SwePub
Sök i SwePub databas

  Extended search

Träfflista för sökning "WFRF:(Eklund Lars) "

Search: WFRF:(Eklund Lars)

  • Result 1-50 of 534
Sort/group result
   
EnumerationReferenceCoverFind
1.
  •  
2.
  •  
3.
  • Grip, Lars, 1952, et al. (author)
  • From European to National guidelines on heart disease
  • 2011
  • In: Scandinavian Cardiovascular Journal. - : Informa UK Limited. - 1401-7431 .- 1651-2006. ; 45:1, s. 3-13
  • Research review (peer-reviewed)abstract
    • Background/aims. Guidelines from the European Society of Cardiology are important tools for defining and establishing current standards of care for various heart diseases. The aim of the present paper is to describe the process of how these international guidelines may be transformed and implemented at a national level in Sweden. Methods/results. The structure and process behind the national guidelines for heart diseases in Sweden and their relationship to the underlying European guidelines are described and differences between the national and European levels highlighted. We also give examples of how the scientific values of health care measures are weighted against health economic perspectives and integrated in a prioritization process. Compared to the European guidelines, the Swedish national guidelines have a broader economic perspective and aim to ensure that health care is cost effective and provided to all Swedish citizens on equal terms. Discussion. When certain health care measures are implemented, the national process can result in other priorities than could be expected from the European guidelines alone. On the other hand, a forceful implementation may be facilitated by the societal context in which these national guidelines are produced.
  •  
4.
  • Hedström, Brita, et al. (author)
  • Visby Innerstad : En användningsplan
  • 1973
  • Reports (pop. science, debate, etc.)abstract
    • Sedan lång tid föreligger i stort sett enighet om att bevara innerstadens bebyggelse och att anpassa eventuella nytillskott till det redan bestående. Med den inställningen har förändringsprocessen både dämpats och mildrats men ändå inte bragts att avstanna. Förändringar sker ständigt om det också huvudsakligen i smått: de många synbart så anspråkslösa byggnadsåtgärderna adderar efterhand ihop sig till något större och mer genomgripande. Långsamt, nästan omärkligt, ändrar innerstaden sitt ansikte.Ändå är det inte själva husen som förändrats mest utan användningen av dem. Ur funktionell synpunkt har 1950 - och 60-talen har varit något av en omstörtning i innerstadens historia: den har förlorat nästan hälften av de boende, en stor del av detaljhandeln och praktiskt taget helt sin gamla roll som skolcentrum. I gengäld har ytterstaden vuxit ut till ett sammanhängande kilometerbrett bälte. Till stor del av denna funktionella förändring en följd av beslutet att bevara innerstadens bebyggelse. Vad som inte fått plats inom den gamla ramen har etablerats utandör den.Föreliggande arbete vill ge en översiktlig bild av förändringsförloppen, sedda i ett långt tidsperspektiv men med tonvikt på dagsläget. Bebyggelsen tas upp till utförlig granskning men också användningen av den. Det är just samspelet mellan husen och de funtkioner, de fyller, som kan sägas utgöra bokens huvudtema. I de flesta fall är detta sammanhang hus-användning alldeles konfliktfritt och föranleder därför inte heller någon diskussion. Vad som behandlas är de relativt få problematiska fallen, hus som borde rustas upp för att fylla sin uppgift, hus som är olämpligt nyttjade eller inte använda alls. En serie sådana fall tas upp till systematisk genomgång; samtidigt berörs också de trafik - och miljömässiga konsekvenserna. Bokens syfte är alltså klart: den ger ett underlag av fakta för arbetet med att jämka samman byggnader och användningsformer. I den meningen kan skriften kallas en anvädningsplan för Visby innanför murarna.Arkitekturskolanas arbete har bedrivitis parallellt med den kommunala Innerstadskommitténs verksamhet. Något organiserat samarbete har inte förekommit med de informella kontakterna har varit både täta och goda. Att likheterna mellan Innerstadskommittén och Arkitekturskolans slutsatser blivit så pass stora, kan tillskrivas en gemensam helhetssyn.En av Arkitekturskolans elever, arkitekt Lars-Ingvar Larsson, har tidigare självständigt genomfört en undersökning av förändringar i innerstaden 1945-70- Denna studie publicerats separat och bör uppfattas som ett komplement till den hör föreliggande.Förutom de i innehållsförteckningen nämnda har ytterligare några aktivt medverkat i arbetet. Studiet av trafikfrågorna i innerstaden, i hamnen och öster om ringmuren leddes av Åke Claesson, I fältstudier och diskussioner medverkande Göran Månsson.Arkitekturskolan har fått god hjälp av ett antal initierade personer i Visby. Särskild tacksamhet är vi skyldiga byggnadsnämnden ordförande Henning Jacobson, kommunalrådet C B Stenström, stadsarkitekten Måns Hagbergm f. länsbostadsdorektören Åke Malmberg och landsantikvarien Gunnar Svahnström. I boken publiceringskostnaderna har ekonomiskt bidrag lämnats av Gotlands kommun och Riksantikvarieämbetet.Boken har redigerats av Sture Balgård och Ann Mari Westerlind med hjälp av Henrik O Andersson, Bo Ek, Göran Lindahl, Fredrik von Platen, John Sjöström Gunnar Westerlind och Hans Wetterfors.Skeppsholmen, Stockholm, sommaren 1973.Arkitekturskolans lärare och elever.
  •  
5.
  •  
6.
  •  
7.
  • Ackum, Susanne, et al. (author)
  • Vi tar fram en handfast plan för en omstart av Sverige
  • 2020
  • In: Dagens Nyheter. - 1101-2447. ; :27 april
  • Journal article (pop. science, debate, etc.)abstract
    • Det är /.../ fullt möjligt att tänka strategiskt och systematiskt även i brinnande kris. Omstartskommissionen hoppas kunna bidra till fokus, analys och konkreta policyförslag för att stödja Sveriges långsiktiga inriktning. Vi kommer att under våren och sommaren anordna seminarier och hearings om vårt arbete, delrapporter ska läggas fram – och när budgetarbetet börjar och Riksdagen öppnar, vill vi kunna bidra med en rejäl och handfast plan för hur vi omstartar Sverige.
  •  
8.
  • Bengt, Halling, 1959- (author)
  • Lean Implementation : the significance of people and dualism
  • 2013
  • Licentiate thesis (other academic/artistic)abstract
    • Lean, with its origins at the Toyota Motor Company, is a concept that is known to increase effectiveness in manufacturing. The Lean concept is now argued to be relevant not only in manufacturing but in service and health-care delivery as well. The reported results of Lean implementation efforts are divided. There are reports that most of the Lean implementation efforts are not reaching the goal; on the other hand, there are reports of promising results. The divided results from Lean implementation efforts show how important it is to research and identify factors that are barriers to successful implementation of Lean. This thesis aims to contribute knowledge about barriers to Lean implementation by collecting empirical findings from manufacturing and health care and structuring the perceived barriers and difficulties to Lean implementation. My first study aimed to compare similarities and divergences in barriers to Lean described by key informants in manufacturing and health care. The data was collected via semi-structured interviews. Findings showed that the perceived difficulties and barriers are much the same in manufacturing and health care. The second study was a case study at a manufacturing firm, researching how the views on Lean of the managers implementing Lean influence its implementation. Data was collected via semi-structured interviews with 20 individuals and covered all hierarchical management levels in the company. Findings showed that managers' views on Lean influence the implementation but also that learning during the implementation process can alter managers' views of Lean. The third study aimed to research how management of Lean is described in the literature. This was done through a literature review. The findings showed that Lean management is a matter of dualism, consisting of two complementary systems of action, management and leadership, which are related to the two basic principles of Lean, continuous improvement and respect for the people.
  •  
9.
  • Braunerhjelm, Pontus, 1953-, et al. (author)
  • Så startar Sverige om
  • 2020
  • Other publication (pop. science, debate, etc.)
  •  
10.
  •  
11.
  • Eklund, Johan, et al. (author)
  • Inflicted Damages related to Folding Procedures on Digital Prints
  • 2002
  • Reports (other academic/artistic)abstract
    • A study has been performed with the purpose of analysing different folding techniques and its functionality in a climate optimised for digital printing. Coated papers of stock weight 160g/m2, developed for digital printing, were printed in a multifunctional copier and folded with different methods. Results show that using a creasing rule substantially improves the quality. Other factors like folding method, time from print to fold, fibre orientation and toner layer presented small variations regarding fold print quality.   The performed study is the start-up of a systematic mapping of folding of digital prints. Future studies will include a wide range of papers, printers, digital presses and finishing equipment. The tests will mainly be performed in a climate- controlled laboratory, giving possibility to analyse folding performance in different air humidity. The aim is to provide new knowledge about finishing of digital prints, as well as solutions to existing problems.  
  •  
12.
  • Frodelius, Jenny, 1978- (author)
  • Thick and Thin Ti2AlC Coatings
  • 2010
  • Doctoral thesis (other academic/artistic)abstract
    • This Thesis explores the deposition techniques of magnetron sputtering and high velocity oxy-fuel (HVOF) spraying for Ti2AlC as a promising high-temperature material. Magnetron sputtering aims at producing thin (≤1 μm) Ti2AlC films of high crystal quality for use as a model system in understanding the material’s basic properties. HVOF is a new method for deposition of thick (≥200 μm) coatings by spraying Ti2AlC powder, with the aim of transferring the good bulk properties to coatings. The oxidation behavior of Ti2AlC coatings has been investigated for temperatures up to 1200 °C in air. As-deposited Ti2AlC(0001) thin films decompose into TiC during vacuum annealing at 700 °C by out-diffusion of Al as shown by x-ray diffraction analysis. The release of Al starts already at 500 °C in ambient air as driven by aluminum oxide formation on the film surface where the oxide initially forms clusters as observed by electron microscopy. While sputtering from a Ti2AlC target is simpler than by using different elemental targets, the resulting film composition differs from the target stoichiometry. This is due to differences in energy and angular distribution of the sputtered species and evaporation of Al at substrate temperatures above 700 °C. The composition can be compensated for by adding Ti to bind the Al and obtain phase-pure Ti2AlC coatings. For HVOF, I demonstrate how the total gas flow of a H2/O2 mixture (441-953 liter/min) and the powder grain size (30-56 μm) determine the thickness, density, and microstructure of the coatings. High gas flow and small grain size yield thick coatings of 210 μm with a low porosity of 2-8 % and a tensile stress of ≥80 MPa. A fraction of the Ti2AlC powder decomposes during spraying into TiC, Ti3AlC2, and Ti-Al alloys. The coatings also contain as much as 25 at.% O since the powder partly oxidizes during the spraying process. Increasing the powder size and decreasing the total gas flow yield a higher amount of Ti2AlC, but produces thinner coatings with lower cohesion. Post-annealing of the coatings at 900 °C in vacuum increases the Ti2AlC content due to a reversible phase transformation of the as-sprayed material. The high oxygen content, however, hinders the coating to completely transform into Ti2AlC and deteriorates its oxidation resistance. The work thus offers insights to the key parameters for optimizing Ti2AlC coating processing.
  •  
13.
  •  
14.
  •  
15.
  • Halim, Joseph, et al. (author)
  • Transparent Conductive Two-Dimensional Titanium Carbide Epitaxial Thin Films
  • 2014
  • In: Chemistry of Materials. - : American Chemical Society. - 0897-4756 .- 1520-5002. ; 26:7, s. 2374-2381
  • Journal article (peer-reviewed)abstract
    • Since the discovery of graphene, the quest for two-dimensional (2D) materials has intensified greatly. Recently, a new family of 2D transition metal carbides and carbonitrides (MXenes) was discovered that is both conducting and hydrophilic, an uncommon combination. To date MXenes have been produced as powders, flakes, and colloidal solutions. Herein, we report on the fabrication of similar to 1 x 1 cm(2) Ti3C2 films by selective etching of Al, from sputter-deposited epitaxial Ti3AlC2 films, in aqueous HF or NH4HF2. Films that were about 19 nm thick, etched with NH4HF2, transmit similar to 90% of the light in the visible-to-infrared range and exhibit metallic conductivity down to similar to 100 K. Below 100 K, the films resistivity increases with decreasing temperature and they exhibit negative magnetoresistance-both observations consistent with a weak localization phenomenon characteristic of many 2D defective solids. This advance opens the door for the use of MXenes in electronic, photonic, and sensing applications.
  •  
16.
  • Halim, Joseph, et al. (author)
  • X-ray Photoelectron Spectroscopy Characterization of Two-Dimensional Titanium Metal Carbides (MXenes)
  • 2014
  • Other publication (other academic/artistic)abstract
    • Herein, we report X-ray Photoelectron Spectroscopy (XPS) analysis for cold pressed exfoliated 2D nanocrystals of transition metal carbides, MXenes. MXenes are a recently discovered family of 2D materials produced by selective chemical etching of the A element from MAX phases which are ternary metal carbides and nitrides. The latter has the formula of Mn+1AXn, where M is an early transition metal, A is an A-group element, and X is C and/or N. This study is a comparison between two MXenes, Ti3C2Tx and Ti2CTx, where Tx stands for surface termination groups such as –O, –OH, and –F. Ti3C2Tx and Ti2CTx were prepared by immersion of Ti3AlC2 and Ti2AlC powders in 50% conc. HF. A thorough XPS analysis was performed through peak fitting of high resolution XPS spectra and valence band, VB, spectra analysis. The effect of Ar sputtering as well as the number of layers n was the primarily interest of this study. According to the peak fitting analysis, both phases contain the following species, Ti–C, C–C, Ti–F, Ti–O and Ti–OH resulting in the following chemical formulas: Ti3C2(OH)x(O)y(F)z and Ti2C(OH)x(O)y(F)z. Comparing the VB spectra with the DOS calculations show the valance band spectra is actually a mixture of MXene with various terminations of OH, O and F. Before Ar+ sputtering both phases show a large percentage of fluorinated-TiO2 which is due to MXene surface oxidation as well as CHx, C-O and COO groups arising from either surface contaminations or due to drying the etched powders in ethanol after washing the powder of the HF acid. According to the VB spectra, it is shown that the fluorinated TiO2 is actually a mixture of anatase and rutile. The number of layers, n, also plays a role; the lower n, the more the MXene is prone to oxidation.
  •  
17.
  • Hansson, Lars, et al. (author)
  • Arbetsinriktad rehabilitering
  • 2005
  • In: Att leva med psykiska funktionshinder : livssituation och effektiva vård- och stödinsatser. - 9789144033167 ; , s. 233-233
  • Book chapter (pop. science, debate, etc.)
  •  
18.
  •  
19.
  • Joshi, Peter K, et al. (author)
  • Directional dominance on stature and cognition in diverse human populations
  • 2015
  • In: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 523:7561, s. 459-462
  • Journal article (peer-reviewed)abstract
    • Homozygosity has long been associated with rare, often devastating, Mendelian disorders, and Darwin was one of the first to recognize that inbreeding reduces evolutionary fitness. However, the effect of the more distant parental relatedness that is common in modern human populations is less well understood. Genomic data now allow us to investigate the effects of homozygosity on traits of public health importance by observing contiguous homozygous segments (runs of homozygosity), which are inferred to be homozygous along their complete length. Given the low levels of genome-wide homozygosity prevalent in most human populations, information is required on very large numbers of people to provide sufficient power. Here we use runs of homozygosity to study 16 health-related quantitative traits in 354,224 individuals from 102 cohorts, and find statistically significant associations between summed runs of homozygosity and four complex traits: height, forced expiratory lung volume in one second, general cognitive ability and educational attainment (P < 1 × 10(-300), 2.1 × 10(-6), 2.5 × 10(-10) and 1.8 × 10(-10), respectively). In each case, increased homozygosity was associated with decreased trait value, equivalent to the offspring of first cousins being 1.2 cm shorter and having 10 months' less education. Similar effect sizes were found across four continental groups and populations with different degrees of genome-wide homozygosity, providing evidence that homozygosity, rather than confounding, directly contributes to phenotypic variance. Contrary to earlier reports in substantially smaller samples, no evidence was seen of an influence of genome-wide homozygosity on blood pressure and low density lipoprotein cholesterol, or ten other cardio-metabolic traits. Since directional dominance is predicted for traits under directional evolutionary selection, this study provides evidence that increased stature and cognitive function have been positively selected in human evolution, whereas many important risk factors for late-onset complex diseases may not have been.
  •  
20.
  •  
21.
  • Lai, Chung-Chuan, et al. (author)
  • Structural and chemical determination of the new nanolaminated carbide Mo2Ga2C from first principles and materials analysis
  • 2015
  • In: Acta Materialia. - : PERGAMON-ELSEVIER SCIENCE LTD. - 1359-6454 .- 1873-2453. ; 99, s. 157-164
  • Journal article (peer-reviewed)abstract
    • Following our recent discovery of a new nanolaminated carbide, Mo2Ga2C, we herein present a detailed structural and chemical analysis of this phase based on ab initio calculations, X-ray photoelectron spectroscopy, high resolution scanning transmission electron microscopy, and neutron powder diffraction. Calculations suggest an energetically and dynamically stable structure for C in the octahedral sites between the Mo layers, with Ga bilayers - stacked in a simple hexagonal arrangement - between the Mo2C layers. The predicted elastic properties are below those of the related nanolaminate Mo2GaC. The predicted structure, including lattice parameters and atomic positions, is experimentally confirmed. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
  •  
22.
  •  
23.
  • Lauridsen, Jonas, et al. (author)
  • Deposition of Ti-Si-C-Ag nanocomposite coatings as electrical contact material
  • 2010
  • In: Proceedings of the 56th IEEE Holm Conference on Electrical Contacts (HOLM). - : IEEE. - 9781424481743 ; , s. 288-294
  • Conference paper (other academic/artistic)abstract
    • This paper is a brief review of our recent work and a follow up study on nanocomposite coatings comprising nanocrystalline TiC embedded in an amorphous SiC matrix (nc-TiC/a-SiC) with and without Ag additions applied as electrical contacts. These coating materials are deposited at very high deposition rates (>10 μm/h), to meet industrial demands of high productivity. Here we consider Ti-Si-C-Ag nanocomposite coatings with Ag content in the range of 0-22 at.% deposited in a pilot-plant or an industrial deposition system by dc magnetron sputtering from compound targets onto Si(100) and SiO2(100) substrates. The microstructure, electrical, and mechanical properties of the coatings were studied with transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, electrical contact resistance, resistivity, and nanoindentation measurements. Varying the deposition parameters bias and pressure within ranges typical of coating processing had no effect on the structure. A variation was, however, observed for the contact resistance, that was determined to be in the range 400-900 mΩ at a contact force between 1.9-2.65 N. The coatings with highest Ag content had the lowest contactresistance.
  •  
24.
  • Lu, Yingchang, et al. (author)
  • New loci for body fat percentage reveal link between adiposity and cardiometabolic disease risk
  • 2016
  • In: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 7
  • Journal article (peer-reviewed)abstract
    • To increase our understanding of the genetic basis of adiposity and its links to cardiometabolic disease risk, we conducted a genome-wide association meta-analysis of body fat percentage (BF%) in up to 100,716 individuals. Twelve loci reached genome-wide significance (P<5 × 10(-8)), of which eight were previously associated with increased overall adiposity (BMI, BF%) and four (in or near COBLL1/GRB14, IGF2BP1, PLA2G6, CRTC1) were novel associations with BF%. Seven loci showed a larger effect on BF% than on BMI, suggestive of a primary association with adiposity, while five loci showed larger effects on BMI than on BF%, suggesting association with both fat and lean mass. In particular, the loci more strongly associated with BF% showed distinct cross-phenotype association signatures with a range of cardiometabolic traits revealing new insights in the link between adiposity and disease risk.
  •  
25.
  • Renström, Jonas (author)
  • Senior Managers and Lean- The importance of becoming a practitioner
  • 2014
  • Licentiate thesis (other academic/artistic)abstract
    • Considered to be one of the most influential paradigms in manufacturing, Lean has developed and expanded beyond the shop floor and manufacturing environment of the auto industry. Lean is considered to be applicable throughout organizations and other industries besides manufacturing. Interest in both research and implementation of the Lean concept, heavily influenced by Toyota Motor Company, is said to continue to increase despite the fact that the concept is said to be both ambiguous and difficult to implement. Two main traditions of Lean are said to exist: “toolboxLean” and “Lean thinking.” The particular translation of the concept that is accepted will influence management’s approach in implementing a Lean way of working. The Toyota Motor Company, where Lean originates, is described as a learning organization. Therefore, a management approach and leader behavior supporting organizational learning would be required to successfully implement an enterprise system inspired by both the Toyota Production System and Lean. This thesis approaches the Lean concept through an organizational learning perspective, thereby highlighting the importance of knowledge of organizational learning in a Lean development effort. Difficulties regarding Lean implementations have been shown to often occur due to the overlooked but crucial differences in approach in management. There is, however a stated gap in the literature on Lean production regarding management. The purpose of this thesis is to explore senior management’s ability to implement and sustain a Lean-based enterprise system. Three studies are included in the thesis. The first study focuses on how the view on Lean among managers implementing Lean affects its implementation. The study was performed as a case study and conducted at a larger, international manufacturing company. The study covered management levels from shop floor manager to the president of the company. Findings show that all management levels had a similar view of Lean and that this influenced the implementation. The first study further showed that the view on Lean may develop and change during an implementation, revealing unforeseen managerial and organizational challenges and obstacles.The second study focused on how management of Lean is described in the existing literature. The results revealed a dualistic complementarity between leadership and management, which can be seen as reflected in the two foundational Toyota principles of continuous improvement and respect for people. This duality can also be found in descriptions of prerequisites for organizational learning where the ability to combine transactional and transformational leadership is considered a success factor. The third study focused on implications for senior management and aimed to research senior managers’ ability to support a Lean implementation process. The study is based on interviews with eight senior managers. The study revealed four main managerial obstacles to Lean implementation. Lack of initial competence evaluation and ensuing competence development for senior management was found to be a central obstacle to Lean implementation. Main conclusions in the thesis are that initial understanding of the aims of a Lean implementation, and the ensuing implications for the organization is central in order to be able to support the development. Additionally, initial senior management competence development is indicated to be vital in order to ensure the ability to understand the organizational and managerial implications brought on by a Lean implementation. Leading with action is indicated as providing an opportunity for senior management competence development.
  •  
26.
  • Rosen, Lars, 1962, et al. (author)
  • Riskvärdering vid val av åtgärdsstrategi : Beskrivning av metoder och exempel
  • 2006
  • Reports (other academic/artistic)abstract
    • Naturvårdsverket uppskattar att det idag finns ca 40 000 förorenade områden i Sverige. Statens kostnader för efterbehandling har hittills uppgått till ca 1 miljard kronor, men för att åtgärda de mest allvarligt förorenade områdena kommer det uppskattningsvis att krävas ytterligare ca 45 miljarder kronor. Med hänsyn till det stora antalet förorenade områden och de höga kostnaderna är det ur ett hållbarhetsperspektiv nödvändigt att inkludera ekonomiska riskvärderingar i den riskvärderingsprocess som utgör ett viktigt beslutsunderlag i hanteringen av förorenade områden. Behovet av ekonomiska värderingar av miljöskyddsarbete ges också uttryck för i Miljöbalkens allmänna hänsynsregler om rimlighet och skälighet. Det huvudsakliga syftet med rapporten är att ge en erfarenhetsåterföring av, och underlag för, en ekonomisk riskvärdering som underlag för en kostnadseffektiv efterbehandling. I rapporten diskuteras och redovisas hur olika värderingsmetoder kan användas för att ekonomiskt värdera de förändrade risker för miljö- och hälsoeffekter som kan åstadkommas vid en efterbehandling. Sådana värderingar kan användas i ekonomiska analyser (exempelvis beslutsanalyser och kostnads-nytto analyser) tillsammans med andra ekonomiska poster i en bedömning av det ekonomiska utfallet av en efterbehandlingsinsats. Inledningsvis beskrivs och diskuteras grunderna för riskbedömning av förorenade områden i Sverige. Härvid jämförs acceptabla risknivåer i Sverige med de som används i andra länder och inom andra sektorer i samhället. En slutsats är att vi i Sverige använder ett likartat synsätt och liknande modeller som i flera andra länder för att beräkna riktvärden för förorenad jord, men att olika antaganden m.m. gör att riktvärdena varierar en del mellan länderna. Det kan också konstateras att de acceptabla risknivåerna för skada på människa och miljö är likartade mellan de jämförda länderna. Vid jämförelsen av riskacceptansen inom andra sektorer i samhället framkommer emellertid stora skillnader, vilket tyder på olika värderingsgrunder för risker inom olika sektorer. Intressanta exempel är jämförelserna med arbets- och boendemiljö där de acceptabla hälsorisknivåerna är 100–1000 gånger högre än inom förorenade områden. Därefter beskriver rapporten ett ramverk för ekonomisk riskvärdering med beslutsanalys och kostnads-nytto analys som centrala begrepp. Grundläggande värderingsteori och olika metoder för att skatta det ekonomiska värdet av en miljöförbättring beskrivs därefter. Användningen av metoderna illustreras med fallstudier, vid Wockatz-området i Göteborg och Oskarshamns hamn, där möjligheter och svårigheter med ekonomiska miljöriskvärderingar beskrivs.Arbetet visar att dagens angreppssätt, som innebär jämförelser mot riktvärden snarare än kvantifiering av faktiska risknivåer, inte går särskilt bra ihop med ekonomisk värdering. Orsaken är att utgångspunkten för ekonomisk riskvärdering är kännedom om de hälso- och miljöriskförändringar som en efterbehandlingsåtgärd skulle leda till, samt att det är möjligt att kvantifiera dessa förändringar. Idealt bör det således finnas kvantitativ kunskap om både vilka risker som föreligger i utgångsläget och hur dessa skulle påverkas av en viss åtgärd. Detta illustrerades genom fallstudierna. För Wockatz-fallet beräknades hälsoriskernas storlek före och efter en efterbehandlingsåtgärd. Beräkningarna möjliggjorde en ekonomisk riskvärdering (i form av räkneexempel). Eftersom det var fråga om dödsrisker kunde en värdering av riskminskningen ske med hjälp av en skattning av värdet av att spara ett statistiskt liv. I Oskarshamnsfallet gick det däremot inte att fastställa någon miljö- eller hälsoriskminskning. Härvid visades istället på möjligheten att utföra en probabilistisk värdering som gällde sannolikheten att åtgärder leder till att ett eko-toxikologiskt riktvärde underskrids. Denna värdering låter sig dock inte enkelt tolkas som en riskvärdering. Vidare illustrerade Wockatz-fallet ett annat sätt på vilket ekonomisk värdering kan kopplas till riktvärden, trots att kopplingen mellan riktvärden och faktiska risker är svag. Riktvärdena är nämligen en avspegling av den markanvändning som avses bedrivas och har därför en direkt påverkan på markens värde. Att studera fastighetsprisförändringar till följd av efterbehandling kan därför i princip vara ett sätt att ekonomiskt värdera att ett riktvärde inte överskrids. Att tolka detta i termer av riskvärdering i mer bokstavlig mening kan dock vara långsökt. Det handlar mer om värdet av möjligheten att kunna utnyttja mark för olika ändamål. Arbetet visar hur en ekonomisk riskvärdering kan struktureras med hjälp av besluts- och kostnads-nyttoanalys. En väl strukturerad metodik för riskvärderingar innebär att värderingsarbetet blir transparent så att olika intressenter ges möjlighet att förstå, men även ifrågasätta, hur de olika värderingarna gjorts. Strukturen innebär också att beslutsfattaren tvingas beakta värderingsfrågor som annars riskerar att glömmas bort eller bortses ifrån för att de upplevs som alltför svåra. Det genomförda arbetet visar dock att flera svårigheter finns för att väl fungerande ekonomiska riskvärderingar skall kunna utföras. Viktiga insatser för att möjliggöra sådana värderingar föreslås vara: Kvantifiering av den faktiska risknivån innan efterbehandling så att också den förväntade riskreduktionen till följd av efterbehandling kan kvantifieras. Metoder för sådana riskberäkningar finns utvecklade i flera andra länder, exempelvis USA och Danmark. En öppen diskussion om acceptansnivåer och orsakerna till skillnader i acceptabla risknivåer mellan förorenade områden och andra sektorer i samhället. För att åstadkomma relevanta värderingar av minskade risker inom förorenade områden bör dessa kunna ställas i relation till hur långt man anser sig behöva driva riskreduktionen inom andra sektorer i samhället.Tillämpning och erfarenhetsåterföring av verkliga riskvärderingar. Mycket få ekonomiska riskvärderingar har utförts inom förorenade områden i Sverige och erfarenheterna är därmed begränsade. En mera omfattande tillämpning skulle ge förbättrade kunskaper, dels om olika metoders lämplighet, och dels om vad ekonomisk riskvärdering kan tillföra beslutsfattande inom hantering av förorenade områden. 
  •  
27.
  •  
28.
  • Slotte, Christer, 1954, et al. (author)
  • Four-Millimeter Implants Supporting Fixed Partial Dental Prostheses in the Severely Resorbed Posterior Mandible: Two-Year Results.
  • 2011
  • In: Clinical implant dentistry and related research. - : Wiley. - 1708-8208 .- 1523-0899.
  • Journal article (peer-reviewed)abstract
    • Background: Reduced alveolar bone volume complicates implant dentistry. Purpose: In this prospective multicenter study, a new, 4-mm long Straumann SLActive implant (Ø 4.1mm) supporting a fixed dental prosthesis (FDP) in the severely resorbed posterior mandible was evaluated for two years. Material and Methods: Thirty-two patients (11 men, 21 women; mean age 64.1 years) participated. Ten to 12 weeks after single-stage surgery, a screw-retained FDP was attached to three or four 4-mm implants. Results and Discussion: One hundred implants were inserted. Three failed at surgery and four were lost before loading. Twenty-eight patients received FDPs (93 implants). Two patients were discontinued because of secondary exclusion criteria; therefore, 26 patients were followed up from baseline (BL). After 1 year, one patient insisted on removal of all implants and one patient died because of nonstudy-related complications. Twenty-four patients (87 implants) were eligible for examination 2 years post-loading. All implants were found to be stable [survival rate 95.7% (confidence interval, CI 88.8-98.3) after 1 year and 92.3% (CI 84.5-96.2) after 2 years]. The mean change from BL to 12 months was - 0.43mm (CI 0.31-0.59; p<.001) and from 12 to 24 months - 0.11mm (CI -0.01-0.23; p=.056). The survival rate is only slightly lower than in similar studies on 6 to 8.5mm implants. This may be related to high initial stability and effective use of the residual bone volume with high primary bone-to-implant contact in dense bone structures. The surgical handling of the tested implant was found to be similar to that of implants of common length. However, the preparation procedure must be done with great care to avoid overdrilling. Careful planning and design of the prosthetic construction is mandatory to prevent unfavorable occlusion and avoid harmful shear forces. Conclusion: This study showed that 4mm implants can support an FDP in severely resorbed posterior mandibles for at least 2 years and with healthy peri-implant conditions.
  •  
29.
  • Tengstrand, Olof, et al. (author)
  • Structure and electrical properties of Nb-Ge-C nanocomposite coatings
  • 2014
  • In: Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films. - : American Vacuum Society. - 0734-2101 .- 1520-8559. ; 32:4, s. 041509-
  • Journal article (peer-reviewed)abstract
    • Nb-Ge-C nanocomposite thin films were deposited by dc magnetron sputtering using three elemental targets. The films consist of substoichiometric NbCx in a nanometer-thick matrix of amorphous C and Ge. Films with no Ge contain grains that are elongated in the growth direction with a (111) preferred crystallographic orientation. With the addition of similar to 12 at. % Ge, the grains are more equiaxed and exhibit a more random orientation. At even higher Ge contents, the structure also becomes denser. The porous structure of the low Ge content films result in O uptake from the ambient. With higher C content in the films both the amount of amorphous C and C/Nb-ratio increases. The contact resistance was measured by four-point technique as a function of contact force between 0 and 10 N. The lowest contact resistance (1.7 m Omega) is obtained at 10 N. The resistivity varies between 470 and 1700 mu Omega center dot cm depending on porosity and O content.  
  •  
30.
  • Vikner, Tomas, et al. (author)
  • 5-year associations among cerebral arterial pulsatility, perivascular space dilation, and white matter lesions
  • 2022
  • In: Annals of Neurology. - : John Wiley & Sons. - 0364-5134 .- 1531-8249. ; 92:5, s. 871-881
  • Journal article (peer-reviewed)abstract
    • Objective: High cerebral arterial pulsatility index (PI), white matter lesions (WMLs), enlarged perivascular spaces (PVSs), and lacunar infarcts are common findings in the elderly population, and considered indicators of small vessel disease (SVD). Here, we investigate the potential temporal ordering among these variables, with emphasis on determining whether high PI is an early or delayed manifestation of SVD.Methods: In a population-based cohort, 4D flow MRI data for cerebral arterial pulsatility was collected for 159 participants at baseline (age 64–68), and for 122 participants at follow-up 5 years later. Structural MRI was used for WML and PVS segmentation, and lacune identification. Linear mixed-effects (LME) models were used to model longitudinal changes testing for pairwise associations, and latent change score (LCS) models to model multiple relationships among variables simultaneously.Results: Longitudinal 5-year increases were found for WML, PVS, and PI. Cerebral arterial PI at baseline did not predict changes in WML or PVS volume. However, WML and PVS volume at baseline predicted 5-year increases in PI. This was shown for PI increases in relation to baseline WML and PVS volumes using LME models (R (Formula presented.) 0.24; p < 0.02 and R (Formula presented.) 0.23; p < 0.03, respectively) and LCS models ((Formula presented.) = 0.28; p = 0.015 and (Formula presented.) = 0.28; p = 0.009, respectively). Lacunes at baseline were unrelated to PI.Interpretation: In healthy older adults, indicators of SVD are related in a lead–lag fashion, in which the expression of WML and PVS precedes increases in cerebral arterial PI. Hence, we propose that elevated PI is a relatively late manifestation, rather than a risk factor, for cerebral SVD. 
  •  
31.
  • Vikner, Tomas, et al. (author)
  • Cerebral arterial pulsatility is linked to hippocampal microvascular function and episodic memory in healthy older adults
  • 2021
  • In: Journal of Cerebral Blood Flow and Metabolism. - : Sage Publications. - 0271-678X .- 1559-7016. ; 41:7, s. 1778-1790
  • Journal article (peer-reviewed)abstract
    • Microvascular damage in the hippocampus is emerging as a central cause of cognitive decline and dementia in aging. This could be a consequence of age-related decreases in vascular elasticity, exposing hippocampal capillaries to excessive cardiac-related pulsatile flow that disrupts the blood-brain barrier and the neurovascular unit. Previous studies have found altered intracranial hemodynamics in cognitive impairment and dementia, as well as negative associations between pulsatility and hippocampal volume. However, evidence linking features of the cerebral arterial flow waveform to hippocampal function is lacking. We used a high-resolution 4D flow MRI approach to estimate global representations of the time-resolved flow waveform in distal cortical arteries and in proximal arteries feeding the brain in healthy older adults. Waveform-based clustering revealed a group of individuals featuring steep systolic onset and high amplitude that had poorer hippocampus-sensitive episodic memory (p = 0.003), lower whole-brain perfusion (p = 0.001), and weaker microvascular low-frequency oscillations in the hippocampus (p = 0.035) and parahippocampal gyrus (p = 0.005), potentially indicating compromised neurovascular unit integrity. Our findings suggest that aberrant hemodynamic forces contribute to cerebral microvascular and hippocampal dysfunction in aging.
  •  
32.
  •  
33.
  • Aaij, R., et al. (author)
  • A model-independent measurement of the CKM angle γ in partially reconstructed B±→D∗h± decays with D→K0Sh+h-(h=π,K)
  • 2024
  • In: Journal of High Energy Physics (JHEP). - : Springer. - 1126-6708 .- 1029-8479. ; :2
  • Journal article (peer-reviewed)abstract
    • A measurement of CP-violating observables in B± → D∗K± and B± → D∗π±decays is made where the photon or neutral pion from the D∗ → Dγ or D∗ → Dπ0 decayis not reconstructed. The D meson is reconstructed in the self-conjugate decay modes,D → K0Sπ+π− or D → K0SK+K−. The distribution of signal yields in the D decay phasespace is analysed in a model-independent way. The measurement uses a data sample collectedin proton-proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, corresponding toa total integrated luminosity of approximately 9 fb−1. The B± → D∗K± and B± → D∗π±CP-violating observables are interpreted in terms of hadronic parameters and the CKM angleγ, resulting in a measurement of γ = (92+21−17)◦. The total uncertainty includes the statisticaland systematic uncertainties, and the uncertainty due to external strong-phase inputs. 
  •  
34.
  • Aaij, R., et al. (author)
  • A search for rare B → Dμ+μ− decays
  • 2024
  • In: Journal of High Energy Physics (JHEP). - : Springer. - 1126-6708 .- 1029-8479. ; 2024:2
  • Journal article (peer-reviewed)abstract
    • A search for rare B → Dμ+μ− decays is performed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. No significant signals are observed in the non-resonant μ+μ− modes, and upper limits of B(B0 → D0μ+μ−)< 5.1 × 10−8, B (B+ → D+s μ+μ−) < 3.2 × 10−8, B(B0s → D0μ+μ−)<1.6 × 10−7 and fc/fu · B (B+c → D+s μ+μ−) < 9.6 × 10−8 are set at the 95 % confidencelevel, where fc and fu are the fragmentation fractions of a B meson with a c and u quarkrespectively in proton-proton collisions. Each result is either the first such measurement oran improvement by three orders of magnitude on an existing limit. Separate upper limits arecalculated when the muon pair originates from a J/ψ → μ+μ− decay. The branching fractionof B+c → D+s J/ψ multiplied by the fragmentation-fraction ratio is measured to befc/fu · B(B+c → D+s J/ψ)= (1.63 ± 0.15 ± 0.13) × 10−5,where the first uncertainty is statistical and the second systematic.
  •  
35.
  • Aaij, R., et al. (author)
  • A study of CP violation in the decays B± → [K + K −π+π− ]D h± (h = K, π) and B± → [π+π−π+π− ]D h±
  • 2023
  • In: European Physical Journal C. - : Springer Nature. - 1434-6044 .- 1434-6052.
  • Journal article (peer-reviewed)abstract
    • The first study of CP violation in the decay mode B-+/- -> [K+K-pi(+)pi(-)](D)h(+/-), with h = K, pi, is presented, exploiting a data sample of proton-proton collisions collected by the LHCb experiment that corresponds to an integrated luminosity of 9fb(-1). The analysis is performed in bins of phase space, which are optimised for sensitivity to local CP asymmetries. CP-violating observables that are sensitive to the angle gamma of the Unitarity Triangle are determined. The analysis requires external information on charm-decay parameters, which are currently taken from an amplitude analysis of LHCb data, but can be updated in the future when direct measurements become available. Measurements are also performed of phase-space integrated observables for B-+/- -> [K+K-pi(+)pi(-)](D)h(+/-) and B-+/- -> [pi(+)pi(-)pi(+)pi(-)](D)h(+/-) decays.
  •  
36.
  • Aaij, R., et al. (author)
  • Amplitude analysis of B0? : D0Ds+p - and B plus ? D -Ds plus p plus decays
  • 2023
  • In: Physical Review D. - : American Physical Society. - 2470-0010 .- 2470-0029. ; 108:1
  • Journal article (peer-reviewed)abstract
    • Resonant contributions in B0 & RARR; over bar D0D+s & pi;- and B+ & RARR; D-D+s & pi;+ decays are determined with an amplitude analysis, which is performed both separately and simultaneously, where in the latter case isospin symmetry between the decays is assumed. The analysis is based on data collected by the LHCb detector in proton-proton collisions at center-of-mass energies of 7, 8, and 13 TeV. The full data sample corresponds to an integrated luminosity of 9 fb-1. A doubly charged spin-0 open-charm tetraquark candidate together with a neutral partner, both with masses near 2.9 GeV, are observed in the Ds & pi; decay channel.
  •  
37.
  • Aaij, R., et al. (author)
  • Amplitude Analysis of the B0 → K*0 μ+μ- Decay
  • 2024
  • In: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 132:13
  • Journal article (peer-reviewed)abstract
    • An amplitude analysis of the B0 → K*0μ+μ- decay is presented using a dataset corresponding to an integrated luminosity of 4.7 fb-1 of pp collision data collected with the LHCb experiment. For the first time, the coefficients associated to short-distance physics effects, sensitive to processes beyond the standard model, are extracted directly from the data through a q2-unbinned amplitude analysis, where q2 is the μ+μ- invariant mass squared. Long-distance contributions, which originate from nonfactorizable QCD processes, are systematically investigated, and the most accurate assessment to date of their impact on the physical observables is obtained. The pattern of measured corrections to the short-distance couplings is found to be consistent with previous analyses of b- to s-quark transitions, with the largest discrepancy from the standard model predictions found to be at the level of 1.8 standard deviations. The global significance of the observed differences in the decay is 1.4 standard deviations.
  •  
38.
  • Aaij, R., et al. (author)
  • Amplitude analysis of the ?c+- pK-p+ decay and ?c+ baryon polarization measurement in semileptonic beauty hadron decays
  • 2023
  • In: Physical Review D. - : American Physical Society. - 2470-0010 .- 2470-0029. ; 108:1
  • Journal article (peer-reviewed)abstract
    • An amplitude analysis of A+c - pK- & pi;+ decays together with a measurement of the A+c polarization vector in semiOleptonic beauty hadron decays is presented. A sample of 400 000 candidates is selected from proton-proton collisions recorded by the LHCb detector at a center-of-mass energy of 13 TeV. An amplitude model is developed and the resonance fractions as well as two- and three-body decay parameters are reported. The mass and width of the Ao2000 thorn state are also determined. A significant A+c polarization is found. A large sensitivity of the A+c - pK-& pi;+ decay to the polarization is seen, making the amplitude model suitable for A+c polarization measurements in other systems.
  •  
39.
  • Aaij, R., et al. (author)
  • Amplitude analysis of the D+-> pi(-)pi(+)pi(+) decay and measurement of the pi(-)pi(+) S-wave amplitude
  • 2023
  • In: Journal of High Energy Physics (JHEP). - : Springer. - 1126-6708 .- 1029-8479.
  • Journal article (peer-reviewed)abstract
    • An amplitude analysis of the D+-> (-)pi(+)pi(+) decay is performed with a sample corresponding to 1.5 fb(-1) of integrated luminosity of pp collisions at a centre-of-mass energy root s = 8 TeV collected by the LHCb detector in 2012. The sample contains approximately six hundred thousand candidates with a signal purity of 95%. The resonant structure is studied through a fit to the Dalitz plot where the pi(-)pi(+) S-wave amplitude is extracted as a function of pi(-)pi(+) mass, and spin-1 and spin-2 resonances are included coherently through an isobar model. The S-wave component is found to be dominant, followed by the rho(770)(0)pi(+) and f(2)(1270)pi(+) components. A small contribution from the omega(782) -> pi(-)pi(+) decay is seen for the first time in the D+-> pi(-)pi(+)pi(+) decay.
  •  
40.
  • Aaij, R., et al. (author)
  • Amplitude analysis of the D+s → Ï€-Ï€+Ï€+ decay
  • 2023
  • In: Journal of High Energy Physics (JHEP). - : Springer Nature. - 1126-6708 .- 1029-8479. ; :7
  • Journal article (peer-reviewed)abstract
    • A Dalitz plot analysis of the D-s(+) -> pi(-)pi(+)pi(+) decay is presented. The analysis is based on proton-proton collision data recorded by the LHCb experiment at a centre-of-mass energy of 8TeV and corresponding to an integrated luminosity of 1.5 fb(-1). The resonant structure of the decay is obtained using a quasi-model-independent partial-wave analysis, in which the pi(+)pi(-) S-wave amplitude is parameterised as a generic complex function determined by a fit to the data. The S-wave component is found to be dominant, followed by the contribution from spin-2 resonances and a small contribution from spin-1 resonances. The latter includes the first observation of the D-s(+) -> omega(782)pi(+) channel in the D-s(+) -> pi(-)pi(+)pi(+) decay. The resonant structures of the D-s(+) -> pi(-)pi(+)pi(+) and D+ -> pi(-)pi(+)pi(+) decays are compared, providing information about the mechanisms for the hadron formation in these decays.
  •  
41.
  • Aaij, R., et al. (author)
  • Analysis of Neutral B-Meson Decays into Two Muons
  • 2022
  • In: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 128:4
  • Journal article (peer-reviewed)abstract
    • The branching fraction B(B-s(0)->mu(+)mu(-)) = (3.09(-0.43-0.11)(+0.46+0.15)) x 10(-9) and the effective lifetime to tau(B-s(0) -> mu(+)mu(-)) = 2.07 +/- 0.29 +/- 0.03 ps are measured, where the first uncertainty is statistical and the second systematic. No significant signal for B-0 ->mu(+)mu(-)gamma) and B-s(0)->mu(+)mu(-)gamma decays is found and upper limits B(B(B-0 ->mu(+)mu(-)) < 2.6 x 10(-10) and B(B-s(0) -> mu(+)mu(-)gamma) < 2.0 x 10(-9) at the 95% C.L. are determined, where the latter is limited to the range m(mu mu) > 4.9 GeV/c(2). The results are in agreement with the standard model expectations.Branching fraction and effective lifetime measurements of the rare decay B-s(0) -> mu(+)mu(-) and searches for the decays B-0 -> mu(+)mu(-) and B-s(0) -> mu(+)mu(-)gamma are reported using proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a luminosity of 9 fb(-1).
  •  
42.
  • Aaij, R., et al. (author)
  • Angular analysis of B0->D-Ds+ with Ds+-> Ds+gamma decays
  • 2021
  • In: Journal of High Energy Physics (JHEP). - : Springer Nature. - 1126-6708 .- 1029-8479. ; :6
  • Journal article (peer-reviewed)abstract
    • The first full angular analysis of the B0 -> D-Ds+ decay is performed using 6 fb(-1) of pp collision data collected with the LHCb experiment at a centre-of-mass energy of 13 TeV. The Ds+-> Ds+gamma and D*- -> D0- vector meson decays are used with the subsequent Ds+ -> K+K-pi (+) and D0 -> K+pi (-) decays. All helicity amplitudes and phases are measured, and the longitudinal polarisation fraction is determined to be f(L) = 0.578 +/- 0.010 +/- 0.011 with world-best precision, where the first uncertainty is statistical and the second is systematic. The pattern of helicity amplitude magnitudes is found to align with expectations from quark-helicity conservation in B decays. The ratio of branching fractions [B(B0 -> D-Ds+) x B(Ds+-> Ds+gamma)]/B(B-0 -> D(*-)Ds+) is measured to be 2.045 +/- 0.022 +/- 0.071 with world-best precision. In addition, the first observation of the Cabibbo-suppressed B-s -> D(*-)Ds+ decay is made with a significance of seven standard deviations. The branching fraction ratio B(B-s -> D(*-)Ds+)/B(B-0 -> D(*-)Ds+) is measured to be 0.049 +/- 0.006 +/- 0.003 +/- 0.002, where the third uncertainty is due to limited knowledge of the ratio of fragmentation fractions.
  •  
43.
  • Aaij, R., et al. (author)
  • Angular Analysis of D0 -> x plus x-mu plus mu- and D0 -> K plus K-mu plus mu- Decays and Search for CP Violation
  • 2022
  • In: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 128:22
  • Journal article (peer-reviewed)abstract
    • The first full angular analysis and an updated measurement of the decay-rate CP asymmetry of the D0 ??? x-+x-?????+????? and D0 ??? K+K?????+????? decays are reported. The analysis uses proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. The dataset corresponds to an integrated luminosity of 9 fb???1. The full set of CP -averaged angular observables and their CP asymmetries are measured as a function of the dimuon invariant mass. The results are consistent with expectations from the standard model and with CP symmetry.
  •  
44.
  • Aaij, R., et al. (author)
  • Angular Analysis of the B+→K*+μ+μ− Decay
  • 2021
  • In: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 126:16
  • Journal article (peer-reviewed)abstract
    • We present an angular analysis of the B+ -> K*(+)(-> K-S(0)pi(+))mu(+) mu(-) decay using 9 fb(-1) of pp collision data collected with the LHCb experiment. For the first time, the full set of CP-averaged angular observables is measured in intervals of the dimuon invariant mass squared. Local deviations from standard model predictions are observed, similar to those in previous LHCb analyses of the isospin-partner B-0 -> K*(0)mu(+)mu(-) decay. The global tension is dependent on which effective couplings are considered and on the choice of theory nuisance parameters.
  •  
45.
  • Aaij, R., et al. (author)
  • Angular analysis of the rare decay B0s → ϕμ+μ−
  • 2021
  • In: Journal of High Energy Physics (JHEP). - : Springer Nature. - 1126-6708 .- 1029-8479. ; :11
  • Journal article (peer-reviewed)abstract
    • An angular analysis of the rare decay B-s(0) -> phi mu(+)mu(-) is presented, using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13TeV, corresponding to an integrated luminosity of 8.4 fb(-1). The observables describing the angular distributions of the decay B-s(0) -> phi mu(+)mu(-) are determined in regions of q(2), the square of the dimuon invariant mass. The results are consistent with Standard Model predictions.
  •  
46.
  • Aaij, R., et al. (author)
  • Associated production of prompt J/Ψ and Υ mesons in pp collisions at √ˆšs=13 TeV
  • 2023
  • In: Journal of High Energy Physics (JHEP). - : Springer. - 1126-6708 .- 1029-8479.
  • Journal article (peer-reviewed)abstract
    • The associated production of prompt J/psi and (sic) mesons in pp collisions at a centre-of-mass energy of root s = 13TeV is studied using LHCb data, corresponding to an integrated luminosity of 4 fb(-1). The measurement is performed for J/psi (sic) mesons with a transverse momentum pT < 10 (30) GeV/ c in the rapidity range 2.0 < y < 4.5. In this kinematic range, the cross-section of the associated production of prompt J/psi and (sic)(1S) mesons is measured to be 133 +/- 22 +/- 7 +/- 3 pb, with a significance of 7.9 s, and that of prompt J/psi and (sic)(2S) mesons to be 76 +/- 21 +/- 4 +/- 7 pb, with a significance of 4.9 sigma. The first uncertainty is statistical, the second systematic, and the third due to uncertainties on the used branching fractions. This is the first observation of the associated production of J/psi and (sic)(1S) in proton-proton collisions. Differential cross-sections are measured as functions of variables that are sensitive to kinematic correlations between the J/psi and (sic)(1S) mesons. The effective cross-sections of the associated production of prompt J/psi and (sic) mesons are obtained and found to be compatible with measurements using other particle productions.
  •  
47.
  • Aaij, R., et al. (author)
  • Branching Fraction Measurements of the Rare B0s→ϕμ+μ− and B0s→f′2(1525)μ+μ− Decays
  • 2021
  • In: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 127:15
  • Journal article (peer-reviewed)abstract
    • The branching fraction of the rare B-s(0) -> phi mu(+)mu(-) decay is measured using data collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to integrated luminosities of 1, 2, and 6 fb(-1), respectively. The branching fraction is reported in intervals of q(2), the square of the dimuon invariant mass. In the q(2) region between 1.1 and 6.0 GeV2/c(4) , the measurement is found to lie 3.6 standard deviations below a standard model prediction based on a combination of light cone sum rule and lattice QCD calculations. In addition, the first observation of the rare B-s(0)-> f(2)' (1525)mu(+)mu(-) decay is reported with a statistical significance of 9 standard deviations and its branching fraction is determined.
  •  
48.
  • Aaij, R., et al. (author)
  • Centrality determination in heavy-ion collisions with the LHCb detector
  • 2022
  • In: Journal of Instrumentation. - : Institute of Physics Publishing (IOPP). - 1748-0221. ; 17:5
  • Journal article (peer-reviewed)abstract
    • The centrality of heavy-ion collisions is directly related to the created medium in these interactions. A procedure to determine the centrality of collisions with the LHCb detector is implemented for lead-lead collisions root s(NN) = 5 TeV and lead-neon fixed-target collisions at root s(NN) = 69 GeV. The energy deposits in the electromagnetic calorimeter are used to determine and define the centrality classes. The correspondence between the number of participants and the centrality for the lead-lead collisions is in good agreement with the correspondence found in other experiments, and the centrality measurements for the lead-neon collisions presented here are performed for the first time in fixed-target collisions at the LHC.
  •  
49.
  • Aaij, R., et al. (author)
  • Charmonium production in pNe collisions at √sNN = 68.5 GeV
  • 2023
  • In: European Physical Journal C. - : Springer Nature. - 1434-6044 .- 1434-6052. ; 83:7
  • Journal article (peer-reviewed)abstract
    • The measurement of charmonium states produced in proton-neon ( pNe) collisions by the LHCb experiment in its fixed-target configuration is presented. The production of J/ψ and ψ(2S) mesons is studied with a beam of 2.5 TeV protons colliding on gaseous neon targets at rest, corresponding to a nucleon-nucleon centre-of-mass energy √sNN = 68.5 GeV. The data sample corresponds to an integrated luminosity of 21.7 ± 1.4 nb−1 . The J/ψ and ψ(2S) hadrons are reconstructed in μ+μ− final states. The J/ψ production cross-section per target nucleon in the centre-of-mass rapidity range y ∈ [−2.29, 0] is found to be 506 ± 8 ± 46 nb/nucleon. The ratio of J/ψ and D0 cross-sections is evaluated to (1.06 ± 0.02 ± 0.09)%. The ψ(2S) to J/ψ relative production rate is found to be (1.67 ± 0.27 ± 0.10)% in good agreement with other measurements involving beam and target nuclei of similar sizes.
  •  
50.
  • Aaij, R., et al. (author)
  • Constraints on the CKM angle gamma from B-+/- -> Dh(+/-) decays using D -> h(+/-)h '(-/+)pi(0) final states
  • 2022
  • In: Journal of High Energy Physics (JHEP). - : Springer Nature. - 1126-6708 .- 1029-8479. ; :7
  • Journal article (peer-reviewed)abstract
    • A data sample collected with the LHCb detector corresponding to an integrated luminosity of 9 fb(-1) is used to measure eleven CP violation observables in B-+/- -> Dh(+/-) decays, where h is either a kaon or a pion. The neutral D meson decay is reconstructed in the three-body final states: K-+/-pi(-/+)pi(0); pi(+)pi(-)pi(0); K+ K- pi(0) and the suppressed pi K-+(-/+)pi(0) combination. The mode where a large CP asymmetry is expected, B-+/- -> [K-+/-pi(-/+)pi(0)] K-D(+/-), is observed with a significance greater than seven standard deviations. The ratio of the partial width of this mode relative to that of the favoured mode, B-+/- -> [K-+/-pi(-/+)pi(0)] K-D(+/-), is R-ADS(K) = (1.27 +/- 0.16 +/- 0.02) x 10(-2). Evidence for a large CP asymmetry is also seen: A(ADS(K)) = - 0.38 +/- 0.12 +/- 0.02. Constraints on the CKM angle gamma are calculated from the eleven reported observables.
  •  
Skapa referenser, mejla, bekava och länka
  • Result 1-50 of 534
Type of publication
journal article (392)
conference paper (35)
doctoral thesis (22)
other publication (20)
reports (19)
editorial collection (15)
show more...
book chapter (12)
licentiate thesis (9)
research review (5)
book (4)
patent (1)
show less...
Type of content
peer-reviewed (412)
other academic/artistic (99)
pop. science, debate, etc. (23)
Author/Editor
Eklund, Lars (167)
Aaij, R. (129)
Zunica, G. (127)
Eklund, Per (94)
Hultman, Lars (90)
Kupsc, Andrzej (63)
show more...
Adlarson, Patrik (48)
Lu, Jun (48)
Eklund, Mona (31)
Jansson, Ulf (27)
Hansson, Lars (27)
Eklund, Anders (26)
Högberg, Hans (22)
Eklund, Klas-Håkan (21)
Malm, Jan (20)
Vestling, Lars (20)
Olsson, Jörgen (17)
Eklund, Martin (17)
Koskinen, Lars-Owe D (17)
Rosén, Johanna (16)
Eklund, Jörgen (15)
Jensen, Jens (15)
Tengstrand, Olof (15)
Ankarcrona, Johan (14)
Gren-Eklund, Gunilla (14)
Eklund, Anders, 1965 ... (14)
Hultman, Lars, Profe ... (13)
Lind, Lars (12)
Bejerholm, Ulrika (12)
Eklund, Per, Dr, (12)
Nedfors, Nils (12)
Eklund, Per, 1977- (12)
Emmerlich, Jens (11)
Persson, Per O A (11)
Hultman, Lars, Profe ... (11)
Utas, Bo (11)
Li, Youbing (11)
Li, Mian (11)
Du, Shiyu (11)
Chai, Zhifang (11)
Huang, Qing (11)
Högberg, Hans, 1968- (11)
Carlsson, Lars (10)
Wilhelmsson, Ola (10)
Malm, Jan, Professor ... (10)
Chen, Ke (10)
Lauridsen, Jonas (10)
Hultman, Lars, 1960- (9)
Wåhlin, Anders (9)
Frodelius, Jenny (9)
show less...
University
Uppsala University (264)
Linköping University (138)
Lund University (63)
Umeå University (57)
Karolinska Institutet (36)
Royal Institute of Technology (30)
show more...
University of Gothenburg (20)
Chalmers University of Technology (12)
Örebro University (9)
RISE (8)
Högskolan Dalarna (8)
Stockholm University (7)
Swedish University of Agricultural Sciences (7)
University of Gävle (6)
Malmö University (6)
Linnaeus University (6)
Jönköping University (4)
Mid Sweden University (4)
University of Borås (4)
Stockholm School of Economics (3)
Swedish Environmental Protection Agency (3)
Karlstad University (3)
Blekinge Institute of Technology (3)
Kristianstad University College (2)
Luleå University of Technology (2)
Swedish National Defence College (2)
Halmstad University (1)
Mälardalen University (1)
University of Skövde (1)
The Royal Institute of Art (1)
show less...
Language
English (486)
Swedish (46)
Undefined language (2)
Research subject (UKÄ/SCB)
Natural sciences (245)
Medical and Health Sciences (117)
Engineering and Technology (52)
Social Sciences (24)
Humanities (17)

Year

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view