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미결정유의성 단일클론성 감마글로불린혈증(MGUS)이 동반된 미만성 정상지질단백혈증성 편평 황색종 1예
박준하,황규철,박재홍,손상욱,계영철,김수남 대한피부과학회 2003 대한피부과학회지 Vol.41 No.10
Diffuse plane xanthoma is a group of plane xanthomas that appear as yellow-brown flat patches or slightly elevated plaques with a wide-spread distribution. Cutaneous xanthomas may occur either hyperlipoproteinemic or normolipoproteinemic states. Diffuse plane xanthoma with normolipoproteinemia is often associated with multiple myeloma, other reticulo-endothelial malignancies and monoclonal gammopathy of unknown significance(MGUS). We report a case of diffuse plane xanthoma associated with monoclonal gammopathy of unknown significance(MGUS) and normolipoproteinermia.(Korean J Dermatol 2003;41(10) : 1411~1413)
후두내시경 영상에서의 라디오믹스에 의한 병변 분류 연구
박준하,김영재,우주현,김광기,Park, Jun Ha,Kim, Young Jae,Woo, Joo Hyun,Kim, Kwang Gi 대한의용생체공학회 2022 의공학회지 Vol.43 No.5
Laryngeal disease harms quality of life, and laryngoscopy is critical in identifying causative lesions. This study extracts and analyzes using radiomics quantitative features from the lesion in laryngoscopy images and will fit and validate a classifier for finding meaningful features. Searching the region of interest for lesions not classified by the YOLOv5 model, features are extracted with radionics. Selected the extracted features are through a combination of three feature selectors, and three estimator models. Through the selected features, trained and verified two classification models, Random Forest and Gradient Boosting, and found meaningful features. The combination of SFS, LASSO, and RF shows the highest performance with an accuracy of 0.90 and AUROC 0.96. Model using features to select by SFM, or RIDGE was low lower performance than other things. Classification of larynx lesions through radiomics looks effective. But it should use various feature selection methods and minimize data loss as losing color data.
Siloxane - Modified Epoxy Resin 의 특성 : 2 . DGEBA / Siloxane 을 기초로 한 Prepolymer 경화사편의 강인성
박준하,이무재,임정수,김공수 ( Jun Ha Park,Moo Jae Lee,Jeoung Su Lim,Kong Soo Kim ) 한국공업화학회 1997 응용화학 Vol.1 No.1
Siloxane prepolymer were synthesized by epoxy terminated siloxane oligomer onto diamino diphenylmethane(DDM) and bisphenol A(BPA) of melting state. The cured specimen of based siloxane prepolymer were prepared by mixing diglycidyl ether bisphenol A(DGEBA) with 5∼20phr of siloxane prepolymer at reaction temp. 150℃. In DGEBA/polysiloxane system, cured specimen are investigated on mechanical and thermal properties. As a result on mechanical properties, flexural and impact strength were increased that siloxane prepolymer blend ratio increased, on the other hand Tg, thermal expansion coeffi. (α) and modulus were decreased. The morphology of DGEBA/DDM were showed directly cross-section of fraxture energy flow and DGEBA/SiO system were investigated heterogeneously domain forms.