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During a machining operation the workpiece material at some point has to split up into two separate material flows forming the chip and machined surface respectively. In the boundary zone between these two different flows of material it is possible to distinguish a stagnation point. This stagnation point is closely related to the minimum chip thickness h1min. The size of h1min is of great interest

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Popular Abstract in Swedish När främmande fettlösliga ämnen som miljögifter (ex. PCB och dioxin) hamnar inuti kroppen bearbetas de ofta av det så kallade biotransformations-systemet. När inte levern och njurarna direkt kan utsöndra de främmande molekylerna får enzymer ändra de oönskade ämnenas kemiska sammansättning. Detta görs genom att ändra molekylernas kemiska egenskaper så att de blir vattenlIn vertebrates, studies of the aryl hydrocarbon receptor (AhR) have been of particular interest due to its direct involvement in the toxic effects exerted by several environmental pollutants, such as PCB and dioxin. After binding to the toxic molecule, this receptor initiates transcription of several genes that are part of the biotransformation battery but most notably the cytochrome P450 (CYP) ge

Popular Abstract in Swedish Bakgrunnen for den foreliggende avhandling er et ønske om å utnytte moderne tredimensjonell bildeanalyse for å forbedre undersøkelse og tolkning av synsnervehodets (papillens) form og størrelse (topografi). Synsnervehodet representerer den delen av synsnerven som trer inn i bakre del av øyet gjennom senehinnen (sklera). Den normale synsnerve har ca 1.2 millioner nervetrEvaluation of the optic nerve head topography is one of the most important methods to diagnose and monitor patients with glaucoma. Until recently, optic nerve head topography has most often been judged by either ophthalmoscopy or from optic disc photographs. These methods are subjective and examiners do not have access to absolute measurements of the optic disc size and cup depth. The result of su

There is increasing evidence that fermentation in the large intestine is important for health, and that health-promoting effects are mediated by fermentation products such as butyric and propionic acid. As the formation of carboxylic acids (CAs) from various carbohydrates reaching the colon has been shown to vary, it is of great interest to identify food factors that could be of importance to this

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Tackling biodiversity loss requires not only scaling up financial resources but also improving the governance of how such resources are mobilized, allocated, and accounted for. This paper reviews recent peer-reviewed literature (2019–2023) on biodiversity finance governance, focusing on three interrelated themes: financial instruments and mechanisms, governance structures, and critical and normati

Natural gas/diesel dual-fuel combustion is a novel technique that offers high thermal efficiency and reduced emissions without requiring extensive hardware changes or complex aftertreatment systems. Previous study conducted on the same setup has shown that increasing the diesel mass split ratio (SR) between two injections and advancing the start of first injection (SOI1) improved NOx, HC emissions

It has been shown by Fano [1] that photoionization of a cesium atom by a laser pulse tuned to the vicinity of a Cooper minimum generates spin-polarized electrons. Here we show that while photoionization of rare gases does not provide large spin polarization in the vicinity of the Cooper minimum, the Fano resonances yield much higher overall spin polarization (≥40%). The spin polarization increases

With calls for increased greenery in cities to safeguard biodiversity and its associated benefits to humans, urban vegetation must be managed carefully and efficiently. It is time to change paths from current spurious attempts to manufacture resilience and instead usher in evidence-based urban greening to secure ecosystems for the future.