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Utformning av integrerade stöd med grova stålrörspålar för järnvägsbroar

Syftet med denna uppsats är att utifrån ett referensobjekt undersöka hur broar med integrerade stöd grundlagda på stålrörspålar kan utformas för att uppfylla högt ställda deformationskrav för höghastighetståg. Användningen av integrerade stöd är stor i bland annat USA och England. De främsta fördelarna med integrerade stöd är att de innebär att broar kan utformas utan lager och fogar. Detta är fö

Start-up Eco-nomics - A Qualitative Study on Exploring How Funding Influences Sustainable Innovation in Start-ups

This research explores the impact of different capital financing strategies on the development of sustainable innovations within startups. Grounded in theories of Sustainable Business Model Innovation and Resource Dependence, this qualitative study employs in-depth, semi-structured interviews and thematic analysis. Findings reveal that funding choices significantly influence startups' capacity

Assessing Soil Erosion in the Nyagako Sub-catchment, Rwanda - Integrating GIS Analysis, Turbidity Measurements, and Sediment Fingerprinting

Jorderosion är en global utmaning som påverkar miljontals hektar mark och leder till betydande förluster i jordbruksproduktivitet och ökad sedimentering i vattendrag och sjöar. Faktorer såsom intensivt jordbruk, avskogning och förändringar i markanvändning bidrar avsevärt till detta problem. I och med klimatförändringarnas intåg med ökade extrema väderförhållanden förväntas jorderosionen att öka jSoil erosion is a significant challenge in Rwanda, particularly within the Nyagako sub-catchment, where this study focuses on a delimited area. This research investigates the sources and contributing factors of soil erosion using GIS analysis, turbidity measurements, and sediment fingerprinting with a deconvoluted MixSIAR (D-MixSIAR) model in R. The objectives were to identify erosion-prone areas,

Recombinant Expression in Pichia pastoris and Characterization of GH36 α-Galactosidases

α-Galactosidases from Aspergillus nidulans (AglC) and Penicillium subrubescens (PsGal36-2527) are exo-acting enzymes that can be found in the Glycoside Hydrolase (GH) 36 phylogenetic cluster with eukaryotic α-galactosidases. In utilizing enzymes for industrial applications, finding enzymes with a broad range of substrate specificities and high catalytic efficiencies is quite challenging. It has be

Low Preschool Teacher Quality in Private Preschools and Areas of Low Socioeconomic Status – When the Equalizing Potential of Preschools is Surpassed by Uneven Levels of Certified Preschool Teachers

Given preschools’ important role in shaping children’s learning and development surprisingly little is known about why some Swedish preschools are much more successful in offering high-quality early education than others. Earlier research has shown that socioeconomic gaps in educational achievements can largely be explained by knowledge gaps established during the preschool years. There may be soc

Overpacked? A case study on aseptic packed beverages

Introduction: The current Tetra Brik Aseptic packaging contains a polyethylene-aluminium layer that is difficult to recycle. Alternative materials have been explored to eliminate this aluminium layer, resulting in reduced carbon emissions but a 30% shorter shelf life. This trade-off raises concerns about potential increases in food waste due to reduced shelf life. Therefore, this study aims to exp

Att leda i en spridd organisation: En kvalitativ studie som undersöker chefer och deras uppfattningar kring en god psykosocial arbetsmiljö vid distans- och ett ökat hybrid arbete

Syfte: Denna studie syftar till att undersöka och öka kunskapen kring chefers roll i främjandet av den psykosociala arbetsmiljön på arbetsplatser, där distans och hybrid arbete blivit vanligt förekommande under och efter corona-pandemin. Frågeställningar:(1)Hur upplever chefer att deras ansvar för skapandet av en god psykosocial arbetsmiljö har förändrats i samband med det ökade distans- och hybr

Impact on the Technical Performance of a Utility-Scale PV Plant when Using Different Sizes and Numbers of Transformers

Solcellsparker blir både allt vanligare och allt större. I denna studie undersöks hur storleken och antalet transformatorer i en solcellspark påverkar dennas förmåga att leverera el. De rådande klimatförändringarna är en av de största utmaningar mänskligheten ställts inför. Fossil elproduktion är en stor bidragande faktor till utsläpp av växthusgaser globalt. Solceller ser ut att spela en avgöranThe main focus of this thesis has been to examine and compare how the size and number of internal power transformers affects the technical performance (robustness, power quality and efficiency) of a utility-scale PV plant. The technical performance was examined in a simulation environment (MATLAB Simulink), where a PV plant with a fixed number of PV arrays and converters, corresponding to a rated

Cell Disruption using High Pressure Homogenization : Evaluating operation parameters and analysis methods applied on gram-positive bacteria.

Denna uppsats handlar i huvudsak om fenomenet celldisruption, att genomföra detta på industriell skala och analysera resultaten. Celldisruption är en process som används mycket brett inom bioteknik då själva processen går ut på att utvinna de intressanta ämnen som producerats i en cell. Idag produceras en stor mängd läkemedel cellulärt men även inom bland annat produktion av tvättmedel, ost och fäThis thesis explored the efficacy of high pressure homogenization for disrupting gram-positive bacteria of the species Lactiplantibacillus plantarum. The focus was on the impacts of homogenization pressure and the number of passes through the homogenizer as well as developing a simple method for measuring cell disruption. Turbidity measurements in combination with microscopy and laser diffraction

TOWARDS ZERO EMISSION BUILDINGS: A Holistic Guide for Homeowners through EPBD Compliance and the Renovation Passport Framework

This master thesis presents a suggested Renovation Passport for two typical 1960s single-family houses. Following the recently approved Energy Performance of Buildings Directive (EU 2024/1275A), all member states are to implement voluntary Renovation Passports by 2026, which will aid in reaching the 2050 goal of a decarbonized building stock. The aim of Renovation Passports is to provide long-ter

Northern Ireland Identity Dynamics in the Aftermath of the Brexit Referendum: A Thematic Exploration of Opinion Newspaper Articles

Northern Ireland’s relatively recent history as a state has been marked by decades of ethnonational conflict, euphemised as “The Troubles.” While the signing of the Good Friday Agreement marked the beginning of a period of relative peace and stability, the United Kingdom’s decision to leave the European Union has raised concerns that this peace will be threatened. Academic analysis of society and

Genomförande av BIM inom byggbranschen. Fördelar mot begränsningar i projekteringsskede

Building Information Modeling (BIM) är ett arbetssätt och samlat begrepp som ger möjlighet att visualisera önskad design i verklig storlek och dimensioner (ur olika vinklar och vyer). BIM är en smart teknik och en ny designprocess där all information och konstruktion specifikationer skapas i en digital fil. Så BIM är inte enbart en mjukvara, utan en enorm teknik. För att implementera denna teknik Building Information Modeling (BIM) is a way of working and collective concept that provides the opportunity to visualize the desired design in real size and dimensions (from different angles and views). BIM is a smart technology and a new design process where all information and construction specifications are created in a digital file. So BIM is not just a software, but a huge technology. To imp

Flood risk assessment using GIS and multi-criteria analysis: a pilot study from Rönne å River basin, Scania, Sweden

Following the flooding event in Ringsjön within the Rönne å river basin in January 2024, this catchment area was utilized for a flood risk assessment. The study focused on the precipitation event during August 2023, known as Storm Hans. The flood risk assessment for the Rönne å catchment area was conducted using multi-criteria analysis (MCA) and geographical information systems (GIS). Seven factor

Framställning av ligninbaserat aktivt kol för avskiljning av organiska mikroföroreningar

Aktivt kol har identifierats som en av de mer effektiva metoderna när det kommer till att avlägsna organiska mikroföroreningar (OMF) från avloppsvatten. Aktivt kol är ett poröst material med stor ytarea som kan adsorbera andra ämnen. Det är inget som existerar naturligt utan behöver framställas. Framställningen kan ske från i princip vilket material som helst som har en hög kolhalt. En stor del avActivated carbon has been identified as one of the more effective methods of removing organic micropollutants (OMP) from wastewater. Activated carbon is a porous material with a large surface area that allows adsorption of other substances. The material does not exist naturally and therefore has to be produced. The production can be done from any carbon-rich material and today the precursor is mai

Detektion av utsläppsplymer med avancerat ekolod – Undersökning av utsläpp av avloppsvatten från pappersbruk i havet med EK80, CTD & filmmaterial

Nymölla är en liten kustnära tätort belägen i nordöstra Skåne. Kusten utanför Nymölla, en del av västra Hanöbukten, är uppsatsens geografiska fokusområde. Under 1960- och 1970-talen anlades både massa- och pappersindustri i Nymölla, två betydelsefulla industrier för Sverige, både gällande export och ekonomi. Ett exempel av Sveriges femtiotal massa- och pappersbruk är Nymölla Bruk, en produktionsan

Another Way to Green: China’s ‘Ecological Civilization’ Approach to Environmental Governance

This thesis investigates the practical and conceptual interplay between authoritarian and green ecological governance within China’s Ecological Civilization system, post- 2013. Through a qualitative analysis of official policy documents and semi-structured interviews, the study explores how China navigates the spectrum between the ‘Green State’ and ‘Authoritarian Environmentalism’. Findings sugges

Nature-Based Solutions at the Climate-Biodiversity Interface: Practices and Prospects in Finnish Municipalities

Despite a persistent reliance on conventional grey infrastructure solutions, there is increasing recognition of the vital role of nature-inclusive urban planning in managing climate risks such as floods and heatwaves while simultaneously promoting biodiversity, human health, and well-being. This multifunctionality underscores nature's intrinsic importance, reframing it as a fundamental necessi

Negotiating Security and Advocacy: A Qualitative Interview Study with Women's Rights Advocates on Navigaating the Silent Security Dilemma

Prominent female figures engaging in the societal debate, such as journalists and activists, tend to be targeted for online hate speech and threats disproportionally. At the same time, people in Sweden depend on an online presence to function as individuals. Feminist security studies have yet to incorporate the gendered online dimensions of hate speech and threats. This paper examines how the femi

Baryon number violating neutron decays to dark matter via the emission of a π 0 meson, η meson or photon

The existence of a baryon number violating process is one of Shakarov's conditions to explain the observed baryon asymmetry in the universe. The Standard Model is nearly symmetric with respect to the baryon number, and hence we are motivated to look for physics beyond the Standard Model. In this thesis, we consider an effective field theory operator that couples the neutron to a proposed dark

Interdisciplinarity in Science-Policy Interfaces A comparative Case Study of the Integration of Social Sciences in IPCC and IPBES

This thesis critically assesses the integration of social sciences and interdisciplinarity within the international science-policy interfaces Intergovernmental Panel on Climate Change (IPCC) and Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES). I depart from a theoretical framework using the concepts of academic disciplines, interdisciplinary work and scient