The majority of all power cuts that affects individuals and communities are caused by earth faults on the power transmission lines at 10kV and 20kV level [1]. If these power cuts could be eliminated, less disturbances and interrupts would lead to large amounts of money savings.Swedish Neutral has developed such a protection system. When an earth fault occurs power is injected into the neutral point of the transformer. The RCC (Residual Current Compensation) protection calculates a compensation current exactly 180 degrees out of phase to the fault current. Doing this, the voltage at the fault location becomes very close to zero, without affecting the power transmission.The protection system can only compensate automatically for the fundamental frequency (50Hz), and manually for the 3rd, 5th, 7th and 9th harmonics.

This thesis describes the processes of establishing wind farms in Sweden. The workcontains a thorough literature review regarding both the establishing process andproject management, including complex project theory. The main part consists of theexecution of 15 interviews with organizations involved in wind farm establishment.The result of these interviews laid the foundation for a process description identifyingdifferent steps and activities in these types of projects. The outcome was thencompiled in a project model, which includes five phases and four processes.When analyzing the project of establishing wind farms from the theory of complexprojects one discovers that the amount of different requirements and stakeholdersnecessitates a systematical and dynamical project structure. Since projects are in needof different types of competences there are also many consultants and contractorsinvolved.

The Swedish stock-market gives investors an opportunity to benefit from the global growth while financing companies invests and contributes to a socio-economic development. Parallel to the ownership of the funds also follows a responsibility as companies in the funds affect society and the environment. The growth of savings in funds, combined with an increased focus on sustainability has developed SRI (socially responsible investment). Therefore it is interesting to examine whether responsibility is an exception, which only concerns SRI-funds or a general principle, which includes the whole Swedish stock-market.The results of the survey makes it clear that all the Swedish major banks actively works to integrate sustainability within the respective bank's business to achieve a more sustainable financial system. Thus concludes the investigation that responsible investments are a general principle on the Swedish mutual stock-market.How responsibility is integrated in fund management differ between the banks.

This study was done regarding whether sealing or ventilation is the best solution to prevent moisture on cold attics. The authors of this report addressed the problem with moisture in attics when they started their cooperation with Peab.The methods included interviews with people, database research, and calculations of a project in Akersberga north of Stockholm. The conclusion is based on interviews and other information as they are analyzed in relation to the house of reference. The focus of this report is on problems with moisture in the attics known as cold attics.The background of the problem with moisture is that today?s slabs are usually insulated to save energy and that the attics nearly gives the climate as the outdoor climate.

Environmental problems are accelerating with energy consumption and the release of greenhouse gases as the major issues. This affects landscape planning mostly through environmentally hazardous transportation and heating of buildings. In environmental work, the term "Sustainable development" is often used. This term was coined in the Bruntland report in 1987. A number of frameworks have been developed to clarify the term and to remind the user about relevant aspects of sustainability.

This essay is about how the company management should prepare to avoid BOHICA syndrome to develop from a reorganisation. BOHICA syndrome is a cynical attitude, acquired by recurrent disappointments from, for example reorganisations. If the company management is attentive and identifies and addresses such disappointments, BOHICA syndrome can prohibit the possibilities in future to work efficiently and profitably in the company. BOHICA syndrome are thus by extension a threat to the company?s survival.

The dog is unique in the way that the adult weight can vary 100 folds between the different breeds. Despite this, most of the breeds reach adult size before two years of age. For the large-breed dogs this means a very rapid growth when some of them can have a weight gain of up to 150 times their birth weight. The most rapid growth occurs when the puppies are between three to six months old and that kind of rapid growth during such a short period of time makes these large-breed puppies very sensitive to deficits and excesses of energy, nutrients and minerals. Some examples can be excess of energy, excess or deficit of minerals such as calcium and phosphorus or deficits of protein. The rapid growth can also make the large-breed puppies predisposed to some diseases affecting the skeletal and joints.

The development within the textile industry is always ongoing with development of new andbetter textiles, which often mean the use of non-natural materials like polyester. This doesn?t lineup with the work shared around the world against an improved environment, so the idea came touse a form of linen fibers instead of polyester as the reinforcing material together with cotton.The idea was to use flax, linen of low quality, which is seen as a waste product and garbage inthe production of high quality linen and flax seed oil. This flax of low quality needs to beseparated before it can be used in cotton spinning machines. Fireball 2 is just that, a process toseparate flax fibers through the treatment of a technique called electrohydraulic discharge.The thesis works goal is to evaluate the Fireball 2 process ability to separate flax fiber.

Det finns stora besparingsmöjligheter i byggbranschen genom effektivare kommunikation och planering. Examensarbetet har genomförts på tre av Q-gruppens byggarbetsplatser i Stockholmsområdet. En ombyggnation/ nyproduktion av lägenheter och lokaler i Saltsjöbaden, en nyproduktion av lägenheter och förskola på Södermalm samt en ombyggnation av lokaler i Folksamhuset på Södermalm. Kvalitativa intervjuer, deltagande observationer och en omarbetning av en befintlig Gantt tidplan till en LoB (Line of Balance) tidplan visar hur situationen med kommunikation och planering i byggbranschen upplevs av platsledning och yrkesarbetare samt hur det kan förbättras.Examensarbetet omfattar två delar där kommunikation mellan platsledning och yrkesarbetare på byggarbetsplatsen är den ena och användning av LoB planering är den andra.Examensarbetet visar att de som arbetar i produktionen gärna ser en kombination av planeringsmetoderna Gantt och LoB. Samtliga intervjuade är överens om att en väl fungerande kommunikation och planering är väsentligt för att projekt ska fortlöpa smidigt.

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.

The purpose of this master?s thesis is to investigate children?s access to specific children?s activities at Swedish public libraries 2005. The thesis is based on literature studies and qualitative interviews with children?s librarians, library directors and local politicians at two demographically different libraries in Gothenburg.The sub questions are: What measures exist to promote children?s access to public libraries and children?s activities when it comes to: law and other political statements: different efforts on the state level and different efforts on the municipal level in the direct activity with children at public libraries? What driving forces and needs justify activities for children at public libraries? How will the responsible persons judge that the efforts are sufficient? The result of the study shows that children?s access to library activity has increased in the last couple of years due to reorganization, economic savings with closing down of library affiliates and because libraries have given priority to other things, like IT and new media. Children?s librarians have got new assignments and less time for children?s activity.The conclusion of our investigation is that children?s librarians are ambitious in their work, but unfortunately don?t give children?s library activity adequate resources.

This study was carried out at the request of the bio energy company Naturbränsle. The company handles annually 750 000 m3 of chips from logging residues from a large area, from Östergötland in the south to Härjedalen in the north. In that area, about 50 bio fuel plants are customers. When Naturbränsle deliver chips from logging residues to their customers, the moisture content varies from 30 % to 60 %. The aim of the study was to sort out the affecting factors on the moisture content in the chips during handling and storage processes.

In this thesis a number of energy saving methods for a multiplier on algorithmic level are investigated. For the investigation a multiplier is constructed in VHDL, after which the circuit's performance is investigated. A number of techniques for reduced power consumption are introduced in the circuit and are then evaluated. The conclusions are that all investigated methods, pipelining, interleaving and voltage scaling, should be maximally made use of in order to minimize the power consumption..

Europaparlamentet antog i december 2002 ett direktiv om byggnaders energiprestanda.Direktivet kräver att byggnader skall energideklareras, alltså undersökas och dokumenteras urett energiprestandaperspektiv. Direktivet har hittills resulterat i två svenska delbetänkandensamt ett slutbetänkande. Dessa tre skrifter kommer att ligga till grund för den svenska lagenom energideklarationer. Enligt SOU 2005:67 skall energiprestandan beräknas för samtligasmåhus och nybyggda hus. För flerbostadshus och byggnader med lokaler skallenergiprestandan beräknas då det inte finns några uppgifter på byggnadens energianvändning.Eftersom byggnaders energiprestanda är en central del av energideklarationerna ägnas det enutförlig analys av olika energiflöden ut ur och in i en byggnad.

Detta examensarbete har genomförts i samarbete med Värmex AB där vi har haft Anders Ericsson som handledare, och Peter Hansson (Sweco) som handledare från skolan, Kungliga tekniska högskolan i Haninge.Idag är energianvändningen i flerbostadshus en stor fråga att ta itu med, och för varje byggnadsprojekt skall en energideklaration som visar mängd köpt energi göras. Vi strävar idag efter att minska energianvändningen i flerbostadshus med 50 % till 2050. I denna analys beskriver vi vilka åtgärder man kan ta an för att minska just energianvändningen i ett specifikt flerbostadshus belägen i kommunen Nacka i Stockholm.Då denna byggnad stått från år 1949 utan större underhållning har det visat sig att byggnaden står över BBRs krav gällande energianvändning (90 kWh/m2), och stor anledning är klimatskalet. Källor visar även att delar av klimatskalet så som fasad etc. bör ändras inom 30 år efter det att det byggts, vilket inte har gjorts.Vi har genom en programvara, VIP-Energy valt att utföra denna analys.