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$RuO_2$박막의 미세 구조가 박막형 마이크로 슈퍼캐패시터의 특성에 미치는 영향
김한기,윤영수,임재홍,조원일,성태연,신영화,Kim, Han-Ki,Yoon, Young-Soo,Lim, Jae-Hong,Cho, Won-Il,Seong, Tae-Yeon,Shin, Young-Hwa 한국재료학회 2001 한국재료학회지 Vol.11 No.8
All solid-state thin film micro supercapacitor, which consists of $RuO_2$/LiPON/$RuO_2$ multi layer structure, was fabricated on Pt/Ti/Si substrate using a $RuO_2$ electrode. Bottom $RuO_2$ electrode was grown by dc reactive sputtering system with increasing $O_2/[Ar+O_2]$ ratio at room temperature, and a LiPON electrolyte film was subsequently deposited on the bottom $RuO_2$ electrode at pure nitrogen ambient by rf reactive sputtering system. Room temperature charge-discharge measurements based on a symmetric $RuO_2$/LiPON/$RuO_2$ structure clearly demonstrates the cyclibility dependence on the microstructure of the $RuO_2$ electrode. Using both glancing angle x-ray diffraction (GXRD) and transmission electron microscopy (TEM) analysis, it was found that the microstructure of the $RuO_2$ electrode was dependent on the oxygen flow ratio. In addition, x- ray photoelectron spectroscopy(XPS) examination shows that the Ru-O binding energy is affected by increasing oxygen flow ratio. Furthermore, TEM and AES depth profile analysis after cycling demonstrates that the interface layer formed by interfacial reaction between LiPON and $RuO_2$ act as a main factor in the degradation of the cyclibility of the thin film micro-supercapacitor. $RuO_2$ 박막을 전극으로 하여 Pt/Ti/Si 기판 위에 $RuO_2$ /LiPON/$RuO_2$의 다층 구조로 이루어진 전고상의 박막형 마이크로 슈퍼캐패시터를 제작하였다. 전극용 $RuO_2$박막은 반응성 dc 마그네트론 스퍼터를 이용하여 $O_2$/[Ar+$O_2$]비를 증가시키며 성장시켰고, 비정질 LiPON 고체전해질 박막은 순수한 질소분위기 하에서 rf 스퍼터링으로 성장시켰다. 상온에서의 충-방전 측정을 통해 $RuO_2$ 박막의 미세구조에 따라 슈퍼캐패시터의 사이클 특성이 영향을 받는 것을 알 수 있었다. Glancing angle x-ray diffraction(GXRD)과 transmission electron microscopy (TEM) 분석을 통해 산소 유량의 증가가 $RuO_2$박막의 미세 구조의 영향을 주는 것을 알 수 있었고, X-ray photoelectron spectroscopy (XPS) 분석을 통해 산소 유량 비의 증가가 Ru과 산소간의 결합에도 영향을 줌을 알 수 있었다. 또한 사이클 후 슈퍼캐패시터의 TEM 및 AES depth profiling 분석을 통해, 충-방전 시 $RuO_2$와 LiPON과의 계면반응에 의해 형성된 계면 층이 사이클 특성에 영향을 줌을 알 수 있었다.
元炳徽,洪漢基,李海浜 동국대학교 농림과학연구소 1967 農林科學 論文集 Vol.1 No.-
The routine entomological investigations were carried out in the area of kaejeong myon, okku-Gum, cholla-pukdo province, 1964 and sinchang-myon, a san gun, chungchong namdo province, 1965. These investigations had been paid attention the better understanding of the behavior of anopheline mosquitos with regarding to the polulation density, resting habit, breeding habti. The results obtained are as follows: 1. During the investigation, three species of anopheline mosquitos were recorded, such as anopheles sinensis Wiedmann 1985, Anopheles sineroides Yamada 1925 and Anophles yatsushiroensis Miyazaki 1965. Anopheles yatsushiroensis Miyazaki 1951, so far only recorded in Japan, was the first reconded species in Korea in 1964; the locality where it was found is kaejong myon, okku gun, cholla pukdo province. 2. Anopheles mosquitos begin to appear from the middle of April and to disappear in October. The collected date of mosquictos by resting place collection in cow shed are three weeks earler than night cow biting collection. 3. Resting places of anopheline mosquitos are mainly in shed and outdoors which has high humidity and shadow. 4. The population density of Anopheles sinensis collected in cow shed and by cow biting appeared a peak in late of june and early of july, and secondary small peak in late of august and early september. 5. The biting activity at night from dusk to dawn, sharply decreasing just before dawn. The peak period has shown in different time in each months such as 21;00-22;00 hours in june, 23:00-24:00 in august, and 23:00-24:00 in september. 6. The minimum temperature for mosquito biting activity is 15°6 and the optimum is between 24-25℃ the activity decreased. 7. Anopheles sinensis appeared to be zoophilic in Sinchang area 30 times anthrophophilic than former area. 8. The light attraction of anopheles sinensis is 2.5 times higher. 9. The parous rate of Anopheles sinensis is significantly low in middle June and early August. 10. The parous rate of Anopheles sienesis caught by cow biting collection appeared higher after midnight (24:00-03: oohours) with no relation to the peak period of biting activity.
간경변증을 동반한 당뇨병 환자에 있어서 2 차적으로 발생한 피부괴사 1 예
남은숙,김응진,강신재,김희연,홍한기,백정민,오영배,이찬주,김혜랑,곽호근,유정하 대한내과학회 1995 대한내과학회지 Vol.49 No.6
It has long been recognized that the liver plays an important role in carbohydrate homeostasis. Petrides reported that Diabetes mellitus in insulin resistant cirrhotic patients developed as the result of progressive impairment in insulin secretion with the development of hepatic insulin resistance leading to fasting hyperglycemia and a diabetic glucose tolerance profile. Diabetic patients with debilitating illness, including hepatic cirrhosis and acute alcoholic heptitis, appear to be more prone to infections, and the accumulating evidence for an immunological defect superimposed upon the metabolic abnormalities of diabetes is becoming increasingly convincing. We described a patient with diabetes mellitus and liver cirrhosis who has purpura on body due to falling down, resulting in perineal and scrotal necrosis (Fournier`s gangrene) as well as foot gangrene. Despite aggressive antibiotic therpy and debridement, Foumier`s gangrens is associated with a high motality. We performed necrotic skin resection and reconstrucitve procedure with massive antibiotics therapy
김동호,나문준,박순창,홍한기,김진환 충남대학교 의과대학 지역사회의학연구소 1997 충남의대잡지 Vol.24 No.1
Pulmonary anthracofibrosis may appear as a dark-gray color pigmentation on bronchus or pulmonary parenchyme and can result in pulmonary inflammation or fibrosis or emphysema. Some of the pigmentation can be accumulated in lymph node through lymphatics and result in lymphadenopathy. The causes of anthracofibrosis are aspiration of coal dust, or aromatic hydrocarbons, or air population, or silica dust and can be developed along with smoking or tuberculosis or lung cancer. We report 4 cases of pulmonary anthracofibrosis because we think it is necessary to distinguish pulmoary anthracosis acompanied by atelectasis, lymph node enlargement, and invasion to adjacent organ from lung cancer.