In this thesis, some of the phenomena occurring in plates and cylindrical bars subjected to dynamic loading are investigated. Numerical simulations using a dynamic finite element code are performed for a number of different sized specimens with various initial surface imperfections. Typically imposed loading velocities are in the range 10m/s

Vad är egentligen socialt arbete? Är det att likna vid en konst där socialarbetaren med fantasi och uppfinningsrikedom skapar relationer till människor som har problem och hjälper dem att hjälpa sig själva? Eller är socialt arbete en profession som baseras på forskning, kunskap och beprövad erfarenhet? Det har länge saknats en grundbok som lyfter fram förhållanden som är specifika för socialt arb

Spatially coupled regular LDPC code ensembles have outstanding performance with belief propagation decoding and can perform close to the Shannon limit. In this paper we investigate the suitability of coupled regular LDPC code ensembles with respect to rate-flexibility. Regular ensembles with good performance and low complexity exist for a variety of specific code rates. On the other hand it can be

The tensile and compressive properties of acrylic bone cement containing iohexol acetate (IHA) were investigated. The IHA monomer was prepared with 4 g of IHA dissolved in 20 ml of palacos monomer, later mixed with 36 g of palacos powder. The ultimate tensile strength (UTS) and ultimate tensile strain of IHA cement was compared with Palacos R. The IHA cement show significantly higher UTS and ultim

It is reasonable to consider that those who arranged the material accoutrements of mortuary practices, i.e. the burial, were making a more or less conscious statement about cultural identity. At least we archaeologists usually assume this to be so. An interesting case can be found in the mortuary practices ascribed to the Battle Axe culture from the later Middle Neolithic1 (2800–2350 cal BC) in so

Popular Abstract in Swedish Hjärtsvikt är ett sjukdomstillstånd som blir allt vanligare i vårt samhälle i takt med att människor blir äldre och att man idag räddar allt fler människor till livet efter hjärtinfarkt. Som namnet antyder sviktar hjärtat, det kan inte pumpa ut den mängd blod som krävs för att tillgodose kroppens behov av syre och näringsämnen. Sjukdomen indelas i olika svårighetsgraderCongestive heart failure is accompanied with increased circulatory levels of several vasoregulatory neurotransmitters and hormones which affect the outcome of this disease. In this thesis the blood levels of several vasoactive peptides in humans with congestive heart failure and their effects on the vasculature by the use of an animal model of heart failure were studied. Patients with congestive

Abstract not available

Due to the increasing power requirement and the limited available space in vehicles, placing the heat exchanger at the roof or the underbody of vehicles might increase the possibility to handle the cooling requirement. A new configuration of the heat exchanger has to be developed to accommodate with the position change. In this paper, a countercurrent heat exchanger is developed for position on th

Abstract in UndeterminedThe make-or-buy decision is analyzed in a simple framework combining contractual incompleteness with the existence of an imperfect but contractible performance measure. Contractual incompleteness gives rise to two regimes, identified with make and buy. The performance measure on which comprehensive contracts can be written is imperfect in the sense of being subject to manip

Lattice Boltzmann method (LBM) is alternative computational method to the traditional computational fluid dynamic (CFD) methods. LBM has the ability to with straightforward computational procedure to handle the detail activity at microscale well for simulation of different transport processes. In this study the focus is on the effects of electrochemical reactions and transport processes in an anod