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Comparison of whole body versus thoracic bioimpedance in relation to ultrafiltration volume and systolic blood pressure during hemodialysis KU Leuven Hasselt University
In contrast to whole body bioimpedance, which estimates fluid status at a single point in time, thoracic bioimpedance applied by a wearable device could enable continuous measurements. However, clinical experience with thoracic bioimpedance in patients on dialysis is limited. To test the reproducibility of whole body and thoracic bioimpedance measurements and to compare their relationship with hemodynamic changes during hemodialysis, these ...
Simulation of ambulatory electrodermal activity and the handling of low-quality segments KU Leuven
BACKGROUND AND OBJECTIVES: Monitoring electrodermal activity (EDA) in daily life requires effective handling of low-quality segments, which are common in ambulatory EDA data. Although several low-quality handling methods have been implemented, systematic comparison of these methods, which requires a large annotated dataset, is lacking. METHODS: Therefore, we proposed the simulation of realistic ambulatory EDA data starting from high-quality EDA ...
E-TEST: a compact low-frequency isolator for a large cryogenic mirror KU Leuven Hasselt University
A Fully Integrated 230 VRMS-to-12 VDC AC-DC Converter Achieving 9 mW/mm2 KU Leuven
This work presents a fully integrated 230 VRMS-to-12 VDC AC-DC converter in 180 nm high-voltage CMOS SOI. The proposed AC-DC converter includes a multi-ratio switched-capacitor DC-DC converter (SCC). The reconfiguration is realized by parallelizing stages in the SCC using low-voltage configuration switches. Internally generated DC nodes are connected, resulting in low losses. The input control includes a resettable capacitive divider with ...
Comparison between Speckle Plethysmography and Photoplethysmography during Cold Pressor Test Referenced to Finger Arterial Pressure KU Leuven
Speckle Plethysmography (SPG) and Photoplethysmography (PPG) are different biophotonics technologies that allow for measurement of haemodynamics. As the difference between SPG and PPG under low perfusion conditions is not fully understood, a Cold Pressor Test (CPT-60 s full hand immersion in ice water), was used to modulate blood pressure and peripheral circulation. A custom-built setup simultaneously derived SPG and PPG from the same video ...
Exploring the perception of stress in childhood and early adolescence KU Leuven
Stressful life experiences may jeopardize the healthy development of children. To improve interventions, more knowledge is needed on the perception of stress by children. In adults, stress is regarded as a state of low valence and high arousal. It is unclear whether children perceive stress similarly. In the current study, 35 children of the general population completed three tasks aiming to provide insight into their knowledge of the concept ...