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Wear mechanisms and failure modes were investigated for autoclave-cured, woven carbon fiber-reinforced polymer (CFRP) composite gears in a mesh with a surface-hardened, 42CrMo4 steel pinion. The reference gears (m = 1 mm, b = 2 mm, z = 20) were tested at torque levels ranging from 0.4 Nm to 0.8 Nm. The temperature was monitored with a thermographic camera, while the gear damage and wear volume wer

The article presents a comprehensive study on the tooth bending strength of spur gears with a progressive curved path of contact, or so-called S-gears. Systematic gear meshing simulations were conducted to study the effects of S-gear geometry parameters on tooth bending strength. Different S-gear geometries were analysed in a systematically organized manner, and a comparison was made against a sta

Contemporary ghost stories can be mediated through television series that familiarize viewers with the idea of supernatural/spiritual phenomena, and present a way of witnessing, experiencing and dealing with such phenomena. TheSwedish TV series Det Okända(The Unknown) is an example of such a production. A –presumably –spiritual phenomenon is tailored to fit a popular culture format and is served t

The focus of this study was the empirical modelling of the high-speed bearings life and failure modes of a through-flow universal motor. An approach was used facilitating predictions of the life through-range of various conditions. The model estimates bearing life for the survival probability of 50% – L50. It influences parameters such as bearing temperature, speed factor, equivalent load, grease

Om Björkliden och Tornehamns rallarkyrkogård

The extreme 2018 hot drought that affected central and northern Europe led to the worst wildfire season in Sweden in over a century. The Ljusdal fire complex, the largest area burnt that year (8995 ha), offered a rare opportunity to quantify the combined impacts of wildfire and post-fire management on Scandinavian boreal forests. We present chamber measurements of soil CO2 and CH4 fluxes, soil mic

SUMMARY: Protein-protein interactions (PPI) are central in many biological processes but difficult to characterize, especially in complex, unfractionated samples. Chemical cross-linking combined with mass spectrometry (MS) and computational modeling is gaining recognition as a viable tool in protein interaction studies. Here, we introduce Cheetah-MS, a web server for predicting the PPIs in a compl

BackgroundHigh quality primary care is expected to be the basis of many health care systems. Expectations on primary care are rising as societies age and the burden of chronic disease grows. To stimulate adherence to guidelines and quality improvement, audit and feedback to professionals is often used, but the effects vary. Even with carefully designed audit and feedback practices, barriers relate

Många som är aktiva i samhällsdebatten vittnar om ett hårdnande klimat och en rad ordförande i olika civilsamhällesorganisationer har avgått under de senaste åren efter att ha blivit hotade och kränkta på olika sätt, vilket har uppmärksammats i media. Kunskapen om hat, hot och kränkningar mot ledare i civilsamhället är dock begränsad, både internationellt och i Sverige. Syftet med artikeln är att

This report applies the International Labour Organization´s (ILO) inclusive entrepreneurship ecosystem approach to Montenegro and outlines the possibilities for a more inclusive and sustainable ecosystem that works for all. The application of the ILO´s approach led to a comprenhensive and holistic analysis of the Montenegrin ecosystem, which was followed by clear guidance on how the ecosystem of M

The EU ETS was the first international policy instrument to introduce regulation of CO2 emissions of pulp and paper companies with installations in Europe. Out of 11, 500 installations introduced to the system about 900 were pulp and paper mills. In terms of allocated emission allowances (EUAs) the pulp and paper industry (hereafter PPI) represents two per cent of the EU ETS (Hyvärinen 2005: 40).

Gambella is one of the regional states in Ethiopia where huge tracts of land have been leased out to domestic and international investors since the global food, fuel and financial crisis of 2007/2008. The Gambella region is also one of the most marginalized regions in Ethiopia. It has been alienated from the central politics and socio-economic activities of the state. In the past, the Gambella reg

Bakgrund En av de snabbast växande kreativa branscherna i Sverige är dataspelsbranschen. En konsekvens av den snabba tillväxten är att branschen upplever stora utmaningar med sin kompetensförsörjning. I branschen finns därför en risk att arbetsbelastningen blir alltför hög och rimliga arbetsvillkor frångås. I Nordamerika och Storbritannien där branschen etablerades tidigare än i Sverige har ett an