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Tiivistelmä. Valokaariuunia käytetään teräksen valmistuksessa. Sähkövirran avulla sulatetaan kierrätysromusta terästä. Kierrätysromun esikuumennus ja kuivaus ovat merkittävässä roolissa erityisesti niissä terästä tuottavissa maissa, joissa on kostea ilmasto. Kostean ilmaston takia romun sekaan pääsee vettä, joka voi valokaariuunissa aiheuttaa laiterikkoja sekä vaaraa ihmisille. Kaikissa maissa ei ole tätä ongelmaa, jolloin kierrätysromu voidaan panostaa suoraan valokaariuuniin, ilman esikuumennusta ja kuivausta. Työn tavoitteena oli tehdä kirjallisuusselvitys erilaisista rautaromun panostusmenetelmistä valokaariuuniin. Työssä selitettiin myös, miten romua voidaan esilämmittää ja kuumentaa. Erityisesti työssä vertailtiin Consteel- ja Quantum-menetelmiä. Johtopäätöksenä huomattiin menetelmissä eroavaisuuksia niin rakenteessa, hyödyissä ja haitoissa, kuin myös energian kulutuksessa sekä käsittelyajoissa.

The upscaling of wind turbines results in fewer units per installed MW reducing infrastructure and maintenance costs of offshore wind farms. Multi rotor systems (MRS), comprising many wind turbine rotors on a single support structure, are potentially a means to maximize the upscaling benefit in achieving larger unit capacities than is feasible or economic with the conventional, 3-bladed horizontal axis wind turbine (HAWT). The MRS has an inherent upscaling advantage which, for a system with many rotors compared to a single rotor, reduces the total weight and cost of rotor-nacelle assemblies by a large factor. An innovative MRS design is presented based on vertical axis wind turbine (VAWT) rotors of the 2-bladed, H-type. Many disadvantages of VAWT design compared to HAWT in a single rotor system (reduced power performance and higher drive train torque, for example) are resolved in the MRS configuration. In addition, reduced component number and simpler components is advantageous for reliability and O&M cost. This MRS concept has many synergies arising from the choice of VAWT rotors. Results comprise a high-level evaluation of system characteristics and the first stage of more detailed investigation of aerodynamics of the high aspect ratio VAWT., Wind Energy

Kawasaki disease (KD) is a paediatric vasculitis associated with coronary artery aneurysms (CAA). Genetic variants influencing susceptibility to KD have been previously identified, but no risk alleles have been validated that influence CAA formation. We conducted a genome-wide association study (GWAS) for CAA in KD patients of European descent with 200 cases and 276 controls. A second GWAS for susceptibility pooled KD cases with healthy paediatric controls from vaccine trials in the UK (n = 1609). Logistic regression mixed models were used for both GWASs. The susceptibility GWAS was meta-analysed with 400 KD cases and 6101 controls from a previous European GWAS, these results were further meta-analysed with Japanese GWASs at two putative loci. The CAA GWAS identified an intergenic region of chromosome 20q13 with multiple SNVs showing genome-wide significance. The risk allele of the most associated SNV (rs6017006) was present in 13% of cases and 4% of controls; in East Asian 1000 Genomes data, the allele was absent or rare. Susceptibility GWAS with meta-analysis with previously published European data identified two previously associated loci (ITPKC and FCGR2A). Further meta-analysis with Japanese GWAS summary data from the CASP3 and FAM167A genomic regions validated these loci in Europeans showing consistent effects of the top SNVs in both populations. We identified a novel locus for CAA in KD patients of European descent. The results suggest that different genes determine susceptibility to KD and development of CAA and future work should focus on the function of the intergenic region on chromosome 20q13.