Search results

In the last couple of decades, countries have enacted new laws concerning environmental pollution caused by heavy-duty commercial and passenger vehicles. This is done mainly in an effort to reduce smog and health impacts caused by the different pollutions. One of the legislated pollutions, among a wide range of regulated pollutions, is nitrogen oxides (commonly abbreviated as NOx). The SCR (SelectIn the last couple of decades, countries have enacted new laws concerning environmental pollution caused by heavy-duty commercial and passenger vehicles. This is done mainly in an effort to reduce smog and health impacts caused by the different pollutions. One of the legislated pollutions, among a wide range of regulated pollutions, is nitrogen oxides (commonly abbreviated as NOx). The SCR (Select

To enter new markets is not easy. The most obvious challenge, at least judging from the majority of literature on internationalization, is to understand the new market thus taking a market(ing) perspective. External aspects of internationalization are often stressed, while internal aspects, focusing on why organizations fail, are less developed or examined. In order to better understand the intern

This paper focuses on the performance and efficiency of an HCCI (Homogenous Charge Compression Ignition) engine system running on natural gas or landfill gas for stationary applications. Zero-dimensional modelling and simulation of the engine, turbo, inlet and exhaust manifolds and inlet air conditioner (intercooler/heater) are used to study the effect of compression ratio and exhaust turbine size

This thesis explores the state-of-the-art methods for the optimization of Wireless Power Transfer (WPT) for Radio Frequency (RF) energy harvesting with a view of increasing the efficiency of the Radio Frequency to Direct Current (RF-to-DC) conversion, which is a key parameter in the creation of Zero Energy Devices (ZEDs) in the context of Internet of Things (IoT). The research focuses on waveform

Abstract Authors: Erika Johansson och Maria Winberg Rasmusson Title: Konflikt som lärandeprocess? En studie om konflikter inom HVB-hem för ungdomar. Conflict as a learning process? A study about conflict in youth institutions. [Translated title] Supervisor: Lars B. Ohlsson Assessor: Elizabeth Martinell Barfoed Conflicts are by no means unusual in society today and we were interested in how confl

Peeking under the hood of bacteria Imagine you want to figure out what the different parts of your car do and essentially how important they are for it to function properly. The way to answer these questions could be to remove one part at a time and see what happens. In a similar way, whenever scientists want to better understand bacteria, they have learned different ways or techniques of doing s

Background Nurses constitute a central profession in the cardiac rehabilitation (CR) team delivering comprehensive CR to individuals with cardiovascular disease. We aimed to identify specific components reflecting the nurses' role in the CR team associated with attainment of risk factor targets post myocardial infarction. Methods Center-level data (n = 78) was used from the Perfect-CR study, in wh

The Internet of Things (IoT) paradigm, has opened up the possibility of using the ubiquity of small devices to route information without the necessity of being connected to a Wide Area Network (WAN). Use cases of IoT devices sending updates that are routed and delivered by other IoT devices have been proposed in the literature. In this paper we focus on receivers only interested in the freshest up

Background/introductionFlecainide is a commonly used efficient antiarrhythmic drug against atrial fibrillation (AF). P-wave indices reflect the atrial substrate and can predict incident AF, but their role as predictors of treatment outcomes for flecainide-treated AF patients are unknown.PurposeTo assess if P-wave indices can predict efficacy outcomes in long-term flecainide treated AF patients.Met

Background: Learning is a lifelong process and the workplace is an essential arena for professional learning. Workplace learning is particularly relevant for midwives as essential knowledge and skills are gained through clinical work. A clinical practice known as ‘Collegial Midwifery Assistance’ (CMA), which involves two midwives being present during the active second stage of labour, was found to

Elsparkcyklarna sprider sig, inte bara inom Lund utan över hela jorden. Därför växer även behovet av säkrare och mer hållbara batterier. Batteriets hölje är särskilt kritiskt för att skydda batteriet mot stötar, värme och elektromagnetism. Detta examensarbete fokuserade på just detta hölje och om det är rimligt att 3D-printa det. Genom ett omfattande designprojekt mynnade arbetet slutligen ut i koThe aim of this project was to explore battery enclosures, specifically for e-scooter batteries, and whether additive manufacturing can be used to enhance existing designs. Furthermore, FEM and topology optimization were explored as tools for optimizing these designs. A modified Double Diamond approach was used as a guideline for the project. The modified version enters a prolonged optimization p

Kanarieöarna, en ögrupp i Atlanten som tillhör Spanien och bildades för cirka 25 miljoner år sedan, har en komplex geologisk historia präglad av intensiv magmatisk aktivitet från en underliggande så kallad hotspot. Under hotspoten har extraordinärt varmt mantelmaterial transporterats upp till basen av litosfären som delvis har smält upp. Teneriffa, en av de mest välkända öarna i ögruppen, formadesThe Canary Islands, an archipelago in the Atlantic Ocean belonging to Spain and formed about 25 million years ago, have a complex geological history characterized by intense magmatic activity from an underlying so-called hotspot. Under the hotspot, extraordinarily hot mantle material has been transported up to the base of the lithosphere, which has partially been melted. Tenerife, is one of the be

AimTo analyze the impact of a time-gain selective, first-responder dispatch system on the presence of a shockable initial rhythm (SIR), return of spontaneous circulation (ROSC) and 30-day survival after out-of-hospital cardiac arrest (OHCA).MethodA retrospective observational study comprising OHCA registry data and dispatch data in the Skåne Region, Sweden (2010–2018). Data were categorized accord

Emissions of greenhouse gases in all sectors of society must reach near zero, in developed countries preferably by 2050, in order to reach climate policy objectives. Alternatives and strategies for the energy and transport sectors are relatively well understood but the basic industries are often overlooked, not least in sustainability transition and innovation system studies. The policy and techn

Conventional wastewater treatment plants are designed for treating manmade wastewater (e.g., from households and industries) and to protect the environment (e.g., receiving water bodies) and humans from adverse effects.The objective of this work was to investigate the feasibility of treating municipal wastewater without a biological treatment step by applying different separation processes, such a

The kinetics and mechanism for the overall reaction (i) (X = Cl or Br) have been studied at 25.0 °C using stopped-flow spectrophotometry. 3[AuX4]–+ 7SCN–+ 4H2O → 3[Au(SCN)2]–+ HSO4–+ HCN + 12X–+ 6H+ (i), The reaction takes place in two kinetically well separated steps. The initial, rapid process can be identified as stepwise ligand substitutions (ii) (n= 0–3) which take place via direct ligand disThe kinetics and mechanism for the overall reaction (i) (X = Cl or Br) have been studied at 25.0 °C using stopped-flow spectrophotometry. 3[AuX4]–+ 7SCN–+ 4H2O → 3[Au(SCN)2]–+ HSO4–+ HCN + 12X–+ 6H+ (i) The reaction takes place in two kinetically well separated steps. The initial, rapid process can be identified as stepwise ligand substitutions (ii) (n= 0–3) which take place via direct ligand disp

Context: Alkyl glucosides and alkyl poly-glucosides are widely used as wetting agents, surfactants and emulsifiers in several industrial and cosmetic products. They are known as well-tolerated and are usually added to the primary surfactants in order to reduce the irritating potential of the main foaming agents.Objective: Recently, some authors suggested that allergic contact dermatitis to alkyl g