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지속성 외래 복막투석 환자에서 발생한 당뇨병성 근육 경색증
정택균 ( Taek Kyun Jeong ),이연경 ( Youn Kyoung Lee ),정균호 ( Gyun Ho Jeong ),박병석 ( Byong Seok Park ),마성권 ( Seong Kwon Ma ),김수완 ( Soo Wan Kim ),김남호 ( Nam Ho Kim ),최기철 ( Ki Chul Choi ) 대한신장학회 2003 Kidney Research and Clinical Practice Vol.22 No.1
Diabetic muscle infarction (DMI) is a rare condition occurring in subjects with long-standing complicated diabetes mellitus. We report DMI in a 65-vear-old man with type 2 diabetes mellitus undergoing continous ambulatory peritoneal dialysis (CAPD) with review of this condition in the literature. He had been suffered from type 2 diabetes mellitus for 21 years. In 1997, he reached end-stage renal disease and had received on renal replacement therapy with CAPD since then. In June 2002, he presented with sudden and spontaneous onset of severe pain in the right thigh region. He was afebrile, and the right thigh was swollen and tender but not erythematous. Laboratory data on admission included white blood cell count of 15,800/㎣, hemoglobin 9.0g/dL, platelet count 264,000/㎣, BUN 102.3mg/dL, serum creatinine 9.9 mg/dL, fasting blood glucose 85 mg/dL, postprandial 2 hours blood glucose 162 mg/dL, hemoglobin AIC 5.84%, ESR 125 mm/h (it was 52 mm/h one month earilier), CRP 18.9 mg/dL, and normal levels of creatinine kinase. Magnetic resonance imaging (MRI) showed asymmetry of the muscle in T1-weighted images and increased signal intensity involving the medial portion of right thigh (adductor longus, adductor magnus, vastus intermedius muscle, etc) in T2-weighted images with no contrast enhancement. Radioistope venography of the ileo-femoral veins was was normal, excluding deep venous thrombosis as a cause. The right thigh was explored surgically and a biopsy taken from the vastus intermedius muscle was consistent with chronically inflammed scar tissue with no evidence of malignancy. A biopsy taken from the vastus intermedius muscle showed hemorrhagic necrosis of skeletal muscle, with lymphcytic infiltration. Most of the blood vessels appeared normal. The swelling resolved spontaneously following a few weeks of bedrest and analgesia. To our knowledge, this is the first reported case of DMI in patients undergoing renal replacement therapy in Korea.
Sunitinib에 의해 발생한 수족증후군과 수포성 고정약진 1예
정택조 ( Taek Jo Jeong ),이은주 ( Eun Ju Lee ),정기헌 ( Ki Heon Jeong ),신민경 ( Min Kyung Shin ),김낙인 ( Nack In Kim ) 대한피부과학회 2009 대한피부과학회지 Vol.47 No.6
Sunitinib is multitargeted tyrosine kinase inhibitor, and this drug was approved for use to treat gastrointestinal stromal tumor and advanced renal cell carcinoma. It has also been shown to be efficacious in treating neuroendocrine, colon and breast cancer. Sunitinib therapy is often complicated by cutaneous adverse effects such as hand-foot syndrome, hair depigmentation, subungal splinter hemorrhage, xerosis, alopecia and seborrheic dermatitis-like reactions. But there have been no reports on patients presenting with a bullous fixed drug eruption associated with sunitinib administration. We report here on a case of a bullous fixed drug eruption and hand-foot syndrome, and these maladies were caused by this agent. (Korean J Dermatol 2009;47(6):739∼742)
정택상(Taek Sang Jeong),신원섭(Won Sop Shin),연평식(Poung Sik Yeoun),이정희(Jeong Hee Lee),이지현(Ji Hyun Lee) 한국산림휴양학회 2010 한국산림휴양학회지 Vol.14 No.3
본 연구는 학교숲과 초등학교 학생의 특성에 관한 연구를 수행하였다. 연구의 목적은 학생들의 특성에 따른 기질의 차이와 학교숲 특성에 따른 기질에 따른 차이를 파악하고자 수행되었다. 자료수집은 충청북도 내 16개 초등학교에서 443명의 초등학생을 대상으로 수집하였으며 연구결과는 다음과 같다. 1. 학생들의 기질은 6개 요인으로 구성되었으며 다음과 같다. 일반적 활동성 요인(7개 항목), 접근-철회성 요인(6개 항목), 융통-경직성 요인(6개 항목), 기분 요인(7개 항목), 주의 집중성 요인(5개 항목), 지속성 요인(3개 항목). 2. 학생들의 기질은 학생들의 특성 중 성별, 지역별, 학교숲 조성 참여경험에 따라 차이가 나타났다. 3. 학생들의 기질은 학교숲의 특성 중 1인당 학교숲 면적에 따라 차이가 나타났다. This study investigates the effect of school forests on elementary students’s psychological temper. Specifically this study was conducted to investigate the relationship between some characteristics of school forests such as size, species and forest age, etc. and students’ temper. To collect data, 443 students from 16 elementary schools in Chungbuk Province were sampled as respondents. A set of questionnaires were administered each to respondent. The results of data analysis were followings: 1. There were significant differences in students' temper due to their gender, locations of the schools, and students’ use pattern of forests. 2. The characteristics of school forests influenced on different types of students’ temper.
웹 GUI 기반 스마트 팩토리 공정 관리 및 공유 시스템
이상정 ( Sang-jeong Lee ),홍석준 ( Seok-jun Hong ),정택성 ( Taek-sung Jung ),한건욱 ( Geon-uk Han ),이인혜 ( In-hye Lee ),정민교 ( Min-kyo Jeong ),민홍 ( Hong Min ) 한국정보처리학회 2019 한국정보처리학회 학술대회논문집 Vol.26 No.2
최근 사물인터넷 분야에서 스마트 팩토리 부분은 많은 주목을 받고 있으며 관련된 연구도 많이 진행되고 있다. 기존의 스마트 팩토리 플랫폼은 제품 생산 효율성을 높여 비용을 줄이는 것을 목표로 센서로부터의 데이터 수집과 클라우드로의 전송, 대규모 데이터 분석을 통한 의사결정 등 자동화 부분에 집중되어 있다. 본 논문에서는 웹 GUI를 활용하여 응용 개발의 편의성을 높여 개발자가 아닌 공정관리자가 직접 공정을 제어할 수 있도록 했으며 유사 환경이 구축된 다른 공장에서 기존에 만들어진 공정 프로그램을 공유하고 재수정할 수 있는 시스템을 설계하였다. 또한, 프로토타입을 구현하여 제안된 웹 GUI기반 스마트 팩토리 공정 관리 및 공유 시스템의 운용 가능성을 검증하였다.
Formula SAE 차량의 선회 성능 향상을 위한 스프링 및 댐핑 강성 최적 조합에 관한 연구
정택용(Taek Yong Jeong),이준영(Jun Young Lee),임홍재(Hong Jae Yim) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11
In this paper, a methodology for optimal combination of spring and damper characteristics to improve the cornering performance of a SAE vehicle are studied. First, F-SAE full vehicle model is developed for multi-body dynamic analysis. Then a virtual skid pad course simulation is executed to evaluate the vehicle cornering performance. Design variables are coefficients of damper and spring stiffness in the suspension of the F-SAE vehicle. A parameter study with various combinations of spring and damper stiffness is executed with the skid pad driving simulation. Optimal combination model is found and compared with the F-SAE vehicle base model to show improved cornering performance and lap time.
결절성 병변과 반피부위축증양 병변을 함께 보인 융기피부섬유육종
정택조 ( Taek Jo Jeong ),신민경 ( Min Kyung Shin ),이무형 ( Mu Hyoung Lee ) 대한피부과학회 2009 대한피부과학회지 Vol.47 No.3
Atrophic dermatofibrosarcoma protuberans (DFSP) is an uncommon clinical variant, which clinically mimics other atrophic dermatological conditions. Given the typical `protuberant` morphology of DFSP, such atrophic lesions may be difficult to diagnose clinically. We report a 44-year-old man who presented with an 8-month history of an asymptomatic, depressed, anetoderma-like plaque on the right subclavicular area. He also presented with a 1-year history of a 1.5×1.5 cm, asymptomatic, firm, erythematous nodule above an atrophic lesion. Biopsy specimens were taken from each lesion. These specimens, along with histochemical staining for CD34, established the diagnosis of dermatofibrosarcoma protuberans. (Korean J Dermatol 2009;47(3):361∼364)