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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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| 2. |
- 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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| 3. |
- Krasilnikov, A., et al.
(författare)
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Evidence of 9 Be + p nuclear reactions during 2ω CH and hydrogen minority ICRH in JET-ILW hydrogen and deuterium plasmas
- 2018
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Ingår i: Nuclear Fusion. - : IOP Publishing. - 1741-4326 .- 0029-5515. ; 58:2
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Tidskriftsartikel (refereegranskat)abstract
- The intensity of 9Be + p nuclear fusion reactions was experimentally studied during second harmonic (2ω CH) ion-cyclotron resonance heating (ICRH) and further analyzed during fundamental hydrogen minority ICRH of JET-ILW hydrogen and deuterium plasmas. In relatively low-density plasmas with a high ICRH power, a population of fast H+ ions was created and measured by neutral particle analyzers. Primary and secondary nuclear reaction products, due to 9Be + p interaction, were observed with fast ion loss detectors, γ-ray spectrometers and neutron flux monitors and spectrometers. The possibility of using 9Be(p, d)2α and 9Be(p, α)6Li nuclear reactions to create a population of fast alpha particles and study their behaviour in non-active stage of ITER operation is discussed in the paper.
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| 6. |
- Joffrin, E., et al.
(författare)
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Overview of the JET preparation for deuterium-tritium operation with the ITER like-wall
- 2019
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Ingår i: Nuclear Fusion. - : IOP Publishing. - 1741-4326 .- 0029-5515. ; 59:11
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Forskningsöversikt (refereegranskat)abstract
- For the past several years, the JET scientific programme (Pamela et al 2007 Fusion Eng. Des. 82 590) has been engaged in a multi-campaign effort, including experiments in D, H and T, leading up to 2020 and the first experiments with 50%/50% D-T mixtures since 1997 and the first ever D-T plasmas with the ITER mix of plasma-facing component materials. For this purpose, a concerted physics and technology programme was launched with a view to prepare the D-T campaign (DTE2). This paper addresses the key elements developed by the JET programme directly contributing to the D-T preparation. This intense preparation includes the review of the physics basis for the D-T operational scenarios, including the fusion power predictions through first principle and integrated modelling, and the impact of isotopes in the operation and physics of D-T plasmas (thermal and particle transport, high confinement mode (H-mode) access, Be and W erosion, fuel recovery, etc). This effort also requires improving several aspects of plasma operation for DTE2, such as real time control schemes, heat load control, disruption avoidance and a mitigation system (including the installation of a new shattered pellet injector), novel ion cyclotron resonance heating schemes (such as the three-ions scheme), new diagnostics (neutron camera and spectrometer, active Alfven eigenmode antennas, neutral gauges, radiation hard imaging systems...) and the calibration of the JET neutron diagnostics at 14 MeV for accurate fusion power measurement. The active preparation of JET for the 2020 D-T campaign provides an incomparable source of information and a basis for the future D-T operation of ITER, and it is also foreseen that a large number of key physics issues will be addressed in support of burning plasmas.
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| 24. |
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- 2018
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Ingår i: Nuclear Fusion. - : IOP Publishing. - 1741-4326 .- 0029-5515. ; 58:9
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Tidskriftsartikel (refereegranskat)
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| 25. |
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Overview of the JET results
- 2015
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Ingår i: Nuclear Fusion. - : IOP Publishing. - 0029-5515 .- 1741-4326. ; 55:10
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Tidskriftsartikel (refereegranskat)
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| 26. |
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| 27. |
- Stankunas, M., et al.
(författare)
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Healthcare and aging : Do European Union countries differ?
- 2016
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Ingår i: International Journal of Health Care Quality Assurance. - 0952-6862 .- 1758-6542. ; 29:8, s. 895-906
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: The purpose of this paper is to evaluate socio-economic inequalities in the use, accessibility and satisfaction with health services amongst 60-84 year old people from seven European urban communities. Design/methodology/approach: Data for this study were collected in 2009. The target population was people aged 60-84 years from Stuttgart (Germany), Athens (Greece), Ancona (Italy), Kaunas (Lithuania), Porto (Portugal), Granada (Spain) and Stockholm (Sweden). The total sample comprised 4,467 respondents with a mean response rate across these countries of 45.2 per cent. Findings: The study demonstrated that the majority of respondents had contact with a health care provider within the last 12 months. The highest percentages were reported by respondents from Spain (97.8 per cent) and Portugal (97.7 per cent). The results suggest that 13.0 per cent of respondents had refrained from seeking care services. The highest rates were amongst seniors from Lithuania (24.0 per cent), Germany (16.2 per cent) and Portugal (15.4 per cent). Logistic regression suggests that seniors who refrained from seeking health care was statistically significant associated with those with higher levels of education (odds ratios (OR)=1.21; 95 per cent confidence intervals (CI)=1.01-1.25) and financial strain (OR=1.26; 95 per cent CI=1.16-1.37). Furthermore, the majority of respondents were satisfied with health care services. Originality/value: The findings from the “Elder Abuse: a multinational prevalence survey” study indicate the existence of significant variations in use, accessibility and satisfaction with health services by country and for socio-economic factors related to organizing and financing of care systems.
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| 30. |
- Fraga, S, et al.
(författare)
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Lifetime Abuse and Quality of Life among Older People
- 2017
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Ingår i: Health & Social Work. - : Oxford University Press (OUP). - 0360-7283 .- 1545-6854. ; 42:4, s. 215-222
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Tidskriftsartikel (refereegranskat)abstract
- Few studies have evaluated the impact of lifetime abuse on quality of life (QoL) among older adults. By using a multinational study authors aimed to assess the subjective perception of QoL among people who have reported abuse during the course of their lifetime. The respondents (N = 4,467; 2,559 women) were between the ages of 60 and 84 years and living in seven European countries (Germany, Greece, Italy, Lithuania, Portugal, Spain, and Sweden). Lifetime abuse was assessed by using a structured questionnaire that allowed to assess lifetime experiences of abuse. QoL was assessed with the World Health Organization Quality of Life–Old module. After adjustment for potential confounders, authors found that to have had any abusive experience decreased the score of sensory abilities. Psychological abuse was associated with lower autonomy and past, present, and future activities. Physical abuse with injuries significantly decreased social participation. Intimacy was also negatively associated with psychological abuse, physical abuse with injury, and sexual abuse. The results of this study provide evidence that older people exposed to abuse during their lifetime have a significant reduction in QoL, with several QoL domains being negatively affected.
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| 31. |
- Macassa, Gloria, et al.
(författare)
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Employment status and differences in physical activity behavior during times of economic harship: Results of a population-based study
- 2016
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Ingår i: International Journal of Medical science and Public Health. - : ScopeMed. - 2277-338X .- 2320-4664. ; 5:1, s. 102-108
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Tidskriftsartikel (refereegranskat)abstract
- Background: The recent economic recession has lead to an increased unemployment in many countries worldwide. In addition, research has suggested that economic recession can have an impact on an individual's health behaviors, including engagement in physical activity. Gävleborg County in southeast Sweden, experienced massive job losses owing to the closures of large industries and small companies, which resulted in an increased unemployment rate in 2010, at the pick of the economic recession.Objective: To investigate the differences in physical activity by employment status among economically active persons living in Gävleborg County in 2010.Materials and Methods: The data were obtained from a cross-sectional survey carried out in Gävleborg County, in 2010, among the residents aged 16–65 years (n = 4,245). Data analysis was carried out using descriptive statistics and weighted logistic regression.Result: There was a statistically significant association between employment status and physical activity. People who were not employed in 2010 showed higher odds of physical inactivity when compared with their employed counterparts. The differences in physical activity behavior were explained, mainly, by health and socioeconomic and related factors.Conclusion: Being outside the labor market was associated with increased physical inactivity during a period of economic recession in Gävleborg County. From a policy perspective, our study suggests the need to promote physical activity during times of high unemployment in order to foster better health behaviors.
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| 32. |
- Stankunas, Gediminas, et al.
(författare)
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Activation inventories after exposure to dd/dt neutrons in safety analysis of nuclear fusion installations
- 2018
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Ingår i: Radiation Protection Dosimetry. - : OXFORD UNIV PRESS. - 0144-8420 .- 1742-3406. ; 180:1-4, s. 125-128
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Tidskriftsartikel (refereegranskat)abstract
- Irradiations with 14 MeV fusion neutrons are planned at Joint European Torus (JET) in DT operations with the objective to validate the calculation of the activation of structural materials in functional materials expected in ITER and fusion plants. This study describes the activation and dose rate calculations performed for materials irradiated throughout the DT plasma operation during which the samples of real fusion materials are exposed to 14 MeV neutrons inside the JET vacuum vessel. Preparatory activities are in progress during the current DD operations with dosimetry foils to measure the local neutron fluence and spectrum at the sample irradiation position. The materials included those used in the manufacturing of the main in-vessel components, such as ITER-grade W, Be, CuCrZr, 316 L(N) and the functional materials used in diagnostics and heating systems. The neutron-induced activities and dose rates at shutdown were calculated by the FISPACT code, using the neutron fluxes and spectra that were provided by the preceding MCNP neutron transport calculations.
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