Studien går ut på att jämföra tre olika styrsystem för ventilation, nämligen CAV (Constant Air Ventilation), VAV (Variabel Air Ventilation) och DCV (Demand Controlled Ventilation). Dessa styrsystem ställs mot varandra i tre olika lokaltyper, med syfte att identifiera det mest energieffektiva styrsystemet. Ett syftet med studien är också att upptäcka vid vilka flöden det lönar sig att arbeta med VAV- och DCV-styrsystemen..

Detta examensarbete unders?ker morgonfritidsverksamhetens roll och uppfattningen om det svenska fritidshemmet, med s?rskilt fokus p? diskursen om fritid som ??verbliven tid.? Genom kvalitativa intervjuer med utbildade fritidsl?rare utforskar studien hur ?morgonfritids? organiseras och genomf?rs, vilka faktorer som bidrar till en framg?ngsrik verksamhet, samt hur denna tid kan omdefinieras som en pedagogisk m?jlighet snarare ?n en f?rvaringstid. Studien bygger p? Haglunds (2009) analys av fritidshemmets diskurser, d?r fritid som "?verbliven tid" ofta f?rlorar sin pedagogiska potential, samt p? Vygotskijs sociokulturella teori om l?rande (S?lj?, 2020). Vidare lyfts Jonssons (2021) och P?lsd?ttirs (2012) forskning fram f?r att belysa vikten av dialog och samarbete mellan personal och elever samt hur otydliga pedagogiska visioner kan p?verka personalens yrkesidentitet. Hippinen Ahlgrens (2021) insikter om balansen mellan f?rplanerade och spontana strategier anv?nds ocks? f?r att analysera elevens delaktighet.

In this study potential health risks for employees in connection with handling of bottom ash and bottom ash water at a Municipal Waste Incineration (MWI) plant have been investigated. Air surrounding the bottom ash and the bottom ash water has been examined. MWI is one of the primary ways to manage solid household waste, and bottom ash is the main solid residue produced by the incineration process. Bottom ash constitutes about 15-20% of the original waste. The bottom ash is extinguished in a water bath (bottom ash water).The study was carried out in a MWI plant in Karlstad, Sweden.

Syftet med arbetet är en fördjupning i och undersökning av filmens potential som didaktisk redskap i gymnasieskolans svenskundervisning och i vilken utsträckning mediet används. Multimodal teoribildning har studerats och en extensiv litteraturgenomgång genomförts för att identifiera möjliga användningsområden för film. Kvalitativa intervjuer med lärare som är verksamma i svenskämnet i gymnasieskolan idag har utförts. Det huvudsakliga resultatet från studien belyser att lärare är positivt inställda till att använda film i sin undervisning och gör det till viss del, men att det behövs mer vägledning och struktur runt både konsumtion och produktion av film för att lärarna ska kunna nyttja dess fulla multimodala och didaktiska potential i klassrummet..

The goal of this paper is to find out how solar cells can improve energy efficiency on-board M/S Sydfart. The paper is based on a number of energy measurements on board the M/S Sydfart. The solar surface is calculated by measuring the available space for installing solar panels. Global radiation data is taken from STRÃ…NG's database, the data is then used to calculate the theoretical power produced by the solar cells. Energy efficiency is analysed in two ways.

The demand for environmental assessments on buildings and energy consumption is increasing as well as the energy performance requirements for buildings. At the same time it is increasingly common with self-producers of heat and electricity generation.The main purpose with this master thesis is to investigate how time resolution affects the environmental assessment of energy consumption in office buildings connected to district heating (DH). Environmental assessments were done with both attributional LCA and consequential LCA with system expansion.Fortum´s DH system in Stockholm was analyzed and district heating production was simulated in a Matlab-model. Greenhouse gas (GHG) emissions for the production were calculated. The heat demand of the office Gångaren 16 in Stockholm was simulated in IDA ICE.

Folkhälsovetenskapligt program.

The awareness regarding environmental issues is increasing and as a result a large number of products are eco-labeled. This enables the consumers to make enlightened environmental decisions when purchasing products. Eco-labeling is no longer for products only, but also for services like hotels. It?s difficult to determine what it actually means to eco-label a hotel and what kind of benefits it includes.

I denna uppsats undersöks rollspelets potential att motverka diskriminering och förtryck i förtryckande regimer. Jag tar avstamp i de mänskliga rättigheterna och i dramapedagogikens essens och styrkor. Jag beskriver Youngs diskrimineringsteorier, samt Freire och Boals pedagogiska teorier om den frigörande teaterns styrkor och syften, och presenterar en intervju om rollspelsanvändande mot kvinnoförtryck i Iran. I analysen söker jag samband mellan de olika tillvägagångssätten i användning och syfte med rollspel utifrån materialet och presenterar mina slutsatser; rollspel i förtryckande regimer kan leda till sammanhangsskapande, frigörelse från inre förtryck, och medvetengörande för individ och grupp om hur man kan skapa en dialog om förtryck..

The aim of this thesis was to answer a number of questions about the environmental consequences of aircraft de-icing. A further aim was to suggest how the environmental consequences due to the release of de-icing fluids can be measured and reduced.The main impact of the aircraft de-icing on the environment is due to the large oxygen demand for the degradation of glycol based de-icing fluids which are released in the environment. The effect of the increase in oxygen demand depends on where the degradation occurs in the ecosystem. In a sensitive ecosystem, the large demand of oxygen could provide an anaerobic environment which would be harmful for many types of organisms.In order to reduce the negative effects of the applied de-icing fluid, there is some type of collection system at every regular airport in Sweden. The methods of collection can be divided into two general groups, hydrological isolation or vacuum sweeper trucks.

Learning Management Systems (LMSs) hold great potential to support learning activities, for example by providing teachers and students with new and extended spaces for interaction and collaboration. However, this potential appears to be difficult to realize, and despite their perceived learning benefits, the reality is that LMSs are being used primarily for administrative purposes. Meanwhile, external pedagogical tools are successfully put into practice to improve learning outcomes, and the aim of this study is therefore to identify and discuss benefits and disadvantages associated with the LMS as a concept. By interviewing secondary school teachers, we disentangle the idea of integrating administrative and pedagogical aids into a single platform, providing detailed insight into the use of digital tools in secondary education. The study contributes to a deepened understanding of integrated learning environments, and we conclude that there is a conflict between structure and flexibility that needs to be addressed before determining the design of a digital learning space..

When a combined heat and power plant produces heat and power it often faces a deficit of heat load during the summer or other periods of time. This heat is often unnecessarily cooled away or the power production has to be reduced or shut off. If it is possible to store heat from periods with low heat demand to periods with high heat demand one can get many benefits. Among these benefits are: increased power production, decreased operation with partial load, uniformly distributed load.To be able to store heat in situations like this long-term thermal heat storages are needed. In this thesis five different types of stores are presented: rock cavern storage, tank storage, pit water storage, borehole storage and aquifer storage.

Most descriptions of stereotypic behaviours have in common that these repetitive behaviours only has been observed in captive animals and therefore it has been proposed that stereotypies exist because we house animals in environments that are sub-optimal to them. Some scientists claim that performance of stereotypies in itself decreases the animal's welfare due to costs in time, energy and health and a poorer quality of life. Other scientists assert that individuals performing stereotypies may have a better welfare compared to the rest of the animals in the same environment, since these individuals have developed strategies to cope with stress. Studies have estimated the prevalence of abnormal behaviours in horses to 18-30 % of the population. Several studies on cribbing have revealed a prevalence of 4-5 %, although some results indicate that more than 10 % of the horse population performs this stereotypy.

The Swedish consumption of lamb a increasing, and today we yearly eat a kilo of lamb per person each year. As a consequence the Swedish degree of self production according to lamb is steadily decreasing, and is today about 39 %.Today Swedish Meats is now cooperating with the Swedish lamb breeders organisation to raise that percentage. At the same time the European Union presents a new agricultural reform, the MTR (Mid Term Review). The shape of this new reform is not yet fully known, but the general policy has been more or less outlined. The new reform is split into three propositions: the farm model, the regional model and the mixed model.

Testing and analysis of measurement data is a major part of the workday for development engineers within the section Fluid and Emission Treatment to assure the quality of products developed by Scania CV. The ineluctable variation and therefore uncertainty of results can be quantified and discussed with the use of statistical methods.The overall objective of this study is to examine how the competence of development engineers can be improved within the area of statistics. This has been done by relating the concept of competence with the use of statistical methods to analyse experimental data and by investigating which factors that influence the competence of the engineers. Observations of the daily operations, interviews and a focus group with development engineers and a workshop with management personnel, has been used as research methods in this study.The results show that the desired competence, from the perspective of the individual, consists of knowledge, motivation and support. It is important that none of these parts are neglected when the competence of engineers is to be strengthened.