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In this study, we investigated the effects of anodizing time, dyeing treatment time, and variations in coloring concentration on the color of an AA5052 alloy processed by dye-treated anodizing. The outward color of the anodized film changed to deep red according to increases in anodizing time, dyeing treatment time, and coloring concentration; accordingly, lightness L* decreased and saturation a* and b* increased. The concentration of the dye and the UV-visible absorbance showed a nearly perfect linear relationship, allowing a quantitative analysis of the absorbed dye. Because the quantity of absorbed dye increased as anodizing time, dyeing treatment time, and coloring concentration increased, the outward color of the anodized film deepened. In addition, from the GD-OES depth profile, we found that the dye was preferentially absorbed on the surface of the porous anodized film.
The incidence of primary splenic lymphoma is less than 1% of all non-Hodgkin's lymphoma. Lymphotrophism of hepatitis C virus may play a important role in the development of primary splenic lymphoma. However, there is no report about primary splenic lymphoma associated with hepatitis B virus infection. We present two cases of primary splenic lymphoma associated with hepatitis B virus infection. They suffered from left upper quadrant abdominal pain and underwent diagnostic splenectomy. In case 1, the spleen had a 10×10×9 ㎝ lobulated tumor mass that replaced the splenic parenchyma. In case 2, the spleen contained two lobulated macronodular white tumors, measuring 3×2 ㎝ and 2×2 ㎝. Splenic tumors were confirmed pathologically to be intermediate and high grade of B cell lymphoma. The patients received combination chemotherapy with CHOP. They are still alive without recurrence 23 months and 15 months after splenectomy.