Filtyp
För att drift av gasturbiner inte ska vara allt för dyrt läggs det mycket energi på smarta lösningar när det kommer till övervakning av gasturbiner. Syftet är att undvika oplanerade stopp genom att kunna ta välinformerade beslut för att kunna genomföra förebyggande underhåll på maskiner. Den här rapporten beskiver hur en övervakningsmetod som undersöker start- och stopprocessen av en gasturbin kan
Under 1900-talets första kvartal arbetade lagstiftaren med att införa nya och revidera gamla lagar på familjerättens område. Många av lagarna hade sett mycket lite förändring sedan deras införande i och med 1734 års lag. År 1915 förändrade man begreppet trolovning och dess innebörd blev mycket mer vidsträckt än vad det tidigare hade varit. Det blev nu ett helt formlöst avtal som ansågs ingånget såDuring the first quarter of the 20th century, the legislator worked to introduce new laws and revise old ones concerning family law, many of which had seen very little change since their introduction in the law of 1734. In 1915, the concept of betrothal changed and its meaning became much more extensive than it used to be. It was now a completely formless agreement that was concluded as soon as th
Purpose: Investigate the relation between block ownership and stock liquidity. Methodology: The empirical methods used in this project are of quantitative nature. We use a set of dependent variables representing liquidity measures in order to test how our main explanatory variable, sum of block holdings, affect this. Furthermore, control variables such as market capitalization, share price and vo
Med ökad andel intermittent elproduktion i Sveriges elproduktionsmix och ett åldrande stamnät ökar behovet av flexibilitet i elsystemet. Lagring av energi, till exempel i vätgas, är ett exempel på en sådan flexibilitetslösning, eftersom energin kan flyttas från tidpunkter med överskott till tidpunkter med högt energibehov. Syftet med examensarbetet är att undersöka energisystemnyttan med ett v ägaSweden’s increasing share of intermittent electricity production and aging backbone network has given rise to a need for flexibility in the energy system. A potential solution to this challenge is energy storage, where hydrogen is a possible pathway. This master’s thesis aims to investigate the energy system benefits of a hydrogen system for seasonal energy storage of excess solar electricity in a
Närheten till vatten är viktigt för många av oss människor. Vatten som i sjöar och hav kan ge både avkoppling och ro, något att titta på i stillsamhet, något att uppleva i storm, något att åka på. Men ligger inte den starkaste upplevelsen av vatten i den fysiska kontakten? Att vara i vattnet, det är något som saknas i en stad som byggts vid, närt sig på och formats av vatten. I en stad som GöteborÄlvstranden City Bath is located in the center of Gothenburg, by the river running through the city. The project is about studying the possibilities for bathing in the center of Gothenburg by designing recreational public spaces encouraging social activity. It is also about designing for all and making the water available for all people in an including environment. The project proposes a city park
In ultrarelativistic heavy ion collisions at the LHC, each nucleus acts a sources of high-energy real photons that can scatter off the opposing nucleus in ultraperipheral photonuclear ((Formula presented)) collisions. Hard scattering processes initiated by the photons in such collisions provide a novel method for probing nuclear parton distributions in a kinematic region not easily accessible to o
Recent evidence suggests that the breast and ovarian cancer susceptibility gene product BRCA1 is involved in at least two fundamental cellular processes: transcriptional regulation and DNA repair. However, the mechanism of action of BRCA1 in either of these processes is still unknown. Here, we report the characterization of a disease-predisposing allele of BRCA1, identified in a family with severa
A laser diode structure realizing internal gain switching is suggested for high-power picosecond optical pulse generation. A thin wideband barrier layer is incorporated in the active region of this structure, in order to provide additional control of the carrier distribution and the gain dynamics. The dynamic laser output response to the nanosecond pumping current pulses is modeled and analyzed. T
Purpose – To identify and describe the strategic potential of logistics-driven packaging innovation in retail supply chains, and suggest propositions for further research and development, providing practitioners with a better basis on which to make strategic packaging and logistics decisions. Design/methodology/approach – An in-depth case study was conducted at a large global retailer which had im
Spontaneously opening, chloride-selective channels that showed outward rectification were recorded in ripped-off patches from rat cultured hippocampal neurons and in cell-attached patches from rat hippocampal CA1 pyramidal neurons in slices. In both preparations, channels had multiple conductance states and the most common single-channel conductance varied. In the outside-out patches it ranged fro
The Swedish Knee Arthroplasty Register is dependent on the participating clinics regarding accuracy of information. As the register is prospective, and since revision is used as the endpoint in survival analyses, it is important that all revisions of registered primary arthroplasties are reported. To validate the register, we sent a questionnaire to all living patients with 30,796 knees registered
When writing computer software one is often forced to balance the need for high run-time performance with high programmer productivity. By using a high-level language it is often possible to cut development times, but this typically comes at the cost of reduced run-time performance. Using a lower-level language, programs can be made very efficient but at the cost of increased development time. Re
Despite their tiny brains, insects show impressive abilities when navigating over short distances during path integration or during migration over thousands of kilometers across entire continents. Celestial compass cues often play an important role as references during navigation. In contrast to many other insects, South African dung beetles rely exclusively on celestial cues for visual reference
Factors influencing the effect of pilot-injection on main-injection combustion were investigated using heat release analysis in a heavy-duty diesel engine fuelled with standard diesel fuel, and included the effect of those factors on engine performance and emissions.Combinations of pilot injection parameters i.e. pilot start of injection, pilot mass, pilot-main injection separation, and rail pressFactors influencing the effect of pilot-injection on main-injection combustion were investigated using heat release analysis in a heavy-duty diesel engine fuelled with standard diesel fuel, and included the effect of those factors on engine performance and emissions.Combinations of pilot injection parameters i.e. pilot start of injection, pilot mass, pilot-main injection separation, and rail press
Excessive generosity with information about one's private life or the private lives of others, known as ”oversharing”, appears to be an oft-noted phenomenon in the context of ”new” media. I have previously studied this phenomenon in connection with mobile phone conversations in public places. After having eavesdropped on, or maybe rather overheard, such conversations more systematically, I offered
For two decades, Sébastien Tutenges has conducted research in bars, nightclubs, festivals, drug dens, nightlife resorts, and underground dance parties in a quest to answer a fundamental question: Why do people across cultures gather regularly to intoxicate themselves?Vivid and at times deeply personal, this book offers new insights into a wide variety of intoxicating experiences, from the intimate
Around the world today, universities are expected to play a unique role as creators of regional growth and innovation. While there appears to be a consensus that the role of universities has been expanded, critiques show that the contribution of universities to their regions is still not well defined. There have been some developments in the literature on the concept of modern universities such as
Eight frequently used slope algorithms based on a DEM (Digital Elevation Model) have been compared in flat, gently sloping/undulating, and steep terrain in order to investigate differences in estimated results. The matter of scale/resolution has not been considered, and the focus has not been on comparing the estimates with "ground truth" data but on comparisons between the different algorithms. P
