| 1. |
- Andréasson, Maia, 1960, et al.
(author)
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Swedish CLARIN activities
- 2009
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In: Proceedings of the Nodalida 2009 workshop on CLARIN activities in the Nordic countries. NEALT Proceedings Series. - 1736-6305. ; 5, s. 1-5
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Conference paper (peer-reviewed)
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| 2. |
- Andréasson, Maia, et al.
(author)
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Swedish CLARIN Activities
- 2009
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In: Proceedings of the NODALIDA 2009 workshop Nordic Perspectives on the CLARIN Infrastructure of Language Resources. - : Northern European Association for Language Technology (NEALT). ; , s. 1-5
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Conference paper (peer-reviewed)abstract
- Although Sweden has yet to allocate funds specifically intended for CLARIN activities, there are some ongoing activities which are directly relevant to CLARIN, and which are explicitly linked to CLARIN. These activities have been funded by the Committee for Research Infrastructures and its subcommittee DISC (Database Infrastructure Committee) of the Swedish Research Council.
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| 6. |
- Azeez, Ahmed, et al.
(author)
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Low Cycle Fatigue Modelling of Steam Turbine Rotor Steel
- 2019
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In: 9th International Conference Materials Structure & Micromechanics of Fracture (MSMF9). - : Elsevier. ; , s. 149-154, s. 149-154
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Conference paper (peer-reviewed)abstract
- Materials in steam turbine rotors are subjected to cyclic loads at high temperature, causing cracks to initiate and grow. To allow for more flexible operation, accurate fatigue models for life prediction must not be overly conservative. In this study, fully reversed low cycle fatigue tests were performed on a turbine rotor steel called FB2. The tests were done isothermally, within temperature range of room temperature to 600 °C, under strain control with 0.8-1.2 % total strain range. Some tests included hold time to calibrate the short-time creep behaviour of the material. Different fatigue life models were constructed. The life curve in terms of stress amplitude was found unusable at 600 °C, while the life curve in terms of total strain or inelastic strain amplitudes displayed inconsistent behaviour at 500 °C. To construct better life model, the inelastic strain amplitudes were separated into plastic and creep components by modelling the deformation behaviour of the material, including creep. Based on strain range partitioning approach, the fatigue life depends on different damage mechanisms at different strain ranges. This allowed the formulation of life curves based on plasticity or creep domination, which showed creep domination at 600 °C, while at 500 °C, creep only dominates for higher strain range.
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| 7. |
- Bladh, Sara, et al.
(author)
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Exploring Mass-Loss in M-type AGB Stars
- 2015
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In: WHY GALAXIES CARE ABOUT AGB STARS III. - : ASTRONOMICAL SOC PACIFIC. ; , s. 345-350
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Conference paper (peer-reviewed)abstract
- Stellar winds observed in asymptotic giant branch (AGB) stars are usually attributed to a combination of stellar pulsations and radiation pressure on dust. Strong candidates for wind-driving dust species in M-type AGB stars are magnesium silicates (Mg2SiO4 and MgSiO3). Such grains can form close to the stellar surface; they consist of abundant materials and, if they grow to sizes comparable to the wavelength of the stellar flux maximum, they experience strong acceleration by photon scattering. Here we present results from an extensive set of time-dependent wind models for M-type AGB stars with a detailed description for the growth of Mg2SiO4 grains. We show that these models reproduce observed mass-loss rates and wind velocities, as well as visual and near-IR photometry. However, the current models do not show the characteristic silicate features at 10 and 18 mu m, due to a rapidly falling temperature of Mg2SiO4 grains in the wind. Including a small amount of Fe in the grains further out in the circumstellar envelope will increase the grain temperature and result in pronounced silicate features, without significantly affecting the photometry in the visual and near-IR.
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| 8. |
- Cinthio, Magnus, et al.
(author)
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Estimation of arterial pulse wave velocity with a new improved tissue Doppler method
- 2001
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In: 2001 Conference Proceedings of the 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society. - 0780372115 ; , s. 188-191
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Conference paper (other academic/artistic)abstract
- The mechanical properties of the large arteries are important determinants in the circulation physiology. Quantities associated with vessel wall elasticity are of particular interest since they offer a possibility to separate diseased arteries from healthy. Pulse wave velocity (PWV) is a local measure of the arterial wall elasticity. This paper describes a new improved method for non-invasive local PWV estimation. The PWV estimation is based on arterial wall movements, which is detected by Tissue Doppler Imaging (TDI), a color Doppler optimized for low velocities. The TDI facility allows the artery to be measured at several positions simultaneously, which improves the PWV estimation considerably. The method is validated with respect to operator repeatability and operator reproducibility in a limited clinical study.
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| 10. |
- Eriksson, Bengt, et al.
(author)
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Use of measured climatic data to estimate the micro environment at buildings
- 2000
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In: ILCDES 2000 Helsinki, Finland.
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Conference paper (peer-reviewed)abstract
- A large part of the building stock and infrastructure will sooner or later fa11 into disrepair and make the economic and the cultural costs significant due to deficient maintenance. To make the maintenance more efficient and reduce the costs there is a need to predict the service life of building components and materials. In order to estimate the service life of a building component or material the environmental impact as well as the dose-response function must be known. Many dose-response functions are today available and in this paper we focus on the estimation of the environmental impact. In many countries meteorological measurements have been performed for several years and on many locations. In Sweden meteorological data can be collected for, in principle, any time period in the second half of the century and for several different locations. The number of climatic stations has gradually increased since the first measurements started in the 1860ies and is today around 900. The measured climatic data must be transformed into the actual impact ont0 different building materials. In order to perform such transformations the surroundings of the building as well as the building itself must be considered. Such calculations have been performed using the European standard prEN 13013-3 and measurements with the Wetcorr technique on a building in the central Gavle, Berggrenska garden. We have used climatic data measured at the official meteorological station north of Gavle, mainly focussing on precipitation and wind.
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