난발치 및 안면골 골절 정복술후 동통에 대한 Pranoprofen의 치료 효과

정필훈,채윤필 충남대학교 의과대학 지역사회의학연구소 1987 충남의대잡지 Vol.14 No.2

The authors investigated and evaluated the effects and untoward effect of recently developed non-steroidal anti-inflammatory analgesics "Pranoprofen" in field of oral and maxillofacial surgery. The 19 Cases of examined 30 patients were surgical extractions and the rests of examined 30 patients were facial bone fractures. The results were as follows. 1. Effective analgesic action was obtained in 28 patients (93.3%). 2 The gastrointestinal trouble was occurred in 4 patients (13.3%) but the symptome was not severe and disappeared soon after discontinuation of the drug. 3. So, this drug can be used effectively and safely in minor surgery of oral and maxillofacial area.

반도체 레이저의 온도 및 주입전류 의존성에 관한 연구

김의훈,김필수,이제형 漢陽大學校 基礎科學硏究所 1992 基礎科學論文集 Vol.11 No.-

반도체 레이저의 온도와 주입전류 변화에 따른 방출스펙트럼의 특성을 조사하고 파장조정 가능성을 연구하였다. 실온에서 피크파장 780nm를 가지는 Mitsubishi사의 GaAlAs계의 레이저 다이오우드에 대해 주입전류를 일정하게 유지하고 온도를 변화시켰을 때의 방출피크파장은 계단적으로 증가하였으며 파장의 의존도는 0.20nm/℃였다. 온도를 일정하게 유지하고 주입전류를 변화시켰을 때의 방출피크파장 역시 계단적인 변화양상을 보였으며 파장의 전류 의존도는 0.11nm/mA였다. 한편 레이저 다이오우드의 문턱전류는 다이오우드의 온도 증가에 따라 거의 지수함수적으로 증가하였다. 온도와 주입전류 변화로 얻은 최소 방출파장은 770nm이었다. Spectral characteristics and wavelength tunability of a semiconductor diode laser have been studied by examining the wavelength dependence on temperature and injection current. The results show that the output peak wavelength from a Mitsubishi GaAlAs laser diode increases stepwise with increasing temperature at constant injection current, showing the wavelength dependence on temperaure of 0.20nm/℃. On the other hand, the output peak wavelength also varies stepwise with increasing injection current at constant temperature, representing the wevelength dependence on injection current of 0.11nm/mA. The measured threshold currents of the diode laser increase exponentially as a function of temperature. By control of temperature and injection current of laser diode, the output peak wavelength can be attained down to 770nm.

트란스-1-(피라진일)-2-(4′-퀴놀린일)에틸렌의 형광 연구 : 온도, pH, 염 및 Heavy Atom 효과 Temperature, pH, Salt, and Heavy Atom Effect

봉필훈 Natural Science Research Institute JEONJU UNIVERSI 1987 전주대학교 자연과학연구소 학술논문집 Vol.2 No.2

Fluorescence of trans-1-(pyrazinyl)-2-(4'-quinolinyl) ethylene was investigated in various conditions. The fluorescence intensity increases as temperature decreases because of the restriction of changes in solute geometry by the slower rate at which the solvent cage is capable of rearranging, and because of the presence of the activated process, twisting in the first excited singlet state. Competing with fluorescence and temperature, the rotational barrier is estmated to be 0.97 Kcal/mal. The fluorescence intensity also increases as the polarity of solvents increases because of the changing of the energy levels of ^1(n.π^*) and ^1(π, π^*) states. The fluorescence intensity, however, decreases as going from neutral to acidic or basic solutions and are not affects by changing the concentration of salt. The heavy stom effect on. the fluorescence was also investigated.

공기중의 Radon 방사능 측정에 의한 서울 대기의 혼합높이 결정

김의훈,김필수,김채옥,이건상,권기덕 漢陽大學校 環境科學硏究所 1985 環境科學論文集 Vol.6 No.-

서울 대기의 혼합높이를 1984년1월부터 4월 사이에 지표고도에서 측정한 ??으로부터 결정하였다. ?? 농도로부터 상당혼합높이를 계산하기 위하여 한 수식 모델을 개발하였다. 이로부터 계산한 상당혼합높이는 늦은 오후에 최고 및 밤 또는 이른 아침에 최저값을 가지며 수 십 미터에서 1킬로미터 또는 그 이상의 높이를 보이는 일변화를 나타냈다. 평균혼합높이는 겨울이 낮았다. 이와 같은 변화는 대기의 안정도, 일조시간, 기온 등 대기의 인자와 밀접한 관계가 있었다. The mixing heigt of the atmosphere in Seoul was determined from the measurement of ?? concentration in air at ground level for January 1984 to April 1984. In order to calculate the equivalent mixing height from ?? concentration, a mathematical model was developed. The equivalent mixing heights calculated from this model showed diurnal variation with the highest values in the late afternoon and the lowest during night hours or early morning ranging from several tens to one thousand meters or more. The average heights represented lower values in the winter. These variations were closely related to the atmospheric factors, such as atmospheric stability, daytime hour, and temperature, etc.

냉동건조 은행골의 개발 및 이의 실험적 연구

정필훈 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.1

In order to develop the allogeneic bone implants instead of autogenous bone grafts for maxillofacial reconstruction, undemineralized freeze-dried human bone was processed. The freeze-dried human bone was implanted into the cranial and mandibular defects of the rabbits. The implants were evaluated clinically, roentgenographically and histomophmetrically. And immunohistochemical evaluation of the implants was performed on the rat. The results were as follows : 1. When compared with control defects of 0.8×0.8cm, the implants on the rabbit defects displayed complete osseous bridging clinically and roentgenographically. Histomophometrically a minimal inflammatory cell infiltrate was present but the defects healed well clinically. 2. When compared with control grafts, the freeze-dried implants on the rat muscle displayed decreased antigenicity by immunohistochemical evaluation, due to freeze-drying process. 3. Undemineralized freeze-dried human bone in this study can be preserved as a bank bone in this study and seems to be applicable for clinical allogeneic bone grafts.

후천성 면역 결핍증 환자의 혀에 발생한 거대세포바이러스(CMV : cytomegalovirus) 감염

송노헌,이종호,정필훈,김명진,김수경,남일우,김종원,백세미,홍삼표 大韓顎顔面成形再建外科學會 1998 Maxillofacial Plastic Reconstructive Surgery Vol.20 No.1

호산구증가증을 동반한 혈관임파양 증식증

변영남,정필훈,윤영호,김종철 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.4

Angiolymphoid hyperplasia with eosinophilia(ALHE) is benign subcutaneous lesion that primarily affects head and neck region. It is characterized by single or multiple nodules in the subcutaneous tissue associated with eosinophilia in the peripheral blood. Kimura's disease, originally reported by Kimura et al., is similar lesion with ALHE in the clinical and histopathological aspects. There has been considerable controversy about the relation between Kimura's disease and ALHE. IN Korea, 26 cases of Kimura's disease and ALHE have been reported since 1975. We present a case of recurred ALHE occurring on the left cheek in a 58-year-old woman. Including this case, we summarized all cases that were reported as Kimura's disease or ALHE in Korea through literature review. We also give an outline of clinical and histopathological characteristics of cases reported in Korea.

고온 초전도체 Y₁Ba₂Cu₃O에서 Y의 Sm 치환 효과

김채옥,김필수,김의훈,김재욱 漢陽大學校 基礎科學硏究所 1992 基礎科學論文集 Vol.11 No.-

고온 초전도체 Y₁Ba₂Cu₃O??에서 Y를 Sm으로 치환시켰을 때의 수송 임계 전류밀도와 저항의 측정은 각각 77K와 80-160K범위의 온도에서 조사되었다. 그리고 X-선 회절 분석 및 적외선 투과율 측정은 실온에서 수행되었으며, 시료들은 고상 반응법에 의해서 제조되었다. 한편 치환양이 증가함에 따라서 정상상태에서의 저항값은 증가하는 경향을 보였고, 93K 근처에서 초전도 전이온도 Tc를 갖고 있으며, 치환양에 따라 거의 변화지 않았다. 적외선 투과율 측정결과 날카로운 peak들은 472.78~618.53㎝-1범위에 있었다. 이것은 특이할 정도로의 low-lying plasmalike edge와 낮은 에너지의 전자적인 여기가 존재함을 나타내는 것이다. 수송임계 전류밀도는 43.3~123.9A/㎠ 범위에 있었다. 전이온도 Tc에 상자성 불순물의 영향이 거의 없는 것으로 보아 123phase에서 Y가 고온 초전도성에 주된 역할을 하지 않음을 알 수 있었다. The measurements of the transport critical current density and resistivity of high Tc superconductor Y₁Ba₂Cu₃O?? were made at 77K and in the range of 80~160K. X-ray pellet diffraction and IR transmittance measurements were carried out at room tempemature. The samples in which Y is replaced by Sm were prepared by solid state reaction. As substitution content increased, the normal state resistivity was increased and the superconducting transition temperature Tc near 93K did not change significantly with the substitution content. From the infrared transmittance measurements many sharp peaks were observed in the range of 472.78~618.53㎝?. It indicates that unusual low-lying plasmalike edge and low energy electronic excitation exist. The values of transport critical current densities were in the range of 43.3~123.9A/㎠. From the observation of no significant change in Tc with mangetic rare earth impurities, it could be concluded that Y plays no crucial role in the high Tc superconduction mechanisms at the 123 phase.

Goretex를 이용한 융비술

최진영,민철기,명훈,황순정,서병무,이종호,정필순,김명진 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.4

융비술시 실리콘 고무는 다루기 쉽고 조직 반응이 적어 현대 많이 돌출의 합병증이 생길 수 있다. 저자등은 이러한 실리콘의 단점을 보완할 수 있는 goretex를 사용하여 융비술을 시행하고 비첨에 대해서 자가연골을 이식하여 만족할 만한 결과를 얻었기에 goretex가 안면부 연조직의 증강을 위한 이식재료로 적합하다고 생각되어 문헌고찰과 함께 보고하는 바이다. Many different materials have been used to provide augmentation of the nasal dorsum. this include both autogenous and homogenous materials,as well as allografts. Silicone among the artificial materials has been most widely used. The silicone has some advantages and disadvantages. Goretex(expanded polytetra-fluoroethylene) which has widely used in vascular surgery and abdominal surgery can be used for facial soft tissue augmentation. The author presemts 2 cases of nasal augmentaion using goretex with literature review.

치조열 환자에서의 치아형태이상, 결혼치 및 위치이상에 대한 임상적 연구

강진한,최진영,이종호,정필훈,김명진 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.5

Until recent time many studies for relationship of dental abnormalities and cleft lip and palate were reported, higher prevalence of abnormality was revealed. The patients with large cleft size had significantly more missing teeth than patients with small cleft size. The tooth that is most usually missed in normal population is the mandibular second premolar, followed by the maxillary lateral incisor and the upper second premolar. The aim of this study was to analyse the prevalence of dental abnormalities and ectopic eruption in patients with cleft alveolus visiting our hospital. Radiographs, dental cast and records from about 60 patients were analysed to find the relation of missing, malformed, malpositioned tooth and delayed eruption and cleft site.