• Title/Summary/Keyword: Park Jung-Yang

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THE GROWTH OF GaN/POROUS-Si USING BY MEB

  • Park, S.H.;Chi, C.S.;Park, C.S.;Lee, C.M.;Yang, S.J.;Jung, W.H.;Kang, T.W.;Yoon, G.S.;Kim, C.O.;Eom, G.S.
    • Proceedings of the Materials Research Society of Korea Conference
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    • 1998.08a
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    • pp.94.1-94
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    • 1998
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Identification of new ligands for RNA pseudoknot by structure-based screening of chemical database

  • Park, So-Jung;Jeong, Seung-Hyun;Kim, Yang-Gyun;Park, Hyun-Ju
    • Proceedings of the PSK Conference
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    • 2003.04a
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    • pp.254.2-254.2
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    • 2003
  • For many viruses, -1 ribosomal frameshifting regulate protein synthesis using an RNA pseudoknot. The integrity of pseudoknot stability and structure is the important feature for efficient frameshifting. Thus, small molecules interacting with viral RNA pseudoknots would be potential antiviral agents targeting\ulcorner frameshifting system in viruses. X-ray structure of RNA pseudoknot complexed with biotin has been reported, in which biotin is bound at the interface between the pseudoknot's stacked helices. (omitted)

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Effect of a surface oxide-dispersion-strengthened layer on mechanical strength of zircaloy-4 tubes

  • Jung, Yang-Il;Park, Dong-Jun;Park, Jung-Hwan;Kim, Hyun-Gil;Yang, Jae-Ho;Koo, Yang-Hyun
    • Nuclear Engineering and Technology
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    • v.50 no.2
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    • pp.218-222
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    • 2018
  • An oxide-dispersion-strengthened (ODS) layer was formed on Zircaloy-4 tubes by a laser beam scanning process to increase mechanical strength. Laser beam was used to scan the yttrium oxide ($Y_2O_3$)-coated Zircaloy-4 tube to induce the penetration of $Y_2O_3$ particles into Zircaloy-4. Laser surface treatment resulted in the formation of an ODS layer as well as microstructural phase transformation at the surface of the tube. The mechanical strength of Zircaloy-4 increased with the formation of the ODS layer. The ring-tensile strength of Zircaloy-4 increased from 790 to 870 MPa at room temperature, from 500 to 575 MPa at $380^{\circ}C$, and from 385 to 470 MPa at $500^{\circ}C$. Strengthening became more effective as the test temperature increased. It was noted that brittle fracture occurred at room temperature, which was not observed at elevated temperatures. Resistance to dynamic high-temperature bursting improved. The burst temperature increased from 760 to $830^{\circ}C$ at a heating rate of $5^{\circ}C/s$ and internal pressure of 8.3 MPa. The burst opening was also smaller than those in fresh Zircaloy-4 tubes. This method is expected to enhance the safety of Zr fuel cladding tubes owing to the improvement of their mechanical properties.

A Study on the Three Yin Diseases(三陰病) in the 『Shanghanlun(傷寒論)』 -Focusing on Prognosis Analysis- (『상한론(傷寒論)』 삼음병(三陰病)에 대한 연구(硏究) - 예후 분석을 중심으로 -)

  • Park, Sang-Kyun;BANG, Jung-Kyun
    • Journal of Korean Medical classics
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    • v.34 no.1
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    • pp.47-65
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    • 2021
  • Objectives : An accurate judgment of prognosis when treating diseases is crucial. While the 『Shanghanlun(傷寒論)』 deals with the prognosis of the Three Yin Diseases with great importance, full-scale studies have been lacking. This paper aims to study the Three Yin Diseases with a focus on prognosis analysis. Methods : Among the Three Yin Disease verses, those that could provide clues to prognosis were selected and analysed. Conclusions & Results : When Yang pulse patterns such as long(長脈)·floating(浮脈)·rapid(數脈) pulses and Yang symptoms such as fever, vexing heat, mild perspiration, thirst, warmth in hands and feet are present in Yin disease, it could be taken as signs of Yang Qi restoration. In these situations, Yin Cold pattern such as diarrhea and reversal cold disappear and the prognosis is positive. However, despite Yang pulse patterns and symptoms, there are cases where diarrhea happens as a result of cold dampness being eliminated due to Yang Qi restoration. Also, when Yang Qi starts communicating smoothly after its restoration in the Three Yin Diseases, perspiration can happen. When diarrhea and reversal cold, which are patterns of Yin Cold get worse, with pulse patterns such as unfelt(脈不至)·replete(實脈)·fulminating(脈暴出) pulses, false heat symptoms such as fever and hot flashes happen, accompanied with Yang Qi depleted symptoms such as inability to lie down due to agitation, continuous perspiration, sore throat, dyspnea, and exaggerated breathing happen. When fast pulse, fever, and perspiration are present due to depression and stagnation of ministerial fire, symptoms such as bloody stool with pus, purulent abscess, sore throat, and inability to lie down due to agitation show, which signal negative prognosis. In bad cases of Reverting Yin Disease, there is continuous diarrhea and bloody stool with pus, which can be due to either Kidney Yang deficiency or depression and stagnation of ministerial fire. It could also be caused by excessive heat.

A Study on the Concept of the Right and the Left in Oriental Medicine (한의학(韓醫學)의 좌우이론(左右理論)에 관(關)한 고찰(考察))

  • Park Seung-Mi;Park Hi-Joon;Lee Hyang-Sook;Son Yang-Sun;Lim Sa-Bi-Na;Lee Hye-Jung
    • Korean Journal of Acupuncture
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    • v.18 no.1
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    • pp.81-94
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    • 2001
  • We could summerize the concept of the right and left mentioned in Nai-Gyung and some literature of oriental medicine as follow At first the right and left is a directional right and left which implys left-liver-right-lung(左肝右肺), left-yang-right-eum(左陽右陰), secondly it is also the road of eumyang which implys man-left-woman-right(男左女右), left-blood-right-ki(左血右氣), left-sinsu-right-myungmon(左腎水右命門), and left-right of pulse. left-liver-right-lung(左肝右肺), left-yang-right-eum(左陽右陰) and man-left-woman-right(男左女右) are expressions of the movement of yang which is a core of chang, at the same time, left-blood-right-ki(左血右氣), left-sinsu-right-myungmon(左腎水右命門), and left-right of pulse are expressions of the eum in response to the movement of yang. (go up and down of water and fire) Finally, both a directional right and left and a road of eumyang mean a road of going up and down of eumyang so, this is very important index in circulation and keeping ballance of eumyang (ki-Hyul:氣血) in the human body therefore, we can treat a disease with acupuncture in the use of this charater, for example when a disease occurs in the left side, we can treat it with acupuncture in the right side, the same applys to right.

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Characteristics Analysis of Small AFPM Generator with Variation of Coil Winding Method (권선 방법에 따른 소형 축방향 자속 발전기 특성 해석)

  • Lee, Keon-Su;Lee, Kyu-Seok;Park, Jung-Hyung;Yang, Hee-Jung;Lee, Sung-Ho;Park, Sung-Jun
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.1015-1016
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    • 2011
  • 본 논문에서는 권선 방법에 따라 코일 U, V, W를 같은 층에 원주방향으로 배치한 집중권 권선 모델, 코일 U, V, W를 각각 한 층씩 원주 방향으로 배치한 분포권 권선 #1 모델, 코일에 경사각을 적용하여 코일 U, V, W를 한 층에 배치하는 분포권 #2 모델로 총 3가지 사양의 3상 코어리스 축방향 자속 발전기를 설계하였다. 3차원 유한요소 해석을 활용하여, 무부하 상태에서의 역기전력, 쇄교 자속 밀도와 외부 정류 회로를 구성한 부하 상태에서의 정류 전압, 정류 전류와 같은 전자기 특성에 대한 해석 및 특성 비교를 수행하였다.

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