Publications by authors named "I M Petrov"
Light environment in the Arctic differs widely with the seasons. Studies of relationships between objectively measured circadian phase and amplitude of light exposure and melatonin in community-dwelling Arctic residents are lacking. This investigation combines cross-sectional (n = 24-62) and longitudinal (n = 13-27) data from week-long actigraphy (with light sensor), 24-h salivary melatonin profiles, and proxies of metabolic health.
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- PreHevbrio® is a 3-antigen hepatitis B virus (HBV) vaccine designed to produce three types of HBV envelope proteins, leading to a more robust immune response compared to traditional single-antigen vaccines.
- The study found that the increased immunogenicity of the 3-antigen vaccine is not linked to glycosylation, but rather to its ability to trigger T cell responses specific to the PreS antigens.
- Results show that the 3-antigen vaccine generates stronger and longer-lasting antibody responses, correlating significantly with T cell activity and better antibody production.
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- There is a lack of research on eating disorders among rowers internationally and no studies in Hungary, particularly in weight-related sports like rowing.
- A quantitative study in summer 2023 assessed eating disorders among 222 certified competitive rowers using a validated questionnaire, revealing that lightweight rowers had higher scores in perfectionism and interoceptive awareness.
- The findings indicated that eating disorders in rowers are not more prevalent than in the general population, but emphasize the need for ongoing research and educational efforts due to the inherent risks in weight-related sports.
X-ray multi-projection imaging (XMPI) is an emerging experimental technique for the acquisition of rotation-free, time-resolved, volumetric information on stochastic processes. The technique is developed for high-brilliance light-source facilities, aiming to address known limitations of state-of-the-art imaging methods in the acquisition of 4D sample information, linked to their need for sample rotation. XMPI relies on a beam-splitting scheme, that illuminates a sample from multiple, angularly spaced viewpoints, and employs fast, indirect, X-ray imaging detectors for the collection of the data.
View Article and Find Full Text PDFAortic coarctation surgery in pediatric patients requires the placement of two arterial cannulas to monitor pressure gradients and surgical correction adequacy. Near-infrared spectroscopy (NIRS) monitoring provides insight into regional blood flow. This study aimed to investigate the correlation between NIRS values and invasive arterial pressures, exploring NIRS monitoring as a potential substitute for arterial cannulation.
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