| 1. |
- Karlsson, Tomas, 1964-, et al.
(författare)
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The MEFISTO and WPT Electric Field Sensors of the Plasma Wave Investigation on the BepiColombo Mio Spacecraft Measurements of Low and High Frequency Electric Fields at Mercury
- 2020
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Ingår i: Space Science Reviews. - : Springer Nature. - 0038-6308 .- 1572-9672. ; 216:8
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Forskningsöversikt (refereegranskat)abstract
- This paper describes the design of MEFISTO (Mercury Electric Field In-Situ Tool) and WPT (Wire Probe Antenna) electric field sensors for Plasma Wave Investigation (PWI) on the BepiColombo Mio spacecraft (Mercury Magnetospheric Orbiter, MMO). The two sensors will enable the first observations of electric fields, plasma waves and radio waves in and around the Hermean magnetosphere and exosphere. MEFISTO and WPT are dipole antennas with 31.6 m tip-to-tip length. Each antenna element has a spherical probe at each end of the wire (15 m length). They are extended orthogonally in the spin plane of the spacecraft and enable measurements of the electric field in the frequency range of DC to 10 MHz by the connection to two sets of receivers, EWO for a lower frequency range and SORBET for higher frequencies. In the initial operations after the launch (20 Oct. 2018), we succeeded to confirm the health of both antennas and to release the launch lock of the WPT. After Mercury orbit insertion planned at the end of 2025, both sensors will be fully deployed and activate full operations of the PWI electric field measurements.
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| 2. |
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| 3. |
- Överstam, Henrik
(författare)
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The influence of bearing geometry on the residual stress state in cold drawn wire, analysed by the FEM
- 2006
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Ingår i: Journal of Materials Processing Technology. - : Elsevier BV. - 0924-0136 .- 1873-4774. ; 171:3, s. 446-450
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Tidskriftsartikel (refereegranskat)abstract
- Finite element simulations have been performed in order to study the influence of bearing geometry on the residual stress-state in cold drawn wires. Experiments in full industrial scale have been performed in order to verify the FEM results. The residual stresses were measured with X-ray diffraction in both the axial and tangential direction. The material used was a high carbon steel for roller bearings, 100Cr6. It was found that the geometry of the bearing has a large influence of the residual stress-state. When the bearing is somewhat tapered, a gap in the beginning of the bearing is formed. This "double contact" reduces the axial and tangential residual stress to minimum or even to a compressive state. A cylindrical bearing gave no contact in the bearing at all due to elastic deformation. This resulted in a large axial and tangential residual stress. It was shown that even a small divergence from the desired bearing geometry due to the grinding of the die could affect the residual stress immensely.
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| 4. |
- Kirsebom, L.A
(författare)
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Escherichia coli RNase P.
- 2001
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Ingår i: Methods in ENZYMOLOGY. ; , s. 77-92
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Browaldh, Lars, et al.
(författare)
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Celiaki är en vanlig sjukdom som är lätt att missa
- 2014
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Ingår i: Läkartidningen. - : Swedish Medical Association. - 0023-7205 .- 1652-7518. ; 111:11, s. 484-488
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Tidskriftsartikel (refereegranskat)abstract
- Celiaki ansågs länge som en ovanlig barnsjukdom, men är en vanlig sjukdom som drabbar alla åldrar. Genomförda screeningar av normalbefolkningen visar att merparten inte fått diagnos eller behandling. Den kliniska bilden varierar: alltifrån diffusa besvär eller inga symtom alls till allvarliga gastrointestinala symtom med grav avmagring och tillväxtrubbning till följd av malabsorption. Klinisk misstanke om eller hereditet för celiaki bör föranleda analys av specifika serologiska markörer. Gastroskopi med tunntarmsbiopsi bör övervägas för att bekräfta eller utesluta diagnosen.
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| 6. |
- Lieber, R. L., et al.
(författare)
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Biomechanical properties of the brachioradialis muscle: Implications for surgical tendon transfer
- 2005
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Ingår i: J Hand Surg [Am]. - 0363-5023. ; 30:2, s. 273-82
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Tidskriftsartikel (refereegranskat)abstract
- PURPOSE: To understand the mechanical properties of the brachioradialis (BR) muscle and to use this information to simulate a BR-to-flexor pollicis longus (FPL) tendon transfer for restoration of lateral pinch. METHODS: The BR mechanical properties were measured intraoperatively. Passive elastic properties were measured by elongating BR muscles at constant velocity while they were attached directly to a dual-mode servomotor. Sarcomere length was measured intraoperatively and in situ by laser diffraction with the elbow fully extended. Then both the mechanical and structural properties were programmed into a surgical simulator to test the hand surgeon's decision making when tensioning muscles in a simulated BR-to-FPL tendon transfer. RESULTS: Passive mechanical BR properties were highly nonlinear. Under slack conditions sarcomere length (mean +/- standard deviation) was 2.81 +/- 0.10 microm (n = 4), corresponding to an active force of 93% maximum. Sarcomere length of the BR measured in situ with the elbow fully extended and the forearm in neutral rotation was 3.90 +/- 0.27 microm (n = 8), corresponding to an active force of only 23% maximum. Surgeons, who tensioned the BR for transfer into the FPL using only tactile feedback from the surgical simulator, attached the muscle at a passive tension of 5.87 +/- 0.97 N, which corresponded to a sarcomere length of 3.84 microm and an active muscle force of 27% maximum. Passive BR tension when both tactile and visual information were provided to the surgeon was significantly lower (2.42 +/- 0.72 N), corresponding to a sarcomere length of 3.56 mum and a much higher active muscle force of 45% maximum. CONCLUSIONS: When these data were used to model pretransfer and posttransfer function dramatic differences in predicted function were obtained depending on the tensioning protocol chosen. This emphasizes the point that the decision-making process used during muscle tensioning has a profound effect on the functional outcome of the transfer.
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| 8. |
- Svedberg Helgesson, Karin, et al.
(författare)
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Conclusions: The Manifestations of Securitization
- 2012
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Ingår i: Securitization, Accountability and Risk Management: Transforming the Public Security Domain. - : Routledge. - 9780203128282 - 9780415680141
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 9. |
- Widberg, Cecilia, et al.
(författare)
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Patients’ experiences of eHealth in palliative care : an integrative review
- 2020
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Ingår i: BMC Palliative Care. - : Springer Science and Business Media LLC. - 1472-684X. ; 19:1, s. 1-14
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Forskningsöversikt (refereegranskat)abstract
- Background: With a growing world population, a longer life expectancy, and more deaths due to chronic diseases, the need for palliative care is increasing. Palliative care aims to alleviate suffering and to promote well-being for patients with progressive, incurable disease or injury. E-Health entails using of information and communication technology for healthcare provision. It is unclear to how patients experience use of eHealth technology within palliative care.Methods: The aim of this study was to describe patients’ experiences of eHealth in palliative care. A systematic integrative review was performed using six databases: Cinahl Complete; MEDLINE; PubMed; Psychology and Behavioral Sciences Collection; Nursing and Allied Health; and PsycINFO. Twelve studies met the inclusion criteria of adult patients in palliative care, English language, published 2014–2019: comprising 397 patients. Six studies were from European countries, four from North America, one from South America and one from Oceania. Seven were feasibility or pilot studies.Results: The findings are synthesized in the main theme: E-health applications – promoting communication on patients’ and families’ terms, and three sub- themes: usability and feasibility of eHealth applications; symptom control and individualized care; and use of eHealth applications increased sense of security and patient safety. Patients’ experiences were that eHealth promoted individualized care, sense of security, better symptom management and participation in care. Communication was facilitated by the inherent flexibility provided by technology.Conclusions: E-Health applications seem promising in promoting equal, individualized care, and may be a tool to endorse accessibility and patient participation in palliative care settings. Indications are that eHealth communication resulted in patients and families receiving more information, which contributed to experiences of patient safety and feelings of security. At organizational and societal levels, eHealth may contribute to sustainable development and more efficient use of resources.
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