Filetype
This thesis has been performed at Saab Technologies in Gothenburg. Saab is a global defense- and security company that specializes in air-, land and marine defense. Saab in Gothenburg develops effective solutions for monitoring, warning, location and defense systems. The thesis work which has been initiated by Saab, involves development of methods and tools in order to dimension the network compon
Exacerbation frequency is central in treatment strategies for chronic obstructive pulmonary disease. However, whether chronic obstructive pulmonary disease patients from the general population with frequent exacerbations continue to have frequent exacerbations over an extended period of time is currently unknown. In this study, we aimed to investigate the stability of the frequent exacerbator in a
Virtual worlds are online communities in which individuals are able to interact with each other in real time. Growing rapidly since 1996, the population of these virtual worlds has become several millions. The advent and prosperity of virtual worlds reveal challenges worth exploring on business, society, politics, communication, education, technology, ethics, etc. The focus of this study is one of
Until now, computationally designed enzymes exhibited low catalytic rates1, 2, 3, 4–5 and required intensive experimental optimization to reach activity levels observed in comparable natural enzymes5, 6, 7, 8–9. These results exposed limitations in design methodology and suggested critical gaps in our understanding of the fundamentals of biocatalysis10,11. We present a fully computational workflow
This paper contains a theoretically and empirically based analysis of infrastructures and co-operational patterns in a Scandinavian Internet consulting company. The purpose of the analysis originated from the hypothesis that Web-based Information Systems could especially facilitate work in distributed organisations, this as a platform for supporting collaboration, communication and co-ordination w
GABA is the main inhibitory neurotransmitter in the mammalian CNS. GABA in the brain is commonly associated with a fast, point-to-point form of signalling called synaptic transmission (phasic inhibition), but there is growing evidence that GABA participates in another, slower and more diffuse form of signalling often referred to as tonic inhibition. Unresolved questions regarding tonic neuronal in
Popular Abstract in Swedish I många utvecklingsländer i tropiska klimat leder den snabba urbaniseringen till många problem, bl a försämrad termisk komfort i utemiljön. Detta har negativa följder för människors hälsa och välbefinnande och påverkar sociala och kommersiella aktiviteter utomhus negativt. Följaktligen är det mycket viktigt att åstadkomma komfortabla mikroklimat i urban miljö. Den huvuIn many developing tropical countries, rapid urban growth leads to several problems, including increased thermal stress. This has negative consequences for people's health and well-being, and affects social and commercial outdoor activities negatively. Consequently, the creation of thermally comfortable microclimates in urban environments is highly important. The main aim of this thesis is to dee
Context. On the order of 20% of the very metal-poor stars in the Galaxy exhibit large carbon enhancements. It is important to establish which astrophysical sites and processes are responsible for the elemental abundance patterns of this early Galactic population. Aims. We seek to understand the nature of the progenitors of three main-sequence turnoff Carbon-Enhanced Metal-Poor (CEMP) stars, CS 310
Eyes of the hoverfly Eristalis tenax are sexually dimorphic such that males have a fronto-dorsal region of large facets. In contrast to other large flies in which large facets are associated with a decreased interommatidial angle to form a dorsal 'acute zone' of increased spatial resolution, we show that a dorsal region of large facets in males appears to form a 'bright zone' of increased light ca
The molecular relationship of placental mammals has attracted great interest in recent years. However, 2 crucial and conflicting hypotheses remain, one with respect to the position of the root of the eutherian tree and the other the relationship between the orders Rodentia, Lagomorpha (rabbits, hares), and Primates. Although most mitochondrial (mt) analyses have suggested that rodents have a basal
Apomorphine, given subcutaneously (s.c.), induces erection and bladder overactivity in rats through stimulation of dopamine (D1- and D2-like) receptors in the central nervous system. In paraplegic patients, apomorphine was reported to cause bladder overactivity. This suggests that apomorphine may have a spinal site of action also for stimulation of erection. The present study was initiated to eval
A solvent-free microextraction technique based on liquid-gas-liquid microextraction was investigated for the extraction and preconcentration of 2,4-di-tert-butyl phenol from aqueous samples. In this study 16 mu L NaOH 1 M as acceptor phase was introduced in the lumen of a polypropylene hollow fiber, with one of its ends heat-sealed. A small piece (about 2 cm) of metallic wire was used to seal the
The purpose of this study was to describe child health centre (CHC) nurses' views of managing parental groups during early childhood. All 311 CHC nurses working within the Swedish CHC system in one county were asked to complete a web-based questionnaire. Findings showed that although the CHC nurses were experienced, several found group leadership challenging and difficult. The need for specialized
We acclimated two species of sculpin, the freshwater prickly sculpin (Cottus asper) and the closely related marine Pacific staghorn sculpin (Leptocottus armatus) to freshwater (similar to 0 g/L), brackish water (15 g/L), and seawater (30 g/L) for at least 4 wk and examined the relationships between respiration, ion regulation, gill morphology, and freshwater tolerance. The prickly sculpin successf
Androgenic hormones occur naturally in bird egg yolk and are known to enhance growth in canary and gull chicks. Gil et al. (1999, Science, 286, 126-128) have recently proposed that female allocation of androgens to eggs represents a form of costly maternal investment. This hypothesis predicts that females of high quality or high reproductive potential should invest more yolk androgens in their egg
A separation between mecA+ strains of Staphylococcus aureus and strains lacking mecA was achieved by the disk diffusion assay and the agar dilution method, utilizing disks containing 5 microg of oxacillin and inocula of approximately 5 x 10(5) CFU/spot, respectively, provided that agar with 0 to 0.5% NaCl and incubation at 30 degrees C were employed. The 5-microg oxacillin disks clearly discrimina
Aliment Pharmacol Ther 2011; 33: 578-584 SUMMARY: Background Time-trend analyses of incidence and mortality in bleeding peptic ulcer show divergent results. Aim To conduct a detailed national analysis of hospitalisation of and mortality from bleeding peptic ulcer in Sweden. Method Data from all hospitalisations at departments with primary responsibility for patients with bleeding ulcer in Sweden,
Popular Abstract in Swedish Det finns tre muskeltyper i människokroppen; skelettmuskler, hjärtmuskler och glatta muskler. Skelettmusklerna är de muskler som gör att vi kan röra oss och andas (mellangärdesmuskeln är en skelettmuskel). Hjärtmuskelcellerna är de som gör att hjärtat slår. Den glatta muskulaturen finns på många ställen i kroppen (t.ex. i blodkärl, luftvägar och livmoder) och utför mång
Differential cross sections for Compton scattering from the deuteron were measured at MAX-Lab for incident photon energies of 55 and 66 MeV at nominal laboratory angles of 45degrees, 125degrees, and 135degrees. Tagged photons were scattered from liquid deuterium and detected in three NaI spectrometers. By comparing the data with theoretical calculations in the framework of a one-boson-exchange pot
