• (The) Research of the performance art and culture
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• no.35
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• pp.441-470
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• 2017

This paper deals with three issues related to influx and change of the Confucian Shrine Ritual Music. First, the musical instrument of the Akhakgwebeom-wooden frame-form used in the current Confucian Shrine Ritual Music is not a form that came in when the Daesung-Aak of the Song Dynasty was introduced in 1116, but it is a Yuan Dynasty form brought from the Ming Dynasty, in the 19th year of King Kongmin. In the Song Dynasty of the Goryeo Yejong era, when Daesung-Aak came in, there was not yet 'Baeso', a musical instrument of the Akhakgwebeom form, which first appeared in the Yuan Dynasty. A new musical instrument named 'Baeso' appears with the 'So' in the later period of King Gongmin, and it is very likely that this 'Baeso' is the musical instrument of the present Akhakgwebeom form. Second, although the form of the 'So' in the Joseon Dynasty recorded in the Akhakgwebeom was followed by the Chinese one, but the pitch and arrangement are the one of the pitch of '12 Yul and 4 Cheongseong' and the arrangement of the pitch from left to right. Third, in the 1930s, the whole form was the same as that of the Akhakgwebeom, but there existed two types, which several pipes stick together or pipes fall apart. But since then, as seen in the musical instrument located at Kyungpook National University Museum and in instruments currently used in Confucian Shrine Ritual Music, only musical instruments exist which pipes fall apart. It is unclear for what reason and to what extent the 'So' were so transformed, but it would be appropriate to re-establish the form of the 'So' in the musical and historical point of view.

• The Korean Journal of Food And Nutrition
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• v.36 no.3
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• pp.202-208
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• 2023

FT-IR, GC/MS, and ATR-FT-IR analyses were performed to confirm the physicochemical characteristics of saw palmetto fruit (SPF) extract. FT-IR analysis of the standard product showed that the band corresponding to the carbonyl bond of free fatty acid was stronger than the band of acyl-glyceride. Sample E was identified as having the same trend as the standard sample. Fatty acid composition analysis revealed that the main fatty acids in the standard sample were lauric acid and oleic acid. The content of lauric acid ranged from approximately 30% to 38% in samples B, C, D, and E, while the content of oleic acid ranged from approximately 29% to 34%. The GC/MS analysis confirmed that the standard SPF extract consisted of fatty acids and fatty acid ethyl esters. Sample E demonstrated a similar pattern to the standard samples in terms of oleic acid, lauric acid, and fatty acid esters. ATR-FT-IR analysis indicated that only sample E was predicted to contain 100% saw palmetto extract. Therefore, these study findings can be considered fundamental data for analyzing the physicochemical characteristics of the composition of SPF extract.

• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.5
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• pp.763-769
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• 2013

This study aims to compare the effects of pure resistance exercise and resistance exercise added aerobic exercise for enhancing muscle strength of the femoral region and provide the evidentiary materials of an exercise program for improving muscle strength in clinical setting. Muscle activity of rectus femoris showed statistically significant differences after experiment compared to before experiment in the two groups and resistance exercise added aerobic exercise group showed statistically significant difference compared to pure resistance exercise group in group comparison according to the period of measurement. Thickness of rectus femoris showed no significant difference after experiment compared to before experiment in both groups, but resistance exercise added aerobic exercise group showed statistically significant difference after experiment compared to before experiment in group comparison according to the period of measurement. In conclusion, it was found that aerobic exercise after resistance exercise was more effective in enhancing muscle activity and thickness than pure resistance exercise for enhancing muscle activity.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.40 no.9
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• pp.577-587
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• 2016

Although the formation of oxy-fuel MILD combustion is considered one of the promising combustion technologies for high thermal efficiency, low emissions and stability have been reported as difficulties. In this paper, the effect of combustor geometry and operating conditions on the formation of oxy-fuel MILD combustion was analyzed using numerical simulation. The results show that the high temperature region and average temperature decreased due to an increase in oxygen inlet velocity; moreover, a high degree of temperature uniformity was achieved using an optimized combination of fuels and an oxygen injection configuration without external oxygen preheating. In particular, the oxy-fuel MILD combustion flame was found to be very stable with a combustion flame region at equivalence ratio 0.90, fuel velocity 10 m/s, oxygen velocity 200 m/s, and nozzle distance 33.5 mm.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.34 no.11
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• pp.957-964
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• 2010

The deflagration-to-detonation transition (DDT) causes a strong pressure wave that can adversely affect surrounding structures. The pressure generated by multiple detonative pulses is strong enough to cause metal surface erosion and chipping of the edges of bulk structures. In this study, we investigate the damage caused by the DDT phenomenon and perform hydrocode simulations to evaluate the structural damage caused to a metallic pulverized-coal injector used in a pulverized-coal-oxygen combustion furnace. The experimental conditions are selected in order to accurately model the damage caused to metal injectors that are exposed to multiple DDT pulses.

• The Journal of the Korea Contents Association
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• v.14 no.3
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• pp.509-521
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• 2014

The purpose of this study is to find the correlation between elements of resilience and small group activities in the university, and to explore small group activities as a protective and a positive factor in controlling the stress of college students. As the first part of the study, positive roles of resilience to the stress of college students and the elements that promote the efficiency of resilience are analyzed. The study precedent in detail and four elements of resilience are presented as following; optimistic realism, vitality, ability to control emotion, and interpersonal ability, addressing the faith in God is one of the strong positive factors for developing resilience. Then, this study deals with how the four elements of resilience relates to the characteristics of small group activities. In conclusion, this study suggests Christian universities to develop small group activities because they can develop each of the four elements of resilience of college students. Christian universities have a missional duty and the responsibility to help college students experience real happiness in their lives. Therefore, if Christian universities understand the effectiveness of resilience of college students and find out the correlation between resilience and faith, they can help students not only to live a positive life in their generation, but also to experience the authentic happiness.

• The Journal of Engineering Geology
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• v.25 no.2
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• pp.281-290
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• 2015

Log density data were collected and compared with the core density data throughout the southern Korean Peninsula. The comparison reveals that the log densities obtained from gamma-gamma log are much lower than the core densities obtained from laboratory density measurement of core samples. The anomalously low log densities can be attributed to the small-source density log data. Correlation analysis reveals differences between densities derived from the two methods, indicating that a data quality problem arises when using small-source log data. The problem is probably due to the fact that small-source data have not been obtained under ideal conditions for maintaining the appropriate relationship between gamma response and formation density. The frequency distribution characteristics of formation density in the southern Korean Peninsula could be determined using the core and the standard-source log data which are well-correlated.

• Journal of Sericultural and Entomological Science
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• v.30 no.2
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• pp.96-104
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• 1988

Vitellin, the major yolk protein of the silkworm, Bombyx mori was pruified, and its immunological properties and the quantitative changes during embryogenesis were studied. The ovary transplantation into male hosts was also carried out to find its effect on the yolk protein synthesis. The pupal vitellogenin and the egg vitellin of Bombyx mori were purified by DEAE-cellulose column chromatography. These two female specific proteins showed the same mobility in the polyacrylamide gel electrophoresis and the same reaction in the double immunodiffusion test. The immunological identity was also observed between the vitellins of Bombyx mori and Bombyx mandarina. The rudimentary ovaries transplanted into the male hosts of silkworms produced eggs without vitellin, indicating that the yolk precursors synthesized in other female organ beyond the ovary were necessary to produce vitellins. The major yolk protein, vitellin was disintegrated and utilized mostly during late stage of embryogenesis. It was different characteristics from the egg specific protein, which was utilized continuously from the early embryonic stage.

• The Journal of the Acoustical Society of Korea
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• v.22 no.3
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• pp.224-232
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• 2003

In this paper, efficient deployment method of sensors and target positioning performance with respect to measurement error are dealt with. Active sonar can be categorized into Monostatic, Bistatic, Multistatic sonar, and characteristics of respective sonar are different. Assuming that each sensor can receive range and angular information, we compare the performance of Monostatic, Bistatic, and Multistatic systems. And we suggest Weighted least square (WLS) which gives the weight to former case, LS. In particular. adopting suggested method we investigate the target positioning performance according to number of sensor, distance from transmitter to receiver, and propose efficient arrangement rule for Multistatic sonar configurations. According to the experimental results, RMSE of Multistatic sonar is found to be superior to Monostatic and Bistatic by 35.98%. 37.45% respectively, and WLS is superior to LS approximately by 7.4% in average. Furthermore, as the difference of respective sensor's variance is large, it is observed that the improvement ratio of target positioning performance is increased.

• 한국생물공학회:학술대회논문집
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• 2000.11a
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• pp.321-324
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• 2000

The Effect of pH red pigment production by Monascus purpureus ATCC 16365 has been studied in pH-controlled batch fermenter culture. A maximum of yellow and red pigments were detected using UV-Vis spectrophotometer at 385nm and 495nm, respectively. Fungal growth and pigment production were favoured at low pH(pH 4.0-5.5). Especially extracellular formation rate of orange to yellow pigment was decreased compared with that of orange to red pigment at pH 7.0. In addition, the enhancement of ratio of extracellular to intracellular pigment and the red pigment production in pH 7.0-controlled batch fermenter was observed. However, the pH 7.0-controlled batch cultures depressed the total production of pigments. The pH change from 4.0 to 7.0 during batch fermenter cultivations sharply increased both red pigment production and the extracellular composition.