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Power converters of DC-DC nature are pivotal to supplying power in electronics, charging equipment, and renewable energy integration along with AC-DC converters. They are frequently used in most of the power supplies of electronic devices as well as dedicated high-energy functionalities including charging battery cells, electroplating, and welding. Furthermore, DC-DC switching regulators not only
Converters of AC-DC nature are pivotal to supplying power in electronics, charging equipment, and renewable energy integration. A closed-loop Cuk converter with switched capacitor network and PID controller was proposed in this paper to mitigate the limitations of open circuit Cuk converter topology to ensure improved power factor from input along with low distortion in output, making it ideal for
The development of an artificial neural network to analyze power system faults is currently under way. However, the produced system is unsatisfactory because it is prone to failure and takes longer to detect faults. The ultimate goal of this project is to create an artificial neural network system that can identify and classify all forms of faults in power grid lines soon after they occur. In prin
Microelectronic systems, wind energy applications, battery chargers, DC motor controllers, and home electric appliances all require AC/DC converters for power supply. With a high voltage conversion ratio and minimal EMI emissions, switching capacitor (SC) based converters could be a promising answer to the difficulties of the present century. A bridge SEPIC PFC converter with a mono-switching capa
The performance of graphene-based and multilayer MoS2 based MSM (metal-semiconductor-metal) photodetectors is compared in this study using analytical analysis and simulation. At varying voltages, optical powers, and wavelengths, the total illuminated current, photocurrent, and photo responsivity in these two photodiodes show distinct findings. While adjusting the wavelength of the incident light a
Power supplies for microelectronic systems, battery chargers, wind energy applications, electric appliances in the household and dc motor drives require AC-DC converters. The proposed bridgeless Cuk PFC converter in this paper is featured with common ground, transformerless structure, and clear energy delivery process. The absence of bridge rectifiers, transformer and the presence of only two semi
AC-DC converters are mostly used as power supplies for microelectronic systems, battery chargers, wind energy applications, electric appliances in household and dc motor drives. Switched-capacitor (SC) network based converters can be good solution to the challenges of 21st century having high voltage conversion ratio and low EMI emissions. The application of this type of converters is in microproc
The nasal mucosa is the first immunologically active site that respiratory viruses encounter and establishing immunity at the initial point of pathogen contact is essential for preventing viral spread. Influenza A virus (IAV) in humans preferentially replicates in the upper respiratory tract (URT) but mouse models of infection result in lower respiratory tract infection. Here, we optimize IAV inoc
På Lunds universitet finns ett tvärvetenskapligt nätverk för forskare med anknytning till textil och mode. Under ett möte i februari presenterades flera nya samverkansmöjligheter inom området, till exempel genom universitetets nya kompetenscentrum REAL som samlar forskning, utbildning och innovation inom handel och logistik och genom projektet MCRS som är en systemdemonstrator för framtidens tillvPå Lunds universitet finns ett tvärvetenskapligt nätverk för forskare med anknytning till textil och mode. Under ett möte i februari presenterades flera nya samverkansmöjligheter inom området, till exempel genom universitetets nya kompetenscentrum REAL som samlar forskning, utbildning och innovation inom handel och logistik och genom projektet MCRS som är en systemdemonstrator för framtidens tillv
Lunds universitet rankas som topp-tio i världen inom forskning på detaljhandel och logistik. Helsingborgsregionen delar på förstaplatsen i Sverige vad gäller bästa logistikläge. Det här ger en bra bas för Lunds universitets satsning REAL – Center for Retail and Logistics – på Campus Helsingborg. Detta centrum profilerar sig med hållbarhet, digitalisering och förändrat arbetsliv och lyfter också frLunds universitet rankas som topp-tio i världen inom forskning på detaljhandel och logistik. Helsingborgsregionen delar på förstaplatsen i Sverige vad gäller bästa logistikläge. Det här ger en bra bas för Lunds universitets satsning REAL – Center for Retail and Logistics – på Campus Helsingborg. Detta centrum profilerar sig med hållbarhet, digitalisering och förändrat arbetsliv och lyfter också fr
Ledelse er et af de mest omtalte og undersøgte fænomener i moderne organisationer. Det bliver ofte fremhævet som nøglen til succes. Men er ledelse virkelig den universelle løsning på alle organisatoriske udfordringer, og hvordan udfolder det sig i praksis, når ledere forsøger at omsætte ambitioner til handling? Denne bog går bag om de velkendte fortællinger og præsenterer et mere nuanceret billede
OBJECTIVE: To explore the associations between daily time in sedentary behaviour (SED) and physical activity (PA) with perceived physical capacity, health-related quality of life (HRQoL) and fatigue in persons with post COVID-19 condition (PCC). An additional objective was to describe changes in SED and PA levels over three months.MATERIALS AND METHODS: Individuals with PCC self-reported on physic
AIMS: To investigate whether out-of-hospital cardiac arrest (OHCA) survivors had lower levels of self-reported physical activity compared to a non-cardiac arrest control group with myocardial infarction (MI), and to explore if symptoms of anxiety, depression, kinesiophobia (fear of movement) and fatigue were associated with a low level of physical activity.METHODS: Predefined case-control sub-studAIMS: To investigate whether out-of-hospital cardiac arrest (OHCA) survivors had lower levels of self-reported physical activity compared to a non-cardiac arrest control group with myocardial infarction (MI), and to explore if symptoms of anxiety, depression, kinesiophobia (fear of movement) and fatigue were associated with a low level of physical activity.METHODS: Predefined case-control sub-stud
Marine environments worldwide are increasingly threatened by warming, deoxygenation, and ocean acidification. These stressors can be recorded as alterations in foraminiferal geochemistry and morphology. We integrated morphological features with assemblage and geochemical records of benthic foraminifera from the Danish Straits at the entrance to the Baltic Sea, covering the Last Interglacial period
Introduction: Homecare services are limited, and there is likely a gap between the everyday activities homecare users want to do and the activities they perform or receive help with. Structured assessment on the desire for engaging in activities may be useful to identify unmet occupational needs.Aim: To reflect on the experiences of using the Occupational Gaps Questionnaire (OGQ) to investigate ho
The global energy transition is not merely a technological shift toward renewable energy but also a transformation of power structures, agency, and governance. As nations and cities implement sustainable energy solutions, both traditional energy actors and new entrants are reshaping participation in the energy sector. Within this evolving context, the smart grid emerges as an arena where these dyn
Pulmonary arterial hypertension is a complex and heterogeneous condition, associated with a considerable diagnostic delay, diminished exercise capacity, and poor outcomes. In pulmonary arterial hypertension, biomarker research has become a subject of intense inquiry, and novel circulating biomarkers acknowledged in a multitude of mechanistic pathways are emerging. Beyond the widely used natriureti
BackgroundInflammation and tyrosine-kinases are known mediators in the pathobiology of cardiovascular disease. Plasma biomarkers reflecting these systems may provide a noninvasive complement reflecting hemodynamics, aiding in clinical decision-making. We therefore aimed to investigate the plasma levels of vascular and inflammatory proteins, and their associations with invasive hemodynamics in adva
The purpose of this study is to look into patronage effects of extended supply outside peak hours on regional public transport services. Previous studies have shown that the service frequency is an attribute of great importance for regional passengers, but little is known about the details regarding peak and off-peak frequencies or service hours. The present study addresses this knowledge gap, dep
