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수장 족저부에 시간 경과에 따라 다발성으로 발생한 편평 세포암
이상훈 ( Sang Hun Lee ),신종훈 ( Jong Hun Shin ),이호균 ( Ho Gyun Lee ),김종민 ( Jong Min Kim ) 대한피부과학회 1998 대한피부과학회지 Vol.36 No.5
Squamous cell carcinoma of the skin arises mostly in the head and neck regions, less frequently in the rest of the body, and rarely in the palms and soles. We report a case of a 6S-year-old man who had had time-sequential development of multiple squamous cell carcinomas on his palms and soles for the past 12 years. These lesions were, in order of time, ulcerative nodules, ulcerative hyperkeratotic papules, hyperkeratotic plaques, maceratied plaques, dark discolored patchs, and hyperkeratotic papules. They were treated by total excision and cryotherpy apart from the last squatnous cell carcinoma in 1994. (Korean J Dermatol 1998;36(5): 897-900)
Cinnamic Aldehyde에 의한 색소성 접촉피부염의
이상훈 ( Sang Hun Lee ),백용관 ( Yong Gwan Baik ),신자경 ( Ja Gyeong Shin ),이호균 ( Ho Gyun Lee ),김종민 ( Jong Min Kim ) 대한피부과학회 1996 대한피부과학회지 Vol.34 No.3
Pigmented contact dermatitis denotes a kind of secondary hyperpigmentation resulting from recurrent contact dermatitis of low degree. Cinnamic aldehyde is a component of cinnamon,which is widely used in foods and fragrances. A 21 year-old girl presented with a well-defined dark brownish patch on right side of chest for 4 years. Histopathologic examination revealed epidermal spongiosis, hypermelanosis of basal layer, scattered melanophages and mild perivascular inflammatory cell infiltration in the upper dermis. Patch test findings were positive to fragrance mix, cinnamic aldehyde and body shampoo which was used by the patient. Peroral challenge with cinnamon tea resulted in flare-up of the positive patch-test sites and the skin lesion. (Kor J Dermatol 1996;34(3): 468-471)
김종민(Jong Min Kim),이재박(Jae park Lee),유병훈(Byeong hun Yu),금성민(Sung Min Kum),이창언(Chang Eon Lee),이승로(Seungro Lee) 대한기계학회 2011 大韓機械學會論文集B Vol.35 No.9
본 연구는 비예혼합화염보다 화염길이가 짧고 당량비 조절을 통해 NOx 및 CO 배출량을 제어할 수 있는 예혼합방식의 버너를 설치하고, 버너와 열 교환기 사이의 거리가 각각 30, 40, 50㎜인 3종의 열교환기에 대해 당량비를 변화시킬 때 NOx 및 CO의 배출특성을 비교하고 열교환기의 열전달특성을 검토한 것이다. 실험결과 버너와 열교환기의 거리변화와 관계없이 당량비가 증가할수록 화염온도가 높아져 NOx 및 CO 배출량도 증가한다. 또한 CO 배출량은 버너와 열교환기 사이의 거리가 가까울수록 높게 나타난다. 본 실험범위에서 A type 열교환기(버너와 열교환기 사이 거리 30 ㎝)를 당량비 0.75(CO 94.5ppm, NOx 11.2ppm, 효율 84.1%)에서 운전하는 것이 최적조건으로 나타났다. In this study, the heat transfer characteristics and NOx and CO emissions of a heat exchanger were investigated using a premixed burner. The experiments involved changing the distance between the burner and heat exchanger to 30, 40, and 50 ㎜ with various equivalence ratios. The results showed that the NOx and CO emissions increased as the equivalence ratio was increased because the flame temperature increased, regardless of the distance between the burner and heat exchanger. In particular, the CO emission increased significantly as the distance between the burner and heat exchanger was decreased. The optimal equivalence ratio for the A-type heat exchanger (distance between the burner and heat exchanger: 30 ㎝) was 0.7 in the experimental range. In this case, the CO and NOx emissions were 94.5 ppm and 11.2 ppm, respectively, and the efficiency was 84.1%.
조성수(Sung Su Cho),이성규(Sung Kyu Lee),강경훈(Kyong Hun Kang),서민혜(Min Hye Seo),김종민(Jong Min Kim),전희승(Hee seung Chun),송진호(Jin Ho Song) 한국에너지기후변화학회 2007 에너지기후변화학회지 Vol.2 No.1
Preparation of natural zeolite catalyst for removing of N₂O (greenhouse gas) is conducted by acid treatment and conventional wet ion exchange, zeolite catalyst is increased in surface area 45 ㎡/g to 176 ㎡/g. Catalyst (Pd-Fe-MOR) is carried out at a N₂O stationary source which is emitting -about 2,000 ppm at after SCR process. In the following experimental conditions (SV=5,000 h?¹, reductant feed ratio=1), catalytic reduction using CH₄ of N₂O over Pd-Fe-MOR catalyst was observed above 90% conversion at 350℃. And the temperature at which > 90% N₂O conversion using NH₃ is obtained at 480℃ at the same conditions.
이상훈,이호균,김종민 ( Sang Hun Lee,Ho Gyun Lee,Jong Min Kim ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.4
Background: Cosmetic and functional sequelae of thermal injuries are receiving increased attention as more patients survive severe burns and develop wound problems. A major problem in patients surviving thermal injury is the development of hypertrophic burn scars. Objective : The current study was performed to determine the factors associated with an in creased risk of the development of postburn hypertrophic scar/keloid and therapeutic indications Methods : The study population consisted of 103 cases with postburn wounds. The patient age, sex, previous hypertrophic scar/keloid history, family history, skin phototype, location, extent, depth, healing time of the burn wounds were recorded by records reviews interviews, and physical examinations and the relationship to the development of hypertrophic scar/keloid was analyzed. Results : 374(65%) of the 577 burn sites developed hypertrophic scar/keloid, which was unrelated to age, sex, and shin phototype, but was related to burn depth involvement as well as to the healing time of the burn wounds. Grafted wounds had lower incidences of postburn hypertrophic scar/keloid than non-grafted burn wounds. Conclusion : The prophylactic therapy to hypertrophic burn scars is recommended in patients with deep burn wounds and/or with long healing time. (Kor J Dermatol 1997;35(4): 638-644)
박성주,이상훈,이호균,김종민 ( Sung Ju Park,Sang Hun Lee,Ho Gyun Lee,Jong Min Kim ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.5
The occurrence of a new skin disorder at t.he site of another unrelated and already healed skin disease is called an isotopic response. This was defined by Wolf et al in 1995. The preceding diseases are mostly herpes zosters and various other diseases, such as carcinoma, granuloma annulare can follow. There has been only one report of an acneiform eruption occurring on the healed site of herpes zoster. We report, herein, a case of acneiform eruption that had developed on a site previously affecled by herpes zoster, which is thought to be an isotopic response. (Korean J Dermatol 1997;35(5): 994-99B)