http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
PEBAX 3533과 PEG의 혼합막에 대한 기체투과 연구
김광배,조은혜,정성일,임지원,이형근 한국막학회 2013 멤브레인 Vol.23 No.2
본 연구에서는 Poly (ether block amides)(PEBAX) 3533을 이용하여 N2, O2, CH4, CO2, SO2에 대하여 투과도를 측정하였다. 투과선택도를 향상시키기 위하여 분자량 400의 Poly (ethylene glycol) (PEG)를 PEBAX 대비 20%, 40%, 50% 첨가하여 막을 제조한 후 N2, O2, CH4, CO2, SO2 순으로 투과도 및 순수 기체에 대하여 확산도 및 용해도를 각각의 막에 대하여 Time-lag법을 이용하여 측정하였다. 예상한 바와 같이 PEG 함량의 증가에 따라 순수 기체에 대한 투과도는 증가하였으며, 이상선택도의 경우 PEBAX 3533이 지니는 값과 큰 차이를 나타내지 않았으며 PEG 햠량 증가에 따라 투과도의 증가는 각 기체의 PEG에 대한 용해도 증가때문인 것으로 밝혀졌으며 이에 대해서 본문에서 자세히 설명하고자 한다. In order to increase the permeabilities of N2, O2, CH4, CO2, SO2, Poly (ether block amides) (PEBAX) 3533 and its blended membranes with Poly (ethylene glycol) (PEG) of molecular weight 400 were prepared. The contents of PEG400 were 20%, 40%, and 50% and this membranes were characterized in terms of permeability for N2, O2, CH4, CO2, SO2 gases and also diffusivity and solubility as well by using the time-lag gas separation apparatus. As expected, the permeabilities incerased as the contents of PEG400 increased. For the ideal selectivity, there is no big difference in values of between PEBAX 3533 and PEBAX/PEG400 membranes. The increase of permeabilities is due to the increases of solubilities of gases in question and this will be explained in more detail.
전자금융기반시설 취약점 분석·평가 점검기준의 합리적 개선방안
김광배,권헌영 한국지식정보기술학회 2017 한국지식정보기술학회 논문지 Vol.12 No.6
To secure the safety and reliability of the electronic financial transactions, the financial company perform vulnerability analysis and evaluation on the electronic financial infrastructure. However, the financial sector vulnerability analysis and evaluation criteria that are used in the analysis and evaluation of electronic financial infrastructure vulnerabilities by financial companies have not been updated since its distribution in 2012, Although vulnerability analysis and evaluation agencies such as the financial information sharing and analysis center and the information security professional services company are updating their own vulnerability analysis and evaluation standards, since the standards are not standardized, financial companies are confused when performing vulnerability analysis and evaluation. n this paper, we analyze the problems of the existing analysis and evaluation criteria of the electronic financial infrastructure and propose a measure to establish a reasonable inspection standard in accordance with the characteristics of the financial institution's electronic financial infrastructure and suggest a supplementary point using the information security management system. In addition, We introduced example case of establishing the criteria of analyzing and evaluating the vulnerability according to the autonomous security system of the financial company