쿠퍼씨 방법을 이용한 상악 전방부 골절단술

김소영,김수관,이상호,김수응,정태영,안태훈 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.5

Anterior segmental osteotomy were performed in 8 patients with Angle's II malocclusion or anterior maxillary protrusion. Cupar's method was used for operation. The period of follow up for patients were 15months by average. This study discussed the postoperative complications and soft tissue change after anterior segmental maxillary osteotomy. There are not specific major complications.

Misorientation Characteristics at the Growth Front of Abnormally-Growing Goss Grains in Fe–3%Si Steel

Tae‑Young Kim,Tae‑Wook Na,Hyung‑Seok Shim,Yong‑Keun Ahn,Yong‑Kwon Jeong,Heung Nam Han,Nong‑Moon Hwang 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.12

Penetrating morphologies at the growth front of abnormally-growing Goss grains in Fe–3%Si steel was examined in view ofthe possibility that they are the two-dimensional section of the solid-state wetting (SSW) along the triple junction line. Toobtain the statistically meaningful data, 102 penetrated grain and 204 penetrating abnormally-growing Goss grain morphologieswere examined. The misorientation angles of penetrating and penetrated grains were measured by electron backscattereddiffraction. Among the 102 examined penetrated grain boundaries, none has low misorientation angles less than 15°,whereas 17.2% of the 204 penetrating grain boundaries have low misorientation angles, and 23.5% of them have coincidencesite lattice boundaries. Besides, boundary energies of penetrating Goss grains, which were estimated from misorientationangles of the three grains in the penetrating morphology, satisfied the energetic condition for SSW along the triple junctionline. These results imply that the abnormal grain growth of Goss grains in Fe–3%Si steel occurs by the mechanism of subboundaryenhanced SSW.

서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1994)

김재홍,안진균,정성재,김영태,김중환,김시영,이석종,이홍렬,서호석,김경훈,권혁진,정우권,고우석,이용석,안필수,오준규,오용섭 대한화학요법학회 1996 대한화학요법학회지 Vol.14 No.1

Background : In recent years gonorrhoea has been panendemic and remains one of the most common Sexually Transmitted Diseases in the world, especially in developing countries. Objective & Method : For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria Gonorrhoeae(PPNG), Ive have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results : In 1994, 168 strains of N. gonorrhoeae were isolated, among which 109 (64,9% ) were PPNG. Conclustion : Our results suggests that the prevalence of PPNG in Seoul is still increasing.

하악골 절제술후 재이식된 돌결자가골 재이식 : 치험 3례

김 식,김수관,김운규,김수민,류종희,이준길,조경안,김수흥,정태영,여환호 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.2

We described three cases of immediate reimplantation of a frozen-thawed autogenous mandible composed of a mixture of iliac bone, marrow, and particulate hydroxyapatite in tumors of the mandible. Acceptable outcomes were obtained in three patients who underwent immediate autogenous mandibular graft reconstruction. The conditions leading to successful outcome of the procedure are also discussed. Reimplantation of frozen autogenous lesioned mandible was performed in three patients with mandibular tumors. Two reimplanted grafts survived without complications following surgery. One case had postoperative infection that resolved with appropriate antibiotic treatment. There were no recurrences of the primary lesions. Satisfactory facial contour after surgery was achieved. These results are most promising, and we believe that, with further refinement, this technique will offer a new and acceptable modality for facial reconstruction in patients with cancer.

Pollen Viability of Common Buckwheat (Fagopyrum esculentum Moench.) in in vitro Germination and its Application to Male Gametophyte Isolation

Woo, Sun-HeeㆍKeun-Yook ChungㆍHeung-Tae, KimㆍYong-Gu, ChoㆍHong-Sig, KimㆍBeom-Heon, Songㆍ Chul-Won, Lee and Seung-Keun Jong 忠北大學校 農業科學硏究所 2004 農業科學硏究 Vol.21 No.-

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자궁내막암의 방사선치료 성적

김재성,김준상,조문준,박승호,노흥태,남상륜 충남대학교 의과대학 지역사회의학연구소 1996 충남의대잡지 Vol.23 No.1

Purpose : To evaluate survival rate, treatment failure pattern and complication of endometrial carcinoma patients treated with radiation therapy Materials and Methods : From November 1989 through March 1995, twenty two patients with endometrial carcinoma were treated with radiation therapy at Chungnam National University Hospital. According to the 1988 FIGO staging system, four patients had stage I A disease, 6 stage I B, 4 stage I C, 1 stage Ⅱ A, 6 stage Ⅲ A, and 1 stage Ⅲ B. Radiation therapy was given preoperatively to 2 patients, postoperatively to 19 patients, and curatively to one patient considered to be inoperable due to valvular heart disease. Twelve patients were treated with external radiation therapy alone by conventional technique (180-200 cGy/fraction), and 6 patients with external radiotherapy plus high dose rate intracavitary radiotherapy (HDR ICR), and 4 patients with HDR ICR alone. Results : All patients were followed up for 9 to 71 months (median 21 months). The overall 5 year survival rate of all patients was 68.9%. The 5 year survival rates of stage I , Ⅱ , and Ⅲ were 87.5%, 100%, and 41.6%, respectively. Relapse rate was 9.1% (2/22), and treatment failure occurred as a distant metastasis only without local failure. Early mild complication rate was 31.8% (7/22), and late complication rate 9.1% (2/22), including one radiation colitis and one vulvar ulcer. Conclusion : Adjuvant pelvic radiation thereapy is an effective local treatment modality to prevent local relapse in patients with endometrial carcinoma not accompanying severe late complications.

작업환경 개선을 위한 산업환기 시스템 설계 소프트웨어 개발

김태형,배병훈 한국환경과학회 1996 한국환경과학회지 Vol.5 No.6

Industrial ventilation is a crucial engineering measure to protect workers from hazardous airborne contaminants. Designing a ventilation system is not an easy task. To solve this problem, many U. S. computer programs and softwares have been developed. In Korea, asoftware, called as VPMC, was developed by Korea Industrial Safety Corporation. But VPMC could not stand alone since it can be used to design not a hood, but a ventilation system. In this research, therefore, a preprocessing software was developed. It can be used to design general ventilation system, canopy hood, open surface tank hood. The program was written in Microsoft Visual Basic. In near future, this software will be incorporated into a total package software which can be used to design a whole ventilation system.

그리드 포털의 기능 분류에 따른 조사 연구

김태식,구흥서 청주대학교 산업과학연구소 2005 産業科學硏究 Vol.22 No.3

Grid computing enables the virtualization of distributed computing and data resources such as processing, network bandwidth and storage capacity to create a single system image, granting users and applications seamless access to vast IT capabilities. As many researchers have been interested in Grid Technology, they have also focused their attention on PSE where users use Grid easily. Grid Portal, one of PSEs, provides users with web interface so that they will easily run their jobs using Grid. Many grid portals are currently being serviced. We classified the existing grid portals into Grid Information Portals and Grid Application Portals according to functional distinctions. We then studied and surveyed representative grid portals that belong to GIP and GAP

기계적 삭제방법을 이용한 치면열구전색제의 열구 침투도 및 미세누출

김지연,이제호,박기태,김성오,최병재,손흥규 大韓小兒齒科學會 2005 大韓小兒齒科學會誌 Vol.32 No.1

교합면 치아우식 예방을 위한 치면열구전색제 도포시 열구내 유기물, 치태, 법랑질 잔사 등을 제거하여 전색제의 유지율을 증가시키고자 기계적 삭제 방법이 소개되었다. 기계적 삭제방법을 사용할 경우 산부식 방법만을 사용하였을 때와 비교하여 치면열구전색제의 열구 침투도 및 미세누출정도의 차이는 임상적인 측면에서 중요하다. 따라서 이 연구에서는 기계적 삭제방법(소와열구 삭제 후 산부식)과 산부식 방법을 시행한 후, 각각 unfilled sealant와 filled sealant를 처치하고 이들 치면열구전색제의 열구 침투도와 미세누출 정도를 측정하였다. 교정치료를 목적으로 발거된 사람의 소구치 60개를 실험재료로 사용하였으며 그중 30개는 산부식 처리하고 나머지 30개는 소와열구의 기계적 삭제와 산부식 처리를 시행한 후 각각의 방법에서 15개는 unfilled sealant로 나머지 15개는 filled sealant로 수복하였다. Thermocycling(5℃와 55℃ 1200회)을 시행하고 5% methylene blue 용액에 24시간 보관하였다가 각각의 치아를 근심소와와 원심소와에서 협설 방향으로 절단하여 120개의 절단면을 얻었다. 각 절단면을 Measurescope으로 관찰한 결과, 기계적 삭제 방법은 산부식만을 시행한 경우에 비하여 unfilled sealant와 filled sealant 모두 열구 침투도를 증가시켰다(P<0.05). 기계적 삭제 방법을 사용한 경우 산부식 방법만을 사용하고 unfilled sealant로 수복한 경우에 비하여 미세누출이 적었고(P<0.05), 산부식 방법만을 사용하고 filled sealant로 수복한 경우와는 미세누출에 차이가 없었다. Unfilled sealant와 filled sealant는 기계적 삭제 방법을 사용한 경우와 산부식 방법만을 사용한 경우 모두 열구 침투도나 미세누출에 있어서 유의한 차이가 없었다. 이상의 결과로 보아 치면열구전색제 도포 시 열구 침투도가 우수하고 미세누출이 적은 기계적 삭제 방법과 물리적 성질이 우수한 filled sealant의 사용이 바람직하다고 생각된다. 그러나 미세누출에 있어 교합력을 고려한 실험이나 장기간의 임상실험이 필요할 것이다. Mechanical preparation has been introduced to provide the sealant retention. The objective of this study was to compare the fissure penetration and the microleakage of pit and fissure sealant using mechanical preparation(mechanical preparation + acid etching) and acid etching only. An additional objective of this study was to compare the fissure penetration and the microleakage of unfilled and filled sealant in both methods. Sixty human premolars extracted for orthodontic purpose were selected. Thirty teeth were acid etched alone and remaining thirty teeth were prepared with a ¼ round bur and then acid etched. One-half of teeth in each surface treatment method were sealed with unfilled sealant and the other half were sealed with filled sealant. All of the teeth were thermocycled for 1200 cycles at 5℃ and 55℃ and immersed in 5% methylene blue for 24 hours. Each tooth was sectioned bucco-lingually at mesial pit and distal pit and examined under a Measurescope. In the case of mechanical preparation, fissure penetration of sealant was significantly increased compared with the case of acid etching only(P<0.05). The filled and unfilled sealant using mechanical preparation showed significantly decreased microleakage when compared with the unfilled sealant using acid etching only(P<0.05). No differences were found in fissure penetration and microleakage between unfilled and filled sealant in both methods. Taken together, the results of this study suggest that mechanical preparation and filled sealant are recommended when placing pit and fissure sealant. However, further clinical studies should be performed in regard to microleakage.

나노급 극세 금속선 다발의 압출 해석에 관한 연구

김태홍,이용신 국민대학교 생산기술연구소 2002 공학기술논문집 Vol.25 No.-

A combined process, extrusion of bimetal wire and then drawing of the bundle of those wires, is introduced to manufacture the nano-class filament wires. This new process is devised to significantly reduce the amount of work compared to the current way of manufacturing the nano-class filament wires, which uses drawing processes as many as approximately one hundred twenty times. Each filament wire is composed of two metals, outer copper ring and inner aluminum wire. As a beginning to examine the possibility of the proposed process with a bimetal wire, the first extrusion of copper-clad aluminum wire is carefully simulated. Several process parameters such as die angle, extrusion ratio and thickness ratio of clad materials are chosen to examine the deformation characteristics as well as damage evolution during extrusion.