Zobrazeno 1 - 10
of 292
pro vyhledávání: '"Ulf Lindström"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-47 (2024)
Abstract Covariant conserved 2-form currents for linearised gravity are constructed by contracting the linearised curvature with conformal Killing-Yano tensors. The corresponding conserved charges were originally introduced by Penrose and have recent
Externí odkaz:
https://doaj.org/article/e1a4de0365254af0a4a90e7e0764522d
Autor:
Ulf Lindström, Özgür Sarıoğlu
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 5, Pp 1-15 (2023)
Abstract In this paper we discuss the construction of conserved tensors (currents) involving conformal Killing-Yano tensors (CKYTs), generalising the corresponding constructions for Killing-Yano tensors (KYTs). As a useful preparation for this, but a
Externí odkaz:
https://doaj.org/article/e2701591bd644acfa7518e4b029f2801
Autor:
Anne Kirstine Frie, Ulf Lindström
Publikováno v:
PLoS ONE, Vol 19, Iss 7, p e0301427 (2024)
This study investigates effects of subtle methodological choices on the estimation and biological interpretation of age, growth and reproductive parameters for harbour porpoises. The core analyses are based on a focal Norwegian data set built on samp
Externí odkaz:
https://doaj.org/article/7aef065cfeee450fa904a6ba32d2f468
Autor:
Ronald F van Vollenhoven, Bente Glintborg, Merete Lund Hetland, Ulf Lindström, Brigitte Michelsen, Elsa Vieira-Sousa, Florenzo Iannone, Eirik Klami Kristianslund, Dan Nordström, Karel Pavelka, Ziga Rotar, Maria Jose Santos, Catalin Codreanu, Gary J Macfarlane, Mikkel Østergaard, Michael T Nurmohamed, Jiri Vencovsky, Rosario Foti, Bjorn Gudbjornsson, Matija Tomšič, Lykke Midtbøll Ørnbjerg, Adrian Ciurea, Árni Jón Geirsson, Irene van der Horst-Bruinsma, Michael S Nissen, Ovidiu Rotariu, Isabel Castrejón, Johan K Wallman, Marleen van de Sande, Anne G Loft, Pasoon Hellamand, Thomas Klausch, Anna Mari Hokkanen, Corina Mogosan, Lucia Otero-Varela, Semih Gulle, Berrin Zengin
Publikováno v:
RMD Open, Vol 9, Iss 4 (2023)
Objective Evidence indicates reduced treatment effectiveness of TNFi in women with axial spondyloarthritis (axSpA) compared with men. We aimed to investigate sex differences in treatment response and retention rates over 24 months of follow-up in axS
Externí odkaz:
https://doaj.org/article/e6632f400b4e4c9eb966b1dc4cf15287
Autor:
Ulf Lindström
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 10, Pp 1-19 (2022)
Abstract It is shown how extended supersymmetry realised directly on the (2, 2) semichiral superfields of a symplectic sigma model gives rise to a geometry on the doubled tangent bundle consisting of two Yano F structures on an almost para-hermitian
Externí odkaz:
https://doaj.org/article/91f890fa8a0e44418bf717c13b71fcbc
Publikováno v:
RMD Open, Vol 9, Iss 3 (2023)
Objectives To identify perinatal and early-life risk factors for ankylosing spondylitis (AS), controlling for family-shared confounding with a sibling comparison design.Methods In this nationwide, register-based case–control study, we identified 56
Externí odkaz:
https://doaj.org/article/0f808d76e5bb4be3b769089038e168cd
Autor:
Ulf Lindström, Tor Olofsson, Lennart Jacobsson, Daniela Di Giuseppe, Eva Klingberg, Sofia Exarchou, Gerd-Marie Alenius, Johan K Wallman
Publikováno v:
RMD Open, Vol 9, Iss 2 (2023)
Introduction We aimed to compare the proportions of patients with newly diagnosed psoriatic arthritis (PsA) and rheumatoid arthritis (RA) remaining on methotrexate (regardless of other disease-modifying antirheumatic drug (DMARD)-changes), and propor
Externí odkaz:
https://doaj.org/article/9d96ff4933a14b08841dde072eea6762
Publikováno v:
Physics Letters B, Vol 839, Iss , Pp 137784- (2023)
We construct an asymptotic conserved charge for a current that has been defined using Killing-Yano tensors. We then calculate the corresponding conserved charges of the Kerr and AdS-Kerr black holes, and their higher-dimensional generalizations, Myer
Externí odkaz:
https://doaj.org/article/8fd3c53a546542bfaafd8ba9ec2c1194
Autor:
Emanuele Bobbio, Clara Hjalmarsson, Marie Björkenstam, Christian L. Polte, Anders Oldfors, Ulf Lindström, Pia Dahlberg, Sven-Erik Bartfay, Piotr Szamlewski, Amar Taha, Egidija Sakiniene, Kristjan Karason, Niklas Bergh, Entela Bollano
Publikováno v:
BMC Cardiovascular Disorders, Vol 22, Iss 1, Pp 1-9 (2022)
Abstract Background Cardiac sarcoidosis (CS) and giant cell myocarditis (GCM) are rare diseases that share some similarities, but also display different clinical and histopathological features. We aimed to compare the demographics, clinical presentat
Externí odkaz:
https://doaj.org/article/c09d9aff64af4135a653ea742c210640
Autor:
Ulf Lindström, Özgür Sarıoğlu
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 3, Pp 1-20 (2022)
Abstract We discuss conserved currents constructed from the Cotton tensor and (conformal) Killing-Yano tensors (KYTs). We consider the corresponding charges generally and then exemplify with the four-dimensional Plebański-Demiański metric where the
Externí odkaz:
https://doaj.org/article/2ca9d8fbb14a40b2b8966021ad879333