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현명호,최희정,Bu Sung Kang,Guanghui Tan,Yoon Jae Cho 대한화학회 2006 Bulletin of the Korean Chemical Society Vol.27 No.11
A liquid chromatographic chiral stationary phase (CSP) based on (+)-(18-crown-6)-2,3,11,12-tetracarboxilic acid without extra free aminopropyl groups on silica surface has been demonstrated to be quite effective for the resolution of various b-amino acids. The retention factors (k1) for the resolution of b-amino acids on the CSP were quite large and the large retention factors might be quite attractive along with the reasonable separation factors (a) for preparative scale enantioselective chromatography. The large retention factors on the CSP were found to be reduced effectively by adding ammonium ion to mobile phase without sacrificing the chiral recognition efficiency of the CSP. Consequently, the CSP is also quite applicable for use in analytical enantioselective chromatography.
현명호,Chang Jin Boo,최희정,Yun Kyoung Kim,Bu Sung Kang,Hyun Ju Ha,Min Ki Choi,Guanghui Tan 대한화학회 2006 Bulletin of the Korean Chemical Society Vol.27 No.11
A new liquid chromatographic chiral stationary phase based on (2S,3S)-O,O'-bis-(10-undecenoyl)-N,N'-bis-(3,5-dinitrobenzoyl)-2,3-diamino-1,4-butandiol was prepared starting from (2R,3R)-1,4-bis(benzyloxy)-2,3-butanediol. The new chiral stationary phase was applied to the resolution of racemic anilide derivatives of N-acetyl-a-amino acids, 1,1'-bi-2-naphthol and 3,3'-diaryl-1,1'-bi-2-naphthols. The CSP was also applied to the resolution of some chiral drugs including a diuretic, bendroflumethiazide, and non-steroidal anti-inflammatory agents such naproxen and alminoprofen. In every case, the chiral recognition efficiency of the new CSP was quite excellent.
1920~1930년대 명승의 유형별・지방별 분포 연구 -종합잡지 역사지리 기사에 나타난 명승의 양적 분석을 중심으로-
현명호 고려사학회 2023 한국사학보 Vol.- No.92
This research produces and analyzes 3,308 selected scenic spots extracted from modern magazine articles, classifying them by region and type, and compared the results with previous studies to examine the historical meanings of the scenic spots mentioned in the magazines of the 1920s and 1930s during the Japanese colonialism’s cultural policy. The findings are as follows: Firstly, Buddhist-related relics were well-known and frequently appeared in historical documents even during the Joseon era, but their quantity surpassed other types during the Japanese colonial period. This is related to Japan's attempt to presenting a same origin of the Buddhist culture of Korea and Japan to support their colonial assimilation policy. Secondly, the distribution of scenic spots was concentrated in Gyeonggi Province during both the Joseon era and the Japanese colonial period, with Gyeongseong (modern-day Seoul) emerging as the place with the most scenic spots after modernization. This is related to the Japanese colonial government's efforts to transform Gyeongseong into an exhibition space to showcase the achievements of their modernization policy.
현명호,Hwan Sun Cho,,Hee Jung Choi,진종성 대한화학회 2008 Bulletin of the Korean Chemical Society Vol.29 No.11
A new HPLC chiral stationary phase (CSP) was prepared by bonding N-(3,5-dinitrobenzoyl)cefaclor to silica gel. The effective π-π donor-acceptor interaction between the CSP and analytes was demonstrated to be important for the chiral recognition by applying the new CSP to the resolution of N-(substituted benzoyl)leucine ethyl esters and N-(substituted benzoyl)leucine propyl amides. The new CSP was also successfully applied to the resolution of anilide derivatives of N-acetyl-α-amino acids, anilide derivatives of Oethoxycarbonyl- 2-hydroxycarboxylic acids and 3-substituted 1,4-benzodiazepin-2-ones.