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Increased popularity of additive manufacturing has pushed the method into new areas where it has not been used before, such as construction. Buildings are being 3D printed by various companies around the world, but the application of additive manufacturing in construction is still in its early stages. In order to conduct research in this field, the Department of Design Sciences at Lund University
This paper reports on a joint numerical and experimental investigation of the release of potassium from biomass during gasification process. In this work, laser-induced breakdown spectroscopy (LIBS) was adopted to measure quantitatively the concentration of potassium from gasifying biomass. The effect of temperature on the potassium release is investigated in hot gas mixture of CO2, H2O with diffe
The separate treatment of sludge liquor, produced by dewatering anaerobic digested sludge at wastewater treatment plants, gives rise to extreme environments for nitrogen removal. A full-scale sequencing batch reactor was operated with the aim of introducing and studying denitritation as a supplement to nitritation in order to reduce operating costs. Since the main plant only has problems with ammo
A large outbreak of enterohaemorrhagic Escherichia coli (EHEC) infections occured in southern Sweden during autumn 2002. A matched case-control study was performed and indicated an association between consumption of fermented sausage and EHEC infection (odds ratio 5.4, P<0.002). Pulsed-field gel electrophoresis analysis identified a strain of E. coli O157:H7 in clinical faecal isolates which was i
The day-to-day variation in oxygen consumption ((V) over dot O-2) during ergometer cycling by 20 healthy adolescents, 10 females and 10 males, was measured using indirect calorimetry. The two sets of measurements were performed on two consecutive days. Great care was taken to minimize possible disturbing factors. Cycling started at 50 and 100 W for female and male adolescents, respectively. The lo
Here, we describe the preparation, structure, and properties of cryogel sponges, which represent a new type of macroporous biomaterial for tissue engineering. Cryogels were produced through freeze-thawing techniques, either from agarose alone or from agarose with grafted gelatin. The aim of this study was to evaluate agarose cryogel sponges as scaffolds for Culturing both isolated pancreatic islet
Stormfloder orsakar förhöjda vattennivåer och kraftiga vågor. Det kan leda till omfattande erosion och översvämning längs med den drabbade kusten, vilket kan utgöra ett verkligt hot mot kustnära samhällen. Som en del av riskbedömningen kan det vara intressant att studera överspolningssediment (washover) som deponerats under tidigare stormfloder. Men för att kunna särskilja dessa ur det sedimentäraStorm surges cause elevated water levels and strong waves. This can lead to severe erosion and flooding along the affected coast, which can pose a real threat to coastal communities. As part of the risk assessment, it may be interesting to study washover sediments deposited during previous storm surges. However, in order to distinguish these in the sedimentary archive, their characteristics must b
Media holds an irreplaceable role in liberal Western democracies as it assumes core democratic functions such as disseminating information, representing public interests and taking on the role of a watchdog. In relation to the rise of populist radical right parties, research has revealed that media holds a crucial role. Hence, within the context of the rise of the populist radical right party Swed
Online sports betting is a billion-dollar industry with fierce competition to deliver the best possible experience. To be able to withstand the competition from rivals, bookmakers needs to be able to differentiate themselves with innovative and cutting edge solutions that offers a complete user experience. The goal of this master thesis is to investigate how sportsbook users perceive current betti
With the growing development and general interest of smart living, made possible through Internet-of-Things, a need for the exploration and studies of how smart homes can be made more accessible has been increasingly more evident. This master’s thesis examines how the interaction with smart home technology can be improved via high accessibility and usability, regardless of any end-users technical
This is a study within the field of philosophy of education that seeks to develop an alternative understanding of inclusion within education in light of current changes in society. It discusses a shift within educational research from the field of diversity education towards the field of democratic education, and argues that an idea of separation between subjects implies a tension in the theory ca
In this paper we discuss the problem of finding a suitable filter used as prefilter at digital Kalman filtering. The process is described by a stochastic state model. Two different filters are analyzed: a low-pass filter and a mean value filter. Especially we examine optimal choices of the parameters of the filters i.e. optimal integration area in the mean value filter and optimal time constant in
This report presents measuring and identifications of the process in papermachine PM4 Gruvöns Bruk, Grums.
Our intention was, except the measuring itself, to improve, if possible, the system model now used for process control with an IBM 1710 system.
The measurings were accomplished during the last two weeks of February 1969, and included six series of about 2000 samples each using a sam
The occurrence of deformations on the surface of adhesively-bonded automotive body panels in proximity to the application of the polymer adhesive is called bond-line read-through (BLRT) and occurs due to process-induced differential thermal strains between the adhesive layer and metal substrate. This type of deformation is a major problem in the automotive industry and one Volvo Car Corporation, w
Problem discussion: The internal foundry of ITT Flygt occasionally has problems with on-time delivery to the product workshops. This could lead to extra costs regarding labour and stock keeping. ITT Flygt are today unaware of the extent of these costs. Objectives: The main objective of the master thesis is to investigate the effects of low delivery accuracy from the foundry to PVC. This main objec
The objective of this study was to compare practitioners’ perspectives of the therapeutic relationship established face to face and online in order to add a broader understanding of the therapeutic relationship and whether a new context did highlight new aspects of therapy. Semi-structured interviews were conducted with nine psychotherapists in Greece: five of them worked face to face and four onl
The authoritarian Ba?th regime in power in Syria since 1966 has been challenged twice by popular contention. In the first case, ?The Islamic rebellion?, the episode of contention erupted into violence, in the second case, ?The Damascus Spring?, it did not. In both cases the challengers changed strategies and methods of contention adapting to their counterparts and the external environment. This s
Virtual Reality and advanced, interactive simulators illustrate the potentials of modern technology for improving the ecological validity of learning experiments. Yet much more preliminary work is needed to appreciate how these growingly complex means can be utilized to promote high-order emotional and motivational constructs of the user, such as self-efficacy. Drawing from the frameworks of serio
The role of environmental permits as a driver for environmental improvements has been a topic of debate for a while. Many permitting regulations were designed in the 1970's and have not been updated since then. Consequently, they have acted mostly as a driver for the adoption of pollution control technologies. Some experts now see that appropriately designed and implemented environmental permi
