This thesis explores the feasibility of using regenerative spectral hole burning (SHB) in cryogenically cooled Tm³⁺:LaF₃ crystals as a laser frequency reference for Ultrasound Optical Tomography (UOT) systems. UOT is an imaging technique that combines the deep penetration of ultrasound with the high contrast of near-infrared light, offering significant potential for biomedical imaging. A major cha

This study investigates how expiration dates and dynamic shelf life labels influence consumer preferences and willingness to pay (WTP) for fresh chicken products. Using a discrete choice experiment (DCE), the research evaluates the impact of shelf life duration, price, and the presence of a real-time freshness indicator on consumer decision-making. A sample of fresh chicken consumers in Lund, Swed

Fjärrvärme utgör en central del av Sveriges energiinfrastruktur. Över hälften av landets byggnader värms idag med fjärrvärme, och i 250 av Sveriges 290 kommuner är det den dominerande uppvärmningsformen. Det är ett system som historiskt har betraktats som robust och tillförlitligt. Denna stabilitet har bidragit till att det inte har ansetts finnas några behov att upprätta lagkrav på en viss leveraDespite being the dominant form of heating in Sweden and playing a critical role in the functioning of society, there are currently no regulatory requirements for district heating companies to maintain heat supply during crises or wartime. As supply preparedness has once again come into focus, questions arise regarding how the district heating sector identifies and manages risks and vulnerabilitie

Hur mycket energi och vatten förbrukas när en student använder Generativ AI? Du är ute och äter lunch med din kompis. Efter att ha snackat ett tag säger du något som din kompis inte håller med om. Du tar fram din mobil och går in på ChatGPT och skriver in ditt påstående. Efter några sekunder har chatboten genererat ett svar som visar på att du har rätt och du visar din kompis. Du lägger ner mobileIn recent years, Generative AI has experienced a rapid increase in society and is now used all over the world. The purpose of this study is to find out how much energy and water a student in Lund, as well as all students in Lund, consumes when utilizing Generative AI. The method consists of a quantitative survey study that targeted students in Lund and was placed around Lund campus. The collected

Vad styr valet av värmesystem i nybyggda bostadshus? Är det teknikens effektivitet, klimatpåverkan eller något annat? I vårt examensarbete har vi granskat en ofta bortglömd men kraftfull påverkansfaktor: lagstiftningen. Mer specifikt undersöker vi hur Boverkets byggregler (BBR) och dess energikrav påverkar vilka uppvärmningslösningar som väljs i nyproduktion av flerbostadshus. Bakgrunden till arbeThe purpose of this study is to examine how the Swedish National Board of Housing, Building and Planning’s (Boverket) building regulations (BBR), particularly energy performance requirements, influence the choice of heating systems in newly constructed multi-family buildings. Through a combination of literature review, statistical analysis, and interviews with property sector representatives, the

This thesis investigates superconductivity in novel planar Josephson junctions fabricated from a hybrid Al/EuS/2DEG (InGaAs/InAs/InGaAs) heterostructure. Using electron-beam lithography, selective etching, and atomic layer deposition, Josephson junction devices, constrictions, and SQUID geometries were fabricated and a selection of the devices were characterized at millikelvin temperatures. The me

Modellering av naturliga bakgrundskoncentrationer av suspenderat sediment: En studie av Rødsand lagun Fehmarnbelttunneln står färdig 2029 och kommer minska tågrestiden till kontinenten med 2,5 timme. Det omfattande byggnadsprojektet innefattar bland annat tillverkning av betongtunnelsegment och muddring av havsbottnen. Modellering av sedimentspill vid muddring är en viktig del i arbetet för attAnthropogenic coastal and marine activities, like dredging of the seabed, can affect ecosystems through increased turbidity by raising the level of suspended sediment concentrations (SSC). To accurately validate spilled sediment, simulations of background concentrations are essential as both spilled and natural sediment is included in measurements. This thesis aims to improve the representation of

Sveriges tillväxt i förhållande till utvecklingen i vår omvärld uppvisar tre faser under de senaste 170 åren. Från 1890 till 1950 hade Sverige högre tillväxt än jämförbara länder. Sedan följde en fas med eftersläpning till omkring sekelskiftet 2000. Marknadshämmande regleringar av det finansiella systemet var en huvudorsak till eftersläpningen. Efter den finansiella avregleringen börjar en tredje

Framed within debates about the inclusivity of urban development, Ubuntu philosophy and an interest in non-metropolitan growth of ordinary places, 15 small but developing towns were selected across Uganda and Tanzania. Growth and development were evidenced by increase in night-time lights and densification/expansion of built-up areas. Analysis of c. 4,000 individuals asked which towns were more, o

Background: Prostate-specific membrane antigen (PSMA) is an important target for positron emission tomography (PET) with computed tomography (CT) in prostate cancer. In addition to overexpression in prostate cancer cells, PSMA is expressed in healthy cells in the proximal tubules of the kidneys. Consequently, PSMA PET is being explored for renal functional imaging. Left and right renal uptake of P

El Llibre de les fonts de la present Ciutat de Barcelona és un manuscrit conservat a l’Arxiu Històric de la Ciutat que recull el coneixement que existia sobre l’abastiment d’aigua de boca a Barcelona a mitjan segle XVII. Va ser escrit l’any 1650 pel mestre de cases Francesc Socies, qui tenia l’ofici (el càrrec) de mestre de les fonts i, per tant, era el responsable del correcte funcionament del si

PrologMikrovågs-hypertermi och strålbehandling (1980–1990)Min tidiga forskning inom medicinsk strålningsfysik ledde till kombinerad behandling av bröstcancer-recidiv med mikrovågsinducerad hypertermi och lågdos strålning (30 Gy). Kliniska försök inleddes med patienter som tidigare fått full stråldos (60 Gy). Utrustningen visades upp för kung Carl XVI Gustaf och drottning Silvia på Forskningens Dag

Deuteron evaporation was observed from the N = Z compound nuclei 52Fe, 56Ni, and 64Ge in an experiment conducted at Argonne National Laboratory, USA. The experiment included a novel combination of two highly pixelated double-sided Si-strip detectors inside the Microball charged-particle detection array, allowing for unequivocal discrimination of evaporated deuterons from protons and α particles. I

Non-polar and semi-polar III-nitrides have beneficial properties for various electronic applications such as light emitting diodes and photodetectors due to the elimination or reduction of polarization effects. However, cost-effective manufacturing of non-polar and semi-polar III-nitride films with sufficient film quality is not feasible yet. We report an investigation of the morphological and str

Objective: To analyze the outcomes of urgent/emergent endovascular aortic repair of patients with free/contained ruptured thoracoabdominal aortic aneurysms (rTAAA). Background: Endovascular repair of rTAAA has been scarcely described in emergent setting. Methods: An international multicenter retrospective observational study (ClinicalTrials.govID:NCT05956873) from January 2015 to January 2023 in 6

I takt med att hållbarhet blir viktigare söker många företag inom jordbrukssektorn lösningar för att fasa ut fossila drivmedel. Utmaningen blir ännu mer komplex när ersättningen ska vara kompatibel med en existerande fordonsflotta, utan investering i nya fordon. Denna studie jämförde fyra kommersiellt tillgängliga och förnybara drivmedel med referensbränslet diesel. De undersökta drivmedlen är HVAs sustainability becomes more important in today's society, many companies in the agricultural sector are looking for new alternatives to fossil fuels. The challenge becomes even more complex when the replacement must be compatible with an existing vehicle fleet, without requiring new investments in vehicles. This report compares four commercially available and renewable fuels, using convent

Plant-based ice cream and whipping cream are increasingly popular as sustainable alternatives to traditional dairy products. Their low fat content makes them much healthier than high-fat dairy products. However, achieving desirable texture and stability in plant-based desserts remains a challenge. This study investigated how different processing conditions (homogenization pressure, upstream/downst