The production of ferrochromium alloys at Vargön Alloys AB contributes to formation of unwanted ferrochromium dust, which contains toxic Cr(VI). The dust is since summer 2005 treated with an iron-sulphate solution to reduce Cr(VI) to the non-toxic Cr(III). A year later the treatment technique was improved and disposal occurs in cells on the landfill. The cells can be up to 300 m3 and the edges can be made out of fro example concrete. Tests are conducted on the treated dust when it is disposed.

Sweden is a country with few native tree species. According to Govt. 2007/08: 108, exotic tree species may be seen as an opportunity to increase the growth of tree volume in Sweden. Potential areas where explored In this work for cultivation with Pinus contorta var. latifolia Engelm., Larix sukaczewii Dylis, Abies lasiocarpa (Hook.) Nutt., Populus × wettsteinii Hämet-Ahti (tremula x tremuloides) and Picea mariana (Mill.) Britton et.al.

Syftet med denna uppsats är att undersöka hur lärare förhåller sig till digitala texter och digitala verktyg. Litteraturgenomgången består av forskning som berör digitala texter, digitala verktyg, mediers betydelse för barns lärande och hur lärare förhåller sig till dessa. En teoretisk utgångspunkt är det sociokulturella perspektivet på lärande med centrala begrepp som literacypraktiker, multimodalitet, medieekologi och progressivism. Vår undersökning bygger på kvalitativa intervjuer med åtta lärare och hur de förhåller sig till digitala texter och digitala verktyg, utifrån frågor som berör arbetssätt, möjligheter/hinder och påverkan från skolans styrdokument. I resultatet synliggörs fem olika förhållningssätt till digitala texter och digitala verktyg; digitala texter och digitala verktyg skapar både möjligheter och hinder, digitala texter och digitala verktyg ger stöd, digitala texter och digitala verktyg öppnar fönster till elevers fritidsvärldar, traditionella skriv- och läspraktiker som normerande syn på digitala texter och digitala verktyg samt Lgr 11 har inte förändrat något.

The possibility for plants to utilize phosphorus in soil is a prerequisite for conducting agricultural production, both small scale and professional. Spreading of phosphorus fertilizers and manure is therefore seen as a necessity in today's agriculture in order to achieve high yield. Manure management, livestock farming and manure storage could contribute to the eutrophication of lakes and rivers. For instance, when the ground becomes saturated, phosphorus leakage could be seen in surface runoff or in point sources resulting from inadequate manure storage management.In the municipality of Växjö there is still many bodies of water that do not reach the Swedish environmental water quality standard of "good ecological status". This thesis has therefore analyzed the manure management and storage on agricultural farms which may have contributed to eutrophication in the municipality.The method for this thesis was a literature study, a questionnaire survey with 820 receivers and a summary of issued inspection reports from 2013.The results highlight the ways in which agriculture may have contributed to the eutrophication of lakes and streams in the municipality of Växjö.

The prevailing food and energy crisis of the world, due to the declining reserves of fossil energy and a never ending rise of consumption, forces us to look into new fields to supply our energy demand. The boom of bio energy is criticized, as food crops are used to provide biodiesel and ethanol and the volumes are ridiculously small to supply world demand. Algae are one of the world?s oldest life forms and exist in many different phyla, providing a great variety to choose from, for different purposes. Cultivating microalgae offer a way to produce energy at great volumes without competing with food production and at the same time the algae offer a way to use our expensive nutrients in a more efficient way, besides this the algae are carbon dioxide neutral since their carbon source can be supplied by the atmosphere and the additional energy required can be supplied by algal oil or other renewable sources.

This essay examines the narrative aspect of interactive fiction. The study uses Janet H. Murrays analysis of the digital environment and the properties of it as procedural, participatory, spatial and encyclopedic. From this, her three characteristic pleasures in digital narratives - immersion, agency and transformation - are examined from the perspective of interactive fiction. The study also examines Nick Montforts analysis of interactive fiction as a potential narrative and a simulated world or environment.

In order to avoid harmful substances ending up at the municipal sewage treatment plants, it is important to purify the wastewater at the source. One such source is the wheel washers available in many tire garages which are used to wash the wheels on our vehicles when we change between summer and winter tires. It is important to wash the wheels before storage, to extend the tires lifetime. The purpose of this study is to find a green innovative solution for reduction of emissions of heavy metals at the source, so that the sludge from the sewage treatment plants can be used as fertilizer. The target is to find a wheel wash method which leads to compliance with the guidelines for car washers, and that also provides a better washing result than with the existing method.

Vårt examensarbete innebar att skapa ett system för digital lagring av trafikolyckor som inträffat i Kiruna centralort. De dataprogram vi använde oss av var ESRI Arc-view, Microsoft Access och Excel. Arbetsgång: Vi använde oss av Kiruna kommuns databas över vägnamn som via en länk kopplade ihop programmen Arc-view och Access. Alla vägnamn kommer därmed att finnas tillgängliga i Access databasen. Varje trafikolycka tilldelas ett unikt diarienummer vid inmatning i Access.

Because of the increasing trends in energy consumption and increased environmental awareness, greater focus has been placed on improvement and development of renewable energy sources. An already proven and accepted method is biogas production from anaerobic digestion at municipal wastewater treatment plants.In the waste water treatment process solid material and dissolved pollutants are separated from the water, forming a sludge. The sludge is separated from the process and stabilized during anaerobic digestion or aerobic aeration. Most often, mesophilic anaerobic digestion is used. Because of degradation by microorganisms, biogas with a high content of methane is formed during the digestion.

Analogue photography is something that many thought died out in the beginning of the 21?st century as a result of the digital revolution. But that?s not the case. As the digital revolution swept over the world a movement of analogue cameras, and so called toycams grew bigger.

Övergången till digital marksänd television rönte stor uppmärksamhet i medierna. Debatten handlade om staten som genom övergången skulle få större möjligheter till att kontrollera me-diemarknaden, om en teknik som var föråldrad och om oförberedda tittare. Gotland var först ut i detta teknikskifte och uppmärksammades speciellt. De lokala dagstidningarna har stark ställning i Sverige och har flera funktioner. De fungerar ofta som den huvudsakliga källan för den lokala samhällsorienteringen, som ett forum för den lokala debatten med såväl kommen-tarer som opinionsmaterial, både på redaktionell nivå som insändarnivå.

The aim of this research was to gain a comprehensive understanding of how daily activities impact the organizational culture within the Swedish Police enforcement agency, Polismyndigheten. The study specifically explored the influence of the purported culture of silence on organizational culture. Employing a case study approach, data were collected with a qualitative method from a total of 15 individuals, including students and officials affiliated with Polismyndigheten. The findings were categorized into five distinct groups, revealing a noticeable gap between employees and management. Additionally, the study identified generational disparities and a lack of a clear set of core values.

Climate changing is a growing problem for many countries and communities over the world. The cities has a huge work to deal with in their reforcements of their cities to be resilient ones. This thesis makes an effort to investigate and illuminate some of the problem the cities has to solve related to flooding, hazards, erosions, rising sea levels and crotches. This thesis will help to find solutions that international and national efforts has produced and handed out to each other. A lot of communities are charing their excellent tools that works for them.

Earlier investigations showed that damages on timber from feeding rolls could be within the lower classes of damage according to VMRs classes. Knowledge about differences in productivity between kind types and aggressive types of feeding rolls is necessary because it should influence the question about damages on timber caused by different feeding rolls. In this study the production and timber damage in a harvesting head were evaluated at three levels of pressure (8, 10 and 14 MPa) on the feeding rolls, and with three different types of rolls. One type, the rubber cushioned steel plate roller had 10 mm studs and rubber damping, one ?middle? type made of solid steel with 14 mm studs, and one aggressive type, also made of solid steel with 18 mm studs.

Arvika Fjärrvärme AB, a district heating company from Arvika, today cover 74 % of their total energy production with biofuel wich runs a 16 MW bioler giving process water at saturated liquid state.In recent years Vaporel AB has introduced a new tecnique that gives an external generation of steam after boilers. The concept is built on an adiabatic pressure drop of the saturated liquid in a so called Flashbox which makes a small part of the liquid to evaporate. The generated steam is lead into a turbine where electricity is in a conventional manner.The purpose with this rapport was to do a basic study for the specific system at Arvika where it?s possible to see the potential production of electricity that follows an installation of a flasbox.The final goal was to introduce an economic analysis of a flashox installation at given conditions.To reach our goals we have created a model in Excel where we used the given conditions at Arvika Fjärrvärme to do our calculations. The model has been tested at three different states, of process water returning to potboiler, to be able to decide the optimal operation for the system at present.The studies have resulted in a pressure of the processwater at 14,5 bar (at) and a pressuredrop to 9,5 bar (at) in the flashbox.