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Popular Abstract in Swedish Avhandlingen pressenterar resultat från fyra studerade områden; En undersökning av hur nya kolvrörelser (volym-vevvinkel relationer) påverkar utsläpp, effekt och verkningsgrad; En undersökning av hur kväveoxid påverkar självantändning och knack; En undersökning av hur vätgas och reformerad metanol (RMG) kan utnyttjas som bränsle, dels i vanliga tändstiftsantända (SI) moThe results presented in this thesis can be divided into four areas of investigation: Investigation of the effect of new volume-crank angle relations on engine emissions, power and efficiency; investigation of nitrogen oxides effect on auto ignition and knock in SI engines; investigation of premixed SI and HCCI engine operation with the alternative fuels hydrogen and reformed methanol gas (RMG); s

Background: Long-distance migration has evolved multiple times in different animal taxa. For insect migrants, the complete annual migration cycle covering several thousand kilometres, may be performed by several generations, each migrating part of the distance and reproducing. Different life-cycle stages and preferred orientation may thus, be found along the migration route. For migrating red admi

Kinetics of lysine blockage, as an early step of the Maillard reaction, was investigated in commercial skim milk powder to understand the extent of the reaction, specifically after packages are opened and during the subsequent storage. Samples were stored at six conditions including three temperatures (30, 32.5 and 35 °C) and two relative humidities (43% and 52%) for 30 days, the period in which t

The formation of hydrides in zirconium alloys significantly affects their mechanical properties and is considered to play a critical role in their failure mechanisms, yet relatively little is known about the micromechanical behavior of hydrides in the bulk. This paper presents the result of in situ uniaxial mechanical tensioning experiments on hydrided zircaloy-2 and zircaloy-4 specimens using ene

Many industries rely heavily on fossil fuels as energy source for their processes which has contributed to a rapid increase in anthropogenic carbon dioxide (CO2) emissions in the atmosphere causing a harmful effect on the environment. Carbon capture and utilisation (CCU) is a technology pathway that can play an important role in reducing CO2 emissions and contribute to a more circular economy. CCU

Ammonia (NH3) is an inorganic substance considered as a promising fuel for power sector decarbonization. As a result of the absence of carbon in its structure, ammonia is capable of producing energy with zero CO2 emissions when burned. However, the combustion of NH3 presents several challenges as a result of its low reactivity and low flame speed as well as the formation of large quantities of nit

Posters at the NanoLund Annual Meeting 2022 Poster title Research area Presenter Organisation The Influence of pH on Nano-Sized Triolein Lipolysis Life Science & Nano Ben Humphreys Physical Chemistry Separation of singlets and clusters of group A streptococci using deterministic lateral displacement Life Science & Nano Elham Akbari Lund University Sorting of Breast Cancer Cells into Different Subp

https://www.nano.lu.se/sites/nano.lu.se/files/2022-10/List%20of%20poster_2022.pdf - 2026-07-23

High fidelity Large Eddy Simulations (LES) are performed on a non-premixed hydrogen-air annular rotating detonation combustor. The simulations utilize a 22-step hydrogen-air reaction mechanism and an existing flow solver that is optimized for high-speed reacting flows. The selected combustor, designed by the US Air Force Research Laboratory (AFRL), has been extensively studied experimentally acros

Compensation behaviour is established for the gas phase hydrodehalogenation of a range of haloarenes over a common Ni/SiO2 catalyst. Analysis of the experimental results delivers an isokinetic temperature (T-iso) at 658 +/- 2K associated with the following reactants: chlorobenzene, 4-chlorotoluene, 3-chlorophenol, 1,3,-dichlorobenzene, 4-chlorophenol, 3,5-dichlorophenol, 1,4-dichlorobenzene, bromo

The cyanobacterial water-soluble orange carotenoid binding protein (OCP) is an ideal system for study of the effects of protein environment on photophysical properties of carotenoids. It contains a single pigment, the carotenoid 3'-hydoxyechinenone (hECN). In this study, we focus on spectroscopic properties of hECN in solution and in the OCP, aiming to elucidate the spectroscopic effects of the ca

Some fundamental physical questions were highlighted through a literature study. The mathematical model for both the initiation of turbulence fields and for the DNS solver was shown. Initial turbulence fields were then formed by the different methods and a comparison between them was made. The comparison included differences in overall pattern through the use of different energy spectrum functions

Urbaniseringen sker idag i snabb takt, men genom bebyggelseförtätning kan städernas utbredningshastighet avta. Behovet av att förtäta medför dock att urbana grönytor riskerar att få låg prioritet i stadsplaneringen om inte deras värden är tillräckligt tydliga. Syftet med denna studie är att tydliggöra värdet på de urbana grönytorna i Lunds kommun, samt att visa på potentialen att höja detta värde.Urbanization is a major driver of land-use change but the urban sprawl can be decreased by the densification of cities. On the other hand densification poses a threat to the urban green spaces; areas that have a high delivery of ecosystem services are essential to a high-quality living environment. The aim of this thesis is to illuminate the benefits of urban green space to raise their importance

Halogen bonding is increasingly utilized in efforts to achieve high affinity and selectivity of molecules designed to bind proteins, making it paramount to understand the relationship between structure, dynamics, and thermodynamic driving forces. We present a detailed analysis addressing this problem using a series of protein-ligand complexes involving single halogen substitutions - F, Cl, Br, and