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Numerisk strömningsmekanik är en kraftfull metod för att förstå flödet och förbränningen som sker i flygplansmotorer och kommer att vara ett avgörande verktyg i övergången från konventionella fossila bränslen till hållbara alternativ. Eftersom mer forskning har skett kring konventionella bränslen bör en simuleringsmetod för alternativa bränslen föregås av en metod som verklighetstroget kan simulerComputational fluid dynamics is a powerful method for understanding the flow and combustion that occurs inside aircraft engines and will be a key tool in the transition from conventional fossil-based fuel to sustainable alternatives. Because conventional fuels have been more widely researched, an attempt at simulating the combustion of alternative fuels should be preceded by the development of a m

This thesis investigates the possibility of the mediated city providing a space for resistance in everyday life in a society where free speech channels are strictly controlled. The case studied in this thesis is the phenomenon of a group of fans of a singer who has been banned by the government in mainland China writing graffiti in public urban space on Rehe Road in Nanjing to express their love a

Vilken krabba kan hantera det bäst? Invasiva arter är ett problem för naturliga ekosystem runt om i världen eftersom de har egenskaper som gör dom överlägsna inhemska arter. En sådan invasiv art har nyligen påträffats vid den svenska kusten i Östersjön, den vitfingrade brackvattenskrabban (Rhithropanopeus harrisii). Denna krabba kommer ursprungligen från Nordamerika, men har spridit sig över storIt is well documented that invasive species could have significant impacts on the native ecosystem in its introduced range. Recently the Baltic Sea has been invaded by the North American Harris mud crab, Rhithropanopeus harrisii (Gould 1841). This crab could potentially have big impacts on the ecosystem since there is a lack of crabs in the Baltic Sea. This study aimed to evaluate what impacts R.

Indonesia has implemented national policies and legislations to encourage biofuel production as means to achieve energy security and self-sufficiency and to reduce reliance of fossil fuel reserves. However, there is still no clear road-map for the socio-technological transition. While acknowledging economic impediments, this case study investigates social and political obstacles to bioethanol prod

Denna studie syfte är att undersöka vad som bedriver ett politiskt engagemang hos en ung akademiker. Studien har utgått från Esser & de Vreeses definition av politiskt engagemang. Studien avser att öka kunskapen för hur den unga väljaren uppfattar sin politiska omgivning och vad som motiverar ett politiskt engagemang samt hur den politiska kommunikationen och digitaliseringen har betydelse i dThis paper aims to examine what motivates political engagement for a young university student. The paper has been guided by Esser & de Vreese’s definition of political engagement. Furthermore, we sought to complement the current knowledge in relation to young voters regarding what motivates them and how the political communication and digitalization matters in the process. Three research areas

Vidhäftning är ett fenomen som naturligt uppstår i livsmedelsindustrin. Fenomenet uppstår främst då livsmedelsprodukter klibbar sig fast och fäster till ytor i processutrustning. I flera fall kan vidhäftning vara till god nytta till exempel som en sensorisk aspekt, men i livsmedelsindustrin kan fenomenet utgöra en nackdel. Tetra Pak har i ett projekt tillsammans med Lunds Tekniska Högskola utveckStickiness of different food products on surfaces can occur naturally during food filling in Tetra Recart form- and seal machines. The aim of this thesis was to develop a model and an adhesion test method for determining and understanding this stickiness. More specifically for the food products whole peeled tomatoes, sliced mushrooms, mandarin chops and peach halves on stainless-steel. Additionall

The white light LEDs of today are usually based on a blue LED and a phosphor, converting the blue light to longer wavelengths. While these phosphor-converted LEDs are extremely efficient compared to incandescent light or fluorescent light, there is still plenty of room for improvement. In the conversion between blue light and light of lower energy approximately 25-45 % of the radiant power is lost

This research has established a different approach towards a better design in packaging development for the Early Life Nutrition portfolio of Danone Nutricia Research. During this study, the value chain of plastic flexible packaging has been analysed by looking into the different technologies used at the sorting centres as well as technologies used to recycle multilayer films (e.g. delamination pr

Searches for the doubly charged Higgs(H±±) aim to find evidence for models that could explain the origin of neutrino masses. Earlier searches at the LHC have used different production processes for the H±±, with the recent development of lepton parton distribution functions new leptonic production processes are able to be studied. In this thesis the single production process l± + l± → H±± has been

The main topic of this thesis is the storage location assignment problem, which can also be seen as a traveling salesman problem. The objective is to find the shortest path between items to be picked at a medium-sized warehouse. Orders come in batches consisting of items that will be assembled in-house. Therefore, it is essential to pick up all the items contained in the batch before they are drop

This text explores the implementation of a gender perspective in urban planning in Mexican cities, emphasising its impact on citizens' lives, services, and public spaces. It aims to assess how cities incorporate gender perspectives in their urban development plans. The study analyses the urban development plans of Mexico's 30 most populated cities and their policies in terms of implementin

This paper addresses the currently existing research gap regarding the lack of a clear definition and categorisation of lifestyle entrepreneurs. The primary objective is to examine the different core dimensions of lifestyle entrepreneurs and develop a comprehensive concept on their basis. This study adopted an abductive approach to explore the understanding of lifestyle entrepreneurs. By utilising

I ett allt mer digitaliserat samhälle, så är omställningen påtaglig även inom läkemedelsindustrin. Kontrollsystemet Orbit utvecklades vid Lunds Universitets avdelning för kemiteknik, för att möjliggöra automatisering av nedströmsprocesser baserade på ÄKTA-system. Kontrollsystemet har en inbyggd simulator, som tillåter en användare att genomföra simulerade experiment istället för fysiska. Målet medIn an ever more digitilized society, the transition is palpable also in the pharmaceutical industry. The control system Orbit was developed at the department of chemical engineering at Lund University, to be able to automate downstream processes based on the ÄKTA-system. The control system has a built-in simulator, enabling the user to run simulated experiments instead of actual physical experimen

The formation of amyloid fibrils from soluble peptide is a hallmark of many neurodegenerative diseases such as Alzheimer's and Parkinson's diseases. Characterization of the microscopic reaction processes that underlie these phenomena have yielded insights into the progression of such diseases and may inform rational approaches for the design of drugs to halt them. Experimental evidence suggests th

Background: Brevican, neurocan, tenascin-C, and tenascin-R are extracellular matrix (ECM) proteins that are mainly expressed in the brain. They play important roles in proliferation and migration of neurons and other cell types in the brain. These ECM proteins may also be involved in various pathologies, including reactive gliosis. Objective: The aim of the study was to investigate if ECM protein

Lean premixed combustion (LPC) is a promising technology for low-NOx emission, while it increases the risk of blowoff at the same time. Experiments and Large Eddy Simulations (LES) on swirl stratified lean-premixed CH4/air flames were performed to study the differences between the stable and near blowoff flame. The flow fields and instantaneous flame structures were measured by simultaneous Partic

A cohouse is a house with private apartments as well as shared areas and they can be organized in different ways. The purpose of the project was to learn more about cohousing. How the common rooms are used and what kind of furniture is preferred. My method was to read about the topic and then visit cohouses in Sweden and Germany to do interviews and study the use and function of the sha

Problemet som studien ska undersöka är hur krav och tilldelningskriterium kopplade till klimat och miljö används och värderas i offentlig upphandling av. De primära frågorna som studien avser att besvara är följande: Vilka krav och tilldelningskriterium ställs idag kopplat till miljö och klimat vid offentlig upphandling av byggprojekt? Hur utvärderas och formuleras krav och tilldelningskriterium kThe problem that the study will investigate is how requirements and award criteria linked to climate and the environment are used and valued in public procurement of civil engineering projects. The primary questions that the study intends to answer are the following: What requirements and award criteria are set today linked to the environment and climate in public procurement of construction proje

This thesis compares traditional machine learning algorithms and large language models (LLMs) in developing personalized recommender systems to enhance passenger experiences on flights. Traditional methods like collaborative filtering have been widely used but face challenges such as data sparsity and cold-start problems. LLMs, with their advanced natural language processing capabilities, offer pr