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Forward scattering measurements of periodic metamaterials are investigated. A sum rule for forward scattering is derived using the optical theorem and analytic properties of Herglotz functions. It shows that the absorbed and scattered power over all wavelengths from a periodic metamaterial is related to the static polarizability per unit cell. The theoretical results are verified by a parallel pla
En skola för alla – är ett uttryck som beskriver en politisk ambition att skapa en för alla elever likvärdig grundskola i Sverige. Som verklighetsbeskrivning har uttrycket emellertid sina begränsningar och det är just det som utgör bakgrund till föreliggande text. En skola för alla har vi kanske främst om man väljer att fokusera på olika strukturella förhållanden: skolan är obligatorisk för alla u
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With the STIS E230H mode (R 118,000), we have identified about twentyabsorption components in line of sight from Eta Carinae. Two components,one at -513 km/s and another at -145 km/s, are quite different incharacter from the others, mostly at intermediate velocities (Seeadjacent posters by T. Gull and A. Danks). The -145 km/s component issignificantly wider in fwhm, is seen in many more species, a
The aim of the thesis is to improve the initial steps of xylose metabolism in recombinant Saccharomyces cerevisiae. S. cerevisiae takes up xylose of poor affinity by means of hexose transporters. Metabolic control analysis was used to investigate whether the low xylose utilisation rate is due to inefficient transport. Xylose transport was found to have little control over the aerobi
Video content constitutes a large share of residential Internet traffic. The major source of video content as of today is YouTube. In this paper, we analyse the user demand patterns for YouTube in two metropolitan access networks with more than 1 million requests over three consecutive weeks in the first network and more than 600,000 requests over four consecutive weeks in the second network. In p
The metal beaker that was found in the house is a unique object. The shape arouses associations with late antique glasses. The beaker is covered with embossed gold bands with figure representations carried out in early Style I. The bands were probably produced around 500 AD. The body of the beaker might be contemporaneous or possibly also older, with the bands as a later addition. The beaker is co
