수출용 축양품종 가지의 염절임 공정의 최적화

남학식,김남우,황성희,윤광섭,신승렬 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2003 한국식품저장유통학회지 Vol.10 No.3

가지의 수출 경쟁력 향상을 위한 한 방안으로 수출용 가지품종인 축양품종을 염가공품으로 개발하기 위하여 염절임공정을 최적화하였다. 염절임 시간, 절임온도, 염농도를 독립변수로 하고 절임 후 수분함량, 염도, 표면과 내부의 색도 등을 종속변수로 하여, 중심합성계획법으로 실험을 설계하여 최적조건을 얻고자 하였다. 수립된 이차회귀모형으로 예측식을 수립할 수 있었으며 특히 수분함량이나 염도, 표면과 내부의 L과 b 값에 대하여 높은 적합도를 보여 최적조건을 수립하기 위한 제한 변수로 선정하였다. 염농도를 중심점(30%)에서 고정시켜서 얻은 절임시간과 온도는 각각 5.5~6.5일과 13-17℃였으며, 이때의 종속변수의 제한 요건으로는 수분함량 84%이하, 염도 14%이하 표면 L값 10-20, b값 0이하, 내부 L 값은 70-75, b 값이 16-18이었다. This study was conducted to the optimize salting process of eggplant for development new product and enhancement quality for export. Three variables by five level central composite design and response surface methodology were used to determine optimum conditions for salting time, temperature and salt concentration. Optimization of the process was conducted using the combination of the moisture content, salinity and color of surface and inside of salted eggplant. The regression polynomial model was suitable (P>0.05) by Lack-of-Fit analysis with highly significant. To optimize the process, based on surface response and contour plots, the individual contour plots of the response variables were superimposed. The optimum conditions for this process were 6 days and 15℃ at 30% concentration under the optimum of restricted variables as moisture content was below 84%, salinity was below 14%, L and b value of surface were 10 to 20 and below 0, L value and b value of inside were 70 to 75 and 16 to 18.

수강 등록 데이터의 빈출 패턴을 이용한 학업 진척도 및 상태 분석을 위한 시퀀스 데이터 마이닝

정효남·전성희·황준 서울여자대학교 컴퓨터과학연구소 2014 정보기술논문지 Vol.12 No.-

ZVS를 이용한 풀 브릿지 단일 전력단 고주파 공진 AC-DC 컨버터의 특성해석

남승식,황계호,오경섭,원재선,조규판,김동희 嶺南大學校 工業技術硏究所 2003 工業技術硏究所論文集 Vol.31 No.2

This paper proposes a single-stage high frequency resonant AC-DC converter using zero voltage switching with high input power factor. The proposed high frequency resonant converter ingegrates a half bridge boost rectifier as power factor corrector(PFC) and half resonant converter into a single stage. The input stage of the half bridge boost converter is working in discontinuous conduction mode(DCM) with constant duty cycle and variable switching frequency. Therefore, high power factor is achieved naturally. The results of simulation using the Pspice have demonstrated the feasibility of the proposed AC-DC converter. The proposed converter will be able to be practically used as power supply.

歷史環境法制의 내용과 문제점

남궁승태,박정희 대불대학교 2002 大佛大學校大學院 硏究論文集 Vol.- No.1

E급 스위칭 Mode DC-DC Converter에 관한 연구

남승식,김동희,노채균 嶺南大學校 工業技術硏究所 1992 연구보고 Vol.20 No.1

This paper proposes a DC-DC Converter of high frequency inverter control type of E class switching mode to reduce switching loss by constructing a resonance type DC-DC Converter. The steady state characteristics of the proposed circuit is analyzed by mormalized parameters. In addition, the characteristics of proposed DC-DC converter of E class switching mode is evaluated by describing the characteristics frequency, load, switching voltage and current. Based on the characteristic values, a method of circuit design is proposed. A constant output is controlled by PWM and PFM-TRC method using power MOSFET. By means of experiment, the proposed theory is proved and the results show that it can be used for practical purposes.

와전류검사에 의해 검출된 증기발생기 전열관의 균열 특성

조찬희,남민우,김영호,양승한,이희종 한국비파괴검사학회 2004 학술대회 논문집 Vol.- No.-

The flaws detected at the steam generator tube of the Nuclear Power Plant are the wear indications by anti-vibration bars and circumferential cracks at the top of the tubesheet. It is easy to detect and size wear indications. Also the wear indications are commonly found at the steam generator tubes. However, the steam generator tube which includes crack indication is plugged because it is very difficult to predict the growth rate and the sizing error is high. The motorized rotating pancake coil has been used for the detection of circumferential crack since it is not possible to detect using the conventional bobbin probe. This paper describes the characteristics for the circumferential crack at the steam generator tubes of the Korean Standard Nuclear Power Plants.

의복유형과 헤어스타일이 남성의 인상형성에 미치는 영향

임남영,강승희 服飾文化學會 2003 服飾文化硏究 Vol.11 No.3

The purpose of this study was to examine the effect of clothing type and hair style on men's impression formation. The experimental design was 4×2×2×2 (clothing type×hair style×perceiver's age×perceiver's role)factorial design with between-subjects design. The stimuli of color photographs of male in his 20's model and semantic differential scale were used. The data were obtained from questionnaires completed by 881 men and women in the metropolitan area of Seoul. The SPSS package was used for data analysis which includes factor analysis, t-test, and Cronbach's a to measure the reliability. This study showed the following results. Four factors were derived to account for the dimensions of impression formation. These were dignity, activity, individual character, and social intercourse. Men evaluated individual character factor higher than women did. Dignity factor was evaluated higher by students, while social intercourse factor was evaluated higher by office workers. The clothing type of shirts/pants was evaluated to be more active and more sociable than of jacket/pants. Men wanted to exhibit natty image and women did elegant image through clothes.

모야모야 병에서 Brain SPECT를 이용한 수술후 평가 : 증례보고 Case Report

김창희,신문수,허승곤,정남,이광수 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.2

Moyamoya disease is characterized by progressive occlusion of major cerebral arteries and development of an abnormal vascular network. We performed EDAS(encephalo-duro-arterio-synangiosis) on 2 patients with moyamoya disease and obtained preoperative and follow-up brain SPECT to evaluate the effect of EDAS. In this study, moyamoya disease was confirmed by angiogram and the relation between the patient's clinical status and postoperative findings of SPECT was presented. In all cases, a marked increasing blood perfusion was noticed on the implanted area together with improvement of clinical status.

복어중독에 의한 가사 상태에서 소생한 1예

송승찬,신진호,강석우,박경남,최호순,박근태,문희식,기춘석,이성희,윤병철,노우균,조균석,이민호 大韓應急醫學會 1998 대한응급의학회지 Vol.9 No.3

Tetrodotoxin is a neurotoxin produced by about 90 species of puffer fish and causes paralysis of central nervous system and peripheral nerves by blocking the movement of all monovalent cation. Ingestion of tetrodotoxin produces clinical manifestations such as paresthesias(within 10-45 min), vomiting, lightheadedness, salivation, muscle twitching, dysphagia, difficulty in speaking, convulsion and death that expressed by cardiopulmonary arrest with loss of brain stem reflex sometimes. Tetrodotoxin prevents or delays ischemia induced neuronal death by way of following 3 mechanisms. Firstly, it reduces the energy demand of the brain tissues. Secondly, it delays or even prevents anoxic depolarization. Finally, it deminishes ischemia induced cell swelling and cerebral edema. We report a case of puffer fish poisoning which presented with cardiopulmonary arrest and loss of brain stem reflex, but completely recovered by aggressive cardiopulmonary resuscitation.

人體 胃癌 및 胃炎에서의 CEA의 表現에 對한 免疫酵素 組織學的 硏究

元南熙,李大一,白承龍 고려대학교 의과대학 1982 고려대 의대 잡지 Vol.19 No.3

Carcinoembryonic antigen (CEA) isolated from adenocarcinomata of human digestive system and fetal or embryonic gut tissue is one of tumor associated antigens. In recent years, extensive studies to detect CEA in the blood as well as in the tissue of various conditions have been reported. However, characterization of CEA in the tissue of stomach cancer, common malignant tumor in Korea, has rarely been investigated. The author performed peroxidase-antiperoxidase immunohistologic study with anti-CEA antibody to determine the presence of CEA in 51 cases of gastric adenocarcinoma and 18 cases of chronic gastritis. All tissues examined were obtained with endoscopic biopsy, fixed in 10% formalin and embedded in paraffin. The findings were analysed and results obtained are as following. 1. CEA positive reaction to anti-CEA antibody was noted in 45 of the 51 cases with gastric cancer (88.2%). 2. Patterns of positive reaction to anti-CEA antibody of 45 CEA positive adenocarcinomas were focal in 9 cases (20.0%), moderate in 10 cases (22.2%) and diffuse in 26 cases (57.8%). 3. Comparing the pattern of CEA positive reaction with histologic differentiation of cancer cell, the differentiated type showed diffuse linear pattern along membrane the surface and undifferentiated type revealed focal positive pattern in the cytoplasm. 4. Of 18 cases with chronic gastritis, 8 cases of non-specific gastritis and 10 cases of intestinal metaplasia, CEA poistive reaction to anti-CEA antibody was noted in 4 cases at the lesion of intestinal metaplasia. The results obtained above suggest that presence of CEA in gastric cancer is detected 88% of cases, variable in pattern, partly depending on morphologic differentiation, and even exhibit in goblet cells in some intestinal metaplasia which is believed to be a precancerous condition of stomach cancer.