In this thesis, a novel method for characterizing Permanent Magnet Synchronous Machines(PMSMs) based in the dynamic response of the analyzed motor is evaluated. The most significant motor characteristics -torque, flux and efficiency maps- are computed from the motor voltage, currents and rotor position data sampled during the experiment. This way of obtaining the characteristics of the motor is po

Effekter av träning i fastande tillstånd Den tydligaste effekten av uthållighetsträning är förbättrad kondition. Ordet kondition kan definieras som samspelet mellan lungor, hjärta, blod och muskler. Lungorna ska växla syrgas från inandningsluften och släppa ut koldioxid. Hjärtat ska pumpa blod till lungorna och ut i kroppen. Blodets uppgift är att syresätta musklerna vid fysisk ansträngning. Allt

ABSTRACT The objective of this project was to study if the adaptive background affects the spectral sensitivity of budgerigars (Melopsittacus undulatus) tested in bright light. Two budgerigars were trained, by associative learning with food rewards, in dual choice tests to discriminate monochromatic light stimuli of nine different wavelengths from an adaptive background with ultraviolet light (UV

This project is a study that has described what condition based maintenance is and has examined the possibilities with condition based maintenance on the new A26 submarine. It finishes with a detailed case study of how a condition based maintenance system could look like on the submarine’s diesel engines. Questions that have been answered are; what is condition based maintenance and how does it wo

Abstract Ketoprofen, naproxen, diclofenac, and ibuprofen are four widelyused anti-inflammatory drugsthat areproduced in several kilotons each year.They end up in natural water recipients which couldvary inpH from around 6.0 to 9.0. Bearing in mind that most of thesepharmaceuticals are weak acids and therefore dissociates in different degree depending on surroundingpH and the chemical’s pKa, we ca

Ett nytt protein som hjälper Haemophilus bakterien att fastna i luftvägarna På ytan av luftvägsbakterien Haemophilus influenzae, finns en rad proteiner. Genom att flytta dessa proteiner till en annan bakterie, Escherichia coli, har vi visat att de kan binda till ett protein som finns i våra luftvägar. Bindningen till luftvägarna är ett första steg i etableringen av en infektion som sedan gör oss

PEJL PÅ RASTANDE FLYTTFÅGLAR Varje vår och höst passeras Falsterbo av miljontals flyttfåglar. Många mellanlandar här för att fylla på sina bränsledepåer och vila upp sig inför nästa etapp på resan. Frågor som är intressanta inom flyttfågelforskningen är bland annat hur länge fåglarna rastar och om längden på vistelsen är kopplad till art, ålder, kön, fettreserver eller flyttningsstrategi (i det hABSTRACT The aim of this study was to examine autumnal stopover strategies of migratory passerines, with the main focus on stopover duration, departure time and departure direction in relation to biometrics (age, sex and fat reserves), different migratory strategies (long, short-to-medium and partial migration) and weather conditions. During the autumn migration season of 2010, in conjunction wi

In the E. ON sponsored research project, Distibution LABoratory, at the Department of Industrial Electrical Engineering and Automation at LTH the impact of the increased move towards use of cables in the Swedish distribution grid is examined. The project also built a model of a small distribution grid. The model was used to simulate a Petersen coil earthed grid system. Petersen coil earthing lower

Solar storms are a phenomenon that has a wide array of adverse consequences on technological systems, power systems in particular. During severe solar storms a geomagnetically induced current (GIC) starts to flow through long conducting structures, such as power lines and pipelines. The probability of solar storms has a roughly linear relation with the sunspot activity level which varies in 11 yea

Upptäcka gener inblandade i diabetes I många sjukdomar, så som diabetes, spelar människans gener en viktig roll i vem som insjuknar och hur utvecklingen sker. Därför är det viktigt att, i den mån det går, identifiera dessa gener så vid insjuknande, ge varje patient en mer specialiserad vård som kan bromsa sjukdomsförloppet. Diabetes är en metabolisk sjukdom där kroppen inte kan reglera glukoshaAbstract Aims/hypothesis Diabetes, a metabolic disease rapidly increasing worldwide, is triggered by both genetic and environmental factors. Longitudinal studies, such as the Malmö Prospective Project (MPP), give a unique opportunity to study life-long risk of developing a disease. In MPP, more than 2,000 individuals developed diabetes during a mean 25-year follow-up time. However, patients with

The objective of this master thesis is to review the present and future condition of generator step up power transformers at the combined heat and power plant Öresundsverket, in Malmö. The objective of this work was to prolong the lifetime of power transformers at Öresundsverket. The thermal properties of power transformer are been taking into consideration for their life time assessment. The most

The Archaean Yilgarn craton in Western Australia is a granite greenstone belt with abundant economically important mineral reserves, including several world-class gold deposits such as the giant Kalgoorlie deposit. Structural controls on gold deposition and the fact that most deposits were formed later in the craton’s tectonic history, has resulted in the general acceptance of a late-orogenic str

Vilka fördelar har gruppundervisning i slagverk? Detta är frågan som genomsyrar hela studien. Studien syftar till att lyfta fram aktiva slagverkspedagogers syn på gruppundervisning inom musik- och kulturskola Studien bygger på kvalitativ forskning som metod och fyra aktiva slagverkspedagoger har intervjuats. För att ge studien mer trovärdighet har informanternas tankar jämförts med tidigare forsknPlay together – teaching percussion in groups The purpose of this study is to investigate and to lift forward what percussion teachers who work at the Swedish municipal school of music think are the benefits and negative sides of teaching in groups. The study is based on qualitative research where four percussion teachers have been interviewed about their opinions in this matter. Their ideas and t

The impact of microcredit on women’s empowerment remains debated. While some studies suggest that microcredit helps women increase their income earning abilities, leading to greater power within the household, others argue that men often take control over the microcredit allocated to women, which leads to a more vulnerable position within the household for women. This paper evaluates the impact of

Cultural heritage tourism is regarded as one avenue that can be used to stimulate the economic viability of an area; this is strongly believed by the tourism proponents in the parish of Manchester, Jamaica. With a lagging economy, and various studies done in the area, there has been no significant movement by policy makers towards implementing a sustainable tourism product, much to the ire of the

Rehabilitering av personer med hörselnedsättning kan utformas på olika sätt. En nyare metod är internetbaserad hörselrehabilitering som bygger på deltagarnas egen aktivitet. Syftet med studien var att undersöka deltagarnas upplevelser av en internetbaserad rehabilitering som genomförts under år 2011. Studien utfördes som en kvalitativ intervjustudie. Tjugo personer som använt hörapparat i flera år

Background: The Company sells many of its products through external sales channels. Two important goals for the Company are to increase the sales of components and decrease the cost of sales by making the ordering processes more effective. The Company is today vending a limited number of components and products through e-commerce to the sales channels. One of these products, in this report referre

Konkurrensen om kunder i en globaliserande värld skapar nya och innovativare sätt att arbeta effektivare med hantering och interaktion med kunder och potentiella kunder för att stärka sin position på marknaden. För att möjliggöra detta investerar organisationer i CRM-system för att dels kunna hantera sina kunder och potentiella kunder, men även för att skapa en mer effektiv kommunikation och kunsk

Abstract Over the past decade, mass spectrometry has had an essential role in improvement of proteomics techniques. New instrument and analytical protocol developments have made mass spectrometry one of the most widely used analytical methods in quantitative proteomics. Today one of the commonly used protocols in proteomics is digestion of proteins to peptides and analysis of the peptides with li

Abstract To develop a genetic system for the extreme thermophile Caldicellulosirruptor saccharolyticus is the next step in improving hydrogen productivities. Genetic systems are powerful tools to understand the metabolic network of the microorganism and to obtain high hydrogen productivities and yields. The primary aim of this project is to develop an expression vector for C. saccharolyticus. Pre