갑상선암 및 난소암 병력을 가진 좌측 경부 종물을 주소로 내원한 환자 1례에 대한 증례 보고

정용준(Yong Jun Jeong),오경호(Kyoung Ho Oh),권순영(Soon Young Kwon) 대한두경부종양학회 2020 대한두경부 종양학회지 Vol.36 No.2

Ovarian cancer is common malignant disease with high mortality in the female. However, lymph node metastasis in the head and neck of ovarian cancer is very rare than in para-aortic, pelvic lymph node. A 49-year-old female patient came to our clinic with a left neck mass. After total thyroidectomy and left selective neck dissection for the cervical neck level II, III, IV, V, VI for ovarian cancer and thyroid cancer, she had already undergone chemotherapy (Paclitaxel+Carboplatin) 18 month ago. CT scan showed only lymph node enlargement in left neck level II. Positron emission tomography-computed tomography (PET-CT) revealed a hypermetabolic lesion in same area but no other hypermetabolic lesion, especially in the pelvic and abdominal cavity. Fine needle aspiration cytology revealed metastatic carcinoma. The serum level of CA-125 was elevated to 43.8U/mL, whereas other tumor markers (CA 19-9, CEA) were in the normal range. She underwent a revision of selective neck lymph node dissection for the cervical neck levels I, II, and III, and on the review of surgical pathology, metastatic carcinoma was suspected. Thus, we performed immunohistochemical staining for the tissue; as a result, it was finally diagnosed as metastatic ovarian cancer (positive for CK7, ER and PR, and negative for CK20). Adjuvant chemotherapy (Paclitaxel+Carboplatin) was planned on the tumor board, and the patient successfully received chemotherapy.

나노영가철의 산화,환원에 의한 트리클로로에틸렌 처리특성

박영배 ( Young Bae Park ),정용준 ( Yong Jun Jung ),최정학 ( Jeong Hak Cho ),문병현 ( Boung Hyun Moo ) 한국환경과학회 2014 한국환경과학회지 Vol.23 No.5

This study examined the treatment characteristics of hard-to-degrade pollutants such as TCE which are found in organic solvent and cleaning wastewater by nZVI that have excellent oxidation and reduction characteristics. In addition, this study tried to find out the degradation characteristics of TCE by Fenton-like process, in which H2O2 is dosed additionally. In this study, different ratios of nZVI and H2O2, such as 1.0 mM : 0.5 mM, 1.0 mM : 1.0 mM, and 1.0 mM : 2.0 mM were used. When 1.0 mM of nZVI was dosed with 1.0 mM of H2O2, the removal efficiency of TOC was the highest and the first order rate constant was also the highest. When 1mM of nZVI was dosed with 0.5 mM of H2O2, the first order rate constant and removal efficiency were the lowest. The size of first order rate constant and removal efficiency was in the order of nZVI 1.0 mM : H2O2 1.0 mM > nZVI 1.0 mM : H2O2 2.0 mM > nZVI 1.0 mM : H2O2 0.5 mM > H2O2 1.0 mM > nZVI 1.0 mM. It is estimated that when 1.0 mM of nZVI is dosed with 1.0 mM of H2O2, Fe2+ ion generated by nZVI and H2O2 react in the stoichiometric molar ratio of 1:1, thus the first order rate constant and removal efficiency are the highest. And when 1.0 mM of nZVI is dosed with 2.0 mM of H2O2, excessive H2O2 work as a scavenger of OH radicals and excessive H2O2 reduce Fe3+ into Fe2+. As for the removal efficiency of TOC in TCE by simultaneous dose and sequential dose of nZVI and H2O2, sequential dose showed higher first order reaction rate and removal efficiency than simultaneous dose. It is estimated that when nZVI is dosed 30 minutes in advance, pre-treatment occurs and nanoscale Fe0 is oxidized to Fe2+ and TCE is pre-reduced and becomes easier to degrade. When H2O2 is dosed at this time, OH radicals are generated and degrade TCE actively.

충남 서산지역 대기 중의 오존농도와 그 영향인자와의 관련성

김준겸(Jun-Kyeom Kim),정용준(Yong-Jun Jeong),조영채(Young-Chae Cho) 대한환경위생공학회 2003 대한환경위생공학회지 Vol.18 No.3

This study was conducted to investigate the relation between ozone concentration and the affecting factors in Seosan City of Korea from Jan. 2002 to Dec. 2002. We analyzed the air pollutants such as N0₂, PM10, S0₂, CO and the meteorological factors including solar radiation, air temperature, wind speed and relative humidity. The analytical data were taken statistics by SPSS method. The results were as follows: The seasonal average concentration of ozone were detected 35.0 ppb in Spring, 25.4 ppb in Summer, 23.5 ppb in Autumn and 21.4 ppb in Winter. So the difference of concentrations showed significantly in statistics. The hourly ozone concentration in a day was increased at 7-9 AM, peaked at 3-4 PM. The correlation coefficients was negative to ozone concentration and N02, S02, CO, relative humidity, but positive to solar radiation, air temperature, wind speed. With stepwise multiple regression analysis on the 8 factors such as N0₂, PM10, S0₂, CO, solar radiation, air temperature, wind speed and relative humidity, the seasonal primary factors were air temperature in spring. relative humidity in summer and solar radiation in autumn and winter. The above results suggest that ozone is the secondary pollutant by photochemical reaction as the concentration of ozone was increased with the raise of solar radiation.

급성 Paraquat 중독 후 발생한 급성 신부전 환자 2예

장통영(Tong-Young Chang),정용준(Yong-Jun Jeong),김관식(Kwan-Sik Kim),서관수(Kwan-Soo Seo),한명아(Myung-A Han),신선호(Sun-Ho Shin),김동웅(Dong-Woung Kim) 대한한의학회 2000 대한한의학회지 Vol.21 No.4

일부 농촌지역 노인들의 주관적 행복감과 우울에 관련된 요인

조광희(Kwang-Hee Cho),정용준(Yong- Jun Jeong),조영채(Young-Chae Cho) 한국농촌의학 지역보건학회 2003 농촌의학·지역보건 Vol.28 No.2

BDD를 이용한 멀티플렉서 구조 FPGA에 대한 테크놀로지 매핑

허훈(Hoon Heo),정용준(Young Jun Jeong),황선영(Sun Yong Hwang) 한국정보과학회 1993 한국정보과학회 학술발표논문집 Vol.20 No.2

본 논문은 BDD(Binary Decision Diagram)을 이용한 멀티플렉서 구조 FPGA의 테크놀로지 매핑 알고리즘을 기술한다. 제안된 알고리즘에서는 대상회로와 논리 모듈이 구현 가능한 회로를 BDD로 모델링하여 그 모델링된 BDD사이의 매칭을 수행한다. BDD 구성시에 depth와 fanout을 함께 고려한 배열 순서를 사용하여 대상 함수에 대한 BDD의 크기를 줄이고 매핑되는 논리 모듈을 줄이며, 매핑된 논리 모듈들중 하나의 논리 모듈로 구현가능한 논리 모듈들을 병합시켜 최종 매핑된 논리 모듈의 수를 줄인다.

갑상선을 침범한 기관암 환자 1례

임강현(Kang Hyeon Lim),정용준(Yong Jun Jeong),한문수(Mun Soo Han),이주한(Ju Han Lee),김영식(Young Sik Kim),오경호(Kyung Ho Oh),권순영(Soon Young Kwon) 대한두경부종양학회 2018 대한두경부 종양학회지 Vol.34 No.2

Malignant lesion of the trachea predominantly results from direct spread of adjacent tumors, whereas primary tracheal malignancies are rarely observed. Tracheal tumors are usually diagnosed late on account of delayed specific symptoms: dyspnea, stridor, coughing and hemoptysis. Primary tracheal tumors, although very rare, may extend into the thyroid gland and present as a thyroid mass. Surgery, followed by adjuvant radiotherapy, is the treatment of choice. A case of primary tracheal cancer with thyroid invasion is reported, and a review of the literature is presented.

일부 농촌지역 재가 와병노인의 질환 및 개호의 특성

김진호(Jin-Ho Kim),정용준(Yong- Jun Jeong),조영채(Young-Chae Cho) 한국농촌의학 지역보건학회 2003 농촌의학·지역보건 Vol.28 No.2

민간영리 스포츠 시설로서의 수영장의 라이프 사이클과 경영전략에 관한 연구

윤영복(Yoon Yeong bok),박준희(Park Jun hee),정용준(Jeong Young jun) 조선대학교 교과교육연구소 1998 교과교육연구 Vol.19 No.1

We made a research on the sports facility managers who manage the commerical swinning center in seoul, Kwang Ju, Pusan and Taegu, The results are as follows: (1) The competitive strategy of swimming center consists of inner-differentiation strategy, outer-differentiation strategy and low cost strategy. (2) Inner-differentiation strategy is emphasized by the swimming center which sets the goal for growth maintenance. (3) Competitive stratgy of swimming center is determined by each stage in the life cycle theory ① Introduction stage : The emphasis of strategy is laid on inner-differentiation strategy. ② Growth stage : The emphasis of strategy is laid on both inner-differentiation strategy and outer-differentiation strategy ③ Decline stage : The emphasis of strategy is laid on outer-differentiation strategy with the aim to maintain.

순응형 파지와 정밀한 집기가 가능한 유연한 그리퍼의 강도 및 강성 분석

이덕원(Deok Won Lee),전형석(Hyeong Seok Jeon),정용준(Young Jun Jeong),김용재(Yong Jae Kim) 제어로봇시스템학회 2016 제어·로봇·시스템학회 논문지 Vol.22 No.10

In this paper, we introduce a flexible gripper that we have engineered to precisely pinch in parallel and compliantly grasp objects. As found in most conventional industrial grippers, the parallel pinching property is essential for precise manipulation. On the other hand, the grippers with a flexible structure are more adept at grasping objects with arbitrary shapes and softness. To achieve these disparate properties, we introduce a flexible gripper mechanism composed of multiple flexible beam structures. Utilizing these beam structures, the proposed gripper is able to grasp arbitrarily shaped objects. Additionally, a unique combination of flexible beams enables the gripper to pinch objects using the parallel fingertips for enhanced precision. A detailed description of the proposed mechanism is provided, and an analysis of the strength and stiffness of the fingertip and finger body is presented. The Results section compares the theoretical and experimental analyses and verifies the properties and performance of the proposed gripper.