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김창선,노순성,이훈갑,이기찬,주정화 대한신경외과학회 1979 Journal of Korean neurosurgical society Vol.8 No.2
The authors report two cases of paratrigeminal syndrome. They were male and involved in the left side, and had no known hypertension. The syndrome was produced and encountered in patients who had undergone a percutaneous carotid angiography and surgery with ligation of common carotid artery for, the treatment of carotidcavernous sinus fistulat. The clinical manifestations were unilateral, intense, throbbing supraorbital and periorbital pain recurring regularly, accompanied by drooping of the eye lid and miosis with normal sweating on the same side as the pain. The cases were treated conservatively with diphenylhydantion and antimigraine preparations with apparent success. It is probable that the underlying pathology of the syndrome in these cases may be compression of the internal carotid sympathetic fibers due to swelling of the internal carotid arterial wall. The clinical features and courses were compatible with those of group 2 of Raeder's syndrome.
이선화(Sun Wha Lee),원문섭(Moon Sup Won),노병인(Byung In Ro),장진요(Chin Yo Chang) 대한피부과학회 1984 대한피부과학회지 Vol.22 No.5
We report herein two cases of nevus comedonicus. The first case was developed in the scalp, and the second case was in the right side of breast. In the first case, the lesion of the scalp was completely excised.
이선화(Sun Wha Lee),노병관(Byung Kwan Ro),노병인(Byung In Ro),장진요(Chin Yo Chang) 대한피부과학회 1983 대한피부과학회지 Vol.21 No.2
The pilomatricoma (Calcifying Epithelioma of Malherbe) is rare benign tumor of adnexal keratinocytes. It is occuring usually as a single, asymptomatic, 0. 5 cm to 3. 0 cm sized, deep seated, firm nodule, covered by normal or pink skin. Multiple pilomatricoma is relatively rare, as 3. 5% of reported cases of pilomatricoma. A 21-year-old male patient had 7 subcutaneous nodules on the neck, both upper extremities and trunk for 9 years. We excised one of them, under the impression of calcinosis cutis, cysticercosis cutis or benign skin tumor. But histopathologic findings of the lesion showed the typical pattern of pilomatricoma with shadow cells, calcification and foreign body giant cells. Five of remainders were excised and they showed same histopathological findings of pilomatricoma. The authors presented herein one case of multiple pilomatricoma with the review of literature.
Guinea Pig에서 부신피질호르몬제가 표피 Langerhans세포에 미치는 영향에 관한 실험적 연구
이선화,노병인,장진요 중앙대학교 의과대학 의과학연구소 1987 中央醫大誌 Vol.12 No.3
Langerhans cells have been implicated as playing a key role in the processing and presentation of antigens to lymphocytes in contact allergic cell-mediated immune reactions. The present study was undretaken to investigate the effect of repeated topical and systemic administration of glucocorticosteroids on both Langerhans cell densities and immunologic responsiveness to contact sensitizers applied to the treated Guinea pig. Hydrocortisone or fluocininide was administered daily for 10 consecutive days either topically by application to the skin, or systemically by intraperitoneal injection. Langerhans cell density were determined at various times during anf after glucocorticosteroids treatment by staining for plasma membrane ATPase activity in epidermal sheet preparations and electron microscopy. The Guinea pig were sensitized and challenged with DNFB sfter final glucocorticosteroids treatments. Degrees of hypersensitivities were assayed by measuring the increment of ear swelling in the DNFB challenged control and glucocorticosteroid-treated groups. The results obtained were summarized as follows: 1. Hydrocortisone and fluocininide caused a significant reduction in ATPase-postive Langerhans cell density in dose-related fashion. 2. In electron microscopy the structural alternations of Langerhans cells were cytoplasmic swelling dilation of endoplasmic retculum and perinuclear cisterna, and vacuolar dengeneration. 3. In the course of 10∼14days after cessation of glucocorticosteroids treatment, the density of Langerhans cells returned to normal values. 4. These glucocorticosteroids induced alternation in Langerhans cell density were accompanied by a substantial impairment in inducing hypersensitivity of the skin. 5. The above finding suggested that glucocorticosteroids might exert their inhibitory effects on contact hypersensitivity through altering epidermal Langerhans cell density, this interfering with antigen-pressenting function of these cells.
이선화,노병인,장진요 대한피부과학회 1982 大韓皮膚科學會誌 Vol.20 No.5
Tinea barbae is one of the relatively rare chronic dermatophytosis of adult male, developing on the beard and moustache area of the face. We observed in a 50-year-old male patient who showed atypical clinical findings of tinea barbae. Initially, we impressed sycosis vulgaris, due to diffuse multiple pustular nodules with swelling on the beard area and both cheek of the face. We had treated him by antibiotics anri no improvement was noticed. On the 20th day from first visit, Trichophyton mentagrophytes was identified, and histopathologic exam revealed many spores and hyphae on the hair follicle. His skin lesions were almostly cleared after injestion of 5 months period of griseofulvin.
Performance Evaluation of DS-UWB based Short-range Radar in AWGN Environment
Jai-Chul Song,Dong-Doo Lee,Chang-Wha Lee,Jewel B. Barlow,Kapseong Ro,Jung-Su Han,Hyung Su Lee 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
This paper presents a simulation based feasibility study of Direct Sequence Ultra-wideband technology (DS-UWB) based short-range radar for precision measurements; especially focusing upon development of a working hardware prototype. The use of DS-UWB technology for the short-range radar is well known for excellent power efficiency, less interference signal crossings among multiple homogeneous devices, and high resolution distance measurement, etc. In this study, a prototype hardware design is proposed and necessary simulation study is carried out to investigate the convergence characteristics of pseudo noise (PN) code autocorrelation signal. An additive white Gaussian noise (AWGN) environment is assumed and two types of interpolation method ? linear and Lagrange’s ? are employed for the autocorrelation analysis. The Lagrange’s interpolation method showed a good convergence characteristic.