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Quantitative phase imaging (QPI) has become a valuable tool in the field of biomedical research due to its ability to quantify refractive index variations of live cells and tissues. For example, three-dimensional differential phase contrast (3D DPC) imaging uses through-focus images captured under different illumination patterns deconvoluted with a computed 3D phase transfer function (PTF) to reconstruct the 3D refractive index. In conventional 3D DPC with semi-circular illumination, partially spatially coherent illumination often diminishes phase contrast, exacerbating inherent noise, and can lead to a large number of zero values in the 3D PTF, resulting in strong low-frequency artifacts and deteriorating imaging resolution.
View Article and Find Full Text PDFTorsion-Vibration Interactions in S and S Phenylsilane.
J Phys Chem A
January 2025
College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia.
We report the results of a study of the interaction between torsion and the low frequency out-of-plane silyl wag vibration in the ground, S, and excited, S, electronic states of phenylsilane. These studies follow the observation of interactions between methyl torsion and the out-of-plane methyl wagging vibration in toluene, several fluoro-substituted toluenes and -methylpyrrole. The interaction leads to various spectroscopic constants becoming divorced from their usual physical meaning.
View Article and Find Full Text PDFSynergistic effects of GmLFYa and GmLFYb on Compound Leaf Development in Soybean.
Physiol Plant
January 2025
School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China.
Legume leaves exhibit diverse compound forms, with various regulatory mechanisms underlying the development. The transcription factor-encoding KNOXI genes are required to promote leaflet initiation in most compound-leafed angiosperms. In non-IRLC (inverted repeat-lacking clade) legumes, KNOXI are expressed in compound leaf primordia but not in others (IRLC).
View Article and Find Full Text PDFEffects of transcutaneous auricular vagus nerve stimulation (taVNS) on motor planning: a multimodal signal study.
Cogn Neurodyn
December 2025
College of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin, 300072 China.
Motor planning plays a pivotal role in daily life. Transcutaneous auricular vagus nerve stimulation (taVNS) has been demonstrated to enhance decision-making efficiency, illustrating its potential use in cognitive modulation. However, current research primarily focuses on behavioral and single-modal electrophysiological signal, such as electroencephalography (EEG) and electrocardiography (ECG).
View Article and Find Full Text PDFResearch on noise-induced hearing loss based on functional and structural MRI using machine learning methods.
Sci Rep
January 2025
Imaging Department, Yantaishan Hospital, Yantai, China.
Noise-induced hearing loss (NIHL) is a common occupational condition. The aim of this study was to develop a classification model for NIHL on the basis of both functional magnetic resonance imaging (fMRI) and structural magnetic resonance imaging (sMRI) by applying machine learning methods. fMRI indices such as the amplitude of low-frequency fluctuation (ALFF), fractional amplitude of low-frequency fluctuation (fALFF), regional homogeneity (ReHo), degree of centrality (DC), and sMRI indices such as gray matter volume (GMV), white matter volume (WMV), and cortical thickness were extracted from each brain region.
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