intense forest management were higher in Swedish forest landscapes proposed as AHCVs compared with other forest landscapes. To this end, we fitted a joint species distribution model to bird count data for 70 forest bird species from a standardized Swedish bird monitoring scheme. Twelve of the 20 forest specialists (60%) were detected to occur more often inside AHCVs than outside, whereas no forest specialist was less likely to occur inside AHCVs. For forest generalists, the corresponding figures were 28% and 18%, respectively. Six of 15 red-listed species (40%) were detectably more likely to occur inside AHCVs. The relationship between AHCV status of landscapes and the abundance of individual species was not as consistently negative or positive. The higher occurrence of specialists and threatened species inside AHCVs than outside of them suggests that if managed correctly, AHCVs are important habitat for a considerable part of the specialized forest avifauna in Sweden. We conclude that AHCVs represent an opportunity for designing green infrastructure benefitting Swedish forest biodiversity.
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| 24. |
- Belak, Sandor
(författare)
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H5N1 Avian Influenza in Cats: ABCD Guidelines on Prevention and Management
- 2009
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Ingår i: Journal of Feline Medicine and Surgery. - : SAGE Publications. - 1098-612X .- 1532-2750. ; 11, s. 615-618
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Forskningsöversikt (refereegranskat)abstract
- Overview Avian influenza is a disease of birds, caused by a type A influenza virus. The subtype H5N1 avian influenza occurs primarily in birds and infection varies from mild disease with little or no mortality to a highly fatal, rapidly spreading epidemic (highly pathogenic avian influenza). It is extremely rare for cats to be infected and there are only very few confirmed reports of the disease in cats in Europe. Infection Cats can be infected via the respiratory and oral routes (eg, by eating infected birds). The key precondition for infection is that the cat lives in an area where H5N1 virus infection has been confirmed in birds. Additionally, the cat should have had outdoor access to an environment where waterfowl is present, or contact with poultry or uncooked poultry meat, or close contact with an H5N1-infected, sick cat during the first week of infection. Clinical suspicion Clinical signs in cats may include fever, lethargy, dyspnoea, conjunctivitis and rapid death. Neurological signs (circling, ataxia) have also been recorded. Diagnosis The veterinary authorities should be notified. Oropharyngeal, nasal and/or rectal swabs or faecal samples of suspected cases should be submitted for PCR and/or virus isolation. Post-mortem samples of lung and mediastinal lymph nodes should be obtained. Particular care should be taken when handling the cat and/or samples. Disease management The virus is sensitive to all standard medical disinfectants. Cats with suspected H5N1 infection should be kept in strict isolation. Owners should be advised to confine the cat to a separate room prior to bringing it to the veterinary clinic. Vaccination and disease prevention No H5N1 vaccines are commercially available for cats. In the event of confirmed cases of H5N1 avian influenza in birds in the area, owners should keep their cats indoors until further information is available, and follow official regulations
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| 25. |
- Berg, Sven
(författare)
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A study of sample withdrawal for lubricated systems : Part 1: Influence of flow characteristics, sampling techniques and locations
- 2001
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Ingår i: Industrial Lubrication and Tribology. - : Emerald. - 0036-8792 .- 1758-5775. ; 53:1, s. 22-31
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Tidskriftsartikel (refereegranskat)abstract
- The wear of a machine element, whether it is due to fatigue or abrasive wear, will add contaminants in the form of particulates to the system. If a machine element is starting to wear out it will produce a large amount of particles and it will finally break down. Since this can be very costly, one can establish the need to monitor the system so that one can foresee failure. There are many different ways to monitor a system, e.g. measurements of the temperature, pressure, vibrations and the degree of contamination. The purpose of contamination control is to extend the life of a component and thereby save money. When monitoring a system it is very important that the monitoring control instrument should give the right output. One important factor in achieving this is the withdrawal of a representative oil sample. In this paper an investigation of where and how to take a representative sample is performed using Stokes' law and the migration of spheres in a channel. A generalised sedimentation chart for diffe rent oils and particles is introduced. Sampling routines for proper sample withdrawal are also presented
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| 26. |
- Berg, Stefan, 1959, et al.
(författare)
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Rash and Fever since Two Weeks of Age : Chapter 102
- 2019
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Ingår i: Pediatric Immunology. A Case-Based Collection with MCQs. Rezaei, N. (red.). - Cham : Springer Nature. - 9783030212629 ; , s. 539-543
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Cryopyrin-associated periodic syndrome (CAPS) is an umbrella term today used for three formerly described conditions in order of increasing severity familial cold autoinflammatory syndrome (FCAS), Muckle-Wells syndrome (MWS), and chronic infantile neurologic cutaneous and articular syndrome (CINCA), also known as neonatal-onset multisystem inflammatory disease (NOMID) CAPS is an autosomal dominant disease that starts early in life Mutations in CAPS give rise to a gain-of-function in the NLRP3 inflammasome Somatic mosaicism should be considered in patients with clinical CAPS and no mutation detected in the NLRP3 with Sanger sequencing CAPS is characterized by a varying degree of systemic inflammation, urticaria-like rash, musculoskeletal symptoms, and a risk of amyloidosis and neurologic sequelae Treatment with IL-1 blockade is generally very effective in CAPS
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| 27. |
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| 28. |
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| 29. |
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| 30. |
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| 31. |
- Bergström, Christer
(författare)
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Numerical Modelling of Fuel Sprays
- 1999
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The way the fuel is introduced into the combustion chamber is one of the most important parameters for the power output and the generation of emissions in the combustion of liquid fuels. The interaction beween the turbulent gas flow field and the liquid fuel droplets, the vaporisation of them and the mixing of the gaseous fuel with the ambient air that are vital parameters in the combustion process. The use of numerical calculations is an important tool to better understand these complex interacting phenomena. This thesis reports on the numerical modelling of fuel sprays in non-reacting cases using an own developed spray module. The spray module uses the stochastic parcel method to represent the spray. The module was made in such manner that it could by coupled with different gas flow solver. Results obtained from four different gas flow solver are presented in the thesis, including the use of two different kinds of turbulence models. In the first part the spray module is coupled with a k-epsilon based 2-D cylindrical gas flow solver. A thorough sensitivity analysis was performed on the spray and gas flow solver parameters, such as grid size dependence and sensitivity to initial values of k-epsilon. The results of the spray module were also compared to results from other spray codes, e.g. the well known KIVA code. In the second part of this thesis the spray was injected into a turbulent and fully developed crossflow studied. The spray module was attached to a LES (Large Eddy Simulation) based flow solvers enabling the study of the complex structures and time dependent phenomena involved in spray in crossflows. It was found that the spray performs an oscillatory motion and that the Strouhal number in the wake was about 0.1. Different spray breakup models were evaluated by comparing with experimental results.
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| 32. |
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| 33. |
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| 34. |
- Berlin, Jonas, et al.
(författare)
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Trajectory Generation for Mobile Robots in a Dynamic Environment using Nonlinear Model Predictive Control
- 2021
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Ingår i: IEEE International Conference on Automation Science and Engineering. - 2161-8070 .- 2161-8089. ; 2021-August, s. 942-947
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Konferensbidrag (refereegranskat)abstract
- This paper presents an approach to collision-free, long-range trajectory generation for a mobile robot in an industrial environment with static and dynamic obstacles. For the long-range planning a visibility graph together with A is used to find a collision-free path with respect to the static obstacles. This path is used as a reference path to the trajectory planning algorithm that in addition handles dynamic obstacles while complying with the robot dynamics and constraints. A Nonlinear Model Predictive Control (NMPC) solver generates a collision-free trajectory by staying close to the initial path but at the same time obeying all constraints. The NMPC problem is solved efficiently by leveraging the new numerical optimization method Proximal Averaged Newton for Optimal Control (PANOC). The algorithm was evaluated by simulation in various environments and successfully generated feasible trajectories spanning hundreds of meters in a tractable time frame.
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| 35. |
- Birk, Wolfgang, et al.
(författare)
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Pressure and flow control of a pulverized coal injection vessel
- 2000
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Ingår i: IEEE Transactions on Control Systems Technology. - : Institute of Electrical and Electronics Engineers (IEEE). - 1063-6536 .- 1558-0865. ; 8:6, s. 919-929
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Tidskriftsartikel (refereegranskat)abstract
- This paper deals with model-based pressure and flow control of a fine coal injection vessel for the use of the blast furnace process. A control system should be in place to maintain a constant coal mass flow from the injection vessel to the blast furnace, since irregularities in the coal mass flow cause significant variations in the hot metal quality. By means of system modeling, the structure and behavior of the coal injection vessel are analyzed. It is shown that by use of a model-based design, the control objectives can be reached and the control performance can be significantly improved compared to the proportional integral (PI) controllers. Alternative control strategies are discussed and compared with the conventional design. The linear quadratic Gaussian (LQG) design method is used to design a multi-input multi-output (MIMO) controller which is validated through experiments on the coal injection plant at SSAB Tunnplat, Lulea, Sweden.
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| 36. |
- Bjärnborg, Karolina, et al.
(författare)
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Large spinel grains in a CM chondrite (Acfer 331): Implications for reconstructions of ancient meteorite fluxes
- 2013
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Ingår i: Meteoritics and Planetary Science. - : Wiley. - 1086-9379. ; 48:2, s. 180-194
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Tidskriftsartikel (refereegranskat)abstract
- By dissolving 30400kg of marine limestone in HCl and HF acid, our group has previously recovered common relict chromite grains (approximately 63250m) from ordinary chondritic micrometeorites that fell on ancient sea floors, up to 500Myr old. Here, we evaluate if CM group carbonaceous chondritic material, which makes up an important fraction of the micrometeorite flux today, contains analogous grains that can be searched for in acid residues. We dissolved 8g of CM2 meteorite Acfer 331 in HF, which yielded a characteristic assemblage of both transparent Mg-Al- and opaque Cr-spinels >28m. We find on average 4.6 and 130 Mg-Al-spinel grains per gram in the 63250 and 2863m size fractions, respectively. These grains are mostly pink or colorless, and often characterized by heterogeneous Cr-content. Black, opaque Cr-spinel grains are absent from the >63m fraction, but in the 2863m fraction we find approximately 65 such grains per gram meteorite. The individual grains have a characteristic composition, with heterogeneous major element compositions (e.g., 44.461.7wt% Cr2O3), but narrow ranges for maximum TiO2 (0.61.6wt%) and V2O3 (0.51.0wt%) concentrations. The content of spinel grains in the 2863m fraction of CM meteorites appears comparable at the order of magnitude level with the content of >63m sized chromite grains in fossil L-chondrites from Ordovician limestone. Our approach of recovering meteoritic spinel from sediment may thus be extended to include CM meteorites, but the smaller size fraction of the acid residues should be searched.
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| 37. |
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| 38. |
- Björklund, Maria, et al.
(författare)
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The shades of green in retail chains' logistics
- 2014. - 1
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Ingår i: Sustainable logistics. - : Emerald Group Publishing Limited. - 9781784410629 - 9781784410612 ; , s. 83-112
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Bokkapitel (refereegranskat)abstract
- PurposeThis study aims to illustrate how retail chains with a green image align sustainable logistics actions, logistics measurements and contracts with logistics service providers (LSPs), and to develop a classification model that allows for a description of the various shades of green within companies.Design/methodology/approachWe carried out a multiple case study of four retail chains with a green image operating in the Swedish market, collecting empirical data from the retail chains’ sustainability reports and home pages and conducting interviews with logistics, transportation and supply chain managers.FindingsBased on the literature, we developed a classification model for judging green image, green logistics actions, green measurements and green contracts. The model is used to illustrate the different shades of green found within the respective retail chains. A green image seems well-aligned with green logistics actions. However, there are more levels to judge, and the measurement systems are not sufficiently developed to track green logistics actions. Contract handling is more developed among retail chains than measurements, which is positive, as this is a way of ensuring that LSPs are involved. In our classification model, greenwashing can be judged in a more nuanced way, delving deeper under the surface.Research limitations/implicationsThe provided classification model adds to our knowledge and illustrates the alignment within companies’ sustainable logistics. The robustness of the model can be strengthened by applying it to a larger number of cases and by continually validating its content and evaluation criteria.Practical implicationsThe study’s main practical contribution is the classification model, which may potentially serve as a method for managers to easily judge the green alignment of a retail chain’s logistics.Originality/valueFew empirical studies capture how retail chains measure environmental logistics performance, and even fewer concern contracts stipulating the environmental demands placed on LSPs.
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| 39. |
- Bohlin, Henrik, 1961-
(författare)
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Universal moral standards without an Archimedean point : Hume's refutation of relativism in "A Dialogue"
- 2013
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Ingår i: Philosophy. - Cambridge, Storbritannien. - 0031-8191 .- 1469-817X. ; 88:4, s. 593-606
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Tidskriftsartikel (refereegranskat)abstract
- An interpretation and evaluation is offered of Hume’s argument on cultural relativism in the essay ‘A Dialogue’. It is argued that Hume sets forth a typology of moral disagreement and for each type disputes the relativist conclusion that right and wrong varies between nations or historical epochs. When there are conflicting views on a moral matter, then either one side can be shown right and the other wrong, by arguments from principles which both sides accept, or more than one reasonable view can exist on the matter, according to the standards of both sides, or the disagreement concerns a morally indifferent matter, or the moral sentiments of at least one disputant are distorted (perverted, ‘artificial’). It is concluded that Hume commits himself to a particular form of meta-ethical relativism but not to normative relativism, the idea that what is wrong in one culture can be right in another. When ‘artificial’ moral sentiments are involved, one cannot resolve disagreement by arguments that are valid for everyone, or even for every ideally rational thinker. Nevertheless, there are universal standards for right and wrong, valid independently of any particular culture or tradition.
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| 40. |
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| 41. |
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| 42. |
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| 43. |
- Bostanci, N, et al.
(författare)
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Precision periodontal care: from omics discoveries to chairside diagnostics
- 2023
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Ingår i: Clinical oral investigations. - : Springer Science and Business Media LLC. - 1436-3771. ; 27:3, s. 971-978
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Tidskriftsartikel (refereegranskat)abstract
- The interface of molecular science and technology is guiding the transformation of personalized to precision healthcare. The application of proteomics, genomics, transcriptomics, and metabolomics is shaping the suitability of biomarkers for disease. Prior validation of such biomarkers in large and diverse patient cohorts helps verify their clinical usability. Incorporation of molecular discoveries into routine clinical practice relies on the development of customized assays and devices that enable the rapid delivery of analytical data to the clinician, while the patient is still in session. The present perspective review addresses this topic under the prism of precision periodontal care. Selected promising research attempts to innovate technological platforms for oral diagnostics are brought forward. Focus is placed on (a) the suitability of saliva as a conveniently sampled biological specimen for assessing periodontal health, (b) proteomics as a high-throughput approach for periodontal disease biomarker identification, and (c) chairside molecular diagnostic assays as a technological funnel for transitioning from the laboratory benchtop to the clinical point-of-care.
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| 44. |
- Brandt, Luca, et al.
(författare)
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Transition of streamwise streaks in zero-pressure-gradient boundary layers
- 2002
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Ingår i: Journal of Fluid Mechanics. - 0022-1120 .- 1469-7645. ; 472, s. 229-261
-
Tidskriftsartikel (refereegranskat)abstract
- A transition scenario initiated by streamwise low- and high-speed streaks in a flat-plate boundary layer is studied. In many shear flows, the perturbations that show the highest potential for transient energy amplification consist of streamwise-aligned vortices. Due to the lift-up mechanism these optimal disturbances lead to elongated streamwise streaks downstream, with significant spanwise modulation. In a previous investigation (Andersson et al. 2001), the stability of these streaks in a zero-pressure-gradient boundary layer was studied by means of Floquet theory and numerical simulations. The sinuous instability mode was found to be the most dangerous disturbance. We present here the first simulation of the breakdown to turbulence originating from the sinuous instability of streamwise streaks. The main structures observed during the transition process consist of elongated quasi-streamwise vortices located on the flanks of the low-speed streak. Vortices of alternating sign are overlapping in the streamwise direction in a staggered pattern. The present scenario is compared with transition initiated by Tollmien-Schlichting waves and their secondary instability and by-pass transition initiated by a pair of oblique waves. The relevance of this scenario to transition induced by free-stream turbulence is also discussed.
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| 45. |
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| 46. |
- Bref, Sara
(författare)
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Porträtt II – Maria Gunnarsson
- 2022
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Ingår i: Äldres lärande. - Stockholm : Natur och kultur. - 9789127460256 ; , s. 100-104
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 47. |
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| 48. |
- Brühning, Ekkehard, et al.
(författare)
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Traffic safety of young people internationally
- 1996
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Ingår i: Proceedings of Road safety in Europe and Strategic Highway Research Program (SHRP). Conference in Prague, the Czech Republic, September 20-22, 1995. - Linköping : Statens väg- och transportforskningsinstitut. ; , s. 13-28
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 49. |
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| 50. |
- Brynge, M, et al.
(författare)
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Maternal levels of acute phase proteins in early pregnancy and risk of autism spectrum disorders in offspring
- 2022
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Ingår i: Translational psychiatry. - : Springer Science and Business Media LLC. - 2158-3188. ; 12:1, s. 148-
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Tidskriftsartikel (refereegranskat)abstract
- Previous research supports a contribution of early-life immune disturbances in the etiology of autism spectrum disorders (ASD). Biomarker studies of the maternal innate (non-adaptive) immune status related to ASD risk have focused on one of the acute phase proteins (APP), C-reactive protein (CRP), with conflicting results. We evaluated levels of eight different APP in first-trimester maternal serum samples, from 318 mothers to ASD cases and 429 mothers to ASD-unaffected controls, nested within the register-based Stockholm Youth Cohort. While no overall associations between high levels of APP and ASD were observed, associations varied across diagnostic sub-groups based on co-occurring conditions. Maternal levels of CRP in the lowest compared to the middle tertile were associated with increased risk of ASD without ID or ADHD in offspring (OR = 1.92, 95% CI 1.08–3.42). Further, levels of maternal ferritin in the lowest (OR = 1.78, 95% CI 1.18–2.69) and highest (OR = 1.64, 95% CI 1.11–2.43) tertiles were associated with increased risk of any ASD diagnosis in offspring, with stronger associations still between the lowest (OR = 3.81, 95% CI 1.91–7.58) and highest (OR = 3.36, 95% CI 1.73–6.53) tertiles of ferritin and risk of ASD with ID. The biological interpretation of lower CRP levels among mothers to ASD cases is not clear but might be related to the function of the maternal innate immune system. The finding of aberrant levels of ferritin conferring risk of ASD-phenotypes indicates a plausibly important role of iron during neurodevelopment.
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