In this work benzoyl dextrans with a degree of substitution (DS) ranging from 0.02 to 0.29 and valeryl dextrans with a DS ranging from 0.025 to 0.2 were synthesized. The modified dextrans were characterized by viscosity, UV, HPLC and NMR measurements. The effect of reaction conditions on the DS of modified dextrans was studied. The modified dextrans were used to study the effect of aromatic and al

Inom retaillitteraturen har det länge talats om upplevelseskapande i butik. För en butiks atmosfär spelar många faktorer roll och centreras ofta kring subtila element som musik, doft och färg. I bageriet är temperaturen av stor betydelsen, men även trängseln och det som betraktas som den genuina atmosfären. Vad betyder det för vår upplevelse att vi måste stå en stund innanför dörren innan vi ens k

Nationella beslut om miljöåtgärder påverkar människors vardagsliv på många olika sätt. Med antagandet av kretsloppslagen följde att varje hushåll skulle sortera sina hushållssopor för att gå till återvinning inom industrin eller till förbränning och energiproduktion. Miljömärkning och energimärkning av produkter gör det möjligt för konsumenten att göra informerade val så att miljöpåverkan på natur

Large-scale software development generates an ever-growing amount of information. Multiple research groups have proposed using approaches from the domain of information retrieval (IR) to recover traceability. Several enhancement strategies have been initially explored using the laboratory model of IR evaluation for performance assessment. We conducted a pilot experiment using printed candidate lis

Modelica has in its language support for describing discontinuities; so-called events. Modern integrating environments; like Assimulo; provide elaborated event detection and event handling methods. In addition; the overall performance of a simulation of models with discontinuities (hybrid models) depends strongly on methods for restarting integration after event detection. The presented paper revi

Popular Abstract in Swedish Autonoma nervsystemet är den delen av nervsystemet som vi inte kan styra viljemässigt och som reglerar organismens grundläggande livsprocesser som andning, matsmältning, ämnesomsättning och blodcirkulation. Autonoma nervsystemet förser praktiskt taget alla inre organ med nerver. Det indelas i en sympatisk och en parasympatisk del med i huvudsak motsatta effekter på kropAbstract The aims of the present thesis were to examine neuropeptide Y (NPY) responses in different human and guinea pig vascular beds and in cultured human vascular smooth muscle cells (VSMC) and to characterize, with different NPY agonists and the specific NPY Y1 receptor antagonist (BIBP3226), the NPY receptors involved. NPY-induced strong and potent contractions in human cerebral and subcutan

We report the results of two newspaper reading experiments. We examine how readersÕ eye movements are affected by graphical elements such as photos and information graphics. Control variables in these experiments include size and content of photos, and spatial structure of information graphics. We hypothesized that large photo size and animate photo content would be associated with a local increas

Popular Abstract in Swedish Det finns en föreställning att kvinnor tills nyligen varit åsidosatta inom historieforskningen, något som hävdats bland annat inom kvinno- och genderteoretisk forskning. Mot bakgrund av en genomgång av svenska avhandlingar i historia argumenterar jag för att utvecklingen måste ses i ljuset av historieforskningens utveckling. Det finns en relation mellan vilka fenomen foI am studying the portrayal of women in Swedish dissertations of history from 1890 to 1995. Inspired by Pierre Bourdieu I interpret the production of knowledge as an effect of the rivalry between researchers concerning the dominate positions within the field of history. One strategy in order to reach these positions is to focus on phenomena that previous research has not paid attention to. To show

Feature quantization is a crucial component for efficient large scale image retrieval and object recognition. By quantizing local features into visual words, one hopes that features that match each other obtain the same word ID. Then, similarities between images can be measured with respect to the corresponding histograms of visual words. Given the appearance variations of local features, traditio

In this paper we consider the problem of linear quadratic regulator (LQR) performance for cascade control structures of series coupled systems. The necessary and sufficient condition for the linear quadratic performance of a cascade control structure to achieve the same performance as any given centralized LQR is obtained. The cascade problem could be seen as a special case of the network control

This paper presents a combined experiment and identification procedure, well suited to obtain low-order dynamic models of a patients’ response to continuous drug administration. The experiment requires no a priori information and is of very short duration. The identification method provides both a parametric low-order model, and an estimate of the parameter error covariance. It has been demonstrat

Receptor tyrosine kinases, such as c-Kit, are proteins whose function it is to transduce signals from the environment into the cell leading to complex behaviors such as proliferation, migration, survival and differentiation. Many of these behaviors are deregulated in cancer, which is characterized by uncontrolled proliferation, insensitivity towards death stimuli, migration of tumor cells away fro

Popular Abstract in Swedish Avhandlingen bygger på en studie av halter av stabila organiska miljögifter (PCB) i luften, i nederbörd och i jord. Studien har utförts vid 11 provtagnings platser i Skåne. Vidare behandlas global transport av stabila miljögifter i avhandlingen.In these thesis I have studied the spatial and temporal variations of PCBs in the atmosphere and in precipitation in southern Sweden. Further, soil-air exchange processes of PCBs were investigated. Finally, the long-range transport of PCBs and DDT was studied in the Baltic Sea region and in a tropical vs. a temporal region. On the regional scale there were significant differences in PCB concentrat