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주침샘의 병변 없이 경부림프절에 발생한 Warthin씨 종양 1예
이용수(Young-Su Lee),박지수(Ji-Su Park),나기상(Ki Sang Rha),구본석(Bon Seok Koo),장재원(Jae Won Chang) 대한두경부종양학회 2015 대한두경부 종양학회지 Vol.31 No.2
Warthin’s tumor is the second most common salivary gland benign tumor, typically occurring in the fifth to seventh decades of life which shows an indolent feature. It is usually found in the parotid gland but occasionally in extra-parotid locations such as peri-parotid lymph node. However, Report of solitary Warthin’s tumor in cervical lymph node is unusual. We here report a case of 72-year-old male with simultaneous malignant melanoma on eyelid and cervical lymph node enlargement in cervical level II area thus mimicking malignancy metastasis. After excisional biopsy under the local anesthesia, pathology was reported as papillary cystadenoma lymphomatosum, which is a histologically pathognomic finding of Warthin’s tumor. However, there was no suspicious tumorous lesion in major or minor salivary glands. This case suggests that Warthin’s tumor should be considered as a possible pathology in solitary lymph node lesion of neck.
시험조건과 고강도콘크리트의 압축강도 관계에 관한 실험적 연구
진영길,이용수,김광서,Chin, Young-Gil,Lee, Yong-Su,Kim, Kwang-Seo 한국건축시공학회 2002 한국건축시공학회지 Vol.2 No.2
The strength and durability of concrete are affected by various factors such as the quality of material, mixing ratio, construction, the method of cure, time elapsed. the condition of test and etc., it is very difficult to pre-estimate the strength of concrete with the use of experimental specimen. The domestic standard of specimen cylindrical type and its sizes are both l0cm$\times$20cm and 15cm$\times$30cm, which are prescribed in KS F2405, and the loading speed is prescribed to test with 2~3kgf/$\textrm{cm}^2$ per second. The loading speed should have great effect on the compressive strength, but in reality in the construction site sometimes the loading speed is applied so dubiously that the value of the compressive strength can be unreliable. And the cross sectional area of a specimen should be level and smooth, otherwise it can be broken at a lower stress than the real strength through the eccentric or intensive working of the load. Capping should be carried out in order to measure the strength correctly. And used for capping are various materials such as capping compound, cement glue, plaster, mechanical grinding and etc. In this study, therefore, I have carried out an experiment on the relationship among the loading speed, the ratio of height to diameter of specimen, the method of capping, and the compressive strength, for the efficient quality control of concrete structures. So this study has been purposed to provide some basic data that can be used effectively at construction sites.
경량기포콘크리트 외장패널에 사용하는 강재 L형 앵커의 인발내력에 관한 실험적 평가
박준수(Park Jun-Su),김영호(Kim Young-Ho),이용수(Lee Yong-Soo) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
The exterior system of buildings has been made with glass and metal. The concern for Autoclaved Lightweight Concrete recently has grown and it possesses the great energy efficiency and the superb insulating quality compared with existing glass or metal. This study presents the evaluation of the pullout strength of L-shaped anchor for setting up ALC panel. The effects of the embeded depth, shapes of L-type anchors are considered by testing parameters. Result from testings, the pullout strength is a little different with shape and bearing area of anchors.