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We investigated the wear characteristics and clinical performance of four different total hip joint articulations in 114 patients. Wear and migration was measured by roentgenstereophotogrammetric analysis at five years or at the last follow-up. The mean annual wear was 0.11 mm for a stainless steel/Enduron articulation, 0.34 mm for stainless steel/Hylamer cup, 0.17 mm for zirconium oxide ceramic/E

This paper discusses the medieval castle and town Sölvesborg in Blekinge. It was a typical motte and bailey castle consisting of a huge brick tower built on an artificial mound surrounded by an inner moat and a large outer bailey. The castle, which was partly excavated in the 1940’s, 1970’s and in the 2010’s, functioned as the royal Danish castle that controlled Blekinge in the Middle Ages. It has

Electron and X-ray beams originating from compact laser-wakefield accelerators have very small source sizes that are typically on the micrometre scale. Therefore, the beam divergences are relatively high, which makes it difficult to preserve their high quality during transport to applications. To improve on this, tremendous efforts have been invested in controlling the divergence of the electron b

The present paper shows that cross‐section demeaning with respect to time fixed effects is more useful than commonly appreciated, in that it enables consistent and asymptotically normal estimation of interactive effects models with heterogeneous slope coefficients when the number of time periods, T , is small and only the number of cross‐sectional units, N , is large. This is important when using

The purpose of this study is to examine what keeps an abused woman in a violent relationship and what further on causes her to leave the relationship. I have explored the questions through a qualitative method by analyzing podsections from women with experience of abuse. The results have mainly been analyzed through Thomas J Scheff's theory about social interaction and Helen Rose Fuchs Ebaugh

Genom osteohistologiska analyser kan stora mängder information erhållas. Förutom möjligheten att uppskatta åldern och mognadsgraden hos ett djur kan tillväxtsmärken i skelettet, så kallade ’growth marks’ eller GM, också innehålla information om benens tillväxtshastighet, djurets tillväxtstrategi och till och med levnadssätt. Denna studie avhandlar histologin hos fossiliserade ben tillhörande en haOsteo-histology provides information on age, growth strategies, and lifestyles of both recent and ancient animals. This study deals with the histology of fossilized bone from three groups of tetrapods – sea turtles, ichthyosaurs and plesiosaurs – all secondarily adapted to marine life, but with rather different bone microstructures. As a result of extensive vascularization (i.e. osteoporosis), ich

This thesis sets out to discuss the use of domestic animals (cattle, sheep/goat and pig) at the Neolithic site of Rävgrav in Scania, southern Sweden. The osteological analysis of bone elements from Rävgrav reveals a great dependence on domestic animals, and a focus on meat production, rather than secondary products, at the site. This conclusion is based on age and sex distribution of the three spe

Biologisk mångfald i urban miljö har visats sig ha stor betydelse för människans rekreation och fysiska och psykiska hälsa. Samtidigt förbättras stadens hälsa genom de bullerdämpande, luftrenande och klimatförbättrande egenskaper som vegetationen har. Syftet med denna undersökning är att utföra en temporal och rumslig analys med avseende på antal och utbredning av rödlistade kärlväxter i GöteborgsThe importance of green areas in urban environment has over the last decades, become more and more evident. The physical and psychological health of people is improved by having green and diverse surroundings. Positive effects from vegetation for the city itself are for example, improved air quality and climate. The aim of this study was to investigate temporal and geographical changes of red list