http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Analysis of Insulation Diagnosis for Generator‑Motor Stator Winding in Pumped Storage Power Plant
Soo‑Hoh Lee,Tae‑Sik Kong,Hee‑Dong Kim 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.3
In this study, insulation diagnostic tests were conducted on pumped storage power plant (PSPP) generator-motor stator bars with artifcially simulated defects in order to improve solutions to perform preventive maintenance and track insulation diagnostic data for generator-motors by proving the efectiveness of insulation indices. Moreover, ozone (O3) concentration was estimated in order to relate it to partial discharge (PD) in laboratory to ensure the efectiveness of ozone as another index for insulation deterioration. By performing an ofine PD test and ultraviolet (UV) observation on one of the generator-motors during overhaul, and an ozone concentration measurement for the identical machine after the overhaul, it was concluded that ozone estimation could be a powerful index for insulation diagnosis under actual operational conditions. It was further developed that ozone measurement is useful to detect not only discharges in slots as mentioned in some studies but also discharges at the end-winding as proven in this study. The fndings of this study are expected to contribute to more reliable maintenance of generator-motors in PSPPs by achieving elaborate insulation diagnosis via multiple diagnostic indices.
야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로
조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6
Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.
구현우,선수림,박미화,이재수,이용규,이금석,홍영식,한보광 동국대학교 전자불전연구소 2007 전자불전 Vol.9 No.-
본 연구는 한글대장경 전산화 6차 사업으로 한글대장경 30책 분량을 전산화하여 검색 시스템을 구축하는데 목적이 있다. 고려대장경의 우리말 번역본인 한글대장경을 전산화하기 위해 개역된 고문헌을 입력하여 데이터베이스로 구축하고, 인터넷을 통해 그 내용을 검색할 수 있도록 한다. 한글대장경 고문헌은 확장한자, 누락문자, 특수문자 등을 포함하고 있어서, 본 연구에서는 효과적인 입력과 저장을 위해 유니코드(Unicode)를 사용하며, 유니코드로 표현하지 못하는 문자들은 이미지 폰트를 생성하여 표현한다. 데이터베이스를 구축하기 위해서 DBMS로는 MS-SQL 7.0을 사용하고, 운영체제로는 윈도우 2000 서버를, 웹 서버로는 IIS(Internet Information Server)를 사용하여 검색 시스템을 구축하였다. 또한 다양한 검색 방법을 제공하는 검색 엔진을 개발하여, 유니코드로 저장된 한글대장경 고문헌의 내용을 웹(http://ebtc.dongguk.ac.kr/)을 통해 보다 쉽게 전 세계에서 접근할 수 있도록 한다. This research aims for constructing retrieval system by digitizing thirty books quantities of Hangul Tripitaka in the 6th Hangul Tripitaka Digitization Project. For digitizing Hangul Tripitaka which is a Korean version of the Tripitaka Korean, we can input, store the retranslated archaic documents in database, and search their contents through the Internet. Because the archaic documents of Hangul Tripitaka includes extension characters of Chinese origin, missing characters and special characters, we input and store documents use Unicode and make image fonts that cannot be represented by Unicode. Also, for developing retrieval system in this research, we use MS-SQL 7.0 and IIS(Internet Information Server) on Windows 2000 Server. By developing search engine which provides variety of retrieval methods, people who concern the archaic documents in the whole world can access Hangul Tripitaka saved as Unicode using the Web.
Retinol Palmitate가 연골발생에 미치는 영향에 관한 형태학적 연구
이향주,김수일,이영호,김원식 충남대학교 의과대학 지역사회의학연구소 1993 충남의대잡지 Vol.20 No.1
Vitamin A, an isoprenoid which has cyclohexynyl ring chemically, is known to promote the growth and differentiation during development and regeneration, to maintain the state of health and to improve the vision, and is known to be essential in mucous secretion, reproduction and maintenance of epithelium. Recently, the anticarcinogenic and antimutagenic effects of vitamin A and the teratogenic effects were reported, however the mechanism of action of vitamin A was not confirmed thoroughly. In this experiment, the morphological changes after administration of retinol palmitate during the development of hindlimb and differentiation of chondrocytes were observed in the rat fetuses. SpragueDawley rats were used as an experimental animal. The rats were divided into 2 groups : control and vitamin A(retinol palmitate) treated group. In retinol palmitate treated group, 500mg/kg of retinol palmitate(Sigma Chemicals Co.) dissolved in corn oil(Sigma Chemicals Co.) was administered orally with gastric tube once at the day 8.5 of gestation. In the control group, corn oil of equal volume as in retinol palmitate treated group was administered. On the gestation day 12.5, 13.5, 14.5, 15.5 and 16.5, the rats were sacrificed under ether anesthesia, laparotomized and hysterectomized. Under stereoscope the pregnant sacs and the fetuses were observed, and the body weight of each fetus was measured. For the observation of external development of hindlimb, the embryos were stained with Nile blue sulfate, and compared the differences between 2 groups. The histological changes were observed light microscopically after routine processing, and H-E & alcian blue staining, and the ultrastructural changes of chondrocytes observed electron microscopically. The results were as follows ; 1. The survival rate of fetuses was lowered in the retinol palmitate treated group significantly except the day 12.5 of gestation. 2. In the retinol palmitate treated group, the development of hindlimb bud and aggregations of precarti lagenous mesenchymal cell were decreased significantly on the day 12.5 and 13.5 of gestation. 3. Cartilage matrix formation was found initially on the day 13.5 of gestation in control group and on the day 14.5 of gestation in retinol palmitate treated group. 4. Electron microscopic changes of chondrocytes after retinol palmitate administration were as the followings : mitochondrial and IR swelling, decreased filopodia, reduced intercellular space and cartilage matrix, abnormal aggregation of glycogen particles and increased intercellular junctions. According to the above results, it is considered that retinol palmitate has an inhibitory effect on the hindlimb developmnet by reducing the aggregations of precartilagenous mesenchymal cell and chondrocytic structural and metabolic changes.
Aflatoxin B_1과 Dexamethasone이 白鼠 肝 Kupffer 細胞와 內皮細胞에 미치는 影響에 關한 走査電子顯微鏡的 硏究
이영호,김수일,박경란,노승무,김원식 충남대학교 의과대학 지역사회의학연구소 1992 충남의대잡지 Vol.19 No.1
For the study on the effects of aflatoxin B_1 and corticosteroid to the Kupffer cells and endothelial cells of the liver, aflatoxin B_1(1mg/kg) and dexamethasone(4mg/kg) were administrated to the 3 groups of rats; the aflatoxin B_1-treated group, the dexamethasone-treated group, and the aflatoxin B_1 and dexamethasone-treated group. The liver tissues were fixed by perfusion with 0.5% glutraldehyde and 0.5% paraformaldehyde solution at 1, 12, and 24 hours after the administration. The fixed liver tissues were cracked and observed Kupffer cells and endothelial cells under scanning electron microscope. The results were as follows; 1. In aflatoxin B_1-treated group, the Kupffer cells were destructed severely and the endothelial cells were destructed partially. 2. In dexamethasone-treated group, the cytoplasmic processes of the Kupffer cells were shortened, but the endothelial cells showed no morphological changes. 3. Destructive changes of Kupffer cells and endothelial cells in the aflatoxin B_1-treated group were reduced after administration of dexamethasone. 4. The large Kupffer cells were destructed and disappered after administration of aflatoxin B_1, but small Kupffer cells were found until 24 hours after administration. 5. In aflatoxin B_1 and dexamethasone treated group, Kupffer cells were destructed severely but the capacity to catch foreign particles were remained. Accordingly, it is considered that aflatoxin B_1 will destruct Kupffer cells severely and the endothelial cells partially, but dexamethasone will reduce the destructive changes of the Kupffer cells and endothelial cells induced by aflatoxin B_1 respectively.
이수진,전무형,조성환,김덕환,박창식,김명철 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10
Thirty dairy cows with pododermatitis were selected and treatment effect of ozone ointment for bovine pododermatitis was investigated. In addition, bactericidal effect of ozone ointment on etiological agent of bovine pododermatitis was evaluated. The pathohistological examination for the pododermatitis, according to application with ozone ointment was investigated. Thirty dairy cows were divided two groups: control group(vaseline group: 15 cows), treatment group(ozone ointment group: 15 cows). Various parameters were evaluated in terms of the lameness score, swelling score, lesion score, WBC, neutrophil, pathohistological finding, and antimicrobial action. As compared with vaseline group, ozone ointment group revealed significant decrease of lameness (p<O.05), swelling (p<O.O1) and lesion score (p<O.05) were shown in hoof lesions on 14 days after application. In hematological findings, WBC count revealed slightly high values within normal range before treatment, however, this was I Corresponding author improved on 14 days after application of ozone ointment. The number of neutrophils was slightly higher than that of normal, however. this was improved on 14 days after application of ozone ointment. In pathohistological findings, normal dermal tissue was found in tissues with pododermatitis on 14 days after application of ozone ointment. In antimicobial action, marked decrease rate of bacteria was observed in feet of all cases treated with ozone ointment. The decreasing rate of bacteria in anaerobic culture was higher than that in aerobic culture.
이수진,조성환,전무형,김덕환,박창식,한홍율,김명철 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10
This study was carried out to determine therapeutic the effect of ozonated water therapy on bovine pododermatitis. In addition, bactericidal effect of ozonated water on etiological agent of bovine pododermatitis was examined. The pathohistological examination for the pododermatitis, according to application with ozonated water and ozone ointment was investigated. Thirty healthy cattle were divided two groups(each of 15) : control group (povidone group), treatment group (ozone solution group). Various parameters were evaluated in terms of the lameness score, swelling score, lesion score, WBC count, neutrophil count, pathohistological finding, and antimicrobial action. The decrease of lameness and lesion score were shown in hoof lesions on 14 days after application of ozonated water. Significant decrease of swelling was shown in hoof lesions on 14 days 1 Corresponding author after application of ozonated water(p < 0.01). In hematological findings, WBC count revealed values within normal range. The number of neutrophils was slightly higher than that of normal, however, this was improved on 14 days after application of ozonated water. In pathohistological findings, recovery was rapid macroscopically and microscopically in the treatment with ozonated water on the hoof lesions and ozonated water was effective. In antimicobial action, bactericidal effect was observed in treatment with ozonated water on the hoof lesions and ozonated water was effective.
장리라,최영식,박요한,문대성,김자경,김성은,최인수,유찬희,남성진 고신대학교 의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.3
Metastasis to the thyroid gland is usually considered uncommon. The most frequent sites of the primary tumor include the kidney, breast and lung. Its presence often indicates poor prognosis. Metastases represent the advanced stage of the tumors and fine needle aspiration cytology is and important way of diagnosis in thyroid metastasis. we experienced a case of Metastatic Small cell Lung Carcinoma to the Thyroid Gland. A 58-year-old man with Graves' disease diagnosed pulmonary nodule in the left upper lung field on his chest X-ray film. The patient's thyroid gland was diffusely swollen, and elastic to hard. A thyroid ultrasonography showed 1cm sized hypodense nodule on the left thyroid gland. The patient underwent a ultrasonography guided fine needle aspiration cytology of the mass. Cytological diagnosis was a metastatic small cell carcinoma. Then Chemotherapy was administered to the patient. The authors report this rare case of metastatic small cell lung carcinoma to the thyroid with literature review.
이화운,김유근,정우식,오은주,임헌호,노순아,반수진,최현정,김민선,김헌숙 부산대학교 환경문제연구소 2002 環境硏究報 Vol.20 No.-
In the view of the results investigated the effect of air pollutants that is emitted from a new generator facilities, the total estimated concentration which is the summation of a contributional concentration and observational concentration is much less than that of atmospheric environment criterion for the air pollutants. So we can predict that the operation of the new generator facilities with mitigation equipment don't seriously affect around environment. At the same time, we compared the contributional concentration of before mitigation equipment with that of after it to examine the decreasing amount due to mitigation equipment. The result showed that the concentration of SO2, NO2 and PM-10 is reduced to 25%, 30% and 26% of original value, respectively.