Fabrication of carbon nanofiber electrodes using poly(acrylonitrile‑co‑vinylimidazole) and their energy storage performance

Kyung‑Hye Jung,So Jeong Kim,Ye Ji Son,John P. Ferraris 한국탄소학회 2019 Carbon Letters Vol.29 No.2

For electrodes in electrochemical double-layer capacitors, carbon nanofibers (CNFs) were prepared by thermal treatment of precursor polymer nanofibers, fabricated by electrospinning. Poly(acrylonitrile-co-vinylimidazole) (PAV) was employed as a precursor polymer of carbon nanofibers due to the effective cyclization of PAV polymer chains during thermal treatment compared to a typical precursor, polyacrylonitrile (PAN). PAV solutions with different comonomer compositions were prepared and electrospun to produce precursor nanofibers. Surface images obtained from scanning electron microscopy showed that their nanofibrous structure was well preserved after carbonization. It was also confirmed that electrospun PAV nanofibers were successfully converted to carbon nanofibers after the carbonization step by Raman spectroscopy. Carbon nanofiber electrodes derived from PAV showed higher specific capacitances and energy/power densities than those from PAN, which was tested by coin-type cells. It was also shown that PAV with an acrylonitrile/vinylimidazole composition of 83:17 is most promising for the carbon nanofiber precursor exhibiting a specific capacitance of 114 F/g. Their energy and power density are 70.1 Wh/kg at 1 A/g and 9.5 W/kg at 6 A/g, respectively. In addition, pouch cells were assembled to load the higher amount of electrode materials in the cells, and a box-like cyclic voltammetry was obtained with high capacitances.

노인의 영적 간호요구

최미혜,김경희,김귀옥,김기숙,김수강,김정신,김춘숙,노흥진,박지연,성혜연,오명선,이선희,이원옥,이윤영,이현수,장명재,차혜경,채정선,홍상희 중앙대학교 의과대학 간호학과 간호과학연구소 2001 중앙간호논문집 Vol.5 No.1

This study was designed to exam the aged's needs for spiritual nursing care. The purpose was to serve as a basis for the development of spiritual nursing practice. The major findings are as follows : 1. The degree of needs for spiritual nursing care as area was that needs of love and relationship mean 22.0, needs of meaning and object mean 28.2, needs of forgiving mean 13.5. Total needs for spiritual nursing care mean 63.7, which was on the upper middle level. The needs of meaning and object was rated highest. 2. Among the general characteristics of the subjects, needs of love and relatiohship wasn't significanlty different. 3. Among the general characteristics of the subjects, needs of meaning and object was significantly different according to two factors : age(F=7.260, p=0.001), religion(F=5.275, p=0.001). Higher needs of meaning and object was possessed by the older than the younger, by the one who have religion than the other. 4. Among the general characteristics of the subjects, four factors made a significantly difference to needs of forgiving : sex(t=-2.851, p=0.006), age(F=8.201, p=0.001), religion(F=6.928, p=0.000), disease(t=2.327, p=0.024). Higher needs of forgiving was possessed by man than woman, by the older than the younger, by the one who have religion than the other, by the one who have disease than the other.

일반논문(一般論文) : 『황제내경(黃帝內經)』에 나타난 부인과(婦人科)에 관(關)한 문헌고찰(文獻考察)

김혜원 ( Hye Won Kim ),조정훈 ( Jung Hoon Cho ),장준복 ( Jun Bock Jang ),이경섭 ( Kyung Sub Lee ) 대한한의학원전학회 ( 구 대한원전의사학회 ) 2005 대한한의학원전학회지 Vol.18 No.1

저체중 또는 과체중 청소년에서 캠프 프로그램을 이용한 영양 교육효과에 관한 연구

성미경,승정자,류화춘,박재년,박동연,최미경,조경옥,최선혜,이윤신,김유경,이은주 대한지역사회영양학회 2003 대한지역사회영양학회지 Vol.8 No.4

This study was performed to evaluate the effectiveness of a nutrition education program developed for nutritionally imbalanced adolescents. A summer nutrition camp was held for 23 overweight and 16 underweight subjects. Its effectiveness with regard to was evaluated at the end of the camp and 6 months later. Nutrition knowledge, nutritional attitude, food behavior, nutrient intake, exercise habit and ideal body figures desired by the subjects. The results showed significantly higher nutrition knowledge scores at the end of the camp as compared to those obtained prior to the camp program, and these scores were maintained for at least six months. Nutrition attitude scores also improved after the education program, and these improved scores also lasted for 6 months. However, the food behavior scores measured 6 months after the education program were not significantly different from those obtained prior to the camp. Also, the exercise habit, the ideal body figures and the body figures desired by the subjects remained unchanged. When nutrient intakes of subjects were assessed before the program and 6 months later, the mean daily vitamin C intake was significantly increased after the education program. Also, the intake of iron from plant food sources increased in the overweight subjects, while less iron from animal source were consumed by the underweight subjects. Both groups tended to consume more vegetables and fruits 6 months after the education program which may have contribute to the higher vitamin C and plant-based iron intakes. These results indicate that a 4-day nutrition education camp program sustained changes in nutrition knowledge and nutrition attitude for 6 months. The increased intake of vegetables and fruits was also achieved through this education program. However, changes in dietary behavior in adolescents may require repeated education.

췌장 선방세포암 1예

이화정,지준호,박승찬,박정철,최은정,서혜진,이원식,이정림,배병조,손경락,이경희 영남대학교 의과대학 2008 Yeungnam University Journal of Medicine Vol.25 No.2

Acinar cell carcinoma is a rare tumor that represents 1~2% of al1 pancreatic cancers. Clinical and radiologic findings are inconclusive in this disease Acinar cell carcinoma is characterized by rapid progression and early metastasis, which lead to its poor prognosis. A 41-year-o1d man was admitted to our hospital for abdominal pain. Abdominal computed tomography (CT) and positron emission tomography-computed tomography (PET-CT) showed a splenic mass, which was being invaded by a pancreatic tail mass and which had increased ^(18)F-fluorodeoxyglucose (FDG) uptake Primary radical distal pancreatectomy and splenectomy were performed. Pathologic findings revealed an acinar cell carcinoma of the Pancreas The patient underwent a total gastrectomy three months later because of gastric recurrence Four months later, multiple hepatic metastases were discovered, and the patient underwent a left hepatectomy During treatment with capecitabine, there was no evidence of tumor progression for 14 months. We report a case of metastatic pancreatic acinar cell carcinoma, which did not progress for an extended period while the patient was being treated with capecitabme.

원발성 후복막 점액낭샘암종 1예

지준호,이화정,박승찬,박정철,최은정,서혜진,이원식,이정림,배병조,손경락,이경희 영남대학교 의과대학 2008 Yeungnam University Journal of Medicine Vol.25 No.2

Primary retroperitoneal mucinous cystadenocarcinoma is a very rare malignancy, and little is known concerning its Pathogenesis, optimal treatment, and prognosis. A 29-year-o1d pregnant woman (21 weeks) Presented with abdominal discomfort CA 19-9, CA 125, and CEA were normal Abdominal CT scanning revealed a 19x15x13 cm retropentoneal tumor Exploratory laparotomy and tumor excision were performed. Mucinous retropentoneal implants were removed as completely as possible Histologically, the tumor showed focal areas of capsular invasion, but free resection margins The uterus and both ovaries were normal in appearance No adjuvant therapy was pursued. Six months later, Peritoneal and bilateral ovarian metastases were discovered. Hence, we report the details of this case of primary retroperitoneal mucinous Cystadeno-carcinoma and present a review of the literature.

구름의 분류 및 공주지방의 운형별 출현률

鄭惠瓊,朱淳英,蘇鮮燮 公州大學校 基礎科學硏究所 1998 自然科學硏究 Vol.7 No.-

구름의 생성원인은 上昇氣流에 의한 斷熱冷却인데 이에는 대류에 의한 上昇氣流와 前線에 동반되는 上昇氣流가 있고, 또 복사냉각과 한랭공기와 온난공기의 혼합 등이 있다. 이러한 구름의 생성원인에 따라 대기중에 떠있는 구름은 고도와 모양이 다양하다. 구름의 모양은 L. Howard가 1803년에 제창한 것에 기초를 두고 분류되어 있으며 高度와 形態에 따라 10類로 세분되어진다. 그리고 雲形은 다시 구름의 외관상 특징이나 대류의 강도와 같은 구조상의 차이에 따라 種別로 더욱더 세분된다. WMO에서 분류한 10類 雲形 중에서 공주지방에 출현률이 높은 운형을 알아보기 위해 1991년 부터 1995(1996)년 까지 5(6)년간 공주대학교에서 관측한 자료를 가지고 분석해 보았다. 그 결과 출현률이 높은 雲形으로는 St(35%), Ns(19.1%), Cu(14.2%), Sc(13.7%) 등의 순으로 나타났으며 강수시의 雲形으로는 Ns(38.0%), St(22.6%), Cu(12.2%)등의 순으로 나타났다. Cloud air usually formed by adiabatic cooling through ascending currents, radiation cooling or a mixture of warm air and cold one. Ascending currents are caused by convection currents, or they are accompanied with fronts. Thus clouds are formed through various kinds of causes and procedures. Form of clouds was that L.Howard proposed in 1803. And they are subdivided into 10 genera according to their height and shape. Most of the clouds are subdivided into the detailed kinds to the characteristics such as appearance or intensity of convection current. From clouds into 10 genera according to W.M.O.'s classification method, an investigation of percentage frequency of cloud occurrence according to its type has been carried out using the cloud data for five(six) year period from 1991 to 1995(1996). The results are shown that stratus(35%), nimbostratus(19.1%), cumulus(14.2%) and stratocumulus(13.7%) clouds are frequently in the relevant cloud types and nimbostratus(38%), stratus(22.6%) and cumulus(12.2%) in showerly precipitation.

만성신부전 환자에서 발생한 파종결핵

정가영,나선경,윤혜원,송하응,류정화,류동열 이화여자대학교 의과학연구소 2013 EMJ (Ewha medical journal) Vol.36 No.1

Patients with chronic renal failure (CRF) are known to be more susceptible to tuberculosis infection due to impairment of the host defense mechanism. Although extrapulmonary tuberculosis is more prevalent in those subjects and it may induce dismal outcome, its diagnosis has been challenging since there is no specific symptoms of the disease and the clinical course is usually atypical. Herein, We report a case of disseminated tuberculosis diagnosed by ultrasound-guided liver biopsy in a 31-year-old CRF patient presenting sustained fever despite broad-spectrum antimicrobial therapy and progressive cholestatic jaundice.

반복적인 급성 신부전을 유발한 호산구성 장염 1 예

정혜진;김현태;김유선;정현걸;강윤경;문정섭 인제대학교 2011 仁濟醫學 Vol.32 No.-

Eosinophilic gastroenteritis is a rare disorder of unknown etiology characterized by presence of gastrointestinal symptoms, eosinophilic infiltratio n of one or more parts of gastrointestinal tract without involvement of other organs and absence of parasitic infestation. The clinical presentation depends on the extents and depths of eosinophilic infiltration. Mucosal involvement may result in abdominal pain, nausea, vomiting, diarrhea and weight loss. We report a case of eosinophilic enterocolitis in a 55-year-old female presented with abdominal pain and watery diarrhea resulting in recurrent acute renal failure.

색동직물의 배색 선호도에 따른 이미지 연구

정경임,박혜원,조오순 창원대학교 생활과학연구소 2002 생활과학연구 Vol.- No.6

The purpose of this study is for confirming about image research by color scheme of saekdong textile fabrics used modern Korean traditional costume. Method of this study is taste analysis by ten person who is specialized in clothing at changwon national university and ten person of the general about seven samples of saekdong that is selling Korea in domestic. The results are as follows. 1. Image of saekdong arrangement of color are dim, noble (stimulus1,4), unpretending-ness(stimulus5,6), calm, sharp(stimulus7), and activity, splendor(stimulus2,3). 2. Stimulus 1 liked everything is most for taste of saekdong arrangement of color. If apply saekdong in design development according to consumers' changed mark and demand, is expected that can do popularization.