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293 Uppsatser om Crop rotation - Sida 12 av 20
Förbättring av väggfäste för flatscreens
The project was carried out in cooperation with the department of product development IOS at IKEA. The work included improvements of a new existing product that Ikea soon will release on the market, Observatör, a wall bracket for flat screens. The product is supposed to fulfil the needs within this market for IKEA. However, since Ikea was not satisfied with it, our work was to carry out the improvements that were specified in the beginning of the project. Another task in the project was to develop a side-product that is supposed to be used together with Obeservatör for storage of DVD/decoders.The project included labour as problem definition to final technical drawings and a prototype.
Automatisk lockmekanism : från idé till prototyp
Wavecraft AB develops medical equipment for heating of organic synthesises. The heating is done with microwaves, which improves the process in both speed and accuracy compared to the more traditional methods where heating elements are used. This report discusses the developement of an automatic lid mechanism for one of Wavecraft's product prototypes. The company assumes that the final product will be integrated by customers into fully automated systems, and the upgrade from a manually to an automatically controlled lid is therefore an important step in the product's developement process.The first stage och the project was an idea generation process. The ideas generated here were organized into five different concepts of which the best one was selected through the use of a concept matrix.
Herons ångkula : Bestämning av verkningsgrad
Detta arbete beskriver hur Herons ångkula fungerar och hur den har byggts.Ånkulan konstruerades för ca 2000 år av Heron.Meningen var att få fram en verkningsgrad eftersom denna var okänd. Verkningsgraden blev aldrig konstaterad. Endast en teoretisk beräkning för verkningsgraden gjordes. Kulan sattes inte i rotation av ångtrycket som byggdes upp när det eldades under denna.Anledningen var troligen att det var för mycket friktion i tätningen som skulle tillföra matarvatten in i kulan. Värmeöverföringen mellan gaslågan och kulkroppen var inte heller den mest optimala.Kulan med tillhörande kringutrustning byggdes under dec-07/jan-08 efter eget tycke och utan någon existerande ritning.
Detaljhänsyn efter slutavverkning : kvantitet och inverkan på framtida produktion hos SCA i Västerbotten
According to FSC (Forest Stewardship Council) shall at least a mean of 10 trees per hectare including riparian zones and other areas with high biological values be left in final felling. In addition large clear areas should not be created and all retained trees with high environmental value shall be spared. To leave trees in final felling means a lower cutting volume and hence a lower income from the cutting, but it also means that the production in the next generation becomes less because of competition. The aim of this study was to evaluate the effect retained trees have on the production in the new generation of forest, and to investigate if there is any way to lower this effect. The environmental care has also been estimated by the amount left in final felling.
Magasin för lagring av vatten och växtnäring
Structural rationalizations and regionalization of the agricultural sector in Sweden has lead to unevenness in thedistribution of plant nutrients. Nutrients are lost from crop producing farms as harvest products are sold, whilefarms with animal production often have manure in excess of their needs. In addition to this the retention ofwater and nutrients in naturally occurring wetlands has decreased due to a reduction of wetlands in number andsize in the agricultural landscape. This increases nutrient levels in agricultural run-off and causes eutrophicationas well as nutrient losses from arable soils. One potential solution to both problems would be to store nutrientrichsurface water from agricultural areas and use it for irrigation of agricultural crops.
Självgående renslastare till sockerbetor :
Our greatest interest within crop farming is to grow sugarbeets, that?s why we want to
write about something new in this sector. We heard that a new concept had come to
Sweden so we wanted to find out everything about this machine.
This new technique was a self-propelled cleaning loader for sugarbeets. This machine is
supposed to replace a loader and a cleaning machine when the sugarbeets is going to be
loaded, cleaned and delivered to the sugerbeet factory. The cleaning loader picks up the
sugarbeets with rollers from the pile, which is placed close to the road.
Brikettillverkning på gårdsnivå :
In my work I have chosen to examine the profitability for small scale production of hemp briquettes. My study also includes a review of which briquette technique that is the most common one among small scale producers. The reason that I have chosen this subject is because of the discussions about climate and energy that we face almost every day. I also think the subject is extra interesting in these days when the grain prizes are at a historic high level.
In order for me to achieve a reliable report, a hemp and briquette producer has given me the actual data from his farm. In that way I have been able to make my calculations from a concrete perspective.
Förbättrad hållning kring axelleden genom funktionell träning - En studie på kontorsarbetande kvinnor
Eight out of ten Swedes has once in a while pain in the back, neck or shoulders. This often depends on inactivity and monotonous work under a long time. Pain affects us mentally since the body and mind affect each other, which can lead to an evil circle of pain and depression. A typical imbalance in an office worker with the arms in front of the body while working is that the muscles on the front of the trunk will be shortened, since they never work with their full length and become strong because of the constant use. On the other hand, the muscles on the back of the trunk will be weakened and elongated, since they are working in an extended and static position.
Exosomes as a potential mechanism of intercellular spread of prion protein
Structural rationalizations and regionalization of the agricultural sector in Sweden has lead to unevenness in thedistribution of plant nutrients. Nutrients are lost from crop producing farms as harvest products are sold, whilefarms with animal production often have manure in excess of their needs. In addition to this the retention ofwater and nutrients in naturally occurring wetlands has decreased due to a reduction of wetlands in number andsize in the agricultural landscape. This increases nutrient levels in agricultural run-off and causes eutrophicationas well as nutrient losses from arable soils. One potential solution to both problems would be to store nutrientrichsurface water from agricultural areas and use it for irrigation of agricultural crops.
Side effects of biological control agents in agriculture : does the bacteria Bacillus amyloliquefaciens affect the earthworm Aporrectodea longa?
Pathogenic microorganisms pose a big threat towards food production. Meanwhile, negative impacts on humans and environment are seen by the use of pesticides. Biological control agents are an alternative to the use of chemical pesticides, and plant-growth promoting rhizobacteria, such as Bacillus amyloliquefaciens has been shown to have good properties as biocontrol agents. Before these bacteria can be used commercially their impact on other soil organisms has to be evaluated. This thesis looks into what biocontrol bacteria are and how they might affect earthworms.
Två svenska socknar omkring nödåret 1867 : en jämförelse i befolkningsutvecklingen
Uppsatsen undersöker två svenska socknar kring nödåret 1867. Syftet är att se de direkta och varierande konsekvenserna av en missväxt.Socknarna är Vilhelmina i Norrland och Döderhult i Småland och den avgränsade tidsperioden är 1865-1870. Undersökningen har gjorts utifrån församlingarnas kyrkoarkiv samt Statistiska Centralbyråns (SCB) befolkningsstatistik. Forskningsläget visar på varierande konsekvenser av nödåren 1867-1869 och ett tydligt samband med en ökad emigration till Nordamerika, men det finns ingen liknande jämförelse på mikronivå som detta arbete kan visa.I uppsatsen finns en översikt över Sverige på 1860-talet, missväxtåren samt en beskrivning över Vilhelmina och Döderhult. Stapeldiagram presenterar de två socknarnas födda, döda, utflyttade, emigrerade samt totala befolkningsmängd.
Svenskproducerat proteinfoder till slaktsvin
Soybean meal from South America is the most common protein feed used for animal production in Sweden. Production of soybean has negative effects on the environment and the transports from South America to Sweden causes considerable CO2 emissions. Therefore it is a growing interest in locally produced protein feed in Sweden. Protein feeds that are possible to grow in Sweden are rapeseed, peas, faba beans and lupins. Those are adapted to the Nordic climate and are perfect to grow in cereal rotations.
Skogstillväxten ca 20 år efter plantering på Flakmossen : dikningens och gödslingens betydelse vid beskogning på en avslutad torvtäkt i Värmland
This study was performed in an afforestation experiment established 1982 on an abandoned peat harvesting area, Flakmossen, in the province of Värmland, SW Sweden. The experimen-tal design include planting with Scots pine (Pinus sylvestris), in combination with various drainage intensities (20, 30, and 40 m between ditches), and fertilizer doses 0, 100, and 200 g PK per seedling applied at the date of planting.
The aim of this study was to achieve more knowledge about the conditions on afforestation of peat harvesting areas, especially regarding drainage intensity and fertilization requirements, by means of determining the stand growth and yield in the Flakmossen trial.
The forest growth did not differ significantly between the drainage intensities tested when the same amount of phosphor and potassium fertilizer was added. Thus, shorter distances between ditches than 40 m can not be recommended.
When no fertilization was carried out seedling survival was very low, and the growth of sur-vived seedlings was poor. The largest diameter and height growth were observed in the areas where the highest dose of phosphorus and potassium (200g/seedling) was given.
ARBETSVÄXLING SOM KOMPETENSHÖJANDE ÅTGÄRD FÖR INTENSIVVÅRDSSJUKSKÖTERSKOR
Bakgrund: I Stockholmsregionen råder det en brist på intensivvårdssjuksköterskor. En orsak är hög personalomsättning där många intensivvårdssjuksköterskor lämnar intensivvården inom två år efter anställning på grund av hög arbetsbörda, otillfredsställande lön eller bristande möjligheter till kompetensutveckling. Arbetsgivare som uppmuntrar till kompetensutveckling får fler intensivvårdssjuksköterskor att stanna kvar inom intensivvården även om arbetsbördan är hög.Syfte: Syftet med denna studie är att undersöka vad intensivvårdssjuksköterskorna anser om arbetsväxling som kompetenshöjande intervention.Metod: Studiedesignen var kvalitativ och som metod har fokusgruppsintervjuer använts. Materialet har analyserats med hjälp av kvalitativ manifest innehållsanalys.Resultat: Studiens huvudresultat var deltagarna ansåg att arbetsväxling fungerar som kompetenshöjande intervention. Resultatanalysen utkristalliserade totalt fem teman: arbetsväxlings inverkan på kompetensen, arbetsväxlings inverkan på individen, arbetsväxlings ömsesidiga påverkan mellan avdelningar, arbetsväxling som kvarhållande åtgärd och anledning att stanna kvar inom intensivvård.Slutsats: Studien visade på att intensivvårdssjuksköterskan anser att arbetsväxling är en kompetenshöjande åtgärd för intensivvårdssjuksköterskan.
Planering : fallstudie av en mjölkgård
The purpose of this paper is to give examples of different ways of economic planning and
calculation within agriculcture. My aim is to use a couple of them as an explanation of a case
from reality. My choice went to budgetsimulation and balanced scorecard since those are best
suited in this specific case.
In the information retrieval I present different instruments of economic planning like theory of
cost, budget and productcalculation. The budgetsimulation describes how to use the different
methods in a long term economic planning. The balanced scorecard is also a model of longand
short-term planning but besides the economy planning it?s also a reminder of your
personal goals.
In the model I have used a dairyfarm as a case.