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Solid lithium electrolytes based on an organic molecular porous solid
Park, Jun Heuk,Suh, Kyungwon,Rohman, Md. Rumum,Hwang, Wooseup,Yoon, Minyoung,Kim, Kimoon The Royal Society of Chemistry 2015 Chemical communications Vol.51 No.45
<P>A new type of solid lithium-ion conducting electrolytes prepared by incorporation of Li<SUP>+</SUP> ions into a cucurbit[6]uril (CB[6])-based organic molecular porous solid shows high Li<SUP>+</SUP> ion conductivity (∼10<SUP>−4</SUP> S cm<SUP>−1</SUP>) and mobility (transference numbers, <I>t</I><SUB>Li</SUB><SUP>+</SUP> = 0.7–0.8). In addition, the solid electrolytes show excellent, thermally stable performance even after several temperature cycles.</P> <P>Graphic Abstract</P><P>A new type of thermally stable solid Li electrolytes prepared <I>via</I> incorporation of Li<SUP>+</SUP> ions into porous cucurbit[6]uril (PCB[6]) exhibits high Li<SUP>+</SUP> ion conductivity and mobility. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c5cc02581h'> </P>
발전소 과열증기 온도제어 시스템의 국산 DCS 적용에 관한 연구
박익수(PARK IK SOO),김은기(KIM EUN GEE),박성혁(PARK SUNG HEUK),이기원(LEE GEE WON) 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
There are lots of disturbance in the super heater temperature control system of power plant boiler as follows. 1. Burner light off. 2. Excess Air. 3. Burner tilt. 4. G. R fan flow. Temperature control system of super heater in the power plant has delay time about 5 min. So it is difficult to control the super heater temperature in the power plant. This paper show us the application of domestic development DCS to control the super heater temperature in seoul #5 thermal power plant unit.
Evaluation of Emphysema in Patients with Asthma Using High - resolution CT
(Ki Young Hong),(June Hyuk Lee),(Sung Woo Park),(Jae Hak Joo),(Do Jin Kim),(Sung Heuk Moon),(Soo Taek Uh),(Yong Hoon Kim),(Choon Sik Park),(Jae Seung Park) 대한내과학회 2002 The Korean Journal of Internal Medicine Vol.17 No.1
N/A Background : Bronchial asthma is a clinical syndrome characterized by reversibility of airway obstruction. However, many asthmatics have evidence of residual airway obstruction. It has become evident that the repair of the chronic inflammatory process can lead to various irreversible changes. It is generally accepted that the most common cause for the change is cigarette smoking but it is controversial whether asthma progresses to emphysema. High resolution computed tomography (HRCT) is more sensitive and mare accurate than chest plain films in determining the type and extent of emphysema. This study was carried out to determine whether asthma can be a cause of emphysema without the effect of cigarette smoking and to evaluate clinical characteristics in asthmatics with emphysema. Methods : We studied 58 asthmatic patients with reversible airway obstruction and evaluated the presence of emphysema using HRCT and pulmonary function test. According to HRCT findings, they were divided into 2 groups : Asthmatics with emphysema and the ones without emphysema. Results : of the 58 patients, 7 were revealed to have emphysema. (1) 6 asthmatics with emphysema were smokers, but one patient was a nonsmoker. (2) Highly significant differences between asthmatics with and without emphysema were found in cigarette smoking (p<0.01) and smoking consumption (p<0.01). (3) There were no significant differences in the duration of asthma, age or sex between patients with and without emphysema. (4) There were no significant differences in FEV1(%), FEV1/FVC(%), diffusing capacity for carbon monoxide (DLco) (%) and DLco/alveolar volume between patients with and without emphysema (5) Differences between asthma patients without emphysema and those with emphysema were found to be significant in bronchial wall thickeness (p<0.05) and in total Ig E levels (p=0.07). Conclusion : These results indicate that smoking is a main factor in causing emphysema in asthmatics.
박영성,서문삼,강기혁,김봉수 大田大學校 環境問題硏究所 2002 환경문제연구소 논문집 Vol.6 No.-
γ-Al_2O_3에 몰리브덴을 담지시킨 촉매를 고정층 반응기에 충전하여 벤젠과 같은 VOCs의 촉매산화반응 특성을 살펴보았다. 실험조건은 반응온도를 200∼500℃로 하고, 반응물인 벤젠의 농도를 1,000∼3,000ppm, 공간속도를 5,000∼60,000hr^-1의 범위에서 적용하였다. 연구결과, 벤젠의 전환율은 공간속도가 낮을수록 증가하고, 초기유입농도가 증가할수록 감소하는 것으로 나타났다. 몰리브덴이 담지된 촉매의 성능은 니켈을 제외한 구리나 망간등의 다른 전이금속에 대해서는 다소 떨어지는 것으로 나타났다. 벤젠의 촉매연소반응은 1차 균일반응으로 해석될 수 있었으며, 균일연소반응의 활성화 에너지값은 7.4kcal/㏖ 이었다. Catalytic oxidation characteristics of benzene (one of important source of volatile organic compounds : VOCs) was investigated in a fixed bed flow reactor using Mo/γ-A1_2O_3 catalyst. As operating variables of experiment, reaction temperature (200∼500℃), benzene concentration (1,000∼3,000ppm), space velocity (5,000∼60,000hr^-1) were applied. The experimental results showed that the conversion of catalytic oxidation of benzene was increased with decreasing space velocity, while it was decreased with increasing inlet VOCs concentration. Mo/γ-A1_2O_3 catalyst exhibited more or less low activity among several transition metals such as Cu, Mn, Cr, etc. except Ni. The catalytic oxidation reaction for VOCs(benzene) could be expressed as the first order homogeneous reaction the activation energy of which was 7.4kcal/㏖.