http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : ( Yu Ryang Pyun ) (검색결과 160 건)
- 무료
- 기관 내 무료
- 유료
-
변유량,이동선 慶南大學校 附設 工業技術硏究所 1986 硏究論文集 Vol.4 No.-
저산성 식품의 회분식 고온 스팀살균시 에너지소비를 요인별로 분석하였다. 물질수지 및 에너지수지 방정식으로부터 각 항목별 열손실 및 열사용을 예측하고 전체 에너지소비를 구하였다. 전도열전달 모델식품으로서 5% 벤토나이트용액과 대류열전달 모델식품으로서 물을 사용하여 301-7호관에 포장하여 열침투특성을 구하고 110℃, 121℃, 130℃에서 살균하는 조건에 대하여 분석하였다. 에너지 소비는 110℃에서가 121℃와 130℃에 비해서 현저히 많았고 요인별로 볼 때 이는 bleeding과 대류 및 복사열손실에 의한 것으로 나타났다. 또한 조건별 가열효율에 대하여 검토하였다. A procedure was developed for predicting energy consumption of batch type thermal processing of food. From mass and energy balance equations various energy usages or losses were estimated for steam sterilization of model food system in No. 301-7 can(Ø74.1×113.0㎜) at three different temperatures. Selected models were 5% bentonite solution for conductive food and tap water for convective food. Total steam or energy consumption was higher at 110℃ than at two other higher temperatures(121℃ and 130℃). High energy consumption at low sterilization temperature was mainly due to high bleeding steam energy and convective and radiative heat losses. Thermal energy efficiency was also disscussed.
-
卞裕亮,李神榮,曺亨勇 연세대학교 대학원 1981 延世論叢 Vol.18 No.1
The viscometric behavior of rice starch solution was studied with the capillary tube viscometer operated under various pleasures. Heated starch solution ranged from 3 to 9wt% were used as samples and flow constants in an equation r=(1/K)(gcτ- gcτy)n were determined by a non-linear least square method using the digital electronic computer. The value of flow behavior index n was found to be 1.2 in all samples. In the case of 3 and 5 wt% solutions, the values of yield stress could be overlooked, but the values of τy were relatively large and increased with the increase in concentration from 5 to 9 wt%. The temperatue dependence of flow consistency index K measured at 30~80℃ were expressed by Arrhenius equation. The values of activation energy were 3.5 to 10.2 kcal/mol.
-
변유량,최홍식,조형용,권윤중,김주봉 연세대학교 산업기술연구소 1984 논문집 Vol.16 No.1
The vertical column batch dryer which is suitable to Korean farm was constructed and dryer performance was investigated through field test. The effect of a drying air temperature and an airflow rate on the drying rate was studied, and an empirical drying equation was established. The average drying rate of paddy were 1.6-1.8%/hr at the air temperature of 43℃ and the airflow rates of 19.4 - 24.5 CFM/ft². The differences of grain moisture content between the inner and outer layer of vertical paddy bed were 0.5 - 0.9% The effect of a drying air temperature was larger at high airflow rate. At constant temperature, the drying rate was increased as an airflow rate was increased. The empirical drying equation could be expressed as followed: ??=0.9exp(??) Where K=3.22×?? The average whitening ratio of brown rice which was dried with column batch dryer was higher 0.6% than that of sun dried rice.
-
柳洲鉉,卞裕亮,劉承坤 연세대학교 산업기술연구소 1978 논문집 Vol.8 No.1
The amount of ethanol extract from ginseng was about 20.3% (w/w)and the yield of saponins from the extract was 5.5% (w/w). The optimum concentration of solvent was 60% ethanol. The optimum extraction time and temperature were respectively 2 hr and 80℃ when 0.5g of sample (Φ:0.25∼0.42mm) was added to 300ml of solvent. The empirical equation for the extraction of components was as follow: Y(θ,T,φ)=8log(Θ??100)-45log(T??×100)-60log(Φ??×100)+38 The partical size of sample had largely influence on the extraction yield, and the extraction mechanism was considered as diffusion.
-
손석민,김인규,변유량 한국산업미생물학회 1992 한국미생물·생명공학회지 Vol.20 No.5
침강조의 중앙에 깔대기 모양의 판을 설치하고 방해판 아래 다시 공기 방울과 CO_2 가스의 별도 배출구를 설치하여 상부로의 난류를 방지하므로 침강 효율이 크게 향상되도록 settler를 고안하였다. 이 settler를 설치한 탑형 발효조에서 응집성효모 S. uvarum의 에탄올 생산성을 검토한 결과 방해판을 설치하지않은 단순한 원통형 settler에 비하여 1.5배 증대되었다. 또한 탑형 발효조에서 균체 순환율이 에탄올 생산성에 미치는 영향을 살펴본 결과 균체 순환율 1∼5 사이에서는 에탄올 생산성의 변화가 거의 없었으나 6 이상에서는 균체가 유출되므로 에탄올 생산성이 감소하였다. 글루코오스 200g/ℓ의 배지를 공급하면서 균체 재순환 연속 에탄올 발효를 한 결과 침강조의 침강성이 매우 우수하여 희석율 2.Oh^-1까지 조업이 가능하였으며, 희석율 1.1h^-1에서 최고 에탄올 생산성 64.Og/ℓ·h를 얻었다. 이 때 잔당은 80.3g/ℓ, 균체 농도는 88g/ℓ, 생성된 에탄올 농도는 58.8g/ℓ였다. 이와같은 생산성은 현재까지 보고된 응집성 효모의 에탄올 생산성에 비하여 2∼3배 향상된 매우 우수한 결과이다. A tower fermentor equipped with a modified settler was used for ethanol fermentation using highly flocculating yeast, Saccharomyces uvarum. The settler was constructed of glass column divided into two chambers by a funnel shaped divider. Gas was allowed to escape from lower chamber of the settler through a small tube. This design significantly reduced the turbulence in upper chamber of the settler and made it possible to operate at high dilution rate. Using the tower fermentor, the effects of operating conditions such as initial glucose concentration, dilution rate and cell recycle ratio were studied. The maximum ethanol productivity, 64.0 g/ℓ·h was obtained at a dilution rate 1.1 h^-1 and a cell recycle ratio 5 with the corresponding ethanol concentration of 58.8 g/ℓ, and cell mass of 88 g/ℓ.
-
손석민,김인규,권윤중,변유량 연세대학교 산업기술연구소 1992 논문집 Vol.24 No.2
응집성 효모를 이용하여 추출 발효법을 개발하고자 내당 내알콜성 응집 효모인 Saccaromyces uvarum ATCC 26602를 사용하여 oleyl alcohol을 용매로 액-액 추출 발효를 행하였다. 그 결과 에탄올 저해 현상의 감소로 균체활성이 향상되었으며, 용매를 단속적으로 교환하여 줌으로써 배지중의 에탄올 농도를 40∼60g/L 범위를 유지하고 300g/L의 고당농도 배지를 공급하면서 계속적인 발효가 가능하였다. 그러나 용매의 분배 계수가 낮아 다량의 용매가 필요하였으며, 적절한 용매가 개발되면 효율적인 발효시스템으로 발전될 수 있을 것으로 기대된다. The process feasibility for continuous extraction of ethanol by oleyl alcohol form fermenting broths in batch or fed-batch cultures was studied. An immiscible organic solvent was introduced directly to the culture broth of flocculent yeast by bubbiling through the bottom porous sparger of a column fermentor. By continuously removing ethanol from the broth, cell activity was increased, and a concentrated feed medium containing 300 g/l glucose was successfully fermented. Operation of fed-batch extractive fermentation could be carried out for a long time by changing periodically the recycled solvent with fresh solvent.
-
-
-
-
KISS연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
