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4514 Uppsatser om Flow problems - Sida 46 av 301

Förstudie till våtmark i Rimbo : Design för optimal hydrologi och kväverening

The euthropthication of the Baltic Sea is a threat that is beginning to be taken seriously by the governments concerned. In Sweden, regulations concerning the allowed nitrogen (N) concentration in the effluent water from wastewater treatment plants are being tightened up. The Rimbo wastewater treatment plant has been imposed to reduce the annual mean concentration of total N in the effluent water to levels below 15 mg l-1. A more and more common way to reduce the nitrogen level in wastewater is to let the water pass through a wetland. This study investigates the possibility to build this kind of wetland at the outlet of the Rimbo wastewater treatment plant.A prestudy of the topography, soil characteristics and groundwater flow indicates that the land area in question is well suited for the construction of a wetland.

Motorcykelhjälm : Underlätta avtagandet efter en olycka

In my degree project I have focused on how to make it easier for ambulance personnel to remove a motorcycle helmet after an accident. During my research I have interviewed ambulance personnel from different cities and a trauma surgeon to get a better understanding of how they work today and the problems they experience. Some of the problem areas are that you need a lot of force to remove the helmet, that the padding catches the ears and that the chin guard catches the face. Since ambulance personnel always assume that there is a neck injury after an accident, all these problems make it difficult to remove the helmet safely.The result is a motorcycle helmet with a focus on safe removal after an accident, to reduce the risk of worsening a neck injury. The solution suggested is that a small part of the back of the helmet is detachable, to make the opening larger.

Kreativa aktiviteters betydelse för äldre personers hälsa och välbefinnande : En systematisk litteraturstudie

Bakgrund: Kreativa aktiviteter har funnits inom arbetsterapin genom yrkets hela historia. Att vara aktiv är ett grundläggande behov hos människan. Aktivitet används både som mål och medel inom arbetsterapi för att främja personers hälsa och välbefinnande. Syfte: Att beskriva betydelsen av deltagande i kreativa aktiviteter, inom arbetsterapi eller på egen hand, för äldre personers hälsa och välbefinnande. Metod: Uppsatsen är genomförd som en systematisk litteraturstudie.

Bevattning av lagrat virke vid svensk skogsindustri : omfattning och miljökonsekvenser

Most of the saw and pulp industries have stored wood nearby their production, the main reason is to have a continuous wood flow to the production. Wet storage of wood is of great importance to keep the wood quality. Without water sprinkling the risk of drying outand decomposition through biological activity increases significantly and will result in a negative effect on future production and quality. One drawback of wet storage of wood is the leaching of chemical substances into the surrounding recipient. The log yard run-off contains phosphorus, nitrogen, phenols and organic substances. These substances can cause problems for the surrounding environment. The main objective of this project is to gain an understanding of the wet storage used by the Swedish wood industry and estimate the environmental consequences that run-off water will have on the recipient.

?Innanfo?r hemmets va?ggar? : En kvalitativ studie om bista?ndshandla?ggares erfarenheter och uppfattningar kring a?ldre personer med problematiskt fo?rha?llande till alkohol

This study is qualitative and aims to describe and analyze how senior citizens with alcohol- related problems are recognized by social workers within local care for the elderly. The empirical material consists of eleven semi-structured interviews which was completed with the help of social workers within local elderly care. The findings of the study shows that the processing of the senior citizens alcohol related problem can be explained as an identified ?awareness process.? Further, the findings of the study shows that awareness is often made by others than the social workers themselves. The study has also showed that known versus unknown information about present alcohol-related problems, tends to be crucial for when and how awareness is made in the ?awareness process?. .

CFD simulering av en fyrtakts Otto motorcykel motor

This thesis deals with the numerical 3D simulation of a four stroke, spark-ignited, internalcombustion engine, which is mounted on a high performance motorcycle. The work, carried outin collaboration with Politecnico di Milano and MV Agusta, focuses on the simulation of theintake, compression and expansion stroke, including combustion simulation, using an opensource CFD code.Simulation of internal combustion engines offers a great challenge in the field of CFD research.Moving boundaries of the solution domain, caused by the motion of the piston and valves, leadsto deformation of the computational grid, with decreasing quality of the solution as result. Basedon this, a previously developed mesh motion strategy was employed where a number of meshesare used to cover the whole simulation cycle. Within each mesh interval the internal cell pointsof the mesh are moved to account for the boundary motion of the piston and valves. This strategywas previously applied to simplified geometries as well as real engine geometries.

Sambandet mellan opredicerbara föräldrar och förekomsten av interna och externa beteendeproblem hos ungdomar

Syftet med denna studie är att undersöka om det finns ett samband mellan opredicerbara föräldrar och förekomsten av både interna och externa beteendeproblem hos ungdomar. I studien undersöks interna beteendeproblem såsom låg självkänsla och depression samt de externa beteendeproblemen brottslighet och aggression. Studien baseras på 1018 ungdomar i åldrarna 13- 15 år. Studien utgår från en enkätundersökning där fem olika skalor används för att mäta ungdomarnas självkänsla, depression, brottslighet och aggression samt hur konsekventa deras föräldrar är. Resultaten visar i allt väsentligt att de ungdomar som har både interna och externa beteendeproblem är de som rapporterar högst i opredicerbarhet hos sina föräldrar..

Klassning av fjällbjörkskog enligt FAO:s definition av skogsmark med hjälp av flygburen laserskanning

Sweden?s forestry legislation was updated in 2010 and a new definition of forest land was introduced. This definition was adapted to the one used by the Food and Agriculture Organization of the United Nations (FAO) for international statistics on the state of the world's forests. It is in short based on the lands ability to grow forest that reaches 5 meters, 10 % canopy closure and has a continuous distribution, according to FAO at least 0.5 hectares. A country-wide laser scanning is now carried out for the production of a new national elevation model; the laser data also provides information on forest height and density.

Inomhusmiljöproblem i fuktiga byggnader : En utredning av åtgärder vid fuktrelaterade inomhusmiljöproblem

Dampness in the indoor environment have been a major issue of discussion the last decades since more and more people complain about their indoor environment. In the present situation there are difficulties to find what causes people?s discomfort in a damp environment even though there is a strong connection between dampness and human health.The aim of the thesis was to contribute to the work done today to achieve a better indoor environment in damp buildings. The purpose of the work was to evaluate whether the measures issued for dampness in the indoor environment contributes to the improvement of health and environment for those who are living or working in that space. Through a literature review, interview and survey the following three questions were answered to achieve the aim and purpose:How are people affected by the indoor environment in damp buildings?Which are the measures issued to prevent dampness in the indoor environment?Do these interventions contribute to a better indoor environment?How people are affected by the indoor environment in damp buildings and how these problems are prevented were the foundation for the continued work with the survey.

Unga idrottares upplevelser granskat genom flow-teorin

Skolan har fått i uppdrag att implementera hållbar utveckling i undervisningen. Enligt skolverket ska hållbar utveckling genomsyra all utbildning. För att undersöka hur lärande i hållbar utveckling har implementerats i undervisningen intervjuade jag sex lärare på en gymnasieskola. Lärarna som intervjuades arbetade som naturkunskapslärare, fysiklärare och samhällskunskaps-lärare. Studien visar att de intervjuade lärarnas syn på vad hållbar utveckling i undervisningen innebär varierar.

Mervärdesbeskattning av elektroniska tjänster : Är beskattningen förenlig med neutralitetsprincipen?

AbstractValue Added Tax, VAT, is a general consumption tax that is added to almost all consumption of goods and services. Despite the extensive work of harmonization of the VAT system relating to electronic services, it can be difficulties in determining the taxable land, something that could affect the internal market in a negative way. The Swedish companyStardollABwas double taxed on certain electronic services that they provided consumers in theUK. The problems that lead to double taxation must be identified to ensure free competition and free movement within the internal market. The principle of neutrality pervades the whole of the EU VAT system which can be derived from principles of the Treaty, establishing the common market, and the introduction of the VAT Directive.

Likviditetsförbättring i Skanska Direkt. En fallstudie i en byggserviceverksamhet.

SUMMARYInventory of raw materials holds an important role in companies within the manufacturingsector. The inventory works as a buffer that secure the supply of materials to the productionunit. The aim of the inventory is to ensure that the company is able to meet the customers?demands despite fluctuations and variations in the material flow. The size of the warehouseand the layout are physical limitations for the quantity of articles that can be stored.

Den ständigt avvikande förorten : Medias diskriminering av förorten Andersberg

The emerging Swedish suburbs of the 1960- 1970s started out as a utopian vision: a new city for the modern people. Media presented a different view and emphasized the inhuman livingenvironment and the social problems of the suburbs. Nationwide there have been local attempts to avoid this negative publicity by adjusting identified suburban problems. Due to medial presentation the suburbs are still associated with segregation, criminality and social problems. The presentation of suburbs and immigrants affects not only the process of integration and the general public idea of integration processes, but also the individual perception of themselves and their living.

Från miljöbistånd till hållbart bistånd : - En historisk studie

AbstractWith this c-composition, I am trying to give a view over what has happened in the political area and the issues that concerns environmental aid. My analyze starts in the 60-ies when the environmental debate took of. It continues trough the 70-ies, 80-ies and ends in 1994 with the report that considers the UN-conference in Rio de Janeiro 1992, ?Sustainable Aid? and what the results of the more and more important issue ?sustainable development? has offered the Swedish government ant there work with environmental aid.The question issue is: At what time in history, did the Swedisch government start to addrsess environmental aid? How did the environmental aid come to be addressed and developed in the political area from the Brundtlandreport ?Our common future? from 1987 to the UN-conference in Rio de Janeiro 1992?The result is that the environment is getting more and more important in the political arena as the knowledge about the escalating crises with the environmental problems are being taken more seriously. The problems with the environment has to be considered together with the rest of the aid- and developing questions like economy and the struggle to reduce poverty in the world.

Valutasäkring inom medicintekniska företag

Title: The appraiser?s choice of valuation method ? factors that influences the choice of company valuation methodsSeminar date: 04/06/07Course: Master thesis in Business Administration, 10 Swedish credits.Authors: Anne Benedicks and Veronica ÖbergAdvisor: Eron OxingProfession of category: Financial analysts, auditors and company lawyers.Key words: Company valuation, valuation methods, cash flow analysis, comparative valuation, the net asset value method.The Main Issue: What is of decisive importance when choosing a special company valuation method?Purpose: The purpose of this paper is to identify, analyse and evaluate the most common methods of valuation for financial analysts, auditors and company lawyers and those factors that influences the choice of method.Method: A multiple survey has been implemented for the actual profession categories. Primary data was collected through semi-structured interviews and a questionnaire survey.Theoretical: The theoretical frame of reference is based upon the paper?s dependent variable, i.e. the role of the appraiser.

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