| 1. |
- Kirsebom, O. S., et al.
(författare)
-
Measurement of the 2+→0+ ground-state transition in the β decay of F 20
- 2019
-
Ingår i: Physical Review C. - 2469-9985. ; 100:6
-
Tidskriftsartikel (refereegranskat)abstract
- We report the first detection of the second-forbidden, nonunique, 2+→0+, ground-state transition in the β decay of F20. A low-energy, mass-separated F+20 beam produced at the IGISOL facility in Jyväskylä, Finland, was implanted in a thin carbon foil and the β spectrum measured using a magnetic transporter and a plastic-scintillator detector. The β-decay branching ratio inferred from the measurement is bβ=[0.41±0.08(stat)±0.07(sys)]×10-5 corresponding to logft=10.89(11), making this one of the strongest second-forbidden, nonunique β transitions ever measured. The experimental result is supported by shell-model calculations and has significant implications for the final evolution of stars that develop degenerate oxygen-neon cores. Using the new experimental data, we argue that the astrophysical electron-capture rate on Ne20 is now known to within better than 25% at the relevant temperatures and densities.
|
|
| 2. |
- Tai, F, et al.
(författare)
-
Abdominal Wall Miscellaneous
- 2015
-
Ingår i: Hernia : the journal of hernias and abdominal wall surgery. - 1248-9204. ; 19 Suppl 1, s. S5-S12
-
Tidskriftsartikel (refereegranskat)
|
|
| 3. |
- Baltrunaite, Audinga, 1985-
(författare)
-
Political Economics of Special Interests and Gender
- 2016
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Political Finance Reform and Public Procurement: Evidence from Lithuania. Can political donations buy influence? This paper studies whether firms trade political contributions for public procurement contracts. To answer this question, I focus on the Lithuanian political economy. Combining data on a large number of government tenders, the universe of corporate donors and firm characteristics, I examine how a ban on corporate donations affects the awarding of procurement contracts to companies that donated in the past. Consistent with political favoritism, contributing firms’ probability of winning goes down by five percentage points as compared to that of non-donor firms after the ban. Among different mechanisms, the hypothesis that corporate donors get confidential information on competing bids prevails. The empirical results are in line with predictions from a first-price sealed-bid auction model with one informed bidder. Evidence on firm bidding and victory margins suggests that contributing firms adjust their bids in order to secure contracts at a maximum revenue. I assess that tax payers save almost one percent of GDP thanks to the reform.Gender Quotas and the Quality of Politicians. We analyze the effects of the introduction of gender quotas in candidate lists on the quality of elected politicians, as measured by the average number of years of education. We consider an Italian law which introduced gender quotas in local elections in 1993, and was abolished in 1995. As not all municipalities went through elections during this period, we identify two groups of municipalities and use a difference-in-differences estimation. We find that gender quotas are associated with an increase in the quality of elected politicians, with the effect ranging from 0.12 to 0.24 years of education. This effect is due not only to the higher number of elected women, who are on average more educated than men, but also to the lower number of low-educated elected men. The positive effect on quality is confirmed when we measure the latter with alternative indicators, it persists in the long run and it is robust to controlling for political ideology and political competition.Affirmative Action and the Power of the Elderly. There is evidence that age matters in politics. In this article we study whether implementation of affirmative action policies on gender can generate additional effects on an alternative dimension of representation, namely, the age of politicians. We consider an Italian law which introduced gender quotas in candidate lists for local elections in 1993, and was abolished in 1995. As not all municipalities went through elections during this period, we can identify two groups of municipalities and use a difference-in-differences estimation to analyze the effect of gender quotas on the age of elected politicians. We find that gender quotas are associated with election of politicians that are younger by more than one year. The effect occurs mainly due to the reduction in age of elected male politicians and is consistent with the optimizing behavior of parties or of voters.Let the Voters Choose Women. Female under-representation in politics can be the result of parties' selection of candidates and/or of voters’ electoral preferences. To assess the impact of these two channels, we exploit the introduction of Italian Law 215/2013, which prescribes both gender quotas on candidate lists and double preference voting conditioned on gender. Using a regression discontinuity design, we estimate that the law increases the share of elected female politicians by 22 percentage points. The result is driven by the increase in preference votes cast for female candidates, suggesting a salient role of double preference voting in promoting female empowerment in politics.
|
|
| 4. |
- Barman, Malin, 1983, et al.
(författare)
-
Nutritional impact on Immunological maturation during Childhood in relation to the Environment (NICE): a prospective birth cohort in northern Sweden
- 2018
-
Ingår i: BMJ Open. - : BMJ. - 2044-6055 .- 2044-6055. ; 8:10
-
Tidskriftsartikel (refereegranskat)abstract
- © Author(s) (or their employer(s)) 2018. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ. INTRODUCTION: Prenatal and neonatal environmental factors, such as nutrition, microbes and toxicants, may affect health throughout life. Many diseases, such as allergy and impaired child development, may be programmed already in utero or during early infancy. Birth cohorts are important tools to study associations between early life exposure and disease risk. Here, we describe the study protocol of the prospective birth cohort, 'Nutritional impact on Immunological maturation during Childhood in relation to the Environment' (NICE). The primary aim of the NICE cohort is to clarify the effect of key environmental exposures-diet, microbes and environmental toxicants-during pregnancy and early childhood, on the maturation of the infant's immune system, including initiation of sensitisation and allergy as well as some secondary outcomes: infant growth, obesity, neurological development and oral health.METHODS AND ANALYSIS: The NICE cohort will recruit about 650 families during mid-pregnancy. The principal inclusion criterion will be planned birth at the Sunderby Hospital in the north of Sweden, during 2015-2018. Questionnaires data and biological samples will be collected at 10 time-points, from pregnancy until the children reach 4 years of age. Samples will be collected primarily from mothers and children, and from fathers. Biological samples include blood, urine, placenta, breast milk, meconium, faeces, saliva and hair. Information regarding allergic heredity, diet, socioeconomic status, lifestyle including smoking, siblings, pet ownership, etc will be collected using questionnaires. Sensitisation to common allergens will be assessed by skin prick testing and allergic disease will be diagnosed by a paediatrician at 1 and 4 years of age. At 4 years of age, the children will also be examined regarding growth, neurobehavioural and neurophysiological status and oral health.ETHICS AND DISSEMINATION: The NICE cohort has been approved by the Regional Ethical Review Board in Umeå, Sweden (2013/18-31M). Results will be disseminated through peer-reviewed journals and communicated on scientific conferences.
|
|
| 5. |
- Behtoui, Alireza, 1958-, et al.
(författare)
-
The social relations and educational expectations of young people in marginalised areas : Evidence from Sweden
- 2018
-
Ingår i: Comparative Perspectives on Early School Leaving in the European Union. - London : Routledge. - 9781351691819 - 9781138048072 ; , s. 102-116
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- A great deal of previous studies on early school leavers have concentrated on the individual characteristics of young people and neglecting the social relations that cause them to drop out. This chapter highlights the importance of and the way in which the social relations between young people with significant people in their immediate social environment, e.g. relationships with family members, the school staff and their friends, affect their educational expectations. In line with earlier research, we have assumed that the educational expectations of students are a crucial predicator of early school leaving (failure, frustration and, ultimately, disengagement and dropout), i.e. having fewer educational expectations predicts a higher risk of ESL. The data used in this study were collected in schools in marginalized urban areas of Sweden during the period 2014-2016 as a part of the RESL.eu project in Sweden. By using a mixed-methods approach with both survey material, in-depth interviews and participant observation in a selected group of schools, we have tried to highlight these complex relationships between social relations and educational expectations. As our results demonstrate, these relationships and the social capital they provide play an important role in forming the educational expectations of young people.
|
|
| 6. |
|
|
| 7. |
- Georgian, Samuel E., et al.
(författare)
-
Biogeographic variability in the physiological response of the cold-water coral Lophelia pertusa to ocean acidification
- 2016
-
Ingår i: Marine Ecology. - : Wiley. - 0173-9565 .- 1439-0485. ; 37:6, s. 1345-1359
-
Tidskriftsartikel (refereegranskat)abstract
- While ocean acidification is a global issue, the severity of ecosystem effects is likely to vary considerably at regional scales. The lack of understanding of how biogeographically separated populations will respond to acidification hampers our ability to predict the future of vital ecosystems. Cold-water corals are important drivers of biodiversity in ocean basins across the world and are considered one of the most vulnerable ecosystems to ocean acidification. We tested the short-term physiological response of the cold-water coral Lophelia pertusa to three pH treatments (pH = 7.9, 7.75 and 7.6) for Gulf of Mexico (USA) and Tisler Reef (Norway) populations, and found that reductions in seawater pH elicited contrasting responses. Gulf of Mexico corals exhibited reductions in net calcification, respiration and prey capture rates with decreasing pH. In contrast, Tisler Reef corals showed only slight reductions in net calcification rates under decreased pH conditions while significantly elevating respiration and capture rates. These differences are likely the result of environmental differences (depth, pH, food supply) between the two regions, invoking the potential for local adaptation or acclimatization to alter their response to global change. However, it is also possible that variations in the methodology used in the experiments contributed to the observed differences. Regardless, these results provide insights into the resilience of L. pertusa to ocean acidification as well as the potential influence of regional differences on the viability of species in future oceans.
|
|
| 8. |
- Grimsholm, Ola, 1979, et al.
(författare)
-
Absence of surrogate light chain results in spontaneous autoreactive germinal centres expanding V(H)81X-expressing B cells
- 2015
-
Ingår i: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 6
-
Tidskriftsartikel (refereegranskat)abstract
- Random recombination of antibody heavy- and light-chain genes results in a diverse B-cell receptor (BCR) repertoire including self-reactive BCRs. However, tolerance mechanisms that prevent the development of self-reactive B cells remain incompletely understood. The absence of the surrogate light chain, which assembles with antibody heavy chain forming a pre-BCR, leads to production of antinuclear antibodies (ANAs). Here we show that the naive follicular B-cell pool is enriched for cells expressing prototypic ANA heavy chains in these mice in a non-autoimmune background with a broad antibody repertoire. This results in the spontaneous formation of T-cell-dependent germinal centres that are enriched with B cells expressing prototypic ANA heavy chains. However, peripheral tolerance appears maintained by selection thresholds on cells entering the memory B-cell and plasma cell pools, as exemplified by the exclusion of cells expressing the intrinsically self-reactive V(H)81X from both pools.
|
|
| 9. |
- Jonkman, Nini H., et al.
(författare)
-
Do self-management interventions work in patients with heart failure? An individual patient data meta-analysis
- 2016
-
Ingår i: Circulation. - : Lippincott Williams & Wilkins. - 0009-7322 .- 1524-4539. ; 133:12, s. 1189-1198
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: -Self-management interventions are widely implemented in care for patients with heart failure (HF). Trials however show inconsistent results and whether specific patient groups respond differently is unknown. This individual patient data meta-analysis assessed the effectiveness of self-management interventions in HF patients and whether subgroups of patients respond differently.METHODS AND RESULTS: -Systematic literature search identified randomized trials of self-management interventions. Data of twenty studies, representing 5624 patients, were included and analyzed using mixed effects models and Cox proportional-hazard models including interaction terms. Self-management interventions reduced risk of time to the combined endpoint HF-related hospitalization or all-cause death (hazard ratio [HR], 0.80; 95% confidence interval [CI], 0.71-0.89), time to HF-related hospitalization (HR, 0.80; 95%CI, 0.69-0.92), and improved 12-month HF-related quality of life (standardized mean difference 0.15; 95%CI, 0.00-0.30). Subgroup analysis revealed a protective effect of self-management on number of HF-related hospital days in patients <65 years (mean number of days 0.70 days vs. 5.35 days; interaction p=0.03). Patients without depression did not show an effect of self-management on survival (HR for all-cause mortality, 0.86; 95%CI, 0.69-1.06), while in patients with moderate/severe depression self-management reduced survival (HR, 1.39; 95%CI, 1.06-1.83, interaction p=0.01).CONCLUSIONS: -This study shows that self-management interventions had a beneficial effect on time to HF-related hospitalization or all-cause death, HF-related hospitalization alone, and elicited a small increase in HF-related quality of life. The findings do not endorse limiting self-management interventions to subgroups of HF patients, but increased mortality in depressed patients warrants caution in applying self-management strategies in these patients.
|
|
| 10. |
- Jonkman, Nini H., et al.
(författare)
-
What Are Effective Program Characteristics of Self-Management Interventions in Patients With Heart Failure? : An Individual Patient Data Meta-analysis
- 2016
-
Ingår i: Journal of Cardiac Failure. - : Elsevier BV. - 1071-9164 .- 1532-8414. ; 22:11, s. 861-871
-
Tidskriftsartikel (refereegranskat)abstract
- Background To identify those characteristics of self-management interventions in patients with heart failure (HF) that are effective in influencing health-related quality of life, mortality, and hospitalizations.Methods and Results Randomized trials on self-management interventions conducted between January 1985 and June 2013 were identified and individual patient data were requested for meta-analysis. Generalized mixed effects models and Cox proportional hazard models including frailty terms were used to assess the relation between characteristics of interventions and health-related outcomes. Twenty randomized trials (5624 patients) were included. Longer intervention duration reduced mortality risk (hazard ratio 0.99, 95% confidence interval [CI] 0.97–0.999 per month increase in duration), risk of HF-related hospitalization (hazard ratio 0.98, 95% CI 0.96–0.99), and HF-related hospitalization at 6 months (risk ratio 0.96, 95% CI 0.92–0.995). Although results were not consistent across outcomes, interventions comprising standardized training of interventionists, peer contact, log keeping, or goal-setting skills appeared less effective than interventions without these characteristics.Conclusion No specific program characteristics were consistently associated with better effects of self-management interventions, but longer duration seemed to improve the effect of self-management interventions on several outcomes. Future research using factorial trial designs and process evaluations is needed to understand the working mechanism of specific program characteristics of self-management interventions in HF patients.
|
|
