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Development of a CFD Methodology for Molten Salts in Heat Exchangers

Som vi har märkt på grund av de senaste årens höga elpriser är en jämn elproduktion från grön energi väldigt viktig. Solkraft där man lagrar energi i smält salt kan användas för att sprida ut eltillverkningen på alla dygnets timmar. Utvinningen av saltets energi är då högst betydelsefull och denna har undersökts genom effektiva och simpla flödessimuleringar i detta arbete. Dessa flödessimuleringaTo be able to meet the global energy demands, a steady supply of green energy is required, even during sun- or windless hours. Concentrated solar power is a useful alternative, which can produce and store green energy by heating a heat transfer fluid (HTF) and extracting its energy via a heat exchanger. One such category of HTF is molten salts, and to understand and be able to model the behaviour

Optimization of Recombinant Phytoglobin Production

Ett protein med potential: så kan växternas hemoglobin förändra världen Från blodbrist till vegetarisk kost uppmanas vetenskapen ständigt att hitta lösningar som främjar både hälsa och hållbarhet. En spännande möjlighet finns i phytoglobiner; växternas egna form av hemoglobin. I det här projektet har ett phytoglobin från sockerbeta producerats och optimerats i bakterier, med målet att ta fram ettHemoglobins, part of the globin superfamily, are heme-containing proteins that are involved in numerous biological processes, primarily oxygen transport. In plants, they are known as phytoglobins and serve diverse roles beyond oxygen transportation, with potential applications as artificial blood substitutes, iron supplements, and plant-based meat alternatives. A class 1 phytoglobin from sugar bee

Characteristics and Toxicity of an Everyday Polyamide : A study of potential health risks of micro- & nanoplastics released from nylon

Plastic has been a revolutionary material in human history. Plastic materials have several desirable properties, such as durability, low production costs, and versatility. This helps explain the increase in their use and production over the past 100 years. Plastics are synthetic polymers, with long repeating chains of monomers; this creates structures that are chemically stable and durable. The ov

Lithium Elemental Abundance Determination for 4MOST

Stellar lithium abundances can help answer multiple unanswered questions within modern astrophysics. Lithium is fragile in comparison to other elements found in stellar atmospheres. Consequently, its abundance within the stellar atmosphere is depleted by different processes. Studying these lithium abundances gives insight into the evolution of the stars and the processes within their interiors. Th

Integration of Solid State Physics in Secondary School Education

The understanding of solid state physics is a significant part of understanding the foundations of modern technology and engineering. Applications of solid state physics are broad; it includes solar panels, laser technology, transistors, light emitting diodes (LEDs), and many more, all of which have been significant technological advancements that have offered people efficient and useful devices a

SiS - arbetet inifrån

This study aimed to investigate how institutional staff at special residential youth homes operated by the Swedish National Board of Institutional Care (SiS) experience their authority under coercive legislation. How they perceive their power position regarding the youths, and which ethical dilemmas may arise in their work. The study also explores the experiences regarding the criticism directed a

Constructing Welfare Crime: A Discourse Analysis of Municipal Problem Representations in Turbulent Times - A Multi-Site Case Study of Three Swedish Municipalities

This thesis explores how welfare crime is discursively constructed as a problem in policy documents from Järfälla, Malmö, and Uppsala, using Carol Bacchi’s What’ s the Problem represented to Be? (WPR) approach. Within a context of turbulence (Ansel et al 2024) the study examines how welfare crime is presented, what remains unproblematized, and the political and discursive effects of these represen

Targets for the Circular Economy – The industry perspective

Det är alltmer tydligt att användningen av naturresurser är ohållbar för vår planet. Dagens resursuttag och resursanvändning representerar cirka hälften av växthusgasutsläppen, och 90% av förlusterna av biologiskt mångfald (IRP, 2019) och behöver förändras. Att gå från en linjär ekonomi som bygger på ett ”slit och släng”-mönster, till en cirkulär ekonomi blir allt viktigare. Politiken såväl som näResource extraction and processing contribute to more than 90% of biodiversity loss and water scarcity and about 50% of climate impacts globally. Moving towards a sustainable resource use is fundamental for reducing environmental impact. Resource use is often considered within the framework of the Circular Economy, a concept that has been widely adopted as a key strategy to meet this challenge. In

The Right to Seek Asylum in (Times of) Crisis: Finland as a Case Study

This thesis explores the right to seek asylum in the European Union (‘EU’) in situations where migration is used as a tool of political pressure - referred to as instrumentalization of migration. The analysis is grounded in Finland, focusing on its Eastern border with Russia where instrumentalized migration has recently occurred - as part of Russia’s broader strategy to destabilize and exert press

Developing An Internal 3PL Solution: A Case Study at Lindab

Rising logistics costs and inefficiencies caused by Lindab Group’s current internal markup structure have prompted the company to consider a new logistics model. This study examines the feasibility of developing an internal third-party logistics (3PL) provider as a way to improve operations, increase profit and enhance coordination across the group. The research maps current distribution flows, id

Att känna rätt - moraliskt beslutsfattande ur olika perspektiv och emotionell intelligens som påverkansfaktor

The purpose of this study was to investigate whether there is a difference in what individuals consider important when making moral judgments. This was examined through two research questions. The first concerned whether individuals value different underlying factors of morality depending on whether the statement concerns themselves or someone else. The second research question explored whether em

Relation Between High Pressure Blocking and Aerosol Concentrations in Southern Sweden

Gör fint väder luftkvaliteten sämre? Finns det något härligare än en solig vecka? När de mörka molnen, det envisa regnet och de kyliga dagarna till slut ersätts av några veckor med sol, värme och klart väder i södra Sverige. Men tänk om jag sa att dessa långa perioder med klart väder kanske inte är så positiva som vi tror. De kan faktiskt innebära en ansamling av farliga partiklar i luften. PeriHigh-pressure blocking events are anticyclones that persist over a region for a long time. The event prevents vertical mixing of air pollutants due to the subsidence inversion created by the adiabatic compression of air during the anticyclone. This study investigated the relationship of aerosol concentrations during periods of high-pressure blocking events in southern Sweden for the rural location

Remote Solidarity and Remote Warfare: Street Art and Military Visualising Technologies in Palestinian Territories.

This essay investigates the ways of convergence of the spectacle with the surveillance, as suggested by Thomas Mitchell and Nicholas Mirzoeff. In order to ground their suggested theory in concrete visual empirical cases, I situate my analysis in the Palestinian territories. I juxtapose ostensibly disparate visual phenomena deriving from the street art and the military visualizing technologies. The

Dynamics of migration, consumption and gender: The case of Ukrainian migrant women in Sweden

How do practices of migration, consumption and gender mutually shape each other in contemporary society? In this thesis, I am trying to partly address some aspects of this question by examining the consumption practices of Ukrainian migrant mothers in Sweden. Drawing on conceptual frames of gendered geographies of power and employing a practice theory as a meta-theoretical approach, I conducted fo

Analys av LVU-domar: om genus och föräldraskap

Every year, over 1000 young people receive care through LVU. LVU is compulsive care and in each LVU case a judgment is written, where the decision on LVU is taken. My essay is about these judgements. I will analyze these judgement with the method discourse analysis.

Populariserad yta och vetenskapligt djup. Översättning av dubbelbottnade uttryck i en bok om evolutionsbiologi

Den här uppsatsen tar sin utgångspunkt i en översättning av andra kapitlet ur den populärvetenskapliga boken Dinner with Darwin av Jonathan Silvertown. Uppsatsen inleds med en källtextanalys och en redogörelse för den globala strategi som har använts vid översättningen. Därefter följer en översättningsanalys som behandlar översättningen av ett för källtexten typiskt pedagogiskt grepp som här benäm

Development and Evaluation of a Tomographic Technique for Volumetric Imaging of Flames

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

Steering the Client toward Self-sufficiency Swedish Social Workers’ Accounts of Responsibilisation

Under senare decennier har det förekommit frekventa politiska utspel såväl som lagändringar när det gäller socialbidragstagande. Dessa hänger samman med ett allmänt omfamnade av ”aktiveringspolitik” när det gäller arbetslöshet i stort. Vi har till följd av detta omfamnande sett en allt större sammanblandning mellan arbetsmarknads- och socialpolitik, vilket har lett till utökad samverkan mellan tilIn the last couple of decades in Sweden, there has been an adoption of “workfare”-oriented policy approaches to unemployment (as opposed to the former, less conditioned welfare-oriented ones). Consequently, labour market policies more and more have started to encompass the Social Services Department (in Swedish; “socialtjänsten”). In Scandinavia, active labour market policies are commonly referred

Trends in Flooding in Europe and North America - an Extreme Value Approach

This study examines minimally altered catchments in Europe and North America in order to determine whether any changes to the dynamics of flooding have occurred due to changes in the climate. By examining the parameters of the Generalized Extreme Value (GEV) distributions of in- dividual catchments it is possible to determine not just if changes in flood patterns have occurred, but also the nature

A Place for Play

Architects not so often focus on playgrounds. Indeed, it is a huge field, full of challenge and curiosity. The aim of this work is to design a playground, that would encourage children to stay outdoors enjoying the most interesting forms of play. Having studied the routes and the major aspects of playgrounds design, I decided not to impose a fixed form of organisation. Instead, an instrument was s