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Effects of Interface Roughness and Thermal Residual Stresses on the Fibre Push-Out Problem
채영석,Yiu-Wing MAI 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_2
An improved analysis considering the effects of interface roughness and thermal residual stresses in radial and axial directions is developed for single fibre push-out test. The roughness of the interface. which has a significant effect on the fibre sliding behaviour. is expressed by a Fourier series expansion which has a good convergence. It has been found that both have pronounced effects on the stress transfer properties across the interface and interfacial debonding behaviour.
수세용액과 Oleoresin 향신료 첨가가 기계발골계육의 품질특성에 미치는 영향
채영석,강창기,이성기,조규석,정재경,김종원 한국축산학회 1994 한국축산학회지 Vol.36 No.1
This study was undertaken to determine the effect of washing solution including distilled water, sodium phosphate(0.04M, pH 8.0) and sodium bicarbonate solution(0.5%, pH 8.0) on the quality characteristics of mechanically deboned chicken meat(MDCM) and also investigated the effect of natural oleoresin sage and rosemary of washed MDCM on the retardation of oxidative rancidity during storage at 3℃. Lipid and protein content decreased while moisture content increased by washing procedure in MDCM. 47.4% and 47.1 % of total fat(dry weight basis) in MDCM were removed by sodium phosphate and sodium bicarbonate solution, respectively. The yields of washed MDCM with sodium phosphate and sodium bicarbonate solution were 68.1% and 73.3% (protein weight basis), respectively. SDS-PAGE indicated that a substantial quantity of the sm-coplasmic fraction was removed by the washing procedure. The washed MDCM waa signifiruoly lighter and les, red than the unwashed MDCM. The content of fatty acid such as 16:0, 18:1, and 18:2 contained about 85% in MDCM. There was not apparent difference of fatty acid composition by washing procedure. The washed MDCM itself showed remarkably retardation of oxidative rancidity during storage. Natural oleoresin rosemtuy and sage had a slightly antioxidant activity in washed MDCM with sodium dicarbonate solution compared with only washed MDCM.
백영호,채영석 釜山大學校 附設 體育科學硏究所 1995 體育科學硏究所 論文集 Vol.11 No.-
The purpose of this study was to analyze the Self-Care Behaviors of elementary school teachers through survey research. The results were as following: 1) It was presented the male smokers 62.2% of 244 males and female smokers 0.8% of 259 females(p<0.000). 2) It was presented 3.2% of 244 males and 11.8% of 259 females did not have a breakfast regularly(p<0.000). 3) It was presented 62.5% of 244 males and 31.2% of 259 females were exercising. Also, It was found males' kind of exercise was as following order tennis, walking, and mountain-climbing and females' kind of exercise was as order walking, mountain-climbing 4) It was presented 82.3% of 244 males and 91.2% of 259 females received stress on duty(p<0.046).
식육의 품질에 관한 연구 1 . 돈육의 pH 가 ( 價 )및 육색에 의한 계절적품질실태에 관하여
채영석,최국지 ( Young Seok Chae,Kook Chi Choi ) 한국축산학회 1979 한국축산학회지 Vol.21 No.4
Measurements of porcine muscle pH and color estimates at 25 minutes post mortem on the porcine muscle as a rapid parameter to find out the incidence of abnormal PSE porcine muscles, were taken in a total of 465 commercial pig carcasses at the domestic animal slaughter plant in Chuncheon, Investigations were made on the M. Longissimus in the last rib and the M, Semimembranosus. Wide differences were recorded in each season in the distribution of below pH 6.0 . The mean range was 15.9% in summer and 7.5% in winter, The correlation between sex and the distribution of pH value was found to be significantly negligible and that of the pH measured in LD and SM muscle on one individual was also significantly negligible (r=0.624). The correlation between muscle color and pH value was significantly nigh, LD=p$lt;0.01 r=0.2, SM=p$lt;0.001, r=0.95 in the summer especially. Carcass weight and pH value on the correlation were significantly high (LD. r=0.89, p$lt;0.001, SM. r=0.84, p$lt;0.001). But the correlation of muscle color to sex and muscle color to breeds on phenotype was significantly negligible.