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분포계수와 컬럼길이에 대한 엘루션피이크 및 Halbwertsbreite의 의존성
김동원,류해일,Dong Won Kim,Hai Il Ryu 대한화학회 1983 대한화학회지 Vol.27 No.6
분포계수 1.3에서 325의 범위에 걸쳐, 엘루션 피이크의 분포계수에 대한 의존성이 선형적임을 발견하였다. 또한 Halbwertsbreite도 분포계수에 대하여 선형관계에 있음을 발견하였다. 나트륨과 세슘의 엘루션을 통하여, 컬럼길이와 엘루션이피이크가 선형적 의존관계에 있음을, 길이 30cm에서 540cm의 컬럼을 사용하여 확인할 수 있었다. 컬럼길이와 Halbwertsbreite는 비선형적 의존관계를 가지고 있음을 발견하였다. 컬럼길이의 증가에 따른 Halbwertsbreite의 증가되는 정도는, 서서히 약화된다. 컬럼길이의 증가에 따른 Halbwertsbreite의 강한 편기는, 분포계수차가 매우 작은 물질의 분리에 길이가 긴 컬럼을 사용하는 것이 좋다는 것을 알려준다. Bei Verteilungskoeffizient-Werten von 1,3 bis 325 wurde eine lineare Abhangigkeit sowohol der Halbwertsbreite als auch des Elutionsmaximums vom Verteilungskoeffizient gefunden. Die Elutionsversuche an Natrium und Casium haben gezeigt, $da\beta$ eine lineare Abhangigkeit zwischen Sauleulange und Elutionsmaximum besteht. Dieses Verhalten konnte bei 30cm bis 540cm Saulenlange bestatigt werden. Es ist keine lineare Abhangigkeit zwischen Saulenlange und Halbwertsbreit. Es ist zu sehen, $da\beta$ die Halbwertsbreite mit $gro{\beta}er$ wendendem Saulenlange schwach abfallen. Das starkere Abbiegung der Halbwertsbreite bei wachsender Saulenlange fur Substanzen mit geringeren Verteilungskoeffizientunterschied weist auf eine deutliche Verbesserung der Trennung bei Verwendung von $gro{\beta}en$ Saulenlangen hin.
Trennung von Uranisotopen durch Ionenaustauscher
김동원,Kim, Dong Won Korean Chemical Society 1978 대한화학회지 Vol.22 No.6
陽이온 交換樹指 DOWEX 50W-X8, 200∼400 mesh를 使用하여 우라늄의 同位元素를 分離해 보았다. 1m의 긴 이온 교환컬럼을 使用하여 매우 느린 엘루션 속도로서 얻은 實驗 결과는 우라늄 234와 235가 溶液中에 濃縮된다는 사실이었다. 또한 높은 局部濃縮因子를 얻을 수 있었다. Die Trennung von Uranisotopen im System HCl/Dowex 50W-X8, 200∼400 mesh wurde versucht. Mit einer 1m Kationenaustauschersaule und extrem geringen Stromungsgeschwindigkeiten konnte eine Anreicherung von Uran 234 und Uran 235 in der Losung nachgewiesen werden.
어지럼증, 식욕부진, 전신권태감 등을 동반한 만성 질환에 의한 빈혈 환자의 한방치료 1례
김동원,길봉훈,조혜미,정다해,윤혜수,이은창,원지영,이정은,Kim, Dong-won,Kil, Bong-hun,Jo, Hye-mi,Jung, Da-hae,Youn, Hye-soo,Lee, Eun-chang,Won, Jee-yeong,Lee, Jung-eun 대한한방내과학회 2021 大韓韓方內科學會誌 Vol.42 No.5
The purpose of this study was to report the clinical effect of Korean medicine in a patient with anemia of chronic disease (ACD). The patient was treated with herbal medicine, acupuncture, and moxibustion in combination with Western medicine for around 4 weeks. Although the patient's hemoglobin concentration was maintained at a similar level, the other clinical symptoms of ACD (anorexia, xerostomia, dizziness, and general weakness) were improved after the treatment with Korean medicine. Therefore, Korean medicine treatment may be effective for improving the clinical symptoms of ACD.
건설현장에 사용되는 가설기자재의 안전인증표시 개선방안 연구(I) : 이해관계자 인식 분석 및 표시내용
김동원,원정훈,박용규,임세종,Kim, Dong Won,Won, Jeong-Hun,Park, Yong Kyu,Lim, SeJong 한국안전학회 2017 한국안전학회지 Vol.32 No.4
This study examined the stakeholder cognition of the safety certification marking system by surveying manufacturers, lessors, and users. In addition, among various issues about safety certification marking systems, the improvement of safety certification marking contents was suggested in order to guarantee quality of temporary equipments. The results by statistical method show that it is necessary to increase of users' understanding about the safety certification marking system. In addition, the quality management system of temporary equipments should be introduced to control the actual condition that temporary equipments of various product companies are mixed in a site during removal and reuse processes. For detailed marking contents, it is recommended that a certification mark, an identification number, and the production year should be displayed and the manufacturer name could be selectively presented. Detail informations such as a safety certification number, a product company, a model type or name, a specification, a weight, a product number, and the location of a certification mark should be identified by the identification number.
김동원,박성록,강용환,이남기,Dong Won Kim,Song Reck Park,Yong Whan Kang,Nam Kee Rhee 대한화학회 1980 대한화학회지 Vol.24 No.5
용리액으로 염산과 숙신산 및 그들의 혼합액을 사용하고, 강산성 양이온 교환수지, Dowex 50W-x8, 100∼200 mesh 를 사용하여 금속, Mg(Ⅱ), Ca(Ⅱ), Sr(Ⅱ), Ba(Ⅱ), Cr(Ⅲ), Mn(Ⅱ), Fe(Ⅲ), Co(Ⅱ), Ni(Ⅱ), Cu(Ⅱ), Cd(Ⅱ), Hg(Ⅱ) 및 Pb(Ⅱ)의 이온들에 대한 분포계수를 측정하였다. 분리도와 양이온의 전하와의 관계를 고찰하였고, 이온반지름에 따른 분포계수를 비교하였다. 특히 0.9M 염산용액에서 Fe(Ⅲ), Co(Ⅱ), Ni(Ⅱ)의 완전분리가 가능하였다. Distribution coefficients of various elements with the strong acidic caion-exchanger, Dowex 50W-x8, 100∼200 mesh were investigated in various concentrations of succinic, hydrochloic acid and it's mixture. Based on these distribution coefficients,the experimental condition for their quantitative separation of those elements is established in 0.9 M hydrochloric acid as eluent, several examples of successful separations are described and the dependence of distribution coefficients on ionic radius is also discussed.
인천지역 노인의 국민연금 수급이 여가문화활동 및 생활체육활동에 미치는 영향
김동원(Dong Won Kim) 한국여가레크리에이션학회 2012 한국여가레크리에이션학회지 Vol.36 No.1
The purpose of this study was based on identifying the current status of senior citizens` leisure activity and sport activities based on the benefits of receiving pension. To achieve the result of this study, the research target has been to narrowed to senior citizens over 60 years old in 8 districts of Incheon city and 366 data were used for final analysis. To verify research problem, frequency analysis, and t-test were conducted. following results have been come out. First, the pension beneficiary citizens showed higher participation of leisure and sport activities than non-beneficiary citizens. Second, the most favorable leisure type for both pension beneficiary and non-beneficiary citizens were spending time with friends. Third, pension beneficiary citizens showed higher satisfaction of leisure and sport activities than non-beneficiary citizens. Forth, pension beneficiary citizens participated more in walking and non-beneficiary citizens participated more in hiking. Fifth, pension beneficiary citizens showed to participate sport activities 3~4 times and non-beneficiary citizens F2 times a week and mostly in 30 minutes to 1 hour. Sixth, the pension beneficiary citizens showed to spend average 81,149.43 won and non-beneficiary citizens 59,857.02 won.