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506 results on '"Yang, Zhengfei"'

55. Using three‐dimensional modelling of the anterior sclera to investigate the scleral profile in myopic eyes.

Author

Yang, Zhengfei, Yang, KaiQi, Li, Zhouyue, Hu, Yin, Jiang, Jinyun, Tang, Xianghua, Zeng, JunWen, Wang, Mengyi, and Yang, Xiao

Abstract

Purpose: This study used three‐dimensional (3D) modelling to investigate scleral profiles in myopic eyes and compare them with emmetropic eyes. Methods: In this prospective observational study, the eyes of 151 participants were analysed using the corneoscleral profile module (CSP) of the Pentacam HR. Non‐rotationally symmetrical ellipsoids were fitted to the anterior scleral sagittal height. Three radii were analysed, namely the nasal–temporal (Rx), superior–inferior (Ry) and anterior–posterior (Rz) orientations. Additionally, the area index (AI) and aspherical parameters (Qxy, Qxz and Qyz) of the anterior sclera‐fitted ellipsoid (ASFE) were quantified. Results: The findings showed an increase in Rx (−0.349 mm/D), Ry (−0.373 mm/D), Rz (−1.232 mm/D) and AI (−36.165 mm2/D) with increasing myopia. From emmetropia to high myopia, the vertical and horizontal planes of the anterior sclera became increasingly prolate (emmetropia, Qxz: 0.02, Qyz: 0.01; low myopia, Qxz: −0.28, Qyz: −0.28; high myopia, Qxz: −0.41, Qyz: −0.43). There were no significant differences in the coronal plane across the three groups (H = 2.65, p = 0.27). The anterior scleral shape of high myopes in the horizontal and vertical planes was more prolate than that of emmetropes and low myopes (Qxz, high myopes vs. low myopes: p = 0.03, high myopes vs. emmetropes: p < 0.001; Qyz, high myopes vs. low myopes: p = 0.04, high myopes vs. emmetropes: p < 0.001). Conclusions: As the degree of myopia increased, non‐uniform anterior scleral enlargement was observed. These findings provide a better understanding of the anterior segment with varying degrees of myopia. [ABSTRACT FROM AUTHOR]

Published
2024
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61. Choriocapillaris flow features in children with myopic anisometropia

Author

Jiang, Zhihao, Bo, Wu, Yang, Zhengfei, Luo, Xiaoling, Ni, Yao, and Zeng, Junwen

Abstract

AimsTo examine differences between the eyes in choriocapillaris perfusion and choroidal thickness in children with myopic anisometropia.MethodsIn this observational and prospective study, 46 children with myopic anisometropia were enrolled. Choriocapillaris perfusion parameters, including the percentage of flow voids, the total number of flow voids and the average flow void area were obtained by optical coherence tomography angiography (OCTA). The OCTA image was divided into a 1 mm-diameter central circle (C1) and a 2.5 mm-diameter annulus (without the inner central 1 mm circle, C1-2.5). Both C1 and C1-2.5 are centred on the foveola. The C1-2.5 was divided into nasal (N1-2.5), temporal (T1-2.5), inferior (I1-2.5) and superior (S1-2.5) areas. Differences in these parameters in different regions between eyes were analysed.ResultsThere were no significant differences in the percentage of flow voids and the average flow void area between the fellow eyes. The total number of signal voids was significantly higher in the less myopic eyes in C1-2.5 (p=0.032), S1-2.5 (p=0.008) and N1-2.5 (p=0.019). Changes in spherical equivalent refraction and axial length were both correlated with the changes in the total number of flow voids in N1-2.5 (R=−0.431, p=0.03; R=−0.297, p=0.047).ConclusionsThe choroid in the macular region becomes thinner and the total number of flow voids in the nasal macular region decreased with the amplitude of myopia. This suggests that a decrease in total number of flow voids may indicate an early change in myopia.

Published
2024
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80. Unravelling the pseudocapacitive origin of graphene oxide-based aerogels by comparative insights.

Author

Huang, Tieqi, Wu, Weiying, Yang, Zhengfei, Hou, Qianqian, Li, Ruolan, Chen, Suyue, Yang, Yahui, and Liu, Hongtao

Subjects
AEROGELS, GRAPHENE, SURFACE reactions, CARBONYL group
Abstract

We reveal the intrinsic pseudocapacitive center of graphene-oxide-based aerogels by investigating different modified graphene skeletons from various approaches. A high proportion of carbonyl groups in carbon networks is shown to optimize the construction of rational pseudocapacitive sites by triggering reversible proton-induced surface reactions, leading to satisfactory electrochemical performance. [ABSTRACT FROM AUTHOR]

Published
2023
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88. Transcriptional landscapes of de novo root regeneration from detached Arabidopsis leaves revealed by time-lapse and single-cell RNA sequencing analyses

Author

Liu, Wu, primary, Zhang, Yuyun, additional, Fang, Xing, additional, Tran, Sorrel, additional, Zhai, Ning, additional, Yang, Zhengfei, additional, Guo, Fu, additional, Chen, Lyuqin, additional, Yu, Jie, additional, Ison, Madalene S., additional, Zhang, Teng, additional, Sun, Lijun, additional, Bian, Hongwu, additional, Zhang, Yijing, additional, Yang, Li, additional, and Xu, Lin, additional

Published
2022
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94. Rice LEAFY COTYLEDON1 Hinders Embryo Greening During the Seed Development

Author

Guo, Fu, primary, Zhang, Peijing, additional, Wu, Yan, additional, Lian, Guiwei, additional, Yang, Zhengfei, additional, Liu, Wu, additional, Buerte, B., additional, Zhou, Chun, additional, Zhang, Wenqian, additional, Li, Dandan, additional, Han, Ning, additional, Tong, Zaikang, additional, Zhu, Muyuan, additional, Xu, Lin, additional, Chen, Ming, additional, and Bian, Hongwu, additional

Published
2022
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