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Yang, Seong-Cheol;Yu, Tae-Seok;Eom, Ju-Yong
- International Journal of Highway Engineering
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- v.2 no.2
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- pp.139-148
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- 2000
Currently existing Accelerated Pavement Testing (APT) systems developed in several countries have been employed mainly to test the performance of asphalt pavement. Meanwhile, the length of concrete pavement is similar to that of asphalt pavement in expressways of Korea. and is expected to increase due to its durability and compatibility to our weather condition. To meet the society's demand of having our own APT system which can examine the long-term performance of concrete pavement, a contract study to develop Korea Accelerated Loading and Environment Simulator (KALES) for concrete pavement has been performed for 3 years from 1997 through 1999. Through the project, a detailed design was Peformed for the KALES system in which the entire structure of KALES, loading mechanism, wandering mechanism, suspension system, driving system were proposed. Also in advance to design a full-scale KALES system, a sample scale model was manufactured and tested for operating motion and force distribution. It is evident that the proposed prototype KALES system will provide higher degree of traffic simulation and durable operation, based on the satisfactory fatigue analysis.
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한국포장협회
- The monthly packaging world
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- s.9
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- pp.70-77
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- 1994
일본포장관리사회는 93년도 일본 포장업계 10대 뉴스에서 자국 포장업계가 93년도 한 해 '미증유의 시련기' 였음을 제일 첫째로 꼽고 있다. 거품경제 붕괴 뒤의 경기 후퇴, 엔고 등 나름대로 이유가 있었겠지만 국내 포장업계 사정도 일본의 경우와 크게 다르지 않았을 것으로 사려된다. 구랍 16일 한국포장협회 회의실에서 각 부문의 관계자들이 참석한 가운데 열린 좌담회를 통해 93년도 국내 포장산업의 회고와 94년도 전망을 들어본다.
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Kim, Dong-Ho;Lee, Young-Chun
- Korean Journal of Food Science and Technology
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- v.36 no.6
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- pp.943-951
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- 2004
As storing ginger roots under optimum conditions takes high cost, ginger roots are commonly stored in underground tunnels where the maintenance of optimum temperature and humidity is difficult. One of the methods fur long term storage of ginger roots is freezing. The objective of this research was to evaluate effect of storage temperatures and packaging methods on the quality of minced ginger prepared with frozen stored ginger. The minced ginger prepared with frozen stored ginger at $-20^{\circ}C$ was packed in bags, glass bottles and tubes, and then stored at 5 and $-20^{\circ}C$ for quality evaluation at 4 and 15 week-intervals. The changes of surface color, total free sugars, free amino acids and volatile compounds were less in the combined treatment samples than in control during storage, regardless of the storage temperature. The tube packing was the best for maintaining quality of minced ginger during storage among tested packaging methods. Sensory results showed that the minced ginger with the combined treatment and packed in tubes could be stored at 5 and $-20^{\circ}C$ for 12 and 45 weeks, respectively, without a significant drop in palatability.
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