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This paper reports on studies of multiple-injection strategies of gaseous fuel in a model combustion chamber and the role of jet-jet interactions on the mixing processes in the chamber using large-eddy simulation (LES). A high-pressure non-reacting gas flow injected through a jet with a nozzle diameter of 1.35 mm into a quiescent inert air environment is considered. First, we validate the method a
Most large tidewater glaciers in Svalbard are known to have surged at least once in the last few hundred years. However, very little information exists on the frequency, timing or magnitude of surges prior to the Little Ice Age (LIA) maximum in ∼1900. We investigate the sediment-landform assemblages produced by multiple advances of the Nathorstbreen glacier system (NGS) in order to reconstruct its
This paper examines the Nordic as an ideological, cultural, and geographical site from which to examine place branding. Although a number of studies have addressed Nordic place brands and branding, the peculiarity of branding within the Nordic welfare states remains understudied (Lucarelli et al., forthcoming 2019). The unusual open access to the field of practice granted to researchers (at least
This study is an analysis of norm critical pedagogy has been used in a pedagogic activity outside the formal, institutionalized education. The aim was to analyze how the implementation of norm critical pedagogy can be done and what effects it may have on those who participate in the educational activities. For four months, I followed the project Uppdrag Ninjas who are working with democracy, equal
It is predicted that novel nanometer-sized structures incorporating nanoparticles will have a considerable impact on our lives during the coming decades. Engineered nanoparticles are already found in a number of commercially available products. However, many applications of these nanoparticles have only reached the stage of promising ideas or research demonstrations. The number of nanoparticle-bas
New anti-inflammatory drugs with fewer adverse effects than existing drugs may prove to be useful in the treatment of several inflammatory disorders. A critical step in acute inflammation is the infiltration of neutrophils into tissues. Therefore, molecules that target and inhibit this early inflammatory event are attractive to engineer to suit medical needs. The Chemotaxis Inhibitory Protein of
Stålindustrin står för uppskattningsvis 7–9 % av de globala växthusgasutsläppen. Därför måste stålindustrin bidra till minskningen av växthusgasutsläppen. Under lång tid har stålindustrin fokuserat på mindre och frekventa inkrementella minskningar av CO2 utsläpp genom energieffektiviseringsåtgärder. Dessa åtgärder kommer inte att räcka för att nå målen som är överenskomna i Parisavtalet eftersom uThe steel industry is accountable for approximately 7–9 % of global GHG emissions. Therefore, the steel industry must contribute to the reductiuon of emissions of GHG. For a long time, the industry has focused on minor and frequent incremental reductions of CO2 emissions by implementing energy efficiency measures. However, these types of measures will not be sufficient to reach the goals agreed up
High-profile bribery scandals that involve powerful people and large sums of money are often the object of general indignation and legal action. When it comes to bribery of the everyday kind, however, it is far less obvious which gifts should be seen as bribes, be it in a moral or legal sense. Legal cases of this kind almost always include voices that strive to refute accusations of bribery. This
Soil contamination is a widespread problem and actions need to be taken in order toprevent damage to the groundwater and the life around the contaminated sites. InSweden more than 80.000 sites are potentially contaminated, therefore there is ademand for accurate and efficient methods for site characterization and soilremediation. In the past, the preferred methodology for soil remediation involved
Proteins are composed of 20 different amino acids. In the translation process, each of these 20 amino acids is specifically recognized by their cognate aminoacyl-tRNA synthetase. The fidelity of this recognition system is essential if translation is to function properly. The development of an in vitro system based on this recognition scheme would make a powerful analytical tool with which to analy
How does the brain transform the 2-D light arrays in our eyes into a meaningful 3-D description of surfaces around us? What assumptions does the visual system make about the world when information is incomplete? And how are these assumptions computationally expressed in this perceptual reconstruction process? These questions, and other aspects of binocular depth perception are analysed from a theo
The welding of dissimilar alloys is seen increasingly as a way forward to improve efficiencies in modern aeroengines, because it allows one to tailor varying material property demands across a component. Dissimilar inertia friction welding (IFW) of two high-strength steels, Aermet 100 and S/CMV, has been identified as a possible joint for rotating gas turbine components and the resulting welds are
Background Leaf-cutting ants live in symbiosis with a fungus that they rear for food by providing it with live plant material. Until recently the fungus' main inferred function was to make otherwise inaccessible cell wall degradation products available to the ants, but new studies have shed doubt on this idea. To provide evidence for the cell wall degrading capacity of the attine ant symbiont, we
This study explores the emergence of the Christian biblical canon and its significance for the early as well as for the contemporary church. Some major challenges to previous research on the biblical canon are presented. The apostolic formula "the Scriptures and the Lord" is defended as a good summary of the Christian canon, its formation and significance. It is argued that the canon was formed i
Why is waste such an important topic for understanding the management of overflow? First, because waste is a classic symbol of overflow: to be flooded with too much stuff that demands handling, sorting, and decision-making is a feeling well known in consumer society. Facts and figures speak of the same overflow. Waste disposal is a growing problem. The downside of consumption is a growing mountain
With the exponential growth of the World Wide Web, automated subject classification of Web pages has become a major research issue in information and computer sciences. Organizing Web pages into a hierarchical structure for subject browsing is gaining more recognition as an important tool in information-seeking processes. In this thesis, different automated classification approaches, focusing on
Popular Abstract in Swedish Då en struktur utsätts för varierande belastning kan brott uppstå vid väsentligt lägre last än vad som hade orsakat brott vid konstant lastnivå. Fenomenet kallas utmattning och berör många traditionella ämnen. För att kunna göra relevanta bedömningar av livslängden vid utmattningsbelastning krävs kunskap om materialets egenskaper, både mikroskopiskt och makroskopiskt, t
The objective of this work was to design and evaluate an experimental setup to be used for field studies of particle formation in biomass gasification processes. The setup includes a high-temperature dilution probe and a denuder to separate solid particles from condensable volatile material. The efficiency of the setup to remove volatile material from the sampled stream and the influence from cond
Many fish depend primarily on their tail beat for propulsion. Such a tail is commonly modeled as a two-dimensional flapping foil. Here we demonstrate a novel experimental setup of such a foil that heaves and pitches in a soap film. The vortical flow field generated by the foil correlates with thickness variations in the soap film, which appear as interference fringes when the film is illuminated w
A model of an industrial through-dryer for production of tissue paper was developed. The model can be used to predict the performance of a dryer section of an industrial through-drying machine consisting of one or more through-drying rolls separated by free draw sections. Roll diameters, wrap angles, machine speed, basis weight, initial paper moisture ratio, operating pressure differentials, dryin
