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문병철(Byung-Chul Moon),김동수(Dong-Soo Kim),김희완(Hee-Wan Kim) 한국IT서비스학회 2012 한국IT서비스학회지 Vol.11 No.2
This paper describes how to derive audit criterion, audit domain, detail technology, and functional check items which are core of hospital information system, consisting of OCS, EMR, and PACS. Using the check items listed above, we investigated the objective validity for the construction audit of hospital information system. As a result, the derived audit criterion, audit domain, detail technology, and functional check items were verified as check items for audit. Since using the current audit check items of public area is insufficient to construct efficient, reliable, and stable hospital information system, we suggest adopting the hospital information system audit area, audit check items, and process that are presented in this paper.
응결시간 조절형 아질산계 방청제 개발과 전기화학적 방식성능 평가에 관한 실험적 연구
문병철(Moon Byung-Chul),유조형(Yoo Jo-Hyeong),이한승(Lee Han-Seung),이문성(Lee Moon-Sung) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.1
The purpose of this study is developing a new corrosion inhibitor which improves durability of concrete. It is understood that there are various methods to protect the corrosion of reinforcing steels in concrete such as the nitrous acid lithium, the nitrous acid calcium and so on. When we use the corrosion inhibitor in large quantities, there are accelerates setting time and affect to durability of concrete problem. The nitrous acid lithium has a good effect on delays setting time. However, it is more expensive the nitrous acid calcium, so the nitrous acid calcium has used more than the nitrous acid lithium. When the nitrous acid calcium is in large quantity, there is an accelerates setting time problem. From the results of the experiments, it was confirmed that the lithium, calcium nitrite corrosion inhibitor and new corrosion inhibitor over dossage 0.6 (NO₂-/Cl?) molar ratio is very effective in protecting reinforce ment from corrosion in mortar in which chloride ions have contained.
제자리 화학중합을 통한 그래핀 옥사이드를포함하는 전도성 고분자 나노복합체의 제조와 특성 분석
정연준(Yeon Jun Jeong),문병철(Byung Chul Moon),장민채(Min Chae Jang),김양수(Yang Soo Kim) 한국고분자학회 2014 폴리머 Vol.38 No.2
그래핀옥사이드(GO)와 전도성 고분자(PPy, PANI, PEDOT)로 이루어진 나노복합체를 제자리 화학중합을 통하여 제조하였으며, 전도성 고분자의 함량 증가에 따른 특성변화를 분석하였다. GO에 존재하는 반응성 그룹 그리고GO-poly(4-styrene sulfonic acid)(PSSA) 복합체 및 세 종류 나노복합체에서 고분자의 존재를 확인하였으며, GO와PSSA 또는 전도성 고분자 사이의 상호작용이 제안되었다. GO-PSS/PEDOT 나노복합체의 경우 PEDOT 함량이 증가함에 따라 라만 스펙트럼의 ID/IG 값이 감소하였으며 특성 피크 위치도 크게 변화하였다. GO-PSS/PEDOT 나노복합체의 경우 PEDOT이 GO-PSSA 층을 박리시켜 그들 분자층 사이로 내부 삽입되어 있는 형태를 취하며 GO 또는GO-PSSA 분자층이 열차단층으로 작용하게 되어 나노복합체는 GO 또는 GO-PSSA보다 열안정성이 향상되었다. 또한 GO-PSSA와 PEDOT 사이에 형성된 균일한 hybridization 모폴로지를 확인하였으며, GO-PSS/PEDOT 나노복합체의 경우 가장 우수한 전기전도성을 보여 주었다. Nanocomposites including graphene oxide (GO) and conducting polymers (PPy, PANI and PEDOT) were pre-pared via an in-situ chemical polymerization process, and their characteristic properties depending upon the change of conducting polymer (CP) content were analyzed. A confirmation was made on not only the functional groups formed in GO but also the presence of CP existent in the nanocomposites. The molecular interaction between GO and poly(4-sty-rene sulfonic acid) (PSSA) or CP in the nanocomposites was proposed. With the increase of PEDOT content in the GO-PSS/PEDOT nanocomposite, the estimated value of ID/IG regarding the Raman analysis of them was decreased and a major change of their Raman spectra characteristic peaks was observed. In the GO-PSS/PEDOT nanocomposite, PEDOT molecules made an exfoliation of GO-PSSA layers and thus they were intercalated among layers. Such a unique molec-ular morphology induced the highest electrical conductivity for the GO-PSS/PEDOT nanocomposite among three kinds of nanocomposites prepared in this study. It is also noted that the uniform morphology confirmed in this study helped a thermal stability improvement in the nanocomposite due to the presence of GO or GO-PSSA acting as a thermal barrier.
골시멘트를 사용한 대퇴스템 주위골의 변화에 대한 방사선학적 연구
손원용 ( Won Wong Shon ),문준규 ( Jun Gyu Moon ),문병철 ( Byung Chul Moon ) 대한고관절학회 1996 Hip and Pelvis Vol.8 No.2
On thirty-five Hybrid total hip arthroplasty that had been followed for three to five years, an average of 4.2 years, a retrospective radiographic study was done to assess bone changes of the proximal femur containing cemented femoral stem using a personal computer linked digital camera in a group of asymptomatic patients. Femoral neck atrophy including porosis with cancelization and round off were noted 20 femurs(57%). Fifteen femurs(43%) has remained unehanged from the original femur. Regarding to change of cortical dimensions, 29 hips(83%) in the calcar, 27 hips(78%) around the middle of the stem, 29 hips(83%) around the di4tal tip of the stem remained unchanged from the original femoral cortex. More than 1mm cortial thickenning occurred only around the middle and the distal tip of the stem in five hips(14%) and cortical thinning developed in the calcar, around the middle and the distal tip of the stem in six(17%), three(8%), one(2%), respectively. In summary, most femur remained unchanged or minimally changed on 3-5 years follow up radi- ographs of cemented femoral stem and digitization of radiographs could be useful tool to assess the follow-up radiographs of total hip arthroplasty.