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This thesis focuses on ignition of diisopropyl ketone (DIPK), a new biofuel candidate that is produced by endophytic conversion. The ignition delay times behind reflected shockwaves were modeled in a high-pressure shock tube. The ignition delay times were compared to other biofuels and gasoline surrogates. Parametric studies of the ignition delay experiments were performed between 1-10 atm and 900 -1200K. An OH optical sensor was developed in conjunction for the ignition delay experiments. The OH optical sensor uses a microwave discharge lamp to generate light at 308 nm that will then be shined through the combustion reaction. Using Beer-Lambert law the concentration of OH can be obtained during ignition and oxidation of hydrocarbon fuels in a shock tube. DIPK ignition delay time experiments are planned in two shock tubes (located at UCF and UF) to provide ignition and OH time-histories data for model validation.

This thesis aims to analyze how low-income communities in Cali, Colombia, responded to the pressures and constraints of the COVID-19 pandemic crisis of 2020 and 2021. The emergency measures that the Colombian government implemented to contain the spread of the COVID-19 virus, such as lockdowns and quarantines, as well as the increase on violence from state actors and illegal armed organizations during the summer of 2021, put unprecedented pressures and constraints upon low-income communities in Cali. For this reason, this thesis investigates how civil society groups in low-income communities in the Highlands and in the Agua Blanca District in Cali organized and mobilized during the pandemic crisis to respond to these challenges. This thesis uses ethnographic methods to explore how low-income communities in Cali engaged in processes of social mobilization during the pandemic crisis, giving special attention to the neighbourhoods of Polvorines, Pampas del Mirador, Alto Jordan, and Potrero Grande. This thesis also investigates particular forms of social organization that low-income communities in Cali employed during the pandemic crisis, such as community kitchens.

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I selected this topic in 1962 primarily from curiosity to discover the facts concerning present day polygamy in Utah, allegedly still abundant. Perhaps the motivation may be described as an amateur detective's zeal. Considerable material seemed to be available about polygamy in Utah before 1890, when the practice was mostly abandoned by the Mormon people, but, apparently, little has been written on this subject covering the period since that date. Therefore, the purpose of this paper is to cover polygamy in Utah and close proximity from 1890 to the present (1965). Its scope includes: first, continued plural marriages for two decades after the 1890 Manifesto; second, the Mormon Church's view of such marriages and the rise of the "fundamentalists"; third, polygamous organizations, people, and colonies; fourth, legal actions against polygamy in the twentieth century; lastly, some views on polygamy today and in the future. The appendix with alleged revelations from Mormon dissenter groups may be of some interest to L. D. S. readers.

The purpose of this work is to present a history of the Church of the Firstborn of the Fulness of Times, including information relative to its origin that will lead to a better understanding of that history.

Wire and arc additive manufacturing (WAAM) is a manufacturing method using a numerical controlled motion system and a welding system to additively manufacture three dimensional components. The motion system is programmed from three dimensional computer aided design model data (3D-CAD) of the intended geometry which is then sliced in to layers and welded on additively. There are seven process categories within additive manufacturing (AM), each with their own benefits and drawbacks. One of these process categories is directed energy deposition (DED) which uses an energy source to melt material onto a build plate. Instead of filling the build plate with material and selectively melting or sintering the material, DED only deposit material which is to be melted. WAAM is a process within the DED process category. BAE Systems Hägglunds manufactures relatively large components with requirements for mass reduction. Hägglunds has therefor invested in a WAAM laboratory, for testing and investigation on how to utilize this technology to their advantage. During the master thesis a geometrical correlation between the overhang angle and the material deposition on the edges of the overhangs has been found. A slicing strategy utilising this correlation has proven useful in combatting an issue where the top surface of a parallelepiped ends up unwantedly not parallel to the substrate plate. This master thesis has also increased the capability from 30° to 45° overhang angle. A numeric simulation of cooling times in the WAAM process has been developed. The simulation had a maximum error of one minute or about 69 % longer measured than simulated cooling time at worst case.

Over many years the housing industry has been criticised concerning its performance related to factors such as quality and cost. Together with the challenge of improving its capability in meeting individual customers’ needs, by means of effective production, this has resulted in a situation where companies look at other industries, such as manufacturing, in order to industrialise their products and processes. Swedish housing producers are today working towards finding more commonality in products and processes at the same time as the ability to deliver customized product and services is maintained or improved. In some cases this means an increase in central control of the design work carried out in project groups. This thesis presents a study of the design process for housing at a Swedish property developer, JM AB. Interviews have been conducted with three main groups of actors (project leaders, architects and sellers) connected to ten housing developments. A survey has also been sent out to these individuals as well as to other important actors. The main objectives of these investigations were to find out major actors’ attitudes towards the increase in central control of the design work, in general terms as well as in relation to specific design objects (windows, floor plans, bathrooms and basic structure) for the housing projects. The results show that the trend towards more industrialised processes by more structuring and standardising concerning design has had an effect on the design work carried out in project groups. There are positive as well as negative aspects, as well as similarities and differences in attitudes. These differences can be related to different roles as well as to geographical differences. Within this work a triangle has been developed for measuring and comparing different actors’ attitudes. The work further shows that adapting a more holistic view of the design process, by considering it as part of a firm’s product realisation process, could be a base for further developments / QC 20101129