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739 Uppsatser om Organic rankine cycle - Sida 39 av 50

Statistisk behandlig av driftsdata : Ur Garpenberggruvans driftcentral

Boliden Mineral Ab's mine in Garpenberg, Dalarna is going through a massiveexpansion. The annual ore production is being increased from 1,4 million tons to 2,5million tons in less than two years period of time. Along this expansion thedepartment of mining techniques is administrating a project of optimizing the shortterm planning for the mining production. Garpenberg have since mid 90s storedinformation from all mining processes in a database.The information consists of time data from all the different activities required in themining process, for example charging, blasting, loading etc. The database also containstime data of delays that are affecting the production.

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.

Komjölk och kronisk förstoppning hos barn - En systematisk översiktsartikel

Sahlgrenska Academyat University of GothenburgDepartment of Internal Medicine and Clinical NutritionAbstractTitle: Cow?s milk and chronic constipation in children ? A systematic reviewAuthor: Sara Palm & Anna SvenssonSupervisor: Frode SlindeExaminer: Anna WinkvistProgramme: Dietician study programme, 180/240 ECTSType of paper: Examination paper, 15 hpDate: May 27, 2014Background: Chronic functional constipation is common among children. Up to a third of all who seek a paediatrician suffer from constipation and it is a widespread problem for children in many countries. Lately it has been discussed if cow?s milk can be a cause of the constipation and if it should be considered a delayed hypersensitivity.Objective: The aim of this systematic review is to examine whether there is scientific evidence to recommend a cow?s milk-free diet as a potential treatment in chronically constipated children.Search strategy: The literature searches were performed in the databases Pubmed, Scopus and the Cochrane library, using the search terms cow?s milk, constipation, milk proteins, dairy products, milk hypersensitivity, cow milk and cows milk between March 17th and April 4th 2014.Selection criteria: Randomized controlled trials measuring stool frequency in chronically constipated children on a cow?s milk-free diet were included.

Modellering och reglering av ureainsprutning på kraftvärmeverket FTG

The aim of this thesis is to improve the control of urea injection at the combined power and heating plant Framtidens Gärstad (FTG). Tekniska Verken i Linköping AB is the owner of the plant.The FTG plant consists of a boiler where garbage combustion is done. From the combustion nitrogen oxides are emitted. These nitrogen oxides are hazardous to the environment. To reduce the nitrogen oxides, injection of urea into the boiler is used.

E.ON:s transformatorflöde - en studie av återanvändningen av transformatorer i projekt krafttag

Problem StatementAfter the hurricane Gudrun in January 2005 EON Elnät Sverige AB started the project KRAFTTAG, were 17,000 km of the airborne power grid shall be replaced with cables underground. The transformers in the airborne power grid shall be dismounted, renovated if necessary and then conveyed to stations, of type kiosk.Additional new transformers, more than planned, have been bought. This is due to the dysfunctional transformer flow from the demolished power supply to projects, were the new power supply is built, the general picture is complicated, since the reconstruction involves other companies and many employees at E.ON.PurposeThe purpose of this master thesis is to map and understand the existing transformer flow. The objective is to make a recommendation on how to increase the level of E.ON? s transformer recycling.Methodthe authors have worked with a system approach, including both qualitative and quantitative data.

Användning av LCC : Vad krävs för att utforma en LCC-modell?

Titel: Användning av LCC. Vad krävs för att utforma en LCC-modell?Bakgrund: Försvarsmakten äger och anskaffar komplicerad materiel som ska fungeraunder en lång livslängd. Materielförsörjningen ska vara kostnadseffektiv ochkostnaderna kända ur ett livscykelperspektiv i största möjligaste mån. Life Cycle Cost(LCC) är en metod som kan bidra härtill.

Reuse, reduce & recycle : planning for sustainable solid waste management in Stone Town - Zanzibar

In the low-income countries of the world, rapid urbanization and decaying infrastructure results in an increasingly unsustainable situation when it comes to solid waste management. Often, the solution tends to focus on introducing technical advanced interventions based on the conditions of the high-income world. However, this thesis aims to ?nd site-speci?c solutions on solid waste management at a local scale. By taking in consideration of local conditions a customized approach is possible where the solution is not dependent on expensive structural changes.

Ett glokalt va?xelspel fo?r ett multinationellt fo?retag : En studie om branding-arbetet fo?r Post-it pa? den nordiska marknaden

Datum: 15/1/2015Niva?: Kandidatuppsats 15 hp, Fo?retagsekonomi C, HT 14 Fo?rfattare: David Norman, Johan Rappling Handledare: Jukka Hohenthal Titel: Ett ?glokalt? va?xelspel fo?r ett multinationellt fo?retag - En studie om branding- arbetet fo?r Post-it pa? den nordiska marknadenSyfte: Syftet med denna studie a?r att visa hur branding-arbetet ser ut fo?r ett globalt varuma?rke, a?gt av ett multinationellt fo?retag, pa? den nordiska marknaden samt till vilken grad marknadschefer fo?r ett varuma?rke av denna typ a?r fria att lokalanpassa brandingen. Fo?rhoppningen a?r att denna fallstudie ska fungera som ett komplement till ra?dande studier inom glokalisering.Teori: Uppsatsens teoretiska referensram besta?r av erka?nda koncept inom marknadsfo?ringsomra?det sa?som global branding, glokalisering och produktlivscykeln men a?ven Hofstedes kulturella dimensioner. Metod: En kvalitativ fallstudie fo?r det multinationella fo?retaget 3Ms varuma?rke Post- it har utfo?rts.

Kastanjemalen Cameraria ohridella : livscykel och utbredning i Sverige 2006

Cameraria ohridella, the chest-nut leaf miner, is a new pest in Sweden. These moths make leaf mines on chest-nut trees, preferably on Aesculus hippocastanum, which results in brown blotches on the foliage and early loss of leaves. Since the first observation in Macedonia in 1985 it has spread rapidly through Europe. The moth arrived in Sweden in 2003 when it was observed in Malmö and surrounding areas. In this paper a literature study describes the morphology and life cycle of the chest-nut leaf miner. Further more a test with pheromone traps examining the number of generations in Sweden is shown.

Undersökning av utökade användningsområden för Lotsbroverkets slam

Lotsbroverket is the largest wastewater treatment plant on the Aland Islands and it isdesigned for handling wastewater from approximately 30 000 persons. In 2011,Lotsbroverket produced about 2800 m3 of dewatered sludge. The sewage sludge that isproduced is transported to a contractor where it is processed to eventually be used e.g.in the construction of green space. This study aims to investigate available applicationoptions in terms of the sewage sludge that is produced in Lotsbroverket. The main aimis to study the feasibility of using the produced sewage sludge as a fertilizer in theagriculture of the Aland Islands.The sludge already fulfills limit values for heavy metals in accordance with the Act"The Aland Government´s directive on the use of sewage sludge in agriculture." Inorder to clarify the sludge content of pharmaceutical and organic substances it isrequired that the substances are identified and a risk assessment is performed.

Koldioxidutsläpp vid sticklingsproduktion av pelargonium x hortorum i Kenya jämfört med Sverige :

Long transport of products is an environmental issue discussed to an increasing extent. The consumers are increasingly aware of how far our comestibles really have been transported. The increasing levels of environmental emissions are something that concerns people. The question is nevertheless delicate and many choose to ignore it. This is no longer an option.

Metodik för bestämning av åkerdikens status : fallstudie av ett dike i Munktorps socken

Agricultural drainage ditches are links between fields, lakes and oceans, having the potential to transport e.g. sediment and nutrients. When in a good condition, drainage ditches can act as sinks for e.g. phosphorus and sediments and prevent eutrophication downstream. The aim of this study was to determine the condition of one agricultural drainage ditch and to come up with suggestions for appropriate measures. The aim was also to determine which of the ditch?s properties that were possible to evaluate visually, which processes they represented as well as which properties required complementary physical analysis. This in order to contribute to the work of developing a method for determining the status/condition of agricultural drainage ditches.

Skolans organisering och pedagogiska arbete med svenska som andraspråk : ur ett lärarperspektiv

Research has shown that students with another mother tongue than Swedish terminate elementary school with lower grades in all subjects, compared to students having Swedish as a mother tongue. This fact justifies further research on the forms of teaching Swedish as a second language. Attention has been given to the fact that the students with another mother tongue than Swedish have to cope with "dual learning". Parallel to the learning of a second language they need to obtain knowledge in all other subjects. The purpose of this thesis is to investigate how the School organise the work with students having another mother tongue than Swedish, and to find out how teachers in other subjects solve the problem of having students that struggle with "dual learning".

Foderbetor och kogödsel som substrat för biogasproduktion; anaerob mesofil samrötning i labbskala

One of Sweden?s sixteen national environmental objectives strives to decrease the impact on the climate. By 2020, green house gas emissions should be 40 % less compared to the levels of 1990 and a minimum of 50 % of the energy consumption should come from renewable energy sources. Because of this there is a great need of increasing the production of renewable energy. This is where biogas comes in as a competitive alternative.

Kan sex veckors plyometrisk träning förbättra maxhastighet, hopphöjd i vertikalhopp samt maxstyrka i knäböj  hos unga män?

Bakgrund: Maxhastighet är en viktig faktor inom många idrotter. Olika faktorer som påverkar maxhastighet är anaerob kapacitet, anaeroba energikällor, muskelstyrka samt förmåga att utveckla power. Plyometrisk träning, där explosiva hopp utförs, har som mål att förbättra stretch-shortening cycle (SSC) och power, vilka är viktiga faktorer vid sprint.Syfte: Syftet med studien var att undersöka hur sex veckors plyometrisk träning påverkade maxhastighet, hopphöjd i vertikalhopp samt maxstyrka i knäböj. Studien undersökte även sambandet mellan maxhastighet och hopphöjd samt maxhastighet och maxstyrka. Den här studien är viktig då ingen tidigare studie till vår vetskap har undersökt hur plyometrisk träning påverkar maxhastighet, hopphöjd och maxstyrka.Metod: Tre test användes för att mäta maxhastighet, hopphöjd samt maxstyrka.

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