| 1. |
- Abelev, Betty, et al.
(författare)
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Long-range angular correlations on the near and away side in p-Pb collisions at root S-NN=5.02 TeV
- 2013
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Ingår i: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics. - : Elsevier BV. - 0370-2693. ; 719:1-3, s. 29-41
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Tidskriftsartikel (refereegranskat)abstract
- Angular correlations between charged trigger and associated particles are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV for transverse momentum ranges within 0.5 < P-T,P-assoc < P-T,P-trig < 4 GeV/c. The correlations are measured over two units of pseudorapidity and full azimuthal angle in different intervals of event multiplicity, and expressed as associated yield per trigger particle. Two long-range ridge-like structures, one on the near side and one on the away side, are observed when the per-trigger yield obtained in low-multiplicity events is subtracted from the one in high-multiplicity events. The excess on the near-side is qualitatively similar to that recently reported by the CMS Collaboration, while the excess on the away-side is reported for the first time. The two-ridge structure projected onto azimuthal angle is quantified with the second and third Fourier coefficients as well as by near-side and away-side yields and widths. The yields on the near side and on the away side are equal within the uncertainties for all studied event multiplicity and p(T) bins, and the widths show no significant evolution with event multiplicity or p(T). These findings suggest that the near-side ridge is accompanied by an essentially identical away-side ridge. (c) 2013 CERN. Published by Elsevier B.V. All rights reserved.
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| 2. |
- Abelev, Betty, et al.
(författare)
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Measurement of prompt J/psi and beauty hadron production cross sections at mid-rapidity in pp collisions at root s=7 TeV
- 2012
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Ingår i: Journal of High Energy Physics. - 1029-8479. ; :11
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Tidskriftsartikel (refereegranskat)abstract
- The ALICE experiment at the LHC has studied J/psi production at mid-rapidity in pp collisions at root s = 7 TeV through its electron pair decay on a data sample corresponding to an integrated luminosity L-int = 5.6 nb(-1). The fraction of J/psi from the decay of long-lived beauty hadrons was determined for J/psi candidates with transverse momentum p(t) > 1,3 GeV/c and rapidity vertical bar y vertical bar < 0.9. The cross section for prompt J/psi mesons, i.e. directly produced J/psi and prompt decays of heavier charmonium states such as the psi(2S) and chi(c) resonances, is sigma(prompt J/psi) (p(t) > 1.3 GeV/c, vertical bar y vertical bar < 0.9) = 8.3 +/- 0.8(stat.) +/- 1.1 (syst.)(-1.4)(+1.5) (syst. pol.) mu b. The cross section for the production of b-hadrons decaying to J/psi with p(t) > 1.3 GeV/c and vertical bar y vertical bar < 0.9 is a sigma(J/psi <- hB) (p(t) > 1.3 GeV/c, vertical bar y vertical bar < 0.9) = 1.46 +/- 0.38 (stat.)(-0.32)(+0.26) (syst.) mu b. The results are compared to QCD model predictions. The shape of the p(t) and y distributions of b-quarks predicted by perturbative QCD model calculations are used to extrapolate the measured cross section to derive the b (b) over bar pair total cross section and d sigma/dy at mid-rapidity.
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| 3. |
- Abelev, Betty, et al.
(författare)
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Underlying Event measurements in pp collisions at root s=0.9 and 7 TeV with the ALICE experiment at the LHC
- 2012
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Ingår i: Journal of High Energy Physics. - 1029-8479. ; :7
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Tidskriftsartikel (refereegranskat)abstract
- We present measurements of Underlying Event observables in pp collisions at root s = 0 : 9 and 7 TeV. The analysis is performed as a function of the highest charged-particle transverse momentum p(T),L-T in the event. Different regions are defined with respect to the azimuthal direction of the leading (highest transverse momentum) track: Toward, Transverse and Away. The Toward and Away regions collect the fragmentation products of the hardest partonic interaction. The Transverse region is expected to be most sensitive to the Underlying Event activity. The study is performed with charged particles above three different p(T) thresholds: 0.15, 0.5 and 1.0 GeV/c. In the Transverse region we observe an increase in the multiplicity of a factor 2-3 between the lower and higher collision energies, depending on the track p(T) threshold considered. Data are compared to PYTHIA 6.4, PYTHIA 8.1 and PHOJET. On average, all models considered underestimate the multiplicity and summed p(T) in the Transverse region by about 10-30%.
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| 4. |
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| 5. |
- Munch, Henrik K, et al.
(författare)
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Construction of Insulin 18-mer Nanoassemblies Driven by Coordination to Iron(II) and Zinc(II) Ions at Distinct Sites.
- 2016
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Ingår i: Angewandte Chemie (International edition). - : Wiley. - 1521-3773. ; 55:7, s. 2378-2381
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Tidskriftsartikel (refereegranskat)abstract
- Controlled self-assembly (SA) of proteins offers the possibility to tune their properties or to create new materials. Herein, we present the synthesis of a modified human insulin (HI) with two distinct metal-ion binding sites, one native, the other abiotic, enabling hierarchical SA through coordination with two different metal ions. Selective attachment of an abiotic 2,2'-bipyridine (bipy) ligand to HI, yielding HI-bipy, enabled Zn(II) -binding hexamers to SA into trimers of hexamers, [[HI-bipy]6 ]3 , driven by octahedral coordination to a Fe(II) ion. The structures were studied in solution by small-angle X-ray scattering and on surfaces with AFM. The abiotic metal ligand had a higher affinity for Fe(II) than Zn(II) ions, enabling control of the hexamer formation with Zn(II) and the formation of trimers of hexamers with Fe(II) ions. This precise control of protein SA to give oligomers of oligomers provides nanoscale structures with potential applications in nanomedicine.
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| 6. |
- Nygaard Folkmann, Mads
(författare)
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Visionens mørkerøde frugt : Det imaginære i Stagnelius’ lyrik
- 2006
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Ingår i: Samlaren. - Uppsala : Svenska Litteratursällskapet. - 0348-6133 .- 2002-3871. ; 127, s. 156-177
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Tidskriftsartikel (refereegranskat)abstract
- Mads Nygaard Folkmann, Visionens mørkerøde frugt. Det imaginære i Stagnelius’ lyrik. (The Dark Red Fruit of Vision. The Imaginary in the Lyrical Poetry of Stagnelius.) The aim of the article is to read the lyrical poetry of the Swedish Romantic author Erik Johan Stagnelius (1793–1823) in light of the concept of imagination dominant within European Romanticism. While more readily debated in England and Germany at the time, the concept appears in Sweden as well, namely, in the aesthetic journal Phosphoros. While Stagnelius doesn’t participate in the discussions of his time, his work (especially the lyrical poetry) displays an imaginary or phantasmagoric world of its own. To understand the ways and functions of this imaginary, the article argues that it is necessary to examine Stagnelius’ work as an expression of a poetic imagination, that is, how the imaginary world is created as and through poetic devices. The article states three related concepts in order to analyze the poetic imagination in Stagnelius’s work, namely, internalization, unrealization, and transfiguration. The processes of internalization and unrealization should be understood as altering a relation to meaning through being formulated according to the premises of the speaking subject and placed in a productive distance to reality. The thesis proposes that Stagnelius, through the processes of internalization and unrealization, seeks a transfiguration of the given. In the texts of Stagnelius, this is often expressed through the discourse of religious salvation. Crucial, however, to the article’s understanding of the poetic imagination, is that transfiguration paradoxically becomes ‘real’ by remaining inside the space of the lyrical text. Paradigmatic for this structure of literary inversion is the famous poem “Endymion” (after 1821), in which the dreams of transcendence are ‘only a dream’, but where transcendence at the same time has a reality of its own within the immanent space of dream. In analyzing a series of poems, the article seeks to broaden the understanding of the concepts internalization, unrealization, and transfiguration. For example, in a reading of “Afsked till Lifvet” (“Parting from Life”, after 1818) it is shown how internalization doesn’t function as a principle of absolute self-knowledge but as the subject’s meeting with its own fractures and boundaries. Further, unrealization is discussed in the figure of ‘Amanda’, which plays a dominant role in a series of poems. Whereas in older scholarship ‘Amanda’ forms the basis for various kinds of biographical speculation, which in itself is problematic as very little is known about Stagnelius’ life, the article reads Amanda as a point of textual construction where meaning takes the form of an unrealizing textual presence based on a process of negation (in sympathy with the Sartrean notion of the imaginary’s capacity of pure negation). Finally, the principle of transfiguration is discussed in light of one of Stagnelius’ few theoretical prose fragments and through a reading of the enigmatic untitled and unfinished poem “Se blomman! På smaragdegrunden” (“See the Flower! On the Emerald Ground”, 1821–23). In conclusion, the article claims an inversion of transfiguration within the limits of poetic language whereby Stagnelius finds his specificity as a Romantic author: the lyrical text at one and the same time points to an explanatory ground (“förklaringsgrund”) beyond itself, thus suggesting a dimension of transfiguration, and states this kind of ’pointing beyond’ as solely a matter of the density of poetic language. Thus the title of the article: the vision can be retained within the figure of a mysterious dark red fruit, which points to a new way of understanding that is not yet part of given, known reality.
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| 7. |
- Rosén, Anders, Dr, et al.
(författare)
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Mapping the CDIO Syllabus to the UNESO Key Competences for Sustainability
- 2019
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Ingår i: Proceedings of the International CDIO Conference. - 2002-1593. ; , s. 67-84
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Konferensbidrag (refereegranskat)abstract
- In this paper a framework of key competencies for sustainability defined by UNESCO is used to evaluate the relevance of the CDIO Syllabus for promoting engineering education for sustainable development. The evaluation is performed in two steps. First, topics, terms and concepts in the CDIO Syllabus that corresponds to the different UNESCO key competencies are identified. The second step is a qualitative discussion where areas of strong mapping are highlighted and aspects that could be better visualized or strengthened in, or added to, the Syllabus are identified. Differences in definitions of various concepts between the CDIO Syllabus and the UNESCO key competencies and the overall relation between the two frameworks are discussed. It is concluded that the CDIO Syllabus is rather well aligned with the UNESCO framework, however several opportunities (not to say needs) for strengthening the Syllabus in relation to the key competencies are identified. The UNESCO key competencies are found to be useful instruments for scrutinizing and updating the CDIO Syllabus. Other opportunities for knowledge and methods transfer between the Education for Sustainable Development (ESD) domain and the Engineering Education domain are identified. The paper is proposed to be used as basis for updating the CDIO Syllabus into a version 3.0 for maintaining its relevance in a changing world.
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| 8. |
- Vendelbo Lind, Mads, 1988, et al.
(författare)
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Reply to RB Yarandi
- 2019
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Ingår i: The American journal of clinical nutrition. - : Elsevier BV. - 0002-9165 .- 1938-3207. ; 109:4, s. 1233-1234
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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