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1552 Uppsatser om Drag reduction - Sida 16 av 104

Ställtidsreducering med hjälp av SMED i pressgjuterianläggningar

To maintain production in high salaries countries and strength in competition against other companies, it is today more important than ever to maximize production, offer a wide spectra of products and be able to deliver on the customers desire of shorter and shorter delivery time. Flexible production and short time spent on die changes is vital to achieve these desires. The interest for die changeover time reduction grew in the same pace as the demand for increased product variety grew. SMED as a method of reducing time spent on die changeovers were developed in between 1950-1970, by the Japanese Shigeo Shingo.The purpose of this thesis work has been to investigate the result of SMED in a die casting facility, and compare the result from it with the result considering time spent on die changeovers when investing in new equipment. The goal is to implement a thorough investigation by using the SMED method at Tenhults Pressgjuteri AB and make a brochure that have to be simple to understand, in purpose to draw interest to the advantages of using SMED as a method.Commissioned by the Swedish foundry association Swecast, the work has been carried out by studying die changeovers at Tenhults Pressgjuteri AB, where filming and interviews with the operators have been included in the analysis.

Energieffektivitet och kvalitet på inomhusluft i radon förorenade bostadshus

To build a sustainable future should we first understand that; every aspect of our daily lives can affect the environment. It?s important that we take responsibility for understanding how we impact the environment and change our actions accordingly. The worlds total energy consumption equivalent to 80 million MWh / year. This corresponds to about 220 million MWh / day.Energy consumption is one of the main reasons for increased greenhouse gases when the reduction of this consumption has a great demand worldwide.In order to prevent the energy that consumed the buildings must be energy efficient but there is a conflict between radon ventilation and energy conservation in a building, given that ventilation can consume as much energy (currently 29-59% of energy-efficient houses use), especially in a cold climate as in Norway.

OMBYGGNAD AV TRAFIKPLATS : Ekhagsmotet i Jönköping

We have the tradition in Sweden to build villas and houses with a wooden framework. It has become natural for us because we have so much forest in our country. Building with wood has advantages, it is easy to process, but also disadvantages, as it is sensitive to moisture.Finland has long made use of the thermal blocks to build villas. It is a type of bricks that are a bit like a sandwich element, with a core of EPS and concrete on both sides of the core material. The concrete is hollow, so that after the walls has been bricked up you pour concrete into the hollow bricks.The issue of this report is to find out if concrete can be an alternative to wood as framework material in villas.

"Ja, Slösa för 'skönheten' lida får!" En diskursanalys av Lyckoslantens omslagsbilder samt Spara och Slösa, år 1939-1945

Studien undersöker barntidningen Lyckoslantens visuella representationer, med ett fokus på serien Spara och Slösa samt omslagsbilderna. Åren mellan 1939 och 1945 granskas med hänsyn till det pågående kriget i Europa för att söka synliggöra symboler för kriget. Symbolerna visar sig vara nästintill obefintliga och bidrar till den idylliserade värld som gestaltas. Studiens huvudsakliga syfte är att diskursanalytiskt ringa in det specifika bildspråk som används för att uppmuntra barn till sparsamhet. Genom bildernas uttryck och vidare betydelser diskuteras framträdande ideal utifrån analytiska kategorier som genus, klass och etnicitet. Teman som återkommer i de båda bildtyperna och som knyts till en allmän sparandediskurs är mode och skönhet, idrott och hälsa, föreningsliv, flit och arbete, nöjen samt natur.

Stommaterial för villor - trä eller betong?

We have the tradition in Sweden to build villas and houses with a wooden framework. It has become natural for us because we have so much forest in our country. Building with wood has advantages, it is easy to process, but also disadvantages, as it is sensitive to moisture.Finland has long made use of the thermal blocks to build villas. It is a type of bricks that are a bit like a sandwich element, with a core of EPS and concrete on both sides of the core material. The concrete is hollow, so that after the walls has been bricked up you pour concrete into the hollow bricks.The issue of this report is to find out if concrete can be an alternative to wood as framework material in villas.

Välfärdseffekter av ett frihandelsavtal : en ekonomisk analys av ett EPA-avtal mellan EU och ESA

The EU has had a special agreement with their former colonies in Africa, the Caribbean and the Pacific Islands, the ACP-countries, for almost 30 years. This has granted the ACPs with preferences on the Europen market, which have been excluded from other countries. The agreement is now beeing re-negotiated to make it more in terms with the rule of the WTO?s most favoured nation-principle. The new agreement will differ from the present one as it will be a mutual free trade agreement where the ACP countries will open their markets to the EU as much as the EU opens up it?s market to them.

CARABAS III Konstruktion av antenninstallation på helikopter

This report describes the construction work of a radar antenna for the radar systemCARABAS. CARABAS is a long wave airborne ground radar that has been developed bySAAB Microwave Systems and will now be mounted on a small helicopter, Schweizer 300.The antenna should be able to fold up and down. When the radar is in use the antenna islowered and under transport, start and landing the antenna is folded up. An emergency dropfunction should also be included in the design of CARABAS III.The extent of this report includes construction of the antenna, frame structure attached to thehelicopter, mechanism for folding the antenna up and down and mechanism for emergencydrop function. The mechanical design of the antenna and frame structure is based on modaland stress analysis, vibration measurement of Schweizer 300 and frequency analysis, andcalculations regarding aerodynamic drag and mechanics.The exciting frequencies of the helicopter and accelerations at those frequencies weredetermined by vibration measurement and frequency analysis.

Vätning på mikroskala

Individual cellulose ?bers were studied to identify the transport and absorbtion phenomena as well as the in?uence of drying. A Chalmers University of Technologydeveloped method within ESEM (Enviromental Scanning Electron Microscope) has been used in this study. The results from the laborations gave the following conclu-sions: The transport of water occurs in ?bers in the ?ber wall surface and the lumen.

Prestanda på luftfilter : En jämförelse mellan olika filter till bil

This reports goal is the give BSR AB more information that's useful towards their customers in marketing of their products.It involves tests of different air filters designed for cars and 3D-modelling of Opti-Flow systems. The three models thats being tested is SAAB (93SS), VAG (1.8T) and Volvo (S60). To every brand there are three different models. A orginal- , sport- and an open cone air filter (Opti-Flow).The results indicate that the open Opti-Flow filter has better performance compared to the other cased filters. The sport filters for SAAB and Volvo has better performance then the original filter.

Påverkar kaffekonsumtion risken för stroke?

Sahlgrenska Academy at University of GothenburgDepartment of Department of Internal Medicine and Clinical NutritionAbstractTitle: Does coffee consumption affect the risk of stroke?Author: Jenny KällSupervisor: Heléne Bertéus ForslundExaminer: Anna WinkvistProgramme: Dietician study programme, 180/240 ECTSType of paper: Examination paper, 15 hpDate: May 22, 2012___________________________________________________________________________Background: The widespread consumption of coffee worldwide makes this drink interesting to study from a public health perspective. Even minor health effects may be important for the whole population. Stroke patients require the largest number of days spent in hospitals and nursing homes than any other medical condition group. Risk factors for stroke include smoking, high alcohol intake, physical inactivity, hypertension, hypercholesterolemia, high waist-hip ratio and diabetes.

"Forty is the new twenty" : En analys av representationen av kvinnor i TV-serien Cougar Town

Populärkulturella fenomen når ut till ett stort antal människor och representationen av olikasaker blir således viktig eftersom det kan avspegla hur människor uppfattarolika ting. Syftet med min uppsats är att undersöka representationen av de trekvinnliga karaktärerna, Jules, Ellie och Laurie, i tv-serien Cougar Town. De teoretiska begreppsom står till grund för min analys är bland annat, representation somdefinieras i boken Genus, medier ochmasskultur skriven av Linda Fagerström och Maria Nilson och som AnjaHirdman också behandlar i sin avhandling Tilltalandebilder. Vidare har jag använt mig av begreppet postfeminism som både Karen Boyle (Massmedia and Society, 2005)och Karen Ross (Gendered Media, 2010) skriver om i sina böcker.För att undersökarepresentationen av de olika kvinnliga karaktärerna i tv-serien använder jagmig av Keith Selby och Ron Cowderys bok Howto study television. I deras bok finns olika steg att gå igenom för attkritiskt granska television, jag har vidare valt att fokusera på den narrativaoch konstruktionsanalysen med fokus på mise-enscène och den icke verbala kommunikationen samt klädkoderna.

Värdeflödesanalys och förbättringsförslag på Pallco AB : Value stream mapping and improvement proposal at Pallco AB

This report is a study made at Pallco AB. Pallco is a subcontractor that is specialized on steel and aluminium components.The aim of the report is to show an improvement proposal that leads to a reduction of the storage and improve the flow through the production of one item that is a part of a product that Pallco manufactures.With the increasing competition from other countries who can manufacture with lower costs must Swedish companies try to make theirs manufacturing as efficient as possible and remove all waste. By using the tools of Lean Production it is possible to reduce the costs and increase the efficiency.The method we used is value stream mapping. A map of the present condition has been made and then different improvement proposal were discussed. A map of a future condition has also been designed..

Webbsökning: En genväg till ett idiomatiskt språkbruk för främmandespråksinlärare?

Spra?kbruk inneha?ller till stor del konventionaliserade spra?kliga mo?nster. Det kan handla om specifika ord, mer eller mindre fasta eller kompositionella flerordsenheter, hela yttranden eller grammatiska strukturer. En god ka?nnedom av dessa spra?kliga mo?nster ho?jer graden av idiomaticitet i spra?kanva?ndningen.

?Roll up! Roll up for The Magical Mystery Tour!? : om upplevelseindustrin i The Beatles Liverpool

During the 19th centaury Liverpool was an industrial city of great magnitude owing to the well-established communication and infrastructure in the area. During the 1950?s the industry decrease swiftly - and although Liverpool as a city gain interest as a result of the sensation of the Merseybeat and The Beatles - the reduction continued through the 70?s and during the 80?s the people of Liverpool suffered from great unemployment. Today Liverpool is a post-industrial city with a growing experience economy that mainly benefits from The Beatles tourism and the Merseybeat-era. The focus of these studies is the experience economy in Liverpool as a result of globalization and production in the late modernity.

Turbuhaler - Kvalitetskontroll : En kvalitativ studie av årets Leanpristagare

Problem: How is Lean, a production-focused model being applied to non-productive focused industries.Purpose: To examine how Lean has been applied to the department of Turbuhaler-Kvalitetskontroll and which parts have been successfully applied.Problem statement: How does the implementation of Lean?s basic concept, which originated in the car industry, differentiate itself from the implementation of Lean in the pharmaceutical industry, in this case the department of Turbuhaler-Kvalitetskontroll at AstraZeneca.Conclusions: The department has had success in its implementation of lean. They have developed and modified the basic concept in order to apply it and excluded the parts they did not consider necessary. Through their work they have accomplished numerous improvements in, among other things, the reduction of lead time. .

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