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12348 Uppsatser om Alternative material - Sida 24 av 824

Urban vindkraft : Ett energialternativ för framtiden?

It is a well known archaeological concern that the remains of human bones left from the bronze age and early iron age Scandinavia are not nearly enough to represent the estimated population of the time. Furthermore the bones of each find rarely represent a whole individual. The majority of the bones must have been disposed of somewhere else, possibly scattered in running waters or in the fields, where they have evaporated or are securely hidden from archaeological excavations.This thesis deals with the grave concept and the problem in using a word that is so very clouded by its modern, western meaning. It also offers an alternative explanation to why the bones are handled the way they are and why they are found in such awkward contexts..

Planering av en jämställd fysisk miljö

It is a well known archaeological concern that the remains of human bones left from the bronze age and early iron age Scandinavia are not nearly enough to represent the estimated population of the time. Furthermore the bones of each find rarely represent a whole individual. The majority of the bones must have been disposed of somewhere else, possibly scattered in running waters or in the fields, where they have evaporated or are securely hidden from archaeological excavations.This thesis deals with the grave concept and the problem in using a word that is so very clouded by its modern, western meaning. It also offers an alternative explanation to why the bones are handled the way they are and why they are found in such awkward contexts..

Defuse : Fast och fo?ljsamt; en serie formexperiment

Uppsatsen är dels en skriftlig dokumentation av en konstnärlig process i sökande av design genom begreppen fast och följsamt samt gestaltandet, dokumenterat genom fotografi, av ett experimenterande av kontrasterande material. .

Optimering av driftläggningar i Fortums nät

Future emission legislation puts great emphasis on increasing the efficiency of the engine, thereby reducing fuel consumption. The tribological contact between cylinder liner and piston ring is where an great amount of energy is lost due to friction, and by reducing these losses an reduction in fuel consumption can be achieved.The aim of this thesis was to evaluate the tested piston ring coatings against a plasma sprayed cylinder liner and rank these combinations of materials for friction and wear resistance. The coatings that were tested was Cr + Al2O3, (Al,Cr)N, two types of CrN and WC / C.The experimental tests were performed with a so-called pin-plate, where used oil with addition of an acidic mixture of sulfuric and nitric acid to mimic the acidic condensate formed when exhausts recirculate, were added with a continuous flow. The results were then analyzed by weighing, studies by optical microscopy and scanning electron microscopy (SEM) and profile measurements.The results from each material combination were that the plasma coated cylinder liner wears too aggressively in order to yield a ranking of the piston ring coatings based on the parameters of friction and wear resistance. It is therefore proposed that an alternative coating on the cylinder liner should be developed, lacking the large abrasive wear on piston rings and that can withstand the corrosive environment resulting in engines equipped with EGR.

Pre-treatment of grain for ethanol production during storage

Ethanol for automotive purposes is an issue much debated and researchers disagree about the benefits of bioethanol. Converting energy-rich crops into ethanol suitable as motor fuel is a complex process and continuous development and improvements of processes and material used are important steps in the work of developing environmental friendly fuels. Grain is usually preserved by drying which consumes a lot of energy. Alternative storage of high-moisture grain in airtight storage systems reduce the energy required to produce bioethanol and studies have also shown that ethanol yields are increased more than 10% in ethanol fermentations of moist grain compared to dry. Airtight storage is often not perfectly airtight so biocontrol agents are necessary in order to preserve the grain.

LUSTFYLLD GEOMETRI FÖR 8-9-ÅRINGAR : - med hjälp av konkret material och vardagsnära matematik

Syftet med detta utvecklingsarbete är att utforma och utvärdera en lektionsserie för att se om det är möjligt att lära geometri med hjälp av konkret material och vardagsnära matematik, för elever i åldern 8-9-år. För att utforma och utvärdera utvecklingsarbetet har intervjuer använts som metod. I arbetet planerades och genomfördes fyra temadagar tillsammans med 13 elever där varje lektionstillfälle hade fokus på ett område inom geometri. Genomförandet visar att arbetet med konkret och vardagsnära matematik inte behöver vara invecklat utan är fullt av möjligheter. Intervjuerna visar också att det är lustfyllt för eleverna och de visar stort engagemang och intresse för uppgiften.

Keramik i bildämnet : En undersökning om lera som material i undervisningen för form

SammanfattningSyftet med uppsatsen har varit att söka reda på huruvida keramiklera används som material för undervisningen i formgivning i högstadie- och gymnasieskolan, varför eller varför inte materialet används samt att se på lärares inställningar till materialet. Metoden har varit en enkätundersökning bestående av frågor till högstadie- och gymnasielärare rörande olika aspekter vad gäller materialet keramiklera och lärarnas inställning till materialet. De svar enkätundersökningen gett visar på att keramiklera inte är vanligt förekommande i undervisningen för formgivning. Resultaten visar även att lärarna i brist på passande lokal, brännugn och tid väljer in andra material i sin undervisning som skulle kunna ersätta keramikleran..

En omöjlig Gud? : en jämförelse mellan gudsbilden i postmodern teologi och östkyrklig apofatisk teologi

In some postmodern philosophy and theology, the view of God has returned to the centre of the discussion. God is seen as a living reality beyond human conception. Some of the contemporary philosophers even relate to the negative or apofatic theology. They often do this as a contrast to the positive theology. The view of God in postmodern theology and philosophy is beyond our rational knowledge.

Behandling av konfliktbestånd - problem och möjligheter :

Overdue cleanings have for a long time been an important topic of discussion within the forestry sector. When stands that have not been pre-commercially thinned are reaching the level of commercial thinning, many problems occur in terms of decision-making and economical outcomes. These types of stands are commonly known as conflict-stands. The work was carried out partly as an interview survey towards representatives from the forest sector and the energy sector, partly as a case study of conflict-stands situated in Böksholm, north of Växjö and in Tönnersjö east of Halmstad. The criteria for the studied stands were that they had to be dominated by Norway spruce and be in a severe status of ?conflict?. The aim of the interview was to get an overview of the situation today, and also analyse trends in terms of conflict stands.

Landsbygdens återkomst - mångsysslare i ny produktion : Löderup och Valleberga socknar om 10 till 15 år

The essay on ?The revival of the countryside ? a multitalent in landproduction.? focuses on local and regional development within agriculture, foodprocessing and tourism.Due to great changes in society, the inhabitants in rural areas are forced to find alternative occupations. Using history as a tool to build up the future is a main factor in rural development. Apart from this it involves cooperation, resources, cultural heritage and values, entrepreneurship and innovation, economic vitality, and an understanding of markets and marketing. They all contribute to a region`s ability to benefit from rural development..

Intervention med tecken som alternativ och kompletterande kommunikation på en daglig verksamhet : Teckenanvändande av brukare med Downs syndrom och personal

Manual signs are an augmentative and alternative communication mode which enables and facilitates communication for persons with impairments in speech, language and hearing. There are different ways of teaching signs to persons with intellectual disabilities. One of them is milieu teaching, which is a method where the teaching takes place in natural settings. This method has proven to give good results in generalization and maintenance. Teaching signs to staff in groups has been shown to be effective.

Matte painting with fysical models

Denna rapport handlar om hur man jobbar med en matte painting, och utgår ifrån bristfälligt material som inte är skapat för ändamålet, och med detta material ändå skapar en matte painting efter ad`s (art director)önskemål..

Konstnärligt inslag i planeringsprocessen : kreativitet i aktörers dialog

It is a well known archaeological concern that the remains of human bones left from the bronze age and early iron age Scandinavia are not nearly enough to represent the estimated population of the time. Furthermore the bones of each find rarely represent a whole individual. The majority of the bones must have been disposed of somewhere else, possibly scattered in running waters or in the fields, where they have evaporated or are securely hidden from archaeological excavations.This thesis deals with the grave concept and the problem in using a word that is so very clouded by its modern, western meaning. It also offers an alternative explanation to why the bones are handled the way they are and why they are found in such awkward contexts..

Vindkraft eller kärnkraft - En jämförelse

The scope of this project is to make a comparison of costs associated with wind and nuclear power in order to decide which one of these is the most suitable in the case of an increased demand for electricity. It is also investigated if there are other factors that can influence the choice of energy source.An average cost is calculated in terms of kronor per kilowatt-hour (SEK/kWh) using cost of investment, operation & maintenance and taxes & subsidies. Total investment cost is recalculated to production cost using the annuity method at three different interest rates (6%, 9% and 12%).The comparison is made between three cases of wind power and two cases of nuclear power. For wind power there are two ocean-based (300MW and 100MW installed capacity, respectively) and one land-based (60MW) wind farm. For nuclear power there is one EPR-reactor (1600MW) and one AP1000-reactor (1100MW).

Eftermarknadens möjligheter : En studie av Swecon AB:s tjänsteutbud

ProblemThe manufacturing industry is a mature industry where the profit margins are small and the competition is hard. This makes it hard for both manufacturers and resellers to gain market shares and reach reasonable profit margins only by selling products. Therefore Swecon who is reseller for Volvo Construction Equipment tries to find alternative methods and ways to increase their profit. An alternative source of income could be to develop the range of services that are connected to the ground products.PurposeThe purpose of the thesis is to examine how Swecon in southern Sweden can improve their offers of existing services connected to the ground product and investigate the demand of new such services.MethodThis study is based on a qualitative study of five of Swecons local offices and five of Swecons customers. The empirical framework is mostly based on personal interviews but in some cases information was retrieved by using phone interviews.

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