• Journal of Korea Foresty Energy
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• v.21 no.3
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• pp.28-33
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• 2002

This study was carried out to develop the technique for the production of high quality container seedlings of Comus controversa Hemsley. The seedlings were grown on the medium of peatmoss : perlite : vermiculite (1:1:1, v/v) in plastic net container and no-net plastic container as control for five months in the PE house. The seedlings grown in the plastic net container showed better root collar diameter growth, better development of long and fine roots, more increment of dry mass of roots and shoots than those grown in the no-net container. But the height growth of the seedlings in both container was similar. In particular the seedlings grown in plastic net container had no spiraling roots which were always observed in the control container seedlings. This result was induced by air-root pruning effect from the plastic net container.

• Journal of Bio-Environment Control
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• v.14 no.4
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• pp.239-244
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• 2005

This study was carried out to investigate the growth characteristics and root development of Mandshurian Linden (Tilia mandshurica Rupr. et Max.) seedlings grown in plastic net container and plain plastic container. The seedlings were grown in the mixture of peatmoss perlite : vermiculite (1:1:1, v/v/v) for five months in the plastic greenhouse. The seedlings grown in plastic net container showed greater root collar diameter growth, better root development, and more increment of root dry mass than those grown in the plain plastic container. In particular, the seedlings grown in plastic net container had no spiraling roots which were always observed in the control . These results suggest that the net container is suitable for container culture of Tilia mandshurica seedlings by enhancing root development. Seedlings grown in the net container and transplanted to various environments showed vigorous rootage and growth.

• Pallet News
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• s.23
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• pp.18-20
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• 2001

• The monthly packaging world
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• s.343
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• pp.60-62
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• 2021

• Analytical Science and Technology
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• v.13 no.6
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• pp.743-750
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• 2000

For the ${\gamma}$-ray spectrometry analysis of radium and radon in environmental samples, plastic Marinelli beakers have been usually used. But, there are two problems; one is the increment of background by adsorption of airborne radon daughters on the plastic beaker, and other is the incompleteness of radioactive equilibrium by the loss of gaseous radon produced during the radioactive equilibrium process. In order to solve these problems, we made aluminium counting container, and investigated its characteristics. We investigated radioactive equilibrium process using the aluminium container. We found that both solid and liquid samples reached at radioactive equilibrium state in the aluminium container without loss of gaseous radon. By the use of the aluminium container, we established radon and radium analysis method of solid and liquid samples using gamma-ray spectrometry.

• Journal of Navigation and Port Research
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• v.46 no.4
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• pp.331-337
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• 2022

In 2021, the Joint Group of Experts on the Scientific Aspects of Marine Environmental Protection (GESAMP), a U.N. advisory research institute, cited container loss as one of six sources of marine litters in shipping. The sinking of the X-P ress Pearl in May 2021 caused a catastrophic environmental pollution accident in which the loaded containers were moved to the shore, and the plastic pellets were loaded inside covered the coast of Sri Lanka. With this history, the International Maritime Organization (IMO) will discuss prevention and follow-up measures for container loss during ship voyages, as an agenda at the 8th Sub Committee on Carriage of Cargoes and Containers meeting in September 2022. To establish Korea's response direction at the IMO meeting, this study identified major causes of container loss accidents, and considered the response through analysis based on the accident investigation report and related professional data. As a result, it was found that the major cause of container loss during voyages was the enlargement of container ships, bad weather, and poor loading of containers. In particular, the need to prepare countermeasures for the deterioration of the operational safety of large container ships due to bad weather was identified. Additionally, integrated monitoring of the implementation of international conventions is required, for the safe sea transportation of container cargo. In particular, in terms of preservation of the marine environment, it is necessary to supplement the system for the recovery of lost containers. Finally, it was found that it is necessary to establish systems that can complement each other in the shipbuilding and shipping industries, in terms of shipbuilding as well as ship operation, to fundamentally prevent container loss accidents at sea. It is judged that it is difficult to resolve the various factors of container loss at sea during voyages, by responding from an individual perspective.

• Korean journal of food and cookery science
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• v.14 no.1
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• pp.21-24
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• 1998

The purpose of this study was to evaluate the microbiological quality of kitchen utensils in institutional foodservices in Seoul. Total plate count of plastic container, knife, wiping clothes and cutting board are 1${\times}$$10^3$-1${\times}$10/sup/5(CFU/100 $cm^2$). There were many coliforms in plastic container (2${\times}$$10^1$CFU/100 $m^2$), knife (2-3${\times}$$10^1$CFU/100 $cm^2$), wiping clothes (4-6${\times}$$10^1$CFU/100 $cm^2$) and cutting board (4-9${\times}$$10^1$CFU/100 $cm^2$). The results of microbiological test of kitchen utensils indicated that the sanitary conditions of plastic container, knife, wiping clothes and cutting board should be improved promptly. Electron microscopic observation showed that there were too many bacteria in plastic containers.

• The monthly packaging world
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• s.243
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• pp.108-114
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• 2013

• The monthly packaging world
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• s.361
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• pp.88-93
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• 2023

• The monthly packaging world
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• s.360
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• pp.95-100
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• 2023