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Power quality is an important issue for the distribution network companies. They must guarantee the electricity supply fulfilling the requirements for the consumers. In this thesis we investigate specifically voltage requirements. We use transformers and tap changers to see how the voltage works in an electric system and we analyze the relationships with other aspects of the system’s performance,
Introduction: This work aims to evaluate the possibility to transfer electrical power from a metal plate to the steel-cord within a car tire. If the tire stands on the plate, a connecting surface occurs which can be interpreted as a capacitor, where the rubber compound acts as a dielectric. Method: First the impedance of the tire is evaluated: An analytical model is set-up to describe the system;
The aim of this essay is to find out how the people behind the alcohol abuser (relatives of alcoholics) are able to manage their living situation. We chose to interview six relatives to get answers to our questions. We also chose to interview a drug and alcohol therapist, to get a professional perspective. The questions we asked is were: “Can strategies based on the Coping Theory explain how the r
In the past people sought for information via libraries, travel magazines or were inspired by marketing the travel agency made in order to attract consumers. Before the Internet era one way communication was the right way to follow. Since Internet was developed two ways communication has evolved and people can talk to each other worldwide. The development of the two ways communication has created
“This is not politics” A study of politicians views on their role in matters concerning The care of young persons act (LVU) The purpose of this study was to investigate what politicians who handles matters concerning exercise of authority towards individuals feel and experience in terms of the decision making process. The study is focused towards decision making in cases regarding The care of yo
En av behandlingsmetoderna mot tumörer i levern på Lunds Universitetssjukhus är SIRT som står för ”Selective Internal RadioTherapy” det vill säga en intern radioterapeutisk behandling, i detta fall specifikt för levern. Behandlingen är cirka tio år gammal och i Lund har den utförts sedan december 2010. Under våren 2012 behandlades tre patienter med SIRT då de inte kan få sina cancertumörer i leverIntroduction: Cancer treatment is a process with continuous development. The most common treatment, within the field of radiation physics, is external radiation therapy, whereas one of the least common methods is Selective Internal RadioTherapy (SIRT). SIRT is a rather novel method for treating liver carcinoma. Microspheres containing 90Y are infused directly into the liver, via the hepatic artery
Lärare aktiva i det svenska skolsystemet innehar inte bara en uppgift att i sin tjänst förmedla kunskap. De har även en skyldighet att upprätthålla ordning samt säkra studiero och trygghet i skolan. Efter flertalet domslut som fattats under senare år har gällande rätt visat sig vara problematisk att klart definiera, vilket resulterat i att lärare idag erfar en osäkerhet över vilka befogenheter somTeachers working within the Swedish educational system have a duty, not only to mediate knowledge, but also to uphold the peace and security in school, as well as to guarantee a safe school environment for his or her students. However, the means, by which this duty is to be carried out, have been questioned after a number of judicial decisions in recent years, which have resulted in insecurity amo
Where does linguistic structure come from? Recent gesture elicitation studies have indicated that constituent order (corresponding to for instance subject - verb - object, or SVO in English) may be heavily influenced by human cognitive biases constraining gesture production and transmission. Here we explore the alternative hypothesis that syntactic patterns are motivated by multiple environmental
Popular Abstract in Swedish Intresset för evidens-baserad vård växer snabbt men trots att nya forskningsresultat produceras och publiceras löpande, tar det lång tid innan de får genomslag i den vård som erbjuds patienter och brukare. Det finns beräkningar som talar för att det tar mellan åtta och trettio år innan tillgängliga forskningsresultat har blivit implementerade och börjat användas rutinmäThe aim of this thesis was to investigate and synthesise the knowledge base concerning leadership and its influence on the implementation of evidence-based practice. A further aim was to investigate attitudes and beliefs among politicians, healthcare managers and mental healthcare professionals about the Swedish national guidelines for schizophrenia or schizophrenia-like conditions. Data was colle
Plumage ornamentation often signals the quality of males and, therefore, female birds may choose elaborately ornamented mates to increase their fitness. Such mate choice may confer both direct and indirect benefits to the offspring. Males with elaborate ornaments may provide good genes, which can result in better nestling growth, survival or resistance against parasitic infections. However, these
Hydrophobic hydration, the perturbation of the aqueous solvent near an apolar solute or interface, is a fundamental ingredient in many chemical and biological processes. Both bulk water and aqueous solutions of apolar solutes behave anomalously at low temperatures for reasons that are not fully understood. Here, we use 2H NMR relaxation to characterize the rotational dynamics in hydrophobic hydrat
During recent decades women have made considerable advances in education and the labor market, even in fast-track professions such as law, medicine, and academia. While women have entered high-status professions, the career paths of some jobs have changed little and are still inflexible, which implies that professional gains may be offset by familial losses. We investigate continued childbearing,
Bioassay experiments were performed two times (with 2 years in between) in order to investigate if nitrogen (N, ammonium), phosphorus (P, phosphate) and carbon (C, glucose) additions would stimulate the growth of bacteria and phytoplankton differently in three different tropical aquatic environments. The water and their indigenous microbial communities were taken from a freshwater coastal lake (Ca
Background: Research suggests that the growing prevalence of obesity may be related to the influence of the health behaviours of peers. We look at clustering of exercise and eating behaviours amongst a previously unstudied group, young adults in Sweden. Previous research has mainly been conducted in the United States and Britain, countries that have relatively high rates of obesity. Methods: Using
BACKGROUND: Despite their pivotal roles in colorectal carcinogenesis, the interrelationship and prognostic significance of beta-catenin alterations and microsatellite instability (MSI) in colorectal cancer (CRC) needs to be further clarified. In this paper, we studied the associations between beta-catenin overexpression and MSI status with survival from CRC, and with expression of p21, p27, cyclin
The dilution effect of N-2/CO2 on the laminar burning velocity of H-2-CO-O-2 mixtures was investigated. The dilution fraction of N-2 and CO2 in the unburned mixtures varied from 0% to 70% and 0%-50%, respectively, and H-2 content in H-2-CO fuels altered from 5% to 100%. All the studies were carried out at standard laboratory conditions (1 atm, 298 K) with equivalence ratio changing from 0.6 to 2.0
Type 2 diabetes (T2D) and metabolic syndrome (MetS) are major health problems associated with cardiovascular disease. Both diseases are influenced by a combination of genetic and environmental factors. The aim of this thesis was to identify genetic risk factors for T2D, particularly T2D associated with obesity, and for MetS. To achieve this goal, we 1) followed-up a region linked to obese T2D in a
Context. It is still debated whether or not the Galactic chemical evolution of sulphur in the halo follows the flat trend with [Fe/H] that is ascribed to the result of explosive nucleosynthesis in type II SNe. It has been suggested that the disagreement between different investigations of sulphur abundances in halo stars might be owing to problems with the diagnostics used, that a new production s
Abstract in UndeterminedAbstractThe aim of this study is to investigate the structural licensing and the semantics of the dative-DP in ditransitive constructions in German from a cognitive and construction grammar perspective.While the indirect object in constructions with prototypical ditransitive verbs is said to be a lexically selected argument of the verb, the indirect object in beneficiary di
Vi lever i en värld där många människor inte har tillgång till rent vatten och faktorer som torka, föroreningar och ett dåligt vattenförvaltningssystem påverkar detta. På grund av sociala, politiska och ekonomiska faktorer, så är det också komplicerat för dessa människor att vara med i beslutsprocesser som kan påverkar deras tillgång till vatten. Men vad skulle hända om man kombinerade två olika vWater-related issues such as drought and water scarcity are problems that many countries around the world are facing. To solve this, multiple efforts have been made to combat these problems such as adopting Integrated Water Resource Management (IWRM) as a management approach. IWRM is a holistic approach that links different water systems and has therefore been popularized and conceptualized by man
