| 1. |
- Halldén, Gunilla, et al.
(författare)
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Omsorgsbegreppet i förskolan : Olika infallsvinklar på ett begrepp och dess relation till en verksamhet. Rapport från nätverk för barnomsorgsforskning, Göteborg 20-21 novemberg 2000
- 2001
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Denna rapport innehåller texter som presenterats vid en konferens arrangerad inom ramen för Nätverk för barnomsorgsforskningi . Syftet med konferensen var att lyfta upp begreppet omsorg, diskutera dess innebörd, rädda det från retorisk förflackning och samtidigt via dess koppling till verksamheter belysa ett vidare sammanhang. När bamforskning diskuteras har jag på senare tid funnit det väsentligt att peka på att den har en kapacitet att kasta ljus över centrala samhällsfrågor. Forskning om barn bör inte bara vara en forskning om en viss grupp i samhället. Den nyare bamdomsforskningen söker tillämpa ett bamperspektiv. Detta innebär att fenomen studeras såsom de framstår från barnens perspektiv och att inverkan av olika sociala reformer, politiska förändringar och produktion av varor på barns liv belyses. Det handlar alltså både om att söka efter barnens perspektiv och att söka efter konsekvenserna för barnen av olika samhälleliga förändringar. Nya fålt som t.ex. barndomshistoria, barndomssociologi och barndomsantropologi har uppstått och begreppet generation har införts för att markera vikten av att anlägga ett generationsperspektiv på frågor som vanligtvis grupperats på annat sätt.
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| 2. |
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| 3. |
- Söderström, Torbjörn, et al.
(författare)
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5alfa-reductase 2 polymorphisms as risk factors in prostate cancer
- 2002
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Ingår i: Pharmacogenetics. - : Ovid Technologies (Wolters Kluwer Health). - 0960-314X .- 1473-561X. ; 12:4, s. 307-12
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Tidskriftsartikel (refereegranskat)abstract
- Prostate cancer is a significant cause of death in Western countries and is under the strong influence of androgens. The steroid 5alpha-reductase 2 catalyzes the metabolism of testosterone into the more potent androgen dihydrotestosterone in the prostate gland. The enzyme is a target in pharmacological treatment of benign prostatic hyperplasia using specific inhibitors such as finasteride. Makridakis et al. have characterized the V89L and A49T polymorphisms in recombinant expression systems. The L allelic variant has a lower Vmax/Km ratio than the V variant. In the A49T polymorphism, the T variant has an increased Vmax/Km ratio. We performed a population-based case-control study of the impact of the SRD5A2 V89L and A49T polymorphisms on the risk of prostate cancer. We also studied the relation between the genotypes and age at diagnosis, tumor, node, metastasis stage, differentiation grade, prostate specific antigen and heredity. The study included 175 prostate cancer patients and 159 healthy controls that were matched for age. There was an association with SRD5A2 V89L LL genotype and metastases at the time of diagnosis, OR 5.67 (95% CI 1.44-22.30) when adjusted for age, differentiation grade, T-stage and prostate specific antigen. Heterozygous prostate cancer cases that carried the SRD5A2 A49T AT genotype were significantly younger than cases that carried the AA genotype, (mean age 66 years vs 71, P = 0.038). The SRD5A2 V89L and A49T polymorphisms were, however, not associated with altered prostate cancer risk. Further studies of the V89L polymorphism may lead to better understanding of the etiology of prostate cancer metastases.
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| 4. |
- Westman, Jeanette, et al.
(författare)
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The influences of place of birth and socioeconomic factors on attempted suicide in a defined population of 4.5 million people.
- 2003
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Ingår i: Archives of general psychiatry. - : American Medical Association (AMA). - 0003-990X. ; 60:4, s. 409-14
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Our knowledge of the influence of place of birth and socioeconomic status on attempted suicide in a defined national population is limited. METHODS: The study population at baseline in 1993 included approximately 4.5 million Swedish persons aged 25 to 64 years, of whom 570 000 had been born abroad. Each individual was tracked until attempted suicide, remigration, death, or the end of the study on December 31, 1998. The Cox regression was used in the analysis. RESULTS: Labor migrants from Finland and other OECD (Organisation for Economic Cooperation and Development) countries and refugees from Poland and Iran had higher hazard ratios of attempted suicide than Swedish-born control subjects. Women born in Latin America, Asia, and Eastern Europe had significantly higher hazard ratios of attempted suicide than Swedish-born women. In contrast, men born in southern Europe and Asia had significantly lower hazard ratios of attempted suicide. The hazard ratios of attempted suicide among women from Iran, Asia, southern Europe, Latin America, and eastern Europe considerably exceeded those of men from the same country of origin. When socioeconomic status was included in the final model, the hazard ratios remained high for women, while the risk of attempted suicide among men declined sharply with increased income. CONCLUSIONS: Place of birth, socioeconomic status, and sex are associated with attempted suicide. Socioeconomic status explains only part of the association between place of birth and attempted suicide.
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| 6. |
- Andersson, Gunnel, 1958-, et al.
(författare)
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Urinary incontinence prevalence, impact on daily living and desire for treatmentt : a population-based study
- 2004
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Ingår i: Scandinavian journal of urology and nephrology. - : Taylor & Francis. - 0036-5599 .- 1651-2065. ; 38:2, s. 125-130
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE:To investigate the prevalence of urinary incontinence in a representative population in Sweden, and to assess to what extent the condition affects daily life and to what degree those afflicted desire treatment.MATERIAL AND METHODS:In a population-based study, a postal questionnaire comprising 12 questions on urinary incontinence was sent to a representative sample of 15 360 randomly selected residents (aged 18-79 years) of Orebro County, Sweden. This was a supplement to a comprehensive survey of public health and general living conditions.RESULTS:The response rate was 64.5%. The prevalence of urinary incontinence was 19% when defined as "any leakage" and 7% when defined as "at least once a week". Women were more afflicted than men, and the proportion of people with urinary incontinence increased markedly with increasing age. Most considered their problems to be minor, having little impact on daily life, which was reflected by the fact that only 18% of those with urinary incontinence desired treatment. About 17% of those with urinary incontinence reported severe problems that interfered with daily life. Of respondents with severe problems, 42% did not want treatment.CONCLUSION:According to this population-based study, urinary incontinence is not a major problem for most people in the community. Although a considerable proportion of the population report urinary incontinence, the majority experience minor problems and only 18% desire treatment. For a limited group of people, urinary incontinence is a severe problem. It is important that healthcare resources are optimized to identify and meet the needs of those who are most afflicted.
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| 7. |
- Andersson, Jan-Erik, et al.
(författare)
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Robot control for wood carving operations
- 2001
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Ingår i: Mechatronics (Oxford). - 0957-4158 .- 1873-4006. ; 11:4, s. 475-490
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this paper is to implement sensor control in wood carving operations. The introduction of wood carving is a step towards the development of a new manufacturing method for the wood manufacturing industry, where wood carving would facilitate increased freedom of the design choice. A control method that improves robot control and supports simpler programming, based on using an industrial robot equipped with a wrist mounted force/torque-sensor. is proposed for the wood carving process. This paper describes the structure and control algorithm of the system and how different machining parameters affect the cutting forces. The evaluation of the system showed that it is possible to control the cutting depth at speeds up to 7.5 mms by adjusting the rake angle of the tool to obtain a nominal force.
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| 8. |
- Asteman, Henrik, 1973, et al.
(författare)
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Effect of water-vapor-induced Cr vaporization on the oxidation of austenitic stainless steels at 700 and 900 degrees C - Influence of Cr/Fe ratio in alloy and Ce additions
- 2004
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Ingår i: Journal of the Electrochemical Society. - : The Electrochemical Society. - 1945-7111 .- 0013-4651. ; 151:3, s. B141-B150
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Tidskriftsartikel (refereegranskat)abstract
- The oxidation of 153MA, 310 and 353MA austenitic stainless steels was investigated at 700°C and 310 and 353MA at 900°C in O 2 and in O 2 + 40% H 2 O. 153MA was not studied at 900°C because it suffered excessive corrosion. The influence of gas velocity was studied. The oxidized samples were investigated by grazing angle X-ray diffraction, scanning electron microscopy/energy dispersive analysis by X-rays Auger-electron spectroscopy, and glow discharge optical emission spectroscopy. In the presence of water vapor, gas velocity strongly influenced oxidation. This effect is attributed to chromium evaporation in the form of CrO 2 (OH) 2 . Exposure in O 2 + 40% H 2 O at 700°C using high flow rates caused breakaway corrosion on all alloys. At 900°C, only the 310 and 353MA alloys were investigated. In O 2 + H 2 O environment, both alloys showed a mass loss at low flow rates due to chromium evaporation. At high flow rates, alloy 310 suffered breakaway corrosion while 353MA did not. The corrosion products consisted of a relatively thin Cr-rich (Cr,Fe) 2 O 3 oxide plus thick, iron-rich oxide islands. The greater corrosion resistance of 310 and 353MA steels in environments where chromium evaporation is a factor is attributed to the high Cr/Fe ratio. In contrast, the presence of Ce and Si in the MA grade steels appears to have little beneficial effect on breakaway corrosion triggered by Cr evaporation. © 2004 The Electrochemical Society. All rights reserved.
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| 9. |
- Blücher, D. Bengtsson, et al.
(författare)
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Scanning kelvin probe force microscopy - A useful tool for studying atmospheric corrosion of MgAl alloys in situ
- 2004
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Ingår i: JOURNAL OF THE ELECTROCHEMICAL SOCIETY. - : The Electrochemical Society. - 0013-4651 .- 1945-7111. ; 151:12
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Tidskriftsartikel (refereegranskat)abstract
- Scanning Kelvin probe force microscopy (SKPFM) is used to study the initial stages of atmospheric corrosion of an AlMg alloy and of physical vapor deposition (PVD) deposited 2 μm Al dots on pure Mg. The latter system is used as a model of a two-phase AlMg alloy. The influence of CO2 was studied in situ in humid air using SKPFM. This method allows for the in situ investigation of the evolution of the Volta potential during exposure, the resolution being in the submicrometer range. The temperature was 22.0°C, and the relative humidity was 85 or 95%. The concentration of CO2 was <1 or 350 ppm. The corrosion products were analyzed by gravimetry, ion chromatography, X-ray diffraction, scanning electron microscopy, scanning Kelvin probe, and Auger electron spectroscopy. We found that the initial stages of atmospheric corrosion on magnesium are influenced by the presence of cathodic PVD-deposited aluminum. A similar effect was seen in the case of AZ91D, the aluminum-rich β-phase forming the cathodic areas. The β-phase is nobler compared to the substrate because of the higher Al content. In the absence of CO2, the corrosion attack is localized in nature whereas the presence of ambient levels of CO2 results in a more general corrosion attack. The inhibitive effect of CO2 on the atmospheric corrosion of AZ91D is explained by the formation of a passivating layer of Mg5(CO3)4(OH)2⋅5H2O. In the absence of CO2, the increase in pH originating from the cathodic reaction results in the dissolution of aluminum in the passive layer. A corrosion mechanism is proposed explaining the behavior in the two environments.
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