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Flyktiga organiska föreningar som släpps ut från växter (BVOC- Biogenic volatile organic compounds) kan ha en stor påverkan på atmosfärisk kemi genom reaktioner som leder till ökad eller minskad ozonproduktion, och genom att de kan vara ett förstadium till aerosoler. De vanligaste flyktiga organiska föreningarna är isopren (2-metyl, 1,3-butadien) och dess derivat, terpener och terpenoider (isoprenBiogenic volatile organic compounds (BVOCs) can have a large affect on atmospheric chemistry by the production or degradation of ozone and by acting as precursors to secondary organic aerosols (SOA). The most common BVOCs are isoprene and its derivatives, terpenes and terpenoids (isoprenoids). These are used by the plant in cell membranes and as steroids, but are also a means of communication and

The granite massif in the Tjärnesjö area, southwestern Sweden, was deformed and metamorphosed under granulite facies conditions in late Sveconorwegian time. The intrusive is dominated by a coarse-grained, megacrystic orthoclase granite. Pb-Pb evaporation datings on single zircons from the granite yield an age of ca. 1.36 Ga, interpreted as the intrusion age. A similar age was obtained on zircons f

Tidigare studier har dokumenterat ett flertal fossila meteoriter samt höga koncentrationer av utomjordisk kromit (ett järn-kromoxidmineral) i cirka 467 miljoner år gamla, mellanordoviciska sedimentlager. Fynden antas vara resultaten av ett tillfälligt förhöjt inflöde av meteoritiskt material, efter uppbrytningen av en kropp i asteroidbältet – de så kallade L-kondriternas föräldrakropp – för omkriNumerous fossil meteorites and high concentrations of sediment-dispersed extraterrestrial chromite (EC) grains with typical ordinary chondritic composition have previously been documented from 467±1.6 Ma Ma lower Kundan (Middle Ordovician) strata. These finds most likely reflect a temporarily enhanced influx of ordinary chon- dritic matter, following the disruption of the L chondrite parent body i

During an archaeological excavation in Uppåkra 2010 I found a so-called “guldgubbe”(goldfoilfigure). This find really caught my attention and especially so because their functions are still debated. This master thesis is about the meaning and use of this, more appropriately called, goldfoilfigure. Many attempts to solve the questions surrounding the functions of the figures have been made during t

Aircraft observations of precipitating clouds with cloud top temperatures higher than -38°C have revealed that Secondary Ice Production (SIP) is responsible for presence of majority of ice particles. One such SIP mechanism is fragmentation via collisions between ice particles. The central theme of this study is to understand the dependencies of this SIP mechanism and improve its existing numerical

Den konservativa byggbranschen är i utvecklingsfas då olika metoder effektiviseras. Digitaliseringen har kommit längre i utvecklingen jämfört med människan, ändå nyttjas inte de i den stora omfattningen i det vardagliga arbetet med dess utvecklade potential. I denna studie undersöks hur ekonomiskt och tidsgynnsamt det är med att tillämpa de digitala verktygen vid rapporteringen av avvikelser vid e

När syndafloden kommer När havsnivån stiger och nederbörden ökar riskerar upp till 29 utav Lunds stifts ca 500 kyrkobyggnader att drabbas av översvämningar. Detta betyder att behovet av skydd mot översvämningar troligtvis kommer öka för dessa miljöer i framtiden. Förekomsten av översvämningar förväntas öka till följd av klimatförändringen. Utav de ca 500 kyrkobyggnaderna i Lunds stift kan upp t

Purpose: This study aims to examine changes in the acquired company’s MCS post-M&A and how the employees perceive this change. Further, the purpose is to investigate how employees' perceptions affect the employees’ motivation and identity. Methodology: This study follows a qualitative research approach by analyzing an acquired company in the logistic industry. Data was collected through s

This MSc Thesis’s main objective is to determine the impact of transformer inrush currents in the grid and develop a tool that helps E.ON Energidistribution AB evaluate transformer sizing. The motivation of E.ON is to have a more precise way to estimate the energization consequences of increasing the transformer size in the grid, since currently is being used a rule of thumb that relates the trans

Forests form the backbone of the European terrestrial carbon sink (State Forest Service & Ministry of Environment, 2018). As the European Union (EU) strives to become climate neutral by 2050, forests are accounted for the natural carbon absorption mechanism (European Commission, n.d.). Currently, the European net land carbon sink is decreasing largely due to forest ageing (Pilli et al., 2022),

This thesis employed several portable sensors on board an unmanned aerial vehicle (UAV) and manned aircraft in order to test new methods of measuring vertical profiles of aerosol particles and contribute to knowledge of aerosol distributions in the atmosphere. More data in this area is required to improve atmospheric modelling and future climate scenarios. The handheld nanoparticle detector Partec

Klimatförändringar är en av vår tids stora utmaningar. För att kunna möta dessa finns det ett brådskande behov av att minska vart stora beroende av fossila bränslen. En lovande råvara för produktion av förnyelsebara och koldioxidneutrala bränslen är bioolja. Bioolja kan användas som ett substitut för råolja i raffinaderier och produceras från biomassa, vilket innebär att den kan agera som ett förnTo be able to face the challenges brought on by climate change there is an urgent need to reduce the heavy dependence on fossil fuels. Bio-oil is one such renewable and carbon-neutral replacement that has shown promising potential. A key step in making bio-oil commercially feasible is improvements of the upgrading processes of the bio-oil. One such upgrading process is catalytic hydrodeoxygenation

The purpose of this report is to investigate and compare two potato chip production lines to determine the optimal layout of the factories in order to maximize the chips' adhesion ability to seasoning. The hypothesis of this study is that the adhesive ability of chips is highly dependent on how warm they are when they are seasoned, with warmer chips having a stronger adhesive ability. This hy

To address global food security challenges caused by population growth and climate change, accurate prediction of crop yield is essential for sustainable agriculture. Winter wheat, a key global crop, faces production instability in regions like Sweden and Morocco due to extreme weather conditions. This study employed unmanned aerial vehicle (UAV)-based multispectral imagery and digital surface mod

Adaptive reuse of existing buildings as a part of the circular economy principle has become a more common approach to promote sustainable development, due to increasing urban densification and environmental concerns. Ventilation systems, as a major contributor to energy use in buildings, often face complete replacement during building reconstruction, despite their potential for extended service li

This Master's Thesis examines the possibility of developing a software tool for optimizing offshore wind power plant layouts in regards to wake effects. The study was conducted with the purpose of making development and operation of offshore wind power plants more efficient and cost effective. The tool, named OptiWind, was developed in Python and employs several imported packages for mathemati

Extrema klimathändelser, såsom betydande översvämningar, utgör en risk för naturkatastrofer. På grund av klimatförändringarnas effekter förväntas södra Sverige få fler betydande regnväder som kan orsaka översvämningar i allt högre grad med mängden utsläpp. I denna studie undersöks dagens och framtidens översvämningsrisk i ett litet område i denna region, inom Kävlinges avrinningsområde. I det framExtreme climate events, such as significant flooding, pose a natural disaster risk. Due to climate change effects, the southern region of Sweden is anticipated to receive more significant rainstorms that could cause flooding increasingly with the quantity of emissions. This study examines the present-day and future climate’s flooding risk in a small area in this region, within the Kävlinge Watersh

Conventional agriculture, dominated by annual crops, has revolutionised food production but also introduced significant environmental and social challenges. Perennial crops offer a promising alternative, with potential benefits for ecosystem services, agricultural sustainability, and food security. Although the environmental benefits of perennial crops, such as the intermediate wheat grass Kernza

BACKGROUND: Accurate risk stratification in older adults presenting to the emergency department (ED) is essential but challenging due to atypical presentations and age-related physiological changes. While vital signs are central to triage, their predictive value for short-term mortality in this population remains unclear. This study aimed to explore the association between initial vital signs and

The main focus of this case study was to assess ecological succession and restoration success after the removal of Rosa rugosa. Plant species composition and moss presence, bare ground cover, and biodiversity indices were analysed to identify patterns and differences within and between the restored and an invaded adjacent area. The complete absence of R. rugosa in restored plots confirms the effec