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박화성 ( Hwa Sung Park ),윤숙정 ( Sook Jung Yun ),이지범 ( Jee Bum Lee ),김성진 ( Seong Jin Kim ),이승철 ( Seung Chul Lee ),원영호 ( Young Ho Won ) 대한피부과학회 2013 대한피부과학회지 Vol.51 No.1
Apocrine carcinoma is a rare malignant epithelial tumor of apocrine sweat glands. It manifests as a painless, slow-growing, firm or cystic red nodule with focal ulcerations. These tumors are capable of hematogenous dissemination to visceral organs and lymphatic spread. Their occurrence has been reported mainly in the axilla and breast area. We present a case of apocrine carcinoma arising from the pubis, where it rarely occurs. An 83-year-old man displayed a 3.5×3.0 cm-sized irregular-shaped mass with a crust. Histopathologic examination revealed a complex glandular appearance of cribriform and cord-like pattern tumor nests throughout the dermis. The tumor was positive in immunohistochemical staining for EMA, PAS diastase, and GCDFP-15. (Korean J Dermatol 2013;51(1): 36∼39)
수술적 절제로 완치된 거대 다발성의 비전형적 표재성 혈관점액종
박화성 ( Hwa Sung Park ),이승철 ( Seung Chul Lee ) 대한피부과학회 2011 대한피부과학회지 Vol.49 No.2
Superficial angiomyxoma (SAM), often referred to as cutaneous myxoma, is a rare benign myxoid tumor of soft tissue. It commonly manifests as a single mass, but is occasionally detected as multiple tumors in Carney`s complex. Nowadays, however, SAM is regarded as an independent cutaneous tumor regardless of whether Carney`s complex is present. SAM occurs most commonly on the trunk, limbs, head, and neck. Herein we report a rare case involving a 21-year-old woman who presented with multiple tumors consisting of a single giant pedunculated mass surrounded by multiple nodules on her left labium major. Histological analysis revealed that the tumors were composed of widely scattered bland spindle-shaped or stellate cells with ill-defined cytoplasm and variably sized vessels within a basophilic myxoid stroma. The tumors were completely removed by total excision and primary closure with an excellent cosmetic outcome. (Korean J Dermatol 2011; 49(2):175~178)
박화성(Park, Hwa-Sung),김옥주(Kim, Ok-Ju) 한국체육과학회 2020 한국체육과학회지 Vol.29 No.4
The purpose of this study is to present basic data and realistic policy directions for future improvement plans through the survey on the employment and system of school instructors. In order to investigate the perception of the members, I visited the unit school and interviewed the physical education teachers. The interview was conducted for five month in June 2019, and an in-depth interview was conducted with a total of six people. The main issues of regular teachers and school officials derived through in-depth interviews were job security and treatment of instructor occupations. Assessing the ability and quality of instructors to teach students, budgeting for school sports clubs at government level for effective sports club activities, It was suggested to establish various systems for the activation of school sports club activities, such as reflection on career and college entrance. First, there are major revisions to administrative and policy reinforcement, such as securing the budget, This is a reality where the budget for sports instructors is very low and the population of sports instructors must be increased for better teaching quality. In addition, sports instructors are new jobs created by job creation and are hired as contract workers, which puts them in jeopardy every year. In this situation, sports instructors increase job insecurity and job insecurity, which can affect job satisfaction and quality of instruction. Therefore, a rational improvement plan such as employment stability through the contract of arms and the transition to public service is needed. Second, institutional support measures include reflecting the career and academic system of sports club activities, and expanding the facilities such as classrooms, equipment, and tools. There are still many students and parents who feel that the major subjects in Korea, English, and Sue are important, and that sports activities are a waste of time. In addition, sports club activities are receiving more enthusiasm because they have no experience in school records. For this reason, awards and participation events through sports club activities should remain in the history and be reflected in the career and college system, and should be introduced in the university entrance system. In addition, school sports activities are conducted at the same time and in the same place as other sports, which affects the class a lot. In addition, as the number of students per sports instructor is large, there is a lack of equipment and class tools necessary for the class, so some students are waiting and some students are participating. Therefore, the expansion of facilities, such as separate places and lacking teaching equipment and tools, should be improved for each event. Third, there are ways to improve the instructor"s work, such as their own teaching methods, curriculum planning, and reinforcement of their leadership capacity through training activities. Sports instructors are expected to teach various sports and develop sports club activities so that students can participate with interest. To do this, you need to create your own teaching methods and course plans so that students can experience a variety of sports activities. In addition, various trainings are underway to revitalize school sports and strengthen leadership skills. Through these trainings, students will have to learn their teaching techniques and instructional know-how to strengthen their competences and make quality lessons.
류화성 ( Ryu Hwa-sung ),박원준 ( Park Won-jun ) 한국건축시공학회 2021 한국건축시공학회지 Vol.21 No.3
본 연구에서는 Lab. 스케일 LIBS 장치를 제작하여 모르타르 내 염화물 분석에서의 LIBS 적용성과 재현성 검토를 수행하였다. 염화물 함량을 조절한 모르타르를 대상으로 기존의 분석방법(XRF, 전위차 적정법)과 LIBS 분석을 동시에 진행하였다. LIBS 분석 결과, 염소이온은 837.59nm 파장에서 검출되었고, 다양한 농도 구간에서의 정밀도를 향상시키기 위하여 전기장 강화를 통한 약 50배의 LIBS 신호증폭을 구현하였다. 수용액 기반의 재현성을 검증을 통하여 LIBS 신호 강도와 Cl농도 사이의 높은 상관관계를 확인할수 있었으며, 콘크리트 염해 내구성 진단에 LIBS적용 가능성을 확인하였다. LIBS has been attracting attention as an analytical method capable of real-time measurement without sample preparation. In this study, a Lab. scale LIBS device was fabricated to examine the applicability and reproducibility of LIBS in the analysis of chloride contents in mortar. The existing analysis method and LIBS analysis were performed simultaneously on the mortar test specimen with the chloride content adjusted. Compared to the chloride content condition of the mortar, the XRF and Potentiometric Titration results also showed a similar trend. As a result of LIBS analysis, chlorine ions were detected at a wavelength of 837.59 nm according to the chloride content condition. In order to improve the precision in various concentration ranges, the LIBS signal amplification of about 50 times through the electric field enhancement was implemented. Through the verification of the aqueous solution-based reproducibility, a high correlation between the LIBS signal strength and the Cl concentration was confirmed, and the possibility of applying LIBS to the durability diagnosis of concrete damage by chloride was confirmed.
다발성 "De Novo" 동맥류 1예 - 증 례 보 고 -
손성호,정영균,김수영,박화성,박혁,이동열,Son, Sung Ho,Jeong, Young Gyun,Kim, Soo Young,Park, Hwa Sung,Park, Hyuck,Rhee, Dong Youl 대한신경외과학회 2001 Journal of Korean neurosurgical society Vol.30 No.2
The development of completely new intracranial aneurysms after previous successfully treated aneurysm is uncommon. A 50-year-old female presented with a case of multiple de novo aneurysm which were an aneurysm of right ophthalmic segment of internal carotid artery and an aneurysm of right A1 artery, 6 years after the clipping of an aneurysm of right posterior communicating artery. She had no history of hypertension, cigarette smoking and use of oral contraceptives, and had no evidence of genetic disorder. The laboratory findings were normal. All de novo aneurysms were clipped by basal anterior interhemispheric approach in one stage due to the direction of the aneurysm of the ophthalmic segment of the internal carotid artery.