凍結明太肉의 貯藏中에 일어나는 理化學的變化(第1報) : 明太肉에 對한 아미노酸, 有機酸 및 糖類의 貯藏效果 Preservative Effects of Some Amino Acid, Organic Acid and Sugars on Alaska-Pollack Fillet

韓南珠,金文基,權泰鳳,吳成基 慶熙大學校 1980 論文集 Vol.10 No.-

The effects of sugar (D-sorbitol, D-xylose), organic acid (Na-citrate) and amino acid (monosodium glutamate) on the physicochemical properties of frozen "Alaska-pollack" fillet containing 500mg% of sucrose at 15℃ were studied by the quantitative measurements of myofibrillar Mg^2+ -ATPase activity, trimethylamine-N, total protein, pH and textural variations with the lapse of time. The results were compared with each other at different concentration levels (125-500mg%). 1. The more higher the concentration of additives, were observed the more higher myofibrillar Mg^2+ - ATPase activity and pH value. In contrast, however, trimethylamine-N content was decreased with the concentration increase. 2. All the "Kamaboko" groups containing additives at different concentration levels maintained almost similar elasticity. On the other hand, they were not only easily crumbled but also markedly decreased hardness, cohesiveness and gumminess with the lapse of time. 3. The D-sorbitol showed inferior textural characteristics to other additives, and D-xylose gave heavy color during the "Kamaboko" processing. 4. D-sorbitol groups increased cohesiveness and gumminess, respectively, with the concentration Increase. On the other hand, hardness was decreased in the sodium citrate groups.

凍結明太肉의 貯藏中에 일어나는 理化學的變化 (第2報) : 明太肉에 對한 核酸類의 貯藏效果 Preservative Effects of Some Nucleotides on Alaska-Pollack Fillet

韓南珠,權泰鳳,吳成基 경희대학교 부설 식량자원개발연구소 1978 硏究論文集 Vol.1 No.-

The effects of nucleotides (Na-GMP, Na-IMP, Na-UMP, 5-50 ㎎%) on the physicochemical properties of frozen Alaska-pollack fillet containing 500㎎% of sucrose at 15℃ were studied by the quantitative measurements of myofibrillar Mg^(2+) - ATPase activity, trimethyl amine-N, total protein, pH and textural variations with the lapse of time. The results were compared with those of D-sorbitol, D-xylose, sodium citrate and monosodium glutamate at different contration levels (125 ㎎% - 500 ㎎%) 1. The more higher the concentration of additives, were observed the more higher myofibrillar Mg^(2+) - ATPase activity In contrast, however, trimethylamine-N content was decreased with the concentration increase 2. All the "Kamaboko" groups containing at different concentration levels maintained almost similar elasticity On the other hand, they were not only easily crumbled but also markedly decreased hardness, cohesiveness and gumminess with the lapse of time 3. The Na-UMP groups showed inferior textural characteristics to other additives, but Na-IMP groups were superior 4. The Na-IMP groups increased hardness, cohesiveness and gumminess However, the Na-GMP groups increased hardness and gumminess with the concentration increase On the other hand, hardness was decreased in Na-UMP groups 5. Nucleotides showed superior protective effects of myofibrillar protein in frozen Alaska-poliack fillet over D-sorbitol, D-xylose, sodium citrate and monosodium glutamate And it appears that nucleotides would be promising additives for the quality improvement of a variety of fish products

PLD 박막의 물리적 성질

한용진,조봉균,정재훈,이수빈,박해윤,이태기,채희백,홍진수 순천향대학교 기초과학연구소 1998 순천향자연과학연구 논문집 Vol.4 No.2

Thin amorphous carbon films were deposited by a Q-switched Nd;YAG 532nm with beam power density of ?? on the high purity graphite (99.7%). The pressure of vacuum chamber was ?? Torr. In order to estimate the quality of the Pulsed Laser Deposition films one of the most important optical properties, bandgap energy, was characterized by transmission and reflection in the range of the visible, and an optical direct bandgap energy of 2.45eV and indirect bandgap energy 0.36eV were obtained. Surface morphology of amorphous film was investigated by AFM (Atomic Force Microscopy). Its surface roughness is 70nm. Comparing our results with the published values in the literature we have confidence that our films show the good quality for optical properties.

허혈성 심질환에 있어서 아데노신 급속 정맥투여후 관동맥압의 변화에 관한 연구

봉종대,오종용,배성한,신원용,김철현,이광희,최태명,현민수,김성구,권영주 순천향의학연구소 1998 Journal of Soonchunhyang Medical Science Vol.4 No.2

Background: Adenosine interacts with A1 receptors present on the extracellular surface of cardiac cells, activating K+channels in a fashion. It produces coronary vasodilatation and AV nodal block. The half-time is one to six second and has ultra-short action. In ischemic heart disease, fractional flow reserve(FFR) can be achieved safely with intravenous adenosine infusions at a rate of 150㎍/kg/min which cause maximal coronary hyperemia. Purpose: We investigated the patients who have had ischemic heart disease(n=8). After adenosine intravenous administration(150㎍/kg/min), the effect cause maximal hyperemia of coronary artery. During peak maximal hyperemia, we reported clinical findings, coronary hemodynamics and electrocardiogram findings. Methods: After diagnostic coronary angiography and left ventriculography, catheter was advanced into the ostium of coronary artery. We investigated coronary hemodynamics such as systolic coronary artery pressure, diastolic coronary artery pressure, mean coronary artery pressure and heart rate. To assess the use of adenosine for determination of fractional flow reserve, hemodynamics and electrocardiogram were measured at basal state and during peak maximal hyperemia. Results: Symptoms developed 1.5-2 minute after adenosine intravenous administration and each symptom disappeared 2-2.5 minute after adenosine administration. Two patients represented asymptomatic appearance and six patients complained of flushing, chest pain, palpitation and headache. In eight patients with ischemic heart disease, 1.5 minute after venous administration of 150㎍/kg/min of adenosine, coronary artery pressure decreased and heart rate increased significantly. Conduction abnormalities after administration of 150㎍/kg/min of adenosine were transient 2nd degree AV block 2 cases(25%). Conclusions: Adenosine is a potent ultra short-acting vasodilator. Although coronary artery pressure decreased and heart rate increased and mild cardiovascular symptoms occurred after continuous infusion of 150㎍/kg/min of adenosine, it is useful as an agent for determination of fractional flow reserve.

비강비호즈킨 림프종의 전산화단층촬영 소견 : CT Features

노태연,백호길,원종부,박성호,박오봉,백승국,신미정,김봉기,최한용 침례병원 1998 浸禮病院學術誌 Vol.14 No.-

기업ㆍ민간 스포츠센터 소비자의 이용만족도 비교 분석

서봉한,노영태,이상봉,이영덕,정용제,박병주 부산대학교 체육과학연구소 2000 體育科學硏究所 論文集 Vol.16 No.-

The purpose of this study was to analyze differences between satisfaction of members who attend sports center managed by enterprise and those of members who attend sports center managed by private. We hoped through these analysis, consumer could get useful date for choosing sports center and managers could gets data for establishing effective marketing strategy. The objective of this study was 500 members of sports center managed by enterprise and by private in city of Ulsan. Questionnaires were completed through self-administration. We used SPSSWIN 8.0 to analyze gathered data Chi-square test was used for analyzing conditions of members. All statistical data were tested with p〈.05. The result were as follows. 1.Satisfaction of facility and service 1) According to sex, men showed higher satisfaction with enterprise center. In detail, men showed higher satisfaction with enterprise center in exercise facility, dressing room, shower room and sanitation. 2) According to age, 30's show the highest satisfaction with enterprise center in all items but in parking lot. In the comparison of whole mean, 50's showed the highest satisfaction with both enterprise and private center. 3) According to education level, more than college graduation, college student or dropout and high school graduation showed their satisfaction in turn in enterprise center and college student or dropout, more than college graduation and high school graduation showed their satisfaction in turn in private center. In the comparison of whole mean, the satisfaction of enterprise center was higher than that of private center. 4) According to income, all groups but group(100-149 million won) showed higher satisfaction with enterprise center in the comparison of whole mean. 5) According to the type of job, salary worker and functional occupation showed higher satisfaction with enterprise center and educational occupation and owner of small business or store showed higher satisfaction with private center. 2.Satisfaction of offered service 1) According to sex, men showed higher satisfaction with both centers. 2) According to age, in the comparison of whole mean, 50's showed the highest satisfaction with both enterprise and private center. 3) According to education level, more than college graduation, college student and high school graduation showed their satisfaction in turn with both centers. In the comparison of whole mean highschool graduation and college graduation showed the highest satisfaction with enterprise center and college student or dropout showed the highest satisfaction with private center. 4) According to income, all groups but the group(250-299 million wons) showed higher satisfaction with enterprise center in the comparison of whole mean. 5) According to the type of job, salary worker and functional occupation showed higher satisfaction with enterprise center and worker in special jobs and owner of small business or store showed higher satisfaction with private center.

유지혈액투석을 받는 말기신부전환자에서 항우울제 투여가 우울 및 영양지표에 미치는 효과에 대한 예비적 연구

이태병,한창환,손봉기 대한신경정신의학회 2000 신경정신의학 Vol.39 No.6

연구목적 : 만성질환을 겪고 있는 환자들이 정서상태에서 가장 흔한 문제는 우울증이며, 많은 연구자들이 만성신부전으로 혈액투석을 받고 있는 환자들에서 높은 빈도의 우울증을 보고하고 있다. 우울증은 치료 결과 (medical outcomes)에 부정적 영향을 나타내어 궁극적으로는 생존에 영향을 미친다. 말기 신부전 환자에서 치료 결과의 예측 인자로써 영양상태의 부족은 심각한 문제이며 따라서 영양상태를 저하시키는 요소를 추적하는 것은 중요한 일이라구 할 수 있다. 그 중 하나가 우울증으로 우울증의 개선이 혈액투석을 받고 있는 말기 신부전 환자의 영향 상태에 미치는 영향을 밝힘으로써 혈액 투석 환자에 대한 정신과적 개입을 포함하는 새로운 치료 모델을 제시할 수 있을 것으로 기대하여 본 연구를 실시하였다. 방 법 : 한림대학 부속 춘천성심병원에서 혈액투석을 받고 있는 말기 신부전 환자 중 우울 증상을 보이는 30명을 대상으로 하였다. 우울증상의 평가는 Hamilton depression rating scale(HDS)과 Zung's self-rating depression scale(SDS)을 이용하였다. 영양상태 지표로는 혈청 Kt/V, nPCR,albumin농도, BUN, 세포내액, 세포외액, 체지방량, 체지방률, 요위-둔위비, 제지방량, BMI를 측정하였다. 항우룰제는 paroxetine을 8주간 투여하였다. Windows용 SPSS version9.0을 이용하여 우울정도와 영양 척도사이의 상관관계를 알아보고 항우울제 투여 전후의 차이를 비교 분석하였다. 결 과 : 기초 조사에서 설문지에 응한 환자 (N=40)의 평균 우울점수 HDS와 SDS로 측정하였을 때 각각 12.35±7.45와 59.43±11.89이었으며 이중 경도 이상의 우울증상을 보이는 집단은 각각 75%와 80%로 나타났다. 8주간의 항우울제 치료후 HDS점수는 유의한 수준(p<.05)의 우울증상 호전을 보이고 있었다. 이와 동반하여 영양상태 지표들 중 nPCR,혈청albumin농도, BUN, 세포내액, 세포외액, 요위둔위비에서 유의한 수준(p<.05)에서의 개선을 보였다. 결 론 : 말기 신부전 환자의 생존과 중요한 관계인 영양지표들은 우울증상의 호전과 함께 개선되는 것을 볼 수 있었다. 따라서 혈액투석중인 말기 신부전 환자에서 우울치료가 정서적인 안정뿐만 아니라 투석치료 결과에도 이익이 될 것으로 생각하지만 보다 정확한 결론을 위해서는 더 많은 대상과 장기적인 추적관착, 그리고 placebo를 이용한 이중맹검사법의 적용이 필요할 것이다. Objectives : Depression is a common affective problem in patients with chronic medical illness. It has been well known that depression gives negative influence to medical outcome in patients with chronic renal failure(CRF). The purpose of this study is to reveal the effects of antidepressant treatment on depressive symptoms and nutritional indexes. We hope that this study could be a help to make a new model in the treatment of patients with CRF. Methods : For this study, 30 depressive patients with CRF on maintenance hemodialysis were included. As affective variables, Hamilton Depression Rating Scale(HDS) and Zung's Self-Rating Depression Scale(SDS) were used. Medical outcomes were assessed with the following nutritional parameters : Kt/V, normalized protein catabolic rate(nPCR), serum albumin concentration, BUN, intracelluar fluid(ICF), extracellular fluid(ECF), lean body mass, fat mass, percent body fat, waist-hip ratio(WHR), and body mass index(BMI). Paroxetine, one of the SSRI classes, was administered as antidepressant for 8 weeks. For statistical analysis paired t-test was used for each variables. Results : The prevalences of depression were 75% from HDS and 80% from SDS(N=40). The mean±SD of HDS and SDS score were 12.35±7.45 and 59.43±11.89 respectively. HDS score significantly decreased(p<.05) after antidepressant treatment for 8 weeks. There was a significant increase (<.05) in such nutritional parameters as nPCR,serum albumin concentration, BUN,ICF,FCF, and WHR. Conclusion : Both nutritional indexes and depressive symptoms improved after 8 weeks of antidepressant treatment. We suggest that improvement of depressive symptoms should contributre to improved nutritional indexes. Long-term follow up and placebo-controlled double blind study are firmly required to confirm the results of this study.

濕式法에 依한 γ-MnO_2 製造에 關한 硏究(第2報) : Purification of Manganes Oxides by Acid Treatment

金鳳杰,姜泰範,韓正洙 慶熙大學校 1982 論文集 Vol.11 No.-

Studies on the effect of reaction temperature, reaction time and concentration of acid on the purification of manganese oxides was conducted to manufacture γ-MnO₂ available as dry cell depolarizer by wet process. The results obtained were follows: 1.When oxidized the precipitates of OH￣/Mn^++ mole ratio 2.2 by aeration at 13℃ for 6 hours, MnO₂content obtained 89.99%, which was identified as crystalline γ-MnO₂by X-ray diffraction analysis. 2. When manganese oxides was treated at 70℃ for 2hrs with 30% H₂SO₄and 30% HNO₃, the highest content, of MnO₂was obtained as 96.90% and 96.60%, respectively, which was identified as crystalline γ-MnO₂by X-ray diffraction analysis and different thermal analysis.

정지영상 압축을 위한 이진적응에 관한 연구

김향태,위승정,정재영,최호진,최봉한,이웅기 조선대학교 통계연구소 1999 統計硏究所論文誌 Vol.1 No.1

대용량 저장장치의 출현, 컴퓨터 성능 및 초고속 망의 급속한 성장, 디지털 필름스캐너의 성능 향상 및 비용 감소 덕분에 디지털 형태로 영상을 다루기 위한 요구가 점차 증대되는 추세이다. 디지털 영상은 항상 고품질을 유지해야 하므로 화소 당 비트를 높게 할당하는데 이때 소요되는 방대한 비트 수를 효과적으로 감소시켜 저장용량 및 대역폭을 줄이기 위해서는 효율적인 영상 압축이 요구된다. 본 눈문은 디지털 영상의 압축을 위한 새로운 이진적응 방식을 제안한다. 먼저 변환된 예측오류를 얻기 위해 적응예측을 하고, 모델 템플리트로부터 적당한 예측오류 값 영역을 하나의 context영역이 되도록 하는 방식으로 부호화에 적절한 수의 context 영역을 결정한다. 그리고 부호화 효율을 개선하기 위해 개별적인 context 영역에서 부호화 될 예측오류가 나타날 확률을 근접하게 추정한 후, 고 빈도 예측 심볼 집합을 이진적응에 적용하여 부호화의 효율을 개선한다.

공작 기계의 신뢰성 평가를 위한 웹 기반 해석 프로그램 개발

강태한,김봉석,이수훈,송준엽,강재훈 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-

Web-based analysis programs for reliability assessment of machine tools were developed in this study. First, the reliability data analysis program was developed to search for failure rate using failure data and reliability test data of mechanical part. Second, failure mode analysis was developed through performance tests like circular movement test vibration test for machine tools. This analysis program shows correlation between failure mode and performance test result. Third, tool life was predicted by correlation between flank wear and cutting time, using the extended Taylor tool life equation in turning data and the equivalently converted equation in order to apply ball endmill data to Taylor tool life equation in milling data. All the information related to input and result data can be stored in theses programs.