한국 어린이의 골 성숙도와 치아 석회화 단계 간의 상관관계

김성진,송제선,김익환,김성오,최형준,Kim, Seong Jin,Song, Je Seon,Kim, Ik-Hwan,Kim, Seong-Oh,Choi, Hyung-Jun 대한소아치과학회 2021 大韓小兒齒科學會誌 Vol.48 No.3

이 연구의 목적은 한국 아동의 골 성숙 단계와 여러 치아들의 석회화 단계 간의 상관관계를 알아보고자 하는 것이다. 만 6 - 14세의 남아 359명, 여아 384명의 수완부 방사선사진, 측방두부규격 방사선사진, 파노라마 방사선사진을 분석하여 평가하였다. 하악 좌측의 7개 영구치의 치아 석회화 단계는 Demirjian이 제시한 방법에 의해 평가되었다. 골 성숙도 단계를 평가하기 위하여 수완부 방사선 사진은 Fishman이 제시한 skeletal maturity indicators(SMI)에 따라 평가되었고, 측방두부규격 방사선사진은 Baccetti가 제시한 cervical vertebral maturation(CVM) 방법에 따라 평가되었다. Spearman의 순위상관분석을 시행한 결과 치아 석회화 단계와 골 성숙도 간에 유의미하게 높은 상관관계가 나타났다(r = 0.40-0.84, p < 0.001). 7개의 영구치 중에서 하악 제2대구치가 골 성숙도와 가장 높은 상관관계를 보인 반면 중절치가 가장 낮은 상관관계를 나타내었다. 남녀 모두에서 하악 견치의 stage G와 하악 제2대구치의 stage F가 SMI 6단계와 CS 3단계에서 나타날 확률이 가장 높았다. 이 연구의 결과에 따르면 치아 성숙도와 골 성숙도 사이에 높은 상관관계가 있으므로, 파노라마 방사선사진에서의 치아 성숙도 평가는 성장기 아동의 골 성숙도를 평가하는 보조적 수단으로 활용될 수 있다. The aim of this study was to investigate the relationships between the stages of calcification of various teeth and skeletal maturity stages among Korean subjects. The samples were derived from hand-wrist, panoramic radiographs, and lateral cephalograms of 743 subjects (359 males and 384 females) with ages ranging from 6 to 14 years. Calcification of seven permanent mandibular teeth on the left side were rated according to the system of Demirjian. To evaluate the stage of skeletal maturation, hand-wrist radiographs were analyzed by skeletal maturity indicators (SMI) system of Fishman and lateral cephalograms by cervical vertebral maturation (CVM) method of Baccetti. Statistically significant relationships were found between dental calcification and skeletal maturity stages according to Spearman rank-order correlation coefficients (r = 0.40-0.84, p < 0.001). The second molar showed the highest correlation and central incisor showed the lowest correlation for female and male subjects. For both sexes, canine stage G and second molar stage F were related to SMI 6 and CS 3. Because of the high correlation coefficients, this study suggests that tooth calcification stages from panoramic radiographs might be clinically useful as a maturity indicator of the pubertal growth period in Korean patients.

한방의료이용 행태와 이에 영향을 미치는 요인 분석

김성진,남철현,김재돈,김병화,김기열,Kim Sung-Jin,Nam Chul-Hyun,Kim Jae-Don,Kim Byoung-Ha,Kim Gi-Yeol 대한예방한의학회 2004 대한예방한의학회지 Vol.8 No.1

This study was conducted to analyze community residents' behavior of Oriental medicine utilization and its related factors in order to provide basic data for formulation of policies on Oriental medicine. The subjects of this study was 500 residents who lived in big or medium sized cities and towns or villages Data were collected from March, 2002 to June, 2002. The results of this study can be summarized as follows. 1) According to socio-demographic characteristics of the respondents, female was 50.3%; 'over 50 years old' 29.9%, 'over college graduate' 39.7%, 'housewife' 23.0%, 'having spouse' 62.1%, 'Buddhist' 50.8%, 'living in big cities' 59.0%, 'middle economic class' 88.1%. 2) The highest proportion of frequency of Oriental medicine utilization was over 10 times(32.5%). The respondents visited Oriental medicine institutions for taking invigorant(51.1%), treatment of diseases in muscle or bone system(30.8%), treatment of diseases in digestive system(6.3%), etc. 3) According to the reasons of utilizing Oriental medicine, the proportion of good effect was highest(36.3%). 66.8% of the respondents replied that Oriental medical fee was expensive, while 0.8% of them replied that it was not expensive. 33.3% of them thought it was proper. 4) 35.5% of the respondents replied that treatment by Oriental medicine could cause side effect and 40.3% of them replied that the side effect could be caused by taking herb medicine. 5) 62.8% of the respondents replied that they would continuously receive opinions on Oriental medicine. The score of knowledge level of treatment by Oriental medicine $6.25{\pm}2.82$ points on the basis of 14 points. 6) The variables significantly influencing utilization of Oriental medicine includes taking diseases, living in big cities, male, upper (economic class, having religion, and effect of Oriental medicine. 7) The factors affecting effect of herb medicine were effect of treatment by Oriental medicine, marital status, knowledge level of Oriental medicine, having diseases, and frequency of receiving the treatment.

Planetary milling에 의한 $TiN_x$의 제조

김성진,김동식,라노,박성범,권원일,김문협,우흥식,안중호,Kim, Sung-Jin,Kim, Dong-Sik,Rahno, Khamidova,Park, Sung-Bum,Gwon, Won-Il,Kim, Moon-Hyup,Woo, Heung-Sik,Ahn, Joong-Ho 한국결정성장학회 2005 한국결정성장학회지 Vol.15 No.3

[ $TiN_x$ ] powder have been fabrication by making of reaction between titanium powder and $Si_3N_4$ bowl during a planetary milling. Milling times were maintained for 1 hour, 5 hours, and 10 hours, respectively. The XRD result showed existence of non-stoichiometric compound of $TiN_{0.26}$ after 5 hours milling and coexistence of TiN with $TiN_{0.26}$ after 10 hours milling. Particle size distribution was investigated by particle size analyzer and microstructure was analyzed by FE-SEM. The size of titanium was decreased with increasing the milling time and the mean size of $TiN_x$ after 10 hours milling was increased by 200 nm. Planetary milling법을 사용하여 Ti 분말과 $Si_3N_4$ bowl과의 반응을 유도하여 $TiN_x$을 제조하였으며, 이때 milling 시간은 1시간, 5시간, 10시간으로 조정하였다. 시편의 물성평가는 X선 회절분석을 통해 결정상의 변화를 분석한 결과 milling 시간이 5시간이 되면 비화학당량적 화합물인 $TiN_{0.26}$가 먼저 생성되고 10시간의 milling에서는 $TiN_{0.26}$과 TiN이 혼재되어 있는 것으로 확인되었다. 입도분석 및 FE-SEM으로 미세구조 분석을 한 결과, milling 시간이 증가함에 따라 Ti 입자사이즈가 감소하는 것으로 나타났으며, 10시간의 milling에서는 평균사이즈가 200nm의 $TiN_x$를 제조할 수 있었다.

교수(회)의 경영 참가

김성진,Kim, Seong-Jin 한국대학교육협의회 2003 大學敎育 Vol.123 No.-

특별기고-정보화사회의 도전과 한국의 미래

김성진,Kim, Seong-Jin 한국과학기술단체총연합회 1988 과학과 기술 Vol.21 No.4

이리듐 합성물 기반의 인광 고분자 발광 소자

김성진,Kim, Sung-Jin 한국진공학회 2009 Applied Science and Convergence Technology Vol.18 No.4

We herein report on polymer phosphorescent light-emitting devices doped with iridium complex. The emitting layer of poly(N-vinylcabazole) and tris(2-phenylpyridine)iridium was fabricated by low speed dip-coating of 10, $20{\mu}m$/s. The devices showed stable current increasing leakage current at turn-on voltage. Compared to conventional spin-coating based organic light-emitting devices, the driving voltage by dip-coating observed lower values of 5.8 and 6.7 V at the luminance of 100 Cd/$cm^2$. 순방향 전압에서 안정적인 전류 흐름을 가지고 낮은 turn-on 전압으로 구동하는 이리듐 합성물 기반의 인광 고분자 발광 다이오드를 제작하였다. Poly(N-vinylcabazole)와 tris(2-phenylpyridine)iridium 재료를 포함하는 유기 발광층은 $10{\mu}m$/s 와 $20{\mu}m$m/s의 저속도 dip-coating으로 만들었다. 제안한 방법으로 형성된 유기 발광 다이오드는 100 cd/$m^2$의 기준 휘도에서 각각 5.8 V와 6.7 V로 구동이 되었지만, 발광층을 스핀코팅으로 제작된 소자는 다소 높은 전압인 9.1 V를 기록하였다. 본 연구는 대면적, 용액 공정 기반의 고효율 특성을 요구하는 유기 발광 소자에서 발광층의 새로운 박막 형성기술로 이용될 수 있다.

박과식물 종자유의 지방산 조성

김성진,조용계 ( Seong Jin Kim,Yong Goe Joh ) 한국유화학회 1996 한국응용과학기술학회지 Vol.13 No.1

Levels of total, neutral and polar lipids from the seeds of eight species of the Cucurbitaceae family, Cucurbita moschata, Lufa cylindrica, Citrullus vulgari, Cucumis melo var. makuwa, Cucumis satvus, Lagcnaria leucantha, Trichosanthes kirilowii and Momordica charantia, were determined, and their fatty acid compositions were also analyzed by gas-liquid chromatography. The results were summarized as follows : Lipid contents of the seeds range from 21.9 to 50.7%, which contained 98% up of neutral lipids. In the fatty acid composition of total lipids from the seeds of Cucurbita moschata, Lufa cylindrica, Citrulus vulgari, Cucumis melo var. makuwa, Cucumis sativus and Lagenaria leucantha, linoleic acid is the most predominant component (56.8~84.0%) followed by oleic acid(5.7~22.2%) and palmitic acid(6.1~14.0%) with a trace amount of α-linolenic acid(below 0.6%). On the contrary, the seed oils of Trichosanthes kirilowii and Momordica are characterized by presence of considerable amounts of conjugate trienoic acid such as punicic acid(_9c,_11t,_13c-C_18:3) and α-eleostearic acid(_9c,_11t,_13t-C_18:3). For example, the total lipids of T. kirilowii seeds were mainly compose of linoleic acid(40.5%) and punicic acid(34.9%) in the fatty acid composition, while those of M. charantia seeds predominantly comprised α-eleostearic acid as a main component(66.9%), accompanied by oleic acid(11.7%) and linoleic acid(10.4%). In this oil β-eleostearic acid(_9t,_11t,_13c-C_18:3) was checked as a trace. Fatty acid profiles of neutral lipids bear a close resemblance to those of total lipids in all the seed oils, but are different from those of polar lipids. In particular, conjugate trienoic acids including punicic acid and α-eleostearic acid which are occupied as the most abundant component in both neutral lipids of T. kirilowii and M. charantia seed oils, are present in a extremely small amount in both polar lipids. The fatty acid distribution in the polar lipids of all the samples except for T. kirilowii and M. charantia seed oils, showed a tendency of considerably increased level of saturated fatty acids(25.0~29.4%) compared with that in the nertral lipids(9.9~20.6%). The results obtained in this experiment suggest us that the seed oils of the Cucurbitaceae family could be divided into high-linoleic acid class and high-conjugate trienoic acid class.

컵라면 용기의 종이컵 대체

김성진,Kim, Seong-Jin 한국포장학회 1999 한국포장학회지 Vol.5 No.2

After reported that Styrene dimer and Styrene trimer was Endocrine Disrupter, if it was a fact or not, the sales of PSP noodle cup was rapidly decreased and social responsibilities of the substitution materials development was raised. Therefore we had studied many materials like paper, pulp mold, PP injection molding, PP lamination, etc as substitution materials and selected paper cup which was safe in many sides and easy to recycle. Mainly we had checked the shape, safety, stability and recycling possibility of paper cup and secured many data which could prove them.

한국의 우수한 디지털콘텐츠 동유럽시장 개척에 나섰다

김성진,Kim, Seong-Jin 한국데이터베이스진흥원 2005 디지털콘텐츠 Vol.8 No.-

한국소프트웨어진흥원은 6월23일부터 25일까지 헝가리 부다페스트에서 개최된 동유럽 전문방송프로그램 전시회인‘DISCOP 2005’에 한국관을 열어 한국의 디지털콘텐츠 홍보와 수출상담을 진행했다. DISCOP 2005는 중부유럽을 포함한 동유럽 지역의 방송 프로그램 · 필름·애니메이션 · 모바일 콘텐츠 및 포맷을 거래하는 유일한 국제 영상 콘텐츠 전시회로 평가된다. 올해 공식 참가자는 989명으로 전년대비 27% 상승했고, 배급사는 238개로 전년대비 42% 증가했다. 참가 바이어의 수도 전년대비 34% 상승한 534명으로 DISCOP가 세계적인 국제 전시회로 정착돼 가고 있다.

芸香科 ( 운향과 ) 식물 종실의 항산화성 물질에 관한 연구

김성진,김지수,조영계 ( Seong Jin Kim,Ji Soo Kim,Yong Goe Joh ) 한국유화학회 1994 한국응용과학기술학회지 Vol.11 No.1

Some seeds of the Rutaceae family, Zanthoxylum piperitum, Z. schinifolium, Evodio officinalis. Poncirus trifoliata, Citrus unshiu, were investigated to clarify their antioxidative components. Finely powdered samples were extracted by hexane, followed by dichloromethane and then 70% methanol in a hot bath. Its unsaponifiables containing α-and y-tocopherol with trace amount of β-and δ-tocopherol also showed comparatively weak activity. Levels of total tocopherols in the samples averages 42. 24-154. 11 mg/100g total extractives. The dichloromethane-and 70% methanol extractives showed strong antioxidative activity, from which antioxidative substances were purified with benzene-acetone(6 : 5. V/V) on a silica gel column, and with a solvent mixture of acetonitrile-methanol-H_2O(40 : 40 : 20, V/V/V) on a Sep-Pak C_18 hydrolyzed by 5% KOH-ethanol. The recovered unsaponifiables were then, separated on a column of high performance liquid chromatography. The unsaponifiables produced by hydrolysis of the isolates from dichloromethane extractives has epi-catechin(40.0~57.1%) and (+)-catechin(19.1~24.4% to total phenolic substances, on area base) as major component, accompanied by chlorogenic acid, gallic acid(?), trans-p-coumaric acid and trans-p-ferulic acid including some unknown components, and those derived from 70% methanol extractives also comprise (+)-catechin(31.3~39.6%) to total components. on area base), epi-catechin(20.2~36.4%), trans-p-coumaric acid(8.4~15.3%) and trans-p-ferulic acid(7.7~14.1%) as predominant component with some minor coponents, but the fraction supposed to be gallic acid(?) is not present. The antioxidative activities of the phenolic components isolated in this work were in order of epi-catechin>catechin>chlorogenic acid>trans-p-ferluic acid>trans-p-coumaric acid.