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Personal Aerosol Sampler with Size Fractionation and Time Resolution

This chapter describes a personal aerosol sampler with size fractionation and time resolution that gives samples for elemental analysis. An impaction stage collects coarse particles and a filtration stage collects finer ones. Sampling in consecutive time intervals is performed on different impaction and filtration surfaces. These sampling surfaces corresponding, for example, to 15-min intervals, m

Amphorae from Caronia and Caronia Marina, Provincia di Messina, Sicily – Thin-Section analyses

The Amphorae was a common container for transportation of especially liquid goods in the Greco-Roman world. There are several known production sites of these vessels around the Mediterranean. The shapes of the different amphorae have been amply described and grouped according to different systems. There has also been several works describing the fabric of the vessels and also attempts to link vess

Noncollinear Magnetism

Recently, a great deal of effort has been focused on developing the so called “fully unconstrained” approach to noncollinear magnetism. This approach allows the magnetization density within a material to be calculated as a continuous vector variable of position, as opposed to using the atomic moment approximation (AMA) where a fixed quantization direction is assumed for a volume filling sphere sur

The Useworthiness of Robots for People with Physical Disabilities

Popular Abstract in Swedish Avhandlingen behandlar robotteknik och de nya möjligheter som den kan ge människor med rörelsehinder. Jag fokuserar på teknikanvändaren och teknikanvändningen, speciellt på vad som gör robothjälpmedel värda att använda. Distinktion görs mellan användvärdhet och användbarhet. Erfarenheter från användning av den rullstolsmonterade robotarmen Manus visar att tekniska kravThis thesis deals with robotics and the new possibilities it offers people with physical disabilities. I focus on the user and the use of the technology and, in particular, on what makes robotic aids worth using - useworthiness as distinguished from usability. User experience of the wheelchair-mounted Manus manipulator shows that robotic arms must meet technical requirements in terms of accelerat

Towards a responsive functional material: Modification of porosity and grafting of poly(N-isopropylacrylamide) in mesoporous silica SBA-15

Popular Abstract in English Figure 1: Electron microscopy image of mesoporous material seen from above. The left image shows a possible shape of a silica particle (scale bar: 1 μm). The right image shows the mesopores in the particle (grey color) with the silicon dioxide walls (black color) (scale bar: 150 nm). Poly(N-isopropylacrylamide) (PNIPAAM) is a polymer that can provide the active part forMesoporous silica materials, such as SBA-15, have potential as biocompatible carriers for pharmaceutical applications as well as mini-reactors in e.g. catalysis. This potential arises from their well-defined porous structure on the nanometre scale accompanied by a high internal surface area (800 - 1000 m2/g). This work addresses the following issues. i) Surface grafted PNIPAAM was found to be loca

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Abstract in Norwegian Artikkelen presenterer de skandinaviske helgenene Theodor væringen og sønnen Johannes, Russlands protomartyrer med utgangspunkt i russiske kilder, men utifra et skandinavisk perspektiv. Den presenterer likeens den hellige Anna (Ingegerd) av Novgorod med utgangspunkt i både russiske og norrøne kilder.