본 연구에서는 내식성이 우수한 동합금에 대하여 내구성 향상을 위해 쇼트피닝 시간을 변수로 표면 개질하여 전기화학적 특성과 조직 변화를 관찰하였다. 그 결과 쇼트피닝 후 표면에 전체적으로 요철이 발생하였으며, 시간이 증가할수록 커버리지 향상에 따른 균질화 현상이 관찰되었다. 또한 쇼트피닝된 모든 시험편에서 경도가 향상되었으며, 쇼트피닝 시간이 3.5분일 때 52 %의 경도향상을 나타냈다. 그리고 이때 전기화학적 특성은 쇼트피닝을 실시하지 않은 경우와 유사하였다

밤가루를 밀가루에 0%, 10%, 20%, 30% 대체한 복합분에 대하여 반죽의 물리적 특성 및 제빵 특성을 검토하고 밤가루 첨가가 빵의 기호도에 미치는 영향에 대해 조사하였다. 반죽의 물리적 특성 중 farinogram 측정 결과 밤가루의 첨가량이 증가함에 따라 반죽시간은 짧아졌으나 반죽의 안정도와 내구성이 약화되었다. Amylogram에서 호화온도는 대조군에 비해 다소 증가하는 경향을 보인반면 최고점도는 감소하였다. 반죽팽창도 측정결과 밤가루가 20%이상 첨가된 반죽은 변화가 없었으며, 제빵 후 빵의 부피가 작고 비용적도 낮았다. 밤가루 첨가에 따른 식빵의 품질평가결과 밤가루를 10% 첨가하여 제조한 식빵이 20%, 30% 첨가한 식빵에 비해 경도가 낮았으며, 내상 또한 비교적 작고 균일하였다. 밤가루 첨가시 10%이내가 좋을 것으로 사료된다.

An outbreak of Ussur Brown Katydid, Paratlanticus ussuriensis, occurred in the orchard areas of central Korea during 2006 and 2007. These crickets occur widely in Korea but before 2000 they were not regarded as an agricultural pest and were mainly confined to wooded hillsides. In an attempt to understand this katydid ecology, firstly, we have conducted a life cycle study of the Ussur brown katydid. This katydid spends one or two years as an egg stage. Most of eggs enter the initial diapause, which take place in stage 4. Less than 10% eggs didn't occur the initial diapause and developed until in stage 23 before beginning winter season. In the laboratory experiment, diapause depends on the initial temperature after eggs laid. They had an initial and final diapause around less 25℃. Therefore, it takes two years to hatch at low temperature. On the other hand, eggs are kept at temperatures around over 27℃, entry into the first diapause stage was circumvented and eggs emerged the following spring. That is, the high temperature seems to affect on the life cycle of Katydid. Thus, if they are exposed to high temperature on early egg stage, they emerge next year just after spending a winter.

Benthic macroinvertebrate communities were collected in various streams in agricultural and urban areas in Korea. Community structure and species abundance distribution in benthic macroinvertebrates were comparatively analyzed to reveal ecological states pertaining to the sample sites. Species richness in the total macroinvertebrate communities decreased in the gradient along with increase in the level of pollution. Some selected taxa were present in communities collected in the streams in agricultural areas. The rank-abundance curves were also characteristic in revealing community structure according environmental impact. Patterns of species abundance were efficient in revealing ecological states of the sample sites where physico-chemical indicators may not be easily differentiated in stressful conditions. The feasibility of ecological informatics was further discussed in revealing ecological water quality.