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1798 Uppsatser om Environmental chemistry - Sida 49 av 120

Inga miljövinster med ekologisk produktion? : Lägesrapport över den svenska jordbruksdebatten

Organic agriculture is financially promoted in Sweden by special environmental support and as consumers we are all encouraged to buy organic food. At the same time scholars at the Swedish University of Agricultural Sciences claim that organic farming does not provide any environmental benefits. The main criticism is that organic farming has lower yields than conventional, which means that more land is needed to produce the same amount of food as in conventional farming, leading to deforestation and loss of biodiversity. As for climate change, the critics claim that the significantly higher productivity in conventional crop production compared to organic, releases surplus land, which could be used for bio-fuel production and thereby replace the fossil fuels. The critics also claim that organic farming causes higher nutrient leaching than conventional.

En miljöetisk tolkningsfråga : Hållbar utveckling i den svenska grundskolans läroplan, kursplaner och undervisning i biologi och hem- och konsumentkunskap

Idag står vi inför utmaningen att leva inom vår planets gränser. För att uppnå en hållbar utveckling krävs det en förändring i tankesätt, värderingar och livsstil menar UNESCO-UNEP. Detta kan åstadkommas genom en fundamental förändring i utbildningen från tidig barndom. Syftet med den här studien är att undersöka hur hållbar utveckling tolkas i den svenska grundskolan. Två ämnen har valts; biologi och hem- och konsumentkunskap.

Hållbar katastrofturism - ur ett miljöperspektiv

This thesis is about catastrophe tourism and the sustainability of the tourism in an environmental perspective. The purpose is to see if there is any interest for that kind of tourism and to see if the people who have an interest or curiosity of it thinks about the environment when they are traveling. A quantitative survey was made on the internet and people on Facebook, Resedagboken.se and Reseforum.se had the chance to answer it. There is an interest of catastrophe tourism and a few have been to catastrophe sites or would like to visit. The conclusion of the thesis is that there is a possibility of a sustainable catastrophe tourism because most of those who answered that they had or wanted to visit a catastrophe site also thought about the environment and cleaning up after themselves..

Passivhus av helväggselement i träull

Environmental destruction is a growing problem in our world. Almost every day there are new reports concerning that we have to do something about the greenhouse gasses. Simultaneously is the human constantly more eager to have a life with higher standards and therefore uses more energy. The environment is a question that is highly up-to-date and more people try to find solutions on how to save our planet. One way to decrease the energy demand is to build passive houses, where the houses don?t have any active heating.

Kartläggning av energiförluster : gällande klimatskal och ventilation för Stora Enso Timbers Pelletsfabrik i Grums

Due to recent legal enactments regarding carbon dioxide emissions, the car industry is facing higher demands. An effective way of reducing these emissions is to minimize the weight of the vehicle. This thesis constitutes a feasibility study on whether or not it is applicable for the car industry to utilize an inner floor structure comprising composite materials. The principal was the projectSåNätt, in which the main participant was Volvo Cars Corp. In consultation with a reference group, consisting of delegates from the industry and KTH, a specification of requirements was produced.

Reklambyråers strategier och attityder kring ansvarstaganden i miljöfrågor och hållbar utveckling : En djupintervjuundersökning

Abraham is the original patriarch. How does his leadership compare with a modern day popular culture patriarch with his roots in advertising, the shopkeeper Stig, star of the ICA advertising? The essay compares the leadership and masculinity of two male leaders from different backgrounds and settings, and discusses similiarities and differences.

Leptospirosis in dogs in Lima, Peru : description of changes in serology, hematology, blood chemistry and urinalysis before and after one month of treatment

Uganda anses vara ett högriskland för utveckling av nya plötsligt uppdykande sjukdomar (emerging infectious diseases, EID). Grisproduktionen i Uganda har ökat drastiskt de senaste åren och en stor del av Ugandas grisar är frigående. De kan därför lätt komma i kontakt med vilda djur i deras närområde. Porcint circovirus 2 (PCV2) är ett ubikvitärt virus och etiologiskt agens för bland annat porcine multisystemic wasting syndrome (PMWS). Förutom att infektera tamgrisar över hela världen så har PCV2 också visats kunna infektera vildsvin.

Brand equity and corporate responsibility : a review of brand valuation methods

During the last decades, brand equity has been a priority topic for both practitioners and academics. In accordance with the structural changes in the economic settings caused by the so-called "new economy", corporations being confronted with a shift on perceived business value structure from tangible assets to intangibles. On the other hand firms increasingly are adopting more responsible behaviour towards their societies. In this context, one critical question is to understand how corporate conduct may affect brand equity. The purpose of this study was to find how brand equity (BE) measurement methods embrace corporate responsibility (CR), based on a literature review.

Askåterföring i Jämtland : biobränslets och askans innehåll av tungmetaller relaterat till markernas geokemi

Using biofuels from regeneration cuttings is becoming more common in Sweden. Ash from the combustion of biofuels contains many valuable nutrients and base cations. The Swedish Forest Agency recommends that ash should be recycled to clearings where biofuels have been removed, to avoid future impoverishment of Swedish woodlands. In Jämtland, in northern Sweden, a large quantity of biofuels are taken out from cuttings but ash recycling has not yet been tried. The aim of this thesis was to examine the conditions for ash recycling in Jämtland regarding to soil chemistry and heavy metal content in soil and biofuels.

Bildandeprocessen för naturreservat : En jämförande fallstudie över naturreservat bildade i Stockholms län

Naturreservat är en form av områdesskydd som kan användas för att ge värdefulla naturområden ett långsiktigt skydd. När ett naturreservat bildas är tanken att det ska finnas kvar mycket länge och att upphäva ett reservat kräver väldigt starka skäl.Naturreservat är den vanligaste formen av naturskydd i Sverige. Antalet reservat och den totala skyddade ytan har stigit mycket under de senaste årtiondena och anledningen till detta är att man inom miljö- och naturvårdspolitiken har satt upp tydliga mål som ska uppfyllas samt att lagstiftningen som finns är praktiskt tillämpbar. Att bilda ett naturreservat är en process med många steg. Syftet med denna uppsats är att utreda denna bildandeprocess, och jämföra tillvägagångssättet hos kommunerna och hos länsstyrelsen.

Samband mellan virulensgener och VTEC-infektioner : Riskklassificeringssystem för VTEC

To curb greenhouse gases and mitigate climate change is one of the biggest challenges human society face today. Carbon dioxide (CO2) has accumulated rapidly in the atmosphere as a consequence of burning of fossil fuels and deforestation. The aim of this study is to explore two methods to store carbon dioxide in geological formations and biological sinks. The aim is also to discuss the two mitigation options from a sustainable perspective and whether it can lead to a better environment and benefits for local and global societies. The research questions are: Which method to store carbon dioxide, geological or biological, is the most effective? Which method to store carbon dioxide, geological or biological, has the greatest potential to promote sustainable development for local communities?The method used is a comparative case study and presents four case studies that explore the potential for CO2 storage offshore in Norway and Brazil; and in tropical forests in Mexico and Brazil.

En hållbar framtid med Gröna Byggnader.

På Sveriges fastighetsmarknad har man de senaste åren kunnat urskilja ett allt högre fokus påmiljön från dess aktörer. Miljödebatten i Sverige har snabbt fått fäste och allt fler företag förstårvärdet av att fokusera på sådana frågor.Att utvecklingen fortsätter att gå framåt är viktigt då fastigheter och dess tillhörande byggnaderstår för nästan en tredjedel av världens utsläpp av växthusgaser och bara byggandet och driftenstår för cirka fyrtio procent av den globala förbrukningen av råvaror och energi. Prioritering avmiljöfrågor blir således viktiga vid fastighetsförvaltande och nyproduktion.Tidigare forskning visar att det finns en mängd incitament för att bygga och förvalta grönt. Ävenhyresgästerna har incitament för att hyra gröna lokaler. Vidare visar internationella studier att detinte alltid krävs stora åtgärder för att uppnå bra resultat vad gäller fastigheters energiförbrukningoch hållbarhet över tid.

Vattenkvalitén i Fredstorpsbäcken - dikad bäck på fastigheten Rämningstorp i Skara kommun :

The estate of Rämningstorp in the region of Västergötland in southern Sweden is administered by the holding trust company Skogssällskapet i Skövde. In 1999 measures were taken by Skogssällskapet to drain the stream Fredstorpsbäcken as a means to increase the forest productivity of the surrounding lands, which are situated on the estate of Rämningstorp. Almost immediately after the drainage, the streamwater turned turbid and a landowner downstream reported the issue to the county administrative board of the region. The aim of this thesis was firstly to analyse the suspended matter that appeared during summer/autumn and secondly to explain why it came to be. Initial hypotheses for the explanation to the greyish turbid water were that it was either 1) a chemical/biochemical precipitate, or 2) an bacterial/algal blooming.

TILLFÄLLIGA EFFEKTTOPPAR I FJÄRRVÄRMEN : Kan man med hjälp av lagrad värme undvika att de uppstår i betonghus?

Climate and environmental issues is now high on the agenda. We live in a generation that must try to solve some major environmental problems. Buildings and habitations account for approximately 40 % of Sweden's total energy today. To reduce this figure, as needed, more research in the field of energy efficiency is required.This thesis concerns the heating of buildings. The load on district heating is heavy during certain times of the day.

Hållbar utveckling och CSR inom foderindustrin för hund och katt : Med fokus på det ekologiska perspektivet

Pets like dogs and cats have a considerable importance for humans and research demonstrate a variety of positive economic and social effects in society due to our pet companions. The presences of pets are increasing on a global scale with correlation to economic development in low- and middle income countries. For example dogs have doubled in India over a five year period. The feed industry for dogs and cats is also the fastest growing sector in the food industry and certain pets have a significant animal protein intake which, depending on the choice of resources may provide a high ecological footprint. Examples of environmental effects with distribution and manufacturing of pet food are increased greenhouse gas emissions, waste, use of water and energy.

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