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박미화 ( Mee Hwa Park ),곽문상 ( Moon Sang Kwak ),장찬영 ( Chan Young Jang ),이재수 ( Jae Soo Lee ),이용규 ( Yong Kyu Lee ),이금석 ( Keum Suk Lee ),홍영식 ( Young Sik Hong ),한보광 ( Bo Kwang Han ) 동국대학교 전자불전문화콘텐츠연구소 2009 전자불전 Vol.11 No.-
본 연구는 한글대장경 전산화 8차 사업으로 한글대장경 30책 분량을 전산화하여 검색 시스템을 구축하는데 목적이 있다. 고려대장경의 우리말 번역본인 한글 대장경을 전산화하기 위해 개역된 고문헌을 입력하여 데이터베이스로 구축하고, 인터넷을 통해 그 내용을 검색할 수 있도록 한다. 한글대장경 고문헌을 확장한자, 누락문자, 특수문자 등을 포함하고 있어서, 본 연구에서는 효과적인 입력과 저장을 위해 유니코드(Unicode)를 사용하며, 유니코드로 표현하지 못하는 문자들은 이미지 폰트를 생성하여 표현한다. 데이터베이스를 구축하기 위해서 DBMS로는 MS-SQL Server 7.0을 사용하고, 운영체제로는 윈도우 2000 서버를, 웹 서버로는 IIS(Internet Information Server)를 사용하여 검색 시스템을 구축하였다. 또한 다양한 검색 방법을 제공하는 검색 엔진을 개발하여, 유니코드로 저장된 한글대장경 고문헌의 내용을 웹(http://ebtc.dongguk.ac.kr/)을 통해 보다 쉽게 전세계에서 접근할 수 있도록 한다. 8차 사업에서는 자동화된 한글대장경 원문 검증 프로그램을 개발하고 웹 검색 인터페이스 기능 개선과 누락 문자 이미지 가 독성 개선을 통해 한글대장경 웹 서비스의 품질을 개선하였다. This research aims for constructing retrieval system by digitizing thirty books quantities of Hangul Tripitaka in the 8th Hangul Tripitaka Digitization Project. For digitizing Hangul Tripitaka which is a Korean version of the Tripitaka Korean, we can input, store the retranslated archaic documents in database, and search their contents through the Internet. Because the archaic documents of Hangul Tripitaka includes extension characters of Chinese origin, missing characters and special characters, we input and store documents use Unicode and make image fonts that cannot represented by Unicode. also, for developing retrieval system in this research. We use MS-SQL 7.0 and IIS(Internet Information Served on Windows 2000 Server. By developing search engine which provides variety of retrieval methods, people who concern the archaic documents in the whole world can access Hangul Tripitaka saved as unicode using the Web. In the 8th Hangul Tripitaka Digitization Project, we developed automated verifying system on raw file of the Hangul Tripitaka and improved the Web search system interface. also we reformed characters of Chinese origin, missing characters and special characters.
수도관 부식에 대한 잔류염소 농도 영향 및 부식제어 방안
한금석 ( Keum-seok Han ),박주현 ( Ju-hyun Park ),박영복 ( Young-bok Park ),김성재 ( Seong-jae Kim ),김현돈 ( Hyen-don Kim ),최영준 ( Young-june Choi ),최인철 ( In-cheol Choi ),홍성호 ( Seong-ho Hong ) 한국부식방식학회(구 한국부식학회) 2018 Corrosion Science and Technology Vol.17 No.1
Langelier Index (LI) is used as a tap water corrosiveness index. Residual chlorine in tap water induces corrosion inside water pipes. This study takes a deeper look into the effect of residual chlorine in water pipes. Comparison between tap waters of Y and K water treatment plant (WTP) shows that the LI index of K WTP is lower than that of Y. However, the corrosion rate of Y WTP is higher than that of K WTP. This means that the higher the concentration of residual chlorine in tap water, the higher the corrosion rate of pipe materials. When calcium hydroxide was added to tap water, the corrosiveness index was improved and thus the corrosion rate reduced. It is possible to increase the disinfection efficiency by increasing the duration of residual chlorine and suppressing the rust generation of water pipes and to supply minerals. A guideline for corrosion control with residual chlorine should be set up. The effects of residual chlorine should be included in the corrosiveness index of tap water.
수돗물 부식성 제어를 통한 수도관 부식방지기술: 석회수 분산화장치를 이용한 미네랄 공급 효과와 영향 분석
한금석,박영복,김성재,김현돈,최영준,박주현,우달식,홍성호 대한상하수도학회 2018 상하수도학회지 Vol.32 No.3
Corrosion inhibitors including calcium hydroxide have been used to prevent corrosion in the pipes for tap water supply. The corrosion index (i.e., Langelier Index) differs by area and water quality. The corrosion indices of the areas studied differed by more than 2.0. The ‘homogenized’ calcium hydroxide was added to the treated water at the K water treatment plant, in order to increase the value of the corrosion index and the concentration of calcium. As the result, the concentration of calcium was increased while the turbidity and pH changed little. The corrosion rate of the tap water with the 'homogenized' calcium hydroxide could be slowed down pretty much. The results suggested that the technology of 'homogenization' of calcium hydroxide can applied to tap water and desalinated water to prevent corrosion in water pipes even in corrosive pipes.