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628 Uppsatser om Non destructive testing - Sida 8 av 42
Tubular polyethylene biogas digesters : development and testing of a biogas technology in Malawi to reduce deforestation and support climate change mitigation and adaptation
The aim of the study was to install a biogas system consisting of three tubular polyethylene biogas
digesters at a rural household in Malawi and to evaluate the constructed biogas system with regards
to relevant system parameters. The purpose was to evaluate if the technology is a possible solution
to reduce deforestation and support Malawi in climate change mitigation and adaptation.
The study was carried out in the southern part of Malawi in cooperation with the University of Malawi. Locally available materials were used to construct and install the system. Three different feed materials, cow, goat and a mix of cow and goat manure, were used in order to determine
which one was best suited to utilise as a digester substrate. After the installation, measurements of
temperature, pH, biogas production, biogas composition and system functionality were made.
The results of the study show that a biogas system with tubular polyethylene biogas digesters can be successfully installed at a rural household and that the most suitable feed material is a mix of cow and goat manure.
Blockbaserad provning : Utveckling av en ny testrigg för utloppsmodulen
Alfa Laval?s strategy is to focus on modularized product platforms. Several benefits areforeseen, reduced lead-time, less costs, shorter Time To Market and better quality.Development and verifying will be carried out on block level. Today the separators arebeing tested as a complete unit. A number of factors affect the test results and problemsthat are encountered can be hard to identify.
Undersökning och framtagning av ett moduluppbyggt datainsamlingssystem
This report is about a thesis that is performed in and for SYSteam Engineering AB in Motala. The thesis work is divided into three parts, study of the market, programming and electronics. The study part consists of examining and comparing different data acquisition systems for testing of different circuit boards, taking into account the modularity, real-time applications, mobility, environmental, interface hardware and software, to be able to define a general module-based data acquisition system in both hardware and software that enables for future developments.The programming part consists of getting started with Visual Studio, which integrates the Measurement Studio for C#. NET. Measurement Studio includes classes and user controls for testing and measuring and offers tools for acquisition, analysis and presentation of real world data.
Kvinnors upplevelser av anorexia nervosa : En systematisk litteraturstudie
Background: Anorexia Nervosa (AN) is a complex condition with high mortality. AN has increased within the last fifty years and it?s associated with considerable suffering.Aim: To describe women?s experiences of AN.Method: This study was made as a systematic literature review. Articles were searched in Chinal, PubMed and PsycINFO. Eleven articles were used.
Genomisk selektion och uppbyggnaden av avelsprogram hos mjölkkor
During the last decade a new technique in animal breeding has developed called genomic selection. It is based on estimations of the effect from genetic markers on traits that are calculated in a reference population. By genotyping individuals, genomic breeding values can then be estimated without phenotypic observations. The aim of this essay is to investigate the response of genomic selection on breeding schemes for dairy cattle. The accuracy of the genomic breeding values is affected by the proportion of observations included in the validation set and how often the equation for estimating breeding values is reevaluated.
Vilka hjälpbehov föreligger hos en individ som lämnar en destruktiv sekt?
Tidigare forskning pekar på att psykologiska faktorer påverkar hur individen rekryteras till en sekt. Förförståelsen inför denna intervjustudie var att det skulle kunna finnas ett behov av ett rehabiliteringscentrum i Sverige, och frågeställningen gällde vilka behov som föreligger hos en individ som lämnar en destruktiv sekt sett utifrån professionella hjälpares perspektiv. 14 personer deltog, psykiatriker, präster, politiker, terapeuter och psykologer. Resultatet visade att det finns olika anledningar till att individer rekryteras in i en sekt liksom till att de lämnar den. Resultatet visade också att det föreligger ett hjälpbehov hos individer som lämnar sekter och gemensamma svar för alla respondenter var att det behövs: (1) samtal, (2) gemenskap, (3) någon som lyssnar..
Har en goodwillnedskrivning någon effekt på aktieavkastningen? : En eventstudie av bolagen på Stockholmsbörsen
On 1 January 2005, IFRS (International Financial Reporting Standards)was mandatory for all listed companies within the European Union. The introduction is to create a transparent and consistent reporting. Mainly to provide companies, investors and financiers the same access to world capital markets. Since the introduction of IFRS, the goodwill value is determined by annual impairment tests. If an impairment of goodwill is a fact the goodwill decreases in value.
INFÄSTNING AV LED-ARMATUR
The thesis was performed at the lighting company Zpecta AB. Zpecta needed to develop alternative attachment of their LED-luminaire Capella. Today Capella attaches in metal ceilings with four magnets. Zpecta got indications from their customers that there was a need for other attachments. The purpose is to determine the customer?s requirements and the interfaces that are considered for Capella.During the thesis, Capella was only on the market for testing and evaluation.The thesis was initiated to create a specification.
Konstruktion och byggnation av testfixtur för 10Gbit/s transpondermoduler
This thesis for the Master of Science degree was performed at Solectron Corporation in Norrköping. The background for the thesis was a need to develop and build two test fixtures to automatize testing and adjusting of transmitter modules (TX-fixture) and receiver modules (RX-fixture) which are head devices in DWDM-systems. The basic elements for the test fixtures are: Test board, switch board and DC/DC board. The main function of the test board is to handle communication between the transmitter and receiver modules and supply voltage to these modules. The test board was insufficient and modified with a microprocessor to handle the communication between the PC and the receiver module.
Avsättningars värderelevans
Introduction: This thesis is about how the accounting entry provisions are linked to corporate market value. By statistically examining accounting and share data for 56 companies listed on NASDAQ OMX Stockholm, the question of whether accounting information regarding provisions are value relevant for investors is studied. Listed companies shall follow the rules of IAS 37 ? Provisions, Contingent liabilities and Contingent assets, when preparing financial statements.Aim: The purpose of this thesis is to examine the relationship between reported information about provisions and investors assessment of listed companies that comply with IFRS-regulations, by statistically testing the value relevance of the accounting entry.Method: The study is based on a quantitative, deductive methodological approach. The value relevance of provisions is examined by statistically testing the collected empirical data based on the two models that is described in the reference frame.Results: The conclusion to be drawn from the study is that reported provisions have no statistically significant association with return on shares and thus is not value relevant.
Jag valde livet! : En studie av alkoholisters olika vägar ut ur alkoholmissbruk
The purpose of this essay was to find out what alcoholics themselves mean were the way out of their drinking abuse.The questions at stake are:· What kind of context did the interviewed live in before and after the turning point?· How did the process of getting out of the alcohol abuse look like?· What different factors may have influenced the turning point, the maintenance and the interviewee's choice to stop the abuse of alcohol?· Where there any other important occurrences that may have had an impact on their decision to stop drinking?For the investigation we have interviewed three women and five men. They all have had sever problems with alcohol, but all of them also have found a way out of the abuse.Our research shows that the way out of alcohol abuse is very complex and individual. The turning point is rather a process than a single occurrence. Our research also shows that the interaction between the alcohol and important individuals in their immediate surroundings are the absolute most important factor to stop using alcohol in a destructive way but also important when it comes to maintaining soberness..
Optimering av UA-Värde : Förbättring av en containerkonstruktion
Envirotainer builds containers that are specialized in transporting of temperaturesensitive products these containers are customized for airplanes. The containers arethen leased to other companies, most often to pharmaceutical companies.Envirotainer are based in Lagga, Knivsta. It is also here where the production of thecontainers is held. The container RAP T2 was designed in the early 80ies. The RAPT2 contains a fleet of about 1220 containers spread all over the world.
Agila metoders påverkan på testare
To assure good quality the software needs to be tested to find errors and to verify that the programme meets the customer?s expectations. Traditional methods are usually used in software development and means that a number of predetermined steps are followed. By using agile methods the development can more easily be adapted to the changes on the market. With these methods the testing is carried out continuously throughout the project.
Virtuell hållfasthetsprovning av en turistbuss
The competitive nature of the automotive industry has always implied a necessity to improve product development concerning time-to-market, cost and product quality. As capacity of computer-aided engineering (CAE) tools has evolved, so has the strive for simulation-driven design. Virtual durability testing using full vehicle models is one of many challenges posed in front of vehicle manufacturers when computer simulations are given a key role in product development.This thesis has been initiated as a preliminary step towards implementing dynamic virtual durability testing in the development of buses and coaches at Scania. The objective has been to assess the predictability of a full vehicle coach model and to what level of precision structural loads can be predicted. Previously performed proving ground testing of a Scania Touring coach has been the basis for the modelling and simulations in this thesis.A virtual model of the Scania Touring coach has been created in multi-body simulation software package MSC.Adams.
Digital Signage - Infokiosk; Utforma för uppmärksamhet och interaktion
The purpose of this thesis is to investigate how Digital Signage systems such as public info kiosks can be designed to better fulfill its main use; to enlighten, encourage and influence the public with information. The challenges presented from earlier studies shows that the public interests and goals, together with proper and relevant content displayed in info kiosks have impact on the attention the public have towards public displays. Qualitative methods such as interviews, usability testing and observations were conducted to further examine how a public info kiosk can be designed to draw attention and grow interest amongst students at K3, Malmo University. Usability testing were used on the digital prototypes that were developed to ensure that the gestural user interface meet the requirements of a proper interaction from the users. Important insights were made concerning; the attention and interest to relevant content, the aspects of the gestural user interface along with the placement of the info kiosk in terms of context.