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Popular Abstract in Swedish För att styra, övervaka och utvärdera processer inom processindustrin, samlas stora mängder data från mätgivare i olika delar av processen. Den tekniska utvecklingen inom mätteknik- och datorområdet har gjort det möjligt att mäta många olika storheter. Inom processindustrin kan antalet vara mycket stort; hundratals och ibland tusentals värden loggas kontinuerligt med inIn this work, various aspects of multivariate monitoring and control of wastewater treatment operation are discussed. A number of important difficulties face operators and process engineers when handling online measurements from wastewater treatment processes. These include, for instance, a high number of correlated measurement variables, non-stationarities, nonlinearities and multiscale process b

Common practice in industry is to rotate the milling cutter in only one direction even though the geometry of the inserts are thus that they could be used again while the milling cutter is rotating in the opposite direction. The aim of this study was to investigate to what extent it is possible to increase the tool utilization during milling by first rotating the milling cutter in one direction un

One significant environmental impact from assembly operations includes packaging material use and subsequent waste generation. Although current practice involves reduction of unnecessary materials handling, there is potential to adapt packaging material in order to simultaneously improve the environmental performance and reduce cost in a “lean and green” mindset. Hence, with increased emphasis on

A method is described for identifying simultaneous signals from different transmit antennas in multi-antenna sounders. Multiple orthogonal signals are produced from one pseudorandom code by using it to modulate RF carriers at pre-calculated offset frequencies. Although their frequency spectra are interleaved, the spectral lines from different transmitters are separable by Fourier transform at the

The objective of this work was to design and evaluate an experimental setup to be used for field studies of particle formation in biomass gasification processes. The setup includes a high-temperature dilution probe and a denuder to separate solid particles from condensable volatile material. The efficiency of the setup to remove volatile material from the sampled stream and the influence from cond

A virtual reality (VR) experiment with 96 participants was carried out to provide recommendations on the design of flashing lights on emergency exit portals for road tunnel emergency evacuation. The experiment was carried out in a Cave Automatic Virtual Environment (CAVE) laboratory at Lund University. A set of variables has been investigated, namely 1) Colour of flashing lights, 2) Flashing rate,

The dispersion of droplets and mixing of evaporated gases in a swirl stabilized gas turbine combustor are studied with an Eulerian / Lagrangian approach. The results are shown to be highly sensitive to the assumed droplet injection diameter. Injection of smaller droplet diameters lead to significantly higher local equivalence ratios and temperature drops, and increased gas phase densities, enhanci

Förutom att vara en uppskattning av Håkan Lundström är detta en bok av intresse för alla som funderar i konstnärliga termer och framför allt i en akademisk miljö. Boken består av en mosaik av idéer om allt möjligtsom ryms under det konstnärliga idéparaplyet och som har något slags anknytning till festföremålet. Utgångspunkten är drongo-fågeln som är en metafor för längtan i kammudiktningen, som haApart from appealing to those who know and appreciate Håkan, this book is likely to interest the artistically inclined, particularly those in an academic environment. It is a mosaic of texts, more than a mere memorial, that allows us to accompany Håkan on a journey to many of the places contained under the artistic umbrella, especially those which happen to have a more intimate connection with our

Based on two sets of data consisting of research articles from Web of Science, analyses were made on articles citing Genette and articles using the paratext concept. The purpose was to investigate the context in which the paratext concept is used and Genette is cited by analyzing the journals and research fields in which the articles were published, the literature these articles are based on, and

The first rapidity density distributions from relativistic collisions between truly heavy nuclei are presented. The distributions are compared with expectations from a linear extrapolation of results obtained from collisions with lighter nuclei. Fluctuations are essentially described by a simple scenario with stochastic emission.

Altered renal function is an essential component of the pathophysiological process in preeclampsia. The kidneys play a significant part in the turnover of most low molecular weight substances such as creatinine, urate and cystatin C. The present work was undertaken to investigate if the serum levels of these components are altered in characteristic ways in preeclampsia, and can be used to assist i

In the framework of the semi-hard (k(t)-factorization) approach, we analyze the various charm production processes in the kinematic region covered by the HERA experiments.

Background: Little is known regarding vitamin D deficiency (VDD) in African populations and in tuberculosis (TB) patients. VDD has been shown to be associated with TB. Objective: We aimed to compare the degree of vitamin D insufficiency (VDI) and VDD in TB patients and healthy adult controls in a West African population. Design: An unmatched case-control study was performed at a Demographic Survei