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Background. Histidine-tryptophan-ketoglutarate (HTK) has been established as an alternative to University-of-Wisconsin solution (UWS) for abdominal organ preservation, but data about HTK efficiency to preserve pancreata during prolonged cold ischemia time (CIT) are conflicting. In human islet transplantation, HTK provided similar isolation outcomes after short CIT. The present study aimed to inves
There is currently a strongly growing interest in obtaining optimal control solutions for vehicle manoeuvres, both in order to understand optimal vehicle behaviour and, perhaps more importantly, to devise improved safety systems, either by direct deployment of the solutions or by including mimicked driving techniques of professional drivers. However, it is non-trivial to find the right combination
The article departs from an overarching research question: How does young people's engagement in different Internet spaces affect the development of their public orientation during adolescence? It analyses longitudinal panel data in order to explore how young people's public orientation develops during a phase in life (13–20) which is critical for political socialization. Data are derived from thr
Flow injection analysis provides a convenient platform for the use of biosensors in the monitoring of bio-processes. A major requirement in bioprocess monitoring is real time information about various process parameters like concentration of products and substrates, flow rates, and injection volumes. Depending on the application, the monitoring requirements vary and this results in a need for diff
Evaluation of Specific Absorption Rate (SAR) for multiple antenna systems is becoming important, with the upcoming deployment of LTE-Advanced. In this work, the influence of different antenna locations and antenna types was investigated for stand-alone SAR and simultaneous SAR, to provide some guidelines for antenna design in multi-antenna handsets. For simultaneous SAR, different phase shifts bet
Despite decades of intensive research, to date, there is no accepted diagnosis for Parkinson's disease (PD) based on biochemical analysis of blood or CSF. However, neurodegeneration in the brains of PD patients begins several years before the manifestation of the clinical symptoms, pointing to serious flaw/limitations in this approach.
Bakgrund: Stroke kan medföra fysiska, psykiska och kognitiva komplikationer med både kortsiktiga och långsiktiga funktionsnedsättningar. Det finns därför ett behov av omvårdnadsåtgärder som främjar delaktighet hos dessa patienter. Syfte: Beskriva omvårdnadsåtgärder som främjar delaktighet för patienter med stroke inom somatisk slutenvård. Metod: En litteraturstudie med en icke-systematisk strukt
This thesis work aims to find a suitable environment for different virtualization system to achieve enhanced performance. Virtualization plays a vital role in cloud services, and it is essential to help cloud users comprehend the brief distinction between different virtualization technologies. The hypervisor-based technology has been used as the primary selection for cloud services in the past, bu
Control theory plays a big part in the development of more efficient and environ- mental friendly combustion engines. But the process of designing good controllers can be very time consuming and complex. One way to reduce the time spent on design and testing of a controller is to use simulations to get fast feedback of the controllers performance. Therefore, in this thesis it is investigated if a
Behandling av avloppsvatten för att avlägsna ämnen som kan ha en negativ påverkan på den mänskliga hälsan och naturen är mycket viktigt innan vattnet återanvänds eller släpps ut i naturen. Intresset för anaerob vattenrening har ökat eftersom det är ett bra komplement till aeroba processer, samt för att det producerar energi i form av metangas. Målet med detta projekt var att undersöka hur olika dTreatment of wastewater is crucial for removing any compounds which can have a negative impact on human health and nature before the water is reused or released into nature. Interest in anaerobic treatment of wastewater has increased as it is a good complement to aerobic treatment, and it produces energy in form of methane. The aim of this project was to investigate how different operational para
The high surface-to-volume ratio of nanoparticles (NPs) makes them an interesting source for scientific research. How interfacial energies interplay between such a small structure and a solid bulk surface, are important because of the versatile applications NPs regard. In this thesis, a convenient and reliable method for interfacial energy determination was investigated. The interfacial energies
Sammanfattning Examensarbetets titel: Facebook, en plattform för socialt nätverkande eller ett skyltfönster åt företag? - En kvalitativ studie om konsumenters upplevelser av annonser på sociala nätverkstjänster Författare: Fredrik Andersson, Johan Karlsson, Ellinor Åkerman Handledare: Clara Gustafsson Syfte: Syftet med den här uppsatsen är att undersöka hur konsumenter hanterar de annonser so
In Sweden there are currently no cohesive and unequivocal regulations regarding fire safety for upholstered furniture. In contrast to this the regulations regarding fire safety on vessels are very clear-cut and easy to interpret. The aim of this thesis is to investigate whether the current standards are sufficient, and if it sufficient to only impose requirements regarding flammability. Whether it
Det Svenska flerbostadshusbeståndet från åren 1945-1975 är på väg att nå slutet på sin tekniska livslängd. Byggnaderna från denna tidsperiod är i stort behov av renovering samt energieffektiviserande åtgärder för att minska energianvändningen och möjliggöra fortsatt användning av byggnaderna i framtiden, samtidigt som ekonomiskt utsatta personer har råd att bo kvar i byggnaderna. Dagens utmaning äThe Swedish apartment building stock from 1945-1975 is reaching the end of its technical life span. Renovations and energy efficiency measures are needed to reduce energy use and enable continued usage of the buildings in the future and still provide affordable housing to socioeconomic vulnerable groups. The problem today is that some building features, which are needed to estimate the renovation
Lysosomes are cell organelles in charge of degradation. Lysosomal membrane permeabilization (LMP) causes the leakage of cathepsins and other digestive enzymes into the cytosol from lysosomal cavities. This usually causes the initiation of cell death. LMP can be triggered by many stimuli and this could potentially be used in new therapeutic approaches for removing cancer cells. However, excessive L
Sammanfattning Jordens befolkning förväntas öka de kommande årtiondena. Detta kan skapa osäkerhet kring livsmedelsförsörjning och kräver en mer produktiv livsmedelssektor samt metoder för att bedöma tillgång på livsmedel i förhållande till efterfrågan. Utvecklandet av lågkostnadsmetoder för övervakning av grödor kan stödja en hållbar intensifiering av jordbruket och tillhandahålla användbar inforAbstract The population of earth is projected to increase the coming decades. This can pose problems of food security and demands a more productive food sector as well as methods of assessing food productivity in relation to demand. Crop monitoring with remote sensing can guide precision farming used for sustainable intensification of agriculture, as well as contribute to yield forecasting models
The European Spallation Source will be a world leading neutron source available for a range of neutron scattering experiments in the scientific community. In order to accurately simulate the production of cold and thermal neutrons, an accurate calculation of the neutron cross section for the moderator materials is needed. The neutron cross sections used in the current simulation models for the liq
In the current development of coherent optical communication systems, nonlinear noise is considered to be the ultimate bottleneck when extending the transmission length. In this report we suggest a nonparamter digital signal processing scheme to extend the transmission length of a fiber link. The processing scheme was enabled by machine learning, implemented to compensate nonlinear noise in a comm
We propose a variable selection method for estimating decision rules of optimal sequential treatment assignments when the decision-relevant variables are unknown. Standard variable selection methods are insufficient in this setting since they choose covariates that are predictive of the outcome, not those that interact with the treatment on the outcome and are therefore relevant for decision-makin
