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Popular Abstract in Swedish Tänk dig en solig sommardag. Du går runt med en glass i handen och mår allmänt bra. Runt om dig finns gröna lummiga träd och vackra blommor i alla möjliga färger. Naturen visar verkligen sin vackraste sida. I dagens samhälle tänker man inte så ofta på den mångfald av färger som omger oss. Den blåa himlen, den gula solen, det röda blodet och det gröna gräset. Kanske beroMagnesium chelatase and ferrochelatase are two very important enzymes, which are involved in chlorophyll and heme biosynthesis, respectively. They both use protoporphyrin IX as substrate but magnesium chelatase inserts a magnesium ion whereas ferrochelatase inserts a ferrous ion. These two enzymes have been studied in this thesis. Even though they both insert a metal ion into protoporphyrin IX the

Reaction of N-(2-hydroxybenzyl)-N-(2-picolyl) glycine (H(2)papy) with VOSO(4) in water gives the oxidovanadium(V) oxido-bridged dimer [{(papy)(VO)}(2) μ-O)] (1). Similarly, reaction of N-(2-hydroxybenzyl) glycine (H(2)glysal) with VOSO(4) gives [(glysal)VO(H(2)O)] (2) and reaction of salicylamide (Hsalam) with VOSO(4) in methanol gives [(salam)(2)VO] (3). The crystal structure of the oxido-bridged

Multimedia environments consist of verbal and visual representations that, if appropriately processed, allow for the construction of an integrated mental model of the content. Whereas much is known on how students learn from verbal representations, there are fewer insights regarding the processing of visual information, alone or in conjunction with text. The chapter uses a semiotics approach to pr

Adsorption of cationic polyelectrolytes onto polystyrene latices was studied as function of polymer chemical composition and molecular weight, polymer and surface charge density and ionic strength. The ratio between polymer charges and surface charges was close to one when distances between polymer and surface charges were equal. Overcompensation of the surface charge was obtained at higher polyme

We show that for steady, periodic, and rotational gravity deep-water waves, a monotone surface profile between troughs and crests implies symmetry. It is observed that if the vorticity function has a bounded derivative, then it vanishes as one approaches great depths.

In this letter, we demonstrate the realization of novel diodes, triodes, and logic gates with three-terminal ballistic junctions (TBJs) made from a semiconductor heterostructure. The approach exploits the ballistic nature of electron transport, which has emerged in the nanostructures. Importantly, we show that TBJs function as logic AND gates and can be used to construct other compound logic gates

This thesis consists of six parts in which methods for image analysis and processing are studied. Two-dimensional medical images, image sequences, and three-dimensional image volumes are considered. In the first part, the concept of optical flows (OF) is employed for restoring the contracting/expanding ventricle motion in ultrasonic echocardiograms. Radial velocities obtained by a scalar approach

Popular Abstract in Swedish Evolutionsteorin säger att de anpassningar som leder till en ökad mängd ungar och ättlingar i senare led kommer att sorteras fram av det naturliga urvalet. Det är dock inte alltid så självklart vad som kommer att gynnas av selektionen. Ofta får hanar mer avkomma om de parar sig med många honor, i stort sett oavsett hur de uppnår detta. Hanliga anpassningar för detta ändIn sexual conflicts and conflicts between parents and offspring, natural selection acts in different directions on the two sides. For example, males may be selected to achieve many mates, but female fitness may be maximised by monogamy. In this thesis I study the evolutionary outcome of these situations mainly by theoretical modelling. I present an empirical investigation of mating interactions in

Within the framework of the European project, PROSPER, field experiments with ISA (Intelligent Speed Adaptation) were carried out in Hungary and Spain. Twenty vehicles in each country were equipped with two kinds of ISA systems: 1) warning via an active accelerator pedal and 2) warning via beep signals and flashing red light when exceeding the speed limit.

Both systems are based on a GPS r

Popular Abstract in Swedish Den globala landbaserade kolcykeln reglerar mängden växthusgaser i atmosfären. För närvarande tas varje år 25-30% av våra utsläpp upp av de landbaserade ekosystemen vilket är en viktig ekosystemtjänst som kanske inte kommer att bestå i längden. Upptagskapaciteten av både hav och landbaserade ekosystem tenderar att försvagas av global uppvärmning. Detta leder till att enThe global terrestrial carbon cycle plays a pivotal role in regulating the atmospheric composition of greenhouse gases. Currently it is responsible for removing 25-30% of our emissions every year, an important ecosystem service that may not persist in the long term. Global warming tends to decrease the CO2 sink capacity of the world’s oceans and ecosystems leading to a larger fraction of our emiss

Nanomedicine and the use of nanoparticles (NPs) are growing like never before. It is therefore important to investigate the interactions in the nano world and the possible hazards. Proteins in organisms can adsorb to NPs and change the proteins structure and therefore their functions. This could be a potential danger and thus an interesting research field. Here, we explore how the proteins Calbind