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Purpose. To define the association between venous volume as measured with air-plethysmography and the duplex ultrasound measured diameter of incompetent perforator of the lower limb. Patients and methods. Thirty-six patients with chronic venous disease were investigated with air-plethysmography and duplex ultrasound. Venous volume and venous filling time was measured. Venous filling index was calc
Lifetime tests of solar reflector materials are eligible prior to application, to prove the stability of the optical properties. In this work, six reflector materials were aged outdoors and in a climatic test chamber. The surfaces of the samples were inspected using profilometry and optical microscopy. The total and specular reflectance spectra were measured using spectrophotometry and the weighte
Popular Abstract in Swedish Avhandlingen behandlar kapacitet i cirkulationsplatser. Kapaciteten för ett körfält i en tillfart kan beräknas med teorin för kritiska tidsavstånd. Denna bygger på interaktioner mellan fordon med företräde (överordnade fordon) och fordon som skall lämna företräde (underordnade fordon). Det kritiska tidsavståndet är det minsta tidsavstånd mellan två överordnade fordon soProblem: The thesis deals with the capacity of two-lane roundabouts and with vehicle-vehicle interactions there. Method: The interactions and the corresponding capacity are modelled by gap-acceptance theory. Various components of this theory are discussed, models for headways in the multi-lane case and for the estimation of critical gaps for the two major streams being developed and being applied
Conclusions. Preoperative gentamicin in combination with vestibular 'prehab' offers a possibility to reduce postoperative malaise and speed up recovery and may be used for patients undergoing such surgery when there is remaining vestibular function. Objectives. Removal of pontine angle tumours in a patient with remaining vestibular function causes symptoms of acute vestibular loss. A simultaneous
Popular Abstract in Swedish Förbättrad patientsäkerhet och omvårdnad av patienter med höftraktur Intervention granskad i det nationella kvalitetsregistret RIKSHÖFT Varje år drabbas ca 18 000 personer i Sverige av höftfraktur efter fall. Höftfraktur är ett samlingsnamn för två frakturtyper i den övre delen av lårbenet. Den ena frakturtypen är lokaliserad till lårbenshalsen (cervikal fraktur) och dAim: Hip fractures are common and costly. The overall aim of this thesis was to explore how different clinical pathways influence safety and quality of care among patients with a hip fracture and to test the usefulness of the national quality register RIKSHÖFT as a working tool. The aim in paper I was to improve the outcome of patients with a hip fracture through optimized preoperative pain relief
Alberta’s energy sector provides a reliable supply of energy and contributes to the economy of Alberta. In addition to these positive aspects, there are concerns about the environmental, economic and social performance of the energy sector. The purpose of this thesis is to critically examine the production side of Alberta’s energy sector and offer constructive ideas about how the sector could be b
Cardiovascular (CVD) is one of the most common causes of mortality. Apart from known causal risk factors such as smoking, obesity, dyslipidaemia and hypertension, chronic psychological stress has been suggested as a possible independent risk marker, also because the CVD burden follows a social gradient. Another self-reported variable is self-rated health (SRH) which in many studies has ben shown t
Board gaming has to a large degree, been studied based on historical sources. Ironically, this is true even for prehistoric games, where the Icelandic sagas have been used as a starting point for a deductive hunt for the mysterious game Hnefatafl. Later studies of gaming have to a large extent been transferring older research results. According to the author, this has created a rather skewed pictu
Joint Operations at the external borders of the EU are axiomatic for EU’s border management policy and constitute forms of collective action involving the efforts of two or more Member States for the purpose of securing the common borders. Nevertheless, participation in joint operations is based on voluntarism and guided by the principle of solidarity, which should act as catalysts encouraging MSs
Despite longstanding and far-reaching recognition of the need for social change towards environmental sustainability, the delivery of this transition is proving problematic. Dominant strategies for sustainable development in western countries focus on uncoupling economic development from ecological harm. Scandinavia epitomises this approach to green economy, especially in the transition to a low-c
In this thesis I explore the relationship between the transition movement and social and ecological justice. Through a case study of Transition Guelph (TG), a transition town in Ontario, Canada, I discuss how TG creates a language based on binary concepts embedded in unequal power relations, and how this language informs their actions and activism. I also discuss how language affects their own org
The greater wax moth, Galleria mellonella, is a serious pest of honey bees, Apis mellifera, damaging the quality of honey produced and creating a problem for bee industry. Mating behaviour in this species takes place with the help of a male-released pheromone tracked by females over long distances. Previously, the male pheromone was identified to be a blend of nonanal and undecanal but this aldehy
In the interaction between two ecologically-associated species, the population structure of one species may affect the population structure of the other. Here, we examine the population structures of the aphid Metopeurum fuscoviride, a specialist on tansy Tanacetum vulgare, and its specialist primary hymenopterous parasitoid Lysiphlebus hirticornis, both of which are characterized by multivoltine
Parkinson´s disease is characterized by a progressive degeneration of the nigral dopaminergic system. Treatment of disease symptoms using L-DOPA frequently induces side effects such as L-DOPA-induced dyskinesia. New therapeutic approaches are aimed at preventing neurodegeneration or restoring the dopaminergic system by fetal dopaminergic transplants. In this thesis work, we evaluated the neuroprot
Methods for facile synthesis of symmetric and unsymmetric functionalized analogues of Tröger's base were developed with use of 2,8-dibromo-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine (2) as the starting material. C(2)-symmetric 2,8-disubstituted analogues of Tröger's base (4a-f) were synthesized via double bromine-lithium exchange of 2 followed by quench with electrophiles. Desymmetrization via
Ion microprobe U-Th-Pb analyses of zircons in variably metamorphosed and veined orthogneisses in the southern part of the parautochthonous Eastern Segment of the Sveconorwegian (1.20-0.90 Ga) orogen, SW Sweden, broadly define two age groups, oscillatory and sector zoned magmatic zircon cores yield 1.70-1.68 Ga while overgrowths, homogeneous crystals, and recrystallized domains in primary zircon yi
