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Atmospheric aerosol particles have substantial influence on climate and air quality. However, the anthropogenic influence on the atmospheric aerosol is still poorly known. This limits the understanding of past and future climate changes. Additionally, both epidemiological and toxicological studies indicate adverse health effects of inhaled aerosol particles. In order to study the effect of atmosph
Popular Abstract in Swedish Denna avhandling behandlar en speciell typ av felrättande koder som kallas tailbitingkoder. Syftet med en felrättande kod är att korrigera fel som kan uppkomma på grund av brus och störningar då digital information överförs från sändare till mottagare.Tailbiting is a method to terminate convolutional codes into block codes. We call these block codes tailbiting codes. This thesis focuses on the encoding of tailbiting codes. The tailbiting method is carefully investigated. Conditions for when the tailbiting method fails are given, and methods for the proper initialization of the encoder are presented. Furthermore, the minimum distances of the tai
Popular Abstract in Swedish Våra kroppar är uppbyggda av celler. Dessa celler har olika funktioner beroende på var i kroppen de finns. Varje cell tar upp näring, omvandlar den till energi, och energin används för att cellen ska kunna fortleva och utöva specialiserade funktioner samt eventuellt reproducera sig. Kolhydrater är viktiga beståndsdelar i celler. De flesta av oss förknippar kolhydrater Proteoglycans (PGs) is a class of highly anionic macromolecules that consist of one or more linear polysaccharide chains (glycosaminoglycans, GAGs) covalently attached to a core protein. The biological functions of PGs are mainly due to the interactions of GAG chains with various protein ligands and regulatory factors, such as cytokines and growth factors. PGs and GAGs are critical for a diverse s
Popular Abstract in Swedish Från början användes uttrycket "mannen i ledet" bara om meniga soldater, men det är också ett bildligt uttryck med innebörden gemene man, gräsrot, medlem på fältet/gräsrotsnivå/verkstadsgolvet. Den här avhandlingen handlar om unga män som under mitten av 1990-talet gjorde lumpen på ett pjäskompani vid Wendes artilleriregemente i skånska Hässleholm. ”Pjäs” betyder kanoneThis dissertation deals with young men who in the mid 1990s made their military service at a cannon company at Wende’s artillery regiment in the scanian town Hässleholm. ”Cannon” refers not only to cannons, but also to haubitses, grenade-throwers and other heavy arms. The focus, however, is on cultural and social aspects of everyday military service. What does actually happen in the encounter betw
We present new polynomial-time approximation schemes (PTAS) for several basic minimum-cost multi-connectivity problems in geometrical graphs. We focus on low connectivity requirements. Each of our schemes either signifi- cantly improves the previously known upper time-bound or is the first PTAS for the considered problem. We provide a randomized approximation scheme for finding a biconnected graph
Popular Abstract in Swedish Polymerer och tensider är molekyler vi stöter på i vårt vardagliga liv, när vi bär hem våra matvaror i plastkassar, tvättar håret, målar huset eller tar en värktablett. Klassificeringen polymer är väldigt bred och innefattar allt från naturliga polymerer som cellulosa, till syntetiska polymerer som polystyren. Polymerer består av små, repeterande enheter, kallade monomeComplexes formed between oppositely charged polyions and surfactant ions are known to have very rich phase behaviour in bulk solution. The work in this thesis investigates the possibilites of using such complexes as surface coatings. Stoichiometric polyion-surfactant ion complexes “complex salts” (CS) consisting of alkyltrimethylammonium surfactant ions and polyacrylates are typically insoluble i
Popular Abstract in Swedish Dysfagi är ett symptom på onormal sväljningsförmåga. Detta symptom kan förekomma i samband med många olika sjukdomstillstånd men är vanligast i samband med olika neurologiska sjukdomar t ex stroke. Symptomen kan variera från en lätt känsla av upphakning och svårigheter att svälja specifik föda till livshotande kvävningsanfall. Logopeder har de senaste decennierna tagit In this study simultaneous videoradiography and intraluminal manometry (videomanometry) have been used in combination in three studies to analyze how different therapeutic strategies affect the physiology of swallowing in healthy volunteers and in patients with pharyngeal dysfunction. Analyses of healthy volunteers showed few significant measurable effects on the pharyngeal swallow. Some decreased
Nematode-trapping fungi are soil-living organisms that have the ability to form infection structures, traps to capture nematodes. Many nematode species are parasites on plants and animals, which have resulted in an interest to use the nematode-trapping fungi as biological control agents. In order to understand more about the genomic diversity and evolution of parasitism among these fungi, several
Background: Urokinase-type plasminogen activator (uPA) and its inhibitor (PAI-1) play essential roles in tumor invasion and metastasis. High levels of both uPA and PAT-1 are associated with poor prognosis in breast cancer patients. To confirm the prognostic value of uPA and PAI-1 in primary breast cancer, we reanalyzed individual patient data provided by members of the European Organization for Re
Popular Abstract in Swedish Med ett stokastiskt fält (random field) kan man matematiskt modellera en yta vars struktur och variationer i större eller mindre utsträckning kan beskrivas som slumpmässiga. Ett typexempel är havsytan. Det finns vissa ''regler'' för hur den kan se ut, men det exakta utseendet hos en viss våg uppfattas som slumpmässigt. Reglerna omfattar bland annat medelnivån, huIn this thesis the focus is on crossing points in random fields and the probability distributions of various crossing variables in different applications. The crossing points are generalisations to random fields of points of level crossings by stochastic processes. Only crossing events that occur at distinct points in the parameter space are considered, for example stationary points (zero-crossing
Popular Abstract in Swedish Avhandlingen behandlar olika aspekter av produktivitet och ekonomisk tillväxt i Afrika och består av fyra kapitel. I det första kapitlet utförs en analys av de faktorer som påverkar Afrikas tillväxt på lång sikt. Analysen är baserad på en studie av ett antal Afrikanska länder som genomgått stark ekonomisk tillväxt under längre perioder. Studiens främsta slutsatser är atThe thesis comprises an introductory chapter and four research papers. The introductory chapter provides a brief overview of recent economic growth performance in Africa, places the individual papers into a coherent context, summarizes the main findings, and discusses their relevance for economic policy. The first paper, The Role of Capital Accumulation, Adjustment and Structural Change for Take-
Background. The development of fluid and salt retention is a potential problem for all peritoneal dialysis (PD) patients. Sodium removal by the peritoneum is predominantly determined by convective fluid loss but influenced by diffusion and sieving due to free water transport as predicted by the three-pore model (TPM). The aim of the study was to establish the effect of transport status, dwell leng
Popular Abstract in Swedish Studien presenterar en relationell ansats till förhandlingar, dvs en förhandlingsanalys i vilken relationerna mellan aktörerna står i centrum. Det innebär att istället för att se till enskilda förhandlares strategier etc, läggs tonvikten vid att förstå interaktionen mellan förhandlarna. Således har studier som söker slå fast nationella särdrag eller kulturellt betingade
Popular Abstract in Swedish Den danska riksbildningen presenteras vanligen som en linjär process som knyter ihop forntida hövdingar med den moderna nationalstaten. Avhandlingen fokuserar de små berättelserna bortom den stora berättelsen om Danmark. Avhandlingen argumenterar för att den tidigare forskningen kring den danska riksbildningen kan delas in i tre huvudlinjer: 1. Den danska riksbildningeThe formation of the kingdom of Denmark is generally presented as a linear process linking ancient chiefs to the modern nation state of Denmark. This dissertation focuses on the small stories behind this great narrative of Denmark. The purpose is to show that there never was any formation process. Instead, encounters between people in the local landscapes and the Danish kingdom were both considera
The function of a paper machine is to form the paper sheet and remove the water from the sheet. A modern paper machine is divided into three main parts, the wire section, the press section, and the dryer section. Although the dryer section is only responsible for removing less than 1% of the water volume in the original stock to the head box, this is the part of the paper machine that, by far, con
Popular Abstract in Swedish Den i Malmö verksamme arkitekten Harald Boklund (1868-1924) är avhandlingens huvudperson. Vi får följa hans liv och verksamhet från direktörsvåningen på Konstakademien i Stockholm, över studie- och praktikåren i kejsartidens Berlin och det produktiva kompanjonskapet med August Lindvall i industrialismens Malmö till hans roll som föreningsmänniska, arkitekt, kritiker ochThe major part of this thesis is dedicated to a biography of the Swedish architect Harald Boklund (1868-1924), but also deals with the problematic concepts of cosmopolitism, regionalism and National romanticism i Scanian architecture 1890-1930. Harald Boklund was the son of Johan Boklund, a famous painter and director of the Swedish Academy of Fine Arts in Stockholm. Harald Boklund got his educati
Purpose This study seeks to investigate the long-term public health burden of Hodgkin lymphoma (HL) in terms of work loss following contemporary treatment protocols and associations with established treatment complications and lymphoma relapse. Methods We identified 1,989 Swedish HL patients (1,082 with clinical information) aged 18-60 (median 33) years at diagnosis 1992-2009, and matched 1:4 to p
OBJECTIVE: To study whether the incidence and characteristics of acute mastoiditis in children changed in Sweden following the introduction of new guidelines for diagnosis and treatment of acute otitis media advocating "watchful waiting" as an option in children 2-16 years of age with uncomplicated acute otitis media. METHODS: The records for all patients treated for mastoiditis during 1993-2007 a
BACKGROUND: It is well established that parity and use of oral contraceptives reduce the risk of ovarian cancer, but the associations with other reproductive variables are less clear. METHODS: We examined the associations of oral contraceptive use and reproductive factors with ovarian cancer risk in the European Prospective Investigation into Cancer and Nutrition. Among 327 396 eligible women, 878
