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1483 Uppsatser om Water vapour transmission - Sida 65 av 99
Från frö till planta : En studie om hur elever i årskurs ett och fyra tänker om fröet och dess utveckling till planta
Abstract The aim of this study was to explore and describe the pupils' thoughts on seed and its development into seedling. Twenty nine Swedish pupils at the age of 7 and 10 years old were interviewed about their knowledge of seeds.It turned out that pupils often have so-called everyday belief to describe the natural science phenomenon by connecting their explanations to phenomena in everyday life to which they are familiar. To describe the process of seed developing into seedling is something that most of the pupils believe to be difficult and this resulted mostly in the answer ?it is growing.? Children have some knowledge about what seeds need in order to germinate but they do not mention the importance of oxygen as a component of seed to be able to germinate and grow. They mean instead that it is sufficient with soil, water and sun.The older pupils, however, are more often than the younger pupils able to connect their reflections to a more scientifically correct description based on terms belonging to the phenomena, though these terms sometimes are wrongly used.
Krögares förhållningssätt till berusningsdrickande
AbstraktÅberg, E. & Öhrn, L. (2008) Krögares förhållningssätt till berusningsdrickande. C-uppsats i pedagogik. Institution för pedagogik, didaktik och psykologi.
The vertical farm : varför har idén uppkommit och hur är den tänkt att fungera?
By immersion in the situation of the food production today and a historical study of how past development has led us to this point, one goal of this essay is to discuss whether the current way of farming can be applied in a sustainable future. Another objective of the essay is to study the vision Vertical farming as an alternative approach, and to focus on different aspects of this phenomenon in order to provide as comprehensive a picture as possible.The paper, thus, seeks to broaden the views for alternative approaches regarding a well-established method which we often take for granted. The aim is also to initiate a discussion around the need to also take radical ideas in regard if we want to face the future in a sustainable manner. The method is a qualitative literary study where scientific articles and papers have been used to discuss the issues: why has the idea of Vertical farming arisen, what is Vertical farming and how is the Vertical Farm meant to operate? Does Vertical farming have a place in the sustainable city of the future? For a long time us humans lived as one with nature, in a symbiotic relationship in which we gave and took as a functioning part of an ecosystem.
Biblioteksutvecklingen i Göteborgs södra skärgård, Styrsö folkbibliotek, 1943-1976
The purpose of this thesis is to describe and analyse the road towards a modern library in the southern archipelago of Gothenburg between the years 1943 and 1976. The archipelago consists of about thirty smaller and larger islands, of which seven are inhabited throughout the year. Styrsö and the surrounding islands composed a municipality of their own until 1973. In January 1974 it became a part of the municipality of Gothenburg, this is also the year when the only bridge in the archipelago was ready to be taken into use, between Donsö and Styrsö. There is no bridge between the mainland and the islands.
Kunskapsöverföring i mellankommunala projekt : Fallstudie av Kompetensare och Kompetensare 2.0
Företag och organisationer arbetar i dag i projekt. Att arbeta i projektform kan medföra både för- och nackdelar när det gäller kunskapsöverföring. Kunskapsöverföring är viktig eftersom den möjliggör för medarbetare att använda sig av gamla lösningar på nya problem. Syftet med uppsatsen är att titta på vilken kunskap som sprids och på vilket sätt det görs mellan ett mellankommunalt projekt Kompetensare 2.0 och dess föregångare Kompetensare. Kompetensare 2.0 är ett mellankommunalt projekt mellan 10 olika kommuner som ska implementera arbetssättet och arbetsmodellen från Kompetensare.
Morgondagens effektiva fjärrvärme : En beskrivande litteraturstudie
This report is made as a literature review, focusing on the work done to increase understanding of efficiency in the categories of substations and secondary heating systems, with respect to the deviation from the theoretically possible cooling off in the distribution network as well as the economic benefit that appear. The main purpose of a considerable part of the literature used in this report addresses the issue of identifying individual causes of reduced cooling in district heating systems. These literature resources have been compiled and summarized as part of the report.The technology of district heating is associated with benefits such as better use of the energy in a fuel. This is the case of cogeneration plants where serial generation of electricity and thermal energy increases efficiency compared with the parallel generation where heat is generated locally and electricity is generated centrally. Serial generation thus allows for lower primary energy demand.
Micro plastics in the oceans and their effect on the marine fauna
Small pieces of plastic, termed ?micro plastic? in the oceans derive mainly from degradation of big plastics such as beach littering, but also from sources of direct emission from e.g. beauty scrubbers and synthetic sand-blasting. These micro plastics are ingested by marine
animals ? mistaking them for plankton ? or via prey.
Planering och projektering för individuell mätning och debitering i flerbostadshus
The study aims to reduce energy consumption in apartment buildings where individual metering and charging of heat is applied. The aim is to develop planning and design for individual metering and charging in apartment buildings.The study is based on literature review, interviews and case study that include analysis of existing documents. Interviews were carried out with the property developer and the involved consultants who planned the apartment building Yasuragi. To investigate the differences the condominium association has noted in heat consumption between flats, the debit values of the heat were used to discern which houses that were furthest from the average consumption. On these flats there were temperature measurements and thermal photo shoots made for discriminating behavior and possible construction techniques which could be the explanation for the heat spread.Boverket shows that the consumption of heat can be reduced by 10-20% after insertion of individual metering and charging in an apartment block.
Comparison between different freezing and thawing methods for human spermatozoa
Preservation of cells and tissues by freezing at temperatures below 70°C has led to new possibilities for the storage of germ cells for fertility preservation. During the freezing process problems might occur, the greatest being ice crystallization which can cause membrane destruction and thus cell death. To minimize this risk, solutions that reduce the freezing point can be added to reduce crystallization and increase survival rates. These solutions are called cryoprotectants. The best method for freezing is still not known.The aim of this study was to analyze the effect of various parameters on the survival rate of human semen frozen with liquid nitrogen.
Vulkanisk svaveldimma : Risken att det drabbar Sverige
In the year 1783 a fissure eruption from Laki in the southern part of Iceland produced a large amount of volcanic gases during a period of eight months. The volcanic gases and aerosols spread across the northern hem sphere due to ideal weather conditions and had a substantial impact on the environment, human health and also climate effects. This, so called dry fog, caused severe health problems, which led to death casualties, killing animals, crops and other vegetation. The consequence was a widespread famine which was aggravated by a hard and long winter in 1783/84. Analysis shows that the Icelandic volcanoes are the primary risk to produce dry fog that can affect Sweden.
Hotell- Stockholms skärgård
The hotel is located on Skatholmen in the archipelago of Stockholm, Värmdö county. The hotel building has an open structure characterized by hospitality and the nature outside. The rooms have stunning views of the island landscape and lush forest. With biodiversity and valuable nature in mind, the building has been designed with a structure that should not be too intrusive in the surrounding landscape. The building is meant to blend into the dark silhouette of the island and to give a light footprint on the topography of the landscape.The use of well-chosen materials and similar design, both in plan and facade, creates a consistent building despite the building's somewhat playful expression.
Montering av isolering på vattentank
One of today problem at IVT industries would be assembly of insulation on water cisterns. The element of assembly insulation on the cistern gets too elevated; hence one has to climb onto the stand the cistern is assembly on. This will increase the risk of work related injuries when there is a risk of falling down. It?s also rather strenuous on shoulders due to work with your arms high above your head.
Effektiv materialstyrning i en försörjningskedja
Syftet med detta examensarbete är att analysera och utvärdera olika material styrningsmetoder inom tillverkningsindustrin för att få konkurrensfördelar. Scania som var uppdragsgivare ville att vi konkret skulle titta på vad som kan främja deras produktion. Scanias motorproduktion står inför en stor omläggning av materialstyrningsmetoder i och med att man ska bygga om och förbereder en ny produktionsanläggning i befintliga lokaler. Denna undersökning görs innan omställning av verkstaden, delvis för att kunna vara en jämförelsestudie efter att förändringen är slutfördArbetet har fortskridit i följande steg; först har vi sökt finna en problemformulering och en vetenskaplig grund att arbeta utifrån. Därefter har vi gjort en omfattande litteraturstudie som följts av en noggrann kartläggning av nuläget på Scania motorverkstad.
Solvärme med säsongslager i Lyckebo
The purpose of this thesis is to investigate and clarify the facts surrounding one of Vattenfall's district heating plants; The "solar field" and associated rock cavern in Lyckebo, Storvreta. The plant was built in the '80s by the formerly municipal utility,Uppsalakraftvärme AB, as an experimental building. A ground water filled cavern would serve as seasonal storage of solar heat from an adjacent solar field. Since both the energy company and the facility itself has undergone major changes over the past 30 years, there was a great need to gather facts in order to provide a picture of its current condition and potential for continued use. The thesis investigates the plant's history and problems with the rock cavern losses, and how the operation developed. It also presents the calculations regarding the possibilities of again supplementing the facility with solar energy - which is not the case today - as well as the economic conditions for it. Regarding a re-launch of solar energy, primarily a concentrating solar collector has been studied, as it has the advantages of an integrated control system.
Tritordeum : evaluation of a new food cereal
Tritordeum is the result of a cross between a wild barley (Hordeum chilense) and durum wheat (Triticum turgidum). Tritordeum have high viscosity and a nice yellow colour. The objective of this thesis was to evaluate Tritordeum lines HT 354, HT 361, HT 437, HT 2218 (JB3) and HT 1608 (JB1) for use as a new raw material within the food industry. Analyses made were on dietary fibre, fructan, ash, water content and colour. Compilation of data from analyses made for Agrasys an Agri-Food company in Barcelona having the commercial rights to Tritordeum, included Lutein and rheological properties.