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Intermetallic compounds are a distinct group of materials having attractive properties and wide applications. In the present work, the formation of intermetallic compounds from elemental components in Cu-Al, Ni-Al and Ni-Ti systems has been studied. Metallic powders were mixed in stoichiometric ratios corresponding to CuAl2, NiAl and NiTi. Calorimetric studies were made using compacted disks as we

Authentication theory deals with problems connected with the protection of information sent over insecure channels. This thesis concerns different problems in authentication theory. In particular, we consider unconditionally secure authentication, i.e., providing authentication protection agains an enemy equipped with unlimited computing power. Several topics in authentication theory are treated:

In recent years, language contacts have been considered one of the main causes for language change (Heine and Kuteva 2005, 2006), and this is also the case in English. However, English has gone through a range of contacts including a mutually intelligible language, e.g., Old Norse, and various dialects. In the context of English, French does not form a similar kind of contact, since it was spoken

Popular Abstract in Swedish Prostatacancer är idag den vanligaste sjukdomen hos män, och är den cancer form som leder till flest dödsfall bland män i Sverige (av de män som får diagnosen avlider 35% på grund av sjukdomen). Det har visats att risken att utveckla prostatacancer påverkas av ålder, etnicitet och diet (bla asiatisk mat och tomater verkar ha skyddande effekt), men också av genetiska fakProstate-specific antigen (PSA) is a worldwide used tool for the diagnosis and monitoring of prostate cancer. It is a serine protease and belongs to the family of glandular kallikreins. Humans have three classical glandular kallikreins, but it has been reported that rodents have many more. Lately, the family has been expanded to contain 12 new genes, KLK4–KLK15, that are situated at the same locus

Purpose of this paper The outcome of product development, i.e. the product design, together with the packaging solution, has a great impact on the logistics performance of supply chains. Despite this, packaging has traditionally been given a very modest role in the product development literature as well as in the logistics literature. The aim of this paper is to show how logistics performance an

Non wide-sense stationary (WSS) uncorrelated scatterering (US) fading processes are observed in vehicular communications. To estimate such a process under additive white Gaussian noise we use the local scattering function (LSF). In this paper we present an optimal parametrization of the multitaper-based LSF estimator. We do this by quantizing the mean square error (MSE). For that purpose we use th