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Högt över och långt under den galaktiska disken av Vintergatan svävar gigantiska stjärnhopar som tros ha existerat sedan begynnelsen av galaxen. Astronomer är fram tills idag förbryllade över hur de hamnade där och hur de kommer att utvecklas över tid i sin bana kring galaxen. Något som forskare är säkra på är att den stjärntäta tunga disken hos Vintergatan drar i stjärnorna i de fjärran hoparna mThe evolution of globular star clusters tells the history of the formation of galaxies, how stellar streams might have formed and how the future of the Universe might look like. Although the general theoretical background of the evolution is well understood, it is difficult to conduct accurate and realistic computer simulations of objects containing thousands of interacting bodies. This project in

Popular Abstract in English Among the forms of life found in extreme environments (e.g. high temperatures ‘thermo’ and oxygen deficient ‘anaerobe’), the thermoanaerobic bacteria emerge as a highly evolved and interesting subject of study. Bacteria living as microbial mats in decaying plant material possess a great potential not only to degrade complex biomass but also to produce special chemicals.A novel ethanol-producing thermoanaerobe Caloramator boliviensis 45BT (=DSM 22065T, =CCUG 57396T) was isolated from a hot spring of the Bolivian highlands. C. boliviensis possesses the ability to utilize a wide range of substrates and can efficiently convert hexoses and pentoses into ethanol with concomitant production of acetate, carbon dioxide and hydrogen as by-products of fermentation. However

Field trials in three European countries, the Netherlands, Spain and Sweden were carried out in order to investigate the effects of an in-car speed limiter. The trials were carried out on urban and rural roads including motorways. A so-called unobtrusive instrumented car was used, where all the measuring equipment was hidden. All the speed limit categories in the respective countries, ranging from

The most common form of technology for energy utilization via anaerobic treatment is slurry digestion with a low solids contents, such as sewage sludge or manure. Process control and maintenance are relatively simple, but costs involved with liquid handling and heating favour large, centralised plants. Raising the solids content of a digester to 30% significantly improves the economy of anaerobic

Trichoderma atroviride mutants were developed by using N-methyl-N'-nitro-N-nitrosoguanidine (NTG) treatment and UV-Iight followed by a semiquantitative plate clearing assay on Walseth-cellulose/agar plates. The parent strain of the mutants was an isolate from the Amazonas basin (TUB F-1505), whose identity was established by ITS 1 and 2 and tef1 gene sequence analysis. Strain F-1505 proved to be t

Water calorimetric measurements have been performed in a 180 MeV scanned pulsed proton beam and the absorbed dose determined has been compared with the results obtained using two NE2571 Farmer chambers and the IAEA TRS-398 code of practice. The depth of measurement in water corresponded to a residual range of R-res = 16.5 cm, corresponding to a mean energy of about 150 MeV. Ionization chambers wer

I och med elektrifieringen av energisektorn ställs höga krav på ökad inhemsk produktion av elektricitet i Sverige. På grund av den nuvarande fördelningen, där en stor del av produktionen sker i norra Sverige medan konsumtionen är koncentrerad till södra delarna av landet, är behovet extra stort i elområde 4 (SE4). Ett län som möter extra stora utmaningar är Skåne där självförsörjningsgraden för elThe current electrification of the energy sector puts high demands on increasing domestic electricity production in Sweden. This issue is enhanced by the current regional imbalance between supply and demand, while a major share of electricity generation is located in northern Sweden, consumption is concentrated in the south. Consequently, the need for new production is particularly great in electr

PurposeThe aim of the study is to understand how meaning is assigned to online searching by viewing it as a mundane, yet often invisible, activity of everyday life and an integrated part of various social practices.Design/methodology/approachSearching is investigated with a sociomaterial approach with a starting point in information searching as entangled across practices and material arrangements

Deforestation has wide implications for the environment and especially for those who rely on it for survival. Rural women in many parts of the world often carry a lot of responsibility in gathering resources and maintaining the livelihoods of their families yet face disproportionate impacts due to limited control and access to these vital resources. This qualitative case study aims to give the rur

Surveillance of group A streptococcal (GAS) infections was undertaken as a major component of the European Commission-funded project on severe GAS disease in Europe (strep-EURO). One aim of strep-EURO was to improve the quality of GAS characterization by standardization of methods. An external quality assurance study (EQA) was therefore carried out to evaluate current global performance. Eleven st

The calculation of absorbed dose from internally incorporated radionuclides is based on the so-called specific absorbed fractions (SAFs) which represent the fraction of energy emitted in a given source region that is absorbed per unit mass in a specific target organ. Until recently, photon SAFs were calculated using MIRD-type mathematical phantoms. For electrons, the energy released was assumed to

In order to simplify computational methods based on dynamic programming, a relaxed procedure based on upper and lower bounds of the optimal cost was recently introduced. The convergence properties of this procedure are analysed here. In particular, it is shown that the computational effort in finding an approximately optimal control law by relaxed value iteration is related to the polynomial degre

The aim of the study was to illuminate the families' lived experience after completing a child's cancer treatment. The study took place at a University Hospital in southern Sweden. Interviews were carried out with 10 mothers, eight fathers, four patients and two siblings from a total of 10 families. The interviews were analysed with a hermeneutical phenomenological approach. One essential theme em

Aims: To use a qualitative research study to analyze the experiences of patients with nonspecific chronic orofacial pain with respect to consultations for their pain condition. Methods: Fourteen patients (11 women and 3 men; age range, 21 to 77 years) were strategically selected through a purposive sampling of the chronic orofacial pain patients referred to the Orofacial Pain Unit at the Faculty o

Popular Abstract in Swedish ”Vi kommo överens om att möten innehålla alla livets möjligheter, och att en människa som levat mycket vet mycket om möten om hon alls vet någonting.” Så uttalar den kvinnliga huvudpersonen i Mannen vid min sida (1933) sin övertygelse efter mötet med älskaren. Denna avhandling fokuserar mötet i Elin Wägners trettiotalsromaner. Genom att analysera detta vill avhandlingsfThe aim of this present thesis is to present the Utopian scheme in Elin Wägner’s novels of the nineteen-thirties: Dialogen fortsätter (1932) (“The Dialogue Continues”), Mannen vid min sida (1933) (“The Man by my Side”), Genomskådad (1937) (“Unmasked”) and Hemlighetsfull (1938) (“Mysterious”). With her authorship Wägner was aiming for a new social order, a radical change, polväxling (a shift of pol

Popular Abstract in Swedish Artiodactyla (partåiga hovdjur) är uppdelad i tre underordningar, Suiformes (grisar och flodhästar), Tylopoda (kameler och lamor) och Ruminantia (kor, hjortar, antiloper och giraffer). Studien syftade till att analysera släktskapen mellan de olika underordningarna och ordningen Cetacea (valar) genom att sekvensera mitokondrie DNA och jämföra sekvenserna. I våra släktskArtiodactyla (eved-toed ungulates) and Cetacea (whales) are two mammalian orders that are commonly recognised as sistergroups. Recently it has been suggested that Cetacea originated within Artiodactyla, but the relationships among the different artiodactyl lineages and Cetacea have not been conclusively established. In the present study the mitochondrial genome of the pig (Sus scrofa), the hippopo

In this study, characterization of the binding kinetics and optimization of a magnetic permeability based point-of-care (POC) immunoassay system for quantification of canine C-reactive protein (cCRP) is described. The reagent is based on a two-site heterogeneous immunoassay system utilizing conjugated superparamagnetic nanoparticles (SPION) and silica particles, both particles carrying covalently