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As the identification process is based on the unique patterns of the users, biometrics technologies are expected to provide highly secure authentication systems. The existing systems using fingerprints or retina patterns are, however, very vulnerable. One’s fingerprints are accessible as soon as the person touches a surface, while a high resolution camera easily captures the retina pattern. Thus,

Popular Abstract in Swedish Populärvetenskaplig sammanfattning: (Popularized summary in swedish) I den här avhandlingen har vi studerat bindväven i brosk. Bindväv är ett samlingsnamn för de stödjevävnader som ger form och struktur åt brosk, ben, senor, hud etc. Bindväven skyddar även inre organ från yttre påverkan. Det är bindväven som ger brosket dess speciella egenskaper och som gör att brosketThis thesis describes chondroadherin, one of the leucine-rich repeat proteins in the extracellular matrix (ECM) of cartilage. Chondroadherin defines a subgroup of its own by not having an N-terminal extension, having a different cysteine pattern and by being devoid of carbohydrate substitutions. Here we show that chondroadherin also have a different exon-intron organization and chromosomal localiz

Some systems approaches tend to conceptualize social systems as collective entities, in which emergent properties of the whole can render individuals within a social system invisible. As critical systemic thinkers, however, we choose to see a social system as an emergent property of the interactions between unique individuals whose social relations are of interest. Thus, within the field of critic

In this thesis, the high temperature superconductors (HTSC) Ba_0.6K_0.4BiO₃, La₂CuO_4+x, Bi₂Sr₂Ca_1-xY_xCu₂O _8+d, Bi₂Sr₂CuO_6+d as well as semiconducting Ba_0.9K_0.1BiO₃ and the strongly magnetoresistant material La₁

Popular Abstract in Swedish Att avstå från och att avbryta livsuppehållande behandlingar på intensivvårdsavdelningar. I mitten på 1980-talet träffade jag en 16-årig flicka, som jag kallar för Annie, som patient på en intensivvårdsavdelning. Annie var förlamad på grund av en förlossningsskada. Hon hade inte tidigare behövt sjukhusvård. Nu behövde respiratorhjälp på grund av en lunginflammation. TrMany deaths in intensive care units are preceded by decisions to withhold or withdraw life-sustaining treatment. Under what conditions are forgoing life-sustaining treatment considered appropiate, when is it optitional and when is it wrong? Relevant guidelines are essential to help medical decisionmakers, but they cannot be established only from medical knowledge. They also must be related to basi

AIMS: To develop a sensitive mutation screening procedure suitable for routine analysis of the peripherin/RDS gene, and to estimate the nature and prevalence of peripherin/RDS gene mutations in Swedish patients with autosomal dominant retinitis pigmentosa. METHODS: To make the method as sensitive as possible, as many as eight segments, covering the three exons and the flanking intron sequences of

Respiratory chain Complex I or NADH:quinone oxidoreductase catalyzes oxidation of NADH in the mitochondrial matrix or bacterial cytoplasm and reduction of quinone in the membrane, coupled to pumping of 4H+/2e- across the membrane. The same enzyme complex is also capable of the reverse reaction, i.e. @D@mH+-supported NAD+ reduction. The molecular mechanism that couples electron transfer to proton p

This thesis is devoted to statistical problems in mobile communication, in particular disturbance rejection and change detection are studied. Co-channel interference is a significant problem for systems based on TDMA, e.g. EDGE. We show methods for detection and suppression of such interference, when the terminal is equipped with only one antenna. Our algorithms are able to detect an interferer fo

Both the Fe II UV emission in the 2000-3000 Å region [Fe II(UV)]and resonance emission line complex of Mg II at 2800 Å areprominent features in quasar spectra. The observed Fe II(UV)/Mg IIemission ratios have been proposed as means to measure the buildup ofthe Fe abundance relative to that of the alpha-elements C, N, O, Ne,and Mg as a function of redshift. The current observed ratios show largesca

Objective: To investigate the association of a posteriori dietary patterns with overall survival of older Europeans. Design and setting: This is a multi-centre cohort study. Cox regression analysis was used to investigate the association of the prevailing, a posteriori-derived, plant-based dietary pattern with all-cause mortality in a population of subjects who were 60 years or older at recruitmen

BACKGROUND: Recent reports have shown that, although rare, findings of mucosal ulcers and perforations of the nasal septum in some cases may be associated with the use of topical nasal glucocorticosteroids (GCS). It can been speculated that, a reduction in septal mucosal blood flow causing ischemia may eventually induce septal perforations. AIM: To evaluate whether a single dose of a potent nasal

Human obesity is a global epidemic, which causes a rapidly increased frequency of diabetes and cardiovascular disease. One reason for obesity is the ready availability of refined food products with high caloric density, an evolutionarily new event, which makes over-consumption of food inevitable. Fat is a food product with high caloric density. The mechanism for regulation of fat intake has theref