악교정 수술 후 하악과두의 위치 및 골변화에 관한 단층방사선학적 연구

송남규,고광준,김민숙 大韓口腔顎顔面 放射線學會 1992 Imaging Science in Dentistry Vol.22 No.2

The purpose of this study was to aid in the evaluation of prognosis of temporomandibular joint following orthognathic surgery. For this study, 20 patients(40 TMJ) who undergone orthognathic surgery were examined. Preoperative and postoperative tomograms of TMJ were taken. And the subjects were divided into 3 groups according to postoperative periods. The obtained results were as follows ; 1. There were no significant differences between preoperative and postoperative changes in joint spaces in each group and between groups(p<0.05). 2. There were no significant differences between preoperative and postoperative ratio of joint space(p<0.05). 3. There were no significant differences between preoperative and postoperative changes in the range of motion of condylar head(p<0.05). 4. The bony changes of condylar head were observed in 14(35%) condyles(6 erosion, 2 flattening, 5 double contour, 1 osteophyte).

악교정 수술 후 하악과두의 위치 및 골변화에 관한 단층방사선학적 연구

송남규,김민숙,고광준 全北大學校 齒醫學硏究所 1992 전북치대논문집 Vol.10 No.1

The purpose of this study was to aid in the evaluation of prognosis of temporomandibular joint following orthognathic surgery. For this study, 20 patients(40 TMJ) who had undergone orthognathic surgery were examined. Preoperative and postoperative tomograms of TMJ were taken. And the subjects were divided into 3 groups according to postoperative periods. The results were as follows ; 1. There were no significant differences between preoperative and postoperative changes in joint spaces in each group and between groups(P<0.05). 2. There were no significant differences between preoperative and postoperative ratio of joint space(P<0.05). 3. There were no significant differences between preoperative and postoperative changes in the range of motion of condylar head(P<0.05). 4. The bony changes of condylar head were observed in 14(35% ) condyles(6 erosion, 2 flattening, 5 double contour, 1 osteophyte).

발기부전 검사에서 천연색 복합초음파촬영술과 야간음경발기검사의 일치도

송윤섭,구자현,김민의,이혜경,김두상,박영호,이남규 순천향의학연구소 1999 Journal of Soonchunhyang Medical Science Vol.5 No.1

We intended to know that the result of color duplex ultrasonography corresponded to that nocturnal penile tumescence rigidity in the diagnosis of erctile dysfunction. We performed both color duplex ultrasonography and nocturnal penile tumescence rigidity in 15 erectile dysfunction men. Colr duplex ultrasonography was done with a 7 MHz. color Doppler unit after intracorporeal pharmacological injection and measured maximal arterail diameter, peak systolic velocity, end-diastolic velocity and the results were compared with rigidity and tumescence in nocturnal penile tumescence rigidity using RigiScan. The positive predictive value, negative predictive value, sensitivity, specificity, overall accuracy of color duplex ultrasonography was reasonable when the result of color duplex ultrasonography was compared with the that of nocturnal penile tumescence rigidity. According to this results, color duplex ultrasonography could not only predict but also correspond to nocturnal penile tumescence. Therefore, we suggest that color duplex ultrasonography can relpace nocturnal penile tumescence rigidity if psychogenic and neurogenic erectile dysfunction are distinguished by history and neurologic examination.

전산화단층상을 이용한 안면골의 3차원재구성상의 비교연구

송남규,고광준 大韓口腔顎顔面 放射線學會 1992 Imaging Science in Dentistry Vol.22 No.2

The purpose of this study was to evaluate the spatial relationship of facial bone more accurately. For this study, the three-dimensional images of dry skull were reconstructed using computer image analysis system and three-dimensional reconstructive program involved CT. The obtained results were as follows ; 1. Three-dimensional reconstructive CT results in images that have better resolution and more contrast. 2. It showed good marginal images of anatomical structure on both three-dimensional CT and computer image analysis system. but the roof of orbit, the lacrimal bone and the squamous portion of temporal bone were hardly detectable. 3. The partial loss of image date were observed during the regeneration of saved image data on three-dimensional CT. 4. It saved the more time for reconstruction of three-dimensional images using computer image analysis system. But, the capacity of hardware was limited for imputting of image data and three-dimensional reconstructive process. 5. We could observe the spatial relationship between the region of interest and the surrounding structures by three-dimensional reconstructive images without invasive method.

브러시리스 직류 전동기의 센서리스 고속 특성 개선

송명현,박규남,우혁재 順天大學校 1998 論文集 Vol.17 No.1

This study applies sensorless strategy that is based on detecting of terminal voltages for sensing the rotor position in real time. And, by providing high PWM frequency, a current ripple and a torque pulsation are removed. Also, and accuracy of position detection at high speed are improved and a high speed operation range is expanded. The sensorless driving system is implemented with an IPM module and 87C196MC one-chip microcontroller. For confirming the validity of the proposed methods. experimental results from a prototype motor of rating 300W have shown. From the results of experiment, the Performance characteristics of high speed operation for permanent magnet brushless DC motor (BLDCM) driving systems are improved.

기름골의 품질관련 특성 평가 : Cyperus esculentus L., var sativus Boeck

송진,방진기,박희운,이승은,박남규 한국국제농업개발학회 2002 韓國國際農業開發學會誌 Vol.14 No.4

기름골의 일반적인 이화학성분과 기름을 추출하여 기름의 특성을 평가한 결과를 요약하면 다음과 같다. 1. 기름골의 일반성분 중 조지방과 조섬유의 함량은 각각 22.4%, 13.3%이고, 총 아미노산 함량은 6,882.4㎎%로 cystein과 isoleucine의 함량이 1,572㎎%, 905㎎%로 가장 높았다. 2. 기름골 전분의 아밀로스 함량은 46.9%였고, RNA 측정결과 최대, 최저 및 최종점도는 각각 451, 280 및 375RNA였다. 3. 기름골 기름의 산가와 과산화물가는 2.1, 6.2meq/㎏이며 지방산 함량은 oleic acid가 70%를 차지하였다. 4. 기름골 기름의 토코페롤 측정결과 α, β, γ, δ가 모두 검출되었고, 그 중 α-tocopherol이 약 15㎎%로 가장 많이 함유되었다. 5. GC/MS를 이용하여 향기성분을 분석한 결과 주된 향기성분은 2.5dimethyl pyrazine으로 약30%를 차지하였다. The objective of this study were to evaluate quality characteristics of the chufa tuber and its oil. The results are summarized as follows : Crude fat, crude fiber and total amino acid were 22.4%, 13.3% and 6.882㎎% of the chufa tuber, respectively. Amylose content of chufa starch was 46.9% and maxium. Minimum and final viscosity of amylogram characteristics in chufa starch were 451, 280 and 375 RVA, respectively. The acid value of oil was 2.1 and peroxide value was 6.2meq/㎏. The content of oleic acid, a major fatty acid in chufa oil, was 70%. Four type of tocopherol were detected and α-tocopheral was shown to be the major tocopherol. The volatile component was measured by GC/MS. 2.5-Dimethyl pyrazine was the dominant volatile component in the whole chufa oil.

전산화단층상을 이용한 안면골의 3차원재구성상의 비교 연구

송남규,김민숙,고광준 全北大學校 齒醫學硏究所 1992 전북치대논문집 Vol.10 No.1

The purpose of this study was to evaluate the spatial relationship of facial bone more accurately. For this study, the three-dimensional images of dry skull were reconstructed using computer image analysis system and three-dimensional reconstructive program involved CT. The obtained results were as follows : 1. Three-dimensional reconstructive CT results in images that have better resolution and more contrast. 2. It showed good marginal images of anatomical structure on both three-dimensional CT and computer image analysis system, but the roof of orbit, the lacrimal bone and the squamous portion of temporal bone were hardly detectable. 3. The partial loss of image data were observed during the regeneration of saved image data on three-dimensional CT. 4. It saved the more time for reconstruction of three-dimensional images using computer image analysis system. But, the capacity of hardware was limited for inputting of image data and three-dimensional reconstructive process. 5. We could observe the spatial relationship between the region of interest and the surrounding structures by three-dimensional reconstructive images without invasive method.

경계강조 보간법을 이용한 디지탈방사선사진상의 개선에 관한 연구

송남규,고광준 大韓口腔顎顔面 放射線學會 1998 Imaging Science in Dentistry Vol.28 No.1

The purpose of this study was to aid in the use of the digital images by edge-detect interpolation for direct digital periapical images using edge-detect interpolation . This study was performed by image processing of 20 digital periapical images; pixel replication, linear non-interpolation, linear interpolation, and edge-sensitive interpolation. The obtained results were as follows: 1. Pixel replication showed blocking artifact and serious image distortion. 2. Linear interpolation showed smoothing effect on the edge. 3. Edge-sensitive interpolation overcame the smoothing effect on the edge and showed better image.

매복된 상악 중절치의 교정적 처치를 통한 치험례

김남혁,김성오,송제선,손흥규,최병재,이제호,최형준 大韓小兒齒科學會 2010 大韓小兒齒科學會誌 Vol.37 No.1

매복은 임상 검사나 방사선 사진 검사 상에서 인식 가능한 맹출 경로 상에 장애물이나 이소 위치에 의한 치아 맹출의 정지를 의미한다. 상악 중절치의 치아 매복의 원인으로는 과잉치, 치아종, 치배의 이소위치, 외상 후 연조직 치유에 의한 폐쇄, 만곡치, 정지된 치근 발육 등이 있다. 매복된 치아는 인접치의 근심이동으로 인한 공간 상실, 부정교합, 인접치의 치근 흡수, 낭종의 형성 등을 유발할 수 있으므로 맹출장애에 대한 주의 깊은 관찰과 조기 진단이 중요하며 적절한 치료가 시행되어야 한다. 매복된 치아의 치료방법으로는 유치의 발거나 외과적 노출을 통한 맹출 유도, 경과관찰, 외과적 방법이나 교정력을 이용한 매복치의 재위치, 매복치의 외과적 발거 등이 있다. 이 중 교정적 견인은 매복된 치아가 원인을 제거한 후 또는 외과적으로 치관을 노출시킨 후에 일정기간의 관찰에도 맹출하지 않거나, 맹출경로가 정상에서 많이 벗어나 맹출이 기대되지 않을 경우 적용될 수 있다. 본 증례는 매복된 상악중절치를 교정적 견인을 통해 정상적인 맹출 방향으로 유도한 치험례들로 양호한 치료 결과를 보였기에 이를 보고하고자 하는 바이다. Impaction is defined as a cessation of the eruption of a tooth caused by a clinically or radiographically detectable physical barrier in the eruption path or by an ectopic position of the tooth. The reasons for impaction of the maxillary central incisor are supernumerary tooth, odontoma, ectopic position of tooth germ, dilacerated tooth and so force. Impacted tooth cause space loss due to proximal movement of adjacent tooth, malocclusion, root resorption of adjacent tooth, cyst formation, so careful observation and early detection is important and exact treatment should be applied to prevent these results. The treatment options of impacted tooth include induction an eruption through extraction of deciduous tooth or surgical exposure, reposition of impacted tooth by surgical method or orthodontic treatment. Orthodontic traction is recommended when an eruption does not happen after removal of barrier or surgical exposure, when eruption path is too transpositioned to be corrected spontaneously so eruption does not expected. In these cases, traction of impacted maxillary central incisor was carried out using orthodontic method with closed eruption technique and it showed good clinical results so we report these cases.

새로운 스위칭함수를 이용한 가변구조 위치제어기

박규남,송명현 순천대학교 공업기술연구소 1990 工業技術硏究所論文集 Vol.4 No.-

A control system of brushless dc machine position control based on Variable Structure System approach is presented. In order to simplify the overall control system and to improve the robustness of position controller, a new switching function which composed of linear combination of only measurable state variables Sr(x) and Sr(x) is defined. With this proposed method, good dynamic and steady state behaviors of the overall system are obtained without any external load torque observer. A general PWM amplifier is replaced by an ON―OFF pattern generator for digitalization and a digital signal processor(DSP) is used for high speed switching. Experimental results are given to demonstrate the validity of the proposed control method.