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최영화,김이성,박강근,Choi, Young-Wha,Kim, Ie-Sung,Park, Kang-Geun 한국공간구조학회 2010 한국공간구조학회지 Vol.10 No.4
콘크리트의 사용은 건축 및 토목분야에서 널리 사용되어 왔으며, 센서는 콘크리트에 기능적 특성을 위해 사용되어 왔다. 손상을 스스로 나타내는 콘크리트는 이미 개발되고 있는 중에 있다. 본 연구에서 온도보상센서는 금속의 선형팽창과 체적변형을 이용한 센서이다. LED는 광센서로 고휘도이며, 이들 센서의 가격은 저가격이다. 화재하중으로 인하여 콘크리트 보의 온도보상센서가 동작하는 동안 지상 보의 LED동작으로 콘크리트 부재의 온도상승을 예측한다. 본 연구에서는 부재의 손상감지를 위해 간단한 계측방법을 이용하여 화재자현을 스스로 나타내는 콘크리트 보를 개발하기 위한 기초적 연구이다. Use of concrete has undoubtedly become widespread in construction and civil engineering. Sensors are used to add functional characteristics to concrete. Self-diagnosis concrete is also being developed. The thermal protector used in the study is a sensor using the linear expansion and cubical expansion of metal. The LED(Light Emitting Diode) is a phototransistor type, and to secure high-sensitivity light, the prices of these sensors are low. Rising temperatures of concrete elements can be predicted from LED of the external virtual beam due to operation of thermal protector sensors of concrete beam caused by fire load on the concrete specimen. In this study, the development of fire-diagnosis concrete using composite sensors are the fundamental study for damage detection using simply measurements.
Liquid-Based Cytology of Villoglandular Adenocarcinoma of the Cervix: A Report of 3 Cases
최영화,김해령,최해영,황대현,최기영,정진행,박소연,이혜승,백진호,박효진 대한병리학회 2012 Journal of Pathology and Translational Medicine Vol.46 No.2
Villoglandular adenocarcinoma (VGA) is a rare subtype of cervical adenocarcinoma with a more favorable prognosis compared to conventional adenocarcinomas. Although the tumors are usually recognized on colposcopic examination due to the mainly exophytic growth pattern, they may be underdiagnosed as benign lesions by cytology because of their minimal cytologic atypia. We report the liquid-based cytology (LBC) findings of three histologically confirmed VGAs which we have recently identified. They were characterized by hypercellular smears on low-power examination with smooth-bordered three-dimensional papillary fragments. The nuclei were relatively uniform with irregular nuclear membranes. Nucleoli were small but distinct and macronucleoli were also seen. The abnormal architectural patterns such as papillary structures and nuclear overlapping and nuclear hyperchromasia are important clues to the diagnosis of VGA. In addition, nuclear membrane irregularity and prominent nucleoli can be recognized on LBC specimens, further facilitating its diagnosis.
최영화 대구대학교 산업기술연구소 1986 産業技術硏究 Vol.5 No.-
Recently it is one of the big problems to provide aggregate of good quality and grading for cement mortar and concrete because of river aggregate shortage. So this study is designed to provide the fundamental data for the application of waste concrete by analysing the mechanical properties of cement mortar which is made of the reproduced fine aggregate with addmixture in various mixing proportions. In conclusion, reproduced fine aggregate made of wast concrete is very useful in the respect of reusing waste resources, though the strength of cement mortar with reproduced fine aggregate is lower than that of cement mortar with river sand.