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- 저자 : 吳允培 (검색결과 8 건)
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불소처리한 합성 Hydroxyapatite가 Streptococcus mutans와 Streptococcus sanguis의 자당발효에 미치는 영향에 관한 생체외 연구
오윤배,김수남 원광대학교 치의학연구소 1991 圓光齒醫學 Vol.1 No.2
1% and 2% NaF solutions were made of buffer solutions which pH range was from pH 3.4 to pH 5.8. Synthetic hydroxyapatite(Sigma, type Ⅲ) 0.5me was immersed in the NaF solution for 15hrs, and then collected by centrifuging. BHI broth-grown S. mutans 10449 and S.sanguis 10556 were added to 40% sucrose and 02% beef extract medium with the precipitate. After incubation for 15hrs at 37℃, the final pH of medium was measured by pH meter. The final pH of 1% NaF group was from pH 5.11 pH 5.77, and that of 2% NaF group was from pH 4.63 to pH 5.95. The final pH of control was pH 3.86. Therefore, fluoride-applicated hydroxyapatite inhibited the sucrose fermentation by S. mutans and S. sanguis in vitro. The most of CaF_2 seemed to washed away during the centrituging. The inhibitory effect of 1% NaF solution was greater than 2% NaF solution under pH 5.0, and the difference of inhibitory effect between pH was greater in 2% NaF group. From these results was made a hypothesis that fluoroapatite formation by flouride application increased as the pH fluoride solution rised and the concentration of fluoride solution decreased.
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韓國人 大學生들의 一側優位性(左右差 : 手·足·體·眼)에 관한 硏究
吳允培,朴淳永,尹錫昌 慶熙大學校 1988 論文集 Vol.17 No.-
This study is from August lst. of 1987 to Nat 25th. 1988. The subjects of study consists of students in general who are in attendance at university and all samples are selected at random. The total number of subjects counts to 282(male : 122, female : 160) and the researcher measures and analyses the subjects' physique, physical strength, the test of dominance eye, the functional tests of hand, foot, body and eye. The results as follows: 1. Physical growth and development Mean values of body height are 172.86±1.37㎝ for male and 160.99±1.33㎝ for female and superior to standard values of Korean. Mean values of body weight are 65.86±1.50㎏ for male and 52.54±0.81㎏ for female, and the mean values of chest girth are 94.93±1.50㎏ for male and 52.54±0.81㎏ for female, and the mean values of chest girth are 94.93±2.04㎝ for male and 83.83±0.91㎝ for female. Mean values of sitting height are 93.24±1.19㎝ for male and 85.83±0.71㎝ for female. 2. Physical fitness Mean values of grip strength are 46.77±6.41 for right and 45.18±0.91 for left side in male and 28.26±1.78 for right and 30.12±2.46 for left in female. Mean values of arm strength are 26.08±1.99 for right and 28.41±2.34 for left in male and 19.08±0.75 for right and 20.54±0.87 for left in female. Mean values of leg strength are 43.37±1.58 for right and 47.50±5.26 for left in male and 26.73±1.37 for right and 28.84±1.60 for left in female. 3. Functional rate of foot, trunk, eye and hand As considered according to its function, the rates of right foot, left foot, both of feet in both of male and female, the total rates are each of 39.1%, 46.1%, 5.1% for male and 53.0%, 32.1%, 4.3% for female. The rates of right eye, left eye, both of eyes in both of male and female, the total rates are each of 53.3%, 20.8% 22.7% for male and 51.5%, 23.95%, 15.2% for female. The rates of right eye, left eye, both of eyes in both of male and female, the total rates are each of 84.5%,10.4%, 2.2% for male and 83.3%, 11.9%, 2.0% for female. 4. Tests of dominance eye As considered according to tests of dominance eye, the results of right eye, left eye in both of male and female, the results are each, 30.3% for male and 57.5%, 42.5% for female.
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모친의 사회경제적 요인과 구강건강신념이 아동의 구강보건행태에 미치는 영향에 관한 연구
오윤배,이흥수,김수남 원광대학교 치의학연구소 1994 圓光齒醫學 Vol.4 No.2
The aim of this study was to examine the effect of mothers' socioeconomic factors and dental health beliefs on children's dental health care behavior. One thousand, nine hundred seven children and their mothers were selected for the study. The children were fourth grade to sixth grade in elementary schools in Iri city, Korea. Using the "Health Belief Model" a questionnaire was constructed and administered to samples. In this study, the health belief model consist of "perceived susceptibility", "perceived seriousness", "perceived barrier", "perceived salience", and "perceived benefit". Stepwise multiple regression analysis and path analysis was used for analysis techniques. The effects of the elements affecting the dental health behavior of children were classified into direct effects, indirect effects, and total effects. The independent variables used for analysis were mothers' dental health beliefs and the fifteen socioeconomic factors, and the dependent variables were children's dental health beliefs, tooth brushing frequency, and frequency of dental visit. The findings of analysis can be summarized as follows 1. The susceptibility for dental illness and the frequency of dental visit were higher in children whose mothers have job. 2. The children's susceptibility, seriousness for dental illness and barrier for dental treatment were negatively associated and their frequency of dental visit were positively associated with mothers' education level. 3. The children's susceptibility, seriousness and barrier were negatively associated and their toothbrushing frequency positively associated with education level of householders. 4. The family's propensity to save had a significant negative relationship with children's susceptibility, seriousness, dental visit and was positively associated with children's barrier, salience, toothbrushing frequency. 5. The children's benefit, salience and seriousness were positively associated with socioeconomic status(job) of housholder. 6. The children's susceptibility, seriousness, and dental visit were negatively associated and their salience were positively associated with number of children. 7. The household income of mother was positively associated with children's benefit, salience and seriousness. 8. The mothers' susceptibility showed the positive association with children's dental visit. 9. The mothers' health beliefs were significantly associated with their children's health beliefs.
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5-Hydroxytryptamine Measurement using Paired Pulse Voltammetry
장동표,김수영,오윤배,신호진,김인영,Kevin Bennet,Kendall H. Lee,김도형 대한의용생체공학회 2013 Biomedical Engineering Letters (BMEL) Vol.3 No.2
Purpose Although paired-pulse voltammetry (PPV) has significantly reduced the effects of confounding factors such as pH changes, its appliance has been limited to triangular waveforms. Here, we extend PPV to N-waveform, known to be effective in differentiating serotonin (5-HT) from other analytes. Methods Unlike previous PPV that employs a triangular binary waveform with a specified time gap between the comprising pulses, this study experiments PPV with Nwaveform. N-waveform, the most conventional waveform for detecting 5-HT, sweeps from 0.2 V to 1.0 V to -1.0 V and back to 0.2 V at a sweep rate of 1000 V/s, while the electrode is held at a holding potential of +0.2 V between the voltammetric pulses. After experimenting with various gap times (2 ms, 10 ms, 30 ms, and 45 ms), N-shape PPV was optimized to the parameter of 100 ms repetition time (2 Hz)and 2 ms gap time that displayed the highest sensitivity. 5-HT measurement was performed with a carbon fiber microelectrode placed in the flow cell. PPV data was collected with the Wireless Instantaneous Neurochemical Concentration Sensing System. Results At the optimized parameter, the oxidation peak in secondary pulse of N-waveform PPV recorded about 68% of the peak of the primary pulse. In addition, the fitting of peak currents in primary, secondary, and primary-secondary in Nshape PPV in relation to the concentration level between 0.25 μM to 2 μM displayed high reliability (R-squared values = 0.9823, 0.9895, 0.9914, respectively). When 5-HT 3 μM and 0.1 ΔpH is mixed, the 10 nA artifact created by 0.1ΔpH in P-S voltammogram was almost completely removed while the oxidative peak by 5-HT was detected. Conclusions These results demonstrate that N-shape PPV will enable more accurate measures of real-time serotonin changes, especially in complex environment.
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