필러로 호전을 보인 전신성 경피증에 의한 소하악증 및 소순증

정세영 ( Se Yeong Jeong ),서수홍 ( Soo Hong Seo ),손상욱 ( Sang Wook Son ),김일환 ( Il Hwan Kim ) 대한피부과학회 2007 大韓皮膚科學會誌 Vol.45 No.6

Systemic sclerosis is an autoimmune rheumatic disease of unknown etiology, often manifested with excessive, fibrosis of the skin. The viscous properties of the skin are impaired, and the main histologic changes include a thicker dermis, absence of pilosebaceous units, and a decreased space between collagen bundles. We present a case of 20-year- old Korean woman with micrognathia and microchilia due to systemic sclerosis who came for improvement of her doll-like appearance. We saw an improvement in her micrognathia and microchilia by using Restylane(R) and Perlane(R). (Korean J Dermatol 2007;45(6):632∼634)

강원도 삼척 지역에서 소나무 이차림의 대상 벌채에 따른 초기 식생 재생 반응

정세영 ( Se Yeong Jeong ),조용찬 ( Yong Chan Cho ),변봉규 ( Bong Kyu Byun ),김혜진 ( Hye Jin Kim ),배관호 ( Kwan Ho Bae ),김현섭 ( Hyun Seop Kim ),김준수 ( Jun Soo Kim ) 한국환경생태학회 2015 한국환경생태학회지 Vol.29 No.5

대면적 개벌의 대안으로서, 대상 개벌은 생산림지의 생태 조건 보전과 임분 재생을 모두 고려하는 작업법이다. 그러나 우리나라에서는 대상 벌채 기법의 적용 및 효율성에 대한 연구를 찾아보기 어렵다. 본 연구는 강원도 삼척에서 2012년부터 2014년까지 소나무림 대상 벌채 (10m, 20m 및 40m) 처리 전.후의 하층식생 반응 및 소나무 재생과 임분환경 변화와의 상관성을 방형구법을 적용하여 조사 및 분석하였다. 하층식생 피도 및 종다양성은 대상 벌채 넓이에 상관없이 교목 종 및 광선호 종의 확장에 의해 증가하는 경향이었고, 신갈나무, 맑은대쑥 및 산딸기 등의 벌채 후잔존 교목 및 광선호 종들의 활발한 증가가 관찰되었다. 대상 벌채 구역의 소나무 정착은 수관층 환경 (광량 및 수관열림도) 및 토양나출도와는 정의 상관, 그리고 하층식생 및 임상 목질잔해물의 피도와는 음의 상관을 나타내었다. As an alternative to large-scale clear cutting silviculture, strip clear cutting (SC) is being considered as a system compatible with ecological conservation and forest regeneration. In South Korea, application and effectiveness of SCC in varying forest types were rarely found. In this study, under the subject of strip clear cutting lands of pinus densiflora forest at Samcheok, Gangwon-do Province, the developmental aspect of low vegetation prior to and after deforestation and the correlation between environmental factor and pine regeneration were analyzed. The cover rate of understory vegetation was appeared to be increased after deforestation and rapidly increased two years after deforestation, and it was evaluated to be affected by vigorous tree species and photophilic species. From the perspective of relative importance value, Quercus mongolica, Artemisia keiskeana, and Rubus crataegifolius that influence the cover rate showed the inclination of continuous growth. The diversity of species showed increment inclination as well due to introduction and settlement of early transient species. As a result of analyzing the correlation between vegetation and environmental factor and generation of pine tree size, the soil exposure rate, intensity of light, and canopy openness showed positive relationship, and the understory vegetation cover and woody debris cover rate showed negative relationship.

안검황색종의 치료에서 Bichloroacetic Acid를 이용한 국소 화학 소작술의 유용성과 안전성

정세영 ( Se Yeong Jeong ),신재빈 ( Jae Bin Shin ),서수홍 ( Soo Hong Seo ),손상욱 ( Sang Wook Son ),김일환 ( Il Hwan Kim ) 대한피부과학회 2007 대한피부과학회지 Vol.45 No.4

Background: Xanthelasma palpebrarum is the most common type of xanthoma. Due to its delicate location near the eye, treatment of xanthelasma palpebrarum is rather difficult. The treatment includes surgical excision, local treatment with chemicals, and various laser therapies. Objective: This study was designed to review the various therapeutic modalities and to evaluate the efficacy and safety of bichloroacetic acid (BCA) for the treatment of xanthelasma palpebrarum. Methods: Nine patients, with a total of 19 xanthelasma lesions, were treated with BCA. The efficacy and safety were assessed over a follow-up period of 6 to 24 months (average, 16 months). Results: All lesions were grossly removed completely with a single treatment and the treatment was well-tolerated by patients. Erythema and oozing were observed in six patients but improved after two weeks` dressing. Xanthelasma palpebrarum recurred in three patients, but the mean size of the recurred lesions was smaller in comparison to the primary lesion. Conclusion: BCA is an effective and safe therapeutic modality for xanthelasma palpebrarum. Advantages include simplicity, cost-effectiveness, speed, safety and efficacy. (Korean J Dermatol 2007;45(4):349~353)

선천성 이소성 발톱

정세영 ( Se Yeong Jeong ),김재환 ( Jae Hwan Kim ),서수홍 ( Soo Hong Seo ),손상욱 ( Sang Wook Son ),김일환 ( Il Hwan Kim ) 대한피부과학회 2008 대한피부과학회지 Vol.46 No.1

A congenital ectopic nail is a rare anomaly and usually manifests itself as a small abnormal nail appearing alongside the normal nail. In most of the cases, abnormal nails have been found on the palmar surface of the fifth finger. The pathogenesis of the ectopic nail remains unclear. It has been postulated to be a kind of polydactyly or generation from stray germ cell or inoculation of the nail matrix after trauma. We observed a case of a 5-month-old boy with congenital ectopic toenail on the right second toe. The ectopic toenail was removed by surgical excision and the histopathological finding was consistent with ectopic toenail. We report a case of congenital ectopic toenail on the right second toe of a 5-month-old boy. (Korean J Dermatol 2008;46(1):106∼108)

Collimated Low Fluence Q-switched Nd: YAG 레이저를 이용한 새로운 기미 치료법

정세영 ( Se Yeong Jeong ),장성은 ( Sung Eun Chang ),박하나 ( Ha Na Bak ),최지호 ( Jee Ho Choi ),김일환 ( Il Hwan Kim ) 대한피부과학회 2008 대한피부과학회지 Vol.46 No.9

Background: Laser treatment in melasma has previously failed because of the resulting inflammation and consequent pigmentation and excessive thermal damage caused by the use of high fluence. Objective: This study is aimed at establishing the concept of the collimated low fluence Q-switched Nd: YAG laser as a treatment for melasma by investigating its therapeutic effects clinically as well as histopathologically. Methods: 27 patients were treated weekly with Q-switched Nd: YAG laser (1,064 nm wavelength, 7 mm spot size, 1.6~2.5 J/cm2 fluence) for 8 weeks. The results were evaluated based on standardized clinical images that used Robo skin analyzer, spectrophotometer, MASI score and general severity. Results: 17 (58.8%) patients showed GOOD (50~75% improvement) and no case of full recurrence was examined and partial recurrence was detected in 12/17 patients. Common adverse effects include pain, erythema, and temporary edema. Rarely partial hypopigmented macules and diffuse hyperpigmentation appeared. Additional studies, such as immunohistochemical examination and electron microscopic examination, are also currently in progress. Conclusion: The collimated low fluence Q-switched Nd: YAG Laser is effective in melasma treatment. This treatment method is a new concept that can be described as selective photothermolysis with minimal thermal damage and inflammation reaction to affected tissues by pigmentation. We consider this treatment method should be regarded as Minimized Selective Photothermolysis (MSP) that will provide a new effective treatment for melasma. (Korean J Dermatol 2008;46(9):1163~1170)

조직확장술과 모즈 수술로 치료한 두피의 다발성 융기성 피부섬유육종

정세영 ( Se Yeong Jeong ),신재빈 ( Jae Bin Shin ),서수홍 ( Soo Hong Seo ),손상욱 ( Sang Wook Son ),김일환 ( Il Hwan Kim ) 대한피부과학회 2007 대한피부과학회지 Vol.45 No.12

Dermatofibrosarcoma protuberance is a relatively rare malignant soft tissue tumor which is locally invasive and looks like a protruded hardened plaque composed of multiple nodules. It seldom occurs on the scalp and the occurrence rate is less than 5%. Nowadays there is a tendency to choose Mohs surgery as a primary treatment instead of a wide excision, because Mohs surgery can reduce cases of recurrence. We report a case of multiple dermatofibrosarcoma protuberans on the scalp of a 32-year-old man. We planned a delayed operation using tissue expanders. We inserted two skin expanders and successfully expanded scalp tissue more than 150% after 7 months. Mohs surgery was performed with a 4 cm distance from borderline of lesions and then the large scalp skin defect was covered by the expanded skin which had been prepared by tissue expanders. It has been 9 months since the operation was performed and there have been no signs of recurrence. (Korean J Dermatol 2007;45(12):1270∼1274)

Independent jaw를 이용한 비대칭조사면의 선량분포에 관한 연구

김건오,정세영,김영범,권영호,Kim Geon O,Jeong Se Yeong,Kim Yeong Beom,Gwon Yeong Ho 대한방사선치료학회 2002 大韓放射線治療技術學會誌 Vol.14 No.1

The mordem linear accelerators are equipped with X-ray collimators that can be moved independently to allow asymmetric fields with field centers positioned away from the true central axis of the beam. We have studied the dosimetric of an independent collimator system using measurements performed quarter fields. The field size factors for asymmetric fields are compared to those for symmetric fields. Dosimetric measurements include portent depth don, beam penumbra and shape of isodose curves for symmetric and quarter fields.

토지이용별에 따른 초기강우 유출량의 비점오염물 특성 분석

최윤영 ( Yun Yeong Choi ),정세영 ( Se Young Jung ),최정우 ( Jeong Woo Choi ) 한국환경과학회 2011 한국환경과학회지 Vol.20 No.3

This study was conducted to investigate runoff characteristics of non-point pollutants source at the urban and rural zones in sangju area. The monitoring was conducted with seven events for ten months and Event mean Concentration(EMC) and First Flush Effect(FFE) of SS and BOD were calculated on the result of the water quality parameters. During rainfall event, the peak concentrations of SS and BOD were observed after 3∼4 hours of rainfall in rural areas. Whereas, the peak concentrations occurred within 1∼2 hours after rainfall and then the highest concentration of NPS pollutants sharply decreased, showing strong first flush effect in urban areas. The cumulative load curves for NPS pollutants showed above the 45° straight line, indicating that fist flush effect occurred in urban areas. The mean SS EMC values of rural areas ranged from 0.9∼3.3mg/L, it was higher value when compare to urban areas. While the mean BOD values of urban areas were shown the highest values.

파운틴 코드의 개요

박도형,김민규,정세영,Park, Do-Hyeong,Kim, Min-Gyu,Jeong, Se-Yeong 한국통신학회 2007 정보와 통신 Vol.24 No.4

최근 들어 다중 사용자 환경에서 효율적인 정보 전송에 관한 연구가 진행되면서 새로운 방식의 채널 부호화 기술들이 탄생하였다. 파운틴 코드는 Erasure 채널로 표현되는 네트워크 상에서 다수에게 전송하는 브로드캐스팅 및 멀티캐스팅에 적합하도록 개발된 채널 부호화 기술로서, 정보를 무한히 많은 양으로 부호화하여 전송하는 것을 특징으로 한다. 이와 같은 방식의 채널 부호화 기술은 최근 몇 년간 이론적인 측면뿐만 아니라 실제 표준화 측면에서도 활발하게 연구되고 있다. 본 논문에서는 파운틴 코드에 대하여 소개하고 실제 개발된 몇 가지 파운틴 코드를 소개한다. 그리고 파운틴 코드의 향후 응용 가능성에 대해서도 논의한다.

음압요법을 이용한 욕창궤양의 치료

김재환 ( Jae Hwan Kim ),정세영 ( Se Yeong Jeong ),서수홍 ( Soo Hong Seo ),손상욱 ( Sang Wook Son ),김일환 ( Il Hwan Kim ) 대한피부과학회 2008 대한피부과학회지 Vol.46 No.5

Decubitus ulcer is a pressure-induced ischemia-reperfusion injury overlying a bony prominence. Various dressing methods have been developed to treat it, but clinical management is still a challenging practice. A patient presented with stage IV decubitus ulcer on the left lateral side of the buttock, which was caused by compulsively lying down on the left side due to schizophrenia. The ulcer was resistant to occlusive dressing method for five weeks. However, the patient successfully recovered in three weeks by our applying a negative pressure dressing with the portable vacuum-assisted closure (VAC) system. Our experience shows negative pressure dressing can be effectively used to treat intractable decubitus ulcer in outpatient settings. (Korean J Dermatol 2008;46(5):682∼685)