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1088 Uppsatser om Fraction distribution - Sida 5 av 73
Fluidrörelse- och värmetransportsmodellering i götugn
The purpose of this thesis for Sapa Heat Transfer is to examine a furnace in which aluminium is pre-heated before hot rolling. The project is modeled in a computer environment in which the air flow in the furnace and the heat transfer to the aluminium solids are included. The computer environment and its governing equations, as well as boundary conditions and generalizations, are presented and explained.The simulations are based on two models. The first model has an asymmetric solid placement, which is how it looks in today's ovens. It is validated against collected data.
Effects of milking system on plasmin and plasminogen activity in bovine bulk milk
Protein is an important component in various milk products and has a crucial role in the final quality. Excluding non-protein nitrogen, bovine milk contains about 3.3% protein whereas about 80% of this fraction consists of casein. There are four major members in the casein family: ?s1-casein, ?s2- casein, ?-casein and ?-casein. Proteolytic enzymes are the cause of degradation of the economically important milk proteins.
Ny princip för spänningsreglering i Fortum Distributions mellanspänningsnät i Stockholm.
The voltage regulation in Fortum Distributions medium voltage network in Stockholm does not work satisfactory. This results in too high distribution voltages with many customer complaints as a consequence. The reason is the model responsible for compensating for voltage drops in the distribution network. Despite several adjustments Fortum has not been able to find the source of the high voltages and has therefore appointed an investigation in the form of a thesis work.The aim of this investigation is to locate the error and to produce a proposal regarding the solution of this error using the existing system, common industrial knowledge, state of the art research and the option to use voltage readings from the different substations.The conclusion of this master thesis is that the largest contribution to the high voltage levels is made by the large compensation for distribution loses. Furthermore an additional error in the model has been found.
Undersökning av elkvalitet i distributionsnät med omfattande vindkraftselproduktion
The goal for this master thesis project has been to investigate the power quality in adistribution grid, which has a high fraction of dispersed power production due towindmills. The study has been done on a grid in Laholm South of Halmstad, whereapproximately 45 windmills are connected to the distribution grid owned by SHKEnergi. The investigation has been focused on to two radialy fed 20 kV lines, wheretwelve windmills are connected.Voltage variations have been studied by creating a model of the grid in the simulationprogram SIMPOW. The largest deviation that has been found in any point of the gridis ±1.9 % of the nominal voltage. This deviation is a result of varying powergeneration from the windmills and the voltage regulation at the connection point ofthe line.
Skillnader i upptag, metabolism, distribution och utsöndring av makrocykliska laktoner hos olika djurslag
Makrocykliska laktoner har varit flitigt använda avmaskningsmedel hos olika djurslag sedan mitten av 1980-talet och används fortfarande. För att avmaskningsmedel ska vara så effektiva som möjligt är det viktigt att veta hur de tas upp och omsätts i kroppen hos olika djurarter. Detta för att kunna anpassa doseringen till olika djurslag. Några farmakokinetiska parametrar har undersökts för att se om det förekommer skillnader i upptag, distribution, metabolism och utsöndring mellan nötkreatur, får och gris. Genom att jämföra olika studier fann jag skillnader i halveringstid, AUC, Cmax och tmax mellan gris, nötkreatur och får.
Värmning av avloppsvatten med spillvärme för att förbättra kvävereningen -Temperaturens inverkan på kvävereningen
The goal for this master thesis project has been to investigate the power quality in adistribution grid, which has a high fraction of dispersed power production due towindmills. The study has been done on a grid in Laholm South of Halmstad, whereapproximately 45 windmills are connected to the distribution grid owned by SHKEnergi. The investigation has been focused on to two radialy fed 20 kV lines, wheretwelve windmills are connected.Voltage variations have been studied by creating a model of the grid in the simulationprogram SIMPOW. The largest deviation that has been found in any point of the gridis ±1.9 % of the nominal voltage. This deviation is a result of varying powergeneration from the windmills and the voltage regulation at the connection point ofthe line.
Metoder för kartläggning och analys av nätförluster i lågspänningsnät
An important process for grid companies in order to reduce power losses in electricity distribution grids is to figure out where and how they appear. This report describes the factors that cause power losses in low voltage distribution grids and methods for how they could be measured and analyzed. Measurement data for consumed and injected energy were collected for twelve low voltage distribution grids owned by Gävle Energi AB in order to analyze the size of the power losses and how the measurement uncertainty affects the collected data. Then models of three of the grids were created in MATLAB in order to analyze the data and the power losses were calculated to be compared to the collected data. Curve fitting were also used as a method in order to analyze the power losses from collected data.The results show that the losses in the studied grids are low.
Etablering genom icke-traditionell marknadsföring : En studie av Goohs etablering på marknaden för färdigmat
Problemformulering: Små företag kan ha svårt att slå sig in på en marknad på grund av en begränsad marknadsföringsbudget och konkurrens från andra aktörer. Dessa företag måste därför i många fall använda andra mindre kostsamma metoder än traditionell marknadsföring för att etablera sig på en marknad.Syfte: Att undersöka hur ett mindre företag kan etablera sig på en marknad genom användandet av andra marknadsföringsstrategier än traditionell reklam. För att besvara vårt syfte två delar ur 4 P undersökts, plats och påverkan (distribution och marknadskommunikation).Metod: En fallstudie har gjorts av företaget Gooh där fyra personer på Gooh har intervjuats genom semi-strukturerade intervjuer.Analys: Gooh har gått från en exklusiv distribution till en mer intensiv distribution för att nå ut till fler kunder och konsumenter. I sin marknadskommunikation har Gooh använt sig av olika aktiviteter som viral och buzz marketing för att generera word-of- mouth både bland konsumenter och kunder.Resultat: Gooh har ökat omfattningen av distributionen samtidigt som de ökat omfattningen av marknadskommunikationen för att nå ut till fler kunder och konsumenter och etablera sig på marknaden för färdigmat.Slutsats: Gooh har använt sig av en kombination av distribution och marknadskommunikation i sin marknadsföring och genom detta fått ett stort antal kunder och konsumenter och därmed etablerat sig på marknaden genom icke- traditionell marknadsföring..
Modell för analys och effektivisering av e-handel med tillhörande distribution : En fallstudie på EM-Möbler
Bakgrund och problem: Anva?ndningen av e-handel har va?xt de senaste a?ren och detta har medfo?rt sto?rre mo?jligheter fo?r kunder. E-handeln har mo?jlighet att na? ut till en sto?rre ma?lgrupp utan geografiska hinder. Detta medfo?r ett behov av fo?ra?ndring i distributionen av fysiska produkter.
Digital videoväxel
This thesis discusses the possibilities to distribute digital video in a military vehicle. Today, an analogue system is used, which has a maximum capacity of eighteen video sources and the same number of monitors. The purpose of this thesis is to increase the systems capabilities regarding secure distribution and additional functions. Both software and hardware tests are made to investigate the features of the digital video standard MPEG-2. Both the coding delay and the image quality are of great interest.
Analys och utveckling av en metod för distribution av data
Detta examensarbete omfattar utveckling och test av en metod för distribution av data i ett multidatabassystem. Testen av metoden har gjorts genom att den har implementerats i en fallstudie. Fallstudien berör en organisation som har behov av att integrera tre av sina databassystem. Detta för att information ska kunna utbytas mellan dessa. Integrationen av databassystemen har gjorts på ett sådant sätt att de data som distribueras från dessa skickas till en central databas, med SQL Server som databashanterare.Det verktyg som har valts att användas i examensarbetet för att lösa uppgiften är Data Transformation Services, DTS, i SQL Server..
Anestesi och intensivvårdssjuksköterskans hantering av mekanisk ventilation : - en litteraturstudie om minskning av atelektasbildning och förebyggande av komplikationer
Background Atelectasis is a commun respiratory complication related to general anesthesia and may contribute to pneumonia and acute respiratory failure. Atelectasis apear within 10 minutes after anesthetization and occur in 90% or more anesthezied patients regardless of age and gender. The aim of this study was to indentify if there are any evidence for which methods are ultimate or are most efficacious to reduce and prevent the formation of atelectasis. Methods This study is a descriptive litterature study where 28 scientific studies have been indentified for review and analysis. ResultsThe use of 100% oxygen during the induction of anesthesia favors the developement of atelectasis. This can be prevented by preoxygenation with oxygen content of 100% combined with a PEEP of 6-10 cmH2O. When free airway is secured, oxygenation with 100% was found to be unnecessary.
Bedömning och kunskapssyn i matematik : Förändringar i lärares bedömningspraktik
This paper examines women's positions in the music industry. By quantitativelyinvestigate ten major companies on the swedish music market, the authors have beenable to mapp positions that are dominated by women and as well as men. The essaydiscusses several theories of both gender in organizations and gender in society inorder to analyze the quantitative results.The aim of the paper is to highlight the current segregation of careers in the musicindustry as well as to lay a foundation for further research on why it is segregated.Clear graphs shows the gender distribution between women and men in business butalso the distribution of gender in occupations / positions in similar companies. In theanalysis the authors reflects on the results using relevant gender theories. In theconclusion, the authors explain the result generated by the analysis and illustrates theprevailing segregation that exists in the music industry.This paper has concluded that a seemingly even distribution between men andwomen in business organisations can sometimes be misleading.
Bestämning av optimal fordonspark -Distribution av bitumen vid Nynäs AB
Nynas produces bitumen at two refineries in Sweden. The bitumen is shipped to seven depots along the swedish coast line, and from the depots special trucks handle the transportation to customers. Recently Nynas has transformed its supply chain and closed down a few depots. At the moment the company is considering a further reduction of the number of depots. In connection to these discussions an analyse of the companys distributionsystem and of possible changes is required.
BitTorrent i kommersiella system : Identifiering av incitament och användarbeteenden
Companies that sell digital products such as software and movies transfer large amounts of data to its customers. In order to send this amount of data using FTP or HTTP and still maintain a high speed transfer rate it is required that the company have a large number of servers and a huge bandwidth. Servers and bandwidth costs money which means they have great costs on the distribution of their products. In order to reduce distribution costs, P2P technology can be used and the most powerful technology to transmit popular files is called BitTorrent.BitTorrent requires users to share their bandwidth. Nowadays, BitTorrent is frequently used to transfer products that are free of charge; one example is the Linux distribution Ubuntu.