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1386 Uppsatser om Storm water drain - Sida 45 av 93
Vattentäta och ?andande? textilier
Rapporten innefattar en jämförande studie mellan olika typer av membran och beläggningar.Främst sker en jämförelse mellan materialens förmåga att andas. Vattentäthet testas på nyamaterial och efter olika sorters nötning så som martindale, flexing och tvätt för att få en ökadförståelse för materialen. Verktyget som används i studien för att mätaånggenomsläppligheten är hudmodellen. Resultatet presenteras med ett Ret-värde vilket är enförkortning på Evaporative resistance of a textile. Metoden används för att på ett bra sättsimulera hur huden svettas.Projektet har utförts på Swerea IVF som är ett forskningsinstitut beläget i Mölndal.Hudmodellen är en av de senaste stora investeringarna på Swereas textil och plast avdelning.Resultatet av studien visar att laminat andas bättre än beläggningar, dock har bärarmaterialetstor inverkan på resultaten.
Fågel fisk eller mittemellan?
The project is a thesis which intends to strengthen the form language and increase the user friendliness of an International Moth. This is a single handed dinghy with only one sail. It sails on two hydrofoils and receives a very high speed compared to its size, and are therefore often referred to as ?the Formula One on water ?. The result is a new concept where the aerodynamic forces have been used to stabilize the boat and relieve the hydrofoils.
Okontrollerad storm eller lugn bris? - En komparativ studie av anställdas känslomässiga reaktioner i en tvingande och en frivillig organisationsförändring
Organisationer förändras ständigt och måste anpassa sig till sin omgivning. Orsakerna till förändringar beror delvis på organisationernas egna frivilliga beslut men även externa påtryckningar, till exempel på grund av lagar och direktiv. Hur anställda uppfattar och reagerar på förändringar påverkar hur effektivt förändringarna implementeras. Därför är det nödvändigt för företaget att göra vad de kan för att anställda ska acceptera förändringen.Denna studie undersöker hur anställda reagerar vid organisationsförändringar. Syftet är att redogöra för hur och varför anställda reagerar i olika typer av organisationsförändringar.
Does tree removal along railroads in Sweden influence the risk of train accidents with moose and roe deer?
After the storm Gudrun in 2005, the Swedish Transport Administration started clear-cutting of railroad corridors to reduce the risk of trees falling down on the tracks. Simultaneously, train accidents with moose and roe deer have become more frequent and the costs for consequent delays and repairs of engines are of growing concern. There is reason to assume that tree-clearance of railroad corridors may have contributed to an increase in number of accidents with moose and roe deer because the cleared areas provide attractive forage and thus may attract wildlife. The objective of my study was to investigate how clearing of trees affected the number of accidents with moose and roe deer. I compared deer-train collision frequencies before and after clearance of the selected railroads and compared these with uncleared control railroads in a BACI (before-after control-impact) approach.
Kriget om lärandet - En studie om datorspel och lärande, och vilka aspekter som är viktiga för pedagoger att titta på
Det har gjorts mycket forskning på pedagogiska datorspel och hur de kan användas i undervisning.Den här studien har försökt sammanfatta och sammanställa detta till en modell för hur datorspelkan utforskas och analyseras anpassat till verksamheten. Syftet med studien är således: Attutmejsla ett ramverk för pedagoger för högre åldrar, som kan hjälpa till att avgöra hur bra olikadatorspel (underhållningsspel och pedagogiska spel) skulle kunna fungera i verksamheten.Två strategispel med inriktning mot historia har analyserats, Age of Empires 3 och MakingHistory: The Calm and the Storm. Spelen har spelats och sedan analyserats utifrån RETAINmodellen.De har därefters spelats av fyra elever som har observerats, vilket har gett insyn i vilkaaspekter som är viktiga att titta på som pedagog vid analys av datorspel.Resultatet mynnar ut i ett antal olika kategorier och frågor som kan hjälpa till vid analys av ettdatorspel som ev. kan användas i undervisning. Vad spelet har för fokus, lärande ellerunderhållning? Vad spelet har för relevans till undervisningen? Hur har det akademiska materialetinkorporerats i spelet? I vilken kontext ska spelet spelas? Hur ska man tillämpa de kunskaper somspelet ger? Kan spelet verka motiverande och hur mycket tid och resurser måste läggas på spelet isin helhet? Detta ramverk är förhoppningsvis så pass konkreta och lättförståeliga att de kananvändas av en pedagog i verksamhet för att avgöra hur bra ett datorspel kan inkorporeras i enverksamhet..
Barns föreställningar om de första djuren som utvecklades på jorden
No previous studies have been conducted on elementary school in Sweden about children`s thoughts about the first animals on earth. The work takes up the children`s ideas of the first animals and the difference between girls and boys knowledge. The purpose of this work was to determine if student`s views are consistent with the science know today. In the interview, five girls and five boys participated. Mankind is asking where it all began, today we know that the first life arose for 4 billion years ago and it was from the water.
Klibbalens gödslingseffekt på volymproduktionen i ett blandbestånd av gran och klibbal : en simulering i Heureka
A secondary and a pioneer tree species can with advantage be included in a mixed stand to increase the use of sunlight. Nitrogen-fixing plants have been shown to increase the supply of nitrogen in the soil by, for example, litter fall. This deposition acts as a biological fertilization, which may be used by non-fixing plants. Alder is a nitrogen-fixing, pioneer tree species that loses its nitrogen-rich leaves late in the autumn. The aim of this study was to examine the effect on the total volume of production, when different proportions of nitrogen-fixing Alder were part of spruce stands.
Utveckling av en LC-MS-metod för analys av gamma-hydroxibutyrat, gamma-butyrolakton, 1,4-butandiol, amfetamin och metadon
In this project a LC-MS-method for the analysis of gamma-hydroxybutyrate, gamma-butyrolactone, 1,4-butanediol, amphetamine and methadone was developed.Initially, the efficiency of the ionisation of the analytes was evaluated with respect to the ionisation technique (ESI, APCI and APPI) and the composition of the mobile phase. In the next step a number of different columns was tested in order to find the one with the greatest potential for separation of the substances in question. Using the selected column, the separation was optimised by means of experimental design and the software The Unscrambler 7.8. The parameters studied were the flow rate, the column temperature and the mobile phase composition. The response variables were the resolution between the target compounds and the retention time of the last eluting compound.These experiments showed that, in order to obtain the best ionisation, the mobile phase should consist of 5 mM formic acid in water and acetonitrile.
VäxtVäktare
Most people have been forced to throw away a pot-plant after its death. There are many reasons to the death of a plant, but mainly it?s because its owner forgets it, and therefore fails to water it.
The purpose of this project is therefore to develop a product which can prevent this from happening, while the product has to have a low manufacturing cost to be able to compete whit other, similar, products on the market.
During the project, a benchmarking has been done to give a clear picture of what the product has to compete with. The directives there are for CE-marking, and which of these who concerns the product has also been looked up.
Kalkning och vitaliseringsgödsling : synpunkter från organisationer och myndigheter samtprivata markägare i Kronobergs län
The background for this thesis is that at the beginnings of 1980´s the National Board of Forest started an experiment of lime dressing to reduce acidification in forest soil and in ground water. The purposes of this report are to explain organization?s, government?s and private landowners viewpoint on lime dressing and vitalization fertilization, some socio-economic aspects are presented. The general conclusions are that the majority of the interested party?s are positive to vitalization fertilization but the forests owner?s in generally need much more information about this topic..
Vattenhaltmätning i konfektyr och sylt med Karl Fishermetoden
Abstract (in English)The task for the diploma work was to develop methods for measuring of moisture content by the Karl Fischer method, in jam, jelly sweets, and fudge.The start premises was a for the company whole new equipment, which should be started up. Then programs should be developed for different kind of samples.In the task it was as well included to develop methods for dissolving the different kind of samples, since the Karl Fischer method demands completely dissolved sample material..
Idéanalys av Centerpartiets partiideologi 2001-2013 : Är det medlemmar eller väljare som bestämmer Centerpartiets ideologi?
AbstractWhen the Swedish Centre Party, Centerpartiet, just before Christmas 2012 released a draft for new program of ideas a powerful "winter storm" broke out. Ideas that Centerpartiet would abolish compulsory schooling and the right to inheritance and allow polygamy are just a few of the things that cause alarm.It's not the first time during the last years the Centre Party is associated with neo-liberal elements in their party?s ideology. In 2007 Erik Ullenhag criticized Centerpartiet for their new neo-liberalism was a danger to the alliance.The aim of this study is to investigate whether it is possible to see a change in Centerpartiets ideology and how deep it is. From an idea analytical approach based on ideal types, created for social liberalism, neoliberalism and ecohumanism, the party programs from 2001 and 2013 are studied.
Mjölksyrabakterier som tillsatser vid ensilering av majs :
The project was initiated by Medipharm which produce microbial inoculants which used
as additives to preserve forage. The main goal was to test three inoculants to produce
maize silege. The following Medipharm produced inoculants were tested, Milab 393,
Lactisil Wolecrop II, Lactisil 300 2. An untreated control was included in the study. The
trial was done at Swedish university of Agriculture and Science in Alnarp, Sweden.
Eurostar was the cultivar of the maize and was grown on 20, 5 hectares.
Vindfällning i naturliga och skapade bryn och kanter :
The aim of this work was to study if the edge of the forest is more resistant to heavy winds than the trees located further in from the edge, and how this edge effect changes between different types of tree species and site types.
The data was collected from an electric power line going from the north to the south of
Sweden. The mean value of the clearcutted area around the power line was 120 meters. The
main direction of the storm in January 2005 was west-southwest and thus the power line was a perfect place for gathering a large data set.
The main parameter studied was the damage frequency at the edge of the forest compared to
the trees located further in from the edge (up to 100 m from the power line). Tree species mixture, soil moisture class, soil type, topography, stand height, stand height of the stand on the other side of the power line and wind exposition was estimated.
The results showed a distinct edge effect. The edge of the forest had clearly lower damage frequency for all tree species.
A marked difference was observed between tree species and damage frequency.
Möjligheternas skog : utveckling av Teleborgsskogen som tätortsnära rekreationsskog i samarbete med närboende och aktörer
The Swedish forestry aims primarily maximize production and economical wins. However, especially urban forests have great qualities as space for recreation and children?s play, which means that other goals should lead the forests management. The Teleborg forest is a wooded area in Växjö, surrounded by urban dwellings, schools, nurseries etc. A great part of the forest was wind felled during the storm Gudrun in 2005 which changed the forest, earlier dominated by spruce, dramatically.