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Världskrig i svenska farvatten

Recension av Mirja Arnshav & Andreas Linderoth (red.), Sverige och första världskriget. Maritima perspektiv.Review of Mirja Arnshav & Andreas Linderoth (eds.), Sverige och första världskriget. Maritima perspektiv.

Eddy-covariance measurements as a tool for ecological and hydrological studies on the Tibetan Plateau

The environment of the Tibetan Plateau (TP) is regarded as one of the most sensitive ecosystems of the world. However, investigations on effects caused by global climate change or anthropogenic activities are rare due to its quite remote location. This thesis deals with various aspects of the carbon and water cycle within ecological and hydrological studies that can be assessed by measurements of

Microfluidic Cell and Particle Sorting using Deterministic Lateral Displacement

Microfluidics is a field which has the potential to revolutionize medical diagnostics. The ability to sort and analyse cells by the use of portable handheld devices has the potential to enable sensitive devices for point-of-care diagnostics. This could play a major role in diagnosis of a wide range of diseases which are prevalent in remote areas in developing countries where a majority of the peopMicrofluidics is a field which has the potential to revolutionize medical diagnostics. The ability to sort and analyse cells by the use of portable handheld devices has the potential to enable sensitive devices for point-of-care diagnostics. This could play a major role in diagnosis of a wide range of diseases which are prevalent in remote areas in developing countries where a majority of the peop

Whole-mount in situ hybridization and immunohistochemistry in Xenopus embryos.

Xenopus is a favorable experimental model in developmental biology. With its fast and external development, high number of progeny and large size, early embryos are well suited for micromanipulation to study the function of genes with relevance to human diseases. In this chapter, we present a combined method for lineage tracing and whole-mount in situ hybridization. In addition, we present protocoXenopus is a favorable experimental model in developmental biology. With its fast and external development, high number of progeny and large size, early embryos are well suited for micromanipulation to study the function of genes with relevance to human diseases. In this chapter, we present a combined method for lineage tracing and whole-mount in situ hybridization. In addition, we present protoco

Progress on multi-order hard x-ray imaging with multilayer zone plates

Hard x-ray focusing and imaging on the few nano metre scale has gained a lot of attraction in the last couple of years. Thanks to new developments in fabrication and inspection of high-N.A. optics, focusing of hard x-rays has caught up with the focusing performance for soft x-rays. Here we review the latest imaging experiments of the Göttinger Multilayer zone plate collaboration, summarising our r

Towards multi-order hard X-ray imaging with multilayer zone plates

This article describes holographic imaging experiments using a hard X-ray multilayer zone plate (MZP) with an outermost zone width of 10nm at a photon energy of 18keV. An order-sorting aperture (OSA) is omitted and emulated during data analysis by a 'software OSA'. Scanning transmission X-ray microscopy usually carried out in the focal plane is generalized to the holographic regime. The MZP focus

Processing and characterization of nanowire arrays for photodetectors

We present a fabrication scheme of contacting arrays of vertically standing nanowires (NW) for LEDs (Duan et al. Nature 409:66–69, 2001), photodetectors (Wang et al. Science (NY) 293:1455–1457, 2001) or solar cell applications (Wallentin et al. Science (NY) 339:1057–1060, 2013). Samples were prepared by depositing Au films using nano-imprint lithography (Ma rtensson et al. Nano Lett 4:699–702, 200

High-flux ptychographic imaging using the new 55 μm-pixel detector 'Lambda' based on the Medipix3 readout chip

Suitable detection systems that are capable of recording high photon count rates with single-photon detection are instrumental for coherent X-ray imaging. The new single-photon-counting pixel detector 'Lambda' has been tested in a ptychographic imaging experiment on solar-cell nanowires using Kirkpatrick-Baez-focused 13.8 keV X-rays. Taking advantage of the high count rate of the Lambda and dynami

Dicarboxylic acids from xylose, using natural and engineered hosts

Chemical building blocks for plastics can be produced from renewable biomass feedstocks using microbial production organisms, such as yeast or bacteria, in a biorefinery. One class of chemical building blocks that are suitable for production of biobased and biodegradable plastics are dicarboxylic acids, e.g. succinic acid. In order to avoid competition with food and feed production it is desirable

Degradation of the chemotherapy drug 5-fluorouracil on medical-grade silver surfaces

The degradation of the chemotherapy drug 5-fluorouracil by a non-pristine metal surfaces is studied. Using density functional theory, X-ray photoelectron spectroscopy and X-ray absorption spectroscopy we show that the drug is entirely degraded by medical-grade silver surfaces, already at body temperature, and that all of the fluorine has left the molecule, presumably as HF. Remarkably, this degrad

Interaction between cereal β-glucan and proteins in solution and at interfaces

Cereal β-glucan is well known for its beneficial health effects, such as lowering of blood cholesterol values and a reduced risk of coronary heart disease. These effects are often discussed in relation to the dissolution and aggregation behavior of the β-glucan during human digestion. Furthermore, potential proteinaceous material present is believed to have an important impact on the formation of

Analysis of fire barriers with respect to fires with combustible gases and liquids

Fires including flammable gases and/or liquids differ from typical residential fires where the fuel is mainly composed of solid combustibles. The traditional ISO 834 curve was established to represent the timetemperature curve for a fully developed fire. However for combustible gases the type of thermal exposure might be substantially different and therefore other curves have been developed such a

Experimental and numerical investigation on fire behaviour of foam/fabric composites

Upholstered furniture is a major contributor to the fuel load in a fire compartment. Modelling the fire behaviour of upholstered furniture would support performance based fire safety engineering, by allowing the specification of realistic fire scenarios. Modelling upholstered furniture composites in cone calorimeter test conditions is undertaken to validate fundamental assumptions about the fire b