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491 Uppsatser om Cover crops - Sida 24 av 33
Pellets - en framtidsmarknad?
With higher prices for oil and increased focus on fossil fuels impact on the environment the heating sector are searching for alternative fuels. Pellets are a quite new product whose production has risen exponential in recent years. Today there are small-, medium-and large-scale users, where the large-scale consumers are the heating sector. The heating sector is mainly using oil to cover the increased demand during cold periods.
The purpose of this study is to analyze the potential of pellets if it would replace thermal power plants oil and coal. The study will also analyze the economic impact a conversion would mean for a heating plant and if the pellet is a reasonable substitute.
2008 statistics from the Swedish district heating association were analyzed and a calculation was performed to determine how many tons of pellets is needed to replace coal and oil.
Småskalig biobränsleeldad kraftvärmeproduktion : teknik och investeringsutrymme
To achieve the requirements to decrease emissions of greenhouse gases by 20 % by 2020, Swedenneeds to increase its use of bioenergy. In doing so it seems natural that those who already haveaccess to large amounts of biofuels in the form of by-products such as straw, wood chips anddigestible materials take advantage of these assets locally. By combining production of heat withpower production at the farm it may be possible to not only reduce the direct use of fossil fuel forheating but also reduce energy costs.The purpose was to simulate different cases of using a small scale biofueled combined heat andpower plant for farm-based systems. A MatLab-model was developed and used to draw conclusionsabout the costs for production of heat and electricity with different conversion technologies.The model uses climate data to simulate the variations in heat energy demand on a day-to-day basis.The given heat demand is the base of the simulation and from this the possible electric output iscalculated. This study has focused on the impact of the following properties: electric-, heat- andtotal efficiency, fuel, fuel price and specific fuel requirements.
Pilotstudie för att utvärdera effekten av L-Mesitran : honungsbaserad sårsalva : vid behandling av yt-pyodermi hos hund.
Green manuring is a way of creating an organic fertilizer by growing a crop that is mowed down. Besides the fertilizing effect this method has been shown to have a positive influ-ence on soil organic matter as well as weed flora, and green manure is an important me-thod of weed control in organic farming in parts of Sweden. However, the release of nu-trients from the green manure varies and can therefore be difficult to control. Risks for losses of nutrients are also present. Although the area of organic farmland is increasing in Sweden, the use of green manure is decreasing.This report contains a literature study which compiles research on the functions of green manure in a cropping system and also how the crop can be used if harvested, for example to produce biogas.
New Business Model for District Heating Firms Stabilizing the National Energy System with a Future Variable Electricity Production
The aim of this thesis is to develop a new business model for district heating and cooling firms which can contribute to a stabilization of the Swedish national energy system. The business model is developed for a district heating and cooling firm and is exemplified with Fortum Heat. The theoretical investigation around the topic creates a rigid base for following qualitative empirical studies. Osterwalder?s canvas for business model generation is used together with a Casual Loop Diagram to identify a number of business opportunities which stabilizes the national energy system.
När det väl var dags var det bara att hoppa in i förskoleklassen : Ett arbete om övergången mellan förskola och förskoleklass
AbstractThe purpose of this work is to contribute knowledge about the transition of children from preschool to preschool classes. The experiences of pedagogical staff, parents and children are described, based on four deepening questions. The questions are about what the actors experience as positive and what the difficulties were in the transition process, and they also cover the differences of children and collaboration between actors. The method consists of qualitative interviews with parents, children, and pedagogical staff. The interviews concern the experiences of transition from the different actors.
Förebyggande av hypotermi under narkos på hund och katt: vad görs på svenska djursjukhus idag, och vilka evidens finns för olika behandlingsmetoder?
Hypothermia during anaesthesia is a well-known phenomenon that may cause several side-effects such as greater risk of postoperative wound infection and increased risk of heart complications. The most efficient way to avoid this is to prevent hypothermia from occurring. The aim of this paper was to compile the research on the most efficient way to prevent hypothermia during anaesthesia for cats and dogs, and to compare these results to how Swedish animal hospitals prevent hypothermia today. To investigate this, a survey was sent out to several animal hospitals around Sweden to see what methods they used to prevent hypothermia in their clinics.
It is difficult if not impossible to prevent the body temperature from falling slightly when anaesthesia is induced because of the drug interactions in the body that follow from the drugs given. A 1-1,5°C decrease in body temperature is to be expected and is difficult to avoid.
Profitability and competitiveness of grain handling at farm level
The Swedish agricultural sector is currently experiencing substantial structural changes, where the number of agricultural enterprises continuously decreases and the average farm size increases. In order to maintain competitiveness, it is important to be aware and adapt to changes concerning the surroundings of the company (Johnson et al., 2011). Agricultural commodity prices sharply fluctuate on the global market in recent years, affecting the profitability of farmers. High volatility market requires tools to reduce price variations and increases the need of decision-making (Bouder & Beth, 2003). Farm-based grain handling facilities increases the sale options regarding agricultural commodities; a flexible strategy to get additional compensation for the storing the grain produced on the farm (Edling, 2002; Edwards, 2013).
Obligatoriska ansvarsförsäkringar : deras ändamål och ändamålsenlighet
This paper treats the differences in terms of insurance between optional and compulsory third party liability insurances. It also treats the purpose of the compulsory third party liability insurances and their accordance with that purpose. The primary purpose of the optional third party liability insurance is to ensure the policyholder financial resources to cover possible claims for damages. The primary purpose of the compulsory third party liability insurance is to render possible the compensation of a third party for damage done. The policyholders financial ability to pay damages is of subordinate interest, and the purpose of compulsory third party liability insurances is thus twofold.
Arbetstidsdirektivet och arbetstidslagen - En utredande studie
Sweden is a member of the European Union since 1995. The European Union issues directives that cover different areas. Member states must implement these directives into their national legislation. The European council issued in 1993 a directive that took action on the organization of working time, also known as the working time directive. The full name is: Council directive 93/104/EC of 23 November 1993 concerning certain aspects of the organization of working time.
Utveckling av substratmixen vid Mosseruds biogasanläggning : Substratkartläggning och rötningsförsök i laboratorieskala
The world?s growing need for energy together with a desire to ward off the worst consequences of global climate change has resulted in a never seen desire to invest resources in renewable energy sources. Biogas production through anaerobic digestion is one of those growing energy sources. In Sweden there are over two hundred plants that uses this biological process to break down organic substances while producing carbon dioxide and the energy-rich gas methane.This master?s thesis has focused on development of the mixture of different organic substances that is treated at a specific plant, namely Mosserud biogas plant.
Gröngödslingens roll i odlingssystemet : en jämförelse mellan Mälarregionen och Östergötland
Green manuring is a way of creating an organic fertilizer by growing a crop that is mowed down. Besides the fertilizing effect this method has been shown to have a positive influ-ence on soil organic matter as well as weed flora, and green manure is an important me-thod of weed control in organic farming in parts of Sweden. However, the release of nu-trients from the green manure varies and can therefore be difficult to control. Risks for losses of nutrients are also present. Although the area of organic farmland is increasing in Sweden, the use of green manure is decreasing.This report contains a literature study which compiles research on the functions of green manure in a cropping system and also how the crop can be used if harvested, for example to produce biogas.
Towards sustainable rye cultivation : soil carbon and yield modelling for crop rotations with rye
Using the Introductory Carbon Balance Model, ICBM, five different crop rotations with rye
1. Rye-Ley-Ley-Rye-Beans-Rye
2. Rye-Rye-Rapeseed-Rapeseed
3. Rye-Ley-Ley-Rye-Potatoes-Rye
4. Rye-Rye-Potatoes-Wheat
5. Rye-Rye-Potatoes-Beans-Wheat-Rye-Potatoes-Rapeseed
were tested theoretically in four different cultivation scenarios
? Straw left on the field, biogas digestate added as fertilizer. Labelled ?+straw+BD?.
? Straw left on the field, only synthetic fertilizer. Labelled ?+straw-BD?.
? Straw harvested, biogas digestate added as fertilizer.
Skillnader i kungsörnens (Aquila chrysaetos) flyttningsmönster beroende på ålder och klimatfaktorer : En studie för skyddet av kungsörn
This study examines the factors that influence the seasonal movements of Golden Eagles (Aquila chrysaetos), and can thus provide important information that helps to improve the protection of the species. There were two main purposes of this study. First, I wanted to analyze the difference between preferences of juvenile and adult Golden Eagles in their choice of southern or northern hibernation areas. Do younger eagles prefer moving longer distance to southern areas of Sweden? Second, I wanted to investigate how the climate influenced the choice of date of migration in the fall.
Ansvaret för tillämpningen av vissa familjerättsliga skyddsregler : Om gränsen mellan opartiskhet och etisk plikt som jurist
AbstractWorking as a lawyer demands not only legal skills, but also ethical ones due to the involvement with humans. The area of ethics is far from as regulated as the area of law is. The reasons for this are both historical ? as the area of ethics is, in comparison with the practice of law, a relatively new area, especially combined with the traditional work of lawyers ? and technical, since ethics is an area that seems difficult to regulate due to its adopting skills. Ethics looks different depending on which work area it addresses; who you ask; and in what situation it shall be enlightened.
Unga vuxnas åsikter kring bokomslags formgivning : En enkät- och fokusgruppsundersökning
Bokomslaget är ofta läsarens första möte med en bok och det är därför viktigt att bokomslaget tilltalar och sänder ut rätt signaler till konsumenten. Målgruppen unga vuxna, individer mellan 16 och 27 år, är enligt bokbranschen en grupp som är svår att nå. Svårigheten kan ligga i att det finns en viss okunskap i vad unga vuxna tilltalas av på bokomslag. Det är även en bred målgrupp med många olika sorters individer.Målet med denna studie är att ge en bild av vad målgruppen unga vuxna tilltalas av i ett bokomslag. Vi ville ta reda på hur viktigt bokomslaget är för val av bok, samt hur målgruppen ser på omslagets specifika designfaktorer färg, typografi, illustration, fotografi och efterbehandling.