Nanogenerators: Fully Rollable Transparent Nanogenerators Based on Graphene Electrodes (Adv. Mater. 19/2010)

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>

제통단이 퇴행성 슬관절염 환자의 삶의 질에 미치는 영향

서병관,류성룡,강중원,우현수,이상훈,이재동,최도영,김건식,이두익,이윤호 EAST-WEST MEDICAL RESEARCH INSTITUTE KYUNG HEE UNI 2005 東西醫學硏究所 論文集 Vol.2005 No.-

Objectives : to evaluate the effects of Jetongdan, the newly developed herbal medicine, on the quality of life in patients with osteoarthritis of knee Methods : Placebo-controlled, randomized clinical trial on the 80 patients with osteoarthritis of the knee was fulfilled. After enrollment, they took medication as they enrolled. And they were asked to answer the questionnaires (Korean Health Assessment Questionnaire (KHAQ), Lequesne's functional index (LF1), visual analogue scale (VAS)) and analysed with the erythrocyte sedimentation rate (ESR) at baseline, after 4 weeks and 8 weeks of medication. Results : Total KHAQ score, some categories of KHAQ like hygiene, activities were significantly improved after 8 weeks of medication. And the change of the KHAQ score was significantly correlated with the change of VAS. But LFI, VAS, ESR level was not significantly improved, and it was considered because of the short medication period and small size of study population. Conclusion : In conclusion, Jetongdan could improve the health-related quality of life in patients with osteoarthritis of knee. Further study in the large population, in long period were recommended.

안근성 중증근무력증이 동반된 갑상선 기능항진증의 임상상 : Report of Six Cases

서지영,김두만,김현규,최철수,임성희,유재명,최문기,유형준,박성우,김형철,송홍기,김덕환 대한내분비학회 2000 Endocrinology and metabolism Vol.15 No.4·5

육경에 대한 외과적 자극이 사슴뿔의 성장에 미치는 영향

서길웅,상병찬,김상우 충남대학교 농업과학연구소 2006 농업과학연구 Vol.33 No.2

This study carried out to investigate the effect of cutting stimulation on time of cutting, yield and length of antler in Sika deer. There was no significance between surgical stimulation and length of antler, but length was the longest in one side cutting group and the shortest in both side cutting group. Development of point was increased as the number of wounds in the second year (P<0.05). Time of casting was 2 weeks earlier in one side cutting group (P<0.05) than in both sides cutting group. Yields of antler were 148±23g when pedicle was not cut, and 126±61g, 179±63g, 170g, and 48±25g when pedicle was cut by 0.3cm, 0.4cm, 0.5cm and 0.6cm, respectively. The most desirable thickness of pedicle cut was 0.4-0.5mm. Yield of antler was increased as the size of wound in the first year, and 588, 790 and 657g in control, one-cut and both-cut, respectively. Yields of antler in one-cut is significantly high (P<0.05).

반도체-원자 초격자의 광전자 특성

서용진,정소영,박성우 대불대학교 2002 論文集 Vol.8 No.1

Optoelectronic characteristics of the superlattice as a function of deposition temperature and annealing conditions have been studied. The nanocrystalline silicon/adsorbed oxygen superlattice formed by molecular beam epitaxy (MBE) system. Consequently, the experimental results of superlattice with multilayer Si-O structure showed the stable photoluminescence(PL) and good insulating behavior with high breakdown voltage. This is very useful promise for Si-based optoelectronic and quantum device as well as for the replacement of silicon-on-insulator(SOI) in ultra high speed and lower power CMOS devices in the future, and it can be readily integrated with silicon ULSI processing.

CMP 공정의 재현성 확보를 위한 공정제어 범위의 결정

서용진,정소영,김철복,박성우,이경진,김기욱,박창준 대불대학교 2002 大佛大學校大學院 硏究論文集 Vol.- No.1

To achieve the ULSI goals of higher density and greater performance, STI(shallow trench isolation)-CMP(chemical mechanical polishing) process has been attracted. Recently, the direct STI-CMP process without the conventional complex reverse moat etch process has established by using slurry additive with the high selectivity between SiO2 and Si3N4 films for the purpose of process simplification and in-situ EPD(end point detection). However, STI-CMP process has various defects such as nitride residue, torn oxide and demage of silicon active region. Also, it was difficult to assure the suitable process margin in the STI-CMP process. To solve these problems, in this paper, we discussed to determine the control limit of process, which can entirely remove the oxide on nitride film from the most area of high density as reducing the damage of dense moat area and minimizing dishing effect in the large field area. We, also, evaluated the wafer-to-wafer thickness variation and the day-by-day reproducibility of STI-CMP process after repeatable tests.

공급률 및 탈곡통 길이 변화에 따른 자탈형 콤바인 탈곡 성능

서신원,이상우,허윤근 충남대학교 농업과학연구소 2006 농업과학연구 Vol.33 No.2

Threshing loss was increased due to dropping of the threshing efficiency when the 4 row head-feed combine harvested 5 row rice to improve harvesting performance of a combine. Reasonable design criteria were examined to determine the ranges of both of feed rate and the length of threshing drum for the 4 row head-feed combine being used as a 5-row combine. Harvesting performance increased as working width or working speed increased, it resulted in 15% increase when the working width increased from4 row to 5 row. Harvesting operations of the 4 row combine performed normally in the 4 row rice in threshing loss less than 1%, however, threshing loss increased to 2.25% in the 5 row due to poor threshing efficiency. The length of threshing drum was increased from 710 mm to 810 mm as well as the speed of crop feed chain was increased from 0.61 m/s to 0.75 m/s so as to improve the poor threshing efficiency resulted from the enlarged working width from the 4 row to the 5 row, which would decrease threshing loss less than 1%.

정신과 폐쇄 병동 환경 평가에 영향을 미치는 임상변인 : 치료의 질적 향성을 위한 예비적 연구 The Preliminary Study for Promoting the Quality of Psychiatric Inpatient Treatment

서정석,류은정,이상미,한미희,최귀순,손인기,남범우 건국대학교 의과학연구소 2003 건국의과학학술지 Vol.13 No.-

Purpose: IS prelminary study was designed to assess the clinical variables influencing on the ward atmosphere in psychiatric closed ward and to promote the quality of psychiatric inpatient treatment. Method: 41 psychiatric inpatients were selected in Chung-ju hospital, Konkuk university. Ward Atmosphere Scale(W AS) was used to evaluate patients' perception of ward milieu. WAS score were compared among subgroups with respect to the clinical variables such as duration of admission, frequency of admission, and diagnosis. Results: Significantly, patients who have hospitalized for 1 month to 2 months reported lower score of WAS and patients who have hospitalized for longer than 2 months reported higher score of WAS. The relationship between educated levels and WAS score was not significant. First admitted patients reported significantly lower score of WAS. Bipolar patients reported significantly higher score of WAS and alcohol related patients reported significantly lower score of WAS. Conclusion: The 1st admitted patients, patients with alcohol problem and educated patients were had less satisfied with psychiatric closed ward. Thus, by considering these factors, more specified therapeutic approach and plan should be conducted.

미세알부민뇨를 동반한 인슐린 비의존성 당뇨병 환자에서 혈장 Endothelin의 변화

서예경,정상원,남직화,신병호,전종민,김정국,김동희,하승우,김보완 慶北大學校 醫科大學 1996 慶北醫大誌 Vol.37 No.3

목적 : 혈관내피세포에서 생성되는 endothelin(ET)는 강력한 혈관수축작용을 가진 펩타이드로 당뇨병 환자에서 혈관내피세포의 손상여부에 따라 혈중 농도가 증가할 수 있으며 혈관합병증과 관련이 있다는 보고가 있다. 그러나. 혈중 ET치의 상승과 당뇨병성 합병증의 상관성에 대해서는 논란이 많다. 이에 저자들은 인슐린 비의존성 당뇨병 환자에서 미세알부민뇨의 동반유무에 따른 혈중 ET치의 변화 및 혈장 ET치와 요중 알부민 배설률과의 상관성을 검토하였다. 대상 및 방법 : 인슐린 비의존성 당뇨병 환자중 미세알부민뇨를 보인 22명과 정상알부민뇨를 보인 43명을 대상으로 하였으며 혈장 ET를 측정하여 요중 알부민 배설률, 당뇨병성 망막증 및 당뇨병 관련인자들과의 관계를 비교하였다. 결과 : 당뇨병성 망막증이 합병된 군에서 망막증이 합병되지 않은 군에 비하여 혈장 ET치가 유의하게 높았던 반면 (각각 1.9±0.66, 1.5±0.76pg/㎖, p<0.05) 미세알부민뇨를 보인 군과 정상알부민뇨를 보인 군사이에 혈장 ET치는 통계학적으로 유의한 차이가 없었다(각각 1.9±1.14, 1.7±0.69pg/㎖). 또한 요중 알부민 배설률과 혈장 ET치 사이에 유의한 상관관계는 없었으며 미세알부민뇨를 동반한 인슐린 비의존성 당뇨병 환자군에서 혈장 ET치는 당뇨병의 관련인자들과도 유의한 상관관계가 없었다. 결론 : 인슐린 비의존 당뇨병 환자에서 혈장 ET치가 초기 당뇨병성 신증의 합병여부나 미세알부민뇨의 정도를 반영하기는 어려울 것임을 시사한다. Background : Endothelin(ET), a potent vasoconstritor peptide released from vascular endothelial cells, is known to be increased in diabetic patients with vascular damage and related with diabetic angiopathy. However, whether plasma ET levels may be related to diabetic complications is controversial. We studied the change of ET levels in non-insulin dependent diabetics with microalbuminuria and relation between ET and urinary albumin excretion rate. Methods : Plasma ET levels of 22 non-insulin dependent diabetics with microalbuminuria and 43 patients with normoalbuminuria were measured and relations of plasma ET to diabetic complications such as urinary albumin excretion rate, retinopathy and other associated factors were studied. Results : Plasma ET levels were significantly higher in patients with diabetic retinopathy than those without retinopathy(1.9 ± 0.66 vs 1.5 ± 0.76 pg/㎖. p<0.05). The difference, however, between diabetics with and without microalbuminuria was not significant(1.9 ± 1.14 vs 1.7 ± 0.69 pg/㎖). There were no correlations of plasma ET to urinary albumin excretion rate and to the other associated factors in non-insulin dependent diabetics. Conclusion : These results suggest that plasma ET levels may not seem to act as a predictor of diabetic nephropathy or microalbuminuria in non-insulin dependent diabetics.

인슐린비의존형 당뇨병 환자에서 심전도상 QT 간격 변수들과 허혈성 심장질환 발생의 관계

서승오,진도균,박진철,진희종,임성희,유형준,박성우,박종태 대한노인병학회 2000 Annals of geriatric medicine and research Vol.4 No.3