| 1. |
- Stenberg, Å M, et al.
(författare)
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Lack of distant migration after injection of a 125iodine labeled dextranomer based implant into the rabbit bladder
- 1997
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Ingår i: Journal of Urology. - 0022-5347 .- 1527-3792. ; 158:5, s. 1937-1941
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Tidskriftsartikel (refereegranskat)abstract
- PURPOSE:In recent years endoscopic treatment of stress incontinence and vesicoureteral reflux has been introduced. Reports of possible particle migration of the injected material to distant organs in humans and experimental animals have led to a search for biological nonmigration products. An implant found to have a good clinical effect in these conditions is dextranomer in hyaluronan. We performed this study in rabbits to investigate the possible migration of dextranomer particles.MATERIALS AND METHODS:125Iodine labeled dextranomer particles were injected into the submucosal space of rabbit bladders, and samples of blood and various tissues were examined for radioactivity at scheduled intervals during a 28-day period. Furthermore, whole body autoradiography was performed 1 day, and 1 and 4 weeks after injection.RESULTS:Radioactivity was found in blood samples and in all tissues but it remained at the background activity level except in the thyroid, where uptake representing free 125iodine was detected. In the bladder 41 and 45% of the injected dose remained within the bladder wall 1 day and 4 weeks, respectively, after injection. The remainder of the dose probably disappeared from the bladder wall by leakage into the urine shortly after deposition, as indicated by the finding of 10-fold higher urine radioactivity levels at day 1 than at day 28 after injection.CONCLUSIONS:No distant migration of dextranomer particles occurs after submucosal injection of such an implant in the rabbit bladder wall.
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| 2. |
- Tillberg, Anders, et al.
(författare)
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Changes in health over time in patients with symptoms allegedly caused by dental restorative materials
- 2005
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Ingår i: Community Dentistry and Oral Epidemiology. - : John Wiley & Sons, Inc. - 0301-5661 .- 1600-0528. ; 33:6, s. 427-437
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Tidskriftsartikel (refereegranskat)abstract
- Abstract – Objectives: In Sweden, many patients with symptoms allegedly caused by their dental materials have exchanged their restorations, but the effects of the exchange have been insufficiently investigated. Therefore, the aim of the study was to describe the change in health over time for these patients and the hypothesis was that the patients could be divided based on their symptoms and that the ability to recover differs between these groups. Furthermore, we also examined if other factors such as replacement of dental restorative materials and follow-up time had any impact on the perceived health status.Methods: A questionnaire was sent to 614 patients who had been referred to the School of Dentistry, Umeå, Sweden, with symptoms allegedly caused by dental restorative materials. The response rate was 55%.Results: The risk of having any further complaints was higher for patients with complex symptoms (P = 0.03) and these patients had exchanged their restorations to a significantly larger extent than the others (P = 0.03). The remaining complaints was more frequent among men (P = 0.02). Exchange of dental restorative materials had no significant impact on the ability to recover completely. However, the patients who had exchanged their restorations completely perceived a significantly larger alleviation of their symptoms than the others (P < 0.01), although the frequency of most of the symptoms had increased.Conclusions: Patients with complex symptoms had a more unfavorable long-term prognosis concerning persistent complaints than those with localized symptoms only. Furthermore, the results indicate that the patients might experience health improvements after removal of their dental restorative materials. The reason for this improvement, however, is unclear. Further analyses regarding other possible explanations than the ‘odontological/medical’ are needed.
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| 3. |
- Tillberg, Anders, 1954-, et al.
(författare)
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Reactions to resin-based dental materials in patients-type, time to onset, duration, and consequence of the reaction.
- 2009
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Ingår i: Contact Dermatitis. - : Wiley. - 0105-1873 .- 1600-0536. ; 61:6, s. 313-319
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: The aim of the present study was to determine the types of side-effects occurring and for how long they lasted in a group of patients with side-effects assessed to be caused by resin-based materials. METHODS: A total of 618 reports were received by the Swedish National Register of Side-Effects to Dental Materials, among which 36 were on patients with reactions assessed to be caused by resin-based restorative materials. The group examined consisted of 25 women and 11 men, with a mean age of 47.8 +/- 15.6 years. A follow-up was done through a structured telephone interview. RESULTS: The majority of symptoms were intra-oral or a combination of intra-oral and extra-oral symptoms that appeared within the first 24 hr after treatment. The most common adverse effects reported were skin problems, oral ulcers, and burning mouth. Within less than a week, the reactions had disappeared in 50% of the patients. CONCLUSION: Immediate reactions to resin-based materials were more prevalent than delayed allergic reactions, and the mechanism of the immediate reactions is probably non-allergic in most cases. There is a need for developing provocation tests to verify the association between the reaction and the material, and also to identify the offending component.
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| 4. |
- Andersson, Dan-Erik, et al.
(författare)
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Källmaterialet förstördes
- 2009
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Ingår i: Sydsvenskan. - 1652-814X.
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Tidskriftsartikel (populärvet., debatt m.m.)
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| 5. |
- Axelsson, Roger, et al.
(författare)
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Vuxenutbildningens betydelse för inkomster, mobilitet och övergång till högskolestudier
- 2005
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- I början av 1990-talet befann sig Sverige i en kraftig konjunkturnedgång. Arbetslösheten hade stigit till rekordhöga nivåer. Bland de åtgärder regeringen vidtog för att motverka arbetslösheten ingick Kunskapslyftet som var en femårig sats-ning på vuxenutbildning. Kunskapslyftet startade den 1 juli 1997 och pågick till och med år 2002.Det fanns två övergripande målsättningar med Kunskapslyftet. Den första var ekonomisk och handlade om att minska arbetslösheten, öka sysselsättningen och få till stånd en snabbare ekonomisk tillväxt. Den andra målsättningen var utbildningspolitisk och handlade om att vidareutveckla och förnya vuxenutbildningen.Under den femårsperiod som Kunskapslyftet pågick uppgick statens kostnader tillcirka tre miljarder kronor per år exklusive studiestöd. Totalkostnader för hela projektetinklusive studiestöd hamnade på, i storleksordningen 40–45 miljarder kronor.På ITPS uppdrag har Institutionen för nationalekonomi vid Umeå universitetutvärderat hur Kunskapslyftet och annan kommunal vuxenutbildning påverkatdeltagarnas inkomster, rörlighet och övergång till högskolestudier.De fyra uppsatserna som sammanfattas i denna rapport bygger på deltagare i Komvuxhöstterminen 1997, i vissa fall deltagare med så kallat särskilt utbildningsbidrag(studerande i Kunskapslyftet). I de uppsatser där ett förfarande med jämförelsegrupperanvänds är dessa öppet arbetslösa i början av hösten 1997 och deltagare iarbetsmarknadsutbildning i mitten av denna höst.Den databas som har använts i projektets fyra delstudier har byggts upp vidinstitutionen för nationalekonomi vid Umeå universitet. Den omfattar samtliga stu-derande i Komvux höstterminerna 1997 t o m 1999 med tillhörande jämförelsegrupper.Jämförelsegruppen arbetslösa omfattar samtliga personer som 1 september 1997var anmälda vid arbetsförmedlingen som öppet arbetslösa. Den andra jämförelse-gruppen – deltagare i arbetsmarknadsutbildning – består av dem som den 15 okto-ber samma år var registrerade som deltagare i denna utbildning.De viktigaste resultaten i projektets fyra delstudier av kommunal vuxenutbildningär i korthet följande:1. När det gäller utbildningens effekter på bruttoarbetsinkomster efter avslutad utbildning finner vi att deltagare i Kunskapslyftet som var arbetslösa och studerade med det särskilda utbildningsbidraget hade en relativt sett gynnsammare inkomstutveckling än jämförelsegruppen öppet arbetslösa. Vi fin-ner dock en ännu bättre inkomstutveckling för deltagare i arbetsmarknadsutbildning.2. Övergång till högre utbildning var högre bland deltagare i Kunskapslyftet jämfört med övriga deltagare i kommunal vuxenutbildning när hänsyn tas till regionala arbetsmarknadsförhållanden och andra bakgrundsfaktorer.Kvinnliga studerande inom kommunal vuxenutbildning hade en relativt sett högre sannolikhet för att övergå till högskole- eller universitetsutbildning jämfört med män. Övergångssannolikheten påverkas också av regionala attribut. Den är bland annat negativt korrelerad med regional sysselsättningstillväxt och positivt korrelerad med regional arbetslöshet. Detsenare behöver dock inte nödvändigtvis tyda på negativa samhällsekonomiska effekter i form av inlåsning av arbetskraft.3. Det finns betydande regionala skillnader när det gäller deltagarnas inkomster efter utbildning. De länsvisa skillnaderna är inte obetydliga och kan överstiga 20 procent av genomsnittsinkomsten. Detta bör kanske beaktasvid den regionala fördelningen av resurser till vuxenutbildningen.4. När det gäller geografisk rörlighet finner vi lägre sannolikhet för flyttning bland deltagare i kommunal vuxenutbildning och deltagare i arbetsmarknadsutbildning jämfört med personer i öppen arbetslöshet. Detta gäller även de deltagare i Komvux som deltog i Kunskapslyftet. Jämfört med deltagare i arbetsmarknadsutbildning hade dock studerande inom Komvux högre sannolikhet för flyttning. Dock gäller detta inte deltagare i kunskapslyftet, vilka hade lägre sannolikhet för flyttning i jämförelse med deltagare i arbetsmarknadsutbildning.
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| 6. |
- de Luna, Xavier, 1968-, et al.
(författare)
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Can adult education delay retirement from the Labour Market?
- 2008
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Several studies have suggested that education is associated with later retirement from the labour market. In this paper, we examine whether adult education, involving enrolees aged 42 or above, delays retirement to potentially increase labour force participation among the elderly. With Swedish register data of transcripts from adult education and an-nual earnings, which encompasses 1979-2004 and 1982-2004 respectively, we exploit the fact that adult education is a large-scale phenomenon in Sweden and construct a measure of the timing of the transition from being self-supported by productive work to being supported by pension transfers. We match samples of treated and controls on the propen-sity score and use non-parametric estimation of survival rates. The results indicate that adult education has no effect on the timing of the retirement from the labour force. This can be contrasted with the fact that adult education is one of the cornerstones of the OECD strategy for “active ageing” and the European Union’s “Lisbon strategy” for growth and jobs.
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| 7. |
- Hall, J. O., et al.
(författare)
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Formation of lower-hybrid solitary structures by modulational interaction between lower-hybrid and dispersive Alfven waves
- 2009
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Ingår i: Annales Geophysicae. - : Copernicus GmbH. - 0992-7689 .- 1432-0576. ; 27:3, s. 1027-1033
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Tidskriftsartikel (refereegranskat)abstract
- We investigate the possibility that lower-hybrid solitary structures (LHSS), which are frequently observed in the Earth's ionosphere and magnetosphere, are formed as a result of a modulational interaction between lower-hybrid and dispersive Alfven waves of initially small amplitude. A large amplitude lower-hybrid pump wave can excite density structures with length scales transverse to the geomagnetic field of the order of the ion gyroradius via a modulational instability. The structure formation in the nonlinear stage of the instability is investigated by numerical solutions of the governing equations, using plasma parameters relevant for LHSS observations in the upper ionosphere and in the magnetosphere. The numerical solutions reveal that the lower-hybrid waves become self-localized inside cylindrically symmetric (with respect to the ambient magnetic field) density cavities, in qualitative agreement with observations. Our model includes thermal electron effects but shows no stabilization at the ion sound gyroradius, suggesting that any preference of observed LHSS for that perpendicular scale likely is due to processes arresting the cavity collapse.
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| 8. |
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| 9. |
- Melander, Arne, 1948-, et al.
(författare)
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Sheet metal forming of ultra high strength steels
- 2009
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Ingår i: Proceedings of The International 3’rd Swedish Production Symposium, SPS’09. - Göteborg. ; , s. 342-347, s. 342-347
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Konferensbidrag (refereegranskat)
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| 10. |
- Nilsson, Mikael, et al.
(författare)
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Glycemia and insulinemia in healthy subjects after lactose-equivalent meals of milk and other food proteins: the role of plasma amino acids and incretins1,2,3
- 2004
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Ingår i: American Journal of Clinical Nutrition. - 1938-3207. ; 80:5, s. 1246-1253
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Tidskriftsartikel (refereegranskat)abstract
- Background: Milk products deviate from other carbohydrate-containing foods in that they produce high insulin responses, despite their low GI. The insulinotropic mechanism of milk has not been elucidated. Objective: The objective was to evaluate the effect of common dietary sources of animal or vegetable proteins on concentrations of postprandial blood glucose, insulin, amino acids, and incretin hormones [glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide 1] in healthy subjects. Design: Twelve healthy volunteers were served test meals consisting of reconstituted milk, cheese, whey, cod, and wheat gluten with equivalent amounts of lactose. An equicarbohydrate load of white-wheat bread was used as a reference meal. Results: A correlation was found between postprandial insulin responses and early increments in plasma amino acids; the strongest correlations were seen for leucine, valine, lysine, and isoleucine. A correlation was also obtained between responses of insulin and GIP concentrations. Reconstituted milk powder and whey had substantially lower postprandial glucose areas under the curve (AUCs) than did the bread reference (–62% and –57%, respectively). Whey meal was accompanied by higher AUCs for insulin (90%) and GIP (54%). Conclusions: It can be concluded that food proteins differ in their capacity to stimulate insulin release, possibly by differently affecting the early release of incretin hormones and insulinotropic amino acids. Milk proteins have insulinotropic properties; the whey fraction contains the predominating insulin secretagogue.
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