The study investigated the effect of diets supplemented with different levels (0 and 2.5%) of yuza (Citrus junos Sieb ex Tanaka) on the nutritional characteristics of eels (Auguilla japonica). Fish (9.8±1.3 g) was fed to apparent satiation twice daily for 8 months. There were no significant differences in proximate composition among the treatment groups, except for the ash and carbohydrate contents (P<0.05). The vitamin C content of eel muscle in the yuza-added group was two-times higher than in non-added groups (P<0.05). Among eight organic acids in eel muscle, lactic acid was predominant, followed by citric acid, oxalic acid, malic acid, and acetic acid. Eels fed a 2.5% yuza diet had the highest lactic acid content in all groups. Six sugars were found in all groups and glucose was the major sugar. Glucose and maltose were the dominant sugars in the yuza-added group. The abundant fatty acids in the yuza-added group were C18:1 n-9, C16:0, and C16:1 n-7, which comprised over 80% of the total fatty acids. The major amino acids in samples were glutamic acid, aspartic acid, lysine, and leucine. There were few differences in the free amino acid compositions among the groups. However, histidine was the predominant amino acid and constituted over 53% of the total free amino acids.

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The spacer grid is one of the main structural components in a fuel assembly. It supports fuel rods, guides cooling water and maintains geometry from external impact load and cyclic stress by the vibration of nuclear fuel rod, it is necessary to have sufficient strength against dynamic external load and fatigue strength. In this study, the mechanical properties and fatigue characteristics of laser beam welded zircaloy thin sheet are examined. The material used in this study is a zirconium alloy with 0.66 mm of thickness. The fatigue strength under cyclic load was evaluated at stress ratio R=0.1. S-N curves are presented with statistical testing method recommend by JSME-S002 and compared with S-N curves at R.T. and 315℃. As a result of the experimental approach, the design guide of fatigue strength is proposed and the results obtained from this study are expected to be useful data for spacer gird design.

The purpose of this research is to study in depth about the life, activities, and achievements of the swimming gold medalist in Asian Game, Cho O-Ryun, to make systematic correction. This research mainly used literary data to try making theoretical contemplation, and to raise objectivity and substantiality of literary research, and to be devoted to limited literary contents, it used acquaintances who are related to this research, especially his wife, Lee Sung-Lan. Cho O-Ryun's thoughts in physical education can be described as nationalistic physical educational thoughts. He did not only have pride as Korean, and tried to show superiority of our nation to the world, but he also tried very hard to prove that Dok-do Island is a Korean territory and not Japan's. He lived with water all his life, showed his everything as a proud Korean, worked as the most patriotic person of 20thcentury in Korea, and became to be a hero, dream, and hope to people in Korea. Spent all his sweat and energy to our country Korea, Cho O-Ryun, he was this era's true hero.