• The Korea Swine Journal
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• v.12 no.11 s.135
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• pp.119-123
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• 1990

• KOREAN POULTRY JOURNAL
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• v.52 no.6
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• pp.150-155
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• 2020

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.12
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• pp.8901-8907
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• 2015

Conventional streetlight with the not-adjustable light distribution characteristic is generating light pollution such as glare, damage to the crops and disturbed sleep, because beam of streetlight is not distributed evenly according to the surrounding areas and road conditions. In this paper, we proposed the new structure LED streetlight controlled light irradiation angle according to the surrounding areas and road conditions. Proposed LED streetlight are available to the adjustable light distribution characteristic using the half-circle angle control device. Result of measurement and simulation, beam angle is made available to control at least from $100^{\circ}$ up to $154^{\circ}$, average illumination exceeded 15% of KS regulation and overall uniformity exceeded more than 50% of KS regulation. the Developed large capacity LED streetlight luminaire is considered to minimize glare and light pollution and optimize uniformity ratio of illuminance.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.7
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• pp.58-62
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• 2017

In this study, the design conditions for the Korean-style glass greenhouse structure has been reduced to achieve the most efficient use of natural light. The AGI program was simulated for the optimal conditions of daylight in a glass greenhouse. From the results of daylight simulation, the axis position of the glass greenhouse's roof was not an important factor in the daylight effects regarding illumination and uniformity. In summer, there were long periods of daylight and high illumination levels. The illumination value of daylighting increased with increasing glass transparency value, and the illumination value was greatest at 14:00 hours. At this time, the rate of light variation according to the glass transparency was 89 [lux/%]. In addition, the optimal design conditions for the glass greenhouse were established, which were a $30[^{\circ}]$ or $150[^{\circ}]$ installation angle and higher transmittance of glass.

• Journal of Science and Technology Studies
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• v.18 no.1
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• pp.63-127
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• 2018

This paper discuses how toxic humidifier disinfectants were produced and distributed by bypassing tightly regulated laws from 1994 when the first humidifier disinfectant was made until 2011 when it was found to be the cause of the untreated interstitial lung disease. Rather than presupposing immoral entrepreneurs or incompetent civil servants as the cause of this disaster, this paper focuses on the bureaucratic character of the corporate organization that sold the humidifier disinfectant and the government that approved it, and shows that communication in these bureaucratic organizations was hampered and thus defective. It emphasizes the fact that the bureaucracy and secrecy of these organizations are the major cause of the humidifier disinfectant disaster. An analysis of the bureaucratic characteristic of the organization can reveal what improvements should be made in the corporation and in the government in order not to recur this disaster.

• Conservation Science in Museum
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• v.6
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• pp.39-46
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• 2005

The National Museum of Korea has a collection of various materials. In particular, items made from organic materials such as wood, paper, and leather are vulnerable to the influence of insects and germs, requiring fumigation as well as pesticides and bactericides. The influence of pesticides and bactericides on the change in dyed paper was examined by applying the oddy test used to confirm the toxicity of various materials used in museums. Results revealed that the products of B and H companies had the least influence on the change in dyed paper. On the other hand, the result of the examination of cochineal and curcuma dyed paper revealed a significant change in the control group compared to the one exposed together with dyed paper, probably because of humidity rather than the sample.

• Journal of The Korean Society of Grassland and Forage Science
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• v.19 no.1
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• pp.41-48
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• 1999

This experiment was carried out to determine the effect of the silage additives on improvement of quality of fresh rice straw silage using round bale at the forage experimental field, grassland and forage crops division, National Livestock Research Institute, RDA, Suwon from 1997 to 1998. The experiment was arranged in a randomized block design with three replication. The treatments used in this study were consisted of different additives(control, formic acid, molasses, molasses+urea and inoculant). The rice straw silage with molasses+urea treatment resulted in high crude protein content and in vitro dry matter digestibility were increased with molasses of inoculant treatments compare with the control. The mean dry matter of formic acid treatment material was higher than with control but there was no significant difference in dry matter content among the additives treatments. The pH of molasses treatments significantly increased the proportion of lactic acid(P<0.05) and decreased the proportion of butyric acid. The total organic acid content of all treatments had low around 2%. Ammonia-N of molasses+urea treatment was significantly(P<0.05) higher than that of others, but formic acid or inoculant treatments was lower below 10% per total nitrogen. Over a 7d feeding period, the dry matter intake per cattle on the inoculant treatment was higher that on both the untreated round bale silage of fresh rice straw and rice straw hay. Producing cost per kilogram of round bale silage of fresh rice straw was decreased according to the increasement of harvesting area. It is suggested that application of round bale silage system to fresh rice straw with molasses or inoculant was the best treatment for improving preservation as silage, and that animal intake was enhanced by addition of inoculant to fresh rice straw.

• Proceedings of the Korean Fiber Society Conference
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• 1999.04a
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• pp.120-123
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• 1999

• Journal of the korean veterinary medical association
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• v.50 no.12
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• pp.713-717
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• 2014

• 대한치과보철학회:학술대회논문집
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• 1994.12a
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• pp.52-52
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• 1994