Sökresultat

Ergonomics are, in most cases, focusing on the human being when evaluating assembly system designs. This results in the human performance being expressed isolated from the technical environment. On the other hand, technicians are prone to concentrate on the hardware. These conditions underline the need to pursue a more integrated evaluation and design procedure in order to avoid the drawbacks of t

This paper presents a decomposition strategy applicable to DAE constrained optimization problems. A common solution method for such problems is to apply a direct transcription method and to solve the resulting non-linear program using an interior point algorithm, where the time to solve the linearized KKT system at each iteration is dominating the total solution time. In the proposed method, the s

A magnetic particle-based immuno-supported liquid membrane assay (m-ISLMA) based on chemiluminescence detection of a horseradish peroxidase-labeled hapten tracer that allows sample cleanup, analyte enrichment, and detection in a single analysis unit has been developed. Antibodies were immobilized on magnetic beads, and their position in the acceptor was controlled by two alternating opposing elect

A shear-enhanced, cross-flow ultrafiltration module was used to separate cells and proteins from the fermentation broth. Three (fermented) media were studied: rich medium, rich medium with hydrolytic enzymes added after fermentation, and wheat flour hydrolysate. To find a membrane with as high a flux as possible, but still capable of separating cells and proteins from the lactic acid containing br

Popular Abstract in Swedish Ansträngningen att framställa nya förnyelsebara drivmedel har under de senaste årtionden ökat markant. Anledningarna har varit flera, dels oron för klimatpåverkan vid användningen av fossila bränslen, dels från ett nationellt energisäkerhetsperspektiv då lokal produktion skulle kunna stabilisera tillgången. Bioetanol är ett av de största biobränslena i världen och produFuel ethanol from lignocellulosic biomass has the potential to provide a sustainable replacement for traditional oil-based fuels. This dissertation assesses the processing of three different lignocellulosic materials – spruce, wheat straw and giant reed – at industrially relevant solid loadings. The work is divided into two main parts. The first part deals with the degradation of biomass to sugars

Popular Abstract in Swedish De senaste 150 åren har erbjudit en dramatisk utveckling av vår förmåga att sprida både njutningar och smärta, både i form av upptäckter av ämnen såsom TNT och dynamit och framställningen av heroin och Viagra. Denna utveckling har följts av teknologiska framsteg som tillåter studier av dessa kemikalier genom deras interaktion med till exempel radiosignaler eller laser. Modern spectroscopic techniques, such as nuclear quadrupole resonance (NQR), nuclear magnetic resonance (NMR), and Raman spectroscopy, rely heavily on statistical signal processing systems for decision making and information extraction. The first part of this thesis introduces novel robust algorithms for detection, estimation, and classification of signals obtained through these spectroscopic tech

The top quark pair production and decay are considered in the framework of the smeared-mass unstable particles model. The results for total and differential cross-sections in vicinity of t (t) over bar threshold are in good agreement with the previous ones in the literature. The strategy of calculations of the higher order corrections in the framework of the model is discussed. Suggested approach

Using classical design optimization methods for implant-bone studies does not completely guarantee a safety and satisfactory performance, due in part to the randomness of bone properties and loading. Here, the material properties of the different bone layers are considered as uncertain parameters. So their corresponding yield stress values will not be deterministic, that leads to integrate variabl

Teachers in Social Studies can benefit from geographical perspectives in their teaching of Social Studies in elementary and high school. The aim is to connect geographical perspectives to various social processes and to integrate it in teaching of Social Studies. But how can the relevance of geographical perspectives in an education for teachers in Social Studies be motivated and to what benefits

Coniferous as spruce (more specifically Norway spruce, Picea abies) and deciduous species like European beech (Fagus sylvatica) and oak (Quercus spp.) co exist in south Sweden. In perspective of climate change, species composition of Swedish forests is assumed to change. Observed climate on the period 1950-2010 prove that a general warming trend is occurring in southern Sweden, and that vegetation

The role and activities of the European Court of Justice (EJC) have been discussed for couple of decades now. Without any doubt the role that ECJ fulfils today in the European Community is not what it was in the beginning of its existence and perhaps not even what was strictly prescribed by the EC Treaty. In the present thesis will be firstly examined, how the present role of the ECJ, as a quasi-c

The purpose of this Master Thesis was to design an automatic separator, a machine that would separate organic from non-organic waste through a mechanical process. The use of a mechanical process was one of the target specifications given by WTM AB, the company that initiated the project. WTM is a small machine design company located in Ängelholm, Sweden, who designs machines for different kind of

Popular Abstract in Swedish Ett grundantagande för avhandlingen Klassrummet som muntlig arena. Att bygga och etablera ethos är att en människa som med trovärdighet vill kunna verka som en demokratisk medborgare i olika kommunikationssituationer måste besitta kommunikativ kompetens. Följaktligen hänger demokrati och kommunikativ kompetens tätt samman. En viktig trovärdighetsfaktor i sammanhanget ärThe Class Room as an Oral Arena: Building and Establishing Ethos starts with the premise that every person who wants to act credibly as a democratic citizen must have a communicative competence. Democracy and communicative competence are closely linked. To communicate credibly is to communicate with ethos. The purpose of this dissertation is to study how students in Swedish gymnasium build and est

Muscle contraction studies often focus solely on myofibres and the proteins known to be involved in the processes of sarcomere shortening and cross-bridge cycling, but skeletal muscle also comprises a very elaborate ancillary network of capillaries, which not only play a vital role in terms of nutrient delivery and waste product removal, but are also tethered to surrounding fibres by collagen "wir

Microbial decomposition of soil organic matter (SOM) is the source of most of the terrestrial carbon dioxide emission. Consequently, our ability to predict how climate warming will affect the global carbon (C) budget relies on our understanding of the temperature relationship and adaptability of microbial processes. We exposed soil microcosms to temperatures between 0 and 54 degrees C for 2 months

In this contribution we study the balloon angioplasty in a residually stressed artery by means of a non-local gradient-enhanced fibre damage model. The balloon angioplasty is a common surgical intervention used to extend or reopen narrowed blood vessels in order to restore the continuous blood flow in, for instance, atherosclerotic arteries. Inelastic, i.e. predominantly damage-related and elastop

Many ICU-patients have memory-gaps which may affect their recovery. A tool in the recovery can be an ICU-diary to explain and clarify thoughts and events from the ICU-period. There are different standards for the content in the ICU-diary. The aim of this study was to identify the preferred content and usefulness of an ICU-diary as described by ICU-patients. METHOD: A descriptive, exploratory co

We present a first time-resolved deuterium NMR study on wormlike micelles under shear. For the investigation, a micellar system made of soybean phosphatidylcholine (lecithin), D2O, and cyclohexane was studied in the concentrated regime, in the vicinity of the isotropic/nematic transition but positioned in the equilibrium isotropic phase. The D2O dispersed in the micellar core was used as a probe t