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귀밑샘의 형질세포와 호산성 조직구를 다량 함유한 림프절외 변연부 B-세포 림프종의 세침흡인 세포검사 소견 -1예 보고-
이영석,안정석,채양석,염범우,최종상,김철환,Lee, Young-Seok,An, Jung-Suk,Chae, Yang-Seok,Yeom, Bom-Woo,Choi, Jong-Sang,Kim, Chul-Hwan 대한세포병리학회 2007 대한세포병리학회지 Vol.18 No.2
The authors present the fine needle aspiration cytology (FNAC) cytologic findings of a case of extranodal marginal zone B cell lymphoma (MZBCL), which featured abundant plasma cells and eosinophilic histiocytes arising in both parotid glands. A 49-year-old female presented with palpable masses in both parotid glands. She had been suffering from systemic lupus erythematosus and rheumatoid arthritis. The lesions were evaluated by FNAC and smears showed a small number of clusters of oncocytic cells with abundant eosinophilic granular cytoplasm and small nuclei, intermixed with small to medium-sized lymphoid cells containing round to lobulated nuclei, which suggested Warthin's tumor. Some of lymphoid cells had a plasmacytoid appearance, and some scattered large cells contained a large amount of eosinophilic cytoplasm. Bilateral superficial parotidectomy was performed and a histopathologic study indicated MZBCL with abundant plasma cells, intermixed with eosinophilic histiocytes. The presence of oncocytic cells and a mixture of lymphoid and plasma cells indicates Warthin's tumor, but the cytologic features of a relatively monotonous small to medium-sized lymphoid infiltrate suggest the possibility of MZBCL in the clinical setting of an FNAC study performed on a patient suffering from a connective tissue disease.
무기인산염이 골재생에 미치는 효과에 대한 조직계측학적인 연구
이영석,박준봉,권영혁,허익,정종혁,주성숙,Lee, Young-Seok,Park, Joon-Bong,Kwon, Young-Hyuk,Herr, Yeek,Chung, Jong-Hyuk,Jue, Seong-Suk 대한치주과학회 2007 Journal of Periodontal & Implant Science Vol.37 No.1
In this study, author examined the effect of the concentration of the inorganic polyphosphate on the process of the bone regeneration by using the 6 weeks old rabbit with the weight of 2.0kg in average. we performed the experiment by using TR-eITFE membrane filled with collagen immersed with 1%, 2%, and 4% of inorganic polyphosphate, respectively, after removing the proper sized cort-ical bones from the calvaria of rabbit. The experimental results were compared with the one of the following four groups: The control group for membrane only, experimental group I for membrane filled with collagen im-mersed with 1% of inorganic polyphosphate, experimental group II for membrane filled with collagen immerse with 2% of inorganic polyphosphate, experimental group III for membrane filled with colla-gen immersed with 4% of inorganic polyphosphate. The fragments of the tissue with membrane were obtained from each group of the sacrificed rab-bits for 4 or 8 weeks sustained after surgery, were then prestained and coated. New bone formation was assessed by histomorphometric and statistical analysis. We may draw the conclusions from these experiments as following: 1. Collagen was an excellent carrier with a minimal inflammatory reaction and sustaining the form. 2. The sample of the 8th week group has shown the best bone regeneration compared with the cases of all groups including the control group. 3. The samples of collagen immersed with 2% and 4% of inorganic polyphosphate have shown more bone regeneration relative to the sample of the 1% inorganic polyphosphate. 4. The new bone regeneration was shown actively in the group for membrane filled with collagen immersed with 4% of inorganic polyphosphate. With above results, it is strongly suggested the use of inorganic polyphosphate with vehicle under TR-eITFE membrane.
이영석(Young-Suk Lee) 역사비평사 2020 역사비평 Vol.- No.131
The paper aims to shed new light on efforts by various European countries to prevent the epidemic through international co-operation in the nineteenth century when the cholera epidemic frequently attacked Europe. In the early days of the cholera outbreak, European countries relied only on indiscriminate quarantine measures to prevent damage. As a result, international trade and commerce had been thrown into great confusion. In order to prevent such confusion, the International Sanitary Conference tried to come up with a common standard for quarantine and sanitary measures. Through several sanitary conferences, European countries were able to reduce cholera damage by developing standardized responses using modern medical knowledge. In the process, Britain, the hegemonic power of the day, took a passive attitude, and other countries, including France and Austria, led the conferences. Historians call this effort to solve the problems at hand through international co-operation in the late 19th century a new internationalist movement. This new internationalist movement led to the establishment of a permanent organization called the Office international d’hygiène publiqye in 1907. In the age of the coronavirus outbreak, international co-operation and quarantine led by the existing WHO are losing power. Nowadays many countries are returning to the quarantine system of the 19th century. It is very important to create a new pattern of international co-operation. The International Sanitary Conferences in the late 19th century offers an important lesson in creating a new framework for the international co-operation of quarantine activities against the present viruses.
이영석(Young-Suk Lee) 한국서양사연구회 2014 서양사연구 Vol.0 No.50
After the dissolution of the British empire, British historians have hesitated to examine directly the history of the empire for a long time. Critical reflection of colonialism urged historians to change their attitudes to find self-satisfactory explanations from the dissolution. Increased researches on the empire after the 1990s show that now British historians could historicalize the history of the British empire free from colonialism complex. What is more important, here, is the fact that ‘historicalizing the empire’ has been related to Anglo-centric perspectives explaining the dissolution as a successful adaptation to new international order initiated by two super-powers. Recent studies on the British empire were little influenced by post-colonial theories. On the problems of acculturation and adaption in culture, British historians usually focus on globalization of the British culture, emphasizing the expansion of the British culture, which have been realized through the network of the British empire. This paper purposes to examine the explanations of culture in Niall Ferguson, David Cannadine and John Darwin’s works on imperial history. They are little interested in the influence of inpouring foreign cultures into the British culture and cultural hybridity. To understand the history of the British empire more deeply, we need to reflect some relations between the British culture and colonial ones and to examine aspects of acculturation of the British culture through imperial expansion.
미세조직 분석을 통한 잠수함 탈출트렁크 해치 스프링 파손에 관한 연구
이영석(Young-Suk Lee),최우석(Woo-Suk Choi),김병호(Byeong-Ho Kim),윤지수(Ji-Soo Yun) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.1
본 연구는 미세조직 분석을 통한 잠수함 탈출 트렁크 해치 스프링 파손부 개선에 관한 내용으로 잠수함 건조중 발생한 탈출 트렁크 파손에 대한 발생원인 및 개선방안에 대해서 검토 하였다. 탈출 트렁크 스프링 파괴에 대한 원인규명을 위해서 파손된 제품에서 시편을 채취하여 형광분석기를 이용한 재질의 화학성분을 비교 분석 하였고, 기계적 특성 변화를 검토하기 위해 파손부 주위로 비커스 경도를 측정 하였다. 특히, 스프링 파손부는 광학현미경 및 주사전자현미경을 이용하여 파면을 심층적으로 관찰하여 균열의 시작점 및 전파 경로를 확인하여 파괴에 대한 원인을 규명하고자 하였다. 최종적으로는 스프링 파손 원인 규명을 통한 스프링 형상 설계 방안을 제시하였고, 추가적으로 내부식성 및 내마모성이 우수한 나일론 도장을 도포하여 신규로 개선된 스프링을 제작 하였다. 실제 건조중인 잠수함 트렁크 해치에 부착하여 시험한 결과 기존 제품에 비해 해치 여닫음 시 스프링 간 접촉에 의한 도장 벗겨짐 현상이 감소하여 개선의 효과를 확인 하였다. This study examines the damage to the submarine"s escape trunk hatch spring through microstructure analysis. The cause of the escape trunk"s damage during the submarine"s construction and its improvement measures were reviewed. To determine the cause of breakage of the escape trunk spring, samples were taken from the damaged product and analyzed for chemical composition, hardness, and microstructure. In particular, the breakage part of the spring was analyzed in-depth by using a scanning electron microscope to determine the cause of corrosion destruction. Finally, a spring shape design method was proposed through the investigation of the cause of spring breakage. In addition, a newly improved spring was produced by applying a nylon coating with excellent corrosion resistance and abrasion resistance. Applying to an actual submarine trunk hatch revealed that the coating peeling phenomenon due to the contact between the springs is significantly improved when the hatch is opened or closed compared to the existing products.