Publications by authors named "R Puzniak"
Article Synopsis
- Albinism is a condition affecting pigmentation and visual system structure, prompting research into anatomical changes for improved diagnostics, particularly using a CNN called CHIASM-Net.
- This CNN was designed to detect malformations in the optic chiasm from MRI images, using data from a significant number of control and albinism cases, and evaluated through rigorous statistical methods.
- CHIASM-Net showed promising results with 85% accuracy and identified key areas in the optic chiasm as influential for its predictions, highlighting the potential of CNNs for visual pathway analysis in diagnostics.
The superconducting state properties of the CuBaCaCuO (Cu-1234) system, with a transition temperature as high as 117.5 K, were investigated. The ac magnetic susceptibility measurements confirmed a very sharp transition to the superconducting state.
View Article and Find Full Text PDFAvalanche cascades of magnetic flux have been detected at thermomagnetic instability of the critical state in the plates of Nb-Ti alloy. It was found that, the magnetic flux Φ enters conventional superconductor in screening regime and leaves in trapping regime in the form of a multistage "stairways", with the structure dependent on the magnetic field strength and magnetic history, with approximately equal successive portions ΔΦ in temporal Φ() dependence, and with the width depending almost linearly on the plate thickness. The steady generation of cascades was observed for the full remagnetization cycle in the field of 2-4 T.
View Article and Find Full Text PDFProperties of FeTeSe single crystals, with the onset of critical temperature () at 15.5 K, were modified via hydrogenation performed for 10-90 h, at temperatures ranging from 20 to 250 °C. It was found that the tetragonal matrix became unstable and crystal symmetry lowered for the samples hydrogenated already at 200 °C.
View Article and Find Full Text PDFArticle Synopsis
- Scientists collected special MRI pictures from people with a condition called albinism and another condition called achiasma, which affect vision.
- This collection will help researchers create and test new ways to study brain pathways and how the human visual system works in people with these conditions.
- The MRI data comes with helpful tools to analyze it and includes additional information to make studying the brain easier.