대두 식이섬유를 이용한 특수 영양식품의 유효성 평가

한재흠,이균희,손현수,이윤복,박점선,오만진 충남대학교 농업과학연구소 2008 농업과학연구 Vol.35 No.1

In the development of enteral foods for the patients with diarrhea, soybean hull, by-products of soybean processing, was used to prepare crude dietary fiber extracts (soybean hull fiber, SHF). Total dietary fiber content of SHF is 85% and their composition are 86.1% cellulose, 8.1% hemi-cellulose, and 4.7% lignin. The effects of SHF on the prevention of diarrhea were studied in animal. Spraque-Dawley (SD) rats were fed AIN93G diets containing 5% dietary fiber for 3days simultaneously inducing diarrhea with the phenolphthalein Mg citrate solution. On day 4, feces were collected at different time point. Dietary fibers used for the animal study were SHF, soybean cotyledon fiber (SCF), psyllium husk fiber (PHF), and chicory fiber (CF). α-cellulose was used as a control. Body weight gain, calorie consumed and food efficiency ratio among the experimental groups were not different. However, water content in the feces of SHF group was significantly lower by 10%, compared with other groups at 24hrs. time point. This effect was even greater in the feces collected later than 24 hrs. time point. SHF seems to have a greater effects on slow the symptom of diarrhea. Based on the previous results, enteral food enriched with SHF were prepared and its effect was compared with other commercially available products from domestic or imported ones. Weight changes among experimental groups were not different, but the moisture content of feces consumed SHF enriched products were lower than that of other products. Approximately 10% decrease in water content was observed from feces collected at 24 hr time point. According to the sensory evaluation, overall acceptability of the enteral food enriched with SHF was 3.24 out of 5 indicating that taste of this product is acceptable. 대두가공에 부산물로부터 얻어지는 대두 식이섬유를 이용하여 설사환자를 위한 경장 영양 식이를 개발하기 위하여 쥐에게 투여한 후 체중증가율, 변의 수분감소, 사료효율 등을 측정하여 다음과 같은 결과를 얻었다. 대두피 중의 식이섬유함량은 85% 이었고 cellulose 가장 높았으며 hemi-cellulose, lignin의 순 이었다. 대두 식이섬유가 대조구에 비하여 체중 감소율은 약간 낮았고 사료효율은 약간 높았다. 대두 식이섬유를 섭취시킨 쥐가 치커리 식이섬유, 차전자 피에 비하여 24시간 후의 변의 수분함량은 10% 낮았다. 대두 식이섬유를 첨가한 경장영양식이로 사육한 쥐의 체중변화와 사료효율은 3제품 간에 차이가 없었으나 다른 하나의제품은 대조군에 비하여 낮았다. 대두 식이섬유를 이용하여 가공한 경장영양식이 다른 상업용 제품에 비하여 실험쥐의 변 수분함량은 10% 이상 낮았다.

일정 외란을 갖는 이산 시스템을 위한 최적제어기의 설계

한만춘,이상재 연세대학교 산업기술연구소 1982 논문집 Vol.14 No.2

Linear optimal regulators for finite-dimensional linear time-invariant discrete systems with constant disturbances are designed using the linear quadratic optimization theory. Pseudo-inverse, which minimizes the effect of disturbances in the output, is introduced to determine the feedforward gain of feedback and feedforward controllers. The performance indices of linear optimal regulators and the overshoots and settling times of the responses are compared when weighting matrices are changed. When feedback and feedforward controllers are employed in the model, the effect of constant disturbances in the output is reduced effectively as compared to the case of linear optimal regulators.

터보 차져와 인터쿨러를 장착한 디젤기관의 시뮬레이션 연구

한영출,백두성,류규현,오용석,박만재 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.4

Studies on the turbocharger itself or various aspects generated from turbocharged engine have been made. However, only a few researches have been made on the performance for the natural aspirated engine equipped with the turbocharger and the intercooler. In this study, the performance prediction program based on turbocharger theory is developed for simu-lation which may reduce the cost and the trial-and-error time. The program is verified with the experimental results for 11,000cc diesel engine with the turbocharger and the intercooler. Also, various factors which are invisible in experiment are predicted using this program.

비최소 위상 시스템에 대한 적응 선형 2차 가우시안 제어기

한만춘,고재원,지승도 연세대학교 대학원 1985 延世論叢 Vol.21 No.4

This paper deals with the design of an adaptive linear-quadratic Gaussian controller to achieve regulation and tracking for non-minimum phase systems represented by a discrete single input-output stochastic state equation including white noise with a Gaussian distribution function. The parallel adaptive structure proposed by Landau has been adopted and an identification algorithm is used to obtain an unbiased estimation of the parameters. Applicability of an adaptive linear-quadratic Gaussian controller and the influence of each of the constants needed in the adaptation algorithm have been investigated. It is shown that the adaptive linear-quadratic Gaussian controller can achieve the fast adaptive control, when the system has the reference signal with a short period and abruptly varing parameters. With respect to white noise, this paper can be considered an extents of adaptive linear-quadratic controller proposed by Samson.

DOC의 K-7 Mode에 의한 배기가스 저감에 관한 연구

한영출,백두성,오용석,박만재,박귀열,류규현 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.3

With the significant growth of the number of vehicles, environmental problems is raised. NOx, SOx, and PM emissions in diesel powered vehicles are larger than that in gasoline, because the development of pollutants reduction techniques has no: been yet achieved. So it is need to develop after-treatment or to convert into alternative fuel to satisfy emission regula-tion. Among the after-treatment systems to reduce the diesel emissions, studies with diesel oxidation catalyst(DOC) are done greatly. In this study using DOC, reduction efficiency with the change of temperature and catalyst loading was calculated through measurements of CO, HC, PM, and SOx.

데이터 品質 管理 方案 硏究

이재범,한만호 서강대학교 경영학연구원 2004 서강경영논총 Vol.15 No.1

저품질의 데이터는 잘못된 의사결정을 초래하여 중요한 사업 기회를 놓쳐버리게 하거나 때로는 기업의 존폐 문제에 까지 영향을 미칠 수 있다. 대부분의 기업들은 데이터 품질 향상을 위한 전문 담당자를 배치하지 않고 있으며 신시스템 구축이나 데이터웨어하우스(DW), 고객관계관리(CRM) 구축 시 일시적인 데이터 정제(Data cleansing)를 실시하는 정도에 그치고 있으며, 데이터 품질의 중요성을 인지한 기업이라도 데이터 저품질로 인한 사업기회의 상실과 경제적인 손실이 가시적으로 당장 사업에 타격을 주는 것이 아니기 때문에 데이터 품질 관리에의 투자를 마지막 순위에 두는 경향이 있다. 본 연구는 먼저 데이터 품질 관리에 대한 정의를 정확히 하고 이를 기반으로 하여 국내 데이터 품질 관리의 실태를 파악한 후에 데이터 품질관리의 요소를 크게 데이터 품질 평가, 데이터 품질 관리 방법론, 데이터 품질관리 통제로 나누어 체계적인 데이터 품질 관리 방안을 연구하도록 한다.

β-Carotene과 알코올을 섭취한 쥐의 혈액 성분변화의 상관관계

고재웅,조만희,이상한,우기민,염윤기,김창세 순천향의학연구소 2000 Journal of Soonchunhyang Medical Science Vol.6 No.2

The study was carried out to investigate the effects of dietary carotenids and β-carotene on the hematological changes caused by alcohol administration into the rats. The results were analyzed using several statistical methods; SPSS computer program for measuring the mean values and standard deviations, one way ANOVA for the test of significance, Duncan method for post HOC multiple comparison, and Pearson method for measuring the correlation coefficient. The following are the conclusion from those statistical analysis. 1. ALB and TB were shown to have the most significant correlation among the blood compositions f개m the basic dietary groups. 2. BUN and CHO were shown to have the most positive correlation among those from the carrot-fed groups. 3. CA and AG were shown positively correlated, and CHO and IP negatively correlated, respectively among those from the cheese-fed groups. 4. AP was shown positively correlated among those from the alcohol-administrated groups. 5. CHO, CA and BUN were shown positively correlated, and CA was negatively correlated among those from the β-Carotene -fed groups. 6. TB and TP were not affected by the correlations between the blood composition from all the experimental groups.

손바닥 선인장의 열매를 이용한 침출주 개발

이재우 ; 한만덕 ; 정수현 김천대학교 2005 김천대학교 논문집 Vol.26 No.-

Development of Liquor Using Fruit of Opuntia ficus-indica var. saboten

구리의 전기석출시 젤라틴이 물성에 미치는 영향

신석재,강현춘,안형환,강안수,김용렬,한성만,이한섭 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-

In the electrodeposition of copper foil for preparing printed circuit boards, a little amount of gelatin as a addition agent has been used for the better characteristics of a coat of electroplating. Gelatin modifies the physical properties such as mechanical strength, matte-side roughness, ultimate tensile strength(U.T.S), and elongation of copper foil, furthermore gelatin have influence on the structure of electrodeposits and the cathode polarization. The electrolyte used was of a composition; CuSO₄·5H₂O 300g/ℓ, H₂SO₄ 100g/ℓ, NaCl 10 ppm as a brightner, and was gelatin 0-7 ppm as a addition agent. Current density was 50 A/dm², and the temperature of electrolytic bath was 50 to 52 ℃. Experiments showed that the optimum gelatin concentration was 5 ppm with the consideration of the numbers of electrodeposited nuclei. And the nuclei numbers was sharply increased under 5 ppm, but was almostly constant above 5ppm. Average matte-side roughness by Surfcorder was gradually increased with the increasing gelatine concentration up to 2 ppm, and maximum roughness was observed at 2ppm. The roughness showed gradual decrease within the concentration range of 2 to 4 ppm, and was almost constant above 4ppm . Within the gelatine concentration range of 0 to 7 ppm, as the concentration increased, UTS was increased and elongation was decreased logarithmically. Also, in comparison between UTS and elongation, gelatin was identified as an addition agent acting inversely.

빈도별 홍수량에 따른 댐 상ㆍ하류의 유출 변화 분석

김재한,정상만 공주대학교 방재연구센터 1998 공주대학교 방재연구센터 논문집 Vol.2 No.-

댐의 상하류에서 유출량 분석은 침수 가능성을 예측하기 위하여 매우 중요하다. 본 연구에서는 섬진강다목적댐을 중심으로 상.하류 주요 지점에 대하여 홍수량을 산정하였다. 댐 상류에 대하여는 HEC-2를 이용하여 수면 곡선을 계산하여 배수 영향을 분석하였다. 배수 영향은 섬진강 본류에서는 댐으로 부터 상류 35KM지점까지 발생하였고 주요 지류인 추령천 및 옥녀동천의 경우는 각각 합류점에서 상류 11KM, 5.4KM까지 배수 영향이 발생하였다. 댐 하류는 홍수 추적을 실시하여 섬진강댐에서 적성수위표 지점까지의 하도구간에 대하여 섬진강댐 방류조건에 따라 홍수량 및 홍수위를 산정하였다. 결과 분석에 의하면 적성수위표 상류 19.92KM 지점의 제방이 가장 취약한 것으로 나타났다. 현재 계획하고 있는 제방이 축조될 경우 섬진강댐의 방류량이 1,530m³/sec가 되어도 제방의 월류는 발생하지 않는 것으로 분석되었다. Flood flow analysis upstream and downstream of the reservoir for the different flood frequencies is very important for predicting the flood inundation. This study has been focused on estimating the runoff at the major location upstream and downstream of the Sumjingang multipurpose dam. To evaluate backwater effects upstream of the dam, water surface profiles have been estimated by the HEC-2 computer program. The results show that the back water effects on the mainstream is expected 35 km upstream from the dam, and those of the Churyungcheon and Oknyudongcheon tributaries are expected 11km, 5.4km upstream from the conjunction, respectively. To estimate flood discharge and water level corresponding to dam release, the flood routing for the reach between the dam and Jeokseong stage gaging station has been conducted. The results show that the vulnerable point of the bank is expected 19.92 km upstream from the Jeokseong station. If the present planned bank has been constructed, the bank can convey runoff successfully without overflowing even on condition 1,530 m/sec dam release.