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The utilization of low calorific value gases (LCVG) in combustion devices presents particular challenges in terms of ignition and sustained combustion stability due to the presence of non-combustible components. Moderate or intense low-oxygen dilution (MILD) combustion has emerged as a promising technology for LCVG combustion, offering numerous advantages such as high combustion efficiency, reduce
Context. Open clusters are key tools to study the spatial distribution of abundances in the disk and their evolution with time. Aims. Using the first release of stellar parameters and abundances of the Gaia-ESO Survey, we analyse the chemical properties of stars in three old/intermediate-age open clusters, namely NGC 6705, NGC 4815, and Trumpler 20, which are all located in the inner part of the G
Chronic respiratory diseases, such as asthma, represent a significant global health issue. Symptoms are commonly treated through inhalation therapy, enabling the delivery of the active pharmaceutical ingredient (API) directly to the lungs. Pulmonary drug delivery offers several advantages, including reduced risk of systemic side effects and a minimally invasive route of administration. Dry-powder
Climate change is considered to be among the most serious threats to the sustainability of the world's environment, the health and well being of its people and the global economy. The rising levels of greenhouse gases in the global atmosphere are expected to cause a rise in global temperatures. In Kyoto, December 1997, the Kyoto Protocol was written under which industrialised countries have ad
The thesis focuses on the numerical simulation of the flow field in gas turbine burners. Due to tougher and tougher requirements on low levels of emission of pollutants there is a need for new combustion technologies. In gas turbines one method to attain low pollutant levels is the use of lean premixed combustion. However, in lean combustion, problems related to the flame stability can arise. Swi
The goal of the study presented in this thesis is to evaluate the advantages and drawbacks of using powder technology in the design of the iron core of small claw-pole electric motors. The use of soft magnetic composites (SMC) and compaction technology allows the creation of complex 3D iron cores. The additional dimension opens for new solutions of the electromechanical energy conversion. A claw-p
For evaluation of specific antenna arrangements in wireless communication systems we need physical channel models that take into account the directional domain. Here we propose a practical approach to wireless channel modeling in, particularly, mobile communication systems, by using an assumption that the channel can be divided into separate parts or regions that can be treated and modeled individ
The radiotherapy workflow for prostate cancer is associated with systematic uncertainty stemming from the registration between the computed tomography (CT) and magnetic resonance (MR) images. A radiotherapy workflow based solely on MR imaging (MRI), called an MRI-only workflow, has been suggested as a means of eliminating this uncer¬tainty. The aim of the work presented in this thesis was to valid
In this study we introduce a novel extension of an existing Lagrangian particle dispersion model for application over urban areas by explicitly taking into account the urban canopy layer. As commonly done, the original model uses the zero-plane displacement as a lower boundary condition, while the extension reaches to the ground. To achieve this, spatially-averaged parametrizations of flow and tur
Kursguide - Course Syllabus Faculty of Social Sciences SASA25, Gender, Citizenship and Migration, 7.5 credits Genus, medborgarskap och migration, 7,5 högskolepoäng First Cycle / Grundnivå Details of approval The syllabus was approved by the Board of the Centre for Gender Studies on 13 February 2019 and applies as of 15 March 2019, autumn semester 2019. General information The course is offered as
https://www.gender.lu.se/sites/gender.lu.se/files/2022-06/SASA25-syllabus.pdf - 2026-06-12
The right- left dimension is stronger in Sweden than in in most European countries, demonstrated by the distinct bloc division in Swedish politics. However, the political landscape is changing and new tendencies has been pointed out for Swedish municipalities. The amount of municipal executive committees with parties from both political blocs has steadily increased during the last legislative term
Syfte: Syftet med denna uppsats är att öka förståelsen för revisorers arbetsprocess och syn på goodwillhanteringen enligt gällande IFRS-regelverk. Metod: Uppsatsen grundas på en kvalitativ metod uppbyggd på semistrukturerade intervjuer där 7 revisorer från big-4 och diverse mindre byråer har medverkat. Materialet från intervjuerna har presenterats i ett empiriavsnitt med citat som stödjer det somPurpose: the purpose of this thesis is to increase the understanding of auditors' management and views on goodwill management in accordance with current IFRS regulations. Methodology: The thesis has a qualitative method built up with semi-structured interviews with 7 auditors from big-4 and various smaller agencies. The material from the interviews is presented in a section with quotes that s
This paper reports on two-dimensional (2D) and three-dimensional (3D) direct numerical simulations (DNSs) of the auto-ignition process of a lean H-2/air mixture with temperature stratification in a constant volume enclosure. Detailed chemistry and transport properties are taken into account in the simulations. The combined propagation of spontaneous ignition front and deflagration front is identif
When developing a truck it is of critical importance that the brake system is reliable and effective. When testing new trucks or brake systems you need to collect as much data as possible. One important measurand when you evaluate a pneumatic brake system is the stroke of the actuator. This master’s thesis has two goals; one is to develop a device for measuring the stroke of a pneumatic actuator m
This paper sets up a framework for designing a massive multiple-input multiple-output (MIMO) testbed by investigating hardware and system-level requirements such as processing complexity, duplexing mode and frame structure. Taking these into account, a generic system and processing partitioning is proposed which allows flexible scaling and processing distribution onto a multitude of physically sep
The use of dynamic global vegetation models (DGVMs) to estimate CO2 emissions from land-use and land-cover change (LULCC) offers a new window to account for spatial and temporal details of emissions and for ecosystem processes affected by LULCC. One drawback of LULCC emissions from DGVMs, however, is lack of observation constraint. Here, we propose a new method of using satellite- and inventory-ba
Due to the potential of compact imaging systems with magnified spatial resolution and contrast, cone-beam x-ray differential phase-contrast computed tomography (DPC-CT) has attracted significant interest. The current proposed FDK reconstruction algorithm with the Hilbert imaginary filter will induce severe cone-beam artifacts when the cone-beam angle becomes large. In this paper, we propose an alg
Every year two billion tons of MSW are produced globally. Due to the impact of solid waste and population growth, it is necessary to develop an integrated solid waste management plan. Such a plan, holistic in scope, would aim to minimize the negative impact of this material in the environment while being economically viable. The designation and terming of any one mode of waste treatment as superio
Abstract in UndeterminedDifferential in-gel electrophoresis (DIGE) experiments allow three protein samples to be run per gel. The three samples are labeled with the spectrally resolvable fluorescent dyes, Cy2, Cy3, and Cy5, respectively. Here, we show that protein-specific dye effects exist, and we present a linear mixed model for analysis of DIGE data which takes dye effects into account. A Java
Efficient mitigation of power amplifier (PA) nonlinear distortion in multi-user hybrid precoding based broadband mmWave systems is an open research problem. In this article, we carry out detailed signal and distortion modeling in broadband multi-user hybrid MIMO systems, with a bank of nonlinear PAs in each subarray, while also take the inevitable crosstalk between the antenna/PA branches into acc
