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4465 Uppsatser om Specific energy consumption - Sida 57 av 298

Utvärdering av webbportalsteknologier

The purpose with this project is to evaluate which of today?s technologies for creating web applications is the most suitable to use when constructing web portals. From a great amount of different technologies, five of the most widespread and well known technologies have been chosen and closely examined on nine different web portal specific criteria. The result from this evaluation is a table where all the grades for each technology is displayed. With the help of this table, it is possible to get an idea about what technology is the most suitable to use when constructing a specific web portal.

Vattenbehov och olika system för vattentilldelning till nyavvanda grisar :

We all know that water is very important for both animals and humans. When we are weaning the piglets from the sow we must guarantee that the piglets can start to drink more water instead of sow milk. The first thing to check is always the quality of the water that is to be used. To secure that, you must take a water sample. If the water is inadequate it can bring a lot of problems and diseases.

Opera i Stockholm, Galärvarvet

Suggestion for a new operahouse in stockholm, förslag på nytt operahus i stockholm. Stockholmsoperan..

Rostfritt stål som ett alternativt material till koppar i tappvattenledningar för bostäder

Today?s wind power plants are only compensated for their reactive power consumption at no-load. As the wind power plants grow bigger the amount of reactive power they need also increases. This is no longer a problem that can be ignored, especially as the net owners are beginning to charge the reactive power they transport.In this thesis a couple of different methods of compensation and their prices will be discussed and evaluated. Problems, such as self-excitation, that can occur if one fully compensates the wind power plant will also be brought to surface.

Produktutveckling och prestandatest av ett vattenvärmedrivet torkskåp : Jämförelse mellan tre utvecklade versioner av ett vattenvärmedrivet torkskåp

AbstractElectricity consumption is a globally increasing problem caused by the high share of electricity produced in coal power plants. These contribute to high carbon emissions when only about 1/3 of the heat generate electricity and the remaining 2/3 of the heat cools off. Combined heat and power plants (CHP) have high efficiency because they use the residual heat for domestic heating. The CHP plant often use fuels from renewable resources, giving them a lower carbon footprint, but are also depending on the heat demand. If electric powered products such as drying cabinets convert to heat powered products more environmentally friendly electricity will be produced by CHP plants, which can supplant electricity, produced from coal power plants and reduce carbon emissions.

Utfodring av hästar i tropiska klimat : möjlighet att använda regionala fodermedel i Tamil Nadu, Indien.

This study consists of a literature study and a survey in Tamil Nadu, India. The aim of the study was to get an understanding of horse feeding in tropical climates and what kind of feeding related problems that could occur because of the fodder. Information and data were collected from eight different stables and from Tamil Nadu University of Agriculture in the region of Tamil Nadu in March-April 2009. The horses in Tamil Nadu were given rice straw, unknown grass, Cynodon dactylon, lucerne, maize, Pennisetum glaucum x Pennisetum purpureum hybrid and Chloris gayana as roughage. As concentrates, the horses were given wheat bran, oats, barley, soybean meal, maize, carrots, coconut cake, peanut cake, horse gram and chick pea.

Solcellspolicy avseende Mikroproducenter : Ett förslag på policy avseende solceller hos privata mikroproducenter till Öresundskraft AB

The development of solar photovoltaic (PV) is increasing,with declining module prices and with a strongenvironmental profile. Policies are developed around theworld to achieve the targets set for renewable energy.In Helsingborg, the local power company Öresundskraft isworking with solar PV to achieve the goals of the city.With their vision: - Energy for a Better World and Powerfor the Region, their work with developing the local solarPV market is continuing and the next step is to create asolar PV policy. Today their offer is 1 SEK/kWh for theexcess electricity delivered to the grid.It turns out that compensating the customer is a vitalpolicy and it has to be dynamic to follow the decisions ofpolitics. The same survey shows indeed, thatenvironmental and technical part is of interest. Solar PVwill be supported locally to act on environmentalsustainability and locally produced electricity and withthis Öresundskrafts vision will be achieved..

Analys av det nordiska kraftnätets påverkan på det svenska elspotpriset.

During the last few years, there has been a lot of debate regarding the price ofelectricity on the Swedish market. According to a recent survey from Sifo, anon-bias governmental institute for consumer research and testing, the priceof electricity is what worries Swedish households the most. An investigationof the eciency of the Nordic power grids inuence on the Swedish spotprice is therefore both relevant and valuable. Three quarters of all electricityproduced in the Nordic region is traded at the Nord Pool Spot power market.This survey examines how much of the variation of the swedish spot pricecan be descried by the variation of the nordic system price and how much iscaused because of ineciencies in the power grid. Primarily, linear regressionwith adjustments for endogeneity and heteroskedasticity has been used in orderto analyze data obtained mainly from Nord Pool Spot and Vattenfall AB.The results show that the variation of the system price can account for all butabout 40% of the variation in the Swedish spot price.

Från den stora världen till den lilla familjen : En kvalitativ studie om rekrytering, utredning och utbildning av familjehem för ensamkommande barn

This study aims to examine how professionals in the field of foster care works with recruitments, assessment and education of family homes for unaccompanied children. The intention is to find out in case there are specific needs that justify specific approach to ensure that the child's best interests are indicative and satisfied. The survey was conducted based on a qualitative method and empirical data gathered through semi-structured interviews with employees in the social services. The result shows that there is a need for more and specific education for families receiving unaccompanied children. It is motivated by the needs and conditions that are often common for this group.

Djurskyddslagen och renskötseln

The aim of this literature review was to discern which legislations and regulations related to animal welfare that comprises reindeer and their significance in reindeer husbandry. The Swedish Animal Welfare Act (1988:534) was enacted July 1, 1988 and its main purpose is to ensure a good animal health and environment. Animals that live in a good environment with good health is considered to have good welfare, which can be described as an individual's condition in relation to its surroundings. Reindeer herding is an extensive form without daily management. In reindeer husbandry there are eight specific seasons over the year and reindeer are handled as they migrates between pastures, get earmarks, are sorted for transport and slaughter.

Science fiction-litteratur ? Hur gör folkbiblioteken i praktiken? En studie av fyra bibliotek.

This essay aims to examine how science fiction literature is supported and made available for readers at four public libraries. Each library has its own opinion of what a public library?s role in society is, and that affects how literature acquisition and media exposure is done at that particular library. To explore this, the author uses a modified version of Elzinga and Andersson?s theory of traditionalism, pragmatism and emancipationism.

Genetiska och epigenetiska samband mellan näringsförsörjning och fertilitet hos mjölkkor

The dairy cow?s ability to resume estrus after calving and to conceive is affected by their metabolic status after calving. For high yielding cows there is a high risk that the feed intake will not be sufficient to cope with the increased energy demands after calving, and the cow will end up in a state of negative energy balance. Energy balance can be measured in various ways, for example by body condition score or by plasma concentration of several metabolic hormones and metabolites. After calving, endocrine pathways stimulate tissue mobilization; insulin signaling is blocked, the concentration of insulin-like growth factor-1(IGF-1) and leptin decreases, and the concentration of growth hormone (GH) increases.

EMC problematik och el-kvalitet i elkraftnät

The dissertation deals with an account of actual problem, which can arise within EMC and power quality. The cause of power interruption and what can be done to minimise the power interruption is discussed. It also includes a definition of planning levels and which factors one needs to have control over to carry out a possible planning strategy and how the local distributions net could be more secure. The electrical net could be secure but no system can be free from interruption.The dissertation examines two distribution transformers: GLA40T1 (Glansås) and T399 in Tranås Energy which don?t have regulators.

Läsundervisning- att följa en metod eller ej? : En jämförande studie om lärares val av metod i arbetet med den tidiga läsinlärningen

This is a study of how four teachers work with pupils? early literacy learning. Interviews were conducted with two teachers who chose to use a specific method, Writing to Read (WTR), for teaching pupils to read, and with two teachers who had not chosen a specific method. The aim of the study was to compare how the teachers worked, their motives for their choice of method, and the ideas the teachers have about early literacy learning. To see whether the teachers? choice of method was related to the individualization of the teaching and their views of pupils? learning in interaction, Vygotsky?s theories about children?s learning have been used.

Kolbalansen vid olika skötselstrategier för skogen på Tagels fastighet.

Since the 19th century the concentration of CO2 in the atmosphere hasincreased by 40 percent as an effect of the use of fossil energy sources.Increased concentration of CO2 will likely lead to increased temperature,changes in precipitation, rising sea level and increased frequency of extremeweather like storm events. A step to reduce emissions of CO2 and mitigateclimate change, for the property of Tagel, can be to adopt new silviculturalstrategies and analyse which is the most effective. As a result of that, threescenarios was produced, business-as-usual (BAU), increased set aside landand energy. An introduction of windpower at Tagels estate (property) andeffects on carbon balance was also examined. By using the Heureka systemand LCA-analysis in this study, it showed that the scenario of increased setaside land was the most efficient way to reduce carbon dioxide (CO2)emissions for the analysed period of 100 years.

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