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황성태,심기천,한나연,박범진,김민주,이정현,성득제 대한자기공명의과학회 2017 Investigative Magnetic Resonance Imaging Vol.21 No.1
Progressive transformation of germinal centers (PTGC) is an atypical feature seen in lymph nodes with unknown pathogenesis. PTGC most commonly presents in adolescent and young adult males as solitary painless lymphadenopathy with various durations. Cervical nodes are the most commonly involved ones while involvements of axillary and inguinal nodes are less frequent. PTGC develops extremely rarely in other locations. We report a rare case of solitary mass present in the presacral space. The mass as subsequently proven to be PTGC. To the best of our knowledge, PTGC in the presacral space has not been previously reported in the literature.
Radiologic Findings of Renal Schwannoma: A Case Report and Literature Review
황성태,성득제,심기춘,한나연,박범진,김민주,이정현 대한영상의학회 2018 대한영상의학회지 Vol.78 No.4
Schwannoma is a benign nerve sheath tumor that involves Schwann cells mostly found in the head, neck, posterior mediastinum and extremities. Schwannoma develops rarely in the retroperitoneum; thus, renal schwannoma is extremely uncommon. Differentiation of renal schwannoma from renal cell carcinoma is difficult with radiologic analysis. A few cases of these tumors have been reported in literature, and little has been described regarding imaging appearances. In this study, we present a rare case of a renal schwannoma, resembling renal cell carcinoma, with radiological correlations.
이방향성 형상기억합금을 이용한 공동 주택용 방화 댐퍼 설계 연구
황성태,이찬희,장진수,변창수,히식수렝,이상욱 순천향대학교 산업기술연구소 2022 순천향 산업기술연구소논문집 Vol.28 No.2
The purpose of this paper is to redesign, compare, and study using bi-directional shape memory alloy spring to compensate for the shortcomings of the existing fire damper performance. Through the spring constant measurement experiment, using the difference in force between the coil spring and the shape memory alloy spring, the damper closes when the set temperature is reached, and opens again when the temperature is lowered. In addition, the internal structure was redesigned through smoke leakage experiments. As a result, semi-permanent usable dampers were modeled.
수용액중에서 분산제가 초미립자의 분산과 응집에 미치는 영향
황성태,장경환,정경락 全北大學校 1996 論文集 Vol.42 No.-
The dispersibility of ultrafine particles is affected by the kinds and amount of dispersants. The optimum dispersive condition for ultrafine particles was determined from the measurement of the zeta-potential and particle size distribution at concentrations. The zeta-potential and the particle size distribution of dilute suspension was measured using the light scattering method. Also, the influence of kinds and amount of diapersants on the dispersion of TiO_2 fine particle in water is discussed by the DLVO theory. In particular it is shown that the optimum concentration of a dispersant obtained experimentally is approximately in accordance with the concentration of the dispersant showing the maximum total potential energy(V_Tmax) calculated from the DLVO theory which is coincident with the one showing the maximum zeta-potential.
황성태,김병호,정지영,김광락,정경채 한국공업화학회 1998 응용화학 Vol.2 No.1
Corrosion in molten sodium systems results in liberation of hydrogen. Sodium hydride thus must be removed by the purification system. In order to study the dehydrogenation behavior, a dynamic crystallization analysis was carried out on a cold trap packed with wire mesh packings. This analysis accounted for mixing in the crystallizer, hydride buildup on the packing, and precipitation of hydride in different portion of packing section. The results showed that this model would be useful for assisting cold trap designer to achieve the optimum design for specific application.