• Title/Summary/Keyword: Hwang Sang

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Theoretical study of Sa-sang constitutional medicine in the view of evolution (사상체질의학의 진화론적 고찰)

  • Chi, Sang-Eun;Cho, Hwang-Sung
    • Korean Journal of Oriental Medicine
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    • v.3 no.1
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    • pp.105-118
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    • 1997

  • Through the theoretical study on Sa-sang constitutional medicine from a evolutionary point of view, the result was obtained as follows. 1. The system of Sa-Sim-Sin-Mul(事心身物) in Sa-sang constitutional medicine is similar to the theory of evolution of Teilhard de Chardin. 2. The concept of Yin and Yang in Sa-sang constitutional medicine can be set up by the demand and necessity in the progress of evolution and the time of the differentiation of functions. 3. The Sung-Jung(性情) of each Sa-sang constitution can be explained as the strategy and form for survival. 4. The theory of physiology, pathology and therapy in Sa-sang constitutional medicine can be hypothesized by the evolutionary standards which are related with the thermo-metabolism and hematopoietic-immune system.

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The Anti-allergic Effects of Kum-Hwang-San on Acute Cutaneous Dise ases in Experimental Animal Models (實驗動物모델에서 金黃散의 急性 皮膚 疾患에 對한 抗알레르기 效果)

  • Lee, Kwan-soon;Kim, Jong-han;Hwang, Choong-yeon;Lim, Gyu-sang
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.11 no.1
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    • pp.40-53
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    • 1998

  • Mast cells play an important role in the pathophysiologlcal changes observed in acute cutaneous and inflammatory diseases In order to see whether Kum-Hwang-San has an influence on mast cell- mediated immediate cutaneous reactions, the author has undertaken an animal study. Ears of mice were treated with a compound 48/80 solution topically at 30 min after the cutaneous application of Kum-Hwang-San. At each point, an ear swelling response was measured with a digimatic thickness micrometer. Ear swelling response induced by compound 48/80 was significantly suppressed dose-dependently by Kum-Hwang-San 30 min before topical application as compared with that in nonapplicated control mice, and the value returned to normal levels by 120 min. Compound 48/80- induced mast cell degranulation by Kum-Hwang-San was also remarkably decreased in accordance with the suppression in ear swelling response. Kum-Hwang-San dose-dependently inhibited histamine release from the rat peritoneal mast cells activated by compound 48/80. Another way to test acute cutaneous reaction is to induce passive cutaneous anaphylactic reaction. Kum-Hwang-San significantly inhibited passive cutaneous anaphylactic reaction activated by anti-dinitrophenyl IgE on both topical application and intradermal injection. Kum-Hwang-San also inhibited histamine release from the rat peritoneal mast cells induced by anti-DNP IgE. This study provides evidence that Kum-Hwang-San will be beneficial in the treatment of acute cutaneous diseases.

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A Study on the Armillary Spheres of the Confucianists in Joseon Dynasty

  • Lee, Yong-Sam;Kim, Sang-Hyuk;Lee, Min-Soo;Jeong, Jang-Hae
    • Journal of Astronomy and Space Sciences
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    • v.27 no.4
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    • pp.383-392
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    • 2010

  • Armillary sphere, generally known as, not only astronomical instrument for observing astronomical phenomena but also symbolizes the royal authority and royal political ideology which is based on Confucianism. Among the well-reputed Confucian scholars were built their own armillary spheres. However, these armillary spheres which exist are damaged and most of parts of its have been lost. We analyzed and measured the remnants of armillary spheres which were made by Toegye Lee Hwang, Uam Song Si-Yeol and Goedam Bae Sang-Yeol who were well-reputed Confucian scholars in Joseon Dynasty, and have been executed the restorations of Toegye Lee Hwang and Song Si-Yeols armillary sphere based on the drawings which were drawn as the original form by analysis and measurement of its remnants.

  • https://doi.org/10.5140/JASS.2010.27.4.383 인용 PDF KSCI

Cost-Effective Single Switch Multi-Channel LED Driver

  • Hwang, Sang-Soo;Hwang, Won-Sun;Han, Sang-Kyoo
    • Journal of Power Electronics
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    • v.15 no.2
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    • pp.319-326
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    • 2015

  • In this paper, a cost-effective single switch multi-channel LED (light emitting diode) driver is proposed. While conventional LED drivers require as many non-isolated DC/DC converters as the number of LED channels, the proposed LED driver needs only one power switch and several balancing capacitors instead of expensive non-isolated DC/DC converters. Therefore, the proposed driver features a simpler structure, with a lower cost and a higher efficiency. Because its power switch can be turned off under the zero current switching condition, it has very desirable advantages such as improved electromagnetic interference characteristics and high efficiency. Moreover, it uses only a small number of DC blocking capacitors with no additional active devices for the current balancing of multi-channel LEDs. As a result, the proposed driver exhibits high reliability and is cost effective. To confirm the validity of the proposed driver, a theoretical analysis is performed, and design considerations and experimental results obtained from a prototype that is applicable to a 46" LED-TV are presented.

  • https://doi.org/10.6113/JPE.2015.15.2.319 인용 PDF KSCI KPUBS HTML