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Streptococcus pyogenes, or group A streptococci (GAS) is a well known agent of pharyngitis. The same goes for the closely related S. dysgalactiae subspecies equisimilis (SDSE). Recent data indicates that a third pathogen called Fusobacterium necrophorum, with similarly severe complications to GAS is the second most common pathogen in pharyngitis. These infections cause the greatest damage in low
Introduction: The forest industry might not be the first thing to come to mind when thinking of chemistry, but the analysis of cooking chemicals in wood pulping involves many laboratory methods. Background: The chemical recovery cycle is an integral part of the Kraft process, which makes laboratory analyses of different steps of the process necessary. In the recovery boiler, sulfur is reduced to
Simulating vehicle scenarios for autonomous cars saves both time and money compared to physical testing. For this to work efficiently a sophisticated simulation software is often needed. Esmini is an open-source, lightweight vehicle simulator that can handle advanced traffic scenarios. When designing scenarios to be used for testing autonomous vehicles, it is often beneficial to set up relative ve
Pediatric leukemias are one of the most common types of cancer diagnosed in children. Acute lymphoblastic leukemia (ALL) is the most common form of leukemia in children, and acute myeloid leukemia (AML) is the second most reoccurring type of leukemia in pediatric diagnosis. It has previously been found that structural variations are an important underlying mechanism leading to these diseases. Fluo
Fluid overload is the build up of excessive fluid in the body and is a common condition amongst chronic heart failure patients. Fluid overload is treated with diuretics but the level of excessive fluid can vary. To match the fluctuations a flexible diuretics regime may be prescribed where patients are instructed to temporarily increase the dosage upon onset or worsening of fluid overload. In this
Provision of freshwater to urban residents remains a significant global challenge. A challenge whose impendent success in many regions is further threatened by climate change and urbanization projections, subsequently increasing the pressure on urban water supply. Employing an intersectional lens, this case study explores household implications of and responses to water shortage in Gaborone, the c
We have constructed a novel neural network architecture called CWE-LSTM (concatenated word-emoji bidirectional long short-term memory) for classify- ing emotions in Twitter conversations. The architecture is based on a combina- tion of word and emoji embeddings with domain specificity in Twitter data. Its performance is compared to a current state of the art natural language process- ing model fro
This study aims to discourage error-prone intuitive thinking in decision-making for proactive adaptation to disaster risk and climate change and to encourage the realisation of well-founded proactive adaptation measures by developing a decision support tool for Swedish municipal preparedness coordinators. Using a design research methodology, the researchers interviewed preparedness coordinators fr
In 2012, the Greater Mekong Sub-region (GMS), an initiative launched by the Asian Development Bank (ADB) to promote regional integration and development between six mainland Southeast Asian countries, will reach its twentieth anniversary. Throughout the past twenty years, the GMS has been considered as highly successful, in comparison with other regional initiatives, in improving connectivity, com
Power grids worldwide are expanding not only driven by ambitious clean energy, but also because of the rising need for reliable energy. Key components of these power grids are transformers. Transformers are traditionally filled with mineral oil, to serve as a coolant and dielectric insulator. Now globally a rising trend is observed towards the adoption of less flammable, biodegradable transformer
Popular Science Summary Konsten att kunna ta bort ett syre Alla celler har DNA, som måste repareras och kopieras för att livet ska fortgå. För att kunna göra detta måste det finnas byggstenar. En av alla processer som ser till att alla delar finns i rätt mängd innefattar bara ett protein. Ett protein som får instruktioner från många håll för att gå igenom en komplicerad process som tillverkar dessThe protein ribonucleotide reductase catalyses the de novo synthesis of deoxyribonucleotides (dNTPs) from ribonucleotides (NTPs), using radical chemistry. It is under strict allosteric regulation, partly from the dNTPs it synthesises that regulate what substrate should be synthesised, but also from dATP/ATP, which regulates overall activity. It is a protein that is found in almost every living org
Cardiac magnetic resonance (CMR) images are used to investigate the heart for medical and research purposes. By injecting a contrast substance into the patient, myocardial infarctions (heart attacks) can be visualized in CMR image sets consisting of a number of image slices at different levels of the heart. Analysis of these images can detect an infarction, delineate it and estimate its size. This
Populärvetenskaplig sammanfattning Spektroskopi handlar om teoretiska modeller och experiment där man observerar ljus som har växelverkat med materia. Spektroskopiska metoder används inom många olika ämnesområden som exempelvis kemi, fysik och biologi. Ett jordnära exempel på tillämpad spektroskopi är människans öga. Reflekterat ljus från olika föremål samlas in av linsen i ögat, avbildas på näthiIn this thesis a novel spectroscopic method consisting of a combination of frequency domain photon migration (FPDM) and gas in scattering media absorption spectroscopy (GASMAS) is developed, for assessment of the mean optical path length and gas absorption in porous media. The system stability is experimentally investigated and measurements are performed on balsa and pine wood to evaluate the rela
This paper describes the participatory process of developing and implementing a prototype model aimed at supporting the Integrated Sustainability Assessment of water resources and policy options at different scales. The model - called the World Cellular Model (WCM) focuses on the representation of agents’ behaviours and their systemic relationships with their environment. This is achieved by exami
This thesis deals with the methodological advances of diagnostic PCR including reliability of PCR and pre-PCR processing of food and feed samples. Diagnostic PCR has been greatly improved by the introduction of the second generation of PCR, so-called real-time PCR. Automated closed-tube quantitative real-time PCR favours the analysis of food-borne pathogenic bacteria. However, in common with conve
GHRS observations of chemically peculiar stars have initiated a new project for calculating atomic properties of heavy elements (Z approximate to 80). The method used is based on large-scale, fully relativistic MCDF, and the data involve accurate gf-values, hyperfine structure parameters, and relative isotope shifts.
This thesis presents a study of advanced analytical techniques, for the characterization of actinide particles originating from the non-peaceful use of nuclear technology and from international inspections of the nuclear fuel cycle associated with non-proliferation agreements. The thesis is based on five papers, which will be referred to by Paper I-V in the text. Individual particle analysis has s
The paper analyses some properties that are obtained when using load current measurements to control DC-DC power converters. The analysis is made for the buck, boost, and buck-boost converters with current mode control. The two major properties obtained are low output impedance and an almost invariant control-to-output transfer function for different loads. It is shown that the use of the load cur
Glass sheets investigated regarding their Po-210 signal originating from indoor radon exposure will have a depth distribution down to about 100 nm. The geometrical probability of implantation into glass of glass-attached radon daughter activity in one alpha recoil event is 50%. A particulate layer on the glass sheet (dust, grease or other particles) will stop the alpha recoil nucleus partly or tot
