The prediction of the tooth size in the mixed dentition for Korean

Moon, Sung-Hwan,Kim, Seong-Oh,Yu, Hyung-Seong,Choi, Byung-Jai,Choi, Hyung-Jun,Lee, Jae-Ho 大韓小兒齒科學會 2006 大韓小兒齒科學會誌 Vol.33 No.2

이번 연구의 목적은 혼합치열기 아동에서 미맹출된 견치와 소구치의 크기를 예측하는데 있어서 한국인에 맞는 방정식을 만들기 위함이다. 미맹출 치아의 크기를 예측하는 것은 혼합치열기 교정 진단과 치료계획 수립에 있어서 매우 중요하다. 미맹출된 견치와 소구치 크기를 예측하는 방법은 몇가지가 있지만 그중에서도 가장 흔하게 쓰이는 것이 모이어의 예측표와 다나카와 존스턴의 방정식이 있다. 하지만 그것들은 백인을 위해서 제작된 것이고 치아 크기는 인종에 따라서 다르다고 알려져 있다. 이번 연구에서는 치아크기를 측정하여 하악 영구 절치의 크기 합과 견치 및 소구치의 크기 합 사이의 상관관계를 구하고 회귀방정식을 이용해서 한국인에 맞는 예측표를 만들었다. 연세대학교 치과대학에 재학중인 178명의 한국 학생(남 108명, 여 70명, 평균연령 21.63)을 대상으로 실험하였다. 영구치의 근원심 폭경을 석고모형상에서 calipers를 이용해서 측정하였다. 성별간의 치아 크기는 차이가 있었다(p<0.05). Correlation coefficient는 0.57에서 0.64의 범위였고, standard errors of the estimates 는 여성에서 0.6으로써 남성보다 우수하였다. r^(2)값은 0.27에서 0.41의 범위를 나타내었다. Estimating the size of unerupted teeth is an essential aspect of orthodontic diagnosis and treatment planning in the mixed dentition. Several methods were introduced and used for the prediction. The most common methods among these would be Moyers probability chart and Tanaka and Johnston equations. These are currently used widely, but they were developed for Caucasians. Because there are clear racial differences in teeth size, the objectives of this study were to produce correlation coefficients between the combined mesiodistal widths of the permanent mandibular incisors and those of the canines and premolars for each quadrant, and prediction tables with regression equations, specifically for Korean. 178 young adults (70 women, 108 men, mean age 21.63 years) were selected from the College of Dentistry, Yonsei University, Seoul, Korea. The mesiodistal crown diameters of the permanent teeth were measured with calipers. Significant sexual dimorphism was found in tooth sizes. The correlation coefficients between the total mesiodistal width of the mandibular permanent incisors and those of the maxillary and mandibular canines and premolars were found to be between 0.52 and 0.64. The standard error of the estimatation was better (0.60) for women and the r^(2) values ranged from 0.27 to 0.41 for both sexes, Prediction tables were prepared for Korean. This study showed larger canine and premolar diameters than Tanaka and Johnston's and Moyers' studies which might be due to the racial differences. Further investigations with a larger sample size will be needed for more representative data on the Korean population.

서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

Bucillamine prevents cisplatin-induced ototoxicity through induction of glutathione and antioxidant genes

Kim, Se-Jin,Ho Hur, Joon,Park, Channy,Kim, Hyung-Jin,Oh, Gi-Su,Lee, Joon No,Yoo, Su-Jin,Choe, Seong-Kyu,So, Hong-Seob,Lim, David J,Moon, Sung K,Park, Raekil Nature Publishing Group 2015 Experimental and molecular medicine Vol.47 No.2

<P>Bucillamine is used for the treatment of rheumatoid arthritis. This study investigated the protective effects of bucillamine against cisplatin-induced damage in auditory cells, the organ of Corti from postnatal rats (P2) and adult Balb/C mice. Cisplatin increases the catalytic activity of caspase-3 and caspase-8 proteases and the production of free radicals, which were significantly suppressed by pretreatment with bucillamine. Bucillamine induces the intranuclear translocation of Nrf2 and thereby increases the expression of γ-glutamylcysteine synthetase (γ-GCS) and glutathione synthetase (GSS), which further induces intracellular antioxidant glutathione (GSH), heme oxygenase 1 (HO-1) and superoxide dismutase 2 (SOD2). However, knockdown studies of HO-1 and SOD2 suggest that the protective effect of bucillamine against cisplatin is independent of the enzymatic activity of HO-1 and SOD. Furthermore, pretreatment with bucillamine protects sensory hair cells on organ of Corti explants from cisplatin-induced cytotoxicity concomitantly with inhibition of caspase-3 activation. The auditory-brainstem-evoked response of cisplatin-injected mice shows marked increases in hearing threshold shifts, which was markedly suppressed by pretreatment with bucillamine <I>in vivo</I>. Taken together, bucillamine protects sensory hair cells from cisplatin through a scavenging effect on itself, as well as the induction of intracellular GSH.</P>

중부지역 옥수수 파종기에 따른 생육단계 및 수량성 변화

서종호, 문중경, 정건호, 서민정, 구자환, 박장환, 배환희, 신성휴, 권영업 忠北大學校 農業科學硏究所 2014 農業科學硏究 Vol.30 No.2

Maize hybrids were planted on April 1, April 25, May 20 and June 15 in 2012, 2013 at the experimental paddy and upland fields in Suwon city , respectively to know changes of growth stage and yield according to different planting time. Maize planting on April 1 was not recommended because total growing days at planting on April 1 was not different with that at planting on April 25 due to many days from planting to emergence over 20 days at planting on April 1. Total growing days were not much different among three planting time after April 25 because days from silking to maturity was lengthened though days from planting to silking was shortened at later planting time. Stalk weight was decreased as planting time was delayed, particularly at planting times after May 20 at paddy field by excess water injury during early growth stage. But, grain yield was not low as in May and June. It is needed to introduce early maturity maize variety as Yanganok at late planting for higher grain yield and enough time for soil preparation for next winter crops

PTFE 이식편을 이용한 대퇴동맥과 슬관절이하 동맥 우회로술의 결과 분석

문성민,손민수,이길연,이상목,고석환,홍성화,윤충,오수명,박호철 대한혈관외과학회 2004 Vascular Specialist International Vol.20 No.1

熟地黃의 製造方法에 따른 消化作用에 관한 比較硏究

文聖皓,李暎鍾 대한본초학회 2001 大韓本草學會誌 Vol.16 No.2

Rehmanniae Radix preparata comes to be known that causes dyspepsia. The purpose of this study is to recognize the influence on the digestive function when Rehmanniae Radix preparata produced through different processes. The rats are divided 4 groups[dosed saline, dosed Rehmanniae Radix(dried), dosed Rehmanniae Radix preparata steamed 9 times, or dosed Rehmanniae Radix preparata steamed 9 times and added with Crataegi Frutus at final processing step]. By checking intake, output, and change in body weight, their digestive rates were figured. The results were such as the followings : 1. All the groups dosed Rehmanniae Radix(dried), Remanniae Radix preparata(steamed 9 times), and Rehmanniae Radix preparata (steamed 9 times and added with Cretaegi Fructus at final step) have no influence on the amount of diet and feces. 2. Both groups dosed Rehmanniae Radix preparata (steamed 9 times) and Rehmanniae Radix preparata (stream 9 times and added with Crataegi Fructus at final step) have no influence on the changes in body weight, but the group dosed Rehmanniae Radix (dried) reduces weight gain compared with others. 3. The group dosed Rehmanniae Radix(dried) shows decreased digestive rate of fats, proteins, and carbohydrates compared with others. 4. The group dosed Rehmanniae Radix preparata(steam 9 times) has no influence on the digestive rate of fats, but shows decreased digestive rate of proteins and carbohydrates. Compared with the other group dosed Rehmanniae Radix(dried), the group shows increased digestive rate of fats, proteins, and carbohydrates. 5. The group dosed Rehmanniae Radix preparata (steamed 9 times and added with Crataegi Fructus at final processing step) has no influence on the digestive rate of fats and proteins, but shows decreased digestive rate of carbohydrates. Compared with the other group dosed Rehmanniae Radix preparata(steamed 9 times), the group shows increased digestive rate of proteins and carbohydrates. These results suggests that Rehmanniae Radix preparata (steamed 9 times) is more digestive than Rehmanniae Radix(dried). Also Rehmanniae Radix preparata (steam 9 times and added with Crataegi Fructus at final step) is more digestive than Rehmanniae Radix preparata(steam 9 times) especially for proteins and carbohydrates.

생활체육지도자의 이직의사에 관한 조사 연구

성영호,신문형,박재홍 龍仁大學校 1999 용인대학교 논문집 Vol.17 No.-

The purpose of this study was to examine the factors that influence voluntary tunovers among leaders who are employed in Leisure and sports. The factors were found to he external, job - related, and personal. A survey was administered to 218 leaders of the following organizations that studied at Yong - in University, to success a third class leader in Leisure and sports with man 151 persons and female 67 ant 1988. A questionaire was designed to establish the causal factors of Yang - Jin Hawn(1992), Park - Se Hong(1994), Jun - Chan yol(1994), Lee - Ki Hyo(1995) in leisure and sports. The questionnaire had a high index in the Cronbach'a = 6485 ~ 8911 test. These surveys were cpmpleted using self - administration method. First, to analyze the data for the study, the frequencies, t-test, one -way ANOVA was sued to analyze the collected data. The results of this study were as fellows : First, the external factors associated with voluntary turnovers had not a stronger impact on the sex, education, prestige, salary on the decision. Second, the joh - related factors associated with voluntary turnovers has net friedship satisvaction and productivity. Third, the personal factors associated with voluntary turovers has not a stronger impact on turnover rate than job' opportunity.

공간전압벡터 PWM 기법을 이용한 유도전동기 구동특성 해석

문상호,오성보 濟州大學校工科大學産業技術硏究所 1999 尖端技術硏究所論文集 Vol.10 No.1

This paper describes the driving characteristics of induction motor using the Space Voltage Vector Pulse Width Modulation(SVPWM) and Sinusoidal Pulse Width Modulation(SPWM) method. We understand the characteristics of two PWM method applied the vector control theory to the induction motor equivalent circuit. We compare the SVPWM with SPWM of the current ripple and liner control domain. They are improved by using the SVPWM method. The improved effects are verified by simulation.

공간전압벡터 PWM 기법을 이용한 유도전동기의 고성능 운전에 관한 연구

문상호,오성보 濟州大學校 産業技術硏究所 1999 산업기술연구소논문집 Vol.10 No.2

We study the operating characteristics of induction motor drive using Sinusoidal PWM and Space voltage vector PWM methods. The performance characteristics are discussed with the variablespeed applications. Therefore, the induction machine model can be described by differential equations with time varying coefficients. The d-q dynamic model of a machine can be expressed in either a stationary or a rotating reference frame. We understand the operating characteristics of two PWM method applied the vector control theory. We compare the Space voltage vector PWM with Sinusoidal PWM of the current ripple and liner control domain by computer simulation. So that. they are improved by using the SVPWM method. The improved effects are verified by the experiment.

피부와 외래환자와 일반인의 진균질환 역학조사

문현주,문재동,이지범,김성진,원영호,이승철 全南大醫大 2001 전남의대학술지 Vol.37 No.4