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Substitution of W for the Mo in M2-type Mo-V-Te-oxide was investigated. XRD, FTIR, XANES, and HRTEM verified that the substitution is possible in the whole range up to complete replacement of Mo by W. Catalytic measurements for propene ammoxidation show that both the specific activity and the selectivity to acrylonitrile pass through a maximum with increase of the W-content of the catalyst. XRD an
A reduction method is proposed for analysing structure-acoustic and poroelastic-acoustic problems within a finite element framework. This includes systems consisting of an acoustic fluid domain coupled to a flexible structural domain and/or a porous sound absorbing material domain. The studied problem is reduced by dividing the system into a number of physical subdomains. A set of basis vectors is
Utveckling och testning av reaktorer för katalysmätningar Katalysatorer är oumbärliga i såväl livsprocesser som industriella tillämpningar. Bilismen är ett exempel där katalysatorer används vid såväl bränsletillverkning som avgasrening. Men detta är långt ifrån det enda användningsområdet. Katalysatorer är också delaktiga i tillverkningen av uppemot 90% av alla kemikalier. Industriella katalysaIn this project four reactors for studies of heterogeneous catalysis have been developed. They were tested using case studies, especially concerning methane oxidation over palladium. The test measurements showed that the reactors work or would work very well after slight modifications. The first reactor allowed for activity measurement using mass spectrometry for temperatures up to at least 1000°C
I svenska kommuner används för tillfället ofta papperskartor som geografiskt hjälpmedel vid fältarbete. En mobil GIS (geografiskt informationssystem)applikation skulle kunna vara ett användbart hjälpmedel vid sådant fältarbete och speciellt för att genomföra fältinventering. I detta examensarbete har en sådan applikation utvecklas. Applikationen har utvecklats för Örebro kommun och kallas iSurvey.Currently, Swedish municipalities generally use paper maps to conduct field work. A Mobile GIS (geographical information system) application could be a useful tool when conducting field work and field inventory work. In this master thesis, such an application has been developed. The application was developed for the municipality in Örebro and is called iSurvey. When developing a mobile application
Popular science Carbon cycle has great importance in all time scales for its inter-connected relation and response with climate system. Increased anthropogenic emission of CO2 is alleged to impact the climate system in the future, which will affect the feedback between carbon cycle and climate change. In this project, a climate-carbon cycle feedback analysis has been conducted by using long simula
The purpose of this master’s thesis was to examine existing augmented reality technologies and develop an application for Windows phone. The goal with the application was to find new ways to use augmented reality technologies together with public transport. The end user would use the application to search for and find new journey options. The development process consisted of four steps – investig
The major problem when developing primers and probe sets for detection of HIV-1 is its high genetic variability and strong ability to mutate. HIV-1 is divided into four groups, M, N, O, P based on genetic similarities, and there are more than 70 different circulating recombinant forms. The aim of this master thesis was to develop new primers and probe for a novel quantitative PCR analysis method f
In this thesis, InGaAs fins with vertical sidewalls consisting of {110} facets were epitaxially grown on InP(111)B substrates using metalorganic vapor phase epitaxy. A lithography patterned hydrogen silsesquixane growth mask was used to promote the formation of vertical {110} facets during the growth. The relative growth rate of the {111B} and {110} facets was controlled by the input V/III ratio i
Two decades after emerging from war and after many years of delay, Bosnia and Herzegovina at last submitted an EU membership application in 2016. There is little doubt, however, that candidate status and accession are still a long way off. Reform process is slow, and the country’s state of democracy is undermined by a variety of factors. To evaluate perspectives for the future, this paper investig
During the past few years the focus on bioprocess monitoring and control has increased. An area still under intensive development is the sampling methods for efficient and rapid analysis during fermentations. In this thesis, an online-sampling and monitoring scheme was developed using the versatile automated continuous flow system (VersAFlo) for recombinant protein production. From the implementat
With modern day interest to continue the reduction of harmful emissions and improve the efficiency of combustion devices, the need to further improve upon accuracy and ability to describe combustive processes is of high value. Nowadays, multiple capable point (0D) and two-dimensional measurement (2D) techniques exist for flame investigation, however as combustion nearly always is a three-dimension
The accuracy and portability of depth cameras have increased by a lot in recent years, which allows for advanced 3D scanning of the environment for robotic applications. In this thesis we have developed a system that uses a depth camera mounted on a robot arm to identify and localize arbitrary objects, and give hints on how to move the camera to get better localization results. The system works by
Solar radiation is affected in a variety of different ways through the atmosphere and on its way down to the Earth’s surface. Clouds are the main factor in this attenuation of solar radiation, but aerosols, ozone and other different gases have a significant impact too. Understanding these processes is fundamental to solar forecasting. However, the atmosphere is constantly changing, which makes for
The accuracy and portability of depth cameras have increased by a lot in recent years, which allows for advanced 3D scanning of the environment for robotic applications. In this thesis we have developed a system that uses a depth camera mounted on a robot arm to identify and localize arbitrary objects, and give hints on how to move the camera to get better localization results. The system works by
This Master thesis work was performed in Ericsson AB, Lund. It studies and validates two classes of algorithms to be used in mm-wave massive MIMO antenna arrays, for their use in the future 5G mobile communication systems. The first class of algorithms relates to the calibration of the transceiver (TRX) chains responses of the antenna array and makes use of the antenna array mutual coupling, which
Although nanoparticles (NPs) are very small, their field in science is currently growing very large. There are several biological, medical and technical applications possible for NPs when bound to proteins. Protein-NP interactions are difficult to predict and therefore a lot of fundamental research is yet to be completed. This study is an attempt to contribute with the aim to explore the interacti
I den här studien blir det kastat ljus på de mediepolitiska avtalen i Danmark och hur det kulturella ramverket för public service-mediet DR blir ändrat mellan dessa. Vi går från ett brett avtal till ett smalt, från allt till nischat och från multikultur till monokultur. Som titeln "Maktkampen om public service - ett DR drama i två episoder" antyder så kan det skönjas en ideologisk kamp m
Several governments recently adopted strategies to facilitate the development of artificial intelligence (AI), one of the reasons being the pursuit of sustainability – a claim with little scientific grounding so far. In this thesis, I strived to outline the scope of AI’s potentials by showing i) the limits of its theoretical and practical usefulness and ii) the political barriers to using it for s
