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Optical properties of soot have been investigated with and without potassium chloride (KCl) salt added to the soot formation process in a premixed ethylene/air flame. A strong decrease in optical absorption efficiency of the soot was observed with increasing amounts of KCl added to the fuel based on the method of fluence curve analysis using laser-induced incandescence (LII). To understand the rea

The purpose of this work is to establish the critical surface conditions leading to the initiation of stress-corrosion cracks on the assupplied surfaces of three unidirectional E-glass/polymer composites with modified polyester, epoxy and vinyl ester resins subjected to a nitric acid solution without mechanical loads. The composite materials considered in this study are commonly used in composite

Supersonic gas turbulence is a ubiquitous property of the interstellar medium. The level of turbulence, quantified by the gas velocity dispersion (σg), is observed to increase with the star formation rate (SFR) of a galaxy, but it is yet not established whether this trend is driven by stellar feedback or gravitational instabilities. In this work, we carry out hydrodynamical simulations of entire d

A large share of health-related information is today sought and communicated via the internet, including in social media. Questions have been raised about how this may affect health perceptions and behaviors, not least by enabling the communication of claims that contradict information from established medical authorities. As an example, knowledge claims about systemic side effects of the contrace

Abstract in FrenchDepuis longtemps, les anthropologues sont fascinés par les adaptations similaires et les différences intrigantes des cultures circumpolaires. Ces tendances ont été cartographiées, étudiées et interprétées sous différents angles, souvent à des niveaux sociaux ou spatiotemporels différents. Même si ces études ont produit d’importantes quantités de données, celles-ci ne couvrent pasAnthropologists have long been fascinated by the strikingly similar adaptations of circumpolar cultures as well as their puzzling differences. These patterns of diversity have been mapped, studied, and interpreted from many perspectives and often at different social and spatiotemporal scales. While this work has generated vast archives of legacy data, it has also left behind a fragmented understan

In contrast to static objects, liquid structures such as drops, blobs, as well as waves and ripples on water surfaces are challenging to image in 3D due to two main reasons: First, the transient nature of those phenomena requires snapshot imaging that is fast enough to freeze the motion of the liquid. Second, the transparency of liquids and the specular reflections from their surfaces induce compl

It has previously been shown by the authors that the pre-chamber ignition technique operating with fuel-rich pre-chamber combustion strategy is a very effective means of extending the lean limit of combustion with excess air in heavy duty natural gas engines in order to improve indicated efficiency and reduce emissions. This article presents a study of the influence of pre-chamber volume and nozzl

Three different, state-of-the-art biogeochemical models are adapted in order to quantify the carbon dioxide (CO2), nitrous oxide (N 2O), and methane (CH4) exchanges between arable lands and the atmosphere. Biome-BGC and MOD17 are validated using the long-term measurement results from Hegyhátsál tall tower site (Western Hungary). After a simple bias correction, it was found that Biome-BGC is capabl

Saving battery time for mobile devices has been a goal for the industry for many years. With the advent of smartphones, reduction of energy consumption is even more important since they consume a lot more energy than the generation of mobile phones before them. Consumers are demanding longer battery life and greener electronics. One way to meet these demands is to reduce energy consumption. In ord

The use of area-based approaches in urban regeneration is widely accepted in the European community. As these projects are based on the context of the focal area, there is no one-size-fits-all solution on how to design and implement those. The Eco-city Augustenborg project is an environmentally-led urban regeneration project initiated in Malmö in 1998. Today, fifteen years after the project was in

Functional food (FF) is a relatively new sector in the food industry. FF are products that have an added nutritional value for consumers that is communicated through nutritional and health claims, and act as preventive agents of chronic diseases. Innovation of new FF products has grown to become an important impact in research towards preventing welfare diseases. The rate of innovation in this fie

This study sought to investigate the effect of microplastics on Mytilus edulis’s ability to filtrate water. The mussels were sampled at Hanö bay located in the Baltic Sea, and were transported to a controlled environment. The mussels were exposed to three different solutions, one containing a concentration of 1 000 Microbeads (diameter 10 μm) per liter, one containing the same amount of plastic be

Organisational learning is assumed to be a part of creating improved work processes in an organisation. This type of learning can be difficult to achieve in operational and reactive work environments. Challenges in observable causality, time constraints and complex external conditions means that the operational control room is one of those reactive work environments. There is a need for a system t

Globalization has led to an increase in competition between places in hopes of attracting mobile capital and investments as well as new inhabitants and tourists. Nature-based tourism has become one of the most steadily growing markets for tourism in Europe. In order for a place to be attractive it has to have a brand that can be constructed depending what sort of resources a place has. A place is

Constructing dam is a possible solution for remitting the scarcity of irrigation water resource in Bortala, Northwest China. Considering the complexity of dam site selection, Analytic Hierarchy Process (AHP) was chosen in combination of Geographic Information System (GIS) as the method of Multi-Criteria Decision Making on selecting dam site. Precipitation, slope, geological layer, soil type, land

Popular science summary Is the European hake “shrinking” under the current fishing practices? Did you know that the current fishing practices have caused significant declines in body size of many exploited fishing stocks? This effect of fishing management has become one of the major threats for commercially exploited fish species and it can have severe negative consequences for the offspring of

Valutakursrisk har historiskt hanterats med negativt korrelerad eller okorrelerade instrument för att minska den totala risken i en portfölj. Som ett resultat av en integrerad värld har sådana instrument blivit allt mer sällsynta. Råvaror såsom guld har påvisat ett negativt samband och mycket av den bakomliggande teorin i uppsatsen är därför starkt relaterad till guldet. Digitala valutor är ett nyExchange rate risk has historically been dealt with through negatively correlated or uncorrelated instruments in order to reduce the overall risk in a portfolio. As a result of an integrated world, such instruments have become increasingly rare. Commodities such as gold have demonstrated a negative relationship, therefore much of the underlying theory in this thesis is strongly related to gold. Di

The basis of this study lies in implementing Information systems (IS) and the related issue of user resistance. An IS-implementation can be a challenging process and there are numerous pitfalls. One of these pitfalls is the emergence of user resistance, and previous research indicates the management of user resistance can be affected by contextual factors of the IS-implementation. The purpose of t

Sweden is striving to fulfill Vision Zero, a road traffic safety project that aims to prevent people from getting killed or seriously injured in traffic. To further improve safety and accessibility of the existing roads, widening of roads can be performed. The purpose of this thesis is to identify and summarize different variants of construction for road widening, using the existing data and exper