• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1999.07a
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• pp.59-64
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• 1999

쌀 농사의 재배는 파종, 이앙, 본포 관리, 수확, 가공의 과정을 거치며 이중 대부분의 과정에서 약 95%이상의 기계화 작업이 이루어지고 있다 한편, 쌀 농사의 부산물인 볏짚은 미작 농의 2차 생산품으로써 최근 시설재배영농, 축산업, 수출용 다다미, 새끼, 깔집 등의 분야에 다량으로 소비되고 있는 추세이다. 특히 볏짚을 원형대로 사용하는 느타리버섯재배, 꺼치, 새끼, 깔집, 다다미 등의 생산에 필요한 볏짚은 최근 수요가 계속적으로 증가하여 볏짚의 자원성을 더욱 높이고 있다. (중략)

• Journal of Food Hygiene and Safety
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• v.12 no.4
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• pp.346-353
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• 1997

This study was undertaken to find out distribution and contamination sources of hazardous microbes through microbial hazard analysis on the processing steps of surimi-based imitation crab (SBIC). As a results of ananlysis of 9 hazardous microbes for 16 raw materials and 8 processing steps, no Samonella spp. and Escherichia coli were detected in all samples. Level and distribution of hazardous microbes in mixed color were similar to those of surimi. Changes of aerobic plate counts (APC), psychrotropic bacteria, coliforms, Staphylococcus aureus and Vibrio parahaemolyticus showed similar trends at different processing steps. Thermotrophic bacteria and aerobic sporeformers were not detected until mixing step and feeding step, respectively and not reduced after cooking step. According to the comparison of APC at each step, it was suggested that surimi, workers and silent cutter at mixing step, and mixed color, workers and bundler at packaging step were the major contamination sources of bacteria.

• Journal of Korean Society of Forest Science
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• v.104 no.2
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• pp.198-205
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• 2015

The aim of this study was to provide the basic design parameters for developing logging residue compression machines by investigating compressive deformation characteristics of different types of logging residues. To achieve these objectives, Pinus rigida, Pinus koraensis and Quercus mongolica were selected as specimens, and compression-deformation tests by UTM(universial testing machine) were conducted. The experimental dataset were used to set up the model based on the compression-deformation ratio in the form of exponential function. The results showed that stress coefficient in terms of mechanical properties of logging residues was decreased, whereas strain coefficient tended to be increased as the number of compression increased at target density of $350kg/m^3$ and $400kg/m^3$. The model presented that the required stress was decreased as the number of compression increased, and the stress growth rate was swelled compared to the change of the deformation rate. Therefore, it showed that proper initial compression force was a significant variable in order to achieve the target density of logging residue.