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- Ascher, Henry, 1953, et al.
(author)
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”Utvecklingen går i en annan riktning än vad forskningen visar krävs för att stödja ensamkommande barn och unga.”
- 2018
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In: Sydsvenskan. - 1652-814X. ; :26 november 2018
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Journal article (pop. science, debate, etc.)abstract
- Som sakkunniga är vi bekymrade över att utvecklingen i stor utsträckning går i en annan riktning än vad forskningen visar krävs för att stödja ensamkommande barn och unga. Den går också i en annan riktning än FN:s konvention om barnets rättigheter som blir svensk lag om drygt ett år. Den 21 december ska riksdagen besluta om den tillfälliga utlänningslagen ska upphöra, förlängas eller permanentas. Det är viktigt att det är grundat i den forskning, de fakta och de analyser av de etiska utmaningarna som finns om de ensamkommandes fysiska och psykiska hälsa, funktionsförmåga och integration inte ska påverkas negativt. Det skulle också få negativa effekter för hela Sverige.
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- Balzarotti, A, et al.
(author)
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W=0 pairing in Hubbard and related models of low-dimensional superconductors
- 2004
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In: Journal of Physics: Condensed Matter. - 1361-648X. ; 16:47, s. 1387-1422
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Research review (peer-reviewed)abstract
- Lattice Hamiltonians with on-site interaction W have W = 0 solutions, that is, many-body singlet eigenstates without double occupation. In particular, W = 0 pairs give a clue to understand the pairing force in repulsive Hubbard models. These eigenstates are found in systems with high enough symmetry, like the square, hexagonal or triangular lattices. By a general theorem, we propose a systematic way to construct all the W = 0 pairs of a given Hamiltonian. We also introduce a canonical transformation to calculate the effective interaction between the particles of such pairs. In geometries appropriate for the CuO2 planes of cuprate superconductors, armchair carbon nanotubes, or cobalt oxide planes, the dressed pair becomes a bound state in a physically relevant range of parameters. We also show that W = 0 pairs quantize the magnetic flux as superconducting pairs do. The pairing mechanism breaks down in the presence of strong distortions. The W = 0 pairs are also the building blocks for the antiferromagnetic ground state of the half-filled Hubbard model at weak coupling. Our analytical results for the 4 x 4 Hubbard square lattice, compared to available numerical data, demonstrate that the method, besides providing an intuitive grasp on pairing, also has quantitative predictive power. We also consider including phonon effects in this scenario. Preliminary calculations with small clusters indicate that vector phonons hinder pairing while half-breathing modes are synergic with the W = 0 pairing mechanism both at weak coupling and in the polaronic regime.
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- Begley, Cecily, 1954, et al.
(author)
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A systematic review identifying outcomes to measure the effect of oxytocin used in treating delay in labour
- 2014
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In: Optimizing childbirth across Europe - an intedisciplinary maternity care conference. 9-10 April 2014, Brussels. Part of COST Action IS0907: Childbirth Cultures, Concerns & Consequences: Creating a dynamic EU framework for Optimal maternity care..
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Conference paper (other academic/artistic)abstract
- Background: Different outcome measures have been used in studies examining the effects of oxytocin used to treat delay in labour. Comparison of study results is thus difficult, and evidence is inconsistent. Aims of review: To identify outcomes, including salutogenic, positive, health-focussed outcomes, used in systematic reviews and randomised trials designed to measure the effectiveness of oxytocin used to treat delay in labour. This review was supported by the European Commission under COST Action:IS0907. Search and review methodology: A comprehensive search strategy was employed, and eight relevant citation databases were searched up to January 2013. randomised trials, and systematic reviews of randomised trials, that measured effectiveness of oxytocin in treating delay in labour were included. Trials comparing different action lines on partograms or active management of labour were excluded. Two reviewers screened a total of 1918 citations identified and data were extracted independently. no results were to be used, therefore no quality assessment of papers was required. five systematic reviews and 26 randomised trials were included. Primary and secondary outcomes were recorded and frequency distributions calculated. Findings: Primary outcomes used most frequently were caesarean section (n=15, 46%), labour length (n=14, 42%), measurements of uterine activity (n=13, 39%) and mode of vaginal birth (n=9, 27%). maternal satisfaction was identified a priori by only one review and included by four papers as a secondary outcome. no further salutogenic or positive health-focussed outcomes were identified. Conclusions: heterogeneous outcomes were used to measure the effectiveness of oxytocin in treating delay in labour. Additional salutogenic, women-centred and health-focussed outcomes should be included in future randomised trials of oxytocin used as a treatment for delayed labour. An improved focus on salutogenesis in childbirth may result, with potential for increased resilience in women. A core outcome dataset, based on evidence and applicable for evaluating the effects of oxytocin in prolonged labour, should be generated to support future research.
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- Bossér, Ulrika, 1976-
(author)
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Exploring the complexities of integrating socioscientific issues in science teaching
- 2018
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Doctoral thesis (other academic/artistic)abstract
- Socioscientific issues, SSI, can briefly be described as societal issues in which science plays a role. Dealing with SSI in science education is a means to prepare and empower students for active and responsible participation in a complex, democratic society. The implementation of SSI-based teaching calls for classroom practices in which scientific evidence alongside for example social and ethical perspectives are considered. Discourse-based teaching activities are emphasized as a means to provide opportunities for students to practice negotiations of SSI and explore diverse viewpoints on the issues. Dealing with SSI in science teaching is recognized as a challenging task for science teachers. This thesis aims to provide knowledge to support the implementation of SSI-based science teaching. Three studies involving two upper secondary school science teachers are performed to achieve this aim. The first study makes use of video-stimulated discussions to investigate the two teachers’reflections on their classroom practices while they implement SSI throughout an academic year. The second study utilizes the concept positioning as a tool to identify and describe the ways in which one teacher’s interactions with students during group work make available different parts for the students to play as participants, when dealing with SSI in the classroom. The third study makes use of the concept communicative approach to investigate how the two teachers’ management of classroom discussions sets conditions for the consideration of multiple perspectives relevant to SSI, including the students’ viewpoints. The results provide knowledge useful when making considerations about the design and enactment of teaching activities in relation to specific educational goals. The results suggest that a specific challenge with designing and enacting SSI-based teaching activities is to balance between controlling and directing the teaching activities to promote specific learning goals and providing space for students’ participation and perspectives. The results of employing the analytical tools elucidate how this challenge can play out in classroom practice and contribute with knowledge of the ways in which teachers’ discursive practices play a role in addressing this challenge. Strategies to support teachers’ implementation of SSI-based teaching that take account of teachers’ existing practices are discussed.
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| 8. |
- Fitzal, Florian, et al.
(author)
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Retrospective, Multicenter Analysis Comparing Conventional with Oncoplastic Breast Conserving Surgery : Oncological and Surgical Outcomes in Women with High-Risk Breast Cancer from the OPBC-01/iTOP2 Study
- 2022
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In: Annals of Surgical Oncology. - : Springer Nature. - 1068-9265 .- 1534-4681. ; 29:2, s. 1061-1070
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Journal article (peer-reviewed)abstract
- Introduction Recent data suggest that margins >= 2 mm after breast-conserving surgery may improve local control in invasive breast cancer (BC). By allowing large resection volumes, oncoplastic breast-conserving surgery (OBCII; Clough level II/Tubingen 5-6) may achieve better local control than conventional breast conserving surgery (BCS; Tubingen 1-2) or oncoplastic breast conservation with low resection volumes (OBCI; Clough level I/Tubingen 3-4). Methods Data from consecutive high-risk BC patients treated in 15 centers from the Oncoplastic Breast Consortium (OPBC) network, between January 2010 and December 2013, were retrospectively reviewed. Results A total of 3,177 women were included, 30% of whom were treated with OBC (OBCI n = 663; OBCII n = 297). The BCS/OBCI group had significantly smaller tumors and smaller resection margins compared with OBCII (pT1: 50% vs. 37%, p = 0.002; proportion with margin <1 mm: 17% vs. 6%, p < 0.001). There were significantly more re-excisions due to R1 ("ink on tumor") in the BCS/OBCI compared with the OBCII group (11% vs. 7%, p = 0.049). Univariate and multivariable regression analysis adjusted for tumor biology, tumor size, radiotherapy, and systemic treatment demonstrated no differences in local, regional, or distant recurrence-free or overall survival between the two groups. Conclusions Large resection volumes in oncoplastic surgery increases the distance from cancer cells to the margin of the specimen and reduces reexcision rates significantly. With OBCII larger tumors are resected with similar local, regional and distant recurrence-free as well as overall survival rates as BCS/OBCI.
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| 9. |
- Gerth, Julius, et al.
(author)
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Physical Activity Intensity Distribution during Physical Education among Swedish Upper Secondary School Students
- 2019
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In: Scandinavian Sport Studies Forum. - 2000-088X. ; 10, s. 163-175
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Journal article (peer-reviewed)abstract
- Background: Physical education (PE) has been identified as a potentially powerful domain to promote physical activity (PA) among school-aged youth. In Sweden, there is a lack of studies investigating PA intensity distribution during PE among upper secondary school student. Aim: The aim of this study was to investigate PA intensity distribution during PE among Swedish upper secondary school students. Methods: PA was measured during 41 PE lessons among 121 (n = 75 boys) Swedish upper secondary school students (ages 16-18 years) using hip-mounted objective activity monitors from ActiGraph™ (GT3X+ accelerometers). Results: The participants spent a median of 23% of the PE lessons time being sedentary, 17% in light PA (LPA), and 59% in moderate-to-vigorous PA (MVPA). There were no differences between boys and girls for neither sedentary (p = .185), LPA (p = .377), or MVPA (p = .839). Sedentary (p = .001) and LPA (p < .0001) were lower and MVPA (p < .0001) higher during fitness-related activities when compared to invasion games. Conclusion: A median of 59% of the PEL time was spent in MVPA which is relatively high in an international comparison. No differences were observed between boys and girls. Fitness-related activities contributed to higher MVPA when compared to invasion games.
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| 10. |
- Högberg, Mona N, et al.
(author)
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Does ectomycorrhiza have a universal key role in the formation of soil organic matter in boreal forests?
- 2020
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In: Soil Biology and Biochemistry. - : Elsevier BV. - 0038-0717 .- 1879-3428. ; 140
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Journal article (peer-reviewed)abstract
- Forest soil organic matter (SOM) is an important dynamic store of C and N, which releases plant available N and the greenhouse gases CO2 and N2O. Early stages of decomposition of recent plant litters are better known than the formation of older and more stable soil pools of N and C, in which case classic theory stated that selective preservation of more resistant plant compounds was important. Recent insights heighten that all plant matter becomes degraded and that older SOM consists of compounds proximally of microbial origin. It has been proposed that in boreal forests, ectomycorrhizal fungi (ECMF), symbionts of trees, are actively involved in the formation of slowly-degrading SOM.We characterized SOM in the mor-layer along a local soil N supply gradient in a boreal forest, a gradient with large variations in chemical and biological characteristics, notably a decline in the biomass of ECMF in response to increasing soil N supply.We found contrasting and regular patterns in carbohydrates, lignin, aromatic carbon, and in N-containing compounds estimated by solid-state C-13 and N-15 nuclear magnetic resonance (NMR) spectroscopy. These occurred along with parallel changes in the natural abundances of the stable isotopes C-13 and N-15 in both bulk SOM and extracted fractions of the SOM. The modelled "bomb-C-14" age of the lower layers studied ranged between 15 years at the N-poor end, to 70 years at the N-rich end of the gradient. On average half the increase in delta C-13 with soil depth (and hence age) of the mor-layer can be attributed to soil processes and the other half to changes in the isotopic composition of the plant C inputs. There was a decrease in carbohydrates (O-alkyl C) with increasing depth. This supports the classical hypothesis of declining availability of easily decomposable substrates to microorganisms with increasing soil depth and age. The observed increase in delta C-13 with depth, however, speaks against the idea of selective preservation of more resistant plant compounds like lignin. Furthermore, from the N-poor to the N-rich end the difference between N-15 in plant litter N and N in the deeper part of the mor-layer, the H-layer, decreased in parallel with a decline in ECMF.The latter provides evidence that the role of ECMF as major sink for N diminishes, and hence their potential role in SOM stabilization, when the soil N supply increases. At the N-rich end, where bacteria dominate over fungi, other agents than ECMF must be involved in the large build-up of the H-layer with the slowest turnover rate found along the gradient.
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