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A rather hot subject in today’s society is global warming. Both technical progresses and global agreements between nations are much needed to counter this ever growing world problem. In this report a novel CO2-capture system, using the sterically hindered amine 2-amino-2-methyl-1-propanol (AMP) and N-methyl-2-pyrrolidone (NMP) as an organic solvent, is investigated by process simulation in the sof
Hemoglobin (Hb) is a protein, composed of a heme prosthetic group with an iron atom in the center of the protoporphyrin ring and the iron is the main component that bind oxygen. Hb was first found in the red blood cells of vertebrates and after in prokaryotes, fungi, plants and animals. In plants, there are three main groups of Hb proteins which are symbiotic, non-symbiotic and truncated. Non-symb
As temperatures on Earth are rising, the Polar regions experience most rapid climatic changes. In the Swedish Scandes, the alpine tree line is considered as one of the most sensitive indicators of climate change. Therefore, the aim of this study is to study the most important abiotic factors driving position change of the alpine tree line. Through a literature study, these mechanisms were studied
Tidigare forskning visar att distansstudier vid högskolor och universitet har blivit allt vanligare. Den tidigare forskningen visar även att denna form av studier är vanligare hos individer från ett arbetarklasshem samt hos individer med föräldrar/vårdnadshavare som saknar högre studier. Syftet med denna studie var att utöka kunskapen kring distansstudier som en möjlighet till social rörlighet.
This research report was carried out in collaboration with Qlik AB and aimed to identify what aspects are needed from a software platform in order for developers to want to use them. It also aimed to identify how well the software platform Qlik Core had implemented these aspects. The research used online questionnaires, interviews and data analysis using Qlik Sense. The research compared how diffe
It has for long been known that dark matter must exist in our universe. Despite massive efforts to detect dark matter, its constituents remain a mystery. One strategy to unveil this mystery is to produce dark matter by colliding Standard Model particles. The most common signature of dark matter production is an excess of missing transverse energy, MET. Such an event would be very rare, which is wh
Elsparkcykel har blivit ett populärt fenomen i Sverige där flera företag erbjuder uthyrning av detta transportmedel. Vid studiens tidpunkt kunde konstateras att få hade studerat fenomenet och vad användarna ansåg vara av värde med elsparkcykeln, det fanns därmed ett kunskapsgap inom området. Syftet med denna studie blev därför att öka förståelsen för vad användarna ansåg vara av värde med användan
Eutrophication of aquatic environments is a worldwide problem which is usually caused by leakage of nutrients from human activities on land. The primary production rises greatly when concentrations of phosphor and nitrogen increases, which can result in disturbances in the ecosystems. The aim of this project was to analyse the content of total-phosphor and total-nitrogen in different flow rates in
This master thesis work concerns the effect of high-alumina additives on the selfdesication of concrete. The purpose of the work was to examine the possibilities to optimize the binder-content of concrete with regards to self-desiccation. Two highalumina additives have been examined. In the experiments 10% of the binder mass has been replaced with one of these additives. Commercially available ceme
This paper evaluates the profitability of adding green bonds to a portfolio consisting of stocks and conventional bonds. To determine the profitability, ten portfolios with varying weights on green bonds, conventional bonds and stocks, are constructed. The risk-adjusted returns on the portfolios are implemented in time series regressions of several asset pricing models, including the Capital Asset
The many advantageous abilities of plastics have made them omnipresent in today’s society. However, the low cost of production, light weight, durability and insolubility in water combined with inadequate waste handling have led to a vast and increasing accumulation of plastics in nature, approximated to be over 6 300 million tons (Geyer, Jambeck and Law, 2017, ‘Production, use, and fate of all pla
The objective of this thesis was to investigate how double skin facades (DSFs) meet daylight and energy requirements compared to single skin facades (SSFs), also considering the life cycle costing (LLC) of both solutions. A South facing, an unobstructed glazed office building in Sweden was used as a basic building object, where SSFs and DSFs were iteratively applied. A mid-level floor was chosen a
Digital media and social media are by now established platforms for daily online social interaction, expression and debate, also in the political field. They offer users a space to voice and exchange opinions, as well as a tool to organise political acts of protest or support around offline world events. And they are changing the game of politics in remarkable ways. Political institutions such as
In many cities around the world, the financial crisis 2007 served as an opportunity both for grassroots movements and governments to rethink existing models of urban development. Some authors have pointed out that the crisis served to elevate discourses for progressive post-neoliberal urban transformations. Other, more sceptical accounts have pointed at the shift towards participative, networked g
Three different classification solutions for distinguishing events from non-events in surveillance audio are described and evaluated. The three compared methods are energy functions, Gaussian mixture modelling algorithms (GMM) and existing voice activity detectors (VAD). Recorded test signals with corresponding manually labelled ground truth files are used to determine the accuracies of the method
In this thesis we propose a new form of Variational Autoencoder called the Conditional Latent Space Variational Autoencoder or CL-VAE. By conditioning on a known label in a dataset we can decide what points are being mapped to what prior distribution. This makes the latent space more understandable and separates the classes further. It also subverts the tug-of-war effect between reconstruction los
This paper aims to look at the positive and negative aspects of the biodegradable material poly(lactic) acid (PLA) compared to controversial plastics. This is done through a literature study. PLA is a biobased and biodegradable plastic that are used in for example medicine and packaging materials around the world. The results from this study show that the biodegradation of the material is not that
In the context of continuous biodiversity loss connected to land-use changes and urban development, different methods such as biodiversity offsetting with the underlying aim of achieving “No Net Loss” (NNL) of biodiversity has been proposed. Compensation according to the mitigation hierarchy is one type of biodiversity offsetting which currently is being used in the municipality of Helsingborg, Sw
Detta examensarbete ämnar att undersöka om och hur man skulle bygga en modell för att kunna beräkna utsläppen av växthusgaser vid förändringar av transmissionskapacitet. Arbetet avhandlar hur det nuvarande elsystemet är uppbyggt och påverkan på utsläppen av växthusgaser ifrån ökad produktion av förnyelsebar elproduktion och ökad transmission av elektricitet. Utifrån att studera vind- och lastdataIn the light of the importance of climate change and the emissions that have induced it, the ability to calculate the effect on emissions by changing transmission capacity is vital. A model to perform such indicative calculations is developed in this thesis. After researching how the current electricity system is organised, the effects on GHG emissions that are expected from increased renewable el
Yearly in Sweden, large quantities of material lose much of their monetary value due to poor material recycling efficiency. In the common linear economy, material recycling is not prioritized, however within a circular economy recycling is a vital part. PolyPlank has with their own polyplank material built their company based on the principles of the circular economy. Their polyplank material is a
