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Sang-Hyeup Lee,이병세 대한화학회 2009 Bulletin of the Korean Chemical Society Vol.30 No.3
The ytterbium catalyst immobilized on the cross-linked poly(4-vinylpyridine/styrene) copolymer (P/S-Yb) was applied in the Mannich-type, three component one-pot synthesis of β-aminoketones. This catalytic system showed excellent catalytic activity and selectivity which resulted in the exclusive formation of β-aminoketone. The applicability of this immobilized catalyst system was shown by the reusability test and again highlighted by the synthesis of a β-aminoketone library using a broad range of substrates.
이상협 ( Sang Hyeup Lee ),( Balaji L. Korbad ) 대구가톨릭대학교 자연과학연구소 2012 자연과학연구논문집 Vol.10 No.1
Natural quorum sensing molecules and related structural analogues is of significant biological interest in the development of methods to manipulatebacterial quorum sensing systems in a useful manner. therefore, here we report synthesis of N-sulphonated and acylated homoserine lactone derivatives. Many of these molecules are synthesized based around the structures of known, native bacterial auto-inducers. And these molecules will be tested for quorum sensing activity.
Lee, Sang-Hyeup,Lee, Byoung-Se Korean Chemical Society 2009 Bulletin of the Korean Chemical Society Vol.30 No.3
The ytterbium catalyst immobilized on the cross-linked poly(4-vinylpyridine/styrene) copolymer (P/S-Yb) was applied in the Mannich-type, three component one-pot synthesis of $\beta$-aminoketones. This catalytic system showed excellent catalytic activity and selectivity which resulted in the exclusive formation of $\beta$-aminoketone. The applicability of this immobilized catalyst system was shown by the reusability test and again highlighted by the synthesis of a $\beta$-aminoketone library using a broad range of substrates.
Angiogram 을 이용한 혈류속도 획득 프로그램 개발
문세협(Se Hyeup Moon),서상호(Sang Ho Suh),노형운(Hyung Woon Roh),송지운(Ji Woon Song) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
The objective of this study is the development of an automated algorithm in order to obtain the hemodynamic information for diagnosing cardiovascular diseases. The DICOM(Digital Imaging and Communications in medicine) images are obtained by using arterial angiogram. Then the program for measuring the blood flow is developed. The program is based on the vessel domain profile and it reveal blood velocities automatically. With the obtained velocity filed, it is possible to predict the locations of the recirculation region and abnormal shear stress distributions.
이상협 ( Sang Hyeup Lee ) 대구가톨릭대학교 자연과학연구소 2009 자연과학연구논문집 Vol.7 No.1
The condensation of aliphatic and aromatic aldehydes with malonic acid in the presence of ammonium formate as nitrogen source resulted racemic b-amino acids in good yields.
이주협(Joo Hyeup Lee),홍창권(Chang Kwun Hong),노병인(Byung In Ro),장진요(Chin Yo Chang) 대한피부과학회 1990 대한피부과학회지 Vol.28 No.3
Generalized essential telangiectasia is defined as condition in which the veins and cspillaries of the skin undergo primary dilation independently of preceding or coexisting skin lesions of other types. We report herein a case of generalized essential telangiectasia in a 27-year-old female, who has been suffered from generalized erythematous to reddish linear, mottled, or net like telangiectatic macules except face, hands and feet. There were no abnormal laboratory findings and no evidence of systemic disease. Histopathologic examinations showed only dilated telangiectatic vessels in the upper dermis. (Kor J Dermatol 28(3): 385 389, 1990)