• Journal of Korea Fishing Vessel Association
• /
• v.35
• /
• pp.12-20
• /
• 1988

• Journal of Korea Fishing Vessel Association
• /
• v.4
• /
• pp.14-19
• /
• 1980

• Journal of Korea Ship Safrty Technology Authority
• /
• v.18
• /
• pp.10-15
• /
• 2005

• Journal of Korea Fishing Vessel Association
• /
• v.60
• /
• pp.42-45
• /
• 1994

• Defense and Technology
• /
• no.8 s.8
• /
• pp.30-40
• /
• 1979

• The Safety technology
• /
• no.155
• /
• pp.58-61
• /
• 2010

• Journal of Korea Ship Safrty Technology Authority
• /
• v.19
• /
• pp.11-16
• /
• 2005

• Clean Technology
• /
• v.19 no.4
• /
• pp.464-468
• /
• 2013

In this study, in order to increase solid content of coal water fuel (CWF), various experimental parameters (i.e., coal type, additive, particle size distribution, drying method) were evaluated. To investigate the drying method, specimen is compared to using flash dry, fluidized bed dry and oil deposit stabilized coal. Difference of the solid content between low rank coal and high rank coal in this case indicate that high rank coal exhibits more higher than 20% of the solid cotent. And specimen for dispersibility was prepared by using dispersing agent of 4 types. As a result, using the dispersing agent was shown 5% higher in sold content than the case of not using the dispersing agent. Efficiency of CWF was improved by using fine coal of 80% in the particle size distribution of coal. Result of CWF using drying methods of 3 types, oil deposit stabilized (ODS) coal dried and stabilized was effective 12% higher in sold content than raw coal.

• The Journal of the Convergence on Culture Technology
• /
• v.8 no.1
• /
• pp.331-339
• /
• 2022

This study aimed to identify the prevalence of dry eye, sleep disorder, depression and factors related to dry eye among the elderly living in the community. Study subjects were 149 elderly, 65 years of age or older from nearby people, acquaintances and community elderly-related centers that researchers could access. Data collection period was from June 1 to August 31, 2021. Data were analyzed by frequency, percentage, mean, standard deviation, ANOVA, χ²-test, and multiple logistic regression. The results showed that dry eyes in elderly people were statistically significant according to age (χ²=4.50, p=.034), occupation (χ²=7.14, p=.008), chronic diseases (χ²=6.59, p=.010), drugs (χ²=4.86, p=.027), eye surgery (χ²=6.02, p=.014), and sleep disorders (χ²=7.29, p=.007). Multiple logistic regression revealed that dry eyes were associated with sleep disorders (OR=2.45, 95% CI=1.17-5.13). Therefore, for the management and prevention of dry eyes in the elderly, there is a need for nursing intervention and strategy that can find the causes of sleep disorders and improve the quality of sleep.

• Journal of the Korean Wood Science and Technology
• /
• v.32 no.2
• /
• pp.9-18
• /
• 2004

This study was carried out to find the efficient methods for preventing resin exudation from spruce board during high temperature environment service.In the dry-air oven test, in-use temperature related to resin exudation of 110℃ could be obtained by the appropriate kiln drying without any special treatment, and the in-use temperature of the radio-frequency/vacuum (RF/V)-dried boards was about 20℃ higher than that of the conventional kiln-dried boards.In the autoclave test, resin exudation was not found from any board dried in the conventional kiln and in the RF/V kiln after the low pressure steam explosion (SE) treating, while for the control resin exudations were more severe in the autoclave test above 130℃ than in the dry-air oven test. It, therefore, would be suggested that resin exudation during high temperature service condition can be prevented more effectively by super-heated steaming green boards than by high-temperature drying boards with low moisture.