| 1. |
- Bombarda, F., et al.
(författare)
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Runaway electron beam control
- 2019
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Ingår i: Plasma Physics and Controlled Fusion. - : IOP Publishing. - 1361-6587 .- 0741-3335. ; 61:1
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Tidskriftsartikel (refereegranskat)
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| 2. |
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- 2018
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Ingår i: Nuclear Fusion. - : IOP Publishing. - 1741-4326 .- 0029-5515. ; 58:1
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Forskningsöversikt (refereegranskat)
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| 3. |
- Labit, B., et al.
(författare)
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Dependence on plasma shape and plasma fueling for small edge-localized mode regimes in TCV and ASDEX Upgrade
- 2019
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Ingår i: Nuclear Fusion. - : IOP Publishing. - 1741-4326 .- 0029-5515. ; 59:8
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Tidskriftsartikel (refereegranskat)abstract
- © 2019 Institute of Physics Publishing. All rights reserved. Within the EUROfusion MST1 work package, a series of experiments has been conducted on AUG and TCV devices to disentangle the role of plasma fueling and plasma shape for the onset of small ELM regimes. On both devices, small ELM regimes with high confinement are achieved if and only if two conditions are fulfilled at the same time. Firstly, the plasma density at the separatrix must be large enough (ne,sep/nG ∼ 0.3), leading to a pressure profile flattening at the separatrix, which stabilizes type-I ELMs. Secondly, the magnetic configuration has to be close to a double null (DN), leading to a reduction of the magnetic shear in the extreme vicinity of the separatrix. As a consequence, its stabilizing effect on ballooning modes is weakened.
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| 4. |
- Meyer, H., et al.
(författare)
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Overview of progress in European medium sized tokamaks towards an integrated plasma-edge/wall solution
- 2017
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Ingår i: Nuclear Fusion. - : Institute of Physics Publishing (IOPP). - 0029-5515 .- 1741-4326. ; 57:10
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Tidskriftsartikel (refereegranskat)abstract
- Integrating the plasma core performance with an edge and scrape-off layer (SOL) that leads to tolerable heat and particle loads on the wall is a major challenge. The new European medium size tokamak task force (EU-MST) coordinates research on ASDEX Upgrade (AUG), MAST and TCV. This multi-machine approach within EU-MST, covering a wide parameter range, is instrumental to progress in the field, as ITER and DEMO core/pedestal and SOL parameters are not achievable simultaneously in present day devices. A two prong approach is adopted. On the one hand, scenarios with tolerable transient heat and particle loads, including active edge localised mode (ELM) control are developed. On the other hand, divertor solutions including advanced magnetic configurations are studied. Considerable progress has been made on both approaches, in particular in the fields of: ELM control with resonant magnetic perturbations (RMP), small ELM regimes, detachment onset and control, as well as filamentary scrape-off-layer transport. For example full ELM suppression has now been achieved on AUG at low collisionality with n = 2 RMP maintaining good confinement H-H(98,H-y2) approximate to 0.95. Advances have been made with respect to detachment onset and control. Studies in advanced divertor configurations (Snowflake, Super-X and X-point target divertor) shed new light on SOL physics. Cross field filamentary transport has been characterised in a wide parameter regime on AUG, MAST and TCV progressing the theoretical and experimental understanding crucial for predicting first wall loads in ITER and DEMO. Conditions in the SOL also play a crucial role for ELM stability and access to small ELM regimes.
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| 5. |
- Meyer, H., et al.
(författare)
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Overview of progress in European medium sized tokamaks towards an integrated plasma-edge/wall solution
- 2017
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Ingår i: Nuclear Fusion. - : Institute of Physics Publishing (IOPP). - 0029-5515 .- 1741-4326. ; 57:10
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Tidskriftsartikel (refereegranskat)abstract
- Integrating the plasma core performance with an edge and scrape-off layer (SOL) that leads to tolerable heat and particle loads on the wall is a major challenge. The new European medium size tokamak task force (EU-MST) coordinates research on ASDEX Upgrade (AUG), MAST and TCV. This multi-machine approach within EU-MST, covering a wide parameter range, is instrumental to progress in the field, as ITER and DEMO core/pedestal and SOL parameters are not achievable simultaneously in present day devices. A two prong approach is adopted. On the one hand, scenarios with tolerable transient heat and particle loads, including active edge localised mode (ELM) control are developed. On the other hand, divertor solutions including advanced magnetic configurations are studied. Considerable progress has been made on both approaches, in particular in the fields of: ELM control with resonant magnetic perturbations (RMP), small ELM regimes, detachment onset and control, as well as filamentary scrape-off-layer transport. For example full ELM suppression has now been achieved on AUG at low collisionality with n = 2 RMP maintaining good confinement H-H(98,H-y2) approximate to 0.95. Advances have been made with respect to detachment onset and control. Studies in advanced divertor configurations (Snowflake, Super-X and X-point target divertor) shed new light on SOL physics. Cross field filamentary transport has been characterised in a wide parameter regime on AUG, MAST and TCV progressing the theoretical and experimental understanding crucial for predicting first wall loads in ITER and DEMO. Conditions in the SOL also play a crucial role for ELM stability and access to small ELM regimes.
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| 6. |
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| 7. |
- Beutier, G., et al.
(författare)
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Band Filling Control of the Dzyaloshinskii-Moriya Interaction in Weakly Ferromagnetic Insulators
- 2017
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Ingår i: Physical Review Letters. - : AMER PHYSICAL SOC. - 0031-9007 .- 1079-7114. ; 119:16
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Tidskriftsartikel (refereegranskat)abstract
- We observe and explain theoretically a dramatic evolution of the Dzyaloshinskii-Moriya interaction (DMI) in the series of isostructural weak ferromagnets, MnCO3, FeBO3, CoCO3, and NiCO3. The sign of the interaction is encoded in the phase of the x-ray magnetic diffraction amplitude, observed through interference with resonant quadrupole scattering. We find very good quantitative agreement with first-principles electronic structure calculations, reproducing both sign and magnitude through the series, and propose a simplified "toy model" to explain the change in sign with 3d shell filling. The model gives insight into the evolution of the DMI in Mott and charge transfer insulators.
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| 8. |
- Pincini, D., et al.
(författare)
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Role of the orbital moment in a series of isostructural weak ferromagnets
- 2018
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Ingår i: Physical Review B. - : AMER PHYSICAL SOC. - 2469-9950 .- 2469-9969. ; 98:10
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Tidskriftsartikel (refereegranskat)abstract
- The orbital contribution to the magnetic moment of the transition-metal ion in the isostructural weak ferromagnets ACO(3) (A = Mn,Co,Ni) and FeBO3 was investigated by a combination of first-principles calculations, nonresonant x-ray magnetic scattering, and x-ray magnetic circular dichroism. A nontrivial evolution of the orbital moment as a function of the 3d orbitals filling is revealed, with a particularly large value found in the Co member of the family. Here, the coupling between magnetic and lattice degrees of freedom produced by the spin-orbit interaction results in a large single-ion anisotropy and a peculiar magnetic-moment-induced electron cloud distortion, evidenced by the appearance of a subtle scattering amplitude at space-group-forbidden reflections and significant magnetostrictive effects. Our results, which complement a previous investigation on the sign of the Dzyaloshinskii-Moriya interaction across the series, highlight the importance of spin-orbit coupling in the physics of weak ferromagnets and prove the ability of modern first-principles calculations to predict the properties of materials where the Dzyaloshinskii-Moriya interaction is a fundamental ingredient of the magnetic Hamiltonian.
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| 9. |
- Moorkens, E, et al.
(författare)
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The Expiry of Humira® Market Exclusivity and the Entry of Adalimumab Biosimilars in Europe: An Overview of Pricing and National Policy Measures
- 2021
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Ingår i: Frontiers in pharmacology. - : Frontiers Media SA. - 1663-9812. ; 11, s. 591134-
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Tidskriftsartikel (refereegranskat)abstract
- Background: From October 2018, adalimumab biosimilars could enter the European market. However, in some countries, such as Netherlands, high discounts reported for the originator product may have influenced biosimilar entry.Objectives: The aim of this paper is to provide a European overview of (list) prices of originator adalimumab, before and after loss of exclusivity; to report changes in the reimbursement status of adalimumab products; and discuss relevant policy measures.Methods: Experts in European countries received a survey consisting of three parts: 1) general financing/co-payment of medicines, 2) reimbursement status and prices of originator adalimumab, and availability of biosimilars, and 3) policy measures related to the use of adalimumab.Results: In May 2019, adalimumab biosimilars were available in 24 of the 30 countries surveyed. Following introduction of adalimumab biosimilars, a number of countries have made changes in relation to the reimbursement status of adalimumab products. Originator adalimumab list prices varied between countries by a factor of 2.8 before and 4.1 after loss of exclusivity. Overall, list prices of originator adalimumab decreased after loss of exclusivity, although for 13 countries list prices were unchanged. When reported, discounts/rebates on originator adalimumab after loss of exclusivity ranged from 0% to approximately 26% (Romania), 60% (Poland), 80% (Denmark, Italy, Norway), and 80–90% (Netherlands), leading to actual prices per pen or syringe between €412 (Finland) and €50 – €99 (Netherlands). To leverage competition following entry of biosimilar adalimumab, only a few countries adopted measures specifically for adalimumab in addition to general policies regarding biosimilars. In some countries, a strategy was implemented even before loss of exclusivity (Denmark, Scotland), while others did not report specific measures.Conclusion: Even though originator adalimumab is the highest selling product in the world, few countries have implemented specific policies and practices for (biosimilar) adalimumab. Countries with biosimilars on the market seem to have competition lowering list or actual prices. Reported discounts varied widely between countries.
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| 10. |
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| 11. |
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| 12. |
- Pham, M. K., et al.
(författare)
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A new Certified Reference Material for radionuclides in Irish sea sediment (IAEA-385)
- 2008
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Ingår i: APPLIED RADIATION AND ISOTOPES. - : Elsevier BV. - 1872-9800 .- 0969-8043. ; 66:11, s. 1711-1717
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Konferensbidrag (refereegranskat)abstract
- A new Certified Reference Material (CRM) for radionuclides in sediment (IAEA-385) is described and the results of the certification process are presented. Eleven radionuclides (K-40, Cs-137, Ra-226, Ra-228, Th-230, Th-232, U-234, U-238, Pu-238, Pu239+240 and Am-241) have been certified and information mass activities with 95% confidence intervals are given for seven other radionuclides (Sr-90, Pb-210(Po-210), U-235, Pu-239, Pu-240 and Pu-241). Results for less frequently reported radionuclides (Co-60, Tc-99, Cs-134, Eu-155, Ra-224 and Np-239) and information on some activity and mass ratios are also reported. The CRM can be used for quality assurance/quality control of the analysis of radionuclides in sediment samples, for the development and validation of analytical methods and for training purposes. (C) 2008 IAEA. Published by Elsevier Ltd. All rights reserved.
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| 13. |
- Weinzettl, V., et al.
(författare)
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Dust remobilization experiments on the COMPASS tokamak
- 2017
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Ingår i: Fusion engineering and design. - : ELSEVIER SCIENCE SA. - 0920-3796 .- 1873-7196. ; 124, s. 446-449
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Tidskriftsartikel (refereegranskat)abstract
- Dust remobilization is one of the not yet fully understood mechanisms connected to the prompt erosion of material from plasma facing surfaces in fusion devices. As a part of a newly initiated cross-machine study, dust remobilization experiments have been performed on the COMPASS tokamak. Tungsten samples with well-defined deposited tungsten dust grains, prepared using a recently developed controlled pre-adhesion method, have been exposed to ELMy H-mode discharges as well as L-mode discharges with forced disruptions. Here we report on the technical aspects of the experiment realization as well as on the experimental results of dust remobilization. The latter is discussed in the light of data from other machines and a physical interpretation is suggested for the observed spatial localization of the dust remobilization activity. Evidence of rearrangement of isolated dust into clusters and strings is also presented.
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| 14. |
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| 15. |
- Bessani, A., et al.
(författare)
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BiobankCloud : A platform for the secure storage, sharing, and processing of large biomedical data sets
- 2016
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Ingår i: 1st International Workshop on Data Management and Analytics for Medicine and Healthcare, DMAH 2015 and Workshop on Big-Graphs Online Querying, Big-O(Q) 2015 held in conjunction with 41st International Conference on Very Large Data Bases, VLDB 2015. - Cham : Springer. - 9783319415758 - 9783319415765 ; , s. 89-105
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Konferensbidrag (refereegranskat)abstract
- Biobanks store and catalog human biological material that is increasingly being digitized using next-generation sequencing (NGS). There is, however, a computational bottleneck, as existing software systems are not scalable and secure enough to store and process the incoming wave of genomic data from NGS machines. In the BiobankCloud project, we are building a Hadoop-based platform for the secure storage, sharing, and parallel processing of genomic data. We extended Hadoop to include support for multi-tenant studies, reduced storage requirements with erasure coding, and added support for extensible and consistent metadata. On top of Hadoop, we built a scalable scientific workflow engine featuring a proper workflow definition language focusing on simple integration and chaining of existing tools, adaptive scheduling on Apache Yarn, and support for iterative dataflows. Our platform also supports the secure sharing of data across different, distributed Hadoop clusters. The software is easily installed and comes with a user-friendly web interface for running, managing, and accessing data sets behind a secure 2-factor authentication. Initial tests have shown that the engine scales well to dozens of nodes. The entire system is open-source and includes pre-defined workflows for popular tasks in biomedical data analysis, such as variant identification, differential transcriptome analysis using RNA-Seq, and analysis of miRNA-Seq and ChIP-Seq data.
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| 16. |
- Dimitrova, Daniela V., et al.
(författare)
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Election News in Sweden and the United States : A Comparison of Sources and Media Frames
- 2012
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Ingår i: Journalism - Theory, Practice & Criticism. - : SAGE Publications. - 1464-8849 .- 1741-3001. ; 13:5, s. 604-619
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Tidskriftsartikel (refereegranskat)abstract
- This study compares election news coverage in two different countries-Sweden and the United States, focusing on the use of the strategic game frame and the conflict frame and the association between these two frames and different types of news sources. The content analysis includes early evening newscasts from CBS Evening News, NBC Nightly News and ABC World News in the USA and Rapport, Aktuellt and TV4 Nyheterna inSweden. The findings show that the strategic game frame is used more frequently in the US coverage and is correlated with the use of media analysts and campaign operatives in both countries. Ordinary citizens as sources contribute to issue framing while domestic political actors tend to be associated with conflict framing. Differences in media framing between public and private media are also identified and discussed in the context of national political and media systems. © 2011 The Author(s).
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| 17. |
- Dimitrova, D. V., et al.
(författare)
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Exploring semi-structural differences in television news between the United States and Sweden
- 2010
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Ingår i: International Communication Gazette. - : SAGE Publications. - 1748-0485 .- 1748-0493. ; 72:6, s. 487-502
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of this study is to explore differences in television news format and news framing between the US and Sweden. The study focuses on the news programs broadcast by the top three television networks in the US and the top two public service channels and the leading commercial television channel in Sweden: CBS Evening News, NBC Nightly News and ABC World News, and Rapport, Aktuellt and TV4 Nyheterna, respectively. Using the most different systems design, the content analysis reveals significant differences between the two countries across a number of important variables: amount of domestic vs foreign news coverage, level of journalistic visibility, length of politicians' sound bites, attribution of responsibility and thematic vs episodic framing of the news. The discussion addresses the possible causes for these crosscultural differences as well as the potential implications for news audiences in both countries.
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| 18. |
- Dimitrova, Daniela V., et al.
(författare)
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Exploring Structural Differences in Television News between the United States and Sweden
- 2008
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Ingår i: International Communication Association’s Annual Conference.
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Konferensbidrag (refereegranskat)abstract
- The purpose of this study is to explore structural differences in television news format and news framing between the United States and Sweden. The study focuses on the top three television networks in the United States and the top two public service channels and the leading commercial television channels in Sweden: CBS Evening News, NBC Nightly News and ABC World News, and Rapport, Aktuellt and TV4 Nyheterna, respecively. The results of the content analysis reveal significant differences between the two countries across a number of important variables: amount of domestic versus foreign news coverage, level of journalistic visibility, length of politician’s sound bites, attribution of responsibility, and thematic versus episodic framing of the news. The discussion addresses the possible causes for these cross-cultural differences as well as the potential implications for news audiences in both countries.
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| 19. |
- Dimitrova, Daniela V., et al.
(författare)
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Foreign Policy and the Framing of the 2003 Iraq War in Elite Swedish and US Newspapers
- 2008
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Ingår i: Media, War & Conflict. - : SAGE Publications. - 1750-6352 .- 1750-6360. ; 1:2, s. 203-220
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Tidskriftsartikel (refereegranskat)abstract
- This study investigated the framing of the Iraq War in the elite newspapers in Sweden and the USA during the offi cial war period, 20 March–1 May 2003. The content analysis revealed signifi cant cross-cultural differences in the framing of the war in terms of tone, frames and use of sources. The differences in framing were consistent with the characteristics of the national political environment and foreign policy stances in each country.
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| 20. |
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| 21. |
- Dimitrova, Daniela V, et al.
(författare)
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Look Who's Talking : Use of Sources in Newspaper Coverage in Sweden and the United States
- 2008
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Ingår i: Paper presented at the annual meeting of the International Communication Association, TBA, Montreal, Quebec, Canada Online.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Even though we live a global world cross-cultural comparisons of journalism practice remain rare. This study analyzed the use of sources in newspaper coverage in Sweden and the United States. Rather than focusing on one single event, the comparison utilizes data from three different events: the 2003 Iraq War, the 2002 national election in Sweden and the 2004 presidential election in the United States, and the 2005/2006 international controversy stemming from the publication of the Mohammad Cartoons. Some patterns across the three events emerged for the use of government officials, academic experts and citizens as sources but not for other types of sources. The findings are discussed in the context of news reporting and journalism within a distinct national political and media system.
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| 22. |
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| 23. |
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| 24. |
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| 25. |
- Dimitrova, Daniela V., et al.
(författare)
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The Conditionality of Source Use : Comparing Source Use in U.S. and Swedish Television News
- 2009
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Ingår i: Journal of Global Mass Communication. - : Marquette. - 1933-3218. ; 2:1/2, s. 149-166
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Tidskriftsartikel (refereegranskat)abstract
- While there is scholarly consensus regarding the importance of news sources, there are rather few comparative studies on how the media use sources. In addition, most of these focus mostly on the coverage of specific events, and are primarily based on print media. To go beyond these limitations and test the conditionality of source use, this study compares the use of sources in routine news coverage in television news in the United States and Sweden. The results show several differences in source use in Swedish and U.S. television news, but also a more complicated pattern of source use than anticipated. Most importantly, the results point towards the conditionality of source use depending on the type of news story and topic covered. The study warns against tendencies to generalize too far from single country-studies on source use or from comparative studies that are based on the media coverage of specific events or a single medium only.
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