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      • 현장관측을 통한 목포항 인근의 조류특성 분석

        강주환,오남선,문승록,박선중 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-

        Tidal characteristics have changed severely after constructions of seadike/seawalls near Mokpo Harbor. Tidal velocity of three layers, buoy paths and suspended sediment distributions are observed near there. The results can be useful database for calibrations of various numerical simulations for coastal and estuarine studies near Mokpo coastal zone.

      • KCI등재

        Macrophage Inflammatory Protein-1α의 浩血幹細胞 억제 작용에 관한 실험적 연구

        고승오,서기향,신효근,김오한 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.2

        The proliferation of bone marrow stem cell compartment is thought to be under both positive and negative controls by cytokines and colony stimulation factors. Macrophage inflammatory protein-1α(MIP-1α) has been assessed for its potential to protect hematopoietic stem cells from cytotoxic effects of a cycle-specific antineoplastic agents. We have tested the ability of MIP-1α to suppress the proliferation of stem cell line Du.528.101 in variety of active status by using [³H]-thymidine incorporation test. The results were as follows. 1. The effect of MIP-1α on steady-state Du.528.101 cell represented the cell growth suppression at the concentration of 10, 50, 100nM of MIP-1α(P<0.001). 2. MIP-α stimulated the proliferation of Du.528.101 cells previously treated with IL-1 at the concentration of 5, 50nM of MIP-1α(P<0.01) 3. The suppression effect of MIP-1 on Du.528.101 cells at the concentration of 5, 50nM was shown when cells were treated with MIP-1α before activation with IL-1β(P<0.01). 4. The growth rate of synchronized cells were slower than that of non-synchronized ones, and MIP-1α represented the similar suppression effect on both synchronized and non-synchronized cells.

      • 수부의 외상성 중수지 관절 탈구의 치료

        이승구,송석환,이주엽,문창윤,오재찬 대한골절학회 2003 대한골절학회지 Vol.16 No.2

        목적 : 수부의 중수지 관절 탈구의 관혈적 정복이 필요했던 예에서는 정복을 방해하는 구조물에 대해 분석하고 도수 정복이 가능했던 예에서는 성별 및 탈구 형태에 따른 특성에 대해 알아보고자 하였다. 대상 및 방법 : 총 27예의 수부 중수지 관절 탁구 환자 (무지 11예, 이지 14예, 소지 2예)를 대상으로 연구하였다. 탈구된 중수지 관절의 정복을 방해하는 해부학적 구조는 수술시에 확인을 하였으며, 도수 정복이 가능하였던 예들에서도 연령과 손상된 구조물, 그리고 최종적인 임상 결과를 평균 7개월간 추시 관찰하였다. 결과 : 무지 중수지 관절의 탈구 11예 중 파열된 전방 관절낭, 수장판과 단무지 굴건의 파열을 동반한 복합 탈구가 8예 있어 관혈 정복을 시행하였으며, 2예에서만 도수 정복이 가능하였다. 관절염이 있던 1예는 관절 유합술을 시행하였다. 다른 수지의 중수지 관절의 탈구는 Kaplan의 개념에 따라 탈구를 수술 정복하였고 파열된 수장판을 복원하였으며, 1예에서 수술시 표재 중수 횡인대만의 절개와 이완으로 정복할 수 있었다. 소지 중수지 관절 탈구의 2예에서 파열된 요측 측부인대가 수술시 관찰되었고 이를 복원하여 수지의 불안정성을 예방하였다. 이들의 최종 결과는 특별한 운동 제한이나 불안정성 없이 좋은 결과를 보였다. 결론 : 적절한 국소 마취하에 도수 정복을 1~2회 시행할 수 있지만 단순 정복이 가능한 탈구가 부적절한 견인으로 정복이 불가능한 복합 탈구로 진행할 수 있다. 그리고 복합 탈구는 대부분 관혈적 정복이 필요하기 때문에, 정복 방해 구조물에 대한 충분한 이해와 적절한 조치가 필요하다. Purpose : To analyse the obstacles to prevent the reduction for dislocation of the metacarpophalangeal (MP) joints of the hand and evaluate the relationship between the sex and dislocation type in closed reduction case. Materials and Methods : Total 27 cases of MP joint dislocation of the hand (11 cases of thumb, and 14 index and 2 little finger) were reviewed retrospectively. The anatomical structures to prevent the reduction were confirmed at operation and the cases which were reduced immediately were also analysed for their ages and differences of damaged structures, and finally their complications or outcome were reviewed for average 7 months after reduction. Results : In 11 cases of thumb MP joint dislocations, the complex dorsal dislocations in which the protruded metacarpal neck was caught by buttonhole of torn anterior joint capsule, volar plate and FPB were reduced by open method in 8 cases, and closed reduction was done in 2 cases but one old case required arthrodesis. In other finger MP joint dislocations, the Kaplan's concept to prevent the reduction was confirmed. But reduction of torn volar plate and incision of transverse metacarpal ligament were sufficient to reduce the dislocation with gentle longitudinal traction during the operation. In two cases of little finger MP joint dislocation, the ruptured radial collateral ligaments were noted after open reduction and it must the repaired to prevent the finger instability later. Their overall end results were good without any significant restriction of MP joints motions and finger instabilities. Conclusion : One or two times of closed reduction with proper local anesthesia could be tried, but simple reducible dislocation can be converted to complex irreducible ones by the inappropriate traction method, and so proper reduction technique by closed or even in open way is important with the knowledge of anatomical obstacles to prevent the reduction of the metacarpophalangeal joints.

      • KCI등재

        관절성형술 및 측두근막 이식술을 이용한 악관절 강직증의 치험례

        진택현,오승환,류동목,김여갑,이상철 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.1

        This is a case of bony ankylosis of right temporomandibular joint with mild facial asymmetry resulted from trauma, which bring about the right condylar fracture, and corrected by interpositional arthroplasty with temporal fascia flap and coronoidectomy. The postoperative results were functionally and esthetically good, but continued osbervation is necessary to evaluation of abnormal bony growth and reankylosis.

      • 생쥐 정소 발달과정에 대한 미세구조적 연구

        안영모,오승한,이정환,김완종 순천향대학교 기초과학연구소 2001 순천향자연과학연구 논문집 Vol.7 No.2

        Differentiation and development of the mouse testis were studied by light and electron microscopes from the newborn up to the adult stage. The purpose of the present study was to investigate the morphological changes of developing germ cells in seminiferous tubule and Leydig cells in interstitial tissue during the developmental process of mouse testis. The results were as follows: the seminiferous tubule diameter began to increase from 1 day and was fully developed at the 30th day after birth, particularly, the seminiferous tubule diameter was rapidly increased between 15 days and 30 days of age. Germ cells of various stages were embedded in cytoplasm of the Sertoli cell. Leydig cell contained numerous mitochondria with tubular cristae and well developed smooth endoplasmic reticulum. Spermatogonia were located close to the basal layer. Spermatocytes were connected to each other by the intercellular bridge until the late spermatid stage. An acrosome located to the head apex and the microtubule arrangement of flagellum shown the typical "9+2" pattern. At the newborn stage, the Sertoli cell and germ cells started to be already differentiated. Spermatids and immature spermatozoa were appeared at 30 days of age, and thereafter, spermatogenesis occurred actively. In conclusion, the development of mouse testis was completed after 30 days of age at which the secondary sexual characteristics and the spermatogenesis began to occur. These results suggest that ultrastructural features of developing germ cells and Leydig cell were thought to have close interrelationship with their functional accomplishment.

      • KCI등재

        점막유표피암종의 치험례

        신민철,윤옥병,오승환,김여갑,이상철,신민철 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.1

        Mucoepidermoid carcinomas, first reported by Volkman(1895), form 6% to 9% of all salivary tumors. Two thirds affecting the parotid gland and the remaining third, the minor glands. As we could know from its name, mucoepidermoid carcinomas originate from ductal epithelium including squamous, mucous-secreting, and undifferentiated intermediate cells. Histologically, it is classified as well-differentiated (low grade), moderately-differentiated(intermediate grade), and poorly-differentiated (high grade) types and the treatment method and prognosis are influenced from its histological grade. We have experienced two cases of mucoepidermoid carcinoma treated surgically with good results and now would like to report these with review of literatures.

      • KCI등재

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