Sökresultat:
796 Uppsatser om Anaerobic digestion of organic waste - Sida 41 av 54
Energianalys av Svensk Växtkrafts biogasanläggning i Västerås
Svensk Växtkraft is the owner of the biogas plant in Västerås. The company is planning to increase
their treatment capacity at their biogas plant. In connection to this work it is also possible to make
some energy saving changes to the biogas plant. The objective of this study was therefore to make
an electricity and heat survey of the biogas plant, a detailed study of the heat consumption in the
sanitation step and also a comparison of energy consumption with the present sanitation method
and an alternative strategy where the waste is treated in 55 °C during 10 hours (the current method
is heating to 70 °C during 1 hour).
The energy survey was conducted in close collaboration with staff at the biogas plant. The current
during normal operation was measured, power was calculated and multiplied by the time of usage to
obtain the energy consumed.
Carbon Critical Masterplanning tool : klimatpåverkan från samhällsplaneringsprojekt
With the climate change issues growing in importance on the social agenda, the field of urban masterplanning is of no exception when it comes to minimizing the carbon footprint in a variety of projects. The aim of this thesis has been to prepare the Carbon Critical Masterplanning tool, a software plugin for carbon dioxide emissions assessment developed by Atkins, to be used in Swedish conditions. The main targets were to improve the areas of the tool associated with energy conversion and renewable energy sources, and to test the tool in a real case.
A planned construction of a new campus in Albano, Stockholm was chosen for the pilot study. A 3D model was built in the tool and the carbon footprint was calculated for a variety
of combinations for energy supply to the future area. The results show that use of locally installed renewable energy sources can reduce the total climate impact when life cycle
perspective is applied.
Energy analysis of a fruit drying plant in Adeiso, Ghana
The purpose of the project has been to work out recommendations that reduce the energy-related costs and environmental impact of HPW Fresh & Dry Ltd., a fruit
drying factory in Ghana. The factory produces electricity with diesel and biogas but also purchases electricity from the national electricity company. Heat for the drying
process is produced from biogas, kerosene and solar panels. In the project the energy system was analyzed by measuring production and consumption of heat and electricity.
The project results show that the factory can become self-sufficient on heat if the available energy is used more efficient. The production units for both electricity and heat have low efficiencies.
Hur marknaden bedömer europeiska företagstillkännagivanden vid etablering i BRIC länder
The aim of this study is to examine how European companies? stock price is affected by an announcement about foreign direct investment in one of the BRIC countries. Another aim for the study is to examine if the market reacts differently to the three modes of entry methods in a given BRIC country and to examine if the market reacts differently to different European countries. The study also set out to answer if there were any effects of the three modes of entry that was visible a short time after the announcement. To answer and examine this, the authors used the event study approach. The study was conducted with a sample of 47 companies from France, Norway, Spain, Sweden and Germany.
Carbon Critical Masterplanning tool : klimatpa?verkan fra?n samha?llsplaneringsprojekt
With the climate change issues growing in importance on the social agenda, the field of urban masterplanning is of no exception when it comes to minimizing the carbon footprint in a variety of projects. The aim of this thesis has been to prepare the Carbon Critical Masterplanning tool, a software plugin for carbon dioxide emissions assessment developed by Atkins, to be used in Swedish conditions. The main targets were to improve the areas of the tool associated with energy conversion and renewable energy sources, and to test the tool in a real case. A planned construction of a new campus in Albano, Stockholm was chosen for the pilot study. A 3D model was built in the tool and the carbon footprint was calculated for a variety of combinations for energy supply to the future area.
L?ggning av ett kils?gat br?dgolv
This bachelor thesis contains the findings of an investigation into the laying of wedge sawn wood
flooring.
The advantage of wedge sawn wood flooring is the usage of more material from each board reducing
waste. The boards follow the natural profile of the tree where the root part of the board is wider,
and the top part is narrower. The technique involves placing boards side by side with adjacent boards
in opposite directions. The thick base of one board is neighbored by the narrow top of another, this
creates a pattern of wedges in alternating directions, known as a ?root and top? system.
Existing literature into this type of flooring is sparce.
Cooking banana farming system in rural Uganda : a comparison between agroforestry systems and non agroforestry systems
The demand for food, feed, fibre and fuel has increased in Uganda over the past 50 years due to population growth. Recurring extreme climate events such as drought and flooding, in combination with large-scale land degradation, have led to declining crop yields. Lack of equipment, money and socio-economic issues has contributed to low yields. However, the soils in Uganda have the potential to produce much higher yields than they do today.
This study, which was carried out in April-June 2013 in Kkingo District, south-east Uganda, examined the effects of agroforestry on yield of cooking bananas in small-holder farming systems. Six farms practising agroforestry and six farms with no agroforestry, which were chosen in cooperation with the NGO Vi Agroforestry, were compared.
Är grön det nya svart? - En studie om hur miljövänliga kläder skapar konkurrensfördelar
Bakgrund och problem: Under de senaste 20 åren har en global oro växt kring konsumtionens påverkan på miljön. Faktorer som den globala uppvärmningen, hål i ozonlagret samt katastrofer som Tjernobyl var några av drivkrafterna. Historiskt börjar nu den gröna marknadsföringen att framträda på marknaden. Den delades in i tre faser varav en fas representerar marknadsföring av miljövänliga produkter, designade för att främja en hållbar konsumtion (Mishra & Sharmra, 2012). Det är dock under 2000-talet som konsumenternas miljömedvetenhet leder till en ekologisk trend och livsstil.
Indirekta effekter på marklavars abundans och diversitet vid ökad kvävehalt i marken : en jämförelse mellan opåverkad och lågintensivt brukad mark
Lichens are adapted to bright and sparse forests on oligotrophic ground. Due to a slow growth rate and high light demand lichens will suffer from competition in eutrophic environments. Therefore, lichens have disappeared from managed forests where the forest industry has increased the productivity. A reduced abundance of lichens will affect both biodiversity of the forest and the reindeer winter graze lands. It is important to understand how and for how long fertilization affects the abundance and diversity of lichens in order to protect lichen rich ecosystems.
We have registered the biomass and number of lichen species in eight plots (four nitrogen rich and four nitrogen deficient) and compared fertilized Sami settlements with their oligotrophic surroundings in the nature reserves of Tjeggelvas.
Strängluftning av vallfoder : Inverkan på ensilagets torkningförlopp, spill och smörsyratillväxt
When harvesting ley you hope to get a fast drying and a faster harvest. If there is a
system with round bales, you need to have a dry matter close to 45 %. To make this as
fast as possible, there is made a machine which pick up the grass with an pick-up. It
turn the grass over and put it behind the machine (figure 2 and 4). There are few tests
to prove the efficiency of this machine.
Innovation och kreativitet i en hierarkisk miljö ? Malmö högskola - Medieteknik
Medieteknik är en avdelning på Malmö högskola som dagligen handskas med att vara en innovativ och utvecklande del i en större organisation. Något som skapar möjligheter, men även begränsningar. Högskolans krav, resulterar tillsammans med omvärldens föränderlighet i att avdelningen måste växla mellan struktur, planering, genomförande ? och ? utveckling, innovation av innehåll, utbud, pedagogik.
Syftet med rapporten är att undersöka hur en innovativ och kreativ utvecklingsmiljö skapas och bevaras i en organisation/myndighet. Genom en enkätundersökning skapas det empiriska material som, tillsammans med studiet av högskolans villkor, samt förankring i den teoretiska referensramen besvarar den aktuella frågeställningen: Vilka förutsättningar kan påverka en avdelning att arbeta och agera innovativt inom ramen för den större organisationens styrning och krav?
Slutsatsen är att Malmö högskola ställs inför en rad motstridiga krav som kräver jämvikt inom organisationen, för att arbetet på avdelningsnivå ska fungera.
Bäst före 2014 : En studie om matsvinn i livsmedelsbutiker
SyfteVårt syfte är att ge en djupare förståelse för det matsvinn som uppstår i livsmedelsbutiker genom att analysera och utreda servicelandskapets, personalens och kundens påverkan på matsvinn. Med koppling till detta syfte har vi valt följande forskningsfråga:På vilka sätt kan livsmedelsbutiker arbeta för att minimera sitt matsvinn med hänsyn till butikernas lönsamhet och kundnöjdhet? MetodDenna uppsats är en kvalitativ studie som haft sin början i ett empiriskt problem som vi ville skapa en djupare förståelse kring, vilket innebär att vår uppsats haft sin början i induktionen. Under processens gång har vi arbetat parallellt med empiri och teori, därför har studien haft ett växelspel mellan induktion och deduktion. Insamlingen av material har skett genom primära och sekundära källor där det empiriska materialet skett genom semistrukturerade intervjuer.SlutsatserI vår arbetsprocess har vi kunnat urskilja att servicelandskapet, personalen och kunden är de faktorer som påverkar matsvinnet inom dagligvaruhandeln.
Hinderbanan - en studie om jämställdhetsarbete och kvinnors förutsättningar inom professionella tjänsteföretag
Although women express a desire to be managers and although they constitute the majority of Sweden's newly graduated academics, they are still heavily underrepresented on senior management level in the Swedish private sector, where men hold as much as 95 % of the top positions. Considering the massive waste of resources that this implies, this thesis sets out to investigate the underlying reasons for the skewed gender distribution on senior management level in two Swedish professional services companies - an industry where the described problem has been palpable. Additionally, the thesis explores the effects of actively working for increased gender equality. With a basis in gender and organization theory, a broad theoretical framework has been compiled and applied to a qualitative case study design. The thesis reveals seven distinct impediments, which together create a parable of an obstacles course, that prevent women from advancing the corporate ladder in the same manner as their male colleagues.
Stadsmöbler för ungdomar :
The title Urban furniture for young people reveals that this
paper handles two central phenomenon in landscape architecture;
the form and content of the urban spaces, respectively
the users and their need for an appropriate outdoor
environment in the city. In this paper youth is referred to as
15-18 year olds and the paper is based on theories of their
physical use of the city?s outdoor environment. Urban furniture
refers to equipment and components in the public room
which becomes furniture when people takes them in to claim
and gives them a meaning and a function that is useful for
the moment. The starting point is that the users, in this case
youths, defi nes urban furniture as something signifi cantly
more than traditional park furniture, bicycle racks and waste
baskets.
This paper aims to investigate how the city?s furniture can be
developed to meet the youths need to see each other, move
and make their marks in the public room.
The theories about how youths uses the city are presented
in the Theory chapter.
Dammsäkerhetsutvärdering samt utformning av dammregister och felrapporteringssystem för svenska gruvdammar
A lot of mine waste rock and tailings arise from all mining processes and have to be stored in an appropriate way. Tailings are deposited in impoundments retained by tailings dams. The objective of tailings dams is to retain the slurry from the mining process and in that way prevent spill into the surroundings that might be harmful for the environment. Tailings dams are often constructed as staged embankments so that construction costs and demand of materials are spread more evenly over the period of deposition.The objective of this thesis has been to compile information about and evaluate events at Swedish tailings dams and also to develop a collective database for all Swedish mining companies for all tailings dams and all events that occur at tailings dams.Information about 60 events at Swedish tailings dams has been gathered and evaluated. The evaluation has been performed by comparison between and analysis of individual parameters and also by use of a multivariate statistical method called PLS.