滅菌市亂의 保存性

姜奉泰,李乙熙 진주산업대학교 1985 論文集 Vol.23 No.-

減菌乳의 保存性을 살펴 보기위해 減菌乳를 購入하여 1週間隔으로 脂肪含量 滴定酸度, pH, 比重, Alcohol test, Boiling test 및 細菌檢査를 本 大學 乳加工 實驗室에서 實施하였던 바 다음과 같은 成績을 얻었다. 1) 貯藏期間에 따른 脂肪含量은 上部는 增加하였고 下部는 減少하는 傾向이었다. 2) 比重은 上部는 減少하였고 下部는 큰 變化를 보이지 않았고 공히 基準置이내 였다. 3) 調査期間中 適定酸度는 큰 變化는 없었다. 4) Alcohol 및 Boiling test는 陰性이었다. 5) SNF는 上部에서 5週째를 除外한 다른 區에서는 점차 減少하였고 下部는 큰 變化가 없었다. 6) 調査期間中 一般細菌, 大腸菌, 好熱性細菌 및 好冷性 細菌은 자라지 않았다. This experiment were carried out to study the preservation of sterilized milk, which were standed the test by manufacturer. It were investigated into their bacteriological and physicochemical propertoris and bacteriological weekly, during a period of 5 week, in preservation at 7℃, 20℃ and 30℃. The test was executed at the Laboratory Dairy Product in Chin-ju National Agricultural and Forestry Junior College. The results obtained were as follows. 1. The contents of Fat make progress of the period were increased at the upper 250ml of milk, whereas decreased the lower 250㎖ of milk. 2. The specific gravity was decreased at the upper 250㎖ of milk, but it was not a little change at the lower 250㎖ of the milk. It was not increased up to the inedible level of the government standard. 3. The titrable acidity and Hydrogen-ion concentration of sterilized milk changed very slowly in all temperature condition. 4. The alcohol and boiling test was negative. 5. The percentage of solids-not-fat was decreased at the upper 250㎖ of milk with the exception the 5th week, and it was the similar pattern at the lower 250㎖ of milk. 6. The total, the coli-form, the thermoduric and the psychrophilic bacterial counts of sterilized milk during experimental period did not grew in all temperature conditions.

地黃잎의 給與가 離乳仔兎의 發育에 미치는 效果

姜奉泰,鄭鉉丞,郭鐘瀅 진주산업대학교 1968 論文集 Vol.2 No.-

地黃잎을 Chinchilla 種 離乳仔兎에 10%, 20%, 30%生草와 代置하여 各各 4頭에 給與하여 다음과 같은 結果를 얻었다. 1.增體量은 對照區에 比하여 10% 地黃잎 代置區는 有意的으로 우수하였으며, 20%, 30% 代置區는 不良하였다. 2.飼料利用性도 10% 地黃잎 代置區는 對照區보다 優良하였다. 3.嗜好性은 10% 地黃잎 代置區가 가장 우수하였으나, 20%, 30% 代置區는 對照區보다 不良하였다. 4.健康狀態는 모두 良好하였으며, 10% 地黃잎 代置區가 가장 활발하였다. 以上 本試驗의 結果로써 地黃잎 10% 代置가 仔兎의 成長에 有效함을 認定할 수 있었다. This experiment was conducted to determine the effect of Jiwhang`s leaf on weanling rabbits. Heaf of Jiwhang substitude with 10%(T_1), 20%(T_2), 30%(T_3) for grass in ration was fed with basal ration. The experimental results obtained were as follows; 1)In weight gain T_1 lot showed more gain (P.<0.05) than that in the control. T_2 lot, T_3 lot showed less gain than that in the control. 2)Feed efficiency of T_1 lot was also higher than that in any other lots. But T_2 lot, T_3 lot respectively showed less feed efficiency than that in the control. 3)T_1 lot was most palatable to rabbits. But T_2 lot, T_3 lot respectivly showed less palatability than that in the control. 4)All of the rabbits used in experimental period were in good health. T_1 lot was most vigorous. From the above mentioned results of this experiment it was estimated that the ration substituted with 10% of Jiwhang1s leaf was effective for rabbits.

자연산 및 양식산 농어의 영양성분 비교

강동수,배태진,하봉석 여수대학교 1998 論文集 Vol.12 No.2

The differences in the contents of nutritive components of meat were examined between wild and cultured sea bass. Total amino acid contents of the wild sea bass were higher than that of the cultured one. The main amino acids in the both sea bass were glutamic acid, aspartic acid, leucine and lysine. The wild sea bass contained higher amounts of glycine than in the cultured sea bass. Total free amino acid contents of the cultured sea bass were higher than that of the wild one. In composition of free amino acid, taurine was abundant, and glutamic acid, glycine, alanine and histidine were the major free amino acids. The contents of glycine, alanine and histidine in the wild fish were higher than those in the cultured one, while the content of taurine was lower. In the contents of nucleotides and their related compounds, IMP was dominant, and followed ADP, AMP, in order. The contents of nucleotides and their related compounds in the cultured sea bass were markedly lower than that of the wild sea bass. In fatty acid composition, C16:0, C18:1, C22:6, C16:1 and C20:5 fatty acids were abundant. The wild sea bass showed higher levels in C16:1 and C18:1 fatty acids than the cultured sea bass, while the cultured sea bass contained much amont of C22:6 fatty acid.

독성물질의 세포사 기전 및 세포사 유발물질의 검색법 개발에 관한 연구(Ⅰ) : 독성물질로 인한 파킨슨병 모델에서의 세포사 기전 연구 Study on the cell-death mechanisms of toxin-induced parkinsonism

강태석,김종민,서경원,김영옥,김준규,오재호,이윤동,김규봉,오정자,송연정,임종준,전범석,문전옥,최광식 식품의약품안전청 2000 식품의약품안전청 연보 Vol.4 No.-

MPTP 독성물질이 도파민성 신경세포에 선택적으로 작용하여 산화성 손상에 의한 신경세포사를 일으키는 것을 이용하여 파킨슨병의 동물모델을 만들고, 이를 통해서 아폼토시스를 비롯한 포사의 기전에 대한 연구 및 너코틴의 신경세포 보호효과 여부를 판정하는 실험을 병행하고자 하였다. 파킨슨꾐의 동물모델을 MPTf 독성 물질을 이용하여 확립하였으며, MPTP(30mgag, i.p.)를 투여한 후 1, 2,3, 4, 5일째 흑질 조직을 채춰하여 tarm로 박걸하여 tyrosine hydroxylase 면역조직화학염색을 수행하여 cell countif우한 결과, control은 57.635ce11s, 1일째 친.OfDells,2일째 57.9±6cells,3일릴 없.3±죠ells, 4일째 49.0츠3cells, 5일째 39.4±Scells료 4, 3일째 뚜렷한 신경세포 수의 감소를 보였다. 신경세포사 기전 규명을 위한 아폼토시스 분걱에서는 벼PTP 투여 후 1, 2, 3, 4, 5일째 조직을 채취하여 Hoechst staining, TUNEL staining을 수곡하였는데 양성 반응을 보인 신경세포는 관찰되지 않아. 아폼토시스로 인한 세포사가 관찰되지 않았다. bIPTP 파킨슨병 동물모델에서 nicotine 보호효과 탐색에 관한 실험은 nicat푸e 0.2mgAg을 5일 퐁안 투여 후 리『fP(30mgag)를 CS7Bt/6 마은스에 복강 내주사로 nicotine과 병용 투여한 후 1, 2, 3, 4, 5일째 뇌를 적출하땄다. 신경세포사가 뚜렷이 관찰되기 시작하는 4, 5일째의 신경세포 수의 감소 정도를 20. 30% 정도 약화시키는 경향을 보였으나, nicotine 보호효과에 대한 추가 실헝이 현재 수행 중에 있다. The cause of Parkinson's disease (PD) is largely unknown. However, free radical toxicit? may plaf a role ip. the degeneration of substantia nigra, which is the Hajorfocus of pathological damages in PD. Recently, a neuroprotective effect of nicotine in PD has been suggested. Therefore, the mechanism of neurodegenerafion and protective potential o( nicotine in PD were investigated in the experimental modeB of Pll using a neurotoxin, C57BL/6mice were administered with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP, 30 mg/kg,j.p.). The degree of neurodegenerafion was determined by immunohistochemical stainiHB oftyrosine hydroxylase (TH). TH-positive cells on nigral sections were found 56.0 ±4, 57.9 ±6,52.315ce11s, 49.0±3cells, and 39,4±Scells at days 1, 2, 3, 4, 5, respectively (controls : 57.6±Scells). Hoechst and TUNEL staining showed no evidence of apoptosis. The exandnation on themice co-adrunistered with nicotine(0.2mgAg) and MPTP(30mgag) revealed a tendency ofnicotine protective effects. At days 4 and 5, the degree of TH-positive cells was decreased by20-30%, In corclusiffn, the role of apoptosis was not evidenced in this MPTP modeB of PB.The possible proteccon by nicotine should be elucidated with further studies.

진자검사시 근육 길이의 변화를 이용한경직의 정량적 측정

조강희,채진목,서정수,김태민,김봉옥,임현균,이영신 大韓再活醫學會 2000 Annals of Rehabilitation Medicine Vol.24 No.4

Modal SI 기법 적용을 위한 최적 측정위치 선택

강태우,권순정,김용현,신수봉 東亞大學校 建設技術硏究所 2001 硏究論文集 Vol.25 No.2

In applying a modal system identification with a limited number of measuring degrees of freedom, the selection of optimal sensor locations (OSL) is critical for a good identification. The current research proposes a new OSL method applicable to a modal system identification (SI) and compares it with a widely used OSL method. The proposed method utilizes the sensitivity of eigenvectors with respect to the structural parameters. A simulation study for a tower structure has been carried out to demonstrate the efficiency of the proposed method. Through the simulation study, the influence of OSL on the structural parameters estimated by a S1 method are investigated.

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.

原料乳의 貯藏中 溫度水準에 따른 品質管理에 관한 硏究

姜奉泰 진주산업대학교 1976 論文集 Vol.14 No.-

本 試驗은 各溫度 條件下에서 原料乳의 保存性을 糾明하고저 晉州 근교에서 飼育하고 있는 乳牛 130頭에서 搾乳한 原料乳를 5℃ ,15℃, 30℃에서 24時間 保存하면서 酸度測定, Alcoloholtest, Methylen blue reduction test, 等을 通해서 다음과 같은 結果를 얻었다. 1. 滴定酸度는 5℃에 保存할대 機械搾乳는 12時間 손착유는 20時間 混合乳는 16時間 15℃에 保存 할 때는 各 區 供히 12時間 30℃에서는 손착유 混合유는 4時間 保存이 可能하였다. 2. Alcohol test 結果는 5℃에서는 손착착 機械搾유 混合유 供히 24時間 以上 保存할 수 있었고 15℃에서는 손착유 및 混合유가 20時間 機械搾乳區는 16時間 30℃에서는 4시간 程度 陰聲을 나타냈다. 3.Methylene blne reduction test 結果를 보면 試料는 5시간 30分의 지속시간을 나타내고 있고 5℃에서는 各區 供히 20시간 保存이 可能했으며 15℃에서는 손搾유와 混合區는 20시간 機械搾유區는 16시간 保存이 可能했으며 30℃에서는 供히 8시간程度 新鮮度를 유지했다. 4. 以上의 結果로 原料유는 5℃에서 24시간 15℃에서 16시간 30℃에서는 4시간 經過시까지 新鮮度를 계속 유지하였다. This study was accomplished to fine out the degree of temperature effects on preservation of raw milk. The milk was tasted the controlled temparatures 5, 15, and 30℃. The milk was drawn from 130 Holstein kept in Jin Ju area and was Preserved for 24 hours in the laboratory. The results of the titratable Acidity. Alcohol test, Methylen blue reduction test, were as follows; 1. The titratabIe acidity was preserved under the inedible level of goverment standared: 12 hours in milk by milk machin, 20 hours in milk by milk-men and 16 hours in mixed milk at 5℃, whereas 4 hours in milk by Milk-men and mixed milk at 3O℃. 2. The results of the alcohol test indicated negative: 2O hours in milk by milk-men and mixed mi1k at 15℃ whereas 16 hours in mailk by milk machine, 24 and hours in every milk method 5°and 30℃ 3. The methylen blue reduction test showed that milk maintained it's freshness, 5;30 hours in test sample, 20 and 8 hours in every milk method at 5°and 30℃, 20 hours in milk by milk-men and mixed milk at 5℃ whereas 16 hours in milk by milk machine,4. The raw milk taken milk collecting center in Jin Ju was preserveled under the inedible level of govermen standarded; 24, 16 and 4 hours in every milk method 5,°15°and 30℃ respectivily.

흰쥐 두힘살근 지배신경축 규명에 관한 연구

강태천,이흥식,이인세,서제훈,이봉희 대한해부학회 1997 Anatomy & Cell Biology Vol.30 No.6

움직임 예측을 위한 비트패턴을 이용한 고속 워핑 예측

강봉구,윤태승,곽내정,안재형 충북대학교 컴퓨터정보통신 연구소 2002 컴퓨터정보통신연구 Vol.10 No.2

본 논문에서는 비트패턴을 이용한 고속 워핑 예측을 제안한다. 워핑 예측은 이웃한 노드들의 움직임 벡터에서 움직임 정보를 가져오는 공간적인 의존성 때문에 최적의 움직임을 찾기 위해서는 반복적인 탐색을 요구한다. 반복적인 탐색에 의해 발생하는 연산량의 증가는 워핑 예측의 사용을 저해하는 큰 이유 중의 하나이다. 본 논문에서 제안한 방법은 비트패턴을 이용해서 움직임 여부를 판단한다. 움직임이 없는 영역에서의 의미 없는 움직임 예측을 제거하고, 움직임이 있는 영역에서만 워핑 예측을 수행함으로써 빠른 움직임 예측이 가능하게 된다. 제안된 방법으로 실험한 결과 기존의 워핑 예측을 수행했을 때보다 성능은 근접하면서도 연산량이 75% 이상 감소하였다. In this paper, we propose a fast warping prediction using bit-pattern. Because of the spatial dependency between motion vectors of neighboring node points carrying motion information, the optimization of motion search requires an iterative process. The computational load stemming from the iterative search is one of the major obstacles for practical usage of warping prediction. The motion estimation in the proposed algorithm measures whether the motion content of the area is or not, using bit-pattern. Warping prediction using the motion content of the area make the procedure of motion estimation efficient by eliminating an unnecessary searching process. Experimental results show that the proposed algorithm can reduce about 75% of iterative search while maintaining performance as close as the conventional warping prediction.