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The polymer PTFE has become an important and widely used sealing material in the valve industry in recent years. It provides good strength and low friction, but it is sensitive to stress relaxation, i.e. loss of stiffness with time. This in turns may cause problems with leaking seals. The objective of this master’s dissertation is to perform a stress analysis of the PTFE sleeve used in an indust
This is a master thesis about how to be able to clean an open device during assembly for the company of McNeil AB. McNeil AB is a company in Helsingborg, Sweden, producing the Nicorette brand, which is a nicotine based product line which helps people stop smoking. McNeil AB's problem was that they had some contamination in their mouth spray product and thus a solution for the cleaning of a via
Situated in a polarized debate on prostitution and sex work, this thesis sets out to explore the characteristics of the Sex Workers Rights Movement in a contemporary Danish context. The thesis builds on respectively a critical theoretical and a social constructivist epistemology. It identifies two main opposing approaches to prostitution and sex work in respectably an “anti-prostitution-” and a “p
This master's thesis is a study on the gender system of the Swedish dialect spoken in Jämtland, a province in northern Sweden. The Jämtlandic dialect preserves to a large extent the three-gender system that was present in Old Swedish, in which nouns can be either masculine, feminine or neuter. The three-gender system manifests in anaphoric pronouns and as agreement in the noun phrase. However,
In order to apply combustion feedback control in diesel engines to control pollution formation, good models are needed to estimate the states. One of those would be NOx levels which are regulated by European law. There are conventional sensors on the market that can measure NOx but these are too slow for in-cycle feedback control. The purpose of this thesis was to derive a model to estimate NOx wh
This research paper aims to identify how womanhood is constructed in the Soviet TV-movies of the Stagnation era. The thesis is based on the theoretical background in the areas of gender constructions in Western media, gender constructions in Soviet society, and gender constructions in Soviet cinematography. The methodology of discourse analysis and the method of discursive psychology are used to i
The aim of this explorative study is to gain knowledge about the question of identities formations in different socio-cultural contexts. This is done by looking at the specific case of the Oromo people living in a larger community (Minneapolis, USA) as compared to living in a smaller group (Stockholm, Sweden). The case of the Oromo people is investigated in light of past historical, political, soc
This study focused on expression, purification and functional characterization of three key proteins (Urc1p, Urc2p and Urc8p) in the newly discovered uracil catabolism (URC) pathway. A novel expression system was established by using Saccharomyces kluyveri as a host organism for expression of 6-His tagged Urc1p and Urc2p. Moreover, URC8 gene was cloned in pET151/D-TOPO vector and expressed in Esch
Dowry payments from the family of the bride to that of the groom were rarely encountered in Kerala during the early twentieth century, but now are almost universal. Based on an examination of historical documents, including legislative debates, court cases, and reports, the way dowry was explained in the past is compared with the results of 200 contemporary interviews to determine its current rati
THE HUNTINGTON cluster (USNM 536849; Fig. 1) measures 4.1 mm in total length and is comprised of five elements of the maxillary apparatus; the first and second pair of maxillae (right and left MI and MII) and the basal plate (Bp) fitted into the bight of the right MI (for descriptive terminology for ramphoprionids, see Kielan-Jaworowska, 1966; Eriksson, 2001; Fig. 2). Both the MI are broken and la
Popular Abstract in Swedish Reumatoid artrit Reumatoid artrit (RA), på svenska ledgångsreumatism, är den vanligaste kroniska, inflammatoriska ledsjukdomen (artriten) bland människor. I Sverige är förekomsten i befolkningen omkring 0,7%, och bland 100 000 personer insjuknar ca. 50 årligen med denna diagnos. Könsfördelningen är dock ojämn, med en mer än dubbelt så stor risk för kvinnor att utvecklaObjectives: To study: (I) the impact on cost-utility analyses of applying different national EuroQol 5-Dimensions (EQ-5D) preference sets; (II and III) whether, in methotrexate-refractory, early rheumatoid arthritis (RA), the addition of infliximab results in superior health-related quality of life (HRQoL) and may be considered cost-effective, as compared to adding sulfasalazine and hydroxychloroq
Flying animals are capable of navigating through environments of different complexity with high precision. To control their flight when negotiating narrow tunnels, bees and birds use the magnitude of apparent image motion (known as optic flow) generated by the walls. In their natural habitat, however, these animals would encounter both cluttered and open environments. Here, we investigate how larg
Diabetes mellitus is one of the most common endocrine disorders in dogs and is commonly proposed to be of autoimmune origin. Although the clinical presentation of human type 1 diabetes (T1D) and canine diabetes are similar, the aetiologies may differ. The aim of this study was to investigate if autoimmune aetiology resembling human T1D is as prevalent in dogs as previously reported.
The inclusion of environmental variation in studies of recruitment is a prerequisite for realistic predictions of the responses of vegetation to a changing environment. We investigated how seedling recruitment is affected by seed availability and microsite quality along a steep environmental gradient in dry tundra. A survey of natural seed rain and seedling density in vegetation was combined with
Haem (protohaem IX) analogues are toxic compounds and have been considered for use as antibacterial agents, but the primary mechanism behind their toxicity has not been demonstrated. Using the haem protein catalase in the Gram-positive bacterium Enterococcus faecalis as an experimental system, we show that a variety of haem analogues can be taken up by bacterial cells and incorporated into haem-de
Background/Aim: Matrix metalloproteinases (MMPs) are involved in cancer biology. Expression of MMP7 (matrilysin) in colorectal cancer is associated with metastatic disease even though it is expressed in most tumour states. In the present study, our purpose was to analyze MMP7 in bowel and lymph nodes of different tumour stages and to evaluate its expression as a cancer biomarker. Patients and Meth
