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Destillation: Nyckeln för hållbara bioraffinaderier? I jakten på hållbara energilösningar har biobränslen seglat upp som en lovande kandidat. Att producera dem hållbart och effektivt är dock inte utan sina utmaningar. Ett avgörande steg i en ny lovande process är användningen och återvinningen av de stora mängder lösningsmedel som används, vilket kan ha avgörande ekonomiska och miljömässiga fördelRecycling solvents used in the synthesis of biofuels is of great importance to create a sustainable process and economic benefits. This thesis investigates the recycling of ethanol and butanol from bio-oil, which are used as solvents in a biorefinery process. Distillation showed high potential and was further investigated through simulations and laboratory verification. The study utilized the NRTL

Sverige har ett nationellt mål om att minska utsläppen av växthusgaser från inrikes transporter med 70% fram till år 2030. För att minska dessa utsläpp beslöt Sverige år 2017 om den så kallade reduktionsplikten, som innefattar ett krav på att successivt öka inblandning av biodrivmedel i diesel och bensin. Stigande drivmedelspriser har sen dess fått flera partier att vända sig mot reduktionspliThe Greenhouse Gas Reduction Mandate (GGRM, reduktionsplikten) is Swedish legislation focused on reducing carbon emissions by mandating that the emissions of certain fuels are reduced by a specified percentage, that percentage increasing each year. This paper investigates the rationale behind a political drive to decrease the GGRM, the cost-effectiveness of the GGRM, and the consequences of t

Introduction: Despite Sweden’s commitment to ensure and achieve universal access to sexual and reproductive health (SRH) services, in line with the United Nations’ goals for sustainable development, there is evidence of limited SRH access and outcomes among women with insecure migration status in Sweden. For asylum-seekers and undocumented migrants, access to subsidised SRH services is regulated t

In the past decade, there has been a major shift in automotive propulsion systems from fossil fuel vehicles to environmentally friendly, zero-emission transportation. This has made hydrogen-powered vehicles a hot topic. Volvo Group has launched a fuel cell truck to promote energy transition. A fuel cell consists of two electrodes (anode and cathode) and an electrolyte membrane inserted between the

Klimatförändringarna förväntas påverka alla världens regioner negativt med bland annat intensifiering av lokala översvämningar och värmeböljor. För att förebygga dessa effekter är det avgörande att utveckla anpassningsbara och tåliga städer. Naturbaserade lösningar (NBS) har pekats ut som ett av de viktigaste verktygen i klimatanpassningsarbetet. Trots en ökad kunskap om NBS många fördelar kvarståThe ongoing climate changes pose a serious threat to both societies and ecosystems globally. Intensification of extreme weather, floods in combination with heat waves and droughts are some of the challenges that require adaptable and sustainable solutions. Nature-based solutions (NBS) have been identified as a powerful tool for creating resilient and sustainable cities by integrating natural proce

Bus rapid trasit kan beskrivas som ett högkvalitativt bussystem med hög kapacitet, separerade körfält, signalprioritering och stationsliknande hållplatser. Det finns idag ingen tydlig definition vad svensk BRT är. Ett fenomen som är lätt att identifiera då alla svenska BRT-koncept skiljer sig markant åt mellan varandra. Men frågan är, vilken kvalitet håller svensk BRT och hur skiljer den sig mot iBus Rapid Transit, in short BRT, is a transport mode that has the potential to support a modal shift. In Sweden, there has been a growing interest in BRT, particularly in smaller to medium-sized cities. The challenge lies in the absence of a clear definition of how this kind of system should be designed in a Swedish context. Consequently, there have been efforts to create guidelines and assessment

När man färdas genom Sverige går det enkelt att notera att en stor del täcks av skog, närmre bestämt ungefär 70%. Flera av våra viktiga ekosystem med höga naturvärden finns bland denna grönska. Mycket skog innebär även många skogsägare som har olika behov. Därför behövs även olika typer av naturskydd för att hitta något som passar alla. Människan är del av ekosystemen, och vi skulle inte klara osThe European union and the Convention on biological diversity require 30% of all land to be protected by 2030, stressing the necessity for increased nature conservation. To meet the requirements different forms of protection are needed. Thus, nature conservation agreements (NCA) relevant for further exploration, as they are not used in as large of an extent as other nature conservation types. Thi

This study aimed to examine how children's autism and parental maltreatment are described in court rulings involving child protection cases under § 2 of the Swedish Care of Young Persons Act (LVU). A qualitative approach was adopted, analyzing court rulings from the Administrative Court and the Court of Appeal. The study utilized a norm-critical perspective and thematic analysis to explore how

I studien utforskas den mikrobiologiska kvaliteten hos sejfiléer som tillagas till 72°C i innertemperatur och sedan kallpaketeras under både modifierad och icke-modifierad atmosfär. Genom ett samarbete med en kommun har vi kunnat utbyta kunskap och eventuellt identifiera områden för framtida utveckling inom ämnet. Syftet med denna studie är att undersöka hur olika förpackningsmetoder och lagringstThe study explores the microbiological quality of saithe fillets cooked to an internal temperature of 72°C and subsequently cold-packaged under both modified and unmodified atmospheres. Through collaboration with a municipality, knowledge exchange has been facilitated, potentially identifying areas for future development within the subject area. The purpose of this study is to investigate how diff

This bachelor thesis was conducted through a quantitative study on the relationship between board gender diversity in publicly listed companies active in the EU and said firms’ dividend payouts. It also investigated how this relationship seemed to have been influenced by country-specific factors that were not accounted for through the chosen explanatory variables. It hypothesizes that there would

Problem Statement: Company Pie is planning for a new centralised distribution centre, as part of a reorganisation of their distribution network. This entails consolidating volumes from several existing facilities, and another company named Company Rho, when setting up a distribution centre configuration. Company Pie wants a second set of eyes to create a configuration, including operations, and de

Past research on the determinants of voter turnout have focused on the socioeconomic conditions of electorates, institutional environments and electoral systems of countries. A neglected area of research has been the relationship between voter turnout and welfare expenditure. This paper examines the relationship between voter turnout and welfare expenditure within and between 31 OECD member countr

Event generators are useful for simulating collision experiments in high-energy particle physics. In the event generator PYTHIA 8, parameters may be varied to compare competing models against experimental data. It is then beneficial to employ reweighting techniques to explore the results for multiple parameter values with only one simulation. This study aims to develop and implement a reweighting

Att filma blodflöden med MR-kamera kan vara ovärdeligt för patienter med ett enkammarhjärta. Denna studie visar att magnetkamera kan bli ett värdefullt verktyg för att övervaka och hantera möjliga komplikationer hos barn födda med hjärtfel, vilket i sin tur kan förbättra deras hälsa och livskvalitet. Barn som föds med ett defekt hjärta där en av hjärtats sidor inte funkar som det ska, behöver ofThe treatment for children born with only one functioning ventricle culminates in a Fontan procedure, which aims to create a total cavopulmonary connection (TCPC), i.e. where the superior and inferior vena cava has been connected to the pulmonary arteries, bypassing the right atrium and ventricle. The blood flow to the right and left lung plays an important part in preventing pulmonary arterioveno

Genom intervjuer med användare visar den här studien hur geografiska tillgänglighetsmått bör utformas för att optimera funktionaliteten i olika kartbaserade webbapplikationer. Utgångspunkten har varit befintliga tillgänglighetsmått som ofta används idag. Kartbaserade webbapplikationer kan idag innehålla stora mängder geografiska data. Med hjälp av verktyg i applikationerna kan användare enkelt uThe purpose of this study is to find out how accessibility measures for geographical data describing population and infrastructure should be designed to best meet the needs of users. As a starting point, ready-made applications have been used, developed by Tillväxtverket. The work began with a literature study on how accessibility measures are designed and what possibilities and variations is used

Övergödning är ett utbrett problem i alla Sveriges sötvattendrag, men störst är problematiken i södra Sverige. En kostnadseffektiv åtgärd för att få kontroll på övergödningen är att anlägga miljödammar och våtmarker i anslutning till åkermark. Dessa fångar upp och binder fosfor och kväve från gödselläckage innan det når ut i andra större vattendrag. För att dessa våtmarker ska göra nytta i längdenRegulations regarding management of dredged sediment from the maintenance of artificial ponds and other wetlands are ambiguous. Currently in Sweden, compliance with guidelines concerning pollutants is often prioritized over the climate impact associated with the transportation during disposal of these sediments. Therefore, this study aimed to evaluate the applicability of current guidelines to dre

Quantum metrology is a rapidly growing field of quantum information science that aims to exploit the counter-intuitive properties of quantum systems to estimate physical quantities with better-than-classical precision. The field primarily deals with the problem of estimating system parameters, which may or may not directly be associated to an observable. A prominent result of quantum metrology is

The purpose of this research paper is to explore and gain a deeper understanding of consumer attitudes towards brands that embrace minimalism as the design aesthetic for their logos, uncovering the nuances and intricacies of this trend.

Understanding the pH sensitivity of proteins and enzymes across intracellular compartments is crucial for fundamental research. Lizatović et al. [1] aimed to design a peptide incorporating a specific amino acid to form a hexamer structure and lacking it to form a pentamer structure. Unexpectedly, two distinct structures emerged based on pH. At pH 6, a hexamer structure formed, albeit with a surpri