Congenital Upper Lip Sinus Found in Adolescent Patient: A Case Report

정한주,강석주,김진우,선욱,Jung, Han Ju,Kang, Seok Joo,Kim, Jin Woo,Sun, Hook Korean Cleft Palate-Craniofacial Association 2012 Archives of Craniofacial Surgery Vol.13 No.1

Purpose: Congenital sinus of the upper lip is extremely rare and only 3 cases have been reported domestically. We report a case of congenital sinus of midline upper lip, which was found in an adolescent patient. Methods: A 14-year-old girl presented with a small pit on midline of the upper lip, which was visible at birth. The patient had never been treated for the congenital sinus because it was asymptomatic. Surgical excision under local anesthesia was performed. Results: The sinus had a tract extending into 5 mm posteroinferior and had not penetrated the oral cavity. Histological examination showed a fistulous tract lined by keratinized squamous epithelium. After complete excision, there was no recurrence and we obtained a satisfactory cosmetic result. Conclusion: Congenital sinus of the midline upper lip is extremely rare. This is a special case that is reported because it did not cause symptoms for the patient until she reached adolescence.

담배 경도에 관한 연구(II) 상대습도, 온도 및 진충량이 담배의 경도에 미치는 영향

정한주,민영근,김병구,김기환 한국연초학회 1991 한국연초학회지 Vol.13 No.1

This experiment carried out to review influence of relative humidity, temperature and net weight on cigarette hardness for the uniformal control of cigarette quality. Obtained results are as follows: 1. The difference in the cigarette physical properties of constant hardness control is considerably lower than that of constant net weight control. 2. Contribution rate for cigarette hardness is relative humidity > net weight > temperature. 3. The multiple regression equation of cigarette hardness related with relative humidity, temperature and net weight is calculated as follows.

치사

정한주,Jeong, Han-Ju 대한산업보건협회 1984 산업보건소식 Vol.3 No.-

수질오염공정시험기준의 총 유기탄소 분석방법에 대한 고찰

정한주,신태섭,이학수,조남준 한국분석과학회 2022 학술대회논문집 Vol.2022 No.5

적정수분 관리를 위한 담배흡습속도에 관한 연구

정한주,김기환,민영근,김병구,양광규,오인혁 한국연초학회 1993 한국연초학회지 Vol.15 No.1

1. Average moisture content of tobacco in BIB silo was about 19: 1% until 4hours conditioned time, and then moisture variation of tobacco after 2hr conditioned was very small. 2. Application of mathematical model for ordering system. 1) The constant K in the exponential equation varies inversely with both relative humidity and equilibrium moisture. 2) Time needed to order blending tobacco leaves with standard moisture from bulking and blending silo was 4 hours. 3) Reconstituted tobacco sheet had higher moisture absorption ratio than Oriental and Burley tobacco. 4) For minimize of conditioning time in BIB silo, the values of K and Mo given in this study can be used in equation(1) to calculate moisture absorption ratio and optimum conditioning time. 3. Average moisture content and water activity of conditioned tobacco for 4 hours in BIB silo was about 20% and 0.65. In this condition. microbial life will inhibite 4. Physical properties of conditioned tobacco in bulking and blending silo for 4hours was virtually no change.

수분 함량별 부풀성 보정식 설정

정한주,김용옥,Chung Han-Joo,Kim Yong-Ok 한국연초학회 2005 한국연초학회지 Vol.27 No.1

To correct the difference of filling volumn for various cut tobacco and puffed stem according to moisture contents, correction equation was estamated by a simple regression analysis. The $R^2$(coefficient of determination) of correction equation was above 0.95. To verify the precision of correction equation, we predicted correction equation of other samples. The filling volumns by the difference of $1\%$ moisture content were $0.018\;~\;0.022cc/g$ (cut tobacco) and 0.060cc/g (puffed stem). The precision of correction equation for various cut tobacco was very high, but that of puffed stem was low due to quality deviation of row stem according to a season.

관골 단독 골절에서 안구 용적 변화의 정량적 분석

정한주,강석주,김진우,김영환,선욱 대한성형외과학회 2011 Archives of Plastic Surgery Vol.38 No.6

Purpose: The zygoma (Zygomaticomaxillary) complexes make up a large portion of the orbital floor and lateral orbital walls. Zygoma fracture frequently causes the posteromedial displacement of bone fragments, and the collapse or overlapping of internal orbital walls. This process consequently can lead to the orbital volume change. The reduction of zygoma in an anterolateral direction may influence on the potential bone defect area of the internal orbital walls. Thus we performed the quantitative analysis of orbital volume change in zygoma fracture before and after operation. Methods: We conducted a retrospective study of preoperative and postoperative three-dimensional computed tomography scans in 39 patients with zygoma fractures who had not carried out orbital wall reconstruction. Orbital volume measurement was obtained through Aquarius Ver. 4.3.6 program and we compared the orbital volume change of injured orbit with that of the normal contralateral orbit. Results: The average orbital volume of normal orbit was 19.68 cm3. Before the operation, the average orbital volume of injured orbit was 18.42 cm3. The difference of the orbital volume between the injured orbit and the normal orbit was 1.18 cm3 (6.01%) on average. After operation, the average orbital volume of injured orbit was 20.81 cm3. The difference of the orbital volume between the injured orbit and the normal orbit was 1.17 cm3 (5.92%) on average. Conclusion: There are considerable volume changes in zygoma fracture which did not accompany internal orbital wall fracture before and after operation. Our study reflects the change of bony frame, also that of all parts of the orbital wall, in addition to the bony defect area of orbital floor, in an isolated zygoma fracture so that it evaluates orbital volume change more accurately. Thus, the measurement of orbital volume in isolated zygoma fractures helps predict the degree of enophthalmos and decide a surgical plan.

버어리 잎담배의 적정 토스트 가동 조건 설정

정한주,김용옥 한국연초학회 2004 한국연초학회지 Vol.26 No.1

The quality of burley leaf tobacco was affected by various toasting conditions. In this study, we determined main factor to influence the quality of burley tobacco on toasting and established proper toasting condition to improve the quality of toasted tobacco. Our results indicated that the main factor to influence the quality of burley tobacco was the amount of treatment and 3rd drying zone temperature. We also found that the proper toasting conditions to improve the quality of toasted tobacco and reduce the smoking irritation were moisture content (34 %), amount of treatment (1,520kg/hr), 1st drying zone temperature (135$^{\circ}C$), 2nd zone drying temperature(145$^{\circ}C$) and 3rd zone drying temperature (147$^{\circ}C$).

CFD를 이용한 가향 탱크 내부 유동에 관한 연구

정한주,조성일,양진철,Chung, Han-Joo,Cho, Sung-Eel,Yang, Jin-Chul 한국연초학회 2010 한국연초학회지 Vol.32 No.2

In the chemical, mineral and electronics, mechanically stirred tanks are widely used for complex liquid mixing processes. The paper present results from a computational fluid dynamics (CFD) model for the mixing tank in casing process. We used CFD software, FLUENT(Fluent, Inc, Lebanon, NH, version 6.2). A species transport model was used to model the problem. The flow patterns in a mixing tank, 1.6 m in diameter and 2.0 m in height, were studied using CFD. Numerical analysis results show that improved mixing tank was reduced low speed flow region and turbulent region in internal flow of mixing tank.

Correlation between academic achievements and admission criteria at the School of Dentistry, Chonnam National University

정한주,이은주,김민석 조선대학교 치의학연구원 2019 Oral Biology Research (Oral Biol Res) Vol.43 No.4

This study analyzed the correlation between academic achievements and admission criteria at the School of Dentistry, Chonnam National University, to formulate suggestions to improve the admission criteria. The study population comprised 268 students admitted to the School of Dentistry between 2012 and 2015 who had completed at least one academic year. Academic achievements according to gender, age, former school, and recruitment differences (early/regular) were analyzed using a t-test. Dental Education Eligibility Test (DEET) score, Grade Point Average (GPA), Test of English Proficiency developed by Seoul National University (TEPS) score, and interviews were analyzed using Pearson’s product moment correlation coefficients. The t-test results showed statistically significant differences in academic achievements according to gender and recruitment differences; girls and early admission-passed students performed better than boys and regularly-passed students. There was no statistically significant difference in academic achievements based on students’ age and former school. GPA and DEET scores showed a significant correlation between academic achievements and admission criteria, while the TEPS and interview scores did not. There were also statistically significant differences in academic achievements based on gender and recruitment differences. These results can be used to better select outstanding students in the future.