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Popular Abstract in Swedish Jag har i den här avhandlingen behandlat problemställningar inom tre olika områden inom astronomin. Det som sammanlänkar dessa är att alla innefattar dubbelstjärnor där avståndet mellan stjärnorna är litet, dvs de har en kort period. De är också alla datorsimuleringar. Jag har satt upp en modell för att betrakta de astronomiska systemen och genom numeriska metoder beräkThis thesis introduces and summarizes four papers dealing with computer simulations of astrophysical processes involving binaries. The first part gives the rational and theoretical background to these papers. In paper I and II a statistical approach to studying eclipsing binaries is described. By using population synthesis models for binaries the probabilities for eclipses are calculated for diff

Stylistic Fronting (SF) is a process that fronts various types of non-subjects to the preverbal position in subjectless clauses (“that gone have”, etc.). With the exception of Icelandic and to some extent Faroese, SF has disappeared from Scandinavian varieties. It is commonly assumed that even in Icelandic it is formal and old fashioned, indicating that it might be on its way out of this language

The climate is changing, something that many scientists correlate to increased emissions of greenhouse gases. The effluent that is considered to have the highest impact on global warming is carbon dioxide, when effect and quantity are taken into account. Most projections however, show that the effect is reversible if the amount of carbon dioxide emissions discharged to the atmosphere is decreased.

Popular Abstract in Swedish Hudfibros, inre organengagemang och autoantikroppar vid systemisk skleros: longitudinell utveckling och effekt på överlevnad. Systemisk skleros kallas ofta för sklerodermi. Sjukdomen tillhör de systemiska bindvävssjukdomarna och handläggs i Sverige oftast av reumatologer. Kardinalsymtomet vid sklerodermi är förhårdnad hud vilket gett sjukdomen den dess namn. Sklero betySystemic sclerosis (SSc) is a connective tissue disease with a highly variable prognosis. Since new treatment strategies are emerging, there is a need for prognostic markers in order to help allocate patients to the optimal treatment. When comparison is made to the general population, there is an increased mortality rate in this study, both in the series as a whole and in the subgroups of men and

Purpose of this paper The purpose of this paper is to present a comparative case study of the procedures and guiding principles in the packaging selection practice of two international companies. Design/methodology/approach A qualitative case study with an inductive approach was conducted. The data was collected through semi-structured interviews, documentation, and field visits. Findings Th

It has previously been shown by the authors that the pre-chamber ignition technique operating with fuel-rich pre-chamber combustion strategy is a very effective means of extending the lean limit of combustion with excess air in heavy duty natural gas engines in order to improve indicated efficiency and reduce emissions. This article presents a study of the influence of pre-chamber volume and nozzl

Popular Abstract in Swedish Skulle p53-målgenen TRIM22 kunna skydda mot cancer uppkomst? Frisk blodbildning En frisk vuxen människa har mellan fyra och sex liter blod, beroende på individens kroppsstorlek. Blodet produceras i benmärgen som finns i skelettbenen. Varje sekund bildas normalt i benmärgen tre till fyra miljoner blodkroppar från våra stamceller. Blodkropparna är specialiserade celler The tumor suppressor gene p53 is a transcription factor that mediates cell cycle arrest, apoptosis and differentiation. p53 mediated differentiation of leukemic cells depends on the transcriptional activity of p53 but so far no obvious differentiation inducing target gene has been identified. Using a cDNA microarray analysis, I identified TRIM22/Staf50 as a novel direct target gene to p53. The fun

Popular Abstract in Swedish De arida och semi-arida grässtäpperna i Norra Kina anses vara svårt drabbade av markförstöring, främst genom vind- och vattenerosion, men även genom försaltning. Den rådande uppfattningen är att markförstöring och ökenspridningsproblematiken har eskalerat sedan införandet av de ekonomiska reformerna efter 1978, bl.a. genom en expansion av den odlade arealen på tidigare This study challenges the prevailing assumption that the expansion of cultivated land areas and increasing number of livestock in the agro-pastoral regions of northern China have aggravated the process of land degradation since the start of the rural reforms in 1978. Land-use and productivity trends in the Inner Mongolia Autonomous Region (IMAR), with special attention to the Keerqin steppe region

The conceptual shift in the expectations of the wireless users from voice towards multimedia, from availability towards acceptable quality, and from stand-alone towards group-oriented computing has a significant impact on today's networks in terms of the need for mobility, quality of service (QoS) and multicasting. Ad hoc networks, being independent of any fixed infrastructure, can provide mobile

Background: The European Molecular Genetics Quality Network (EMQN) was formed in order to improve external quality assessment for molecular genetic testing in Europe. From 1999 to 2002 it received funding from the European Union under the Standards, Measurement and Testing programme (contract no. SMT4-CT98-7515). Since then, its maintenance has been supported through subscription of the participan

An extensive research program, dealing with fire growth on combustible wall lining materials, has been ongoing in Sweden over the last decade. Several lining materials were tested in bench-scale fire tests in order to derive basic material flammability parameters. The same materials were also tested in a full scale room test and a 1/3 scale room test for two different scenarios, A and B. Scenario

Recent research on life in extreme environments has shown that some microorganisms metabolize at extremely low temperatures in Arctic and Antarctic ice and permafrost. Here, we present kinetic data on CO2 and (CO2)-C-14 release from intact and C-14-glucose amended tundra soils (Barrow, Alaska) incubated for up to a year at 0 to -39 degrees C. The rate of CO2 production declined exponentially with

The autonomic nervous system (ANS) and hypothalamic-pituitary-adrenal (HPA) axis are reported as activated in excess in the morbidly obese state and, therefore, changes after weight loss can be anticipated. The aim of this study was to investigate the impact of a massive (similar to30%) weight reduction on the activation of the HPA axis and the ANS following bariatric surgery. Eight (7 women, 1 ma

Den svenska arbetskraften har blivit äldre under 1900-talet. Under vissa perioder har denna åldrandeprocess accelererat, medan den har avtagit under andra perioder. I denna studie undersöks vilken roll dessa förändringar i åldersstrukturen spelar för genomsnittlig arbetsproduktivitet och ekonomisk tillväxt. Olika åldersgrupper besitter olika typer av humankapital, eftersom den individuella produktIn the 1900s the Swedish labour force underwent an ageing process, accentuated in some periods and stagnant in others. This study inquires into how, and to what extent, these demographic shifts in the labour market explain changes in average labour productivity and economic growth. Different age groups possess different types of human capital, leading to changes in individual productivity over the

The Prototype Repository, at the Aspo HRL (Hard Rock Laboratory), is a demonstration project for the deposition of spent nuclear fuel, and provides a full-scale reference for testing predictive models relating to a spent nuclear fuel repository, both its individual components as well as the complete system. The final layout involves six deposition holes, four in an inner section and two in an oute

In this thesis, theoretical models are applied to study some aspects of intrinsically disordered proteins, i.e. proteins that partly or entirely lack a stable native structure. In particular, focus is on peptide binding and aggregation. Knowledge about these mechanisms is important for understanding how proteins interact with each other and how mutations can affect the function and sometimes give

Abstract in UndeterminedCompanies in the food industry are driven to improve their traceability for several reasons. The primary reasons are food safety and quality. Another is the response to the increased interest among consumers in imperceptible product attributes such as organic, fair trade, dolphin-safe and non genetically modified (non-GMO). Such attributes are hard to distinguish and thus r

Researchers who desire to bring about change in organizational settings require approaches to inquiry which can go beyond superficial appearances and prejudice. In seeking to go beyond mere examination of socio technical systems researchers have developed a proliferation of different approaches. Many of these have drawn upon social and human sciences to ground methods and assumptions in philosophi

Popular Abstract in Swedish Lunds strängfragmenteringsmodell beskriver hur färgade partiklar (kvarkar och gluoner, tillsammans kallade partoner) som produceras vid högenergetisk partikelkollisioner omvandlas till färgneutrala hadroner. Denna avhandling utvecklar och utforskar ett alternativt tillvägagångssätt till modellen. Den nya infallsvinkeln förbättrar modellen för system som består av många