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성인에서 발견된 Albright 선천성 골이형성증을 동반하지 않은 가성부갑상선기능저하증 1예
이윤범,노정민,유정선,한정우,남지선,조민호,박종숙,안철우,김경래 대한내분비학회 2009 Endocrinology and metabolism Vol.24 No.2
Pseudohypoparathyroidism is a rare disease caused by resistance to parathyroid hormone, and is associated with typical clinical typical symptoms such as tetany and seizures, hypocalcemia, hyperphosphatemia and increased parathyroid hormone levels. Pseudohypoparathyroidism is classified to Type Ia, Ib, Ic and II according to the clinical and biochemical manifestations. Type Ia and Ic have morphological characteristics called Albright's hereditary osteodystrophy. Type Ib differs from type II for the pathogenesis. Type Ib may~ receptors and type II may~ pathway, but the pathophysiology of type II is not clear yet. Administration of parathyroid hormone extract may help to distinguish between the two types. We report a case of a pseudohypoparathyroidism type Ib or II patient who had tetany, hypocalcemia and hyperphosphatemia with normal morphologic features.
製劑中 Phenylpropanolamine Hydrochloride의 Dansyl 誘導體에 依한 螢光分析法 硏究
李允中,李康春,尹汝生,金在鉉,崔点洙 成均館大學校 1982 論文集 Vol.31 No.-
A simple, rapid and sensitive fluorometric assay for phenylpropanolamine hydrochloride was developed based on their interacion with I dimethylaminonaphthalene-5-sulfonylchloride(Dansyl chloride) in acetone to yield fluorescent compound, with excitation and emission wavelengths of 350 and 495 nm, respectively. A study of optimum pH, reaction time, temperature and dansyl chloride concentration is presented. Fluorescence is linear the range 1∼7μg phenylpropanolamine hydrochloride per ml of sample. The fluorescence was stable for at least 2 hours. Application of the procedure to the analysis of phenylpropanolamine hydrochloride in dosage forms gave an accuracy 1∼4%.
하유리피판의 재건 실패 환자에서 보존적 치료로 치유한 2증례
이윤세,최성원,임윤성,왕수건 대한이비인후과학회 부산,울산,경남 지부회 2010 임상이비인후과 Vol.21 No.2
Since the introduction of microvascular surgery, free flap reconstruction has become an integral part of the management of head and neck cancer. Although microvascular skills and instruments have improved, failure of free flap reconstruction is inevitable and frequently leads to devastating results. Most of failed cases are caused by vascular thrombosis that is usually treated by either medical therapy or salvage reconstruction. When patient cannot run the risk of additional surgery, salvage reconstruction is not feasible. Conservative treatment after failure of free flap reconstruction would be another option in carefully selected cases. Conservative care contains medical management, watchful observation for fistula formation and frequent dressing. We reports two cases of patients who were treated with conservative management after failure of free flap reconstruction and reviewed literatures. (J Clinical Otolaryngol 2010;21:283-287)
마이크로 웨이브 集積 回路를 위한 마이크로 스트립 線路에 關한 연구
李潤鉉 한국항공대학교 1986 論文集 Vol.24 No.-
Microstrip line is a very attractive transmission line for microwave integrated circuit applications involving a large number of identical units and requiring a high density of packaging. This paper presents the network model and a hybrid-mode solution for the frequency dependent solution, phase velocity, characteristic impedance of microstrip lines on lossless dielectric substrate. This analysis is used in conjunction with Carlin's model in order to find the frequency dependence of the propagation constant and the characteristic impedance of dispersive microstrip lines. The propagation constant thus obtained is identical with that of Carlin and the characteristic impedance of the coupled lines decreases with frequency. In the present work we shall considera other parameters on the basis of two microstrip models due to Getsinger and Calin respectively. Numerical result are presented showing the frequency dependende of both wavelength and characteristic impedance for microstrip lines.