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- Thiele, I., et al.
(författare)
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A community-driven global reconstruction of human metabolism
- 2013
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Ingår i: Nature Biotechnology. - : Springer Science and Business Media LLC. - 1087-0156 .- 1546-1696. ; 31:5, s. 419-
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Tidskriftsartikel (refereegranskat)abstract
- Multiple models of human metabolism have been reconstructed, but each represents only a subset of our knowledge. Here we describe Recon 2, a community-driven, consensus 'metabolic reconstruction', which is the most comprehensive representation of human metabolism that is applicable to computational modeling. Compared with its predecessors, the reconstruction has improved topological and functional features, including similar to 2x more reactions and similar to 1.7x more unique metabolites. Using Recon 2 we predicted changes in metabolite biomarkers for 49 inborn errors of metabolism with 77% accuracy when compared to experimental data. Mapping metabolomic data and drug information onto Recon 2 demonstrates its potential for integrating and analyzing diverse data types. Using protein expression data, we automatically generated a compendium of 65 cell type-specific models, providing a basis for manual curation or investigation of cell-specific metabolic properties. Recon 2 will facilitate many future biomedical studies and is freely available at http://humanmetabolism.org/.
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- Fellinger, Joris, et al.
(författare)
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Tungsten based divertor development for Wendelstein 7-X
- 2023
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Ingår i: Nuclear Materials and Energy. - 2352-1791. ; 37
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Tidskriftsartikel (refereegranskat)abstract
- Wendelstein 7-X, the world’s largest superconducting stellarator in Greifswald (Germany), started plasma experiments with a water-cooled plasma-facing wall in 2022, allowing for long pulse operation. In parallel, a project was launched in 2021 to develop a W based divertor, replacing the current CFC divertor, to demonstrate plasma performance of a stellarator with a reactor relevant plasma facing materials with low tritium retention. The project consists of two tasks: Based on experience from the previous experimental campaigns and improved physics modelling, the geometry of the plasma-facing surface of the divertor and baffles is optimized to prevent overloads and to improve exhaust. In parallel, the manufacturing technology for a W based target module is qualified. This paper gives a status update of project. It focusses on the conceptual design of a W based target module, the manufacturing technology and its qualification, which is conducted in the framework of the EUROfusion funded WPDIV program. A flat tile design in which a target module is made of a single target element is pursued. The technology must allow for moderate curvatures of the plasma-facing surface to follow the magnetic field lines. The target element is designed for steady state heat loads of 10 MW/m2 (as for the CFC divertor). Target modules of a similar size and weight as for the CFC divertor are assumed (approx. < 0.25 m2 and < 60 kg) using the existing water cooling infrastructure providing 5 l/s and roughly maximum 15 bar pressure drop per module. The main technology under qualification is based on a CuCrZr heat sink made either by additive manufacturing using laser powder bed fusion (LPBF) or by uniaxial diffusion welding of pre-machined forged CuCrZr plates. After heat treatment, the plasma-facing side of the heat sink is covered by W or if feasible by the more ductile WNiFe, preferably by coating or alternatively by hot isostatic pressing W based tiles with a soft OFE-Cu interlayer. Last step is a final machining of the plasma-exposed surface and the interfaces to the water supply lines and supports to correct manufacturing deformations.
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- Constant, D, et al.
(författare)
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Immediate versus delayed insertion of the copper intrauterine device after medical abortion at 17-20 gestational weeks: a randomised controlled trial
- 2022
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Ingår i: BMJ sexual & reproductive health. - : BMJ. - 2515-2009 .- 2515-1991. ; 48:1, s. 28-34
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Tidskriftsartikel (refereegranskat)abstract
- This trial reports on use of the copper intrauterine device (IUD) after immediate compared with delayed insertion following medical abortion at 17–20 gestational weeks (GW).MethodsThis randomised controlled trial was conducted at one tertiary hospital and five community healthcare centres in Cape Town, South Africa. Eligible consenting women were randomised to immediate (within 24 hours) or delayed (3 weeks post-abortion) insertion of the copper IUD. Follow-up was at 6 weeks, 3 months and 6 months. Main outcomes were use of the original IUD and use of any IUD, including replacement IUDs at 6 weeks post-abortion. Secondary outcomes included rates of expulsion and malposition at 6 weeks, use of any IUD at 3 and 6 months, and acceptability of the IUD.ResultsWe recruited and randomised 114 women admitted for elective medical abortion between August 2018 and June 2019. In the immediate and delayed study arms, respectively, 45/55 (82%) and 12/57 (21%) women received the IUD as planned. By intention-to-treat, 56% in the immediate and 19% in the delayed arms were using the original IUD at 6 weeks (p<0.001), and 76% in the immediate and 40% in the delayed arms were using any IUD (p<0.001). Complete expulsion or removal occurred in 32% in the immediate and 7% in the delayed arms (p=0.044).ConclusionsInsertion of an IUD immediately after medical abortion at 17–20 GW results in increased use after 6 weeks compared with delayed insertion, however expulsion rates are higher than with interval insertion.Clinical trials registrationNCT03505047), Pan African Trials Registry (www.pactr.org), 201804003324963
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