| 1. |
- Bergsten, Ulrika, et al.
(författare)
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Patterns of background factors related to early RA patients' conceptions of the causes of their disease
- 2011
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Ingår i: Clinical Rheumatology. - 0770-3198. ; 30:3, s. 347-352
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Tidskriftsartikel (refereegranskat)abstract
- The aim of the present study was to identify patterns of background factors related to the early RA patients' conceptions of the cause of the disease. Conceptions from a qualitative study formed the basis for the stratification of 785 patients from the Swedish EIRA study answering a question about their own thoughts about the cause to RA. Logistic regression analyses were used to explore the associations between patients' conceptions and relevant background factors: sex, age, civil status, educational level, anti-cyclic citrullinated peptide antibody (anti-CCP) and smoking habits. The results were presented as odds ratios (OR) with 95% confidence intervals (CI). A conception of family-related strain was strongly associated with being young (OR 0.50; 95% CI 0.33-0.78 for age 58-70 vs. 17-46), female (OR 0.38; 95% CI 0.25-0.60 for male vs. female) and having a high level of education (OR 2.15; 95% CI 1.54-3.01 for university degree vs. no degree). A conception of being exposed to climate changes was associated with being male (OR 1.99; 95% CI 1.24-3.22 for male vs. female), having a low level of education (OR 0.33; 95% CI 0.18-0.58 for university degree vs. no degree) and positive Anti-CCP (OR 1.72; 95% CI 1.03-2.87 for positive vs. negative Anti-CCP). Linking patients' conceptions of the cause of their RA to background factors potentially could create new opportunities for understanding the complexity of the aetiology in RA. Furthermore, this information is important and relevant in the care of patients with early RA.
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| 2. |
- Borschel, Christian, et al.
(författare)
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A New Route toward Semiconductor Nanospintronics : Highly Mn-Doped GaAs Nanowires Realized by Ion-Implantation under Dynamic Annealing Conditions
- 2011
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Ingår i: Nano letters (Print). - Washington : American Chemical Society (ACS). - 1530-6984. ; 11:9, s. 3935-3940
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Tidskriftsartikel (refereegranskat)abstract
- We report on highly Mn-doped GaAs nanowires (NWs) of high crystalline quality fabricated by ion beam implantation, a technique that allows doping concentrations beyond the equilibrium solubility limit. We studied two approaches for the preparation of Mn-doped GaAs NWs: First, ion implantation at room temperature with subsequent annealing resulted in polycrystalline NWs and phase segregation of MnAs and GaAs. The second approach was ion implantation at elevated temperatures. In this case, the single-crystallinity of the GaAs NWs was maintained, and crystalline, highly Mn-doped GaAs NWs were obtained. The electrical resistance of such NWs dropped with increasing temperature (activation energy about 70 meV). Corresponding magnetoresistance measurements showed a decrease at low temperatures, indicating paramagnetism. Our findings suggest possibilities for future applications where dense arrays of GaMnAs nanowires may be used as a new kind of magnetic material system.
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| 3. |
- Eriksson, Jonnie
(författare)
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Aristoteles anomalier
- 2011
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Ingår i: Glänta. - Göteborg : Glänta. - 1104–5205. ; :1, s. 48-56
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Tidskriftsartikel (övrigt vetenskapligt)abstract
- While Aristotle has conventionally been perceived as a precursor for the taxonomy of modern biological systematics, such as that of Carolus Linnaeus, this essay investigates the relationship between Aristotelian metaphysics and natural history in order to demonstrate the problem of anomalies in any system of this kind. In particular, the problem involves the place that may be given to the unnatural (deviations form the norm of nature) in a system for nature – if there can be a taxonomy of anomalies (namely, a teratology), given the logic of Aristotelian philosophy.
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| 4. |
- Gabrielsson, Jonas, et al.
(författare)
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Career motives and entrepreneurial decision-making: examining preferences for causal and effectual logics in the early stage of new ventures
- 2011
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Ingår i: Small Business Economics. - Springer. - 0921-898X. ; 36:3, s. 281-298
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Tidskriftsartikel (refereegranskat)abstract
- The influence of entrepreneurs' career motives is examined on two alternative modes of decision-making logic; causation and effectuation. Based on Sarasvathy's (Acad Manage Rev 26(2):243-288, 2001) seminal study, causation is defined as a decision-making process that focuses on what ought to be done given predetermined goals and possible means, and effectuation as a decision-making process emphasizing the question of what can be done given possible means and imagined ends. Analysis suggests that entrepreneurs who identify themselves with linear or expert career motives have a higher preference for causal decision-making logic. Entrepreneurs who identify themselves with spiral or transitory career motives have a higher preference for effectual decision-making logic. In addition, indications that prior start-up experience moderates the relationship between career motives and effectual decision-making logic for spiral-minded entrepreneurs is found. The overall results give ample support for the assumption that entrepreneurs' career motives influence their decision-making.
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| 5. |
- Hubertsson, Jenny, et al.
(författare)
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Sickness absence in musculoskeletal disorders
- 2011
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Ingår i: BMC Public Health. - London : BioMed Central. - 1471-2458. ; 11:107
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Tidskriftsartikel (refereegranskat)abstract
- Background:Sickness absence has represented a growing public health problem in many Western countries over the last decade. In Sweden disorders of the musculoskeletal system cause approximately one third of all sick leave. The Social Insurance Agency (SIA) and the health care system are important actors in handling the sickness absence process. The objective was to study how patients with personal experience of sickness absence due to musculoskeletal disorders perceived their contact with these actors and what they considered as obstructing or facilitating factors for recovery and return to work in this situation.Methods:In-depth interviews using open-ended questions were conducted with fifteen informants (aged 33-63, 11 women), all with experience of sickness absence due to musculoskeletal disorders and purposefully recruited to represent various backgrounds as regards diagnosis, length of sick leave and return to work. The interviews were audio-recorded, transcribed verbatim and analysed using content analysis.Results:The informants' perceived the interaction with the SIA and health care as ranging from coherent to fragmented. Being on sick leave was described as going through a process of adjustment in both private and working life. This process of adjustment was interactive and included not only the possibilities to adjust work demands and living conditions but also personal and emotional adjustment. The informants' experiences of fragmented interaction reflected a sense that their entire situation was not being taken into account. Coherent interaction was described as facilitating recovery and return to work, while fragmented interaction was described as obstructing this. The complex division of responsibilities within the Swedish rehabilitation system may hamper sickness absentees' possibilities of taking responsibility for their own rehabilitation.Conclusions:This study shows that people on sick leave considered the interaction with the SIA and health care as an important part of the rehabilitation process. The contact with these actors was perceived as affecting recovery and return to work. Working for a more coherent process of rehabilitation and offering professional guidance to patients on sick leave might have an empowering effect.
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| 6. |
- Lydell, Marie, et al.
(författare)
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Thoughts and feelings of future working life as a predictor of return to work : a combined qualitative and quantitative study of sick-listed persons with musculoskeletal disorders
- 2011
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Ingår i: Disability and Rehabilitation. - London : Taylor & Francis Group. - 0963-8288. ; 33:13-14, s. 1262-1271
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Tidskriftsartikel (refereegranskat)abstract
- Purpose. The main aim of this study was to describe the thoughts and feelings of future working life related to return to work (RTW) in sick-listed persons due to musculoskeletal disorders (MSD). Further aim was to compare these descriptions with the person's actual working situation 1, 5 and 10 years after a rehabilitation period. Methods. This study consisted of two parts. The first part had an explorative design, and qualitative content analysis was chosen in order to analyse the response to an open question regarding future working life answered before, persons sick-listed due to MSD (n = 320), took part in a rehabilitation programme 10 years ago. The second part had a prospective design and quantitative analysis was used to compare the results of the qualitative analysis with RTW and the working situation 1, 5 and 10 years after baseline. Results. Three categories emerged from the data with a total of nine subcategories. In the categories Motivation and optimism and Limitations to overcome, there were significantly more persons who had RTW 1 year after baseline when compared with the category Hindrance and hesitation. There were also some significant differences between the subcategories. Conclusions. The question, regarding thoughts and feelings of future working life, may be a simple screening method to predict RTW in persons sick-listed with MSD. This will guide the rehabilitation team to adjust the rehabilitation to each person's needs and facilitating RTW.
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| 7. |
- Norddahl, Gudmundur L., et al.
(författare)
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Accumulating mitochondrial DNA mutations drive premature hematopoietic aging phenotypes distinct from physiological stem cell aging
- 2011
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Ingår i: Cell Stem Cell. - Cambridge Mass. : Cell Press. - 1934-5909. ; 8:5, s. 499-510
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Tidskriftsartikel (refereegranskat)abstract
- Somatic stem cells mediate tissue maintenance for the lifetime of an organism. Despite the well-established longevity that is a prerequisite for such function, accumulating data argue for compromised stem cell function with age. Identifying the mechanisms underlying age-dependent stem cell dysfunction is therefore key to understanding the aging process. Here, using a model carrying a proofreading-defective mitochondrial DNA polymerase, we demonstrate hematopoietic defects reminiscent of premature HSC aging, including anemia, lymphopenia, and myeloid lineage skewing. However, in contrast to physiological stem cell aging, rapidly accumulating mitochondrial DNA mutations had little functional effect on the hematopoietic stem cell pool, and instead caused distinct differentiation blocks and/or disappearance of downstream progenitors. These results show that intact mitochondrial function is required for appropriate multilineage stem cell differentiation, but argue against mitochondrial DNA mutations per se being a primary driver of somatic stem cell aging.
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| 8. |
- Shang, X. -J, et al.
(författare)
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Quantum-dot-induced optical transition enhancement in InAs quantum-dot-embedded p-i-n GaAs solar cells
- 2011
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Ingår i: Applied Physics Letters. - New York, N.Y. : American Institute of Physics (AIP). - 0003-6951. ; 99:11, s. 113514-113514-3
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Tidskriftsartikel (refereegranskat)abstract
- Photocurrents (PCs) of three p–i–n GaAs solar cells, sample A with InAs quantum dots (QDs) embedded in the depletion region, B with QDs in the n region, and C without QDs, were studied experimentally and theoretically. Above GaAs bandgap, the PC of A is increased, while B is decreased with respect to C, since in A, the QD-induced reflection of hole wave function increases its overlap with electron wave function so that the optical transition rate is enhanced, while carrier mobility in B is reduced due to QD-induced potential variations. Moreover, A and B have increased PCs in the sub-GaAs-bandgap range due to QD optical absorptions.
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| 9. |
- Svedberg, Petra, 1973-
(författare)
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Attitudes to health promotion interventions among patients in mental health services : Differences in relation to socio-demographic clinical and health-related variables
- 2011
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Ingår i: Journal of Mental Health. - Informa Healthcare. - 0963-8237. ; 20:2, s. 126-135
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Tidskriftsartikel (refereegranskat)abstract
- Background: Increasing evidence about the high social and economic costs of poor mental health has contributed to a growing recognition of the need for health promotion interventions in mental health services. In spite of this, little empirical research has been performed investigating patients' attitudes to health promotion interventions. Aims: The aim of the present study was to investigate differences in patients' attitudes to health promotion interventions with regard to socio-demographic, clinical and health-related variables. Methods: The study has a cross-sectional design. The participants were recruited randomly and consisted of 141 outpatients, 91 women and 50 men. The participants rated their attitudes in accordance to the Health Promotion Intervention Questionnaire (HPIQ). Results: The result showed a clear indication that there are gender differences in attitudes of health promotion interventions in mental health services. The main significant differences were that, females rated overall health promotion interventions as well as alliance and empowerment as more important than males did. Conclusions: It is suggested that gender issues have to be considered in health promotion interventions in mental health services and taken into account in the assessment, planning and delivery of the interventions as well as the evaluation of outcomes.
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| 10. |
- Thiere, Geraldine, et al.
(författare)
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Nitrogen retention versus methane emission : Environmental benefits and risks of large-scale wetland creation
- 2011
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Ingår i: Ecological Engineering : The Journal of Ecotechnology. - Elsevier. - 0925-8574. ; 37:1, s. 6-15
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Tidskriftsartikel (refereegranskat)abstract
- Coastal eutrophication by nutrient fluxes from agricultural land to marine recipients is presently combated by measures such as the implementation of watershed-scale wetland creation programs aimed at nitrogen removal. Such created agricultural wetlands – termed ‘nitrogen farming wetlands’ (NFWs) – receive nitrogen (N) loads predominantly as nitrate, facilitating N removal by denitrification. However, the conversion of agricultural soils into waterlogged wetland area is likely to increase climate gas emissions, particularly methane (CH4). There is thus a need to evaluate the benefits and risks of wetland creation at a large, watershed-scale. Here we investigate N retention and CH4 emission originating from watershed-scale wetland creation in South Sweden, the relation between both processes, and how CH4 emission depends on individual wetland parameters. We combine data from intensively studied reference wetlands with an extensive wetland survey to predict N retention and CH4 emission with simple models, to estimate the overall process rates (large-scale effects) as well as spatial variation among individual NFWs. We show that watershed-scale wetland creation serves targeted environmental objectives (N retention), and that CH4 emission is comparably low. Environmental benefit and risk of individual wetlands were not correlated, and may thus be managed independently. High cover of aquatic plants was the most important wetland property that suppressed CH4 net production, potentially facilitating N retention simultaneously. Further, differences between wetlands in water temperature and wetland age seemed to contribute to differences in CH4 net production. The nationally planned wetland creation (12,000 ha) could make a significant contribution to the targeted reduction of N fluxes (up to 27% of the Swedish environmental objective), at an environmental risk equaling 0.04% of the national anthropogenic climate gas emission.
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