가스치환포장이 냉장돈육의 저장성에 미치는 영향

진상근,문점동 진주산업대학교 농업기술연구소 2000 農業技術硏究所報 Vol.13 No.-

The present experiment was undertaken to investigate the effects of the modified atmosphere packaging(MAP) with different gas composition, i.e. control(vaccum-packaging), T1(100% CO_2), T2(30% CO_2, 70% N_2), T3(30% CO_2, 50% N_2, 20% O_2) and T4(50% CO_2, 30% N_2, 20% O_2), on the changes of meat quality of porcine loin eye cuts after 6 wk of storage in the refrigerator(0±1℃). Summarized below are changes after the storage in phycochemical characteristics and the bacterial count. pH, WHC, TBARS, VBN, number of coliform bacteria and total plate count increased after the storage in all the treatments(Ts), whereas L, a and b values of the meat color decreased. Compared with control, pH was decreased in all the Ts; WHC was lowest in T2; purge loss was lowest in T2 and T3. L, a and b values of the meat color were not different between the control and Ts. TBARS, by contrast, was higher in all the Ts except T2; VBN and the number of coliform bacteria were greater in all the Ts; total plate counts were greater in all the Ts except T1 than in control. Taken together, T1 was the most effective MAP among those Ts that had been tested in improving the shortcoming of the vacuum-packaging. However, more studies are necessary to develop a MAP using O_2 gas that can maintain the meat color without causing any disadvantageous effect in fat oxidation.

침수시 산적화물선 파형 횡격벽 붕괴강도에 대한 이론적·수치적 연구

백점기,김성근 釜山大學校生産技術硏究所 1998 生産技術硏究所論文集 Vol.54 No.-

본 논문에서는 침수시 산적화물선 파형 횡격벽의 붕괴강도에 미치는 주변구조의 영향에 대해서 조사한다. 저자들은 파형 횡격벽의 붕괴강도를 계산하기 위한 비선형 전용 유한요소 프로그램을 개발하였으며, 간단한 수치입력만으로 파형격벽 유한요소 모델링이 자동적으로 프로그램내에서 수행되고 사용자는 스툴과 Shedder plates, 갑판 및 이중저와 같은 주변구조를 선택적으로 포함시킬 수 있다. 수치해석 예로서는 실제 Capesize급 산적화물선에 적용하여 파형격벽과 주변구조간의 다양한 경계조건하에서 붕괴강도 특성을 분석하였으며, 그 결과를 기준의 간이설계식과 비교·검토하였다. This paper investigates the influence of influence of adjoining structures on the collapse strength of bulk carrier corrugated bulkheads subject to accidental flooding. A special purpose nonlinear finite element program suitable for direct calculations of strength is developed as part of the study. In the program, the adjoining structures such as lower and upper stools, shedder plates, double bottom and deck structures, are included as options in the automated finite element structural modeling of the corrugated bulkhead. To illustrate application, a hypothetical Capesize bulk carrier bulkhead is analyzed in several different ways to investigate the variation in its ultimate strength and stiffness for different end conditions of the bulkhead. A comparison of the finite element based ultimate strength against predictions based on simplified design formulae is also made.

식육처리기구 및 신선돈육의 위생적 처리방법에 관한 연구

문점동,진상근,박태선 진주산업대학교 농업기술연구소 1998 農業技術硏究所報 Vol.11 No.-

식육처리시 사용되는 실내의 공기, 도마, 칼, 장갑, 육절기 등의 위생적인 살균방법 및 지육, 정육을 가공용수(온수, 냉수), 알콜(70%), 유기산(acetic acid, citric acid, lactic acid, formic acid, chloride)을 처리하여 식육의 초기오염도를 조사한 결과는 다음과 같다. 70% 알콜 및 온수를 이용하여 식육처리기구의 오염원을 제거하기 위한 효과는 두 방법 모두 처리구가 대조구에 비하여 우수한 것으로 나타났으며, 온수와 70% 알콜의 처리방법은 온수가 뛰어났다(P<0.05). 지육의 처리는 온수처리를 통하여 오염원을 최소화할 수 있었다. 정육의 처리는 70% 알콜 처리로 총생균, 대장균의 증식을 억제할수 있었다. 유기산 처리를 통한 돈육의 오염원 최소화는 전체 처리구 모두 대조구에 비하여 우수한 경향을 나타내었으며, 이중 젖산균이 가장 우수한 것으로 나타났다. 유기산 처리시 육색은 차이를 나타내지 않았으며, 유기산 처리 후 관능검사에서는 생육, 가열육의 경우 모두가 차이를 발견할 수 없었다. 이상 본실험에서 온수, 알콜을 통한 소독과 유기산을 통한 정육의 처리는 오염최소화를 시킬 수 있는 방안으로 나타났다. This study was determine the effects of sanitary treatments that air conditioning, kitchen board, knife, glove, slicer, carcass and pork meat were treated water(hot and cold), alcohol(70%), organic acid(acetic acid ; AA, citric acid : CA, lactic acid : LA, formic acid ; FA) and chloride(200ppm). This study results obtained were summarized as follows ; Treatments of water and 70% alcohol were superior to control in the effect of removing contamination of carcass equipments. Hot water treatment was better than the other treatment(P<0.05). Carcass treatment gives the lowest contamination for Hot water. Pork meat was repressed all total plate count and E. coli by 70% alcohol. Pork meat treatment treated organic acid for the lowest contamination was better than control. Lactic acid was remarkable superior. Change o meat color by organic acid treatment did not take. Sensory evaluation by treatment of organic acid did not show difference in both of raw and cooked meat. Treatment of pork meat by disinfection of hot water, alcohol and organic acid was the way for the least contamination.

대구지역 실내 외 공기중 주요 대기오염물질의 농도조사에 관한 연구

최진수,백성옥,김영민,박상곤,정점희,황승만 嶺南大學校 環境問題硏究所 1995 環境硏究 Vol.15 No.1

최근 현대인의 실내거주시간이 일상생활시간의 80% 이상을 차지할 정도로 크게 증가하면서 보건·위생학적 측면에서 실내공기질은 매우 중요한 관심사로 등장하게 되었다. 본 연구는 1994년 8월의 여름철과 1994년 12월 ∼1995년 1월의 겨울철에 대구를 중심으로 가정집, 사무실, 식당과 같은 3가지 유형의 일반주거환경 중 실내·외 공기를 대상으로 실행되었다. 측정항목으로는 RSP, CO, CO₂, NO₂등의 주요 기준성 오염물질과 Bioaerosol을 선정하였다. 본 연구의 결과, 각 성분대상물질의 실내·외 농도는 실내거주환경 및 여름과 겨울, 두 계절에 따라 영향을 받는 것으로 나타났으며 실내·외 농도비교에서 RSP, CO, CO₂의 실내농도는 대부분의 지역에서 실외에 비하여 높은 농도를 나타냈다. 각 실내거주환경에 따른 실내·외의 농도는 가정, 사무실에 비하여 식당에서 상대적으로 높은 농도를 나타냈으며 실내·외 농도비 또한 식당에서 상대적으로 큰 값을 나타냈다. 여름과 겨울의 두 계절에 따른 RSP, CO, CO₂의 실내·외 농도는 여름철에 비하여 겨울철에 더욱 높은 농도를 나타냈으나 Bioaerosol의 실내·외 colony/plate는 여름철에 더욱 높은 수치를 나타냈다. The study was carried out to investigate the concentrations of indoor air pollutants such as respirable suspended particulate (RSP), carbon monoxide (CO), carbon dioxide (CO₂), nitrogen dioxide (NO₂) and bioaerosol at homes, offices and restaurants in Taegu city. Indoor and outdoor concentrations of these pollutants were observed simultaneously from August 1994 for summer to January 1995 for winter. The results were summarized as follows : 1. Both in summer and in winter, the indoor concentrations of RSP, CO, and CO₂; were higher than the outdoor concentrations, the indoor concentrations of major air pollutants (RSP, CO, CO₂, NO₂) in restaurants were higher than those in homes and offices. 2. The indoor and outdoor concentrations of RSP, CO, and CO₂; in winter were significantly higher than those in summer, on the other hand. The CFU/plate of bioaerosol in winter was lower than that in summer. These results suggested that indoor levels of air pollutants were affected by various indoor characteristics such as smoking, cooking, ventilation rate, winter heating systems, and behavioral activity of occupants.

회귀예측신경망과 확률신경망 결합에 의한 음절인식

어태경,김주성,안점영 東義大學校産業技術開發硏究所 1998 産業技術硏究誌 Vol.12 No.-

In this paper, we perform the recognition experiments of Korean 100 syllables based on RPNN. RPNN is a non-linear predictor according to the time variation of a speech without an alignment procedure. In the experiments, we study on the recognition rates, by increasing the prediction order and the number of hidden unit, and by appling the PNN as recognizer. In the method 1, when the prediction order is 3rd order and the hidden unit are 10 units, the recognition rates show better result than others. The recognition rates of the method 2 are improved than its results of the method 1, especially in the method 2, when the prediction order is 3rd order and the hidden units are 5 units, the recognition rates show better result than others.

고추 국내외 수집 유전자원의 특성

황희숙,황재문,이우승,김점순,김병수 慶北大學校農業科學技術硏究所 1998 慶北大農學誌 Vol.16 No.-

국내외로부터 수집한 고추 유전자원을 포장에 재배하여 종자를 증식하는 동시에 주요 특성을 조사하였다. 헝가리에서 도입하여 1992년도에 평가한 계통들은 Hungarian Wax 혹은 Bell형으로서 바이러스에 심하게 걸려 우리포장환경에 잘 적응하지 못하였다. 1994년도에 평가한 계통들 중 브라질에서 풋마름병 저항성으로 도입한 KC350과 KC351은 직립성이며 바이러스에 강한 편이어서 매우 유망한 유전자원으로 사료되었다. 중국에서 도입한 KC376는 바이러스에 강한 편이며 대과를 착생하여 유망하게 보였다. 태국에서 도입된 계통들은 안동대에서 특성을 평가기록하였다. Accessions of pepper germplasm were planted in the field and their characteristics were recorded. Lines introduced from Hungary were very susceptible to virus diseases and as a result poor in adaptability in domestic field condition. KC350 and KC351 which were introduced from Brazil were growing errectly and tolerant to both bacterial spot and virus diseases. KC376, an introduction from China, was bearing large fruits with tolerance to virus. Introductions from Thailand were grown and evaluated in Andong Universiy, and major characters of them were recorded.

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SULFUR REMOVAL FROM SYNGAS BY ZINC-BASED SOLID SORBENTS

Jeom-In BAEK,Tae Hyoung EOM,Joong Beom LEE,Dong Hyuk CHOI,Seong Jegarl,Chong Kul RYU,Young Cheol PARK,Sung-Ho JO,Yongseung YUN 한국신재생에너지학회 2012 AFORE Vol.2012 No.-

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