Sökresultat

The industry of engineered nanoparticles (ENPs) has grown rapidly during the last decade, with for example carbon nanotubes (CNTs) incorporated in high-tech composites and nanosized TiO2 in sunscreens and paint. With an increased potential of human exposure to these novel ENPs, especially during production and handling of nanoparticles, the concern of risks when people become exposed has increased

In a society where information is increasingly available through digital means, the performance of Swedish students is at a decline. The amount of students with access to their own computer and the internet is higher than any generation before them. Even though the amount of digital teaching tools increase rapidly many still lack the necessary quality to replace traditional teaching tools. An atte

Nowadays, multiple antennas are becoming widely used in small mobile terminals as they can significantly improve wireless communication performance in terms of link reliability and spectral efficiency. Also, pattern reconfiguration is another new trend for antenna design as it enables the antennas to adapt to different propagation and user scenarios. However, due to the limited space in the termin

Människan har sedan urminnes tider tittat upp mot himlen och försökt lista ut vår plats i Universum. Vi har kommit långt fram sedan tiderna man kartlade stjärnors positioner för hand, till att använda superdatorer till att simulera kosmisk historia. Just nu befinner vi oss i en era där stora resurser läggs ner på att studera vårt hem, vår galax, Vintergatan, i mycket större detalj än förr. En av dI investigate to what extent spiral arms might affect axisymmetric Galactic models. As we need fully dynamical and high resolution Galactic evolutionary models to probe the structure of the dark matter halo, it is important that we use accurate mass models describing the MW structure. Before reaching to that level of effort, a great deal can be learned from fitting mass and kinematic models to dat

Skogsbruket är viktigt för svenskt näringsliv och står för ungefär 20 % av Sveriges totala export. Efterfrågan på virke blir därmed stor vilket resulterar i att avverkning sker ständigt, året om, på all typ av mark under alla olika sorters väderförhållanden. Ett stort problem inom skogsbruket är de markskador som ofta uppstår efter en slutförd avverkning. Markskador ändrar markens textur och egensForestry is important for Swedish industry and accounts for 20% of Sweden’s total export. The endless demand of wood results in logging all year round, but other aspects have to be taken into consideration. The ecology, forest recreation and the outdoor activities that the forest is providing is very important to preserve. A major problem in forestry is the soil damage after a successful harvest.

In the European Union’s (EU) Emissions Trading Scheme (ETS), free allocation of emissions allowances to avoid carbon leakage has resulted in a distorted pricing signal and a failure to reduce emissions in the most polluting industries. A Border Carbon Adjustment (BCA), a mechanism which would apply a tariff to imported goods based on their embedded carbon content, has been suggested as a solution.

Kryoelektronik är av allt större intresse inom många tillämpningar, exempelvis för utveckling av kvantdatorer. Detta arbete vill därför undersöka de effekter kryogeniska temperaturer (under 10 K) har på halvledarkomponenter och deras elektriska egenskaper. Särskilt intressant är effekten på subthreshold swing (SS). Normalt sätts SS teoretiska minimum av Boltzmanngränsen, som är linjär i temperaturCryoelectronics are of increasing interest to many applications, including the emerging field of quantum computing. Therefore, this thesis seeks to examine the effects of cryogenic temperatures (below 10 K) on semiconductor devices and their electrical properties. Especially of interest is the effect on subthreshold swing SS. Normally, the theoretical minimum of SS is set by the Boltzmann limit, w

Because of climate change, rising sea levels in Kristianstad Municipality is more urgent than ever. Sea levels around Scania are estimated to rise more than 2,5 meters in 80 years considering that they are currently rising with 3,2 mm per year. This can lead to erosion and more frequent floods, which in turn can alter beach areas and nearby housing. Kristianstad has an excessive risk of being affe

Den digital utveckling påverkar ständigt världsekonomin och ordet PropTech blivit ett världsomspännande fenomen. Digitaliseringen påverkar alla led inom fastighetsbranschen från hyresgäst till investerare och ägare. Detta genom att effektivisera och utveckla befintliga processer och lösningar. Fastighetsmarknaden har den senaste tiden haft en historiskt god utveckling vilket har gjort att digitaliDigital development is constantly affecting the world economy and the word PropTech has become a worldwide phenomenon. Digitization affects all aspects of the real estate industry from tenant to investor and owner by increased efficiency and renewing existing processes and solutions. The real estate market has recently had a historically good growth, which has amount to that the digitalization of

Denna uppsats undersöker budplikten på den svenska aktiemarknaden ur ett rättsekonomiskt perspektiv. Syftet är dels att undersöka om de svenska budpliktsreglerna tillämpas syftesenligt, dels om budplikten är lämplig på den svenska aktiemarknaden ur ett ekonomiskt perspektiv, vilket kompletteras med en argumentation de lege ferenda. Rättsekonomisk litteratur om offentliga uppköpserbjudanden presenThis thesis examines the Swedish mandatory bid rule from a law and economics perspective. The purpose is to study whether or not the rule is applied in a way that satisfies its purposes, and if it is suitable for the Swedish market, which is complemented by an argumentation de lege ferenda. Law and economics literature on takeovers is reviewed to serve as perspective for the thesis. The question

Denna uppsats undersöker blockkedjeteknologin utifrån dataskyddsförordningen (GDPR). Fokusområdet är skydd av personuppgifter på blockkedjor. Blockkedjeteknologin kan sammanfattas som en delad, distribuerad liggare där information endast kan läggas till, inte tas bort. Tekniken är ett sätt att skapa tillit, och har i förlängningen potentialen att ta bort behovet av mellanhänder. Från ett juridiskThis thesis examines the blockchain technology from a General Data Protection Regulation (GDPR) point of view. The focus area is the protection of personal data in blockchains. Blockchain can be summarized as a shared, decentralized ledger where data can only be added, not removed. In essence, it works like a trust-creator that has the potential to remove the need for middlemen. From a legal pers

Genom att utvärdera Skochparametern och skapa tre konceptkompressorer har examensarbetet försökt komma till en slutsats om hur bladens längdförhållande påverkar en kompressors verkningsgrad och stabilitet. Skochparametern visade sig fungera mindre bra som ett verktyg och det visade sig att ett lägre längdförhållande innebar en liten minsking i verkningsgrad, men en betydande ökning i stabilitet. The design of an axial compressor is mainly the trade-off between efficiency, stability and cost. A parameter that affects all of these three aspects is the blade aspect ratio. Due to the intricacy and complexity of the flow in a compressor, solely the effect of the blade aspect ratio variation is difficult to obtain. A parameter that supposedly is a gauge of the combined airfoil and end wall loa

According to the United Nations, half of humanity now lives in cities. In recent years, many countries have seen a rise in the number of and intensity of heavy rainfall events due to the effects of climate change. The consequences of urban flooding in such a context can vary between just causing mild discomfort to tremendous devastation. Building cities that can resist flood is quickly becoming an

The aim of this master thesis was to produce meatballs with different characteristics and from these, find the meatball that oxidized the most. For the production, minced meat with different concentrations of salt and fat from both beef and pork was used. Half of the meatballs were pan-fried and the other half was deep fat fried. Additionally, three different storage times were applied. The meatba

Tunisia is where all hope and rebellion started. After the self-immolation of Mohamed Bouazizi in 2010, the Jasmine Revolution spread to other Arab countries leading to the famous Arab Spring. Tunisia is depicted as the model of democratic transition in the Arab region and in the West. Transitional justice mechanisms have been implemented in the country, notably a Truth and Dignity Commission aimi

Clarifying the mechanisms maintaining atrial activity during atrial fibrillation (AF), still remains as a relevant topic. The purpose of this master thesis is to apply correlation analysis and system identification methods to study spatial and temporal propagation of atrial activation along coronary sinus (situated in the posterior left part of the heart, in the groove between left atrium and left

Unlocking the hidden connection: How asthma gets into your head Have you ever wondered if asthma, a common lung condition, could have effects beyond just your breathing? Recent scientific studies are revealing a fascinating connection between asthma and the brain, bringing to light an unexpected link that has puzzled researchers for years. Asthma is an allergic disease characterized by lung inf

I detta examensarbete görs en utvärdering av ankomstprognoser för tåg för att se hur de olika prediktionskällorna står sig mot varandra och hur pass väl dessa efterspeglar verkligheten. Vidare är detta examensarbete en sprint av ett forskningsprojekt som genomförs och bedrivs på Lunds Tekniska Högskola på uppdrag av Trafikverket. Till skillnad från forskningsprojektet bygger detta examensarbetIn this master thesis, an evaluation of arrival forecasts for trains is made to see how various prediction sources compare to each other and how well these reflect reality. Furthermore, this thesis is a sprint of a research project that is carried out and conducted at Lund University of Technology on behalf of the Swedish Transport Administration. Unlike the research project, this thesis is based