| 1. |
- Bergström, Helena, 1971-, et al.
(författare)
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"Jag är inte diktator, jag är också mamma" : om föräldrastöd och föräldraansvar kring barns fetma och övervikt
- 2012
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Ingår i: Barn. - Trondheim : NAVF's Senter for Barneforskning. - 0800-1669 .- 2535-5449. ; 30:4, s. 41-57
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Tidskriftsartikel (refereegranskat)abstract
- I Sverige liksom i många andra länder har barns övervikt och fetma ökat. Ett sätt att motverka denna problematik är stöd riktat till föräldrar. Föräldrar anses ha en central betydelse för barns matvanor och fysiska aktivitet och stöd och råd till föräldrar poängterar gränssättning, uppmuntran och att föräldern ska fungera som en förebild för barnet. Genom intervjuer med föräldrar till barn med övervikt/fetma visar denna artikel hur föräldrar hanterar råd och anvisningar i sitt dagliga liv. Det visar sig att föräldrarna står inför ett komplext dilemma som innebär att de beaktar såväl fysisk som psykisk hälsa samt den vardagliga förhandlingen mellan föräldrar och barn. Sett ur ett omsorgsetiskt perspektiv utmanas idén om en rationell förälder som handlar i enlighet med kunskaper om vad som är en hälsosam livsstil. Föräldraskap innebär mycket mer än att kontrollera barnets vikt och sätta gränser.
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| 2. |
- Bergström, Hans, et al.
(författare)
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Wind power in cold climates : Ice mapping methods
- 2013
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- In the Vindforsk V-313 project “Vindkraft i kallt klimat” the goal was to arrive at a methodology to construct a high resolution (1x1 km2) climatology of icing on wind power turbines. This is a very demanding task since observations of icing on instruments have only been routinely available in Sweden during three winter seasons and at a dozen locations. The term climatology in classical meteorology means statistics over 30 years of data, and usually in the form of direct or indirect measurements. Examples are mean temperatures (annual, monthly, maximum etc.), number of frost days, growing season, variability, number of days of precipitation, mean winds, cloudiness, solar radiation, to name a few.In the project researchers from Uppsala University, WeatherTech Scandinavia, and SMHI have been collaborating. Observations have been analysed and state-of-the-art numerical weather prediction models have been applied in case studies and tested in several sensitivity studies. Extensive model verification has been carried out. Modelled ice load and estimated production losses were also compared to measurements. The question of how to arrive at a method using only a few years to represent the long-term climatology was addressed and several methods were tested.The project has shed light on the uncertainties in modelling ice load and icing climate. The end results not only depend on which mesoscale model that is used but also on how the model is set up. In order to improve the models more accurate measurements of ice load is needed. Observations of liquid cloud water content and droplet size distributions could also be of significant value to better understand why the ice load models fail in capturing the observed ice load.
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| 3. |
- Bergström, Petra, et al.
(författare)
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Association of NFE2L2 and KEAP1 haplotypes with amyotrophic lateral sclerosis.
- 2014
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Ingår i: Amyotrophic lateral sclerosis & frontotemporal degeneration. - : Informa UK Limited. - 2167-9223 .- 2167-8421. ; 15:1-2, s. 130-137
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Tidskriftsartikel (refereegranskat)abstract
- Amyotrophic lateral sclerosis (ALS) is a degenerative motor neuron syndrome influenced by oxidative stress. The transcription factor Nrf2 and its repressor Keap1 constitute an important defence system in cellular protection against oxidative stress. Here we hypothesize that common genetic variations in the genes NFE2L2 and KEAP1, encoding Nrf2 and Keap1, may influence the risk and phenotype of ALS. Five hundred and twenty-two Swedish patients with sporadic ALS (SALS) and 564 Swedish control subjects were studied. Eight tag SNPs in NFE2L2 and three tag SNPs in KEAP1 were genotyped by allelic discrimination and three functional NFE2L2 promoter SNPs were genotyped by sequencing. One NFE2L2 haplotype (GGGAC) was associated with decreased risk of SALS (OR = 0.62 per allele, p = 0.003) and one haplotype in KEAP1 (CGG) was associated with later SALS onset (+3.4 years per allele, p = 0.015). When stratified by subgroup, one haplotype in NFE2L2, GAGCAGA including three functional promoter SNPs associated with high Nrf2 protein expression, was associated with 4.0 years later disease onset per allele in subgroup ALS (p = 0.008). In conclusion, these results suggest that variations in NFE2L2 and KEAP1, encoding two central proteins in cellular oxidative stress defence, may influence SALS pathogenesis.
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| 4. |
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| 5. |
- Berntsson, Matilda, 1968, et al.
(författare)
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Viral and bacterial aetiologies of male urethritis: findings of a high prevalence of Epstein-Barr virus
- 2010
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Ingår i: International Journal of STD & AIDS. - 0956-4624. ; 21:3, s. 191-194
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Tidskriftsartikel (refereegranskat)abstract
- Male urethritis is one of the most common sexually transmitted infections (STIs). However, the aetiology is still unclear in many cases. In this study the prevalences of Epstein-Barr virus (EBV), herpes simplex virus type 1 (HSV-1), HSV-2, cytomegalovirus (CMV), adenovirus, Chlamydia trachomatis, Mycoplasma genitalium and Ureaplasma urealyticum (including subtyping) were investigated. Samples from 112 male STI attendants with microscopically verified urethritis and from a control group of 103 men without clinical or microscopic signs of urethritis were analysed. Prevalences in the urethritis group compared with the controls were as follows: EBV 21%, 6% (P < 0.01); C. trachomatis 15%, 3% (P < 0.01); M. genitalium 6%, 1% (P = 0.067) and U. urealyticum 10%, 10% (ns). The results for HSV-1, HSV-2, CMV and adenovirus were negative in patients, and therefore not analysed in the controls. EBV was shown to be an independent predictor of urethritis and may play a role in its pathogenesis.
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| 6. |
- Blom, Victoria, et al.
(författare)
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Work-Home Interference and Burnout A Study Based on Swedish Twins
- 2014
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Ingår i: Journal of Occupational and Environmental Medicine. - : Lippincott Williams & Wilkins. - 1076-2752 .- 1536-5948. ; 56:4, s. 361-366
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Tidskriftsartikel (refereegranskat)abstract
- Objective: This study sets out to investigate the impact of work-home interference on burnout in women and men, while taking genetic and family environmental factors into account.Methods: A total of 4446 Swedish twins were included in the study. The effects of work-home conflict (WHC) and home-work conflict (HWC) on burnout between and within pairs were analyzed with co-twin control analyses.Results: Both WHC and HWC were significantly associated with burnout. Genetic factors may be involved in the association between HWC and burnout in women. Familial factors were not involved for WHC and burnout, neither for women nor for men.Conclusions: This study shows the importance to encounter WHC per se to prevent burnout. Because of genetic confounding in HWC and burnout in women, preventive efforts may also take into account individual characteristics.
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| 7. |
- Blom, Victoria, et al.
(författare)
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Work–home interference and burnout in Swedish women and men : The importance of genetics and family environment
- 2013
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Genetic influences on perceived demands and burnout are shown in previous studies, suggesting genetic and shared environmental influences may underlie the associations between work–home interference and burnout. The present study sets out to increase the currently limited understanding of the biological and social correlates of work–home interference (WHI) by investigating whether WHI is related to burnout while taking sex, age, children, and genetic and shared environmental factors into account. A total of 13 730 individuals, including 2223 complete twin pairs, from the Swedish Twin Registry were included in the study. The effects of work–home conflict (WHC) and home–work conflict (HWC) on burnout between- and within-pairs were analyzed with Linear Mixed Models with and without stratification by sex. The results showed significant main effects of WHC and HWC on burnout and co-twin control analyses suggested that shared environmental factors may be involved in the association between HWC and burnout in women. As regards WHC and burnout, genetic or shared environmental factors did not seem to be involved. Adjustment for age and children did not change the results. The present study contributes with new knowledge of the mechanisms involved in the associations between work–home interference and burnout.
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| 8. |
- Bodvik, Rasmus, et al.
(författare)
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Aggregation and network formation of aqueous methylcellulose and hydroxypropylmethylcellulose solutions.
- 2010
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Ingår i: Colloids and Surfaces A. - : Elsevier. - 0927-7757 .- 1873-4359. ; 354:1-3, s. 162-171
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Tidskriftsartikel (refereegranskat)abstract
- Solution properties of methylcellulose (MC) and hydroxypropylmethylcellulose (HPMC) have been investigated as a function of temperature and concentration using a broad range of experimental techniques. Novelties include the extensive comparison between MC and HPMC solutions as well as the combination of techniques, and the use of Cryo transmission electron microscopy (Cryo-TEM). The correlation between rheology and light scattering results clearly demonstrates the relation between viscosity change and aggregation. Cryo-TEM images show the network structures formed. Viscosity measurements show that for both MC and HPMC solutions sudden changes in viscosity occur as the temperature is increased. The onset temperature for these changes depends on polymer concentration and heating rate. For both MC and HPMC solutions the viscosity on cooling is very different compared to on heating, demonstrating the slow equilibration time. The viscosity changes in MC and HPMC solutions are dramatically different; for MC solutions the viscosity increases by several orders of magnitude when a critical temperature is reached, whereas for HPMC solutions the viscosity decreases abruptly at a given temperature, followed by an increase upon further heating. Light and (SAXS) small-angle X-ray scattering shows that the increase in viscosity, for MC as well as for HPMC solutions, is due to extensive aggregation of the polymers. Light scattering also provides information on aggregation kinetics. The SAXS measurements allow us to correlate aggregation hysteresis to the viscosity hysteresis, as well as to extract some structural information. Cryo-TEM images give novel information that a fibrillar network is formed in MC solutions, and the strong viscosity increase occurs when this network spans the whole solution volume. For HPMC solutions the behaviour is more complex. The decrease in viscosity can be related to the formation of compact objects, and the subsequent increase to formation of fibrillar structures, which are more linear and less entangled than for MC.
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| 9. |
- Fransson, Emma, 1973-, et al.
(författare)
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Exploring salivary cortisol and recurrent pain in mid-adolescents living in two homes
- 2014
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Ingår i: BMC Psychology. - : Springer Science and Business Media LLC. - 2050-7283. ; 21:1
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Each year, around 50.000 children in Sweden experience a separation between their parents. Joint physical custody (JPC), where the child alternates homes between the parents for about equal amount of time, has become a common living arrangement after parental separation. Children in two homes could benefit from everyday contact with both parents and access to both parents' financial resources. However, children could experience stress from being constantly moving and potentially exposed to parental conflicts. Still, studies on JPC and biological functioning related to stress, are lacking. The aim of this study was to investigate how living arrangements (intact family/JPC) relate to HPA-axis activity and recurrent pain in mid-adolescents.METHODS: Mid-adolescents (106 girls and 51 boys) provided demographic details, self-reports of recurrent pain (headache, stomachache, neck/shoulder and back pain) and salivary samples. Salivary cortisol samples were collected: 1) immediately at awakening, 2) +30 minutes, 3) +60 minutes, and 4) at 8 p.m. The cortisol awakening response (CAR) was computed using an established formula. Additionally, the diurnal decline between the waking and 8 p.m. samples was computed.RESULTS: Hierarchical multiple regressions showed that living arrangements (intact family/JPC) was not associated with morning cortisol (CAR), the diurnal cortisol decline or with recurrent pain. However, sex was a significant predictor of both cortisol measures and recurrent pain with girls exhibiting a higher cortisol awakening response and a greater diurnal decline value as well as reporting more recurrent pain than did boys.CONCLUSIONS: Living arrangements were not associated with HPA-axis activity or recurrent pain in this group of well-functioning mid-adolescents. Although this study is the first to investigate how living arrangements relate to HPA-axis functioning and additional studies are needed, the tentative findings suggest that these mid-adolescents have adapted to their living arrangements and that other factors play a more pertinent role for HPA-functioning and subjective health.
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| 10. |
- Fransson, Emma, et al.
(författare)
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Exploring salivary cortisol and recurrent pain in mid-adolescents living in two homes
- 2014
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Ingår i: International Journal of Behavioral Medicine. - : Springer Science and Business Media LLC. - 1070-5503 .- 1532-7558. ; 21, s. S23-S23
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Tidskriftsartikel (refereegranskat)abstract
- Introduction: Every year, around 50.000 children in Sweden experience a separation between their parents. Joint physical custody (JPC), where the child alternates homes between the parents for about equal amount of time, has become a common living arrangement after parental separation. Children living in two homes can benefit from everyday contact with both parents and access to both parents’ financial resources. However, children can also experience stress from constantly moving and from exposure to any parental conflict. Yet, research on JPC and stress-related biological functioning is limited. The aimof this study was to investigate how living arrangements (intact family/JPC) relate toHPA-axis activity and recurrent pain in mid-adolescents. Methods: Mid-adolescents (106 girls and 51 boys) provided demographic details, self-reports of recurrent pain (headache, stomachache, neck/shoulder and back pain) and salivary samples. Salivary cortisol samples were collected: 1) immediately at awakening, 2) +30 minutes, 3) +60 minutes, and 4) at 8 p.m. Results: Hierarchical regressions showed that living arrangements did not predict morning cortisol levels, the diurnal cortisol rhythm nor recurrent pain. However, sex was significantly associated with both morning cortisol and recurrent pain. Conclusion: Living arrangements were not linked to HPA-axis activity or recurrent pain in this group of well-functioning mid-adolescents. Although this is the first study investigating how living arrangements relate to HPA-axis functioning, which means that additional research is needed, the findings suggest that these mid-adolescents have adapted to their living arrangements and that other factors seem more pertinent for HPA-functioning and subjective health complaints.
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