| 1. |
- Bengtsson, Jonas, et al.
(författare)
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Sexual function after failed ileal pouch-anal anastomosis
- 2011
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Ingår i: Journal of Crohn's and Colitis. - : Elsevier. - 1873-9946. ; 5:5, s. 407-414
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Tidskriftsartikel (refereegranskat)abstract
- Background and AimsFailure of ileal pouch-anal anastomosis (IPAA) occurs in around 10% of the patients. Compared to patients with functioning pouches, health related quality of life is deteriorated after failure. Sexual function in patients with pouch failure is however poorly studied.The aim was to study sexual function in patients with pelvic pouch failure; patients with functioning pouches were used as controls. The hypothesis was that patients with pouch failure have worse sexual function.Methods36 patients with pouch failure were compared with 72 age and sex-matched controls with ulcerative colitis and functioning pouches. The patients answered a set of questionnaires concerning sexual function (Female Sexual Function Index [FSFI] and International Index of Erectile Function [IIEF]), body image (BIS-scale) and health-related quality of life (SF-36).ResultsBoth women and men with pouch failure scored lower than controls in the FSFI and IIEF questionnaires. However, none of the observations were statistically significant. The scores in the failure group (for both sexes) were below the cut-off level for sexual dysfunction. Scores for the BIS instrument were significantly lower for both sexes in the failure group. Women and men in the failure group scored lower than the controls in all domains of the SF-36, however statistically significant only for the social function domain in men.ConclusionsThe hypothesis, that a failed IPAA is associated with worse sexual function, was not confirmed. Compared to patients with functioning pouches, patients with pouch failure have inferior body image.
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| 2. |
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| 3. |
- Bengtsson, Staffan, 1970-, et al.
(författare)
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Närhet och kommunikation på distans : en studie om hur studenter och lärare beskriver och upplever lärcenter/högskolecentrumbaserad utbildning
- 2011
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Rapport (refereegranskat)abstract
- Since 2003 the University West in Sweden offers distance courses in Social work and Social pedagogy. The three year program is given in collaboration with a number of local learning centers throughout the country. The technology of videoconferencing enables the teacher to interact with students even though they are separated geographically.The study deals with this kind of education seen from the perspective of both students and teachers. The main objective is to illuminate significant aspects of this kind of phenomenon in terms of how students and teachers describe and experience problems and potential embedded in this model. The discussion rests on four overall questions:1) What are the motives for students to choose this kind of education?2) What kind of expectations did the students have before they started the program?3) How do students experience/describe strengths and weaknesses connected to this model?4) What experiences do the teacher's have working with this kind of distance education?The empirical data has been collected using mainly group interviews and observations. The analysis rests heavily on theories concerning symbolic interactionism and socio-cultural learning. The study underlines that both students and teachers embrace the potential in this form of education, giving more groups the possibility of combining their studies with a sense of regional belonging. However the interviews and observations also reveal weaknesses with this kind of educational model. There is a risk that students at the local learning centers consider themselves as being excluded by teachers and other students at campus; and that the gap between the university and the local learning centers becomes too wide. To prevent this from happening communication and confirmation from the teacher is crucial. But eventhough this scrutiny identifies weaknesses within the technology of videoconferencing, technology alone does not determine the outcome of the teaching. If a teacher manages to show great engagement and structure, this functions as a mechanism weakening the barrierof technology. At the same time it is clear that the model of videoconferencing, from a teacher perspective, can be an obstacle, which emphasizes the importance of developing the technology further and how this technology is being handled by the teacher.Finally, we consider the model with local learning centers and videoconferencing as a unique model for education, but that the model, when it comes to areas such as pedagogy, organization and technology, must be allowed to function and develop according to its own premises.
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| 4. |
- Bengtsson, Staffan, 1970-, et al.
(författare)
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Projektmänniskan : arbetsrehabiliteringens möte med den enskilde
- 2014
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Ingår i: Arbetsmarknad & Arbetsliv. - Karlstad : Karlstads universitet. - 1400-9692 .- 2002-343X. ; 20:2, s. 25-40
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Tidskriftsartikel (refereegranskat)abstract
- Artikeln handlar om hur välfärdsorganisationer och deras tjänstemän kopplade till aktivitets- och sysselsättningsåtgärder agerar i mötet med den enskilde och vilka berättelser som skapas om individerna. Artikeln diskuterar hur projektdeltagaren omgärdas av en fortgående medikalisering och en social fragmentisering, där projektdeltagarens problematik reduceras och där individens egen röst tycks få ett begränsat utrymme.
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| 5. |
- Nilsson, Stefan, 1975-, et al.
(författare)
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Exploring Awareness
- 2000
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Konferensbidrag (refereegranskat)
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| 6. |
- Svensson, Lars-Erik, 1951-, et al.
(författare)
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Strength and Impact Toughness of High Strength Steel Weld Metals : Influence of Welding Method, Dilution and Cooling Rate
- 2015
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Ingår i: Proceedings of IIW International Conference, High-Strength Materials. - Helsingfors. ; , s. 1-9
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Konferensbidrag (refereegranskat)abstract
- Producing welds with properties matching those of the steel is a challenge at high strength levels. The present study has investigated how the choice of welding method affects weld metal mechanical properties through effects on dilution and cooling rate. Butt welds were produced in 12 mm plates in 777 MPa and 1193 MPa yield strength steels. Conventional arc welding methods including manual metal arc, gas metal arc welding, rapid arc welding and submerged arc welding were used as well as laser-gas metal arc hybrid welding. Filler materials with nominal yield strengths between 810 and 1000 MPa were used. Cooling times between 800 C and 500 C were varied between 5s and 15s and measured by insertion of thermocouples into the weld pool.High quality welds were produced efficiently with all welding methods even though dilution varied between 3%, for manual metal arc welding, to 73% for laser-hybrid welding. Low dilution, rapid cooling and single pass welding contributed to higher strength. Overmatching weld metal strength was achieved for the less strong steel and weld yield strengths of >1000 MPa were recorded for the stronger steel. Fracture in transverse tensile testing was always located in base material or HAZ. Impact toughness was higher for lower strength and low dilution. Results are discussed relating choice of welding method and cooling rate to weld metal properties for different steel strength levels.
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| 7. |
- Valiente Bermejo, María Asunción, 1972-, et al.
(författare)
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Effect of shielding gas on welding performance and properties of duplex and superduplex stainless steel welds
- 2015
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Ingår i: Welding in the World. - : Springer Science and Business Media LLC. - 0043-2288 .- 1878-6669. ; 59:2, s. 239-249
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Tidskriftsartikel (refereegranskat)abstract
- The influence of shielding gases on welding performanceand on properties of duplex and superduplex stainlesssteel welds was studied. Using argon as the reference gas,helium, nitrogen and carbon dioxide were added and fivemixtures evaluated. Bead-on-plate welds and circumferentialpipe welds were produced using mechanisedGMAwelding inthe downhand position. Welding performance, corrosion resistance,mechanical properties, microstructural features andweld imperfections were assessed and related to the shieldinggas. Shielding gases containing 30 % helium showed excellentresults; whilst pure argon showed unstable arc and poorweld pool fluidity and Ar+2 %CO2 resulted in underfill andporosity. Mixtures containing helium resulted in higher ductilitywelds and higher impact toughness values than weldsproduced with Ar+2 %CO2. Sound and balanced duplexmicrostructures free from intermetallics were found with suitableferrite contents for all the shielding gases studied. All theduplex pipe welds passed the corrosion test regardless of theshielding gas used, and the best results in the corrosion test forsuperduplex pipe welds were found when using Ar+30 %He+0.5 %CO2+1.8 %N2 as shielding gas.
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| 8. |
- Valiente Bermejo, María Asunción, 1972-, et al.
(författare)
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Effect of welding position on properties of duplex and superduplex stainless steel circumferential welds
- 2015
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Ingår i: Welding in the World. - : Springer Science and Business Media LLC. - 0043-2288 .- 1878-6669. ; 59:5, s. 693-703
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Tidskriftsartikel (refereegranskat)abstract
- The influence of welding position on properties ofduplex and superduplex stainless steel welds was studied. Circumferential pipe welds were produced using mechanised gasmetal arc welding in flat position, vertical up position and overhead position. Dilution, corrosion resistance, mechanical properties, microstructural features and weld imperfections were assessed and related to the welding position. Welds produced in flat and vertical up positions were less likely to produce porosity than those welded in overhead position, whilst underfill was not observed in overhead position welds. All the duplex pipe welds passed the corrosion test regardless of the welding position and showed sound microstructures. Under fixed arc energy conditions, welds produced in vertical up position showed the lowest dilution values whilst welds in flat position showed the highest. Excellent impact toughness values and cross tensile values were found regardless of the welding positions. Whenever possible, flat position is recommended as welds showed less proneness to porosity. Vertical up position is recommended as the second best choice.
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| 9. |
- Valiente Bermejo, María Asunción, 1972-, et al.
(författare)
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Influenza del gas di protezione sul comportamento e le proprietà di giunti sa dati di acciai duplex e superduplex : Effect of shielding gas on welding performance and properties of duplex and superduplex stainless steel welds
- 2016
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Ingår i: Rivista Italiana della Saldatura. - : Istituto Italiano della Saldatura. - 0035-6794. ; 68:5, s. 635-650
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The influence of shielding gases on welding performance and on properties of duplex and superduplex stainless steel welds was studied. Using argon as the reference gas, helium, nitrogen and carbon dioxide were added and five mixtures evaluated. Bead-on-plate welds and circumferential pipe welds were produced using mechanised GMA welding in the downhand position. Welding performance, corrosion resistance, mechanical properties, microstructural features and weld imperfections were assessed and related to the shielding gas. Shielding gases containing 30% helium showed excellent results; whilst pure argon showed unstable arc and poor weld pool fluidity and Ar + 2% CO2resulted in underfill and porosity. Mixtures containing helium resulted in higher ductility welds and higher impact toughness values than welds produced with Ar + 2% CO2. Sound and balanced duplex microstructures free from intermetallics were found with suitable ferrite contents for all the shielding gases studied. All the duplex pipe welds passed the corrosion test regardless of the shielding gas used, and the best results in the corrosion test for superduplex pipe welds were found when using Ar + 30%He + 0.5% CO2+ 1.8% N2as shielding gas.
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