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4565 Uppsatser om Production technology - Sida 44 av 305
Solceller ? Solen är ju gratis! : En undersökning av huruvida solceller är ett fördelaktigt energisystem med avseende på tekniska och ekonomiska aspekter
This report is a result of a bachelor thesis at the school of Architecture and the Built environment (corresponding to 15 HP) and is written during spring 2012 at the Royal Institute of Technology (KTH) in Stockholm. The Bachelor's essay is based on the design and dimensioning of a house which is located at a predetermined site in Malmo, Sweden.The idea is to construct a house that is appropriate to use for an average Swedish family of four family members. The house is designed in a modern way with respect to ease of access and disabled facilities. The installation that have been considered are heating, ventilation, sanitation and electricity. Construction calculations and material selection are also discussed.Furthermore, a study about photovoltaic cells has been done.
Optimering av SNCR-system i en biobränsleeldad panna : möjligheter till minskade NOx-utsläpp för ENA Energi
Emission of nitrogen oxides as well as carbon monoxides is an inevitable result of combustion. A Swedish law "Law of environmental fee for emissions of nitrogen oxides as a result of energy production" (lagen om miljöavgift på utsläpp av kväveoxider vid energiproduktion (SFS 1990:613)) controls the emission of NOx from energy production by a system of fees. The system has resulted in a strong approach toward less emissions of NOx among the energy production plants. High emission levels, today exceeding 52 mg/MJsupplied fuel, leads to costs for energy production companies. This paper examines possibilities to reduce the emissions of NOx by optimization of the SNCR-technique in a biofuel fired heat and power plant.
Brikettillverkning på gårdsnivå :
In my work I have chosen to examine the profitability for small scale production of hemp briquettes. My study also includes a review of which briquette technique that is the most common one among small scale producers. The reason that I have chosen this subject is because of the discussions about climate and energy that we face almost every day. I also think the subject is extra interesting in these days when the grain prizes are at a historic high level.
In order for me to achieve a reliable report, a hemp and briquette producer has given me the actual data from his farm. In that way I have been able to make my calculations from a concrete perspective.
Aktiv bullerdämpning i ventilationssystem
Active headsets have been on the market for years and now it is time for something else to enter the stage. The technology of active noise reduction can for exmple also be used in ventilation systems for reducing ventilation noise. An active control system principally consists of four important components, namely the downstream error microphone, the upstream detection or reference microphone, the digital signal processor (DSP) and a loudspeaker. The upstream reference microphone listen to the primary ventilation noise and sends it to the DSP which makes a phase shift to the signal and sends it to the loudspeaker. The loudspeaker sends out the opposite waveform of the incoming one and reduce the primary ventilation noise.
Ekonomi i vallfrödominerad växtföljd :
This is a project about how you grow timothy seed and red clover seed successfully. The main part is about economic analyse to see if it is any economy by growing leyseed.
There are lots of things to be aware of to get all the costs in your economic analyze.
Timothy
Timothy seed is planted on 4400 hectares in Sweden. It is possible to grow timothy seed in the south part of Sweden. Timothy is very sensitive for dry weather in spring and in the beginning to summer. Timothy gives acceptable harvest of seed for about three years.
Red clover
Red clover is also sensitive for dry weather and is suitable to grow in the south part of Sweden.
Moduluppbyggnad av ramstyrda dumprar ur ett produktionsperspektiv ? Volvo CE AB i Braås
Denna rapport i form av examensarbete för utbildningsprogrammet Managing Technology and Business Projects, är en del i Volvos framtida produktions-/ produktstrategier.Uppsatsens syfte är att ur ett produktionsperspektiv understödja Volvo Construction Equipment i Braås i strävan mot en ökad modulindelning av ramstyrda dumprar, som en del i utvecklingsarbetet för en effektivare produktion. Resultat har uppnåtts genom analys av intern och extern benchmarking jämfört med den teori som finns inom ämnesområdet modulindelning. Huvudresultatet visar att teorin och verkligheten skiljer sig genom att modulindelning ska anpassas individuellt utifrån varje företag och inte fungerar som en generellt applicerbar process. Slutsatsen visar att Volvo CE i Braås måste utveckla en egen handlingsplan och kravspecifikation utifrån egna definitioner som är skräddarsydda specifikt för företaget.I rapporten presenteras förslag till ovanstående handlingsplan för modulindelning på Volvo CE i Braås..
Från vilda till domesticerade djur - kan man gå ett steg längre?
Domestication has resulted in the ability for animals to adapt to environments created by the human over time. The behavior differs very little between wild and domesticated animals, but the difference seen is how often and to what degree a behavior is performed. The need for efficiency in modern animal production has led to welfare problems in the productionsystems where the animals have difficulties coping with their environment. Attempts to environmentally adapt individuals by selection for reduced frequency of natural behaviours have been made. These have shown that natural behaviours are complex and are controlled by several different mechanisms, making selection for reduced natural behavior difficult, and it may also lead to unwanted and abnormal behaviours.
Vad påverkar fjärrvärmepriser i Sverige?: En ekonometrisk analys
The purpose with this thesis is to analyse different factors that can explain district heating prices for energy companies in Sweden. We are further interested in examining if the prices is affected by the use of industrial waste heat in their production and the company?s ownership structure. The method applied is a multiple regression analysis using a panel data set of 50 companies over 5 years (2008-2012). The data used is yearly data obtained from the Swedish district heating association.
Teknik och teknisk kompetens enligt förskolans pedagoger : En studie av pedagogernas syn på teknik
System Andersson AB is a company located in Jönköping that works with developing computer systems for the mechanical engineering industry. As of today, when this report is written, the company is working on the development of a new Manufacturing Planning and Control (MPC) system. This new system aims to create not only a user friendly interface but also a modern, stylish interface. To achieve this, the company has decided to work with a, for them, new application framework; Windows Presentation Foundation (WPF).System Andersson is well known for developing systems for different kinds of touch screens, this project is no exception. For this new user interface the company wishes to implement different types of Drag&Drop functionality.
Intern materialhanteringsutveckling på Kongsberg Automotive AB
This examination report is a part of a program for Industrial organisation and Economics with specialization in Logistics and Management at Jönköping University. The report contains an analysis of the internal material handling at Kongsberg Automotive, and also an improvement proposal for a new material handling system.The aim with the report is to find a better material handling system and also make an analyse of the existing system. The goal is to shorten the distance for the operators when they order material, and also to increase the productivity.The investigation methods for the report have for the most part consisted of observations and interviews of key-persons who daily work in the production. During some time the actual material handling-system has been observed and some shortcomings have been discovered, and these are also discussed in the report.The shortcomings that have been discovered are for once the indistinct signal that should signal need of material in the production. Some other activities have also been discovered that does not bring any value into the final products.
Svenska kyrkan i kris : Sambandet mellan demografi och Svenska kyrkans medlemsandel
Our aim in this work has been to redesign ModernFamilies and make a user-friendly interface for people with aphasia. The focus has been to identify general issues they might face while using different technology and applications, in order to find better alternative design for ModernFamilies, with a focus on usability. To approach this issue, we used a qualitative method. Our study includes several interviews and observations preformed in conjunction with the AGNES project (AGeing in a NEtworked Society) and speech therapists. Aphasia requires simple design that in the same time gives them support to understand and use technology and different applications.
Audio Identity - En studie i ljudets funktion för varumärkesbyggande
Abstrakt
Sound branding är i dag ett begrepp som är välkänt bland marknadsförare.
Fördelarna med en unik och genomarbetad ljudidentitet har dock inte nått fram
till många svenska företag och varumärken. Vi ämnar med detta kandidatarbete
att utforska ljudets funktion för varumärkesbyggande samt skapa förståelse för
vilka faktorer som är avgörande gällande ljuddesignen i reklamsammanhang. Genom
tidigare forskning samt produktion av sonic logos och musik, åt olika
beställare, har vi försökt besvara frågeställningen: Hur ger man verksamheter
och varumärken en ljudidentitet?
Abstract
Sound branding today, is a well-known concept amongst marketers.
Dexametasons effekt på trombocytaggregering och syreradikalproduktion
Platelets are important for the healing of damaged blood vessels since they have an importantpart to play in the coagulation process. At the same time, the blood must be kept fluid and notcoagulate at the wrong time. Therefore there are factors that effect the aggregation of plateletsin a positive or a negative way.Previous investigations have shown that platelets during stirring conditions produce reactiveoxygen species (ROS) that weaken the inhibiting effect of nitric oxides (NO) on platelets andthat the drug Dexamethasone (Dex) can reduce the ROS-production.The aim of this project was to investigate if glucocorticoids, in this case Dexamethasone,could restore the inhibiting effect of NO on platelets and if there was any decrease in ROS-production.The result of the ROS-measurements showed a great variance and it was difficult to draw anyconclusions from them, but a clear decrease in ROS, as previous reported, was not shown. In the aggregation experiments the inhibiting effect of NO was observed through the drug S-nitroso-N-acetylpenicillamine (SNAP), a NO-donator.From the aggregation experiments, the result seemed to be that SNAP during longerincubation time lost its inhibiting effect, probably because the cells become desensitized.With superoxid dismutase (SOD), the effect of SNAP increased, both in the experiment withlonger and shorter incubation times. Dex seemed to reinforce the aggregation in relation toboth SOD and SNAP.
Beräkningsmodul för ett förbättrat offertförfarande och minskad icke-värdeskapande tid
In early January 2010 the authors participated in a meeting with the chief engineer for a company in which a central part is manufacturing of printed circuit boards (PCB). At this meeting it emerged that the machinery and production methods have changed substantially since the early 1990's. The spreadsheet for preliminary production time calculations by the company is today based on conditions from almost 20 years ago. The company has over the years been trying to adjust the spreadsheet template. The result of these adjustments has filled it with historical residue, something which makes the template difficult and time consuming when the primary user tries to handle it.The purpose of this study was to help the company increase its accuracy in the representation of the production times for the different PCB-based products by developing a new costing model based on an already existing but inadequate spreadsheet template. The company also expressed the wish that the new costing model would be less time consuming to work with.The methods used to achieve the goal are interviewing, participatory observations and meetings with relevant persons. The data obtained were analyzed using the theory on PCB production and visualization of data.
"Det första jag gör när jag vaknar är att logga in på Facebook" : En studie om hur användare av de sociala nätverken upplever den användargenererade produktionen
AbstractTitle: The first thing I do when I wake up is to log on to Facebook. A study regarding how users of Social Networks experiences the User Generated production. (Det första jag gör när jag vaknar är att logga in på Facebook. En studie om hur användare av de sociala nätverken upplever den användargenererande produktionen.)Number of pages: 37 (39 including enclosures) Author: Per MagnussonTutor: Christian ChristensenCourse: Media and Communication Studies CPeriod: Fall semester 2010University: Division of Media and Communication, Department of Information Science, Uppsala UniversityAim: The ambition with this essay is to examine how the online users of social networks experience the development of the Internet towards Web 2.0, and the enormous User Generated Content emerging from it. How do we receive User Generated Content from other people, and particularly what do we think about our own production.Material/Method: In order to obtain a deeper understanding of the attitudes and perceptions amongst people regarding this subject I used qualitative interviews with 9 people.