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P32 추적자법(追跡子法)에 의한 토양의 유효 인산정량법에 관한 연구(Ⅱ)
박훈,이춘영 한국농화학회 1970 Applied Biological Chemistry (Appl Biol Chem) Vol.13 No.1
The present study has been undertaken to see if any proper measure be found for the determination of available phosphorus by chemical extraction on the basis of A-values as the standard. The results obtained are described as follows. 1. Since A-value of the samples under study showed a significant correlation with Fe-P at 1% level. The available phosphorus in the present paddy soils was considered to be affected by Fe-P. 2. Six methods for chemical extraction were not correlated with the determination of Fe-P, proving them inadequate for the quantitative measurement of available phosphorus. 3. Adequate method for extracting available phosphorus in paddy soils should rest on the measurement of the reduction intensity of Fe-P. The extractable intensity was estimated to be 270 ppm in average. 4. Bray No. 2-P showed significant correlation with Lancaster-P, Spurway-P, Truog-P, and (Ca+Al)-P at 5% level. Olsen-P and Lancaster-P indicated significant correlation with Al-P and Spurway-P with Ca-P respectively at 1% level.
관 단면형상 변화에 따른 열전달 특성에 관한 수치해석적 연구
박훈채(Hun Chae Park),최항석(Hang Seok Choi),김석준(Seock Joon Kim) 대한설비공학회 2012 설비공학 논문집 Vol.24 No.7
Numerical study has been carried out to investigate heat transfer and pressure drop characteristics for streamlined shape tubes. The flow and thermal fields are investigated with varying diameter ratio of the tube ranging from 0.4 to 2.5 and Reynolds number ranging from 10,000 to 30,000. The results show that heat transfer per unit fan power is maximum at D2/D1 = 0.8. Furthermore, the heat transfer per unit fan power of streamlined shape tubes was compared with circular tube. The heat transfer per unit fan power of streamlined shape tube was larger than that of circular tube.
박훈평(Hun Pyeng Park),안상우(Sang Woo Ahn) 한국의사학회 2017 한국의사학회지 Vol.30 No.1
Although Maejeong-Bogam (梅亭寶鑑) is a manuscript, it has attracted considerable attention from academia because of the clear authorship and relevant treatment methodologies. This article is the result of an extensive study on the author and the contents of the manuscript through the use of various data. This article revealed facts which include: 1) Author HAN Bangryeol (韓昉烈) is a Confucian doctor who lived in Namwon area, Jeolla province of Korea. 2) Dr. HAN’s other manuscript of Bongseong-Shinbang (鳳城神方) was written before 1814. 3) Maejeong-Bogam (梅亭寶鑑) collects pediatric medical records only and is focused on outbreaks and treatment of smallpox among children. 4) Smallpox was a national concern in the late Joseon Dynasty and doctors of the day developed corresponding therapies. 5) Smallpox Inoculation was carried out in Jeolla Province as early 19th in Korea.
박훈평(Hun Pyeng Park) 한국의사학회 2014 한국의사학회지 Vol.27 No.2
The medical bureaucrats was awarded by Wonjong (原從) meritorious retainer were 376 peoples in the Joseon Dynasty. It was not done research on this is accurate so far. Why did they get Wonjong (原從) meritorious retainer? I have found a general rule of the investiture through review of the nokhundogamuigwe (錄勳都監儀軌). The Sillok(實錄) and other materials were used as an adjunct in the investigation. Through the analysis of this medical bureaucrats, This study aims to investigate the change in the social status of the Joseon Dynasty's medical officials. The conclusion of this paper is as follows. First, the social status of medical bureaucrat was similar to that of yangban (兩班) in early days of Joseon Dynasty compared with mid or late days of Joseon Dynasty. Second, bastard households are concentrated in the second half of the 16th century to the early 17th century to advance to the medical officials. Third, acupuncture doctors increased social status by the mid-Joseon Dynasty. Fourth, statutes about Wonjong (原從) meritorious retainer was raising the social status of medical bureaucrat compared to other technical officials.