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Interactions between liquid jets and soap film

Felicia Ullstad Såphinnor och vattenstrålar Såphinnor är ett väl studerat fenomen inom fysiken. De studeras som ett skolboksexempel på tunnskiktsinterferens och används mycket ofta för att demonstrera att minimering av ytor. Tunna vätskestrålar är också ett välutforskat område, då de kan användas till allt från bestrutning, i bläckskrivare till att skära i stål. Kombinationen av såphinnor och tuThe interaction between thin jets of water and soap films have been studied. The experiments conducted for this thesis are the first done on jet - soap film interaction with different liquids in the two components. The results are very different from earlier studies where the same liquid was used for both components. Two behaviors were found for the interaction, depending on the incident angle bet

Investigation and Evaluation of Methods for Measuring Surface Texture on Worktops and Kitchen Fronts

In this Master Thesis different methods for measuring and evaluating surface textures have been investigated and evaluated. A method for digitizing textures called photometric stereo have also been studied. The purpose has been to find methods that can replace or supplement the current method of visual inspection used for surface texture studies by IKEA of Sweden. The suggested methods are going t

Motiv till val av avskrivningsmetod för fastighetsföretag – hur kommer införandet av komponentavskrivningar påverka företagen?

Syftet med denna uppsats är att utreda vilka motiv fastighetsföretag har med sina avskrivningar. Studien undersöker vilka överväganden som kan behöva göras för att upprätthålla dessa motiv vid övergången till K3 och komponentavskrivningar. Studien är genomförd utifrån kvalitativ forskningsmetod. Som en del av den kvalitativa metoden har vi genomfört intervjuer med ekonomiansvariga på fastighetsför

Experimental Tools for Studies of Heterogeneous Catalysis - Development and Case Studies

Utveckling och testning av reaktorer för katalysmätningar Katalysatorer är oumbärliga i såväl livsprocesser som industriella tillämpningar. Bilismen är ett exempel där katalysatorer används vid såväl bränsletillverkning som avgasrening. Men detta är långt ifrån det enda användningsområdet. Katalysatorer är också delaktiga i tillverkningen av uppemot 90% av alla kemikalier. Industriella katalysaIn this project four reactors for studies of heterogeneous catalysis have been developed. They were tested using case studies, especially concerning methane oxidation over palladium. The test measurements showed that the reactors work or would work very well after slight modifications. The first reactor allowed for activity measurement using mass spectrometry for temperatures up to at least 1000°C

Läsning och skolbibliotek - om elevers läsvanor och skolbibliotekets roll

In my paper, I wanted to highlight the school libraries and its importance. Has conducted an empirical study of students grades 6-9 Bokelund School, Sölvesborg to examine how students use the school library and how much they are using and staying in the school library. Also examined how students see the school library. Also examined their reading habits and the school library aroused their interes

Acceptanskriterier för samhällsrisker - En studie över tillämpningen vid fysisk planering

Since there are no laws that controls how a societal risk analysis is to be made, or what acceptance criteria that should be used, people have different opinions regarding this. This contributes to non-homogenous risk management which in turn leads to a situation where the society’s safety isn’t the same in all of the country which the law says it should be. To get in terms with this problem there

Fire development in insulated compartements - Effects from improved thermal insulation

New construction solutions, such as low energy buildings and lightweight ship constructions in FRP composite, are designed with more insulation than regular constructions. This may affect the fire development, leading to dangerous conditions for occupants and firemen. Will increased thermal insulation of a compartment affect the fire development so that a higher heat release rate is reached; does

Longtan Dam – Dam safety and production losses under dynamic load

The energy demand in China is steadily growing and large hydropower dams become more and more common. A major dam failure could cause large environmental, economic and social effects, and work concerning safety in dams is therefore essential in order to keep the utilization of hydropower at as low risk level as possible. This master thesis analyzed Longtan Dam under static and dynamic conditions w

Introduction of biological and active Modified Atmosphere Packaging through microorganisms

Modified Atmosphere Packaging (MAP) is a technique for modifying internal gas atmosphere of the food package to slow deteriorative reactions inside the package and prolong shelf life of the product. However, due to current limitations of this passive technology, there might be some opportunities for introduction of active MAP through microorganisms. Therefore, the study is conducted on investigati

Marknadsförutsättningars inverkan på internationella marknadsföringsstrategier - En fallstudie på den svenska modemarknaden

Inom forskningsfältet för internationella marknadsföringsstrategier har det sedan länge funnits två läger av teoretiker. Det finns de som talar för standardisering av marknadsföringsstrategin och de som talar för anpassning. Forskningen som söker att utreda fenomenet är omfattande men fokuserar ofta enbart på kommunikationen med kund, samt på produkter eller varumärken. Då allt fler modekedjor bli

Automatic Fire Alarms – Response procedures

In this thesis, a risk analysis covering response procedures regarding fire alarms from automatic fire alarm systems is presented. Risk factors regarding current procedures in Iceland are identified, analyzed and discussed with regards to acceptance. The work results in a building classification model which classifies buildings/activities with regards to the response of the public services and pri

Förändringsprocessen i Landskrona stad - tillbaka till framtiden?

Uppsatsen undersöker hur en förändringsprocess implementeras och genomförs med utgångspunkt i en kommunal organisation och ur ett platsutvecklingsperspektiv. Där Landskrona stad ligger till grund som fallstudie för uppsatsen. Tidigare problem som identifieras inom ämnesområdet är att de flesta organisationer som strategiskt vill implementera en förändring misslyckas. Ytterligare ett problem är att

Requirements Analysis of Using Object-Orientation in Filling Machine Systems

The use of an object-oriented approach in software engineering has proven to be successful for many years, but in the fields of mechanics and automation it has been ignored for long. The Tetra Pak Carton Bottle automation team believes that a switch from a function-oriented architecture to an object-oriented one would be of benefit not only to them but also any department which is involved with de

Planning for a sustainble community, the curious case of Lund Northeast / Brunnshög

We’re living in a time where more and more evidence of our impact on the environment appears every day. A lot of resource and time have been spent in order to identify and inform about the ecological footprint us humans enlarge day by day. The realization of human impact on the environment introduced large scale research and UN reports on the subject and a definition and goal to strive after was e

MISSING GRAINS- Post- Harvest Loss in Maize in Kakamega, Western Kenya

Globally, around a third of all food produced is lost or wasted. This means a decrease in food available to meet global food demands, but also a loss in resources used for production, transportation and processing. With agricultural production currently facing new challenges including population growth and, increasingly, climate change, ensuring productivity and sustainability in agricultural prac

Konsekvenser av krig : en studie av svenskt ansvar gentemot tolkarna i Afghanistan

Swedish authorities received in July 2004 a letter from 24 interpreters who had been working with the Swedish army in Afghanistan. In this letter they requested asylum in Sweden after the year 2014, on the basis that their lives will be in danger from the Taliban since they have been cooperating with foreign troops. When Swedish forces will begin their withdrawal from Afghanistan the interpreters

Torture memo : en legitimering av tortyr som normaltillstånd

After 9/11 2001, the U.S. government proclaimed war on terror. In the purpose to prohibit future attacks on the U.S. and their civilian a secret work started at the Office of Legal Councile to define and guideline actions in the war of terror. The first memorandum is named The Bybee Torture Memo and started up an extensive activity to legitimize the use of torture against terror suspected. From se

In process cleaning of open devices during assembly

This is a master thesis about how to be able to clean an open device during assembly for the company of McNeil AB. McNeil AB is a company in Helsingborg, Sweden, producing the Nicorette brand, which is a nicotine based product line which helps people stop smoking. McNeil AB's problem was that they had some contamination in their mouth spray product and thus a solution for the cleaning of a via