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2129 Uppsatser om Mechanical construction - Sida 61 av 142
Konstruktion av styrelektronik till testfixtur
The focus of this thesis is primarily in electronic construction and describes the design process for a microcontroller circuit board from concept development to prototyping. The client develops test fixtures for automated testing of products within the electronics industry and needs a new controller circuit for the test fixtures that can handle controls and basic testing. An investigation into the needs of such a system is conducted and a prototype printed circuit board assembly is manufactured.The prototype is developed with focus on protection against electrostatic discharges and overvoltage. Among the functions that are included are voltage measurements, communication interfaces and control of input and output currents. Firmware for the prototype is developed and configured to communicate with a PC through USB interface for control and collecting of measurements..
Alice Springs drivet av solenergi - En jämförelse mellan solceller och Stirlingsystem
In the middle of Australia there is a city called Alice Springs. The city has one of the highest amounts of daily sunshine hours and sun irradiation in the world. The Australian Government runs a project called Solar Cities, and Alice Springs is one of the participators. The main part of the goal with the Solar Cities project is to increase the amount of electricity generated by solar power and by doing that lower the impact on the environment. This thesis examines the possibilities for construction of a large scale solar power plant in Alice Springs. This is done to determine the potential of creating a more sustainable energy system in the city.
Underhållskoncept : tillståndsbaserat underhåll på smörj- och hydrauloljesystem
AbstractThis report describes our ten week long thesis work which is the last task in our education in mechanical engineering at Linköpings University. The project has been performed at Siemens Industrial Turbomachinery AB?s service department. The company which is located in Finspång produces, sells and provides service for steam and gas turbines around the world.The purpose of this project is to help Siemens develop their maintenance programs for two of the auxiliary systems which are a part of the complete steam turbine system. These are lube and control oil systems.The project is restricted to two of Siemens maintenance products, No Stop Check (NSC) and the annual Safety Inspection (SI).
Varför finns det soffor i biblioteket? Ett rumsligt perspektiv på barnbibliotekslokaler i Sverige.
The purpose of this study is to examine the physical space of children?s libraries in Sweden, and also to see which influences there are in the literature about the same subject. What ideas exist in the literature about the physical room of children?s libraries? We have studied how and if these influences can be seen in a selected number of children?s libraries. Our theoretical perspective is based on Anthony Gidden?s theory of construction.
Prefixet "B?-" och dess svenska motsvarigheter. En jämförelse av prefixet "B?-" och partikeln "ut"
The aim of this text is to compare the semantic profile of the Russian prefix B?- with that of the Swedish particle "ut". It follows Janda's categorization of Russian B?-verbs into semantic groups and compares Swedish phrasal verbs with the particle "ut" to the semantics of the Russian prefix B?-. The material consists of Russian B?-verbs and their Swedish translations retrieved from Norstedts ryska ordbok.
Tillämpning av nya beräkningsmetoder för branddimensionering av träkonstruktioner - analyser och jämförelser
To build high-rise buildings made of timber has for long been limited by national laws, due to the lack of knowledge in engineering solutions. Frame structures made of wood has for a long time been associated with major fire hazards and consequently lower safety and this connection is still being made today. The increased environmental awareness in recent years has contributed to the exploitation of indigenous building materials, including wood from our own Swedish forests and has become increasingly common. Increased knowledge about how structures behave in fire and how they can be protected in order to achieve safe timber structures has resulted in a growing interest in these structures in the construction industry. Research in the area is constantly updated and new laws allow any number of storeys in wooden buildings in Sweden as long as the performance requirements are fulfilled.The main part of this work has involved calculations of the fire resistance and load bearing capacity of floor and wall constructions.
Soundclash Sverige : Reggaemusik, mångkultur och förhandling
Soundclash is a phenomenon where groups within the culture of reggae music ?battle? against each other, through strategies including both music and rhetoric. The social interaction in the clash exemplifies the scene hierarchy, in which the participants aim to position themselves as number one. This study includes empirical material from a competition within the Swedish scene, also distributed digitally via Internet sites. The analysis is based on discursive psychology, focusing on rhetoric and the construction of meaning.
Föräldrarnas uppfattning av barnets vård vid leukemi
AimThe specific questions in the theoretic part were:What is contained in the terms "balance and balance skill" and how can this skill be measured?The specific questions in the empirical part were:How does balance skill in different age categories of children correlate with biological and physiological parameters such as age, gender, body height, weight and level of physical activity?MethodsLiterature search based on books and scientific papers related to the questions posed above. Selection was made at libraries and on?line through "Pubmed". Specific search words were used.
Sjuksköterskans roll vid urträning av den respiratorbehandlade patienten på IVA
Medicinsk och vårdvetenskaplig forskning som behandlar urträning ur respirator syftar på urträningsmetoder och tekniker för att minska vårdtid, komplikationer och sänka vårdkostnader inom intensivvården. Det finns vårdvetenskaplig litteratur som menar att sjuksköterskan kan spela en betydande roll i detta genom sin kunskap om och närvaro till intensivvårdspatienten. Syftet med detta arbete var att belysa sjuksköterskans roll
avseende urträning av patienter som respiratorvårdas på IVA. Resultatet baseras på en litteraturstudie av tio vetenskapliga artiklar. Sjuksköterskans roller kan sammanfattas i fem områden: kommunikationen med patienten, att lära känna patienten, samarbete i personalgruppen, erfarenhet och teknisk kunskap, kliniskt arbete och utveckling.
Utveckling av personlyft till badkar
This thesis is performed as a summarizing project for the mechanical engineering education at School of Engineering in Jönköping. All knowledge necessary to complete this thesis was gathered from previous courses and education.This project was to develop a new product for the company TR Equipment AB in Tranås. The new product is going to be based on an already existing product, TR 1700. TR 1700 is a bathtub equipped with a height adjustable function. This product is used in retirement homes and in the care of disabled people.
Vägen till produktionsanpassade arbetsinstruktioner
The purpose of this thesis was to investigate the need of working instructions in Derome Träteknik ?s industrial house-building factories. Furthermore we wanted to determine an appropriate way for developing working instructions adapted to the conditions in a certain production environment. In the construction industry today prefabricated building elements are frequently used. With this come repetitive work tasks that need to be carefully planned.
Kapacitetsinvestering i kopplingsaxeltillverkningen på Volvo
CE
Examensarbetet har utförts på Volvo Construction Equipment AB Component Division i Eskilstuna. Företaget tillverkar drilvlinekomponenter till bland annat hjullastare och ramstyrda dumpers. Företaget befinner sig i en expanderande fas med ökande volymer och på vissa håll har taket för bearbetningen nåtts. Kopplingsaxeltillverkningen är en flaskhals i företaget och behöver ses över för att möta de ökande volymerna. Uppgiften har bestått av att utforma en ny layout till bearbetningsgruppen för kopplingsaxlar.
Myten om jämställdhet : En kvalitativ studie om hur det svenska rättsväsendet befäster en ojämlikhet mellan könen
The purpose of this paper is to examine the law regarding gross violations of women and its application in the Swedish legal system. We have investigated how the legal system takes into account a holistic perspective of the vulnerable situation of women in the investigation and assessment and the extent to which psychological violence in the form of verbal abuse, threats and harassment attention. We also wanted to find out how the law's design may contribute to difficulties in the implementation and interpretation of it. In this study, we used a qualitative research approach when we decided to conduct an interview with a police officer and a textual analysis of four cases from the district court. Interview questions were semi-structured in order to gain a deeper understanding of the phenomenon.
Inköpsbeteende på byggarbetsplatsen: en studie av NCCs
projektinköp med ramavtal
Byggbranschen i Sverige idag lider av alltför höga byggkostnader. Kostnaden för byggmaterial stiger fortare än både lönehöjningarna och konsumentprisindex. Detta problem har NCC uppmärksammat och de har satt upp ett mål som går ut på att varje år fram till år 2012 sänka produktionskostnaderna med 5 %. En stor del av produktionskostnaderna är inköpsrelaterade och stora resurser läggs på besparingar i inköpsarbetet för att nå detta mål. Detta examensarbete fokuserar på inköpsarbetet på NCCs byggarbetsplatser och på hanteringen av tre av de största ramavtalen som NCC knutit med leverantörer av förnödenheter och byggmaterial: Ahlsell AB, Beijer Byggmaterial AB samt Ramirent AB.
Vinterträdgårdar ur ett byggperspektiv : En undersökning om byggandet av vinterträdgårdar
The purpose of this of this essay is to explore the construction of a conservatory that is livable allyear around. When you build a conservatory there are several factors that need to be regardedthat usually are of no importance when you build a regular conservatory. The glassed facadeneeds to have a very good U-value and all the parts of the facade need to be isolated and theconstruction needs to prevent thermal bridges.In this essay we will start by looking at the shape of the conservatory. Due to the façade consistsof glass the conservatory will need to have a good ratio between the area and the façade so thatthe heat losses will be at a minimum. However, due to the fact that one of the sides of the façadeis connected to the warm house, you quickly realize that the shape of the conservatory is of noimportance.There are two common ways to build a foundation for a conservatory, a molded concretefoundation and isolated wooden beams.