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2547 Uppsatser om Renewable energy sources - Sida 61 av 170

Energieffektivisering av sjo?farten : En studie om att implementera obligatoriska riktlinjer

Vi lever i en värld av klimatförändringar där det ständigt söks efter lösningar för att minska utsläppen av växthusgaser. IMO har infört SEEMP:en med målet att reducera utsläppen från världshandelsflottan och därmed öka dess energieffektivitet. Med denna bakgrund har syftet varit att undersöka hur svenska tankrederier implementerat och tillämpat SEEMP:en samt kartlägga åsikter kring den. En kvalitativ metod har använts för att på djupet undersöka rederiernas tillvägagångssätt. Undersökningen omfattar fyra semistrukturerade intervjuer med totalt sex personer ifrån två rederier där både ombord- och landanställda finns representerade.

"Varder lekare sårad..." : Musik, politik och ideologi i tidigmedeltidens Norden

The aim of this paper is to illuminate and discuss the political and ideological aspects of Early Medieval Nordic music. Due to shortage of sources, this issue has been overlooked until now. Did Early Medieval Nordic music meet the requirements for political and ideological use? In what ways could music potentially be used politically and ideologically? Was music used as a political and ideological tool? This is examined by a contextual analysis combining music history and historical archaeology. The survey consists of a background account, focusing on the potential of music and some requests for political use, and three case studies, where musical reflections of societal tensions is investigated in folk music lyrics, Icelandic sagas and church art.

Disclosure Tone in Environmental Reports ?A study of companies in the energy sector

Background and problem discussion: Sustainability reporting has recently risen in importance and a rising number of companies choose to issue voluntary stand-alone sustainability reports. Their non-regulated nature increases the opportunity for management to angle the information in these disclosures to their own advantage. Lately the focus has shifted from examining what kind of information is provided in environmental disclosures, to analyzing how the information is presented.Purpose: The purpose is to examine if managers in the energy sector use optimistic tone when issuing sustainability reports. The aim is to find out if the tone applied in environmental disclosures is in congruence with either the environmental or economic performance or if an excessively positive tone is being used to mislead readers.Limitations: This study is limited to information found in environmental disclosures from private companies in the energy sector, issued in 2012 or 2013. Environmental performance is defined as the amount of CO2e emissions and economic performance refers to annual company revenues.Methodology: The quantification of optimistic tone is conducted using a content analysis, relying on a pre-specified wordlist and a pilot study.

Produktutveckling av koncept för isbanesystem

Today most ice rinks in Sweden use secondary refrigeration systems with a solution of calcium chloride and water as secondary refrigerant. Due to the large amount of energy such a system uses more efficient systems would be desired.An earlier study concluded in the possibilities of using carbon dioxide as secondary refrigerant with copper tubes as the loops in the ice rink. Since then 3 ice rink refrigeration systems has been built with carbon dioxide in copper tubes. Excluding the ones being direct involved in those projects there is still very little knowledge about how these system works. This study has been made primarily with the aim of adding to the knowledge concerning availability and cost and secondary to look at possibilities for improvement.A comparison between systems with carbon dioxide, calcium chloride respective ammonium solved in water has been made by using Decision Matrix.

MKB för vägprojekt i Sverige: Svårigheter med att tolka och använda en MKB

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.

Materialvagnstransport

A clean and affordable energy source for cooking is deficient in developing countries. People rely on fuels that contribute to environmental, social and health problems.Biogas is an alternative energy source and an increased investment in small-scale biogas production can in several developing countries be found. Several projects have started to use the technology in developing countries because of the benefits with biogas. Some cases in the establishment of biogas plants have succeeded and some have not. The study is a literature review supplemented by two field studies.

Skolbibliotekets betydelse ur ett elevperspektiv

The purpose of this Master?s thesis is to examine what the data from recent Library- and Information Science studies tell us about the importance of school libraries in a student perspective. Our theoretical framework is built upon Elisabeth Tallaksen Rafste?s concept about the values of school libraries to students. Our aim is to investigate how students between the ages of 15 and 18 use and experience school library.

Vilket ursprung har nyheten som du läser i din lokaltidning? : - En fallstudie i lokaltidningsjournalistikens informationskällor och informationskanaler

AbstractTitle: Where does the news that you read in your localpaper come from? (Vilket ursprung har nyheten som du läser i din lokaltidning?)Number of pages: 45 (57 including enclosures)Author: Elin RantakokkoTutor: Göran SvenssonCourse: Media and Communication Studies 30 hpPeriod: Fall of 2007 University: Division of Media and Communication, Department of Information Science, Uppsala University Purpose/Aim: This paper has the aim to make a systematic survey of the information source and channels that local newspapers use. How much space they get in the paper and how the newspaper works with these sources and channels. The front pages of the newspaper are going to be compared with the insides of the newspaper. The reports roles in the making of news are also examined.Material/method: To be able to answer my questions I?m going to use three different methods.

Utformning av sättverktyg

A clean and affordable energy source for cooking is deficient in developing countries. People rely on fuels that contribute to environmental, social and health problems.Biogas is an alternative energy source and an increased investment in small-scale biogas production can in several developing countries be found. Several projects have started to use the technology in developing countries because of the benefits with biogas. Some cases in the establishment of biogas plants have succeeded and some have not. The study is a literature review supplemented by two field studies.

Strömkontroll till aktiva magnetlager med noggrann och störningsreducerad strömmätning

There is always a need for more effective ways to store energy in order to reduce the human impact on the environment. One step on the way can be the use of flywheels as kinetic energy storage devices. Low frictional losses are essential for a flywheel to be effective. To minimize these losses active magnetic bearings (AMB) can be used to keep the shaft centered instead of the more conventional ball-bearings. AMBs use actuators and a fast control system that needs correct and noise-free measurement data of the shaft position and the current in the actuators to work properly.This thesis explains the process of constructing power electronics and a current measurement system for active magnetic bearings (AMB).

Medicinska elektroniska tidskrifter hur har forskningsbibliotekariens arbetssätt påverkats?

The aim of this study is to describe how Swedish research librarians feel that their work has been affected by electronic journals. The study focuses on medical electronic journals accessed through consortia agreements via Bibsam, the Royal Librarys Department for National Co-ordination and Development. This thesis includes two main parts: a literature survey and an empirical study. The literature survey shows that since the 1990´s most research libraries are hybrid libraries including both printed and electronic information sources and that librarians tasks to seek and organize information have remained but the tools have changed. Qualitative interviews were performed with four librarians at two university libraries and one university college library on how their work with electronic journals differed from their work with printed journals, which new tasks the electronic journals have brought and which have disappeared and how the librarians professional role has been affected.

Kostråd på internet : En tva?rsnittsstudie bland unga vuxna

AimThe study aims were to identify young adults? sources of nutritional advice on the Internet and how they perceive the credibility of these. The study also aimed at exploring young adults' knowledge of national recommendations issued by the National Food Agency.MethodA web-based survey was distributed on the social media platform Facebook. The questionnaire contained a total of 14 questions regarding online nutritional advice and its credibility. Finally, it requested the respondent's knowledge and credibility of the national nutritional recommendations.

Kostförändring och/eller fysisk aktivitet vid fetmabehandling

The aim of this study was to investigate whether a dietary change, physical activity or a combination of both gave the best result when treating obesity, concerning weight loss and BMI. Excessive weight and obesity are today a big health-issue and it is estimated that 10 % of the men and 12 % of the women in Sweden have a BMI over 30, i.e. are suffering from obesity. The corresponding number for children is 3 %. No one can say for sure what causes obesity but there are many theories.

Kontinuerlig temperaturmätning i bädden på gratevagnar

Luossavaara-Kiirunavaara Aktiebolag (LKAB) är en gruvdriftskoncern med järnmalmsbrytning som huvudsaklig verksamhet. En av produkterna tas fram genom att raffinera järnmalm till pellets vilket är en efterfrågad produkt vid ståltillverkning. Vid sintring av råkulor till pellets är temperaturen väsentlig för att få så hög oxidation som möjligt av magnetit till hematit och för att få rätt fasthet. För att reglera värmen bör temperaturen mätas bland råkulorna eftersom det är kulornas temperatur som är det viktiga.                                 Projektet går ut på att undersöka möjligheterna att mäta temperatur bland råkulor på gratevagnar som åker genom en pelletsugn med ett permanent mätsystem. Här ställs höga krav på mätsystemet på grund av miljö, portabilitet och drifttid.Miljöanalyser gjordes för att ta reda på vilken påfrestning ett mätsystem bör klara av. Förslag om placering av mätutrustning framtogs genom kartläggning av miljön.

Projektledares synpunkter på projektprocessen

A clean and affordable energy source for cooking is deficient in developing countries. People rely on fuels that contribute to environmental, social and health problems.Biogas is an alternative energy source and an increased investment in small-scale biogas production can in several developing countries be found. Several projects have started to use the technology in developing countries because of the benefits with biogas. Some cases in the establishment of biogas plants have succeeded and some have not. The study is a literature review supplemented by two field studies.

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