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Effect of Process Parameters on Exudation Thickness in Continuous Unidirectional Solidification Tin Bronze Alloy

Jihui Luo, Fang He

Archives of Foundry Engineering

2019

iss. 2

97--100

The exudation layer seriously affects the properties and the surface finish of the tin bronze alloy. The effective control of the exudation thickness is important measure for improving the properties of the alloy. In order to study the influence of process parameters on the thickness of exudate layer, the tin bronze alloy was prepared by continuous unidirectional solidification technology at different process parameters. The microstructure of the continuous unidirectional solidification tin bronze alloy was analyzed. The effect of process parameters on microstructure and chemical compositions was studied by orthogonal experiment. The results show that there exists an exudation layer on the surface of the continuous unidirectional solidification tin bronze alloy, and the exudation is mainly composed of a tin-rich precipitated phase. It indicates that the continuous casting speed is the main factor affecting the thickness of exudation layer, followed by mold temperature, melt temperature, cooling water temperature and cooling distance.

Automatic detection of exudates from fundus eye images based on mathematical morphology for diabetic retinopathy monitoring

Stąpor K., Świtoński A.

Studia Informatica

2005

Vol. 26, nr 1

5-14

In this paper the method for automatic segmentation of exudates from fundus eye images is proposed. The method is composed of the following steps: 1) preprocessing, 2) finding marker image and 3) geodesic reconstraction. The mean sensitivity is 95%.

W artykule przedstawiono metodę segmentacji wysięków na cyfrowych obrazach dna oka. Metoda składa się z następujących kroków: 1) przetwarzanie wstępne, 2) znajdowanie obrazu znaczników, 3) rekonstrukcja geodezyjna. Średnia czułość metody wynosi 95%.