1. 식품의 건조
<식품건조의 이득>
① 무게와 부피가 줄어 다루기가 편하다
② 수송과 유통에 도움을 준다
③ 미생물의 번식을 억제하여 식품의 장기저장을 가능하게 한다.
④ 건조과정에서 독특한 색, 맛, 향미가 형성되는 경우가 많아 상품적 가치를 높여준다.
- 그러나 열에너지를 많이 소요할
with EtOH and drying
The Barrett-Joyner-Halenda (BJH) method for calculating pore size distributions is based on a model of the adsorbent as a collection of cylindrical pores. The theory accounts for capillary condensation in the pores using the classical Kelvin equation, which in turn assumes a hemispherical liquid-vapor meniscus and a well-defined surface tension.
General theoretical sintering temperature is 70% of the melting point
- ZrO2 : Tm – 2700 ℃ sintering temperature - 1890 ℃
- Al2O3 : Tm - 2050 ℃ sintering temperature - 1435 ℃
The actual sintering temperature
- ZrO2 : 1400 ℃
- Al2O3 : 1650 ℃
The alumina has Corundum structure , this is stable transformation of a-Al2O3
rhombohedral
T
We discovered that most of our subject's occupation was teacher and soldier. As can be seen from chart 2, males who serve in military official tend to use more non-neutral terms by 5 to 7 whereas females used twice each. As Military official culture is a strict hierarchical and still male centered, they are not used to neutral term. On the other hand, teachers and students tend to use more neutra
4.3 Systems
Top management give all employees smart phone to more flexible approach to every metro system. Also company make application used in smart phone based on employee's working process. Company has many systems for monitoring customers’ satisfaction. First they operate call center 24 hours, so anyone who have complaint and opinion about Seoul Metro 5678 call that center to ask them. A
1. Introduction
1) Definition of preservation and food-spoilage micro-organisms
Food preservation is the process of treating and handling food to stop or greatly slow down spoilage (loss of quality, edibility or nutritive value) caused or accelerated by micro-organisms. Some methods, however, use benign bacteria, yeasts or fungi to add specific qualities and to preserve food (e.g., cheese, wine
mA/, 50mA/, 75mA 이다.
2.4 Point Probe method
2.4.1표면저항 (ohm/sq = Ω/□: Sheet resistance)
표면저항은 보통 단위 Ω/□로 표시된다. 일반적인 선 저항은 두 개의 probe로 임의의 거리에 대한 저항을 측정하지만, 표면저항의 경우에는 동일한 간격의 4개의 탐침으로 측정하게 된다. 이때 쓰이는 Probe가 Four point probe
modified cover letter. No explicit incentives were provided. In addition to returned questionnaires due to faulty addresses, follow-up phone calls were conducted to assess non-response. Results indicated that 20 percent of the questionnaires did not reach their intended respondents. The resulting pool of 243 completed questionnaires represented an effective response rate of 15.1 percent. Of the r