Search

Your search keyword '"Lin, Jinhua"' showing total 45 results
Start Over Author "Lin, Jinhua"
45 results on '"Lin, Jinhua"'

22. Lin, Jinhua

Author

Lin, Jinhua and Lin, Jinhua

Published
2022

27. A Comparative Study of Macular and Choroidal Thickness and Blood-Flow Parameters in Patients with Intermediate and Simple Juvenile Moderate Myopia

Author

Lin,TaiNan, Yang,Yan, Lin,JinHua, Zhang,JiHui, Wen,Qian, He,XiaoLu, Chen,GuoQing, Lin,TaiNan, Yang,Yan, Lin,JinHua, Zhang,JiHui, Wen,Qian, He,XiaoLu, and Chen,GuoQing

Abstract

TaiNan Lin,1,* Yan Yang,2,* JinHua Lin,1 JiHui Zhang,1 Qian Wen,1 XiaoLu He,1 GuoQing Chen1 1Department of Ophthalmology, Fujian Provincial Governmental Hospital, Fuzhou, 350003, People’s Republic of China; 2Fujian Center for Disease Control and Prevention, Fuzhou, 350001, People’s Republic of China*These authors contributed equally to this workCorrespondence: TaiNan LinDepartment of Ophthalmology, Fujian Provincial Governmental Hospital, No. 67 of Gupin Street, Gulou District, Fuzhou, 350003, People’s Republic of ChinaTel +86 591 88013047Fax +86 591 88013003Email lintainandr@163.comObjective: This study aimed to compare the macular and choroidal thicknesses and blood-flow parameters of patients with intermediate and simple juvenile moderate myopia in order to provide a greater understanding of the pathogenesis of myopia and a basis for its prevention.Methods: Participants were selected from patients under the age of 18 with moderate myopia who were treated in our ophthalmic clinic between June and December 2019. Seventy-five right eyes were selected from participants with a mean spherical equivalent ranging from − 6.0 to − 3.0 D. These samples were divided into two groups based on eye axial length (AL). The thicknesses of the macula and choroid, the area of the foveal avascular zone (FAZ), and the blood flow density of the macular capillaries were measured, intergroup comparison was conducted.Results: The average area of the FAZ was larger in the intermediate group than in the simple group. PERIM in the upper half was lower in the intermediate group than in the simple group, and the blood-flow density in the lower half of the macular area was higher in the simple group than in the intermediate group. The blood-flow density within 1 mm of the fovea centralis and the downward blood-flow density were higher in the intermediate group than in the simple group. The thicknesses of the lower part of the FAZ, the choroid of

Published
2021

28. Study on the Optic Nerve Fiber Layer Thickness and Changes in Blood Flow in Myopic Children

Author

Lin,TaiNan, Su,Ling, Lin,JinHua, Qiu,Hong, Lin,TaiNan, Su,Ling, Lin,JinHua, and Qiu,Hong

Abstract

TaiNan Lin,1 Ling Su,2 JinHua Lin,1 Hong Qiu1 1Department of Ophthalmology, Fujian Provincial Governmental Hospital, Fuzhou, People’s Republic of China; 2School Health Department, Fujian Center for Disease Control and Prevention, Fuzhou, People’s Republic of ChinaCorrespondence: TaiNan LinDepartment of Ophthalmology, Fujian Provincial Governmental Hospital, No. 67 of Gupin Street, Gulou District, Fuzhou, 350003, People’s Republic of ChinaTel +86 591 88013047Fax +86 591 88013003Email lintainandr@163.comObjective: The present study aims to observe the optic nerve fiber layer thickness and blood flow density in the papillary area and investigate the effects of axial length (AL) and the refractive state of the optic papilla blood flow density in children with different refractive conditions.Methods: The present study was a clinical control study. The right eyes of 204 minors aged 6– 17 years were studied. The eyes were divided into four groups according to myopic refractive states. OCTA analyzed the data to compare the radial peripapillary capillary (RPC) density and the difference in the retinal nerve fiber layer (RNFL) thickness adjacent to the optic papilla between the four refraction groups.Results: The intra-optic disc blood flow density was significantly and negatively correlated with the AL and was negatively correlated with the AL in the inferior temporal quadrants. The RNFL in the superior, nasal, and inferior quadrants was negatively correlated with the AL. The RNFL in the temporal quadrant was positively correlated with the AL.Conclusion: Our present study revealed that aAs myopia increased and the AL grew in children, the blood density of the entire image of the optic papilla, in the optic disc, and the retinal capillaries in the inferior parapapillary and temporal quadrant would change significantly. With increasing AL, a significant decrease in the intra-disc and para-disc RNFL was observed in the superior, nasal, and inferior quadrants, while a su

Published
2021

30. A spectrum-domain instance segmentation model for casting defects.

Author

Lin, Jinhua, Ma, Lin, and Yao, Yu

Subjects
*CASTING of plays, *QUALITY control, *SOLIDIFICATION, *INTERPOLATION
Abstract

Accurate segmentation of casting defects plays a positive role in the quality control of casting products, and is of great significance for accurate extraction of the mechanical properties of defects in the casting solidification process. However, as the shape of casting defects is complex and irregular, it is challenging to segment casting defects by existing segmentation methods. To address this, a spectrum domain instance segmentation model (SISN) is proposed for segmenting five types of casting defects with complex shapes accurately. The five defects are inclusion, shrinkage, hot tearing, cold tearing and micro pore. The proposed model consists of three sub-models: the spectrum domain region proposal model (SRPN), spectrum domain region of interest alignment model (SRoIAlign) and spectrum domain instance generation model (SIGN). SRPN uses a multi-scale anchoring mechanism to detect defects of various sizes, where the SSReLU and SCPool functions are used to solve the spectrum domain gradient explosion problem and the spectrum domain over-fitting problem. SRoIAlign uses the floating-point quantization operation and the tri-linear interpolation method to quantize the 3D proposals to the feature values in an accurate manner. SIGN is a full-spectrum domain neural network applied to 3D proposals, generating a segmentation instance of defects in a point-wise manner. In the experiments, we test the effectiveness of the proposed model from three aspects: segmentation accuracy, time performance and mechanical property extraction accuracy. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

40. Photostimulated luminescence of BaFBr:Eu2+ phosphors

Author

Chen, Wei, Su, Mianzeng, Song, Jiaqing, and Lin, Jinhua

Subjects
Phosphors -- Research, Luminescence -- Research, Physics
Abstract

Luminescence from BaFBr:Eu2+ phosphors by photosimulation of longer wavelength than F absorption bands was seen after x-irradiation for 10 sec. This was due to the surface states or intrinsic defects of the powders. Results indicated that the luminescence by photostimulation into F bands can be reduced by electron migration from F centers into the surface states or intrinsic defects, hence reducing the x-ray storage or image stability. Surface passivation can reduce these defects and enhance the phosphors or image plate quality.

Published
1996

43. Kabelloses Sensornetzwerk zur Erfassung der Bodenfeuchte in Pflanzbeständen

Author

Sun, Yurui, Wenyi, Sheng, Lin, Jinhua, and Schulze Lammers, Peter

Abstract

Um die Bodenfeuchte im Laufe einer Vegetationsperiode verfolgen zu können, wurde ein Sensornetzwerk mit elektronischen Bodenfeuchtefühlern aufgebaut. Die Sensoren wurden durch Solarzellen mit Energie versorgt und übertrugen die Daten per Funk auf einen Datenlogger. Die elektronischen Komponenten und der Messmodus wurden auf einen energiearmen Betrieb ausgelegt, um eine Spannungsversorgung über ein Solarpanel auch im abgeschatteten Bereich von Nutzpflanzenbeständen zu ermöglichen. Die Sensoren wurden in einem Maisbestand, einem Zuckerrübenbestand und auf einer unbewachsenen Fläche für eine Messperiode von zwei Monaten eingesetzt., LANDTECHNIK, Bd. 65 Nr. 6 (2010)

Published
2010
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results