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1226 Uppsatser om Heat loss - Sida 58 av 82
100 % svenskt foder till mjölkkor :
As for today, a large quantity of protein feeds is imported from other countries to be used in
the Swedish dairy production. The main import is soya from Brazil. The soya-production in
Brazil results in negative consequences for the natural environment in the area, and the long
transport of the feeds requires a lot of energy. The organic dairy production in Sweden is,
with the highest probability going to be forced to use 100 % organic feed to the cows in the
year 2005, due to new EU-rules. These are some of the causes why there are reasons to look
closer at the possibilities to feed Swedish cows with only Swedish feeds.
In this study, I have looked at the KRAV-rules for organic feeding, where the goal is feeding
with only KRAV-approved feeds.
Kväveförluster och energianvändning på mjölkgårdar i västra Sverige :
Protecting the environment has with time grown to take a more central role in the society.
Agriculture plays an important role in the society since this sector produces our food. More
thorough research on how agriculture affects the environment is therefore motivated. This
research can be used to improve the agricultural practice from an environmental point of view.
This is something that both the farmers and the consumers can profit from.
This study aims to form the basis for creating environmental indicators for use of nitrogen and
energy on dairy farms. Twenty-three farmers in western Sweden have been interviewed about
their farms, both organic and conventional. They produce milk with different intensity, defined
as the amount of milk delivered (sold) per hectare of arable land.
Alternativ för värme- och kylaförsörjning i planerade kontorsbyggnader på Arlanda
This thesis consider alternatives for heating and cooling planned office buildings at Arlanda airport. The thesis is divided into three parts where the third part is a shorter synthesis of the two first. In the first part the energy demands of the buildings are modelled in a computer program. Two different building models are created, one more conventional and one with good energy properties. The results shows that with proper construction and ventilation systems etc.
Förekomst av parodontit och karies hos typ 2 ? diabetiker
The aim of this study was to describe the prevalence of gingivitis, periodontitis and dental caries in individuals with type 2 ? diabetes. The study was conducted in a form of a general literature review with the restricted to the following conditions: human studies, English, and articles published between 2007 - 2012. Articles lacking a control group were excluded. The data were collected through searches of the medical database PubMed. A compilation of 11 scientific articles was examined.
Kommunikationsstrategi
The value of a company's employees is considered to be higher and more important for a business success than ever. Losing employees is not only a loss of valuable knowledge, it also implies a significant cost related to the recruitment of new employees. To attract potential personnel, it is important for the companies to understand how to communicate with talents. Choosing a communication medium for a job advertisement is not easy when new options constantly arise. Despite the development of new communication mediums and channels, such as social mediums, the traditional communication medias still remain available.
En etnisk secession : Varför Biafra beslutade sig föra att bryta sig loss och hur lärare kan göra det tydligare i historieämnet
The aim of the analysis in this essay will be divided into two cases. In the first, I will study the formation of a new State and why a geographic area of a country decides to make an secession. The focus will be on the secession of Biafra from Nigeria in 1967 and how the causes and explanations behind this secession, get in the Swedish literature as well as the international literature. In Case 2, I will use a explanation games, as a means to give pupils more understanding and to make it more clear, why a geographical area chooses to make a secession, and where I will use the secession of the Biafra from Nigeria as my example (Case 1). To more easily understand and answer the question, why the geographical area of Biafra in south-eastern Nigeria chose to do an secession, I have chosen to study my Case 1 from a social and political context.
Konstruktion av kostnadseffektiv fläkt till härdningsugnar
Scana-Booforge is a Swedish company which specialize in heat treatment of various metal. The treatments take place in quenching ovens, where fans are used to circulate the hot air. The fans used today do not have a satisfactory lifespan. This thesis aims to develop a new design of the fans for the quenching ovens, and the goal is that the new fans will bring cost savings for Scana-Booforge.The design development process started with mapping out the environment in which the fans operate, and with analysis of the existing fan structure and damages, in order to establish the cause of failure and of short durability. The performance of the fan were also established at this stage.
Biomass losses during short-term storage of bark and recovered wood
Storage of biomass is associated with problems like heat development, biomasslosses, and reduction of the fuel quality. Certain processes such as biological- andchemical degradation are responsible for these storage problems. This master?sthesis was carried out at Vattenfall Research and Development AB and is alignedtowards quantifying the biomass losses from short-term storage (1-2 months) ofbark and recovered wood. The biomass was stored in outdoor piles during differentseasons, campaign 1 (summer) and campaign 2 (autumn).
Emotionerna stolthet och skam och de divergerande multiplexa sociala banden : En intervjustudie av tre ungdomars sociala nätverk av sociala band och dess oscillation mellan att existera på och utanför Internet
The purpose of this qualitative study has been; how social bonds are interlaced between the social worlds contained within the analytical division of ?outside Internet? and ?within Internet?. What happens with the social bond as the individual oscillate between this analytic bisection? This purpose raises important questions of the use of Internet in everyday life.A new stance is taken toward studying the Internets integration into everyday life. The focus is adjusted to the importance of emotions.
Ungdomars medvetenhet om säkerhetsrisker med bankverktyg
According to Nosti (2012) banks target youths to find new customers by giving them special offers such as debit cards from a relatively early age. However, Moschis and Churchill (1979) point out that age can affect the level of knowledge in the consumer. Therefore, this essay focuses on youths as consumers. Specifically, youths? awareness of security risks in using bank tools such as debit cards or internet banks was studied.
Implementing a receiver in a fast data transfer system : A feasibility study
This report is an outcome of a master degree project at Linköpings University in co-operation with Micronic Laser Systems AB. The purpose with this master degree project was to investigate how to implement a receiver in a data transfer system. The system consists of several data channels, where every channel consists of three parts: driver, transmission lines and receiver. The driver send low amplitude differential signals via the transmission lines to the receiver that amplifies and converts it to a single-ended signal. The receiver has to be fast and be able to feed an output signal with high voltage swing.
Energideklaration- Vad är det och hur ska det hanteras i fastighetsbranschen?
AbstractThe Energy Declaration is a law that will come into effect October 1: Th 2006. This report has Värnamo municipality as principal and shall clarify what the estate owner in general and Värnamo municipality in particular need to know about this law. Another part that is going to be dealt with is how large the future need for energy experts in this field will be, and which competence that will be demanded for them.The work will in general deal with simplified energy declarations for apartment houses and public buildings, since these buildings are the first to be involved with energy declarations.The energy declaration will consist of a number of important components.? Energy power i.e. how much energy the building consume? If the ventilation control is done? If the radon measurement is carried out? Recommendations of measures to improve the energy power? Reference value to compare the buildings energy power againstAccording to the law the declaration shall been made by an independent expert, which will need certain information for this.
Energieffektiv design av ett inbyggt flashminneshanteringssystem
The report is the result of a master thesis at ENEA AB during the fall of 2009. Itaims to create a specification of flash memory management system which focuseson power efficiency and low RAM usage for embedded systems, and to design andimplement a prototype of such a system to facilitate further development toward thecreated specification. The system used by ENEA today is a Flash Translation Layer(FTL). It has a complex structure which prohibits modifications and customization,therefore a new flash memory management system needs to be developed.The suggested solution uses a translation layer called Metadata FTL (MFTL), wherefile system metadata and userdata are separated from each other in order to improveperformance. The partition holding userdata uses a block-level mapped translationlayer system called Fully Associative Sector Translation FTL.
Att rädda världens djur : en retorisk analys av Parken Zoo:s kriskommunikation
Crisis communication can make a crisis turn into a double crisis. The purpose of the thesis is to analyze by which rhetorical means a double crisis can occur. With the Swedish zoo Parken Zoo as a specific example, this essay examines the crisis communication during the crises that started with the tv-show Kalla fakta. The tv-show revealed that Parken Zoo killed and slaughtered endangered and sacred animals. When asked about the specific animals, the head of the zoo gave different answers ? which contrasted with former employees testimony.
Utvärdering av ett Bränslecellsdrivet Flygplan.
With the increases in fuel costs due to the depletion of the world oil reserves and the increase of greenhouse gasses as a consequence to using oil as a fuel many companies are looking to new and innovative ways to power their aircraft. One of these new ways to power an aircraft is using fuel cells powered using hydrogen and oxygen, thus producing nothing but water vapour and small amounts of nitrogen dioxide as well as trace amounts of other emissions. Both Boeing (1) and Politecnico di Torino (2) have shown that it is possible to build an all-electric aircraft powered by fuel cells. Both flights used small, two-seater aircraft and a constant between them was the loss of the co-pilot seat due to weight and lack of space. As this paper will deal with a commercial aircraft a primary concern is the cargo and passenger capacity and whatever impact switching propulsion system has on these.