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When low calorific value gases are fired, the performance and stability of gas turbines may deteriorate due to a large amount of inertballast and changes in working fluid properties. Since it is rather rare to have custom-built gas turbines for low lower heating value (LHV) operation, the engine will be forced to operate outside its design envelope. This, in turn, poses limitations to usable fuel
This study considers detection of polyproline type II secondary structures from protein sequences. This difficult problem was handled with multilayer perceptron neural networks, which were found to be useful for such bioinformatics studies. Polyproline II secondary structures have not previously been tried to be predicted from sequences.
When performing adaptive optics (AO) correction for the effect of atmospheric fluctuations, different effects, related to measuring the wavefront at one wavelength and observing at another one, may show up. Some of these effects are related to the dispersive properties of the atmosphere. Others are related to diffraction, both regarding light propagation through the turbulent atmosphere to the ent
The evaporative gas turbine (EvGT), also known as the humid air turbine (HAT) cycle, is a novel advanced gas turbine cycle that has attracted considerable interest for the last decade. This high-efficiency cycle shows the potential to be competitive with Diesel engines or combined cycles in small and intermediate scale plants for power production and/or cogeneration. A 0.6 MW natural gas-fired EvG
BACKGROUND: To investigate, in a rabbit model, the effect of two different doses of vigabatrin (VGB) on retinal function and morphology. METHODS: Twenty-nine rabbits of mixed strain were divided into two groups, receiving either high-dose (n = 15) or low-dose (n = 14) oral VGB treatment (cumulative dose 29.8 +/- 2.9 g and 14.2 +/- 0.6 g respectively). Ten rabbits receiving water served as control
Under många år har konsumenttidningen Råd & Rön haft stort inflytande på de svenska konsumenterna och deras konsumtion. Under närmare 50 år ägdes tidningen av Konsumentverket och dess föregångare Statens institut för konsumentfrågor. Genom studier av Råd & Röns årgångar, konsumentmyndigheternas arkiv samt riksdagstrycket står det tydligt att politiker och konsumentmyndigheter haft stort in
Background More than one in five patients who undergo treatment for breast cancer will develop breast cancer-related lymphedema (BCRL). BCRL can occur as a result of breast cancer surgery and/or radiation therapy. BCRL can negatively impact comfort, function, and quality of life (QoL). Manual lymphatic drainage (MLD), a type of hands-on therapy, is frequently used for BCRL and often as part of com
Our aim was to analyze retinal structure in young patients with Best disease with reference to future gene therapy. This was a retrospective observational spectral domain optical coherence tomography study of four patients aged 10 years or less with Best disease. Findings ranged from subtle thickening at the level of the retinal pigment epithelium-photoreceptor interdigitation line, to subretinal
Ett flertal studier av svensk kommunal praktik pekar på betydelsen av att kommuner anpassar sig till förändrade förutsättningar (se till exempel Brorström och Siverbo 2008, Hellström med flera 2009). En del av dessa förändringar kan vara mer eller mindre tvingande, såsom förändringar i de lagar som omgärdar kommunal verksamhet, medan andra kan vara mer eller mindre frivilliga. Förändringar sker e
Mitt budskap med denna artikel är kort och gott: Tolka din empiri från olika analytiska perspektiv! Ställ olika frågor till den! Budskapet gäller för båda kvalitativa och kvantitativa empiriska material. Det material jag här skall använda för att illustrera mitt tillvägagångssätt är emellertid kvalitativt och fältarbetet genomfördes för flera decennier sedan. Jag vill utgå från denna kvalitativa e
Flame flashback from the combustion chamber to the premixing section is a major operability issue when using high H-2 content fuels in lean premixed combustors. Depending on the flow-field in the combustor, flashback can be triggered by different mechanisms. In this work, three flashback mechanisms of H-2/CH4 mixtures were visualized in an atmospheric variable-swirl burner using high speed OH* che
Industrialized building has drawn in ideas from many pioneering researchers during its decades of development; in this brief recapitulation we present some observations on selected moments in the history that have significantly shaped the approach to building construction. The first formative movement identified is prefabrication, as used by Joseph Paxton during construction of the Crystal Palace.
This chapter describes the architecture of a middleware layer between low-level sensing devices and higher level software layers, to support the requirements of a software infrastructure for networked enterprises. The development of such middleware layer is an important problem, as demonstrated by the number or research papers and the variety of approaches that can be found in literature. The main
