The limit for mercury in fish, set by health authorities, is exceeded in about half of the lakes in Sweden. Methyl mercury (MeHg) is the most toxic form of mercury and accumulates in fish. Therefore transformation of inorganic mercury (Hg) to methylmercury (MeHg) is an important process that we need to understand in order to possibly counteract the negative effects of mercury in the environment. The seasonal dynamics of mercury biogeochemistry is likely of great importance for the accumulation of MeHg in the aquatic food web. In thesis the chemical speciation and transformations of Hg and MeHg in bottom waters and sediments is followed in Ängessjön, a small lake located on the east coast in the middle of Sweden. The lake is not directly affected by any industrial pollution and concentrations of Hg in the sediment reflect the atmospheric deposition in this area, as well as processes taking place along the hydrological pathways from soil to lake. Samples from sediment, bottom- and streamwater were collected in average every second month during the period Feb.

This essay is a historiographical analysis of the picture of the transition period between the Bronze and the Iron Ages in Greece presented in A. M. Snodgrass' The Dark Age of Greece and V. R. d'A.

Bakgrunden till detta examensarbete var att Qumex Materialteknik vid ett flertal tillfällen konstaterat att material av typen SS 0725 har uppvisat bristfälliga härdresultat. Materialet, som är relativt nytt på marknaden, är ett gjutjärn av typen segjärn och utmärker sig gentemot andra segjärn på grund av sitt höga innehåll av kisel. Då segjärn enligt den nu gällande EN-standarden klassificeras efter sina mekaniska egenskaper uppstår ett problem gällande SS 0725. Materialet uppfyller de krav som är ställda för EN-GJS-500-7 och hamnar därmed under samma materialbeteckning som ett segjärn med betydligt lägre kiselhalt. Att två material med olika kemisk sammansättning hamnar under samma beteckning kan innebära problem.

This thesis deals with two types of agrarian remains in relation to settlement remains; clearance cairns, low stone walls and house terraces in the area of Northeastern Uppland and the area north of Lake Mälaren, during the middle Iron Age. The aim whit this thesis is trying to get a better understanding of the relation between agrarian and settlement remains in Uppland. Three places have been chosen where these three elements are present and they are interpreted through Richard Whites concept of middle ground but also Landesque capital. The three elements have shown to be expressed in different ways in all three sites. It is possible to see two areas with different traditions, but also to see two areas that closely interact with each other, this opens up for a new discussion around agrarian remains in both areas.

Bakgrund: Denna litteraturstudie handlar om avnavling och när det är optimalt att avnavla det fullgångna friska barnet. Avnavling har länge varit ett diskuterat ämne bland obstetriker, barnmorskor och föräldrar. Föreliggande studie ska bidra till att öka barnmorskans och övrig vårdpersonals medvetenhet om när avnavling bör ske och när det är fördelaktigt för barnet att avnavlas. Rekommendationen är att friska fullgångna barn avnavlas sent om inte situationen kräver en tidig avnavling eller att föräldrarna önskar tidig avnavling pga. donation till biobanken.

Four different kinds of filter-materials with reactive surfaces have been studied concerning their capacity to absorb heavy metals in leachate from a municipal waste deposit. The heavy metals studied were: lead, cadmium, copper, mercury, chromium, nickel and zinc. The leachate contains high levels of dissolved organic carbon (DOC) and has a high pH-value along with a high buffer capacity. These characteristics of the leachate make it difficult to remove pollutants and require efficient filters. The filters that were examined in the report are blast-furnace slag with CaO, sand covered with iron oxides, olivine and nepheline.

It is self evident that our society is an information one. This is true from the things we see around us.The world is now a global village.It just take seconds for communication to be established from one part of the globe to another.What a tremendous achievement for information technology.Among the recent developments of information technology is the scientific wizardary of cyber medicine.The internet has definitely revolutionalised the healthcare industry. Many people in developed countries of the world seek medical information, advice or even buy drugs via the internet.So many websites rise every now and then claiming to provide various medical assistance to patients. But the application of information technology to medicine poses some ethical problems today. It is because of this that cyber medicine attracts my attention in this research.With this research, I hope to offer some recommendations for a morally acceptable cyber medicine .This will help to some extent in solving this all important problem ofcyber medicine for the good of the health care industry and the society at large..

Uppsatsen, Kriskommunikation i ett förändrat medielandskap, är en fallstudie på webbplatsen www.krisinformation.se. Utgångspunkten för uppsatsen är det förändrade medielandskapet och vad det innebär för kommunikation i kris. Uppsatsen berör flera olika hörnstenar som är viktiga för framgångsrik kriskommunikation. Hörnstenarna rör bland annat vilken tillit och vilket förtroende användarna har för Krisinformation.se, dess innehåll samt Internet som medium i den förändring som skett i medielandskapet när det gäller kriskommunikation.Fallstudien undersöker även om det är privatpersoner eller yrkesverksamma som besöker Krisinformation.se. Den undersöker även vad användarna anser är viktigast när de ska ta del av information i en krissituation gällande om informationen är snabb, kortfattad, relevant eller tydlig.

This paper deals with the question of when hill forts ? or enclosed mountains ? were built and to what purpose, by examining two enclosed mountains (RAÄ 78 and 79) in Grödinge parish in the province of Södermanland. A phosphate analysis was conducted to trace anthropogenic activities. The analysis showed only a slight elevation of phosphate content in the soil. A histogram indicated that the elevations were not normally distributed, which could suggest that they were caused by anthropogenic activities.

In connection with the admittance of the EC-directive (99/31/EC) in Swedish politic, through the constitution of waste depositing (2001:512) at year 2001, the rules about management the landfills and leachates tightened. At the landfill Vissberga in the municipality of Hallsberg, a leachate treatment plant was constructed just a year thereafter. This treatment plant consisted of an aerated pond with a following land treatment and a willow cultivation to replace the land treatment during the summer. In this case the parameters, which were estimated as the most important to reduce, were iron and nitrogen. The iron would react with the oxygen-rich water in the aerated pond and precipitate to ferric-hydroxide and than settle in a calm zone of the pond.

The change of the Real property index map has met a lot of resistance in Dalarna.This is the reason that the parcel?s reform has not had the same impact in Dalarnaas in the rest of Sweden. In addition, even ?Laga skifte? (the reformation on propertystructure) was never effected in most areas of Dalarna. This has lead to thatDalarna has a unique property structure with many small and narrow parcels.Some argue, however, that the property structure has been the same for many centuries.The purpose of this thesis is therefore to study how the property structurelooked before ?storskifte? (the reformation on property structure) was done, howit was when äganderättsutredningen (the adjudication), in the 1970s, was accomplished,and finally how the structure looks when land consolidation has been implemented.For the template of the studies, seven different villages were chosen.The basis for the study was comprised of acts for each stage and each village.The study showed that change in property structure has occurred.

The purpose of this study is to analyze different aspects of a portraying of individuals from a time past. It is concentrated around questions about why it is important to show the people?s stories in, for example, exhibitions and under which conditions this would serve as a good use of history according to different theories about history and the portraying of it.I have chosen the theories of Freidrich Nietzsche and Georg Simmel as a tool to analyze different aspects of the portraying of people from the past. Nietzsche?s theory about the different ways in which we use the past and Simmels theory about the meeting between a viewer and a cultural experience.

This thesis deals with two types of agrarian remains in relation to settlement remains; clearance cairns, low stone walls and house terraces in the area of Northeastern Uppland and the area north of Lake Mälaren, during the middle Iron Age. The aim whit this thesis is trying to get a better understanding of the relation between agrarian and settlement remains in Uppland. Three places have been chosen where these three elements are present and they are interpreted through Richard Whites concept of middle ground but also Landesque capital. The three elements have shown to be expressed in different ways in all three sites. It is possible to see two areas with different traditions, but also to see two areas that closely interact with each other, this opens up for a new discussion around agrarian remains in both areas.

I have statistically worked up a material from 228 graves from the late Iron Age in the area of Mälardalen.In my material I have gathered the incidence of combs, knifes, beads, weapons whetstones and torshammarsrings.I have found that beads are overrepresented in graves of women and whetstones in graves of men. I only found weapons in graves from male.I found no indication from my statistic hypothesis (Z-test) that a grave that contains more than three beads should define the grave of a woman. A grave that contains a lot of beads, more than 20, consider I as a female gender.Combs, knifes and torshammarsring are considered as gender neutral..

The aim of this essay is to investigate the situation for democracy in China. The study raises two main questions. They are as follows: Are there obstacles to a democratization process in China? and Are there openings when it comes to a gradual change for democratization in China? The theoretical framework consists of Robert A.Dahl´s Polyarchy theory, and in addition , five factors promoting democracy. Also the notion of an MDP-society (a modern, dynamic and pluralistic society) is looked upon.