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1207 Uppsatser om Plant composition - Sida 59 av 81
CARABAS III Konstruktion av antenninstallation på helikopter
This report describes the construction work of a radar antenna for the radar systemCARABAS. CARABAS is a long wave airborne ground radar that has been developed bySAAB Microwave Systems and will now be mounted on a small helicopter, Schweizer 300.The antenna should be able to fold up and down. When the radar is in use the antenna islowered and under transport, start and landing the antenna is folded up. An emergency dropfunction should also be included in the design of CARABAS III.The extent of this report includes construction of the antenna, frame structure attached to thehelicopter, mechanism for folding the antenna up and down and mechanism for emergencydrop function. The mechanical design of the antenna and frame structure is based on modaland stress analysis, vibration measurement of Schweizer 300 and frequency analysis, andcalculations regarding aerodynamic drag and mechanics.The exciting frequencies of the helicopter and accelerations at those frequencies weredetermined by vibration measurement and frequency analysis.
Pålade plattor för stora laster : En jämförelse mellan nätarmerade och fiberarmerade betong plattor
Funktionskraven på industrigolv har under senare år ökat. Ett industrigolv skall klara att överföra laster till underlaget samt utgöra ett fast och plant underlag. I denna rapport har två utföranden av påldäck för golv i lagerlokaler jämförts. Den traditionella metoden med armeringsnät har jämförts med en något nyare metod med stålfiberarmerad betong. Jämförelserna har gjorts under förutsättning att golvet skall belastas med 3 ton per kvadratmeter.
Våtmarker för näringsretention i Lillån : var bör de ligga och vilken effekt kan vi förvänta
Construction of wetlands in the agricultural landscape may reduce nitrogen and phosphorus
transfer to streams, thereby reducing the eutrophication of lakes and seas. The agriculturalstream Lillån, a tributary to stream Sagån, ends up in Lake Mälaren and is transporting large amounts of these plant nutrients. The aim of this study was to estimate how hypothetical wetlands of different size and location may reduce nitrogen and phosphorus load from stream Lillån. Estimated nutrient retention in several small wetlands was compared to retention in a single large wetland based on existing data from the agricultural stream and from a nearby smaller stream. Retention in the stream was suggested to decrease along with the nutrient concentration in the water.
Måla med musik, komponera med färg : En retrospektiv studie av den kreativa processen, bland bild, musik och synestesi
The relationship between color and music, and their relation to the human being and our surrounding universe has been subject of studies, theories and experiments since the old ages. From the ancient China and Persia to the present times, philosophers, scientists and artists have tried to explain these connections between color and music and also tried to find answers to this ancient enigma.The invention of the color organ c. 1730, an instrument that was intended to display color in addition to the musical auditive experience, was the first attempt to materialize the practical correlation between notes and color. This correlation has its foundation in the ideas of Isaac Newton, who through his book Optics published only a few years earlier, conformed the beginning of a new art culture: ?Visual music?, in which image and sound are the fundamental elements in the creative process.The ?visual music? concept is not only grounded in the ideas of music and sound, but also in the extraordinary creative capability of certain individuals.
Torkning av vallfrö :
In Sweden, grass is the single largest crop grown. Nearly 1 000 000 Ha grows on the
fields, this is primarily used as feed for livestock. To get a good seed, you need to
handle the crop carefully from planting to delivery. The part that I have been
interested in, is how to dry the harvested seed with out destroying the growth in the
small seed. This is very easily done if you aren?t careful during the drying period.
Odling av vedartade växter i kärvt klimat : En studie om zonkartans användning i Norr- och Västerbottens län
Härdighet för vedartade växter förknippas oftast med zonkartans zonangivelser. Det är dock inte enbart härdighetsiffran som bestämmer om en växt är härdig eller inte. Klimatet på platsen är en avgörande faktor för hur en växt klarar sig eller inte. Via en enkät tog jag reda på vad odlare i Norr- och Västerbottens län tycker om zonkartan och hur de använder sig av den när de väljer vedartat växtmaterial. Nästan alla odlare ställer sig positiva till zonkartans zonangivelser. De påpekade dock brister med användandet av den då den inte tar hänsyn till växtens proveniens, lokalt klimat eller växters krav på odlingsplats vilket är viktiga faktorer som påverkar härdigheten hos växten.
Utvärdering av anaerob behandling av hushållsspillvatten och tekniker för efterbehandling
The continuous process of urbanization results in demands on research and development for ecological and sustainable city development. Because of this, the current systems for wastewater treatment may have to be improved. In order to evaluate new technologies for municipal wastewater treatment, a development project has been initiated for the new district Hammarby Sjöstad in Stockholm. The project is lead by the company Stockholm Water. High environmental standards have been put up for the district, as it must be twice as good as an ordinary new district.
Konstens influenser i dagens reklam : En kvalitativ studie av reklambilder och konstverk
AbstractTitle: Art influences in today´s advertisingimages ? A qualitative study of advertisingimages and work of artNumber of pages: 46Author: Sanna OlssonTutor: Else NygrenCourse: Media and Communication Science CPeriod: Autumn 2009University: Division of Media and Communication, Uppsala UniversityPurpose: The purpose with this composition is to analyse how art has influenced todays advertising images, to see wich influences that can be descovered.Method/Material: Since this is an imageanalys the main material has been consisted of advertising images, a total of seven. In addition, art images have been used as comparative material. The advertising images have been strategically selected, however they are modern and aestetically appealing. A number of questions have been formulated wich is the basis of the analys.Main results: Primarily the study found that art has influenced today?s advertisingimages in different ways.
Parkeringsköp ? ett verktyg vid plangenomförande?
Few issues raise such an engagement as parking areas, both by the municipality, property- and car owners. For car owners, it is of great importance where to park his car. Parking is not simply about availability but also about safety, security and how it affects the urban environment.When the land will be utilized for building development, there are regulations in Chapter 8, § 9 PBL how parking will be provided. Property owners have an obligation to provide parking space and it shall be arranged in an equitable manner, on the site or near it, which gives an opportunity for shared parking facilities. The guidelines for parking that the municipality has adopted should be the starting point for the extent of that space for parking is required when a building permit review.The first thing you should look at, is if the property owner has ability to provide parking space at his own property, but this is not always the best solution in areas such as inner cities.
Balanced Scorecard identifieringens dolda dilemma
The use of balanced scorecards have spread explosively throughout the world during the last decade. This management tool have become very common in a vide spread variety of organisations on all continents. Many balanced scorecard fails though and scorecard theorists often blame the identification- and implementation process as they claim that these lay the foundation for the use of the tool. As my literature study shows, academic research on the area is rare. Particularly the effect on the implementation process from organisational dynamics and organisational structures needs further research.
Examination of mycorrhizal associations of Allanblackia stuhlmannii : a tree under current domestication
Allanblackia is a tree genus native to humid forests in West, Central and East Africa. Its fruits contain large seeds from which edible high-quality fat can be extracted. In order to create a sustainable supply chain of Allanblackia seeds, a domestication program has been initiated with the purpose to enable smallholder farmers to grow the tree as an agroforestry component and cash crop. More knowledge is required to understand the tree?s biology and possible symbioses involving soil microorganisms with plant growth enhancing poten-tial.
Passivhus av helväggselement i träull
Environmental destruction is a growing problem in our world. Almost every day there are new reports concerning that we have to do something about the greenhouse gasses. Simultaneously is the human constantly more eager to have a life with higher standards and therefore uses more energy. The environment is a question that is highly up-to-date and more people try to find solutions on how to save our planet. One way to decrease the energy demand is to build passive houses, where the houses don?t have any active heating.
Societetsparken i Norrtälje : nulägesanalys och utvecklingsförslag
The short term effect of phosphorus in sewage sludge was investigated to establish howmuch of this a farmer can grant him- or herself, if using sewage sludge as a phosphorusfertilizer. Possible differences in plant availability between sludge phosphorus precipitatedby iron, aluminum or calcium integrations were studied in a sandy soil at two pH levels.The sludges were analyzed using pot and incubation trials. As the intention was to investigategrowth limitation due to phosphorus deficiency, a soil with low phosphorus supplywas chosen as well as a low phosphorus application rate. Sludge corresponding to 12kg phosphorus per hectare was applied. Treatments fertilized by sludge were compared totreatments where 0, 6 and 12 kg phosphorus per hectare from mineral fertilizer was applied.Every treatment was replicated six times.
Inverkan av transgena grundstammar på fruktkvaliteten hos icke-transgena äppelsorten ?Jonagold?
Gene technology has become more and more attractive in plant breeding during the last twenty years. This is probably because it can readily improve the existing commercial cultivars that have only one or a few drawbacks by modifying one or a few genes without changing the main genetic constitution. In this regard, gene technology is more effective than conventional breeding.The aim of this project was to analyze the fruit quality of the non-transgenic apple scion ?Jonagold? grafted on non-transgenic and rolB-transgenic apple rootstocks. The rootstocks used were M9-rolB1, M9-rolB2, M26-rolB and non-transgenic controls M9 and M26.
Granföryngring på tallmark, hur ofta förekommer det? :
This survey was made during the summer of 2004 and the spring of 2005, on commission
from the National Board of Forestry.
The aim of this report was to investigate how often Norway spruce (Picea abies L. Karst), is planted on poor Scotch pine (Pinus Silvestries) sites and if it affects the yield of Norway spruce? In order to investigate this, data from 29 stands witch had a lower site index than T24 was collected. The investigated stands were situated in the southern-eastern Sweden. In 20 plots in each stand, the highest tree, age, number of seedlings, site index and tree species per stand were measured.