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전재홍,이창우 ( Jae Hong Jun,Chang Woo Lee ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.6
We describe three cases of morphea which present lesions of the disease at the site of mechanical traumas. In these patients, local traumatization of cutaneous tissue appear to be the initiating event for the developrnent of new lesions (isomorphic phenomenon) associated with their possible morphea prone constitutions. The mechanism involving these local stimuli responsible for the excessive collagen production is lifficult to explain. Upon biologic stress or trauma, normal cutaneous physiology may cause loca production and release of inflammatory mediators/cytokines, such as transforrning growth factor-gthe major connective tissue growth factor-inducer). Perhaps, possible dysregulation of collagen-growth or fibrosis- promoting cytokines causing some clonal overactivity of the fibroblast, or with other undefined mechanisms may cause excessive synthesis of collagen to the local effects of such triggering factors in susceptible/subclinical individuals. Although no definite environrriental/physical influences on t,he developrnent of morphea have been described, rnechanical trauma niay occasionally be regarded as a contributing factor as seen in these patients. (Korean J Derr!natol 1997;35(S): 1215-1219)
전신성 홍반성 루푸스 환자에서의 홍역상 홍반의 임상적 고찰
전재홍 ( Jae Hong Jun ),이창우 ( Chang Woo Lee ) 대한피부과학회 1998 대한피부과학회지 Vol.36 No.2
Background: In patients with systemic lupus erythematosus(SLE), LE-specific cutaneous lesions include malar rashes, widespread/morbilliform erythema, oral ulcer and bullous lesions. Objective : Clinical observations were carried out to define cutaneous features of morbilliform erythema and to see possible relevancy of this erythema to disease activity of SLE. Methods : Examinations were performed on 7 SLE patients with morbilliform erythema regarding the distribution and course of the cutaneous lesions; some SLE-activity related hematologic/immunologic data taken during/around the time of this skin disease were also assessed in each patient. Results : In most of those patients with morbilliform erythema, which covered the trunk and extremities, the skin lesions lasted for about 2 weeks until their disappearance. At or around the time of suffering from this skin disease of acute eutaneous LE, activities of systemic disease were recognized as in a state of flare-up or aggravation with hypocomplementemia and high titers of anti-nDNA autoantibodies. Conclusion : As with malar rashes, morbilliform erythema of acute cutaneous LE seems to develop more frequently at the time of severe systemic involvement of immunopathological processes of SLE. (Korean J Dermatol 1998;36(2): 236-240)
$SiO_{x}F_{y}$/a-Si 구조에 엑시머 레이저 조사에 의해 불소화된 다결정 실리콘 박막 트랜지스터의 전기적 특성과 신뢰도 향상
김천홍,전재홍,유준석,한민구,Kim, Cheon-Hong,Jeon, Jae-Hong,Yu, Jun-Seok,Han, Min-Gu 대한전기학회 1999 전기학회논문지C Vol.48 No.9
We report a new in-situ fluorine passivation method without in implantation by employing excimer laser annealing of $SiO_{x}F_{y}$/a-Si structure and its effects on p-channel poly-Si TFTs. The proposed method doesn't require any additional annealing step and is a low temperature process because fluorine passivation is simultaneous with excimer-laser-induced crystallization. A in-situ fluorine passivation by the proposed method was verified form XPS analysis and conductivity measurement. From experimental results, it has been shown that the proposed method is effective to improve the electrical characteristics, specially field-effect mobility, and the electrical stability of p-channel poly-Si TFTs. The improvement id due to fluorine passivation, which reduces the trap state density and forms the strong Si-F bonds in poly-Si channel and $SiO_2/poly-Si$ interface. From these results, the high performance poly-Si TFTs canbe obtained by employing the excimer-laser-induced fluorine passivation method.