Sök:

Sökresultat:

935 Uppsatser om Directional earth-fault protection - Sida 38 av 63

Klimatförändringars påverkan på kulturmiljöer i Uppsala stad ur ett geovetenskapligt perspektiv

Cultural heritages are environments created by humans that are considered to have a conservation value for the posterity. They can be seen as one of society's non renewable resources. It is important to have knowledge of how cultural heritages are affected by future climate changes.The water flow in Uppsala is estimated to increase during winter and decrease during spring and summer. Precipitation will gradually increase as well as the intense short period precipitation. The average temperature is estimated to increase as well.

Ställtidsreduktion i montering av kopplingar

VBG Produkter AB is a process-orientated company that develops, manufactures and markets trailer couplings with belonging coupling equipment, protection equipment against skidding and stands for wagon-bridge for heavy vehicles. The company feels that their set-up time in production for couplings is not at an acceptable level. Due to high demands of customer oriented production the intermediate stock level of included products within the assembly of couplings has gradually increased which has resulted in high inventory holding costs. VBG Produkter applies Kanban in their production, therefore it is important to produce exactly the necessary amount and avoid overproduction. The objective of this project is to suggest appropriate solutions so that VBG Produkter is able to reduce their set-up time in assembly of couplings, by identifying internal and external set-up time for the chosen process bushing cell.

Hot och risker med dricksvattenförsörjning : Förutsättningari tid och rum för bevarande av Sundsvalls och Timrås dricksvattenförsörjning

This study describes what impact activity within Wifstas, Matfors,Grönstas and Nolbys water protection areas have on the quality of the drinkingwater. It considers the use of the area, environmentally dangerous activitiesin the past and present, the geology?s part, what harm hydroelectric power damsmay cause if they break and how climate change might affect the area in thefuture. It also takes into consideration activities outside the waterprotection areas which might have a suspected impact on the water quality. Theresults of the study are that pollution from infrastructure such as roads, orwastewater from treatment plants may cause occasional contamination of thedrinking water, foremost due to flooding.

Förutsättningar att utforma stationsbatterier i vattenkraftverk med Li-jonteknik

In hydropower plants it is necessary to always have local power supply. Therefore, the plants are equipped with batteries as stationary back up power. Vattenfall Vattenkraft is using lead acid batteries but has been investigating alternatives to replace them. The aim of this study is to investigate the potential of using Li-ion technology as back up power.The study showed that Li-ion batteries have many qualities. The Li-ion technology will decrease the space and maintenance demand.

De äldre samlingarnas betydelse för kulturarvet: En studie om hur tre bibliotek arbetar med äldre material i förhållande till nationell praxis.

The aim of this study is to compare how three local librarieshandle their collections, and to compare this with handlingcollections at national level. I have investigated librarian?sopinions of their collections and how they take care andpreserve them for the future. It has also been studied if thelibraries collections of old material contains more than justold book rarities.In this study I had compared my respondents answer withSvante Beckman and Magdalena Hillström`s theory ofmuseum`s four idealtypes. Their view of a museum is in theforms of a treasury, archive, school and a theatre.

Aquaculture effluents as fertilizer in hydroponic cultivation : a case study comparing nutritional and microbiological properties

This paper evaluates the prospects for utilizing aquaculture effluents as a nutrient source in organic hydroponic, as is the case in aquaponics. The development of organic hydroponics is dependent on replacing synthetic fertilizers with organically derived nutrients, such as those found in aquaculture effluents. Also, in hydroponic cultivation the establishment of a plant pathogen suppressive micro flora is part of the plant protection strategy. Therefore, both nutritional and microbial qualities of aquaculture water and organic hydroponic nutri-ent solution were analyzed and compared. Results showed both aquaculture water and or-ganic hydroponic solution to be deficient in a number of essential elements, although or-ganic hydroponic solution was closer to recommendations.

Räddningstjänst : Definition, ansvar och samverkan

The purpose of this legal dogmatic Bachelor Thesis is to define the legal definition of ?a rescue service? and illustrate the division of responsibilities between national authorities and the municipalities with regards to the execution of emergency response operations.?A rescue service? means the emergency response actions that national and municipal authorities are legally obliged to provide to prevent or minimise injury to people and damage to property or the environment when emergencies occur or seem imminent. In the following cases a national authority is responsible for providing the requisite rescue service:1. Search and rescue (air) ? the Swedish Civil Aviation Authority is the responsible authority;2.

Common misconceptions about everyday astronomy-related phenomena among students in the 9th grade

Students of all ages host a wide variety of scientifically inaccurate ideas and conceptions about everyday astronomical phenomena, such as the seasons, the moon phases, and gravity. The field of Astronomy Education Research has over the last decade experienced an accelerating growth, although the majority of studies have been conducted in the USA. In this work, the 9th grade students of a typical Swedish school were surveyed by means of a questionnaire in order to probe their conceptual understanding of several key concepts in astronomy. In the end, the number of respondents amassed to a total of 90. The results were analyzed with a constructivist approach in light of conceptual change theory and phenomenological primitives.

Betydelsen av anlagda våtmarkers area och ålder för förekomst av sjöfågel inom Linköpings kommun

The aim of this study was to examine what impact restored and constructed pounds and wetlands have on waterfowls in the area of Linköping. The birdlife in five constructed wetlands werechosen to investigate if specific factors like age, size and vegetation affected the avian diversity in wetlands. Also, extra focus has been given to the threatened Horned Grebe (Podiceps Auritus), breeding in the studied area. The results showed that the number of species as well as individuals of waterfowl and Horned Grebe changed over time in what might be a result of succession in the wetlands. Comparing the number of birds to the size of the wetlands showed a clear correlation. Larger areas inhabited greater numbers of species and individuals.

Krishantering : New York Citys hantering av terroristattacken mot World Trade Center

ABSTRACT?Crisis Management? New York Citys management of the terroristattack against World Trade Center?Essey in political science, C-level, at Karlstad University, by Sara Kringsberg.Spring 2006. Tutor: Susan MartonThe purpose of this essay is to study New York Citys management of a larger crisis and to see how states are coping with stress. It is important to study how states manage stress so that states can learn to cope with larger crisis. That is important for the survival of the state and the protection of its citizens.

Optimering av skumdämpande additiver För användning i en lufttorkande vattenburen rostskyddsprimer

The development of defoaming additives is steadily progressing and there are therefore always new and improved additives on the market. Some modern additives provide the desired defoaming effects by themselves, in contrasts to previous additives that needed to be used in combination with other additives. The task of this bachelors thesis was to evaluate the possibility of using these improved defoaming additives, with the aim to find alternatives that give the system better defoaming attributes while, at the same time, using less of the primary products. The tests were carried out in the coating type Teknocryl Aqua Combi 2780. The coating is a waterborne air drying acrylat-latex/alkyd based coating that can be used for both single coat painting and primer.

Gränsen mellan aktiv och passiv försäljning. En analys av konkurrensreglerna på marknaden för anläggningsmaskiner

The essay focuses on the blacklisted restriction of passive sales in the block exemption to Article 101 TFEU on vertical agreements. It confirms the authors' thesis that the distinction between active and passive sales do not cause any problems in the theory, but that the reality shows the opposite. The analysis further shows that more detailed guidelines probably would not solve the problem but rather it is the objectives behind the rules and practice that causes confusion.The essay questiones whether the changes in the new guidelines for the block exemption also involves a change in the Commission's approach to the restrictions on passive sales when the same purposes as before lies behind the rules, where the goal of an integrated market is the most important. The impact of the so called "economic approach" within practice since the 1990s, when it was first introduced, suggests that changes are slow. The essay requests a greater openness to the fact that the realization of a single market and the desire to move closer to the commercial reality of companies collide.One proposed solution is given, where the rules would be designed so that 'absolute territorial protection' is prohibited, contractually and de facto, and that it is left open for companies to determine if their actions lead to this.

Vilka skillnader och likheter finns mellan UNHCR:s och UNRWA:s syn på flyktingar? : En komparativ studie mellan FN:s två flyktingorgan

Research about what differences and similarities exists between UNHCR and UNRWA in the opinion of a refugee?This examination focuses on a study between The United Nations High Commissioner for Refugees (UNHCR) and THE United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA). Both organizations are UN-related and are in charge of refugees, however they differ by the fact the UNHCR controls all of the world?s refugees with the exception of the Palestinian refugees, for which UNRWA. The aim of this work will be to examine the definition of refugees as well as their entitlements and in what way they differ depending on which organization they belong to.As theory I have, among others, used Rainer Bauböck?s book ? Transnational Citizenship?.

Utsatta barn : Hur personal vid ett utredningshem arbetar utifrån barnperspektivet och BBIC modellen

AbstractTo take the role of another is an important and a central part of human interaction. When we take the role of another we not only learn about them but also we learn about ourselves and how we interact with other people.  Social work in this form, working with directly with families in crises, is much about understanding other people?s perspective and feelings. It is important to know the strategy of one?s work and which perspective to work from.

Identifiering av merva?rden i EPC-projekt

In this report a study is carried out with the aim to identify added values of EPC projects implemented in schools in order to increase the interest of EPC projects on the market. The report examines how the planned maintenance, supervision, maintenance and corrective maintenance is affected, how insurance premiums and terms are affected, the indoor environment and how the tasks of the operating staff is changing. A literature study of energy savings, energy use in schools, maintenance and insurance as well as how energy efficiency improvements are related to the Swedish environmental objectives has been made. Visits were carried out in Ludvika, interviews were also carried out with operation technicians and local strategists in Ludvika as well as employees of insurance companies.Schools often have neglected maintenance and problems with ventilation and indoor environment. Schools also have a large energy saving potential due to their low utilization, mainly because they are empty parts of the year.

<- Föregående sida 38 Nästa sida ->