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Background: Meniscus injury and meniscectomy both entail increased risk of knee osteoarthritis (OA). Thigh muscle weakness is a suggested mediator of OA but there is little evidence of its importance for knee OA development after meniscectomy. This study aimed to examine the association between thigh muscle strength after partial meniscectomy in middle-aged subjects with a non-traumatic meniscal t

Introduction Fever is an integral part of the inflammatory response and has therefore likely a physiological role in fighting infections. Nevertheless, whether fever in itself is beneficial or harmful in adults is unknown. This protocol for a systematic review aims at identifying the beneficial and harmful effects of fever control interventions in adults. Methods and analysis This protocol for a s

Avhandlingsarbetet studerar hur turbulent flödesstruktur sammverkar med förbränning av högoktaniga bränslen i partiellt förblandade förhållanden genom numeriska tredimensionella flödessimuleringar. Förbränningsmoder och antändningsprocesser studeras för två olika typfall där ett flertal metoder testas med ändamålet att korrekt återge hur icke upplöst rörelsemängd växelverkar med de kemiska processThis work treats the modelling of PPC engine combustion through 3D computational fluid dynamics. In order to develop a cost-effective CFD model for the design and performance analysis of PPC engines it is important to first understand the multiple modes of combustion in PPC engines, e.g., the onset of the first ignition kernels, the propagation of the ignition/flame fronts, and the effect of charg

En ökning av andelen kollektivtrafik är en viktig del av omställningen mot lägre utsläpp av växthusgaser och mer energieffektiva transporter. I Sverige har antalet resor med kollektivtrafiken ökat med 18% mellan åren 2009 och 2015. Det finns dock en stor skillnad mellan olika regioner där ökningen varit över 20% i flera regioner medan utvecklingen av resandet har stagnerat, eller till och med mins

Context. In the advent of new infrared high-resolution spectrometers, accurate and precise atomic data in the infrared are urgently needed. Identifications, wavelengths, strengths, broadening, and hyper-fine splitting parameters of stellar lines in the near-infrared are in many cases not accurate enough to model observed spectra, and in other cases, these parameters do not even exist. Some stellar

This thesis deals with the addition of upconversion detection to non-linear mid-infrared laser spectroscopy techniques. The techniques investigated here are degenerate four wave mixing (DFWM) and infrared polarization spectroscopy (IRPS). These techniques are useful for detecting many of the key species in combustion, such as CH4, C2H6, HCl, and HCN. These species can be probed using ro-vibrationa

This paper examines the response of five prominent Swedish economists, David Davidson, Gustav Cassel, Eli Heckscher, Knut Wicksell and Bertil Ohlin, to John Maynard Keynes’s "The Economic Consequences of the Peace" and to the German reparations in the 1920s. When Keynes’s book appeared, Davidson and Cassel strongly endorsed it. Heckscher also agreed with Keynes – “a bright spot in a time of darkne

Många vill nu överge överskottsmålet i det finanspolitiska ramverket. Men det är riskfyllt. Efter den internationella finanskrisen 2008 saknade många länder med hög statsskuld utrymme för en tillräckligt expansiv finanspolitik och tvingades till den hårda åtstramningspolitik som ligger bakom de populistiska strömningarna i Europa, skriver Fredrik N G Andersson och Lars Jonung.

Capacity-building in international cooperation projects is typically founded on a conceptualisation of transmission or transfer, and thus also typically contributes to the international diffusion of certain models, systems or technologies. In European policy, this approach has been part of the strategy to strengthen the position of European HE by making HE structures in other parts of the world co

The visual world projects a complex and rapidly changing image onto the retina of many animal species. This presents computational challenges for those animals reliant on visual processing to provide an accurate representation of the world. One such challenge is parsing a visual scene for the most salient targets, such as the selection of prey amid a swarm. The ability to selectively prioritize pr

Human land use threatens global biodiversity and compromises multiple ecosystem functions critical to food production. Whether crop yield-related ecosystem services can be maintained by a few dominant species or rely on high richness remains unclear. Using a global database from 89 studies (with 1475 locations), we partition the relative importance of species richness, abundance, and dominance for

The continuous unit operation of flotation is extensively used in mineral processing, wastewater treatment and other applications for selectively separating hydrophobic particles (or droplets) from hydrophilic ones, where both are suspended in a viscous fluid. Within a flotation column, the hydrophobic particles are attached to gas bubbles that are injected and float as aggregates forming a foam o

We use Google internet search volumes to measure households’ pessimism about overall market-wide credit health in the economy, and show that this “household default sentiment” is positively correlated with the credit default swap (CDS) spread level in the market. However, while household default sentiment might drive the cost of credit to some degree, either directly or indirectly through its effe

High-energy linear particle accelerators enable exploration of the microscopic structure of pharmaceuticals, solar cells, fuel cells, high-temperature superconductors, and the universe itself. These accelerators accelerate charged particles using oscillating magnetic fields that are confined in metal cavities. The amplitudes and phases of the electromagnetic fields need to be accurately controlled

This paper examines the Swedish experience of forward guidance 2007-2018. We focus on three interrelated issues: first, the effects of forward guidance on the discussion within the Board of Directors of the Riksbank, second, on the communication between the Riksbank and the public, and third, on the interest rate expectations held by various groups in Swedish society. We conclude that forward guid

BACKGROUND: Screening for abdominal aortic aneurysm (AAA) in elderly men reduces aneurysm related mortality. AAA is commonly defined as an infrarenal aortic diameter (IAD) of ≥30 mm, which is based on the definition of an arterial aneurysm as a focal dilation of 150% or more compared to the expected diameter of about 20 mm. The IAD has been shown to correlate to body surface area (BSA). The aim of

Climate change shocks and stresses are expected to increasingly affect urban areas in Sub-Sahara Africa (SSA). However, there remain gaps in understanding local precipitation extremes and influential factors that can enhance urban resilience. This study synthesized determinants of urban resilience, investigated historic and projected precipitation extremes up to the year 2050. Also assessed were f