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만성 골수성 백혈병에서 골수 Hemosiderin 의 의의
하승우(Sung Woo Ha),손상균(Sang Kyun Shon),김광원(Gwang Weon Kim),이규보(Kyu Bo Lee),황기석(Kee Suk Whang) 대한내과학회 1989 대한내과학회지 Vol.37 No.2
N/A We studied the relationship among the level of bone marrow hemosiderin, clinicohematologic findings and ferrokinetics. The subjects were patients taken from 30 cases who had been diagnosed as chronic granulocytic leukemia at Kyungpook National University Hospital from January 1980 through July 1988. Among these 30 cases 22 cases (73.3%) had a de- creased level of bone marrow hemosiderin. One case(3.3%)had an increased level of bone marrow hemosiderin while 7 eases(23.3%)were normal. In all cases, the level of serum ferritin was likely to be decreased but it was within the normal range. The 7 eases (22.3%)had an increased level of serum ferritin and 23 cases(77.7%)had a normal level. The level of serum iron was increased in 18 cases(60.0%)but decreased in 12 cases(40.0%). Among 15 cases with a study of the half life of plasma iron disappearance, the half life was shortened in 2 cases (13.3%), lengthened in 5 cases(33.3%)and normal in 8 cases(53.3%). There was no correlation between the degree of splenomegaly and the level of bone marrow hemosiderin. However, as the spleen became larger, the level of bone marrow hemosiderin tended to decrease. In 9 cases, there was an occurrence of blast crisis. The level of bone marrow hemosiderin was decreased in 3(33.3%)of the 9 cases, normal in 4 of the cases(44.4 %) while slightly increased in the other 2 cases(22.2%). The level of serum ferritin was normal in 6 of the 9 cases(66.7%)and increased in 3 cases(33.3%). The level of serum ferritin was below normal range in 5 out of 9 cases(55.6%) and within normal limits in the other 4(44.4%). The chronic granulocytic leukemia patients had a tendency to have a decreased level of bone marrow hemosiderin while the patients with blast crisis showed a tendencey to have an inceased level of bone marrow hemosiderin.
가족적으로 발생한 쿠싱증후군 - 색소침착성 다결절성 부신피질 이형성증 3 예 -
하승우(Sung Woo Ha),김신우(Shin Woo Kim),김정국(Jung Guk Kim),서예경(Ye Kyung Seo),김보완(Bo Wan Kim),정성광(Sung Kwang Chung),김법완(Bup Wan Kim),박윤규(Yoon Kyu Park),장세국(Sae Kook Chang),손윤경(Yoon Kyung Sohn),곽정식(Jyung Sik 대한내과학회 1995 대한내과학회지 Vol.49 No.2
Pigmented multinodular adrenocortical dysplasia is a rare cause of Cushing's syndrome in infants, children and young adults. The disease is characterized by an ACTH independent adrenocortical hyperfunction without autonomously functioning adrenocortical neoplasm. Clinical symptoms are features of Cushing's syndrome and spotty facial pigmentation (lentigines and blue nevi). The bio- chemical findings include: 1) no suppression of urinary corticosteroid excretion after administration of dexamethasone. 2) no response to metyrapone or ACTH administraion; and 3) undetectable, low, or normal plasma levels of ACTH. Adrenal glands are normal or slightly enlarged and may or may not have discernible nodules on computed tomography scans. Bilateral total adrenalectomy cures the Cushing's syndrome. The familial occurrence, especially when to be found in combination with extra adrenal disorders, was considered indicative of 'Carney's complex'. Recently we experienced 3 cases of Cushing's syndrome due to pigmented multinodular adrenocortical dysplasia in one family, so we report the cases with a review of literatures.
대형 보일러 와이어로프 노내비계 및 인양시스템에 관한 연구
하승우(Seung Woo HA),이태호(Tae Ho Lee),이해승(Hae Seung Lee),김정민(Jeung Min Kim),전상욱(Sang Wook Jeon),조선영(Sun Young Cho) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
For the stable supply of electricity, the boiler of large-sized coal-fired power plants are being operated in very poor conditions such as continuous operation in high temperature and high pressure condition or repeating of start-up and shutdown. So, it is essentially required to perform periodic inspection and maintenance on them to secure their reliability. In particular, a lot of works are performed in the boiler furnace during preventive maintenance period to prevent the problems expected in the operation, and the most important consideration for this time is the securing of safety for the workers to pursue effective workability. Existing scaffolding systems are assembled in stacking up manner with base foundation in the lower ground, which causes the load concentration in the lower part. So, if there are some problems in the members, the scaffolding system will eventually collapse. So, in this study, safe furnace scaffolding system is to be developed by dispersing the load in the upper part, as well as minimizing the hazard of serial collapsing. Also, for the cases where direct installation of wire-rope type furnace scaffolding is challenging due to the structure of the boiler tube, the lifting system for the installation of furnace scaffolding is to be developed so that the wire-rope type furnace scaffolding can be supported to secure the integrity of the power generating facilities. The scaffolding system to be developed in this study allows partial disassembling and installation while maintaining safety for even the interfered parts when maintaining and replacing the large-sized components such as the tube panel and water wall by the benefit of the characteristics of the upper-supporting system which contributes to the time saving and easy maintenance of the workers. The design on the scaffolding system for this study was performed by comparing and analyzing the steel-frame structures of the boiler upper part and inner tube structures with their drawings. Also, stress analysis, structural analysis as a complete assembly, performance for the members, and mock-up test were performed simultaneously to secure safety, as well as apply the scaffolding system to 500㎿ supercritical coal-fired power plants successfully.
자전거 주행환경이 자전거 통근자 경로선택에 미치는 영향에 관한 연구
김수성(Kim Sung-Su),송기욱(Song Ki-Wook),정헌영(Jung Hun Young),하승우(Ha Seung-Woo) 대한국토·도시계획학회 2011 國土計劃 Vol.46 No.2
Recently, bike policies are seeking various solutions on the culture of bicycle use and the Up-grade for the environment of bicycle use. But the efforts of local governments is desperately needed still. The bike-related research gained momentum after 2007 years in the social. The recent bicycle-related research trends has been changed from macro-perspective in the political to the solution of practical problems in the aspect of bicycle use. Thus, according to these research trends, this study considering the driving conditions of cyclists were carried out for on the bike commuter route-choice. And bicycle commuter route survey were recruited on Changwon City Hall officials. And analysis on the bike commuter route will review the impact on the environment and the effectiveness of bicycle commuter route to investigate the data on the biking environment through logit model. In this study, analysis reviewing a bike commuter route choice is considered to be a reference materials to improve the bicycling environment.