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김정회(Kim, Jeong Hoi),김동현(Kim, Dong Hyun),박영식(Park, Young Shik) 한국콘크리트학회 2021 한국콘크리트학회 학술대회 논문집 Vol.33 No.2
본 연구는 고강도 콘크리트 제작을 위해 사용되는 고가의 실리카퓸을 사용하지 않고, 고강도 콘크리트를 제작하기 위해 원심성형 공정 활용에 필요한 콘크리트 물성을 확보하기 위한 배합연구이다. This study is a mixing study to secure concrete properties necessary for the use of centrifugal molding processes for high-strength concrete production.
김정회,진태호,동진근,Kim, Jeong-Hoi,Jin, Tai-Ho,Dong, Jin-Keun 대한치과보철학회 1995 대한치과보철학회지 Vol.33 No.1
This study was designed to investigate the effect of Gibson's smile exercise. The author took the smile photographs of 35 university students who appeared unnatural smiles though they had good dentition or well restored state of their teeth. The author explained Gibson's smile exercise and they trained their perioral muscles during 4 weeks at home. The smile photographs were taken at regular intervals, before the smile exercise, 2 weeks after and 4 weeks after the smile exercise. And then, esthetic smile scores were estimated by 10 appraisers who were dentists. Some questionares were taken aftersmile exercise. And acquired scores were analized statistically using the SPSS program. The results obtained were as follows. 1. The smile scores of 2 weeks after and 4 weeks after the smile exercise were higher than before the smile exercise. 2. The smile scores of 4 weeks after the smile exercise were higher than 2 weeks after the smile exercise. 3. The smile scores of the group interested in smiles were higher than the group not interested in smiles at 2 weeks after and 4 weeks after the smile exercise, but before the smile exercise there was no difference between two groups.