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Choi, Dukhyun,Choi, Min-Yeol,Choi, Won Mook,Shin, Hyeon-Jin,Park, Hyun-Kyu,Seo, Ju-Seok,Park, Jongbong,Yoon, Seon-Mi,Chae, Seung Jin,Lee, Young Hee,Kim, Sang-Woo,Choi, Jae-Young,Lee, Sang Yoon,Kim, Jo WILEY-VCH Verlag 2010 ADVANCED MATERIALS Vol.22 No.19
<B>Graphic Abstract</B> <P>The cover shows an image of fully rollable transparent nanogenerators synthesized using chemical vapor deposition grown large-scale graphene sheets as transparent electrodes and piezoelectric ZnO nanorod arrays. Sang-Woo Kim, Jae-Young Choi, and co-workers report on p. 2187 the electrical and structural stability of the nanogenerators, with excellent charge scavenging performance under external mechanical loads such as bending and rolling. This study shows that graphene-based nanogenerators are very promising for self-powered rollable transparent device applications. <img src='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content.gif' alt='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content'> </P>
수술중 기계적 환기시 HME (Heat and Moisture Exchanger)가 기도저항에 미치는 영향
윤석화,김일문,이상묵,유재현 충남대학교 의과대학 지역사회의학연구소 1996 충남의대잡지 Vol.23 No.2
To compare the airway resistance effects of two heat and moisture exchangers(HME) during short-term intraoperative volume controlled mechanical ventilation. Following a randomized order, the patients were ventilated during 3hrs with two HMEs(Pall conserve and Humi-vent filter). In each patient and for each 5 min, lhr, 2hrs and 3 hrs period, body temperature and airway resistance were measured. The hydrophobic HME (Pall conserve) had a good theraml conservation capacity, but increase airway resistance(11.7±2.9cm H_2O/1/s to 15 4±3.4 after lhr, to 17.3±2.5 after 2hrs, to 17.5±3.3cm H_2O/l/s after 3hrs). The hygroscopic filter(Humi-vent filter) had a good thermal conservation capacity, and less increase airway restance than Pall conserve(13.0±2.3 to 15. 4±3.4. after 1hr, 15.9±2.5 after 2hrs, 15.0±3.3 cmH2O/I/s after 3hrs). The hygroscopic HME had a thermal and humidification capacity and less increase the airway resistance.
윤상권,장통일,임현교 한국안전학회 2003 한국안전학회지 Vol.18 No.3
An accident involving a boiler can result in a disaster since it handles high-pressurized steam so that it may cause an explosion. Therefore, the boiler is very susceptible to industrial accidents. This thesis aimed to develop counter-plans to prevent industrial accidents involved the boiler. At first, after collecting accident cases involving boilers, a survey on the trait of them was carried out. And, on the other hand, a qualitative analysis was conducted to draw out hazardous components in the boiler itself, and their inherent relative importance was assessed. Through this procedure, 'negligence of unsafe condition' was noted as the major cause for unsafe acts, whereas 'fault in work procedure' for unsafe condition. In the meanwhile, results of a hazard analysis using FMEA technique ranked gas safety devices, a switch preventing gas from under-pressurization, protect relays high. In particular, it was pointed out that the water feeding and steam subsystem has more components in hazard than other subsystems. Considering these analyses results, counter-plans to improve safety management was suggested also.
海洋微生物에 의한 高濃度鹽分含有 廢水處理의 基礎硏究 (Ⅰ)
尹星閏,河淸根,李泰永,張哲鉉,朴勝祚 동아대학교 환경문제연구소 1989 硏究報告 Vol.12 No.1
This study considered organic matter decomposition by ocenic microbes as researching organic matter decomposition on kinetics which is in salinity wastewater under condition that the salinity contains 18,000㎎/l Cℓ^(-) The results of this study are obtained as following : 1. Oceanic microbe of this study is yeast, R. glutinis var. salinaria of marina of Rhodotorula genuses. 2. When retention time of filter bed in Bio-coal tower is 24 hr, 1/2V_(max) is 33.75㎎/l·hr, When 72hr, 1/2V_(max) is 15㎎/l·hr, When 120hr, 1/2V_(max) is 10㎎/l·hr. 3. The reaction between oceanic microbes and organic matter is said to be first order and when contact time of filter bed is 2.0hr, k is 0.40 day^(-1).
君笭湯이 장기 알콜투여로 손상된 생쥐 간조직 회복에 미치는 영향
김호현,강윤호,안상현,박인식,이해풍,김진택 世明대학교 한의학연구소 1999 韓醫學硏究所 論文集 Vol.2 No.-
Long-term alcohol consumption have significant harmful effects as fatty liver, hepatitis, and cirrhosis on the hepatic tissues. After voluntary administration of 8% alcohol(18.67㎖/kg/day) for 120 days, the hepatic tissues of ICR mice were daministered with Kunryeongtang extract(KRE;1.24g/kg/day) were observed to investigate the repaire effects of KRE for hepatic damages that caused by chronic alcohol administration. In chronic alcohol administered group, the vacuolation such as fat accumulation(steatosis) were increased in cytoplasm, the destructive configuration of liver plates were shown in necrotic lesion. These regions are aggregation of inflammatory component cell as lymphocytes, neutrophil leucocytes and Kuffer's cell. These hepatic damages were aggravated with time course. In KRE treated group, the decreased of vacuolation and normal construction of liver plates were appeared. These results indicated that the KRE work on the repair of hepatic damages induced chronic alcohol administration.
S.D. Rats를 이용 1, 1-Dichloro-1-fluoroethane의 아민성 흡입독성 연구
김현영,이성배,임철홍,김철우,점용현,한정희,전윤석,최수영,강대봉,이용묵 한국환경독성학회 2002 환경독성보건학회지 Vol.17 No.1
There were no specific effects for test materials on Sprague-Dawley (S.D.) rats in clinical symptoms, amounts of food intakes, weight changes, laboratory findings, and pathology after whole body l, l-Dichloro-1 -fluoroethane (used as coolant, metal cleaner and solvents) exposure(0, 1,500, 3,000, and 6,000 ppm) for 13 weeks (6 hour/day, 5 days/week). However, the loss of capillary vessels in eyeball (pupil) was observed in a female rat among 6,000 ppm group. Though there was a tendency for MCHC (Mean Corpuscular Hemoglobin Concentration) in rat to be decreased (p<0.05), it was not regarded as abnormal because the values were within normal limits. In asthma-stimulation related evaluations, there was also a tendency for inflammatory cell counts in bronchoalveolar lavages to be increased. But it had no statistical significance, and also no dependency on sex and the exposed concentration. Based on this result, the non observed effect level (NOEL) induced by 1, 1-Dichloro-l -fluoroethene inhalation was evaluated in groups with 3,000 ppm below (S .D. Rats, 13 weeks). Finally, it was concluded that the short term exposal of 1, 1-Dichloro-l-fluoroethane is not considered as a asthma stimulant by inhalation despite of some study limitations such as test animals use and short-term exposure .
구성현,윤명호,정윤석,김현만,김세중,김영수 아주대학교 의과학연구소 1996 아주의학 Vol.1 No.1
Emphysematous pyelonephritis is a rare disease complicated from diabetes or obstructive uropathy. The characteristic of this disease is the presence of gas within the renal parenchyma, which may enter the perinephric space by extension. It was first reported in 1898 by Kelly and MacCallum. Up to 1992 only about 90 cases have been reported in English literature. In Korea, Shin et al. reported the first case of emphysematous pyelonephritis in 1982, and only about 28 cases reported in the next decade. In most cases, surgical therapies were recommended for emphysematous pyelonephritis. We report on a case of emphysematous pyelonephritis in diabetic patient who had been treated with medical therapy (antibiotics and blood glucose control by open loop insulin pump). Without surgical intervention, the patient (34-year-old female) recovered from emphysematous pyelonephritis.