Abstract:
PURPOSE: An ink and signature discriminating method using spectroscopy is provided to analyze the spectrum of a signature and an ink pad using the high performance resolution of Micro ATR-FTIR spectral equipment. CONSTITUTION: The location of the imprint of a seal is determined in an identify object sample(S105). An Micro ATR-FTIR(attenuated total reflectance Fourier transform infrared spectroscopy) about the background of the imprint of the seal is measured(S110). The Micro ATR-FTIR spectrum about a part of the imprint of the seal is measured(S120). A sample spectrum is obtained by eliminating the spectrum of the background from the spectrum of the part of the imprint of the seal(S130). A feature of the sample spectrum which is used as the search key of a database or library is selected(S140). An ink pad sample spectrum having equality more than a designated value is searched(S150). A searched result is outputted(S160).
Abstract:
본 발명은 분광분석법의 응용에 관한 것으로, 더욱 상세하게는 분광법을 이용한 볼펜 서명 감식 방법에 관한 것이다. 본 발명의 일 실시예에 따른 볼펜 서명 감식 방법은, 볼펜 서명(署名)의 배경에 대하여 분광 스펙트럼을 측정하는 단계와, 볼펜 서명 부분에 대하여 분광 스펙트럼을 측정하는 단계와, 볼펜 서명 부분의 분광 스펙트럼으로부터 배경의 분광 스펙트럼을 제거하여 볼펜 잉크의 분광 스펙트럼을 구하는 단계와, 볼펜 잉크의 분광 스펙트럼에서 검색 키로 사용할 특징을 선택하는 단계와, 볼펜 잉크 샘플 스펙트럼 데이터베이스에서 검색 키에 대하여 미리 정해진 값 이상의 동등성 조건을 만족하는 볼펜 잉크 샘플 스펙트럼을 검색하는 단계 및 검색된 결과에 기초하여 동등성 조건을 만족하는 볼펜 잉크 샘플의 발견 여부 및 발견된 볼펜 잉크 샘플의 출처 정보를 출력하는 단계를 포함한다.
Abstract:
PURPOSE: Provided is an effective resolution method of chiral compounds containing hydroxy group or ester group, by using lipase produced by Burkholderia Cocovenenans SY-01I(KFCC 11111). CONSTITUTION: Chiral compounds(formula 1, 2, 3 4 and 5) containing hydroxy group or ester group are resolved by hydrolyzing and trans-esterifying using the solid lipase prepared by dialysis or lyophilizing, wherein the hydrolysis is carried out at 5-35deg.C with by phosphate buffer solution of pH7.09; and the trans-esterification is conducted at 0-55 deg.C with organic solvent and an acylating agent. The organic solvent is selected from n-hexane, ethylacetate, benzene, toluene, THF, diethylether, acetonitrile, dichloroethane, dichloromethane, 1,4-dioxane, methanol, DMSO, DMF and hexane/ethylacetate(9/1 -5/5) and the above acylating agent is chosen from vinylacetate, isopropenylacetate, anhydrous acetic acid, anhydrous propionic acid and anhydrous butyric acid.
Abstract:
PURPOSE: A solvent is provided to efficiently concentrate the volatile organic compound at a moderate cost without using a liquid nitrogen. CONSTITUTION: A producing method of solvent compounded by crab shell powder of 60-80 mesh fineness for the volatile organic compound concentration comprises the steps of: removing all contents of a crab completely; washing; drying at 100-120°C; and milling to be 60-80 mesh fineness.