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This study explores structural modifications for reducing train-induced vibrations in timber buildings by modifying the building layout. A parameter study was conducted using a semi-analytical ground model coupled with a finite element structural model. The train load was modeled as a stationary oscillating point load of unit magnitude, applied on the ground surface. The analyzed frequency range,
High efficiency, low total harmonic distortion (THD), and near-unity power factor are essential for low voltage battery charging systems to satisfy modern power quality requirements. In this study, an isolated totem-pole power factor correction (PFC) integrated buck converter has been designed and analyzed for low-voltage battery charging applications. The proposed topology combines a bridgeless t
Denna uppsats analyserar förhållandet mellan enskilda och allmänna intressen enligt plan- och bygglagen, samt hur detta förhåller sig till Regeringsformen och Europakonventionen, samt om det finns skäl för ett starkare skydd för enskildas intressen. Enligt svensk rätt har kommuner planmonopol och i vissa fall detaljplanekrav för användningen av mark- och vattenområden inom kommunens geografiska omThis essay analyses the balance between private and public interest in matters relating to the Planning and building act of 2010 according to which there has to be a fair balance of interests. This essay also analyses how the previous relates to the European convention and the Instrument of Government and if there is a need for a stronger protection of private interests. According to the Planning
Rare earth elements (lanthanides) are critical materials for many applications, particularly those involved in new energy. Extracting these elements economically from low-concentration sources may be challenging. This study investigates the interaction of Ce and Gd with microalgae that have been triggered to form phosphate-rich granules. Lanthanides usually occur in nature as phosphates, and there
When exposed to high levels of phosphate after experiencing phosphate deficiency, microalgae can synthesize granules rich in intracellular phosphate. The understanding of the mechanism of production and nature of these granules remains incomplete. Here we studied phosphate distribution and chemistry in Chlamydomonas reinhardtii and Desmodesmus armatus using scanning transmission X-ray microscopy (
Introduction: Vitamin D deficiency has previously been shown to be associated with cancer-related fatigue. If vitamin D deficiency affects fatigue in frail elderly has not been studied before. The aim of this study was to investigate associations between vitamin D, fatigue, frailty, and sarcopenia in frail elderly with cancer (FEC) and without cancer (FE) in comparison with healthy controls. Metho
Early kidney function decline may be associated with reduced filtration of middle-sized molecules, currently defined as selective glomerular hypofiltration syndrome (SGHS), and driven by the accumulation of atherosclerosis-promoting proteins. We aimed to investigate whether SGHS and other markers of kidney function are associated with subclinical atherosclerosis as evaluated by intima-media thickn
This chapter provides an overview of the different optical sectioning methods that enable performing three dimensional (3D) imaging of possibly complex samples. It discusses their benefits and limitations regarding their penetration depth, their imaging speed, their photo-toxic effect or their complexity. Focusing on fluorescence imaging, the chapter dives into approaches that make it possible to
Background: Women who have undergone cervical conization may still experience subsequent pregnancies and delivery. However, it remains unknown whether pregnancy, associated with immune tolerance, might increase the risk of subsequent cervical lesions. This study aims to address this knowledge gap by utilizing the nationwide Swedish registers. Methods: A total of 60,895 women diagnosed with cervica
Background: Low-cost particulate matter sensors have enabled new opportunities for exposure monitoring but require evaluation before application in epidemiological studies. This study assessed the performance of the SPS30 sensor integrated into the ARMIE portable monitoring sensor-node under controlled laboratory conditions. Methods: Sensors were co-located with two comparison instruments—the opti
Background: Human immunodeficiency virus type 1 (HIV-1) is one of the fastest-evolving human pathogens. Understanding HIV-1 transmission, within-host adaptation, and evolutionary dynamics is pivotal for development of interventions and vaccines. HIV-1 infection is generally caused by a single transmitted founder virus (TFV), and TFV sequences are typically obtained using single genome amplificatio
The process that generates the different types of highly differentiated cells in the immune system from hematopoietic stem cells involves not only the acquisition of lineage-specific features, but also the permanent repression of alternative developmental programs and the preservation of lineage identity. The well-charted developmental trajectory of early B-cell development, in combination with ab
This master’s thesis explores the impact from the fire investigations by the Swedish Accident Investigation Authority (SHK) on fire safety in Sweden. Through a mapping survey and a qualitative interview study, it is found that it is often difficult to identify clear connections between the investigations’ safety recommendations and real improvements to fire safety, due to long time spans and multi
Cystitis is a bacterial infection of the bladder that occurs in about half of women at least once in their lifetime. Antibiotics such as nitrofurantoin are used to treat cystitis, but antibiotic resistance is a concern, especially for recurrent infections. Here we report an open-label, randomized, single-centre, phase 2 study to analyse the acute and long-term safety and efficacy of the IL-1 recep
Objective: Prior to in vitro fertilization (IVF), physicians can choose either recombinant or urine-derived follicle-stimulating hormone (FSH) for ovarian stimulation. The common polymorphism N680S (rs6166) in the follicle-stimulating hormone receptor (FSHR) has been linked to individual variability in ovarian response to FSH stimulation and IVF outcomes, including live birth rates, highlighting i
Background: Late effects of polio (LEoP) are defined as new symptoms, for example, muscle weakness, fatigue, and pain, occurring many years after an acute polio infection. These impairments can lead to difficulties performing everyday activities (ie, activity limitations) that can reduce a person's ability to take part in society (ie, perceived participation restrictions). Yet, no study has explor
Objectives: To assess level of degeneration in human knee cartilage and meniscus in donors without clinically-evident knee arthritis, in relation to age and sex. Further, to investigate the association between cartilage and meniscus degeneration. Design: Histological sections of knee cartilage and meniscus from 44 deceased donors (ages 18–85 years) without clinically-evident osteoarthritis or infl
We have previously found using questionnaire/interview data on COVID-19 outcomes, that most subjects with severe alpha-1-antitrypsin deficiency (AATD) exhibit mild COVID-19 infection and those who additionally have COPD are at increased risk of severe COVID-19. We used objective information on COVID-19 outcomes in severe AATD (PiZZ) from the Swedish population and compared the risk of severe COVID
Wetting and dewetting dynamics in aqueous solutions containing amphiphilic compounds involve intricate interactions that influence contact angles and surface tension, with broad implications in materials science and biology. This study explores the dynamics of wetting and dewetting on glass surfaces in aqueous media containing the amphiphilic compound C18OE84, focusing on capillary rise behavior.
Klebsiella pneumoniae is a major opportunistic pathogen, where the polysaccharide capsule is traditionally recognized as a critical virulence determinant. However, its role in surface interactions and intracellular adaptation remains incompletely understood. Here, we combined phenotypic assays with physicochemical analyses to dissect the contribution of the capsule. A wza knockout mutant display
