• Title/Summary/Keyword: SoMun

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A Study on the Costume of Geometric Pattan in Edo Period (강호시대(江戶時代) 복식에 나타난 기하학문양에 관한 고찰)

  • Park, Kyoung-Mee;Park, Ok-Ryun
    • Korean Journal of Human Ecology
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    • v.13 no.5
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    • pp.799-809
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    • 2004

  • Our study found that the types and forms of patterns of Japan, although they are similar to those of Korea and China, hold their own distinctive aesthetic awareness. They were made so, because the Japanese had not simply copied the patterns from other countries and also had changed them in various ways for ages. Especially, geometric patterns were widely used on some types of kimono costumes and belts in Edo period. One of the most widely used patterns was called Suk Chup Mun, and Tatewaku pattern was another. The San Gil Mun and Chil Bo Mun pattern was least used. In the patterns combination, that of animal and plant patterns was general. A single geometric pattern was not used, but if any, it was in Sima patterns and latticed patterns. On the other hand, the combination of geometric and plant patterns was more frequently used as composite patterns than any other pattern, such as geometric pattern with home tools, or one with animal patterns or nature patterns. The geometric patterns that had appeared in Edo period were combined in paintings along with animal and home tools patterns, so it could become a representative pattern of the age.

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A Study on Prevention of Fouling Formation by Reduction Reaction of CaSO4 in a Biomass Circulating Fluidized Bed Combustion (바이오매스 순환유동층 연소에서 CaSO4 환원반응에 의한 파울링 발생 방지 연구)

  • Seong-Ju Kim;Sung-Jin Park;Sung-Ho Jo;Se-Hwa Hong;Yong-Il Mun;Tae-Young Mun
    • New & Renewable Energy
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    • v.19 no.1
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    • pp.1-11
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    • 2023

  • A large amount of carbon monoxide (CO) is generated in circulating fluidized bed combustion, the process whereby a hot cyclone separates unburned fuel. However, calcium sulfate (CaSO4), when combined with a high CO content, can cause fouling on the surface of the steam tube installed inside the integrated recycle heat exchangers (INTREX). In this study, CaSO4 decomposition was investigated using 0.2-3.2 vol.% CO and 1-3 vol.% oxygen (O2) at 850℃ for 20 min in a lab-scale fluidized bed reactor. The results show that CaSO4 decomposes into CaS and CaO when CO gas is supplied, and SO2 emissions increase from 135 ppm to 1021 ppm with increasing CO concentration. However, the O2 supply delayed SO2 emissions because the reaction between CO and O2 is faster than that of CaSO4; nevertheless, when supplied with CaCO3, the intermediate product, SO2 was significantly released, regardless of the CO and O2 supply. In addition, agglomerated solids and yellow sulfur power were observed after solid recovery, and the reactor distributor was corroded. Consequently, a sufficient O2 supply is important and can prevent fouling formation on the INTREX surface by suppressing CaSO4 degradation.

  • https://doi.org/10.7849/ksnre.2023.2039 인용 PDF

The Characteristic of Mun Il-pyeong's Modern History, Joseonhak Campaign (문일평(文一平) 근대사학(近代史學)의 본령(本領), 조선학운동(朝鮮學運動))

  • Park, Sung-soon
    • (The)Study of the Eastern Classic
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    • no.50
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    • pp.29-54
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    • 2013

  • Mun Il-pyeong(1888-1939) is famous for a nationalist historian led history into popular style to enlighten the public. This paper aims to overview the characteristic of Mun Il-pyeong's history based on prior studies on Mun Il-pyeong's works. The characteristic of Mun Il-pyeong's history shows us people centric trend based on a struggle of classes. For the people, he insisted that description of history should be easy and scientific for the people who are host of history. And Mun Il-pyeong insisted the harmony of nationalist history and positive history. This was a progressive attitude in writing history at that time. Another characteristic of Mun Il-pyeong's history is that he considered cultural history as important. Mun Il-pyoeng wanted to overcome the ashamed political history by cultural history. In this intention, Korean history was again born proudful by him. Mun Il-pyoeng pursued open nationalism, not ultra-nationalism by connecting with other world. This paper focused on the essential part of Mun Il-pyoeng's history. Many scholars think Mun Il-pyeong focused on Korean modern history or history of foreign relation. But I think Mun Il-pyeong attached importance to Practical Learning, Sirhak in late Joseon dynasty. Because Sirhak contained Mun Il-pyeong's academic intention, Modernism and Culturism dreamed from his youth age. Therefore he led so-called Joseonhak Undong meaning study of Sirhak. Studying Sirhak made Mun Il-pyeong open a new direction Korean modern history have to go.