For several years Uppsala University together with several companies has been involved in a WISENET project aimed at improving railway transport security. By placing a sensor system near the wheels of each wagon, the temperature of the bearings can be measured and transmitted to a collector placed centrally on the wagon. This in turn transmits the collected data to RFID receivers placed intermittently along the railway.As the signals are transmitted wirelessly, problems may occur as the antennas get dirty or coated with ice and snow. To determine the effects of these coatings, several tests were performed examining the reflection coefficient S11, the impedance Z11 and the efficiency eta of an antenna, and how they varied when various coatings were placed over the antenna. Examined coatings were ice, snow and water to determine the effects of weather, and various metal-based coatings: powdered iron both pure and partially oxidized, and iron ore granules.

Fish-head pendants are one of the characteristic Gotlandic Late Iron Age artefacts. This object has been rather neglected and mainly considered as an insignificant embellishment, normally worn as a neck-collar and seen as an artefact include in the typical Gotlandic set of female jewellery.The fact that the fish-head pendant has a very long life span, which stretches from grave-finds in the Early Vendel Age to hoards in Viking Age as well as secondary usage as brooches in the Early Middle Ages, makes the artefact an excellent starting point for discussions on social practices and change through material culture. It's shown in this study that, contrary to previous beliefs, the normal usages for fish-head pendants is as solitary pendants and not as neck-collars. Neck-collars is shown to have an intricate relation to inhumations for young individuals, whereas solitary pendants are found in cremation deposits for adult individuals, something that relates to a fixed social practice mainly in the period 700-900 AD and that develops from the cremation funeral practice. This particular social practice relates to aspects of attraction and protection and continues in to the 10th century outside of funeral structures, which is shown by the composition of hoard-finds from the 10th century, but is totally absent when the pendants is given a secondary usage as brooches in the end of the 11th and beginning of the 12th century.

This master thesis has been done in cooperation with Sweco Viak AB in Sundsvall. The aimwith the project is to investigate the purifying effect of percolation filter due to iron andmanganese. The overall goal was to investigate how the parameters surface load,sandfractions, and burden time affect the purifying effect. The expectation is to optimize thedesign and find a demouldning of the filter that gives sufficient purifying with a highersurface load. As an attempt to accelerate the curing of the filter, experiments with a layer ofsand which surface has been covered with manganese ore (MnO2) on top of the filter havebeen done.As test filters 10 L bars were used and the experimental work was performed at thewaterworks in Hassela and Munkbysjön.In Hassela different sandfractions were tested.

Animal art is one of the more mystical aspects of Scandinavian Iron Age culture. It has foremost been regarded in the light of art and style history. Interpretation has also ? mainly from the 1990s and onwards ? been made through iconographic analysis. But the problem here is that iconography requires textual analogy, something that the Scandinavian Iron Age lacks.The purpose of this paper is to lift some of the ?mystical fog? that engulfs the scandinavian animal art, by developing a method for interpretation of pre-historic images that evades the flaws in the iconographic method.

By using pollen analysis and 14C-dating, the history of vegetation and land use at the old shieling place (Sw: fäbodställe) Öjingsvallen in Ängersjö parish, central Sweden, was studied. The aim of the study was to answer the following questions: 1) When was Öjingsvallen established as a shieling place? 2) What was the land use at Öjingsvallen? 3) Was the use of Öjingsvallen as a shieling place affected by the agricultural crisis in the 14th and 15th centuries? 4) Is there any relation between the establishment and land use of Öjingsvallen as a shieling place and the historically known increase in the number of shieling sites known to have taken place in the 16th and 17th centuries? 5) Was the use of Öjingsvallen as a shieling place affected by the iron production in the area? According to the study, Öjingsvallen was probably established as a shieling place during the period A.D. 300-700. The main land use at this time was forest grazing.

For several years Uppsala University together with several companies has been involved in a WISENET project aimed at improving railway transport security. By placing a sensor system near the wheels of each wagon, the temperature of the bearings can be measured and transmitted to a collector placed centrally on the wagon. This in turn transmits the collected data to RFID receivers placed intermittently along the railway.As the signals are transmitted wirelessly, problems may occur as the antennas get dirty or coated with ice and snow. To determine the effects of these coatings, several tests were performed examining the reflection coefficient S11, the impedance Z11 and the efficiency eta of an antenna, and how they varied when various coatings were placed over the antenna. Examined coatings were ice, snow and water to determine the effects of weather, and various metal-based coatings: powdered iron both pure and partially oxidized, and iron ore granules.

Early intervention is important on different levels and must be justified as a social and economic long-term investment. There is no doubt about the importance of early detection when helping children/students in need of support. What kind of support that is deemed suitable and who provides the support can be viewed from different perspectives and with different approaches. Seen from a relational perspective the special education process is a long-term process and affects not only the individual but the whole school culture and systems may need changing. This study intends to describe the importance of the learning environment and what efforts are initiated early for students in need of support from the special education point of view.

In many developing countries, among them Vietnam, contamination of agricultural land is a major issue that has public health implications. A fast growing population, rapid urbanization and industrialization have led to air and water emissions of potentially toxic elements (PTEs), such as cadmium (Cd). Earlier studies have shown that individuals with low iron (Fe) and zinc (Zn) status absorb larger quantities of Cd than those of adequate nutritional status. The purpose of this study was to investigate and compare the Fe and Zn intake from the foods consumed by women (15-45 years) in selected households in two agricultural villag-es in the Red River delta in Vietnam. In one of the villages the residents were involved in metal (mainly Fe) recycling activity, whereas in the other village the residents had agricul-tural production as main source of income. Interviews, followed by food intake calcula-tions, were performed.

The aim of this study was to describe the meaning of individual care according to Newborn Individualized Developmental Care and Assessment programs (NIDCAP) to the early born child. The care around the early born child has shown a big importance. NIDCAP incorporates many care aspects that give structure for an individual tailored care. A fast care planning within three days and night after the birth according to NIDCAP has a positive effect for the cognitive development. The early child has showed that the surroundings environment has an important role for their development.

The Christianisation of Sweden is not much about religion. Instead, there is much to be gained by looking at it as a colonial situation with changing social identities and power structures. This is evident by the prevalence of hybridisations in the archaeological material.Some of the material categories that show the clearest example of changes are the burials from the 9th century up until about AD 1200. This is exemplified by two different Iron Age burial sites in Stockholm county, Uppland, Sweden: RAÄ 59, Valsta, in Norrsunda parish and RAÄ 40, Lilla Ullevi, in Bro parish; They both show hybridisation by involving older elements with newer ones during a time period when the church was not quite established in the region yet.The Christianisation of Sweden is a colonial situation, but the research tradition has often also used a colonial lens from the 19th and early 20th century in its approach to the period. This means that the same questions, interpretations and conclusions, often based on written sources, have been continuously reused for a long time, which has had consequences for the archaeology in Sweden..

For several years Uppsala University together with several companies has been involved in a WISENET project aimed at improving railway transport security. By placing a sensor system near the wheels of each wagon, the temperature of the bearings can be measured and transmitted to a collector placed centrally on the wagon. This in turn transmits the collected data to RFID receivers placed intermittently along the railway.As the signals are transmitted wirelessly, problems may occur as the antennas get dirty or coated with ice and snow. To determine the effects of these coatings, several tests were performed examining the reflection coefficient S11, the impedance Z11 and the efficiency eta of an antenna, and how they varied when various coatings were placed over the antenna. Examined coatings were ice, snow and water to determine the effects of weather, and various metal-based coatings: powdered iron both pure and partially oxidized, and iron ore granules.

Objective: The out-of-hospital cardiac-arrest incidence in Sweden averages about 10 000 a year. Whether the victim will survive or not is dependent upon rapid actions according to the chain of survival ? early alarm, early CPR, early defibrillation and early medical treatment. While waiting for the ambulance the victim is completely dependent on immediate help from any bystander, because early CPR improves survival rates by two-three folds. Unfortunately not all bystanders start CPR because of different reasons.

This essay is a study regarding the existence of Bronze Ages and Iron Ages battlefields in Scandinavia and the possibility to trace and find them by using the Battlefield Archaeological Method.Based on a theoretical background and results from historical battlefield research and excavation experiences, the discussion deals with some of the problems and possibilities of applying the Battlefield Archaeological Method on older places. The existence of these battlegrounds is also an unknown factor, and a major part of this study is trying to find evidence of their existence. For that purpose I am using as an example a deeper analysis of an Iron Age battlefield archaeological excavation in Germany in order to compare and draw parallels with the Scandinavian society of that time. I am also using the evolution of weaponry, in particular the sword, to show parallels between the Mediterranean and the Scandinavian societies in the matter of warfare and tactics..

The aim of this thesis is to make a comparison between solitary graves and graves in grave fields from the Roman Iron Age on Gotland, Sweden. Differences in burial customs, morphology, dating, gender, age, grave-goods and social status are compared between 19 solitary graves and graves in three different grave fields in different parts of Gotland. An attempt is made to explain these differences and to discuss which functions the solitary graves had. Discussions about whether it is possible to distinguish social status and gender with the help of grave-goods are also made in connection to the determination of status and sex..

Aim: The aim of this study was to study through papers if early intervention of children and adolescents with deaf-blindness can be facilitated through early intervention programs, cochlear implants (CI) and communication strategies.Method: The method that we used was a literature study of scientific articles through Pubmed and Cinahl databases. The articles reference lists were also studied which lead to that more papers were found.Results: Children and adolescents with deaf-blindness can benefit from early intervention programs, when their caregivers were educated to give appropriate response to the children?s behavior. The interaction between children and their caregivers can improve through an early intervention model. Children and adolescents with Deafblindness have variable results from CI.