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983 Uppsatser om Heat transfer - Sida 42 av 66
Interferences during analysis of polyphenols in fruit juices
One of the most commonly used methods for analysis of polyphenols is the Folin-Ciocalteu (FC) method, where the FC reagent has been reported to interfere with some substances in fruit juices. The interfering substance that is present in the highest amount in most fruit juices is ascorbic acid. In this study, the total phenolic content (TPC) of three fruit juices was analysed by the FC method as well as with an enzymatic method with hydrogen peroxide oxidoreductase type II (HRP) for comparison. To investigate how the interfering ascorbic acid affects the TPC, juice samples were analysed after removal and addition, respectively, of ascorbic acid. The samples were analysed with HPLC both before and after the extraction phase of the FC method.
INDUSTRIALISERING AV FLERBOSTADSHUS
The construction process which is used today while constructing residential buildings has for along time remained unchanged. Unfortunately the development process has gone away frombecoming industrialized and instead most of the work is done at the construction site. In thisrespect this is a worse alternative because the project outcome will be more expensive and theconstruction time will be longer. Skanska?s vision is to have a process which is more like the oneused in small residential buildings which is fully industrialized.The constructing process for residential building involves more parties and therefore it becomesmore complicated.
Att bygga kundrelationer med hjälp av communities
The advancements in digital technology and its availability contribute to the transfer of companycentricproduct development and value creation to networks or communities. It also changes the basisfor creation of customer relationships as described in previous research on Customer relationshipmanagement (CRM). The purpose of this case study was to gain an understanding of how companieslike our case study object Memoto who developed a physical product which gets added-value fromdigital product-related services looks upon product-centered communities as a way of buildingcustomer relationships. How Memoto looks upon incentives for participation in product-centeredcommunities was also examined.Our research indicated that firms in the start-up phase (which Memoto was when this study wasconducted) initially want to have more control over the process of innovation and hence have directcontact with end-customers. The reason for this is because they see a need to define the basis forfurther innovation work.
Kunskapsöverföring : från individ till organisation
Individers specifika, inneboende kunskap har kommit att bli ett allt viktigare redskap för att generera konkurrensfördelar i dagens föränderliga samhälle. Det ställer därmed krav på ledningen att kunna hantera organisationens komplexa tillgång och främja kunskapsöverföring mellan organisationsmedlemmarna genom tillämpliga processer. Lyckas detta, bevaras kunskapen inom organisationen.Syftet med studien är att skapa en ökad förståelse för ledningsdrivna processer och aktiviteter som avser att omvandla individbaserad kunskap till organisatorisk kunskap. Studien belyser ett antal olika kunskapsöverföringsprocesser som nyttjas av organisationer i praktiken. Face-to-face metoder har visat sig föredras vid överföring av kunskap särskilt den tysta kunskapen, medan de tekniska/virtuella verktygen anses vara till fördel vid informationsspridning. En central slutsats för studien är att en verbal tvåvägskommunikation, såsom fysiska möten och telefonkommunikation, är mest tillämplig vid förmedling av den tysta kunskapen.
Den kommunicerande forskaren : Forskares tankar kring och arbete med forskningskommunikation
As the western society gradually turns into a knowledge- and risk society, where science and scientific innovations increasingly both promise to save the world and destroy it, a shift in the relation between the scientific community and the rest of society has emerged. A shift from a top-down one-way transfer view regarding communication, to a dialogue-based interactive co-production model, where the public are part of setting the agenda for research and contribute to the knowledge production. Or at least in theory, in EU documents and in many different country's policy documents. In practical application however, one might have a hard time see the implementation of such model.As a more comprehensive and dialogue-based science communication is depending on the possibility for scientist themselves to engage and fell the need to engage, we have focused on their thoughts.In this thesis we have examined six scientists view on, and work with, science communication, as well as their perceived social and structural conditions. We have also examined action plans and strategy documents from three Swedish universities that in different ways mention science communication and interaction with the broader society.
Intra-individuell variabilitet i nära transfer : Om åldersrelaterade skillnader i intra-individuell variabilitet i prestation och effekten av kognitiv träning
Syftet med denna studie var att undersöka om träning av exekutiva funktioner kan påverka den intra-individuella variabiliteten (IIV) i reaktionstid hos unga vuxna och äldre. De 29 yngre och 30 äldre deltagarna i studien delades upp i två grupper, en träningsgrupp som gick igenom 15 sessioner av träning i exekutiv funktion och en kontrollgrupp som endast deltog vid pre- och posttestning. I träningsbatteriet tränades de exekutiva funktionerna uppdatering, skiftning och inhibering i enlighet med det teoretiska ramverk om exekutiv funktion som skapats av Miyake (2000). I studiens pre- och postmätningar användes reaktionstidsdata från tre tester: Serial Reaction Time (SRT), Flanker och Alternating Runs. Dessa tester skiljde sig från de som användes i träningsbatteriet.
Självförsörjande elgenerering : Kan Orust bli självförsörjande på förnybar el?
Orust Kretsloppsakademi is a nonprofit organisation, with a goal of annually generate the same amount of electrical energy that is consumed. Orust is an island on the west coast of Sweden, north of Gothenburg. The population of 15 000 reaches 40 000 during summer, due to the large amount of vacationer. The total electricity demand is 174 GWh a year with a maximum power need of 32 MW. This report presents an analysis for the plausibility of their plan and from a power system stability perspective, the effects on the electrical grid.The conclusion is that the restraints for development of power generation from wind, solar and wave generation, are the power systems capability to transfer power, primarily in the transformers of the grid.
Att testa kvalitet : En validerande informationsinsamlingsmetod för ökad kunskapsåterföring
This master thesis has been carried out at Scania R&D at the department for Powertrain Control System Development during the winter of 2010/2011. In the thesis the writer examine and evaluate the existing method for collecting information from the tests carried out during the development of the Powertrain Control Systems software. It also contains suggestions for how a new method that enhance the validation elements could look like.The master thesis uses Vicentes theories of the ecological approach and theories of how knowledge sharing of tacit and technical information works within an organization and between the organization and its customers. First a workplace analysis at Scania R&D is carried out to see how Powertrain Control Systems work and how they test their software. Second a control task analysis, where the aims decided on after the interviews, is compared to the existing method.
Förskolor med passivhusteknik : En utredning av passiva förskolor
As a result of directives from EU, with the ambition to reach environmetal goals, The German organisation Passivhaus Institut has defined a passive house. A passive house is a building that is very energy efficient and makes a small impact on the environment. The energy from the inhabitants as well as the appliances & fixtures in the building should equal the energy that is required to heat the building. A Swedish version of the passive house definition has been defined, taking into account the climate conditions and the difference in building regulations.This thesis is a request from Skanska on how it can improve and develop an ongoing passive house project, involving an infant school. The intention of this thesis is to identify difficulties & display potential development areas for infant schools.The method of research conducted is as follows: interviews of clients, ventilation consultant, consultant for heating system and an energy calculation consultant, an inspection of the infant shcool in process, investigation of completed infant schools and a study of relevant literature.From this research it was found that it is difficult for infant schools to pass the criteria for passive houses. The conclusion of this thesis provide several guidelines on how to improve the outcome of existing projects & the steps needed to be taken for future development in this area..
Internprissättningens dokumentationskrav : Ur ett konstitutionellt perspektiv
Studiens syfte var att undersöka hur män från Mellanöstern uppfattar hedersrelaterat våld och förtryck samt att se om ett hederstänkande hos individer från Mellanöstern förändras efter att ha flyttat till Sverige. En kvalitativ studie har genomförts i form av fem semistrukturerade intervjuer med unga män från Mellanöstern. Studiens resultat visar att majoriteten av respondenterna har en negativ syn på förekomsten av hedersrelaterat våld och förtryck, där kvinnor exempelvis ses som mindre värdiga. Förekomsten av hedersrelaterat våld och förtryck grundar sig, utöver makt- och kulturperspektivet, i det intersektionella perspektivet där makt, kön, klass och etnicitet har en påverkande roll. När familjer från en hederskultur bosätter sig i Sverige kan ett hederstänkande förstärkas hos dem men det finns även möjlighet till en förändring där hederstänkandet försvagas eller försvinner helt.
Effektivisering av lagringsplatser. Ett förbättringsprojekt på Mekpart AB
Aeroseum is an aviation museum located in an old military underground hangar. The ventilation system in the hangar is designed for the military purpose of the hangar. This design includes a solution with air flowing through the space between the construction of the hangar and the rock surface. The solution is intended to avoid a buildup of inflammable gases. This design leads too high humidity levels in the hangar.
Aktieägaravtalets giltighet mot tredje man : Kan laganalogi göras mot sakrätt och skiljeavtal vid partssuccession?
Trots principen om avtalets subjektiva begränsning kan det finnas skäl till att utöka ett aktieägaravtals verkningar mot förvärvande tredje man för att skydda beaktansvärda intressen. Då rättsläget är oklart är det av intresse att undersöka huruvida en tolkning med laganalogins hjälp mot sakrättens samt skiljerättens område kan klargöra rättsläget.För att ge läsaren tillräcklig bakgrund för analysen beskrivs rättsläget vad gäller aktieägaravtal och de bakomliggande teorierna rörande den analogiska tillämpningen. Därefter analyseras undantag till avtalets subjektiva begränsning, varefter en diskussion följer där frågan huruvida analogier kan dras besvaras.Resultatet av denna framställning är att en analogisk tillämpning kan göras mot de två undersökta rättsområdena, dock endast i begränsad utsträckning vad gäller skiljerättens område. En kombinerad applicering av möjliga analogier från sakrättens och skiljerättens områden på aktieägaravtal leder till ett resultat där aktieägaravtalets bundenhet mot både förvärvande tredje man samt kvarstående parter klargörs..
Analys av spänningsstabilitetsberäkningar i det svenska elsystemet
Numerical simulations play a vital role in both static and dynamic stability assessment of electric power systems and the foreseeing of voltage collapse. Simulations performed by Svenska Kraftnät(SvK) are mainly done in the specialized voltage collapse predicting software tool, SPICA and the more all?purpose software tool, ARISTO.The grid operators at SvK use SPICA to predict the maximum transfer limit at specified sections (in this report the section in concerns is the southern part of Sweden i.e. interface1 4). SPICA is mainly used as an online application by using actual states from the grid, these states update every quarter of an hour.This thesis is a continuation of the master thesis SPICA ? ARISTO JÄMFÖRELSE by Jakob Katzman and Johan Fält.
Fysträning för ishockeyspelare
To become a successful athlete requires several different components in which one of themost significant is the ability to develop their own physical strenght. What weight exercises has the best transfer effects for skating?Participants in the study were 20 male senior hockey players from Div. II in the Västra Gö- talands Regionen in which all participants had at least 10 years of hockey experience.Test subjects had to perform a five-minute individual warm up followed by an opportunity to familiarize with the upcoming exercise. The first on-ice test was a 35 meters sprint test and the second test was an S-cornering agility test.
Biogas : En systemanalys av Solna Stads matavfallsprocess
Global warming is a huge issue that humans have contributed to through over-exploitation of natural resources and extensive usage of fossil fuels. Now more than ever, we need to embrace a recycle thinking and reuse our waste, for example through producing biogas from our food waste. The purpose of this report was therefore to identify the energy usage and emissions resulting from the biogas chain which spans from Solna Stad to Uppsala Vatten. Furthermore, potential efficiency improvements were to be identified and proposed. This report focused mainly on the first part of the biogas chain that includes the collection of the food waste and the reloading process.