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- Johansson, Håkan, 1979, et al.
(författare)
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Application-Specific Error Control in Inverse Identification
- 2008
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Ingår i: 8th World Concress on Computational Mechanics WCCM8, 5th European Congress on Computational Methods in Applied Sciences and Engineering ECCOMAS 2008 (Edited by B.A. Schrefler and U. Perego). - 9788496736559 ; :CD, s. 1p abstract-
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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- Johansson, Sanne, et al.
(författare)
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Why do we often get biological growth on thin rendering on thermal insulation constructions?
- 2008
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Ingår i: Proceedings of the 8th Symposium on Building Physics in the Nordic Contries. - 9788778772657 ; 2, s. 919-926
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Konferensbidrag (refereegranskat)abstract
- If one takes a closer look at almost any building facade one will find biological growth. Although this can be seen as an integral part of an antique building, for modern buildings it is in most cases seen as an aesthetical problem. All building facades will most likely be discolored by biological growth by time, but in Sweden we have had many cases of newly built rendered facades that have been discolored much more rapidly than usual. The problem is believed to occur mainly on thin rendering applied on thermal insulation -which is a common building facade construction in Sweden -but apart from this, it is difficult to find clear indications of which facades that will be affected. As it is well known that different biological organisms has different requirements in physical factors (especially temperature and relative humidity) for germination and growth on any substrate, it is important to define which conditions the organisms needs to grow on a building fasade. We have studied the temperature and relative humidity conditions on the surfaces of different rendered facade constructions. We find that the surface temperature on a facade of thin rendering on thermal insulation drops quickly during nights, as these constructions have low heat capacity in the rendering layer. This leads to high relative humidity and even condensation, during clear nights. Other abiotic factors that seem also to influence the risk for growth are surface color and rendering structure. From the temperature and relative humidity measurements in this study, we aim at giving insight of the surface climate on a building façade in order to fully understand the rendered façade as a biological habitat.
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- Welin, Lennart, et al.
(författare)
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Prevalence of cardiovascular risk factors and the metabolic syndrome in middle-aged men and women in Gothenburg, Sweden
- 2008
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Ingår i: BMC Public Health. - : Springer Science and Business Media LLC. - 1471-2458. ; 8, s. 403-
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND Random samples of 50-year-old men living in Gothenburg have been examined every 10th year since 1963 with a focus on cardiovascular risk factors. The aims of the study were to acquire up-to-date information about risk factors in the fifth cohort of 50-year-old men and women, to re-examine those who were 50 years of age in 1993, and to analyse the prevalence of the metabolic syndrome (MetSyn) using different definitions. METHODS A random sample of men and women born in 1953 were examined in 2003-2004 for cardiovascular risk factors. Men born in 1943 and that participated in the examination in 1993 were also invited. Descriptive statistics were calculated. RESULTS The participation rate among men and women born in 1953 was 60 and 67% respectively. Among men born in 1943, the participation rate was 87%. The prevalence of obesity was from 15 to 17% (body mass index, BMI >or= 30) in the three samples. The prevalence of known diabetes was 4% among the 50-year-old men and 6% among the 60-year-old men, and 2% among the women. Increased fasting plasma glucose varied substantially from 4 to 33% depending on cut-off level and gender. Mean cholesterol was 5.4 to 5.5 mmol/l. Smoking was more common among women aged 50 (26%) than among men aged 50 (22%) and 60 years (15%). The prevalence of the MetSyn varied with the definition used: from 10 to 15.8% among the women, from 16.1 to 26% among 50-year-old men, and from 19.9 to 35% among the 60-year-old men. Only 5% of the men and women had no risk factors. CONCLUSION This study provides up-to-date information about the prevalence of cardiovascular risk factors and the MetSyn in middle-aged Swedish men and women. Different definitions of the MetSyn create confusion regarding which definition to use.
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