This report present the design and manufacturing of a wide-band driver amplifier placed in radar module for airborne applications. The major goals for the amplifier were a high efficiency and to deliver a predefined output power. To reach the second goal an additional preamplifier had to be constructed. The amplifiers were constructed in three steps: Design and Layout in the software Microwave Office, Mounting components and Verification. The driver amplifier was decided to be a push pull configuration consisting of two parallel transistors biased in class AB.

This is a report written for an examination project C-level, on the subject of energy. The examination project is a product of the FVB Sweden AB (district heating bureau). It started with a meeting with Stefan Jonsson FVB Sweden AB, were he explained the content of the project, and from this a presentation of the problem was made. The problem that needed to be solved was how they could control the valves in the system to provide heating to everyone in the system. The valves are often oversized so the pump in the heating plant would have to be enormous to be able to provide enough flow to be sufficient, if everyone in the system had there valves fully opened. I came up with two solutions to the problem, one was a wireless network that could keep track of the valves and the other solution was an extra sensor that was placed on the radiator.

This report is the result of an investigation of the possibility to use RFID-technology in a producing company. The investigation is focused on a flow between the company?s producing subsidiary company in Lithuania and its main facility in Sweden.RFID is the abbreviation for radiofrequency identification. The RFID-technology forms the base of a system with wireless information transmission between an object to which a transponder, also called tag, has been attached and a reader. The information is transmitted by radio waves and the system is equipped with software that can digitalise the radio waves.

The development of solar photovoltaic (PV) is increasing,with declining module prices and with a strongenvironmental profile. Policies are developed around theworld to achieve the targets set for renewable energy.In Helsingborg, the local power company Öresundskraft isworking with solar PV to achieve the goals of the city.With their vision: - Energy for a Better World and Powerfor the Region, their work with developing the local solarPV market is continuing and the next step is to create asolar PV policy. Today their offer is 1 SEK/kWh for theexcess electricity delivered to the grid.It turns out that compensating the customer is a vitalpolicy and it has to be dynamic to follow the decisions ofpolitics. The same survey shows indeed, thatenvironmental and technical part is of interest. Solar PVwill be supported locally to act on environmentalsustainability and locally produced electricity and withthis Öresundskrafts vision will be achieved..

Wastewater contains biodegradable materials, which are often measured as BOD7.Trickling filters are sometimes used as a purification step for BOD-reduction. Atrickling filter is a tower, which is filled with a carrier material. Microorganisms growon the carrier material in the form of a biofilm. This biofilm consists mostly of bacteriathat purify water from BOD.In Älgarås? wastewater treatment plant the water is purified by a trickling filter.However the treatment plant has difficulties reaching the emission requirements forBOD.

The task was to design and manufacture a submersible displacement pump working with the wobble plate principle. The main task for the Wobble plate pump is to be used as a sewage pump for smaller households or dewatering pump in environments where small flows and high pressures are acquired. For these purposes ITT Flygt sell a screw pump, PC-Grinder 3068. The hydraulic part of the PC-Grinder is manufactured by a subcontractor. Therefore ITT Flygt wants to evaluate an alternative to their screwpump PC-Grinder, which can be entirely manufactured by them self.

I digitala kretsar kan både bit-parallella och bit-seriella interface förekomma.T ex kan en integrerad digital krets (IC-krets) internt använda sig av bit-parallella aritmetiska kretsar medan dess kommunikation med andra integrerade kretsar sker bit-seriellt. Genom att använda seriell kommunikation mellan IC-kretsar kan antalet ben på kapslarna effektivt begränsas.Detta examensarbete gick ut på att göra en layoutgenerator för generering av en parametriserbar serie/parallellomvandlare och en parallell/serieomvandlare. När en krets använder sig av både bit-seriell och bit-parallell representation av data behövs dessa för att omvandla mellan formaten..

Syftet med denna undersökning är att ta reda på till vilken grad olika teorier påverkar hur webbsidor uppfattas. Detta för att kunna utveckla mer tilltalande webbsidor. Vi valde att undersöka sex webbsidor: Aftonbladet, Nerikes Allehanda (NA), Dagens Nyheter (DN), IKEA, Hennes & Mauritz (H&M) och NetOnNet.Undersökningen är uppdelad i tre delar: en enkätundersökning, en expertutvärdering och en jämförelseanalys. Enkäten skickades ut till studenter vid Örebro Universitet via studentmailen och resultatet har sedan sammanställts i ett antal frekvenstabeller. Efter detta utfördes expertutvärderingarna utifrån litteraturstudien.

At Degermyran landfill, situated in the municipal Skellefteå, a leachate treatment system was installed in 2005. One of the aims of this study was to investigate how well the treatment system works by using data from chemical measurements made on the leachate before and after treatment. Further this study had the purpose of investigating how the predicted climate changes of the 21st century will affect the amount of leachate generated at Degermyran by using a modified version of Thornthwaites water balance model. The treatment system has the ability of reducing manganese by 90 %, nitrogen by 73 % och TOC by 79 %. By the turn of this century the amount of precipitation that percolates the waste at Degermyran will be between 254 and 298 mm, depending on the amount of greenhouse gases that will be released in the future to come.

The district heating load is seasonally dependent, with a low load during periods of high ambient temperature. Thermal energy storage (TES) has the potential to shift heating loads from winter to summer, thus reducing cost and environmental impact of District Heat production. In this study, a concept of high temperature borehole thermal energy storage (HT-BTES) together with a pellet heating plant for temperature boost, is presented and evaluated by its technical limitations, its ability to supply heat, its function within the district heating system, as well as its environmental impact and economic viability in Gothenburg, Sweden, a city with access to high quantities of waste heat.The concept has proven potentially environmentally friendly and potentially profitable if its design is balanced to achieve a good enough supply temperature from the HT-BTES. The size of the heat storage, the distance between boreholes and low borehole thermal resistance are key parameters to achieve high temperature. Profitability increases if a location with lower temperature demand, as well as risk of future shortage of supply, can be met.

The emergency medical care in Sweden has been under persistent debate, due to factors such as long waiting hours, inefficient patient flow, and understaffed departments. In an effort to meet the critique and with a willingness to improve the problems, an increasing amount of emergency clinics are adopting theories and models within Lean. Positive outcomes are evident, there has been some criticism directed towards Lean. Among these is the argument that in order for Lean to be successful it needs to be used within standardized and foreseeable processes, and that it therefore only is applicable to those kind of processes found within industrial production. This prompted the question of whether Lean was a suitable strategy within emergency medical care, considering the large variation of patients and non-foreseeable processes that in fact share little resemblance to that of industrial production.

I detta examensarbete behandlas investeringsalternativ för småskalig vattenkraft. Arbetet som riktar sig mot Skellefteå Kraft AB:s anläggningar, har således gåtts igenom, vartefter kandidater lämpliga för en reinvestering tagits fram med passande tekniker. Vidare nämns om dessa tekniker är lämpliga för minskning av förlusterna vid storskaliga utskov. De småskaliga anläggningarna är fördelade på två åar, Rickleån och Åman. I vardera finns två kraftverk som behandlas i detta arbete, Fredriksfors och Sågforsen i Rickleån, samt Åman övre och nedre i Åman.

This project investigates how team sports can be used to include young women in public space aswell as how through the addition of a sporting facility adjacent to three schools can be used as a stepping stone for the young people of Dharavi to have a chance at a brighter future..

I mitt examensarbete har jag arbetat fram en glaskollektion med tema mens. Målet med mitt arbete var dels att höja mensen ur tabut, dels att ge bruksglaset en ny scen. Genom att göra en menskoppsbehållare i transparent glas vill jag ifrågasätta varför vi gömmer och smusslar med våra mensskydd men också varför mensen idag framställs som oren, äcklig och skamlig. Jag vill uppmuntra till att bryta det mönstret, ge den som menstruerar en möjlighet att hylla mensen, sätta den i fokus, på piedestal. Mitt arbete resulterade i ett mensaltare, en tolkning av hur jag tror mensen hade framställts om vi levt i ett matriarkat.

In the spring of 2014 Sweco Systems AB were commissioned to design a ventilation system for a newly built preschool in Linköping. Terms from the client was that it cost efficiency would cope with the energy demands that are placed on the building. The unit chosen was a cross-flow heat exchanger, and this work is to compare it with two other heat exchangers to see if a more energy and cost efficient could have been chosen. The heat exchangers that was chosen for the comparison was a rotating- and a counterflow heat exchanger. Simulations have been made to the different heat exchangers by the manufacturers.