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무선 영상 전송 인터페이스를 지원하는 NAS 기술 기반의 스토리지 시스템 설계
신성훈(Sung-hun Sin),이효욱(Hyo-Uk Lee),김원(Won Kim) 한국정보기술학회 2013 Proceedings of KIIT Conference Vol.2013 No.5
본 연구는 60GHz 주파수 대역의 무선 영상 전송 인터페이스와 스토리지 시스템을 결합한 융합 시스템 설계이다. 특히 무선 영상 전송 인터페이스의 HDMI 멀티 패스(Multi-path) 기술과 파일(혹은 디렉토리)이 스토리지 디바이스에 저장되는 기술을 하나의 파일 서버에서 관리하는 NAS 시스템 기술을 접목시켜 무선 영상 전송 인터페이스를 지원하는 멀티미디어 스마트 스토리지 시스템을 구현한다. This study is fusion system design about wireless combining video transmission in 60GHz band interface of and fusion design system with storage system. Storage system based on NAS-technology is that NAS-technology managed one file server integrates to HDMI Multi-path technology within wireless video transmission interface and the technology saving file into storage device
상수도관 부식제어를 위한 pH 및 알칼리도 조절에 따른 수질인자 고찰
우달식 ( Dal Sik Woo ),신성훈 ( Sung Hun Sin ),이호선 ( Ho Sun Lee ),황병기 ( Bung Gi Hwang ),채수권 ( Soo Kwen Chae ) 한국수처리학회 2013 한국수처리학회지 Vol.21 No.2
The purpose of this study was to evaluate the water quality parameters by the pH and alkalinity adjustment for corrosion for corrosion control in water pipes. Ca(OH)2 used to adjust the pH was somewhat effective than NaOH for corrosion control in water pipes. The turbidity increase of alkaline chemicals was Ca(OH)2 >NaHCO3>Na2OH3>NaOH. The corrosion rate and iron concentration eluted in the carbon steel pipe coupons were decreased with increasing alkalinity. In conclusion, the alkaline chemicals to control of water pipes should be selected by considering maintenance, price economy and safety.
인산염계 부식억제제 주입이 배급수관내 미생물 재성장에 미치는 영향
우달식 ( Dal Sik Woo ),신성훈 ( Sung Hun Sin ),이호선 ( Ho Sun Lee ),황병기 ( Bung Gi Hwang ),채수권 ( Soo Kwen Chae ) 한국수처리학회 2013 한국수처리학회지 Vol.21 No.2
This study aims to measure the microorganisms attached in the steel pipe, stainless steel, STS 304, and PVC to find out the impact of the corrosion inhibitor on the microbial regrowth within the water pipe and at the same time compare the characteristics of biological film formation depending on the concentration of residual chlorine and the changes in the concentration of corrosion inhibitor. When the corrosion inhibitor was injected in the condition that the treatment water is more or less than TOC 2mg/L, the increase or decrease in the amount of attached microorganisms did not appear and the amount of attached microorganisms was less than the control group that the corrosion inhibitor was not injected. This means that phosphate components are not used as necessary nutrients for the growth of microorganisms in the condition that the concentration of organic matter is low and at the same time, is considered that the corrosion inhibitor formed the thin films on the surface of metal pipe to avoid the progression of corrosion, thus minimizing the growth environment where microorganisms like corrosion products are inhabitable.