The blast hole has a space between explosive and hole wall, and blast forces reaches the hole wall face with a large amount of loss during passing through this space. The loss ratio of blasting forces are different to this packing material of space like air, water, etc. In this study, the effect of packing materials is investigated by the numerical simulation analysis. The simulation is carried out to two phases; 1st phase is to compute the impacting forces reaching on the wall face passing through packing materials(air, water), 2nd phase is to study the blasting effect(block size of cracking, direction of driving forces, etc.) in real site. The reaching force at the wall face in the water is larger than in the air. This study shows that the water as packing materials is superior to the air.

수출용 목재 포장재의 주요 재료로 사용하는 소나무의 경우 소나무의 에이즈라고 불리는 재선충이 과거 수출포장용 목재 포장재를 통하여 전세계적으로 확산되었다. 이로 인하여 전세계적으로 재선충이 확산되었고, 현재 한국에서도 소나무 재선충에 대한 크나큰 홍역을 앓고 있다. 이에 따라 수출용 목재 포장재에 의해 전파되는 재선충의 확산을 방지하기 위한 세계 각국의 노력의 결과로 2002년 로마에서 국제연합식량농업기구(Food and Agriculture Organization: FAO)는 수출용 목재포장재에 대한 국제식물검역조치표준인 ISPM No.15를 제정하여 재선충 방지를 위한 노력을 기울이고 있다. 그와 더불어 세계 각국은 수출용 화물의 목재포장을 통한 재선충의 전 세계적인 확산을 방지하기 위하여 목재포장재에 대한 국제식물검역조치표준인 ISPM No.15의 표준안을 근거로 자국내 수입용 목재포장재의 수입에 대한 위생검역규정의 제정 및 검역을 보다 강화하려는 움직임을 보이고 있다. 중국 역시 2001년 ISPM No. 15의 규정을 자국에도 적용하는 법규를 제정하여 현재 중국으로 수입하는 모든 목재포장재에 대해서 위생검역에 준하여 훈증 위생처리 등의 위생검역을 요구하고 있다. 그러나 세계 각국의 위생검역의 규정과 관련 절차에 대한 내용들이 상이하고, 훈증 및 위생검역처리절차 등을 표준화하는 과정에 있어서 각국의 위생검역에 대한 절차와 규정에 대한 복잡성으로 인하여 한국제품의 해외수출에 어려움을 겪고 있다. 또한 이들 위생검역 규정은 재선충의 전세계적 방지를 위한 본래의 목적을 벗어난 전략적 통상목적하에서 비관세장벽의 기능을 할 수도 있다.

This study of the electrolysis reaction fillers and electrolytic treatment sludge generated by checking the status and properties of the sludge before and after electrolysis filler caused by a reaction to examine the water-soluble cutting oil sludge and organic matter removal mechanism of filling in the packed bed bipolar electrolytic reactor was to identify the characteristics. Delivery was analyzed using a SEM (scanning electron microscope) recording method for the filling material in the GAC surface characterization of the packed bed bipolar electrolytic reactor to look at the reaction of the waste water generated by the electrolytic removal reaction. Sludge generated in order to analyze the properties of XRD(x-ray diffraction) was analyzed using the device. The video of the GAC surface before and after the reaction was taken by SEM, it can be known indirectly the change between the voids in the GAC in figure before and after. Prior to the electrolytic treatment can be seen that there is some contamination between the pores, but it can be seen that after the treatment, rather than clean the pores of the GAC. This photograph of the surface after the electrolytic treatment, GAC is decomposed organic material adsorbed on the surface by dissolution of ions at the anode acting on bipolar electrolytic, it is corroded, it is possible to observe what happens. It was found to form iron oxide when analyzing the electrolytic sludge using XRD. Properties of the sludge generated after electrolysis, was composed primarily of oxygen and iron. These results wastewater treatment by filling in the electrolytic cell is that it indirectly proves to occur by electrolysis removal, it is considered to be able to demonstrate the deletion mechanism indirectly.

To develop optimal storage method of root of Anemarrhena Rhizome, which has been grown as major cultural herbal medicine material, root of Anemarrhena Rhizome was stored for 10 months with different packing materials and sealing methods. The loss in dry weight as influenced by packing materials and sealing methods was the lowest at vacuum packing and followed by complete sealing methods with transparent polyethylene film. The rot ratio of root during the storage period was not significantly different among packing materials but was significantly different among sealing conditions. Conclusively vacuum packing and complete sealing with polyethylene film appears to be optimal for storage of Anemarrhena Rhizome.

In this study a packed tower was selected for the treatment apparatus of NH3 gas produced in industry. Formerly, latticework packing has been used in preventive facility of treatment of NH3 gas. However, recently metallic Ralu-Pack 250YC, structured packing, is usually being used in petrochemical production plant. This study is for the application the packing to the NH3 gas treatment in wet scrubbing process. In Air/water system, hydraulic pressure drop dependent of specific liquid load and gas capacity factor was continuous and parallel from graph. The tower height can be determined by the number of transfer unit and the height of transfer unit influenced on liquid distribution.