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An experimental and theoretical study of compaction, flow and hydrodynamic dispersion in a chromatographic column containing non-rigid particles is presented. Experiments were performed using chromatographic columns packed with either a dextran-based chromatographic gel or glass beads. It was found that both the velocity variations and the dispersion irregularities in the column containing the co
Popular Abstract in Swedish Växande krav på transporters kvalitet och kvantitet ger höga förväntningar på vägarnas kvalitet. Därför har omfattande resurser ägnats åt vägbyggnad och särskilt förbättring av befintliga vägar för att bemöta krav på säkerhet, komfort och bärighet. Ett välfungerande vägnät är en viktig komponent i den ekonomi- och samhällsutvecklingsprocess som förbrukar en stor del av The main objective of this thesis is to study the response and development of permanent deformation in unbound granular materials, theoretically and experimentally. A testing box technique is used here to more closely simulate the behaviour of unbound aggregates subjected to external vertical loading. A small box device (800×800×800 mm) is employed to test both the response and permanent deforma
From the point of view of each individual’s sense-making, an organization is an emergent property of inter-individual sense-making processes and activities. The organization is a result of emergence from individual sense-making perspectives. A critically informed approach to research involves recognition / understanding of this emergence. Without the recognition of the uniqueness of each particula
In the context of multiple stressors such as land shortage and food insecurity, the thesis deals with gendered land and labour rights as a social aspect of food production in subsistence agriculture in sub-Saharan Africa. Using the Chiweshe communal area in Zimbabwe as an example, it identifies, investigates and draws conclusions on higher order social processes of gender, power and incremental in
Rapid development of computer capacity and advances in numerical solution methods for the governing equations of fluid flow and heat transfer have enabled CFD (computational fluid dynamics) methods to gradually become useful tools in research and development, engineering design and analysis of heat transfer equipment. However, turbulence modelling still presents a problem as accurate and reliable
Popular Abstract in Swedish Proteinkinas C (PKC) är en familj enzymer (protein som påskyndar cellulära förlopp) bestående av åtminstone 10 medlemmar (isoformer) vilka är involverade i ett flertal cellulära processer. Varje isoform är namngiven med en grekisk bokstav och beroende på olika egenskaper hos enzymerna kan PKC familjen delas in i tre undergrupper, de klassiska (α, βΙ, βΙΙ och γ), de nya Protein kinase C (PKC) is a family of serine/threonine kinases subgrouped into classical (α, βI, βII, γ), novel (δ, ε, η, θ) and atypical (ζ, ι/λ) isoforms. PKC can be activated by phorbol esters, and prolonged treatment of neuroblastoma cells has been shown to induce neuronal differentiation with neurite outgrowth and increased expression of neuronal genes. Here we show that a classical PKCβ isof
Popular Abstract in Swedish Behandling med radionuklidterapi baseras på radioaktiva läkemedel, d.v.s. läkemedel som i sig består av ett radioaktivt ämne, eller som kopplats till en radionuklid. Den strålningsenergi som avges vid de radioaktiva sönderfallen absorberas i vävnad och ger en lokalt absorberad stråldos där läkemedlet tas upp. Viktigt är härvid att upptaget är högre i patologisk vävnad äIndividual-based determinations of the absorbed dose in radionuclide therapy largely rely on absolute measurement of the activity distribution and its redistribution over time. Scintillation-camera imaging is the most commonly employed measuring technique, applied in planar or SPECT mode, sometimes in combination with structural images from CT. In this thesis, methods for processing and analysis o
Abstract not available
