Filtyp
In peritoneal dialysis ultrapure water used is produced from tap water by using several filter cartridges in series. One of the cartridges is an ion exchange filter removing cations and anions by either reverse osmosis membrane or chemical ion exchange resin. The ion exchange filter that is investigated in this thesis is a chemical ion exchange filter. The current chemical ion exchange system has
The core objective of this project was to design a controller for a drone (or quadcopter) that would allow the drone to keep a target in the center of a video filmed by a camera mounted on the drone. This was done by controlling the pitch of the gimbal, on which the camera was placed, and the yaw of the entire drone combined with using an image recognition program that could identify the target. F
Materialegenskaper som hållfasthet och duktilitet har historiskt förbättrats genom att materialet modifieras homogent, men även kompositer har vuxit fram som ett vanligt verktyg inom industrin som sätt att förbättra materialegenskaper. En alternativ metod som bygger på att materialets mikrostruktur modifieras heterogent, är harmoniskt strukturerade material. Det består av två olika moder av materMaterials are constantly sought to be improved in different manners. Two of the most common characteristics to improve are strength, and ductility. Historically, materials are modified homogeneously to achieve improvement, while the past century has also seen composite materials becoming standard-issue within various industries. Just recently the concept of heterogeneously modifying material micr
The pentadentate ligand 2-(pyridine-2-yl)-N,N-bis(pyridine-2-ylmethyl)quinoline-8-amine was isolated and characterized. Mononuclear iron(II) complexes of the ligand have been synthesized and characterized. Three iron complexes, [Fe(CH3CN)L1][OTf2], [Fe(OTf)L1] and [Fe(Cl)L1][Cl6Fe2O] (L1 = 2-(pyridine-2-yl)-N,N-bis(pyridine-2-ylmethyl)quinoline-8-amine) (OTf = triflate, trifluoromethane sulfonate)
The main purpose of this thesis is to increase the understanding of how hydrogeological conditions are affecting the local water resources in Carrizal on the Barva Volcano, Costa Rica. Hydrogeological investigations of spring characteristics, soil infiltration rates and water flow in springs and rivers were conducted at the study area in Costa Rica as part of a Minor Field Study (MFS). A statistic
The goal of the thesis is to create a method that can be used to smooth data functions so that they are more easily readable and interpretable, through curve fitting. So as to do that, we adapt the smoothing spline method, which uses discrete data, to continuous data.
Mass Spectrometry- based proteomics has matured to an analytical tool applicable in many areas of life science. Although, limitations remains where much focus has been towards the development of search engines to more accurately identify peptides in fragmentation spectra. This report aims to investigate four search engines; MSGF+, Andromeda, MSFragger and pFind in order to assess the advantages an
Fibrosis is a process characterized by the accumulation of extracellular matrix components and is attributed to excessive scar formation and is a common feature of many chronic inflammatory conditions. Fibrogenesis involves multiple inflammatory cells including NKT cells, which have been suggested to play a prominent role in the control of this process. Here we characterize a transgenic mouse mode
Plant-insect interactions play a crucial role in the evolution of the coevolving web of life, shaping local interaction networks and moulding the diversity and the evolutionary history of two of the most diverse groups of organisms on earth. The interaction between Lithophragma bolanderi (Saxifragaceae), which presents a geographic mosaic of ploidy levels, and the pollinating floral parasite Greya
This study compares the performance of equal- and value-weighted portfolios using a broad investment universe consisting of the stocks from the Swedish stock market. While implementing random sampling in the portfolio construction procedure, three rebalancing schemes are applied on the equally weighted portfolio in order to observe differences in performance among these. In order to compare how mu
Attosecond pulses obtained via high harmonic generation often suffer from chromatic aberration. This is inherent from the generation process as a consequence of the spatial profile of the driving laser pulses. Consequently, the focus positions and divergences of consecutive harmonics vary, leading to chromatic aberration which prevents high-quality refocusing as is critically required for applicat
Several findings show that dark matter makes up 27% of the universe. The goals of this thesis are to understand some of the most important evidences and candidates for dark matter, as well as how dark matter is searched for. The ATLAS and LDMX experiments are reviewed to give a greater insight into the search for dark matter. Two papers from ATLAS are studied more carefully and the data from these
It is known that consumption of high fat diet may lead to gut dysbiosis and increase intestinal permeability by altering gut microbiota composition. However, metabolites from dietary fiber fermentation, short chain fatty acids (SCFAs) may prevent these changes. SCFAs are of great importance in maintaining colonic integrity, and exerting anti-inflammatory function as signaling molecules. The presen
Inclusive innovation is seen as a means to counteract the issue of growing global inequality. Particularly universities and private businesses are engaged with its promotion. However, the concept of inclusive innovation has deficiencies concerning the operationalisation and measurement. In default of extensive primary data, a set of a hundred and two inclusive innovations has been gathered from tw
This study analyzes the relationship between education, antibiotic consumption and antibiotic resistance in the European ambulatory care. For this purpose, a panel data analysis is conducted on an aggregate level in a sample of 30 countries in the European Economic Area between 2000 and 2014. The main variable of interest is the level of high education, expressed as the proportion of the total pop
Wireless communication nowadays is playing a vital role in real-life data transmission. This communication can be machine-to-machine or human to machine communication. In each of these categories, reliability and low latency data transmission are critical factors of success transmission in case the number of devices in a certain area increases. In this thesis, I mainly investigate on smart manufac
Traditionally Bhutanese buildings are built with rammed earth. These buildings have low insulation values and lack thermal comfort resulting in sub-zero temperatures inside the homes in colder regions. Modern insulation materials in Bhutan are uncommon due to the lacking availability, and therefore, a local source of insulation material is needed to improve the living conditions. The worldwide use
In Reinforcement learning the updating of the value functions determines the information spreading across the state/state-action space which condenses the valuebased control policy. It is important to have an information propagation across the value domain in a manner that is effective. Two common ways to update the value function is Monte-Carlo updating and temporal difference updating. They are
