하악전돌증 환자의 악교정 수술 후 두부 경골조직의 계측학적 변화

정승문,장석주 고신대학교(의대) 고신대학교 의과대학 학술지 2001 고신대학교 의과대학 학술지 Vol.16 No.1

Background : Prognathism is anterior protrusion of mandible, which causes malocclusion or aesthetic problem. Among corrective procedures, BSSO is one of the most commonly used operative procedure. The advantage of BSSO is wide bony contact surface. Before performing this procedure, several measurement and calculation are needed for good occlusional and cosmetic results. There are vertical facial measurement, dental measurement in cephalometric analysis. Methods : In this study, we intend to compare the preoperative with the postoperative measurements and to analyze the effects of BSSO on occlusion and aesthetics. Results & Conclusion : Vertical facial measurement (anterior face height, posterior face height) decreased postoperatively to normal value in most successful cases. Horizontal lower facial measurement (gonial angle and mandibular body length etc.) show the same results.

탈지구자기장이 초파리 집단의 선택불리에 미치는 영향

정승문,박은규 圓光大學校 基礎自然科學硏究所 2001 基礎科學硏究誌 Vol.19 No.1

본 연구에서는 전북 김제시 청하의 자연집단 야생형 초파리와 성연관 골연변이형 호아색체-백색안 초파리를 Helmholtz coils 장치를 사용해서 유도한 탈지구자기장내 초파리 집단과 비교집단인 지구자기장내 초파리 집단으로 사육해서 발생된 성적 선택빈도를 조사하여, 선택불리에 관한 다음과 같은 결과를 얻었다. 야생형 유전자를 운반한 염색체의 선태빈도는 25세대까지 전체 평균빈도가 위의 두 집단에서 각각 0.7284,0.7360으로 관찰되었다. 이 결과는 탈지구자기장내 초파리 집단에서 더 강한 선택불리를 보여 주었다. 성연과 돌연변이형 yω 유전자를 운반한 염색체의 선택빈도는 위의 각각의 조절된 자기장내의 초파리 집단에서 각각0.0256, 0.0191로 관찰되었다. 이 결과는 탈지구자기장내 초파리 집단보다 지구자기장내 초파리 집단에서 더 강한 선택불리 행동을 보여 주었다. 초파리 집단의 전체 평균 발생율은 위의 초파리 집단에서 각각 32.10%, 67.90%로 관찰 되었다. 이 결과는 지구자기장내 초파리 집단의 발생율이 상대적으로 높은 수치로 조사되었다. Duncan's multiple range test와 LSD 값으로 유의 차이를 검정하였던 바 야생형 그룹과 다른 3개의 돌연변이형 그룹 사이에서 고도의 유의 차이가 있음이 밝혀졌다. To elucidate the genetic behavior of selective disadvantage among sex-linked mutants of Drosophila melanogaster vred and kept by the genetic study laboratory room, Wonkwang University and wild type collected at Chongha, Kimje city, Chollabuk-do, and reared under the in fluence of two different strength of magnetic field, this study i.e., the without magnetic field generated by Helmholtz coils and the ambient magnetic field, this study was carried out at the above indicated laboratory room. The mean selective frequencies of wild type gene-carrying chromosomes up to twenty-fifth generation, affected by two different magnetic fields, showed 0.7284 and 0.7360 with the magnetic field strength as mentioned other before. The data explains that Drosophila melanogaster population reared in the without magnetic field showed stronger selective disadvantage. The selective frequencies of the individual of yω gene-bearing chromosomes showed 0.0256 and 0.0191 by the same order of magnetic field strength indicate above. It was shown that the fly population reared at the ambient magnetic field cleared the relatively stronger selective disadvantage. The over-all mean emergence rates of Drosophila melanogaster populations reared in controlled magnetic fields indicated above showed 32.10% and 67.90% respectively higher emergence rate than the without magnetic field population. Through Duncan's multiple range test and LSD value, the highly significant differences between the wild type and anyone of the other mutants were calculated.

당뇨병 환자에서의 하지재건

정승문 釜山醫師會 1995 釜山醫師會誌 Vol.31 No.8

전자후방산란회절(EBSD)을 강재의 미세조직 정량 분석 신뢰도 평가

정승문,김태훈,조규진,오진수,양철웅 한국진공학회 2015 한국진공학회 학술발표회초록집 Vol.2015 No.2

급성부고환염 진단에서의 도플러초음파 저항지수의 유용성

정승문 대한영상의학회 1995 대한영상의학회지 Vol.32 No.6

만성 호산구성 백혈병 1례

정승문,김창욱,허경무,김미자,전용준,이호준,이호영,정회상,박유환,정춘해 朝鮮大學校 附設 醫學硏究所 1996 The Medical Journal of Chosun University Vol.21 No.2

Chronic eosinophilic leukemia is a rare myeloproliferative disorder, It is considered by some to be a variant of chronic myelogenous leukemia. Still, others classify persistent eosinophilia accompanied by an unexplained organ system dysfunction with no underlying cause, under the broad classification of hypereosinophilic syndrome. It is characterized by a persistent eosinophilia of an immature form due to the infiltration of tissue by eosinophil and hepatosplenomegaly, anemia, thrombocytopenia and a brief clinical course. We report a case of eosinophilic leukemia. A 72-year-old man presented anorexia, dizziness and generalized weakness. The peripheral blood showed persistent eosinophilia of an immature form, anemia and thrombocytopenia. The bone marrow study showed a shift to the left, with many eosinophilic myelocyte and marrow fibrosis. The LAP score and chromosome analysis showed normal findings.

Interpretation of High-Temperature Tensile Properties by Thermodynamically Calculated Equilibrium Phase Diagrams of Heat-Resistant Austenitic Cast Steels

정승문,손석수,최원미,이병주,오용준,장성식,이성학 대한금속·재료학회 2017 METALS AND MATERIALS International Vol.23 No.1

High-temperature tensile properties of three heat-resistant austenitic cast steels fabricated by varying W, Mo, and Al contents were interpreted by thermodynamically calculated equilibrium phase diagrams of austenite, ferrite, and carbides as well as microstructural analyses. A two-step calculation method was adopted to cast steel microstructures below the liquid dissolution temperature because the casting route was not an equilibrium state. Thermodynamically calculated fractions of equilibrium phases were well matched with experimentally measured fractions. Ferrites existed at room and high temperatures in both equilibrium phase diagrams and actual microstructures, which has not been reported in previous researches on austenitic cast steels. In the W2Mo1Al1 steel, 38% and 12% of ferrite existed in the equilibrium phase diagram and actual microstructure, respectively, and led to the void initiation and coalescence at ferrites and consequently to the serious deterioration of high-temperature strengths. The present equilibrium phase diagrams, besides detailed microstructural analyses, effectively evaluated the high-temperature performance by estimating high-temperature equilibrium phases, and provided an important idea on whether ferrite were formed or not in the heat-resistant austenitic cast steels.

한국산 초파리집단의 발생율에 대한 자기장의 영향

정승문,박은규 圓光大學校 基礎自然科學硏究所 2000 基礎科學硏究誌 Vol.18 No.1

거제도에서 채집한 야생형 초파리와 성연관 돌연변이체 사이에서의 성적선택에 따른 자기장의 영향을 조사하기 위하여 본 연구를 수행했다. 본 실험에서의 초파리는 4개의 다른 자기장의 힘의 영향하에서 사육되었다. 즉 지구자기장, 탈지구자기장, 지구자기장 2배의 자기장과 지구장기장 8배의 자기장을 설정하고 이들 제어환경하에서 상기 재료 초파리들의 수정란에서 우화하기까지의 발생율을 조사하여 그 결과를 분석하였다. 전체평균 발생율은 지구자기장내의 초파리 집단, 탈지구자기장내의 초파리 집단, 지구자기장 2배의 초파리 집단, 지구자기장내 8배의 초파리 집단에서 각각 20.35%, 24.55%, 25.27%, 29.83%로 지구자기장내의 초파리 집단 전체평균이 Helmholtzcoils 장치를 이용해 조절된 다른 3개의 초파리 집단에서 보다 상대적으로 낮은 발생율을 보여 주었다. 상이한 자기장내에서의 계수일자에 관한 발생빈도를 보면, 계수 첫째날부터 셋째날까지의 빈도가 지구자기장내 초파리집단에서 약 63%가, 탈지구자기장 집단에서는 약70%, 지구자기장 2배의 집단에서는 65%를, 그리고 지구자기장 8배의 초파리 집단에서는 전체 평균 발생빈도의 74%를 넘는 것으로 관찰되었다. This study was carried out to elucidate influence of magnetic field on sexual selection between sex-linked mutant and the wild type of Drosophila melanogaster collected at keojedo. For the present experiment using population cages, each fly of four cages reared under the influence of four different strengths of magnetic field, that is, the ambient, the without, the double and the eight-fold magnetic field artificially generated by Helmholtz coils. Also the study was analysed emergence frequencies of progeny on counting days due to eggs laying by mated females on a complete food. The over-all mean emergence rates of population of 25 generations reared under the four different magnetic fields, the ambient, the without, the double and the eight-fold, were 20.35%, 24.55%, 25.27% and 29.83%, respectively. The fly population raised under the ambient magnetic field showed a relatively lower emergence rate than any of those raised under the other three magnetic fields. Emergence frequencies of progeny on counting days from 1st to 3rd day under different magnetic fields were above 63%, 70%, 65% and 74%,respectively.

부모와 자녀 및 남매간에 발생한 가족성 크론병 2예

정승문,최창환,설혜령,정선주,황승재,이현웅,김형준,도재혁,장세경 대한내과학회 2008 대한내과학회 추계학술대회 Vol.2008 No.-

하악전돌증 환자의 악교정 수술후 두부 경골조직의 계측학적변화

정승문,장석주 고신대학교 의학부 2001 高神大學校 醫學部 論文集 Vol.16 No.1

Background Prognathism is anterior protrusion of mandible, which causes malocclusion or aesthetic problem. Among corrective procedures. BSSO in one of the most commonly used operative procedure. The advantage of BSSO is wide bony contact surface. Before performing this procedure, several measurement and calculation are needed for good occlusional and cosmetic results. There are vertical facial measurement, dental measurement in cephalometric analysis. Methods In this study, we intend to compare the preoperative with the postoperative measurements and to analyze the effects of BSSO on occlusion and aesthetics. Results & Conclusion Vertical facial measurement(anterior face height, posterior face height) decreased postoperatively to normal value in most successful cases. Horizontal lower facial measurement(gonial angle and mandibular body length etc) show the same results.