An increased awareness about the global warming has created a demand for more information on how the climate is affected by different activities.This master thesis was initiated by Tricorona, a Swedish company that offers its customers analysis and calculation of their climate impact. Tricorona also supplies climate neutralisation with CERs, in accordance with the Kyoto protocol and controlled by the UN. This work demands updated emission factors for greenhouse gases. An emission factor gives information about the greenhouse gasintensity of a service or a product [kg CO2-eq./ functional unit].The purpose of this thesis is to examine how electricity, district heating, hotels, taxis, food and materials affect the climate and how emission factors for these areas can be calculated.This was done by reviewing and comparing different studies and by interviewing experts. The information was evaluated and recommendations on calculations and emission factors were made.The consumption of energy is the main source of greenhouse gas emissions for district heating, electricity, hotels, taxis and materials.

Water hardness indicates the concentration of calcium and magnesium ions in water. Water with high concentrations of these ions is described as hard water and water with low concentrations is described as soft water. Water that is too hard or too soft can lead to technical and economical problems. In collaboration with Midvatten AB, groundwater hardness in the Badelunda esker between Leksand and Avesta has been mapped, and an attempt has been made to explain the variations. For this purpose, different GIS programs, such as ArcView, ArcInfo, IDIRISI, and one geochemical modelling program, PHREEQC, has been used.

Syfte: Studien har två syften:Att beskriva förekomsten av kategorier och omfattningen av frivillig redovisning om anställda som är relaterad till bolagens sociala ansvar (CSR).Att förklara vilka faktorer som påverkar omfattningen av frivillig redovisning relaterat till anställda. Metod: Då studien har ett förklarande syfte som berör omfattningen av frivillig redovisning om anställda, så har kvantitativa metoder använts och data till studien har samlats in via en kvantitativ innehållsanalys. Studien utfördes på 56 av de 58 bolag som befann sig på Large Cap, Stockholmsbörsen 2012, varav två bolag fick räknas som bortfall på grund av andra redovisningssätt än de övriga. Datat analyserades sedan genom deskriptiv statistik och multipla regressionsanalyser. Resultat & slutsats: Stora bolag på Stockholmsbörsen redovisar frivilligt multipla kategorier information om anställda, men den kategori som generellt används mest är profilinformation om anställda. Den faktor som främst förklarar den frivilliga informationen om anställda är bolagets skuldkvot, men också vilken industrisektor ett bolag tillhör har betydelse. Den teori som främst förklarar frivillig redovisning om anställda är agentteorin. Förslag till fortsatt forskning: I denna studie upptäckte vi att bolag redovisar fler kategorier om anställda än vad vi i vår studie deducerat fram från tidigare forskning.

The aim of this thesis is to improve the control of urea injection at the combined power and heating plant Framtidens Gärstad (FTG). Tekniska Verken i Linköping AB is the owner of the plant.The FTG plant consists of a boiler where garbage combustion is done. From the combustion nitrogen oxides are emitted. These nitrogen oxides are hazardous to the environment. To reduce the nitrogen oxides, injection of urea into the boiler is used.

Senast som revisionsplikten var föremål för aktiebolagskommitténs arbete var 1995. Skälet som angavs då för inskränkning av revisionsplikten var att revisionen innebar en kostnad för företagen. Vid det tillfället skedde inga ändringar då revisionsplikten ansågs förhindra ekonomisk brottslighet i framförallt de mindre bolagen med ett litet aktiekapital. Vid ett möte i mars 2007 betonade det Europeiska rådet kraftiga gemensamma insatser för att minska de administrativa bördorna för företag. Det betonades att små och medelstora företags kostnader för revision och redovisning är särskilt betungande.

Soils in a metal contaminated site on Stångberget in Gusum in southeastSweden were investigated and compared to relatively unaffected soils a fewkilometres away. Pollution came from historical release of untreated flue gasesfrom a brass mill. The objective was to find information on how high the metalconcentrations are, if metals from the polluted soil affect the surroundings andif the metal contamination affects the microbial community. The soil wasinvestigated using several different methods, such as field XRF measurements,chemical analysis of metal, carbon and nitrogen content, pH, acid neutralizingcapacity, texture, soil depth, field leach tests, sequential extraction and microbialfunctional profiles. The study showed that copper and zinc concentrationswere above Swedish Environmental Protection Agency guidelines for lesssensitive land use on the entire investigated area.

The Swedish road transport sector relies almost completely on fossil fuels. In 2007, as much as 96 percent of the total sales of fuels was made up of petrol and diesel, while at the same time the share of total emissions of greenhouse gases in Sweden that came from road transports amounted to close to 30 per cent. Sweden is by no means worse off than any other European country in these respects. In order to address the questions of high oil dependence and CO2 emissions the European Commission has proposed a reinforcement of the legislative framework, with a 10 percent minimum for the market share of biofuels in 2020. Furthermore, the proposed target is binding for the member states, unlike the current voluntary target of 5.75 percent by 2010. More than doubling the usage of biofuels in only a bit more than a decade will most likely not be possible without policy interventions.

Denna studie bygger på ett uppdrag av Skellefteå Kraft, innefattande en förstudie som ska skapa underlag för beslut om företagets framtida hållbarhetsredovisning. För att hållbarhetsredovisningen ska bli trovärdig är det viktigt att informationen som kommuniceras är väsentlig, det vill säga fokuserad på de frågor som är mest avgörande för företaget. Studien syftar till att öka förståelsen för vilken information som kan vara väsentlig för företag att redovisa i en hållbarhetsredovisning. Genom en textanalys, en narrativ beskrivning av fallstudiens aktörsgrupper samt utveckling av en analysmodell avses aktörsgruppernas uppfattningar om vad som är väsentlig hållbarhetsinformation kartläggas. Utgångspunkten för den kvalitativa och explorativa fallstudien var ett aktörsorienterat synsätt, vilket genomsyrade arbetet med en intern väsentlighetsanalys.

ur society is today in a phase of development in environmental and sustainable thinking. Alarming reports show changes in climate caused by our load and exhaust of resources. The energy usage contributes to a big part of it, by its emission of carbon dioxide. The built environment uses around 40 % of the total energy consumption in Sweden and requests to strongly reduce it are presented from both EU and national level.This thesis brings up the subject of green building with a focus on how we can create more energy efficient buildings in projects of new construction. Since the construction industry today often fails to pass on the knowledge between different projects, as a return of experiences, the construction company Skanska suggested the topic for this thesis.

The housing sector uses 40 % of the energy in Sweden and half of the electricity usage. Theuse of energy is the main reason to the increasing rate of carbon dioxide in the atmosphere.This is the main motive but also a wish of higher safety, that is a higher rate of selfsufficientenergy production in Sweden, we want to decrease the need of using fossil fuel. Now whenthe energy price rise, the interest in energy issues increase and more people discuss thepossibility of reducing the usage of fossil fuel. A change to renewable energy such as sun,wind and water is the only solution where we can get a sustainable development.One way to contribute to a better use of energy is to build in the principle of passive house.The house is being built with a thick and tight insulation. If you use a heat-exchanger withhigh degree of efficiency and a final heating battery on the ventilation system, the heat fromlamps, devices and the ones living in the house should be enough to fulfil the criteria ofliving.

During recent years the use of TMR (total mixed rations) has increased in Swedish lamb production. For many years TMR has been used for cattle and hence the information and knowledge is vast, while the knowledge concerning sheep and TMR is more limited. The aim of this thesis is to present an overview of the scientific knowledge on the subject, and also to compile practical experience from sheep farmers using TMR. The thesis begins with a literature review where different aspects relevant to the usage of TMR are dealt with. It is concluded that there are differences between sheep and cattle that must be taken into account.

Cement manufacture accounts for 3-5 percent of total global carbon emissions. There is a growing interest in reducing the environmental impact and conserve limited natural resources. In cement production, clinker productions consume 87.5 percent of the total energy consumed in the cement manufacture.Cementa has since many years, focused on reducing the environmental impact of cement production. The work has involved the entire production process from selection of alternative fuels to the development of cement with less clinker content. During 2013/2014, two new types of cement (Bascement and CEM II / B) will be introduced to the Swedish market.

In the production of pulp, paper and cardboard, a large amount of water is used daily. The water has to be purified in the internal purifying plant before it reaches the receiving body of water. In the biological purifying stage at the Stora Enso Skoghall mill, an aerated basin is used where the microorganisms, using oxygen, oxidize the organic material to carbon dioxide. The air is pumped from the bottom of the basin and the oxygen can then be transported from the air bubbles to the water through diffusion. The problem with aeration of waste water from the forest industry is that wood residues, such as fatty acids, are making the transport of oxygen in water more difficult.

Integrerad rapportering (IR) sprider sig inom redovisningsvärlden och modellen ska enligt förespråkarna skänka en transparent bild över hur företagen sammanlänkar finansiell och icke-finansiell information. Genom intressent- och legitimitetsteoretiska postulat syftar studien till att visa vilka faktorer (storlek, skuldsättningsgrad, ägarkoncentration och bransch) som kan påverka valet att tillämpa IR-principer. Vidare undersöks om mängden integrerad information verkligen skiljer sig mellan företag som tillämpar IR och övriga. Fokus ligger på social- och miljöinformation som finns integrerad med övriga upplysningar. Empirin har genererats genom en i huvudsak kvantitativ innehållsanalys av 67 årsredovisningar från företag noterade på Nasdaq OMX Large Cap. Regressionsanalyser och Mann-Whitney test har använts för att analysera den insamlade empirin. De statistiska testerna visar att storlek och branschtillhörighet har signifikanta samband med mängden integrerad miljö- och social information i årsredovisningarna.

To establish good horse welfare there are several factors that need to be considered. One important factor is the environment in which the horses are kept. In Sweden horses are stabled during long periods of time in the cold season and consequently the stable environment is even more important. The most essential environmental factors in a horse stable are ambient temperature, relative humidity (RH) and concentrations of contaminants in the stable air. The air in a horse stable contains dust, noxious gases, moulds and microorganisms which all can contribute to developing respiratory diseases in horses.