고령토로부터 알루미나 추출에 관한 연구(Ⅰ) : 황산에 의한 추출

유대선,윤종석,이희수 연세대학교 산업기술연구소 1990 논문집 Vol.22 No.1

The preparation conditions of alumina powder extracted by sulfuric acid were investigated. The raw material was domestic San-Cheong Kaolin. The experimental conditions which have an effect on the yield of alumina were varied as follows; the calcination temperature and time, the reaction temperature and time, and the acid concentration. The agglomeration of aluminum hydroxides precipitated by ammonia water was controlled by various drying methods. And the dried power was heated to obtain α-Al₂O₃for 1 hour at 1200℃. The yield of alumina was up to 58 percent under the optimum condition and its purity was 96.4 percent. The alumina particles prepared by the freeze drying method revealed narrower size distribution and less agglomerate than others.

고령토로부터 알루미나 추출에 관한 연구(Ⅱ) : 질산에 의한 추출

유대선,이희수,김정한 연세대학교 산업기술연구소 1990 논문집 Vol.22 No.2

The preparation conditions of alumina powder extracted from domestic San-Cheong Kaolin by nitric acid were investigated. The experimental conditions which have an effect on the yield of alumina were as follows ; the calcination temperature and time, the acid concentration, the reaction temperature and time, pH of the extracted solution, and particle size of the raw material. The aggolomeration of pseudo-boehmite precipitated by NH₄OH at pH 8 was controlled by various drying methods. α-Al₂O₃powder prepared by heating of the dried powder for 1 hour at 1200℃. Under the optimum condition, the yield and purity of α-Al₂O₃powder were 73.6 percent and 95.5 percent, respectively. The alumina particles prepared by the freeze drying method revealed narrower size distribution and less agglomerate than others. And impurities of the raw material which have an effect on the extraction of alumina were Kyanite and Anorthite.

전류 비유 모델에 의한 초등학생의 전류 개념 변화 분석

유병길,강인석,김병철,남만희,박선희,소하연,윤희정,이영아,이하룡,전병문,정승호 부산교육대학교 과학교육연구소 2000 科學敎育硏究 Vol.25 No.-

There exists a major impediment to learning electricity which may illuminate why direct presentation of scientists' ideas is too aggressive a strategy. This impediment lies in thinking that electricity is used up and in envisaging the light bulb as a consumer. This view is based on a powerful idea which summarises much of our experience; it declares that 'things get used up', 'you cannot get something for nothing', and 'intuitive thinking'. To replace this view with scientific view, we made the analogy model. It is suggested that the analogy model is more effective in teaching electricity circuits than conventional teaching method.

모발의 부위별 분석을 통한 Methamphetamine 남용자의 복용시기 추정에 관하여

유영찬,정희선,최화경,진원택,이한선 內務部 國立科學搜査硏究所 1996 國立 科學 搜査 硏究所 年報 Vol.28 No.-

추체 사대부 종양에 대한 개두술을 시행하지 않는 변형된 후경추체 경천막접근법 : Technical Note

유헌,정희원,양희진,김종선 대한신경외과학회 1999 Journal of Korean neurosurgical society Vol.28 No.3

제38회 국제법화학회 참석기

유영찬,박유신,정희선,이상기 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

청소년을 위한 교육 프로그램 개발·실시 및 평가에 관한 연구

계선자,이정우,김명자,박미석,송말희,유을용,김경아,정진희 대한가정학회 2003 Human Ecology Research(HER) Vol.41 No.8

The main goal of this program is to build a healthy adolescent culture by broadening the understanding of adolescents and recognition of the environment as well through the development of educational programs centering on the domains of peer relationships, intimacy in dating relationships and sex, leisure activities, and consumption life of adolescents. The program was carried out to 10 young boys and girls for two days/one night and the major findings of the effects of the program through a qualitative evaluation were as follows: First, the program provided adolescents with a proper opportunity to promote a sense of self-confidence through the self-reevaluation process. Secondly, the program provided adolescents with a chance to firmly recognize to become good friends with others though the enhancement of self-esteem, which helped them to build a healthy peer relationship. Thirdly, adolescents were able to promote their views on sex and sexual decision-making by acquiring a proper knowledge of intimacy in dating relationships and of sex, and by candidly expressing their own opinions on sex with instructors. Fourthly, the program provided adolescents with an opportunity to look back on their leisure life with family members which had been neglected thus far and to renew their recognition of active leisure activities. Fifthly, the program provided adolescents with a chance to reflect on their unplanned consumption life and to be firmly determined to refrain from impulsive purchasing and extravagance.

제2형 당뇨병 환자에게 적용한 표준진료지침이 혈당, 당화혈색소, 당뇨지식 및 재원일수에 미치는 효과

김희승,윤건호,유양숙,오정아,송민선,신미옥,김경희,송복례 대한당뇨병학회 2002 임상당뇨병 Vol.3 No.1

연구배경 : 당뇨병 환자의 평균 재원기간을 단축시키고, 제한된 입원기간 내에서 질적인 면과 비용효과성을 고려한 총체적인 건강관리체계의 필요성이 요구됨으로써 생겨난 것이 당뇨병 표준진료지침(Critical Pathway: CP)이다. 현재 개발된 당뇨병 CP를 통한 진료가 환자의 당뇨병에 관한 지식을 개선시키고 이에 따라 장기적으로 당뇨병 환자의 혈당조절이 개선되었다는 과학적인 검증은 당뇨병 CP를 여러 병원에 정착시키기이전에 반드시 선행되어야 할 과제이다. 이에 본 연구는 2000년 3월부터 1년간 강남성모병원에 입원하는 당뇨병 환자를 대상으로 현재 개발된 1주일 CP를 적용한 실험군의 혈당, 당뇨병 관련 지식 및 재원일수가 대조군에 비하여 차이가 있는지를 조사하였다. 방법 : 1주일 CP를 적용한 실험군은 내과병동에 입원한 당뇨병 환자 89명이었고, 대조군은 기타병동에 입원한 당뇨병 환자 22명이었으며 CP를 적용하지 않았다. CP를 적용하기 전인 입원시에 실험군과 대조군의 공복혈당, 식후 2시간혈당, 당화혈색소 및 당뇨관련 지식을 측정하였고, 퇴원 시에 실험군과 대조군에게 공복혈당과 당뇨관련 지식을 재측정하고 재원일수를 파악하였다. 그리고 두 군에게 퇴원 3개월 후의 공복혈당, 식후 2시간 혈당 및 당화혈색소를 조사하였다. 결과 : 1) 실험군의 공복혈당은 입원 시 238.7: 1) 실험군의 공복혈당은 입원 시 238.7mg/dL에서 퇴원 시 139.4mg/dL로 감소하는 경향이었으나 퇴원 3개월 후에는 150.6mg/dL로 약간상승하는 경향을 보였다. 대조군은 입원 시 251.5mg/dL에서 퇴원 시 136.2mg/dL로 감소하는 경향이었으나, 퇴원 3개월 후에는 219.3mg/dL로 현저히 증가하는 경향이었다. 2) 실험군의 입원 시 식후 2시간 혈당은 312.5mg/dL에서 퇴원 3개월 후 248.5mg/dL로 감소하는 경향이었다. 대조군도 입원 시 식후 2시간 혈당이 300.1mg/dL에서 퇴원 3개월 후 262.5mg/dL로 감소하는 경향이었으나 실험군보다 감소의 폭이 적은 경향이었다. 3) 실험군과 대조군의 입원 시 당화혈색소는 각각 10.3%와 9.7%로 유의한 차이가 없었으나,퇴원 3개월 후 실험군은 7.5%로 대조군의 9.1% 보다 유의하게 감소하였다. 4) 실험군의 입원 시 당뇨지식 점수는 실험군이 12.1점 대조군은 12.0점으로 유의한 차이가 없었으나 퇴원 시는 실험군이 15.5점으로 대조군의 14.6점 보다 높은 경향이었다. 5) 재원일수는 실험군이 8.4일로 대조군의11.0일 보다 유의하게 적었다. 결론 : 따라서 당뇨병 환자를 위한 CP는 재원일수의 감소뿐만 아니라 환자의 자가관리에 대한 체계적인 교육과 개선의 기회를 가짐으로써 장기적인 혈당 조절의 향상을 도모할 수 있는 효과적인 방법이라고 생각한다. Background: The aim of this study was to examine the effects of the critical pathway for the admitted patients with type 2 dia betes me llitus on glycemic control, the knowledge on the disease, and the length of hospital stay. Methods: 89 diabetic in-patients were applied with the 1 week critical pathwa which was consisted of intensive education program for self-management of diabetes me llitus such as glucose monitoring, excercise prescription, diet control, self-a djustment of the drugs and so on. The results were compared with 22 diabetic inpatients who were treated with conventional way. We assessed the effects of critical pathway on the degree of glycemic control, the knowledge on the disease, and the length of hospital stay. Results: Although fasting and postprandial 2 hours blood g lucose levels did not showed sta tistically significantd ifference between critical pathway group and conventional group on discharge , HbA1c was significantly decreased in critical pathwa group compared with the conventional group (7.5±1.8% vs 9.1±2.6%) on 3 months after discharge . Knowledge on the disease tended to increase in critical pathway group compared with the conventional group on discharge. The Length of hospital stay was significantly decreased in critical pathway group compared with the conventional group (8.4±2.8day vs 11.0±3.9da ) Conclusion: These results showed that critical pathway for the patients with diabetes mellitus might be a usefulway for improving the long term glycemic control through motivation, enhancing the knowledge on the disase as well as reducing the length of hospital stay.

개에서 발생한 신우신염 증례

유건우,이선희,임수정,박형진,김태신,송은식,송근호 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2009 動物醫科學硏究誌 Vol.16 No.1

A 6 years old Schunauzer dog (7.2kg, intact female) with history of hematuria for two days was referred to the Veterinary Medical Teaching Hospital of Chungnam National University. Complete blood cell count showed no significant abnormalities and serum chemistry profile showed increased phosphate profile. On urinanalysis, there was evidence of bacterial infection. On ultrasonographic evaluation, irregular renal contour and increased echogenecity, pelvic and uretral dilation, and thickening of urinary bladder wall were observed. Based on these finding, the dog was diagnosed as pyelonephritis. The dog was treated with antibiotics based on antimicrobial susceptibility test results, then successfully resolved after 8 weeks of treatment.

개 원발성 면역매개성 혈소판 감소증 증례

유찬,임수정,이선희,박형진,김태신,송은식,김덕환,송근호 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2009 動物醫科學硏究誌 Vol.16 No.1

A 13-year-old, castrated male, Maltese-dog was admitted to the Veterinary Medical Teaching Hospital of Chungnam National University with the history fo petechiae. On physical examination, she had petechiae and ecchymoses at her back, bilateral inguinal region, and inner part of ear pinna. CBC indicated neutrophilia and severe thrombocytopenia. A few platelets, no autoagglutination of RBC, and no spherocyte were observed. Coagulation profile demonstrated normal PT, and aPTT. No significant findings was not found on serum biochemical profile and electolytes test. FNA of a splenic mass which was found on the abdominal radiograph and sonograph demonstrated extramedullary hematopoiesis, Proteinuria was observed on urinarysis. Primary immune-mediated thrombocytopenia was diagnosed by ruling out of other underlying disease, severe thrombocytopenia, and response to immunosuppressive therapy. Prednisone and antibiotics were administered orally and parenterally, respectively. After altering prednisone to azathioprine, the number of platelets was recovered to normal range and petechiae and ecchymoses were improved.