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1394 Uppsatser om Air volume flow - Sida 59 av 93
Torrgranulering av slagg: Experimentell och numerisk modellering
Vid torrgranulering av masugnsslagg med roterande disk hälls den smälta varma slaggen i en stråle på den roterande disken. Slaggen slungas sedan radiellt ut åt sidorna från disken och sönderdelas till partiklar. Torrgranuleringen bidrar både till att en värdefull produkt i form av cement kan framställas, samtidigt som energin från den varma slaggen återvinns. I dagsläget finns dock inte tillräcklig kunskap om hur olika processparametrar påverkar sönderdelningen och storleksfördelningen av partiklarna för att kunna tillämpa processen inom industrin. Syftet med projektet var att skapa en experimentell och en numerisk modell av torrgranuleringsprocessen med roterande disk för att undersöka hur olika processparametrar påverkar sönderdelningen och storleksfördelningen på partiklarna, samt att utveckla en bildanalysmetod för att validera den numeriska modellen mot de experimentella resultaten.En experimentell modell av torrgranuleringsprocessen med roterande disk skapades i laboratorieskal och förenklades genom att vatten användes istället för masugnsslagg.
?Pengar dödar kreativitet? : En kvalitativ intervjustudie av kreativa skapandeprocesser
Studien syftar till att undersöka hur personer som ägnar sig åt kreativt skapande motiverar detta arbete, samt hur de uppfattar att detta skapandehar påverkat dem som individer. För att tillmötesgå detta syfte tillämpades en narrativ intervjumetod, respondenterna bestod av fyra individer som håller på med olika kreativa skapandeformer. Studiens resultat visar på att den största anledningen till att individerna väljer att skapa kreativt i sin vardag helt enkelt bygger på att de mår bra av det, det stärker deras identitet. Utöver detta visar även studien på att de genom sitt kreativa skapande även upplever att de blir en del i ett sammanhang, de känner tillhörighet med likasinnade.Vidaremenar även respondenterna att deras kreativa skapande har lett till att de känner sig mer självständiga och på så vis lättare kan stå emot olikanegativa sociala normer de annarsskulle påverkas av i högre grad.Slutligen kritiserar respondenterna även det rådande samhällsklimatet genom att hävda att det i hög grad fråntar individer deras möjlighet till kreativt skapande, och i och med det även stora delar av människor möjlighet till att skapa en identitet som en självständig och kritiskt tänkande individ..
Att investera via delägarbaserad crowdfunding : Motiverande och yttre sociala faktorer som bidrar till ett investeringsbeslut
The purpose of this research was to examine what motivates and influences an individual to invest in a project or company through equity-based crowdfunding. The intention was therefore to identify internal and external motivation factors and examine how external social factors such as the Internet, other individuals? investment decisions and interaction in social groups affect an individual when he or she invests through equity-based crowdfunding. The results showed that both internal and external motivation factors are important components of an investment through equity-based crowdfunding. External motivators proved to be for example yields and helping entrepreneurs.
Enegiutredning Hotell Princess
This report will show the energy usage of Hotel Princess in Sandviken, Sweden. When the hotel changed owner an examination of the hotels heating, ventilation and sanitary systems were done. The report showed flaws in the ventilation system, and is why the new owner wanted a closer look at the energy use of the hotel. The original building was built in the 1930s and two major extensions have been built, one in the 1950s and the most recent in the 1980s. An assumption made is that the building parts were built to the restrictions during the time. Activities on the hotel include sleep over, conference, night club, massage and swimming in the hotels pool section.
Arenans betydelse för en stad : En studie av en arenas tillförande av väde i platsmarknadsföring
AbstractThe purpose with this essay has been to gain a greater understanding and clarify how an arena can create value within place marketing and development of a place brand. This will be achieved through a description of which values an arena causes in the surrounding areas and an understanding of how these values can be interpreted through the place brand. We decided to base our study according to the following two questions:1. What are the underlying reasons why there has been such a big trend with arena project?2.
Samkörning av databaser-Är lagen ett hinder?
Title:Comparison of databases ? Is the law an obstacle?Authors:Alexander Ankarberg, Applied Information Science.Tutors:Lars- Eric LjungProblem: Cross running databases is getting more and more significant during the development of the information flow. There are huge benefits if we start to use the technique that already exists. The law is today an obstacle, so what would happen if the law wasn?t so stern.
Asplund : Arbetsbord
In recent years, the Internet has exploded with different kinds of social media, where a significant function is to share your life in text and images. This changes how we form our identity, our religious identity included. The aim of this paper was to study how Instagram forms a space for the creation and development of religious and spiritual beliefs. For this purpose, Instagram updates from five women with yoga oriented Instagram accounts have been analyzed in relation to two theories: Paul Heelas? och Linda Woodhead?s theory of a spiritual revolution and Heidi Campbell?s theory of networked religion.The aim of the study was to explore how these women presented themselves in their Instagram flow and what part religion and spirituality had in their presentations.
Energieffektivisering av färskvattensystemet på Skärblacka pappersbruk
The purpose of this master thesis was to study the water system for mechanically cleaned water at Skärblacka mill, in order to find and evaluate possibilities of using energy more efficiently. The thesis also includes an evaluation of the software tool ?Pumpanalys?Skärblacka mill produces pulp and paper. The large amount of water required is cleaned mechanically through filters and called mechanically cleaned water (MR0). The MR0 water is pumped out to the factory by four crude water pumps.
Förhållandet mellan hudblodflöde och fysisk aktivitet.
SAMMAMFATTNINGBakgrund: Reaktiv hyperemi definieras som ett övergående ökat blodflöde över det normala efter en tids ischemi. Det kan registreras med laserdopplerteknik. Att registrera reaktiv hyperemi är ett sätt att värdera mikrocirkulationen. Det finns många flödesvariabler att studera varav tid till maxflöde efter ocklusion är en. Det har gjorts studier som undersöker om det finns ett samband mellan reaktiv hyperemi och fysisk aktivitet/syreupptagningsförmåga.
Energi- och exergiflöden i stålframställningsprocesser vid
SSAB Tunnplåt AB i Luleå
Energy costs are high nowadays and that is the reason why the energy consumption needs to become as small as possible in most of the companies. To accomplish the small energy usage one needs to map the energy flows, study them and monitor them. One method that can be used for this is energy balance calculation. The method gives an opportunity to separate different energy flows and see where each flow is heading. There is also another method which is more advanced than energy balance calculation.
Skapandet av ett integrerat ledningssystem
To be able to compete on the market environmental Management System has become an important part of operations work. However, many companies still haven?t implemented an environmental management systems due to lack of time and the high costs. One of the companies with this problem is Falu Bildemontering. Their goal is to accredited according to the ISO 14 001 certificate.
Migrationspolitik och xenofobi : En studie av emigranters och flyktingars rättigheter i Grekland
AbstractThe purpose of this study is to examine how Greece?s migration system functions and how immigration and asylum policies manifest themselves during the countries current severe economic crisis. More precisely, examining how the regulatory framework and policies regarding refugees' and migrant situation effects practical implementation. The research questions raised are; - How are refugees and other migrants' rights in Greece respected, from a legal, political and moral perspective? What impact can racism have on the treatment of refugees and other migrants? A contextual analysis of ideas through an analysis of the political programs/agendas was used and contrasted, through theories concerning racism, nationalism and globalization to further nuance the situation concerning refugees' rights.
Optimering av driftläggningar i Fortums nät
Future emission legislation puts great emphasis on increasing the efficiency of the engine, thereby reducing fuel consumption. The tribological contact between cylinder liner and piston ring is where an great amount of energy is lost due to friction, and by reducing these losses an reduction in fuel consumption can be achieved.The aim of this thesis was to evaluate the tested piston ring coatings against a plasma sprayed cylinder liner and rank these combinations of materials for friction and wear resistance. The coatings that were tested was Cr + Al2O3, (Al,Cr)N, two types of CrN and WC / C.The experimental tests were performed with a so-called pin-plate, where used oil with addition of an acidic mixture of sulfuric and nitric acid to mimic the acidic condensate formed when exhausts recirculate, were added with a continuous flow. The results were then analyzed by weighing, studies by optical microscopy and scanning electron microscopy (SEM) and profile measurements.The results from each material combination were that the plasma coated cylinder liner wears too aggressively in order to yield a ranking of the piston ring coatings based on the parameters of friction and wear resistance. It is therefore proposed that an alternative coating on the cylinder liner should be developed, lacking the large abrasive wear on piston rings and that can withstand the corrosive environment resulting in engines equipped with EGR.
Makten över kommunikationen : en kvalitativ studie av kommunikatörens yrkesroll
The communicator has a professional role which is relatively unspecified and hard to define. To work with communication can mean several different tasks, who also might vary between different types of organizations. The purpose with our study is to clarify the professional title communicator and its meaning. By applying a power perspective on the communicators experienced professional role in meaning to find out who has the power over the communication. Our study is made of qualitative interviews with four professional communicators working in private organizations. We have used semi structured interviews in our study which means that we before we went through with the interviews defined themes which the interviews were built upon.
Bättre åtkomst till avverkningstrakter med anpassat marktryck från avverkningsmaskinerna
The global climate-change means increasing mean-temperature and higher precipitation in Sweden, which leads to shorter periods of frozen ground in the forest. At the same time the harvesting machines are getting bigger and more powerful. The forest industry aim at an even wood flow, and the ground damage has to be as low as possible. The two biggest causes for ground-damage is the bearing capacity of the forest ground and the ground-pressure of the harvesting machines. The aim of this study was to find out some rules for the machine choice considering ground pressure, when harvesting on ground with low bearing capacity.A field study, using a Valmet 890.3 forwarder, was carried out where different ground pressures and their effect on the ground were tested on two different types of ground.Additionally, an inventory of damaged harvesting grounds was made.