• Title/Summary/Keyword: Jang-sam

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Quantitative Analyses of the Functional Constituents in SanYangSam and SanYangSanSam

  • Shin, Il-Soo;Jo, Eunbi;Jang, Ik-Soon;Yoo, Hwa-Seung
    • Journal of Pharmacopuncture
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    • v.20 no.4
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    • pp.274-279
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    • 2017
  • Objective: SanYangSam and SanYangSanSam are traditional Korea-medical herbs that are grown from Panax ginseng C.A. Meyer. In our previous studies, we found that the functional compounds in SanYangSam and SanYangSanSam were different and depended on the type and the cultivation environment of ginseng. This study aimed to profile the functional constituents in SanYangSam and SanYangSanSam. Methods: To profile the functional aspects of the many compounds that have therapeutic activities in SanYangSam and SanYangSanSam extracts, we used liquid chromatography tandem mass spectrometry and quadrupole orthogonal acceleration time-of-flight mass spectrometry. Results: A total of four major compounds were detected; two of which were the natural flavonoids kaempferol and quercetin. Among others, two polyacetylene compounds, including panaxydol and panaxynol, were detected. Conclusion: In this study, we found that panaxydol, one of the polyacetylene constituents of ginseng, is a candidate anti-cancer agent in SanYangSam and SanYangSanSam pharmacopuncture. In addition, we found that the panaxydol levels in the SanYangSanSam extract were over 30 times those in the SanYangSam extract.

Random Walk Simulation for the Growth of Monolayer in Dip Pen Nanolithography

  • Kim, Hyojeong;Ha, Soojung;Jang, Joonkyung
    • Bulletin of the Korean Chemical Society
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    • v.34 no.1
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    • pp.164-166
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    • 2013
  • Using a simple random walk model, this study simulated the growth of a self-assembled monolayer (SAM) pattern generated by dip-pen nanolithography (DPN). In this model, the SAM pattern grew mainly via the serial pushing of molecules deposited from the tip. This study examined various SAM patterns, such as lines, crosses and letters, by changing the tip scan speed.

Nanoscale Islands of the Self Assembled Monolayer of Alkanethiol

  • Saha, Joyanta K.;Yang, Mino;Jang, Joonkyung
    • Bulletin of the Korean Chemical Society
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    • v.34 no.12
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    • pp.3790-3794
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    • 2013
  • Molecular dynamics simulations were performed to study the structure and stability of a nanoscale self-assembled monolayer (SAM) of alkanethiol on a gold (111) surface. The tilt angle and orientational order of the alkyl chains in the SAM island were examined by systematically varying the size of the island. The chain length dependence of the SAM island was examined by considering alkanethiols containing 12, 16, 20, and 24 carbon atoms. The minimum diameter of SAM islands made from 1-tetracosanethiol, 1-ecosanethiol, 1-hexadecanethiol and 1-dodecanethiol were 2.29, 1.9, 4.7 and 4.76 nm, respectively. These set the ultimate resolution that can be patterned by soft nanolithography. As the length of alkanethiol increases, the SAM islands became more ordered in both orientation and conformation of the alkyl chains.

A study on the function of Gae-Hap-Chu (開闔樞) (개합추(開闔樞) 기능에 관한 연구(硏究))

  • Cho, Yong-Ju;Kim, Jin-Ju
    • Korean Journal of Acupuncture
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    • v.25 no.1
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    • pp.19-37
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    • 2008
  • The aim of this study was to understand the function & the character of meridians through the theory of Gae-Hap-Chu (開闔樞). Methods : First, We researched the meaning of Gae-Hap-Chu from Internal Classic (內經). Then, We investigated the theory of Gae-Hap-Chu (開闔樞) comparing with the principle of Oriental studies. The last, we considered the function & the character of Gae-Hap-Chu (開闔樞). Results & Conclusions : Gae-Hap-Chu represents distributing-gathering-controlling of meridians and suggests the place of meridians acting. Gae-Hap-Chu is true to the principle of Sam-Jae (三才原理) and interrelationship of Jang-Bu organ (臟腑相關) is also true to the study of Sang-Su (象數學). Descending & ascending meridians make a interrelationship of Jang-Bu organ individually. The function of gathering & distributing is expanded on Yang meridians. Heart & Gallbladder Meridians control Hap (闔) and Kidney& Triple Energizer meridians control Gae (開).

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