Blast furnace is the heart of every steel plant. Steel production is based on the blast furnace process, as it is where the iron is extracted from the iron ore and turned into liquid iron, which will subsequently be used to make liquid steel. Therefore, without hot iron, steel can not be produced. Blast furnaces in this process are supplied among others with pulverized coal. Raw coal should be prepared for the blast furnaces in the form of fine coal powder.

In the process of making carton boards into Skoghall Mill, are great quantities of water being contaminated. This water has to be treated before it is possible to release into the recipient, Kattfjorden. One of the contaminations that is important to extract from the wastewater, is organic carbon (measured as TOC-total organic carbon) because microbiological breakdown can lead to the bottom becomig free of oxygen.The wastewater treatment at Skoghall Mill is done through an external wastewater treatment that is located at the factory. The biological treatment (aerated lagoon) is a 140 000 m3 water pool with surface aerator, which is give oxygen to the water. In the lagoon live microorganisms who performs the biggest part of the TOC-reduction.One problem with the lagoon is that the treatment of TOC is considerably worse during wintertime than during summertime.

Urban trees have very little in common with trees on natural sites, such as forests or pastures. Trees in urban environments are often planted in packed soil and in small volumes. This can lead to decreased availability of water and oxygen, as well as deteriorated ability for the soil to store nutritional elements. Also above ground the tree usually have limited space in cities. Regulations on free height over roads and cycle tracks demands high stems at an early stage of their development.

The tablet is a new IT-tool which have started to get introduced into school, but research is still missing and especially in the pre-school environment. The purpose with this study is to investigate teachers uptake, how they use the tablet in everyday pedagogy work as well as the organizational conditions that that facilitate and hinders. Through my observations and interviews in a Swedish K-5 school I have found that the teachers find tablets more appealing to use in comparison to computers. These findings are partly supported by Davis et al.?s (1989) TAM-theory who considers there to be three types of aspects that affect the way individuals adapt to technology.

The purpose of doing this essay was to illustrate how people living with chronic disease, dependent on medical technology experience their life situation. The study includes people with either dialysis therapy, mechanical ventilator or chronic oxygen therapy. A meta-synthesis was used as a method where a systematically review of studies that are made in a given issue compiles. Findings of the studies resulted in a synthesis of three themes: Limitations in life as a consequence of life-long treatment, to take responsibility for your life provide self-esteem and safeness, and to be cared for in different contexts ?help or prohibit.

The freshwater pearl mussel (Margaritifera margaritifera) is threatened throughout its range. There has been a substantial decline of the species and one major reason is habitat degradation. We investigated how the substrate composition of the bottom floor affects the regeneration of the mussel by analyzing data from the Västerbotten County Board?s inventory of the freshwater pearl mussel. The results implied that fine material such as fine sediment and sand might be detrimental to regeneration whereas gravel and boulders and in particular stone seem to be beneficial.

Arbetsuppgiften var att ta fram rekommendationer på driftpraxis gällande argonspolning vid en efterbehandlingsstation på SSAB Tunnplåt AB i Luleå. Rekommendationerna skulle gälla tiden för slutspolningen efter att behandlingen av stålet, såsom tillsatser av råmaterial för att uppnå rätt kemisk analys samt temperaturjusteringar för att optimera gjutningen, var färdig. Syftet var att minska mängden oxidinneslutningar i EHS-stål som orsakar igensättning vid gjutningen, samt uppnå kundens förväntningar på rent stål. Insamling av prover (Total Oxygen Sample) och mätningar (syresond) har gjorts vid efterbehandlingsstationen, CAS-OB, och i gjutlådan. Med hjälp av proverna har syrehalten beräknats vid noterade spoltider.

The aim with this literature review is to describe the ensilage process in a bunker silo. The process from harvest and chopping to filling and unloading the silo is explained. The sealing of the bunker silo plays an important role for the final quality of the silage. This review covers some of the techniques used. There are many silage additives on the market, some of them are presented including how they act in the ensilage process.

Burnt alun shale and lime is the residual product that was formed when alun shale was used as fuel to convert limestone to quick lime. The material contains arsenic, vanadium, molybdenum, cadmium, nickel, lead, and uranium among other elements. The aim of this paper is to examine the uptake of trace elements in vegetables grown on burnt alun shale and lime to determine whether or not the surrounding environment and humans are exposed to these elements by eating plant products. A cultivation trial was carried out where onion, carrot, and lettuce were grown on three mounds of burnt alun shale and lime in the Falköping area in Sweden. The treatments were burnt alun shale and lime mixed with peat, only burnt alun shale and lime, and a reference soil. The reference plots were natural soil mixed with peat adjacent to the mounds.

AbstractSyftet med studien var att utvärdera fluoxetins effekt på hetsätning och kräkning vid bulimia nervosadå ingen samtidigt psykoterapi ges. Även tid för behandlingseffekt, förändringar på andrasjukdomskarakteristika, förekomst av viktförändring och biverkningar undersöktes. Studiengenomfördes som en litteraturstudie. Sökningar efter litteratur skedde i Pubmed, Google, ELIN,Artikelsök, Cochrane, EMEA, SweMed+. Sökorden var; bulimia, bulimia nervosa, fluoxetine, prozac,psychotropic drugs, antidepressive agents, serotonin uptake inhibitors, ätstörning, eating, disorder.Sammanfattningsvis hade fluoxetin 60 mg/dag en god effekt på att minska antalet hetsätningar ochkräkningar per vecka jämfört med placebo.

Bakgrund: Kronisk obstruktiv lungsjukdom (KOL) är en folksjukdom, som påverkar kroppen både fysiskt och emotionellt. Enligt världshälsoorganisationen beräknas sjukdomen öka och bli den tredje största dödsorsaken år 2030. Syfte: Syftet med litteraturstudien var att belysa patienters upplevelser av att leva med KOL genom frågeställningen; hur upplevs det emotionellt av att leva med KOL. Metod: En litteraturstudie bestående av tio kvalitativa artiklar genom databassökning i CINAHL, Medline och PubMed. Resultat: Det framkom en rad olika känslor i relation till olika upplevelser. Fyra huvudkategorier identifierades till: upplevelser av fysiska begränsningar, upplevelser av att leva med syrgas, upplevelser av minskad självständighet och betydelsen av sociala relationer.

SecRePac is a household appliance that simplifies sorting of packaging such as milk, juice and yogurt containers. By shredding the packages SecRePac reduces its volume uptake both in the home and at the recycling station. This leads to minimization of both transports to the recycling stations and truck transport for emptying the containers at the recycling station.The greenhouse effect deteriorates and becomes worse and worse leading to extreme climate changes and natural disasters such as floods as an example. Carbon dioxide emissions are the major reason for this and at least 30 percent of all these emissions come directly from transports. In the EU carbon emissions has decreased in the past few years.

Acidification is a central concept in the environmental debate. The effect of acidification of the soil is a matter of a decreasing amount of cations and thereby a decreasing ability to resist a supply of hydrogen ions to the soil. Acidification has gradually increased in the O horizon in Västerbotten over a 30-year period from the 1970th to the 1990th. The aim of this study was from inventories of The Swedish National Forest Soil Survey and The Swedish National Forest Inventory explain and quantify the acidification that has occurred in the O horizon of two regions in the north of Sweden. Data from SMHI, The Swedish Meteorological and Hydrological Institute, has also been used.

Glutathione (GSH) is a molecule that consists of three amino acids: glutamic acid, cysteine and glycine. GSH has several important functions: to protect cells from free radicals, reactive oxygen species and oxidative stress. GSH exists in a reduced form, GSH, and in an oxidized dimeric form, glutationdisulfid, GSSG. The enzymes glutathionereductase (GR) catalyses the reduction of GSSG back to GSH. Nicotinamide adenine dinucleotide phosphate (NADPH) is required as a coenzyme in the reaction.

Eutrophication of lakes and streams are nowadays a well known environmental problem and implies an enrichment of the nutrients phosphorus (P) and nitrogen (N). Phosphorus is considered to be the most important component for the growth of aquatic plants and leads in too large quantities to an intensification of growth. Phosphate (PO4) is the fraction of phosphorus that can easiest be taken up by plants and thus have the greatest impact on eutrophication. Increased plant growth in lakes and unfavorable conditions for aquatic animals are two examples of negative consequences. A significant portion of the increased nutrient supply to nearby water can be derived to phosphate leaching from agricultural areas, where private sewers and agriculture is two main sources.