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1570 Uppsatser om Water classification - Sida 60 av 105

BAMBUVISKOS ? En hållbar fiber för framtiden?

Naturskyddsföreningen gav författarna uppgiften att undersöka förekommande viskosprocesser och alternativa regenereringsprocesser, detta för att identifiera hur hållbara de är ur ett miljöperspektiv och vilka processer som går att applicera på bambu. Detta för att se möjligheten att märka bambuviskos med Bra Miljöval och för att klargöra frekvent uppkommande frågor angående bambuviskos. Syftet är att se på de olika processernas kemiska innehåll samt vilka utsläpp de orsakar till luft och vatten. Ett delmål med rapporten är att den ska kunna användas som material vid vidareutveckling av kriterierna för Bra Miljöval Textil. Resultat som erhållits vid jämförelser av studerad litteratur är att de betydande faktorerna för miljöpåverkan från massaframställningen samt viskos- och lyocellprocessen beror av: använda kemikalier i processen, energianvändningen och vilken typ av energi, möjligheten till rening av utsläpp till luft och vatten samt återvinning av energi och kemikalier.

Biobränsleanvändning och Flameless oxidation i degelugnar för glassmältning

Idag värms glasugnar upp med antingen gasol eller olja, detta projekt vill visa på möjligheten att istället använda gas från biobränsleförgasning som förbränns utan synliga flammor. Detta skulle miljömässigt ge fördelarna att biobränslen inte bidrar till växthuseffekten och ge förutsättningar för att minska kväveoxidutsläppen genom bättre teknik än dagens.För att visa att det är möjligt att både behålla produktionen och reducera kväveoxiderna med förgasningsgas konstruerades en modell av ugnen och strömningsbilden studerades i vattenmodell. För att undersöka värmeöverföringen i ugnen behöver en eller flera kalorimetrar konstrueras för att kunna användas vid varma försök. Dimensionsberäkningar gjordes som visade att detta är möjligt med vissa typer av kalorimetrar..

Svenska preferensaktier: Ett eget kapital- eller skuldinstrument?

On Nasdaq OMX Nordic Stockholm there has been a large increase in issues of preferred stocks since the financial crisis 2008. Aiming to explain whether preferred stocks have most of their characteristics relating to debt or equity, we answer four sub questions. Do all preferred stocks share the same features, or do they differ from each other? Our population is similar in characteristics, except for the preferred stock of Swedbank which is convertible and deviates when it comes to participation in dividends - instead of convertible the others are limited and redeemable. Further, the second sub question treats preferred stock in relation to the common stock quantitatively, in market data.

Optimering av informationsinsamlingvid prototyptillverkning

This report discusses a method to detect divers in harbour environments usingpassive acoustic detection. The goal was to achieve as high detection as possiblewithout having too high false alarm rate. A short execution time was also desirable.By using the characteristic of an inhalation a band-pass filter was applied to the signalto improve the signal to noise ratio. After the filtering an energy estimation of thesignal was made. This energy estimation was later used in a frequency analysis, whichcould tell us if there were enough energy in the frequencies that correspond to adivers breathing frequency.

Varför är det så svårt? - En studie av kulturhistoriska museers arbete med hbtq-perspektiv i samlingar

The aim of this two years master?s thesis in Archive, Library and Museum Studies is to analyse how Swedish cultural history museums work to include LGBTQ-heritage (LGBT is the acronym for Lesbian, Gay, Bisexual, Transgender and Queer) in their collections. This work is articulated around three research questions. These interrogate museum practice about collecting and collection management, what it looks like in the already gathered collections as well as the implications such work implies on a broader level. The theoretical framework throughout the paper is gender and LGBT studies as well as queer theory.

Olika branscher, samma reformer? : En studie om trender inom inköp

Background: Røvik claim that both public and private sector, large and small firms, are working with the same administrative standards, recipes, as these are currently considered to be ?right?. He argues that this is partly due to the globalization of the information society, which is making it possible for recipes to spread rapidly. An area affected of this is purchasing, where many new strategic and organizational concepts have been developed. Nowadays, people argue that ?every penny saved in the procurement function, is an extra penny in profit? and that purchasing decisions affect the entire company and its performance.

Miljöfarliga transporter till sjöss : Kartläggning och riskanalys

An increasing number of chemicals are being transported by ships along the Swedish coastline. Many of these chemicals may pose a threat to the environment. Accidents and spills are luckily rare, but nonetheless it is important to be prepared for a possible chemical spill. The Swedish Coast Guard is responsible for responding to chemical spills at sea, and has both equipment and trained personnel for the purpose. In order to prepare for a possible accident one also needs to know what is currently being transported at sea.

Fisksamhället i Spexhultasjön, Nässjö

The lake Spexhultasjön is a moderate humic mesotrophic lake that is not acidified. The fish fauna was investigated by using a standard method for sampling freshwater fish with multi mesh gill nets. The fish fauna was diverse with perch, pike, tench, common whitefish, and roach. Perch and roach dominated. There were few pikes.

Utvärdering av avloppsvattenreningen vid Hallsta Pappersbruk : Kartläggning av inkommande avloppsvatten och optimering av driftparametrar

Hallsta paper mill uses large amounts of water during the pulp and paper making processes. The wastewater is treated in two separate activated sludge processes referred to as BIO 1 and BIO 2. The main aim is to reduce the organic substance content, measured as COD (Chemical Oxygen Demand) before the wastewater is released into the environment. Since the effluent produced is very rich in organic substances, the addition of nitrogen (N) and phosphorus (P) are necessary to give satisfactory treatment results. Problems with sludge bulking sometimes occur which lead to increased levels of suspended matter and nutrients in the effluent.

Etanolmarknaden i Brasilien : etanol som fordonsbränsle

According to the EC fuel regulations 2 % bio fuel has to be blended in all fuel by the year 2005, and 5.75 % by the year 2010, which means ethanol for gasoline driven vehicles, so there will be a substantial demand for ethanol. Brazil already has an established industry for producing ethanol and is the leading producer and exporter of fuel ethanol. My purpose with this paper is to investigate why Brazil decided to develop ethanol production on a large-scale operation and to find out today?s situation. Focus will mainly be on ethanol production with sugarcane as a feedstock.

Växtdatabas med sökmotor :

My work has resulted in an interactive search engine for plants that can be found at www.plantit.se. In the work process I have searched for which search criteria is most important when doing searches on woodland plants. I have done this by an analysis of existing databases and with an survey where leading plant expertise answered questions about woodland plants. I analyzed three search pages that are on the internet today Havenet.dk, Backyardgardener.com and Den virtuella floran. I concluded that there are several flaws but also many positive aspects that I have used when developing the interface of my page. The survey resulted in the basis for my search criteria the answers listed the most important factors when planting woodland plants. From this information I developed a system with five values on every criteria.

Ämnet Svenska : En kritisk diskursanalys av svenskämnets kursplaner i Lpo 94 och Lgr 11

The purpose of this study is to investigate how the subject Swedish is being constructed in syllabuses for the subject. The study includes the syllabuses for the subject Swedish from the Swedish curriculums Lgr 11 and Lpo 94. These are investigated in order to show what conceptions of the subject, i.e. the purpose, content and work models of the subject you can spot in these, and in what direction the perception of knowledge has changed. For the analysis Faircloughs critical discourse analysis and three dimensional model is being used.

EFFEKTER AV REHABILITERANDE ÅTGÄRDER FÖR PATIENTER MED UTMATTNINGSSYNDROM : Sett ur ett arbetsterapeutiskt perspektiv

Utmattningssyndrom är ett snabbt växande problem i vårt land, studierinom området har visat att detta tillstånd ofta är stressrelaterat. Stress är enreaktion på obalans mellan de belastningar som människan utsätts för ochde resurser som han/hon har för att hantera dessa belastningar. Att drabbasav utmattningssyndrom kan bl.a. innebära en minskad förmåga tillrörlighet, vilket också innebär svårigheter att klara det dagliga livetsaktiviteter. En av arbetsterapeutens uppgifter är att hjälpa patienter hitta enhälsosam balans mellan arbete, vila och fritid.

Klassning av fjällbjörkskog enligt FAO:s definition av skogsmark med hjälp av flygburen laserskanning

Sweden?s forestry legislation was updated in 2010 and a new definition of forest land was introduced. This definition was adapted to the one used by the Food and Agriculture Organization of the United Nations (FAO) for international statistics on the state of the world's forests. It is in short based on the lands ability to grow forest that reaches 5 meters, 10 % canopy closure and has a continuous distribution, according to FAO at least 0.5 hectares. A country-wide laser scanning is now carried out for the production of a new national elevation model; the laser data also provides information on forest height and density.

Passive acoustic diver detection

This report discusses a method to detect divers in harbour environments usingpassive acoustic detection. The goal was to achieve as high detection as possiblewithout having too high false alarm rate. A short execution time was also desirable.By using the characteristic of an inhalation a band-pass filter was applied to the signalto improve the signal to noise ratio. After the filtering an energy estimation of thesignal was made. This energy estimation was later used in a frequency analysis, whichcould tell us if there were enough energy in the frequencies that correspond to adivers breathing frequency.

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