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Bovine-derived Xenograft가 치주 골내낭 치유에 미치는 영향
김영택,채경준,정의원,이용근,조규성,채중규,김종관,최성호,Kim, Young-Taek,Chae, Gyung-Joon,Jung, Ui-Won,Lee, Yong-Kun,Cho, Kyoo-Sung,Chai, Jung-Kiu,Kim, Chong-Kwan,Choi, Seong-Ho 대한치주과학회 2007 Journal of Periodontal & Implant Science Vol.37 No.3
The ultimate goal of periodontal treatment is to regenerate the lost periodontal apparatus. Many studies were performed in developing an ideal bone substitute. Anorganic bovine-derived xenograft is one of the bone substitute, which were studied and have been shown successful for decades. The aim of this study is to evaluate the effect anorganic bovine-derived xenograft. Total of 20 patients, with 10 patients receiving only modified widman flap, and the other 10 receiving anorganic bovine-derived xenograft and flap surgery, were included in the study. Clinical parameters were recorded before surgery and after 6 months. The results are as follows: 1. The test group treated with anorganic bovine-derived xenograft showed reduction in periodontal pocket depth and clinical attachment level with statistically significance(p<0.001) after 6 months. The control group treated with only modified Widman flap showed reduction only in periodontal pocket depth with statistically significance(p<0.001) after 6 months. 2. Although periodontal probing depth change during 6 months did not show any significant differences between the test group and the control group, clinical attachment level gain and re-cession change showed significant differences between the two groups(p<0.05). On the basis of these results, anorganic bovine-derived xenograft improves probing depth and clinical attachment level in periodontal intrabony defects. Anorganic bovine-derived xenograft could be a predictable bone substitute in clinical use.
우리나라 초ㆍ중ㆍ고등학교 학생의 비누로 손씻기 실천 및 관련요인
양남영(Yang, Nam Young),이무식(Lee, Moo-Sik),황혜정(Hwang, Hae-Jung),홍지영(Hong, Jee-Young),김병희(Kim, Byung-Hee),김현수(Kim, Hyun-Soo),홍수진(Hong, Su-Jin),김은영(Kim, Eun-Young),김영택(Kim, Young-Teak),박윤진(Park, Yun-Jin) 한국보건간호학회 2014 韓國保健看護學會誌 Vol.28 No.2
Purpose: This study was conducted in order to prove related practice factors of handwashing with soap and its practices by students in South Korea. Method: The subjects consisted of 700 students. Data were collected in Sep 2013 and were analyzed using descriptive statistics, chi-square test, and logistic regression analysis. Results: Total number of handwashing times was 7.5 per day. 65.1% of the students used soap and most of the students washed their hands for 20 seconds(31.1%). Self-evaluation, awareness of effect for prevention of infectious disease, and need for handwashing education were positive, but evaluation of toilet environment was negative. Most of the students washed their hands for 21 seconds(%), and methods of handwashing were not appropriate. Level of awareness was over 85% in most items. Practice differed significantly according to locations, pattern of school, self-evaluation, awareness of effect for prevention of infectious disease, need for education handwashing, and toilet environment. Conclusion: These findings indicate that the students learned methods of handwashing for its practice in South Korea, and they were considered as general characteristics of handwashing from students. In addition, results mentioned above will be reflected in development of educational programs for improvement of handwashing efficiency.
Temporal Logic에 대한 그래프 모형 : Concurrent 프로그램의 자동생성 및 검증을 위한 도구
김영택(Young Taek Kim),고건(Kern Koh),이정태(Jeong Tae Lee),최경희(Kyung Hee Choi) 한국정보과학회 1988 정보과학회논문지 Vol.15 No.2
본 논문에서는 [3]에서 제안된 그래프 모형을 마크함으로써 eventuality성질을 보다 분명히 표현할 수 있도록 그래프 모형을 구성하는 방법과, 구성된 그래프 모형의 간소화 알고리즘을 제안하였다. 또한 두 개의 프로세스와 synchronizer로 구성된 문제에서 Propositional Temporal Logic으로 표현된 프로그램 사양의 그래프 모형을 구성하고, 그래프 모형이 프로그램의 합성 및 사양의 검증에 이용될 수 있음을 보였다. In this paper, for representing eventuality property of PTL (propositional temporal logic), We extend the graph model [3], and we give the minimization algorithm for the extended graph model. The extension is made by giving node marking and marked node visiting rule to the graph model. As an example, we construct the extended graph model from the PTL specifications which specify the system of two processes and a synchronizer satisfying mutual exclusion.