• Title/Summary/Keyword: Cho O

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Phospholipids from Bombycis corpus and Their Neurotrophic Effects

  • Yeon Jung;Kwon, Hak-Cheol;Cho, Se-Yeon;Cho, Ock-Ryun;Yang, Min-Cheol;Kim, Sun-Yeou;Lee, Kang-Ro
    • Proceedings of the Korean Society of Sericultural Science Conference
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    • 2003.10a
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    • pp.58-65
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    • 2003
  • This study was carried out to investigate active constituents of Bombysis corpus on the neurite outgrowth from PCl2 cells led to isolate three phospholipids (4 6) and three aromatic amines (13) were obtained from the methanol extract of Bombycis corpus. Based on spectral data, their structures have been elucidated as nicotiamide (1), cytidine (2), adenine (3), 1-O-(9Z-octadecenoyl)-2-O-(8Z, 11Z-octadecadienoyl)-sn-glycero-3-phosphorylcholine(4), 1, 2-di-O-hexadecanoyl-sn-glycero-3-phosphorylcholine(5) and 1, 2-di-O-9Z-octadecenoyl-sn-glycero-3-phosphorylcholine(6). (omitted)

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The Optical Property of Plasma-treated ZnO Nanorods (플라즈마 처리한 ZnO 나노막대의 광학적 특성)

  • Cho, Hyun-Min;Yu, Se-Gi;Cho, Jae-Won
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.22 no.3
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    • pp.230-234
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    • 2009
  • Hydrogen and Oxygen plasma treatments have been done on sonochemical grow ZnO nanorods by varying treatment temperature and time, The changes(position and intensity) in ultraviolet(UV) peaks and green peaks of photoluminescence(PL) spectroscopy have been measured, Experimental results showed; i) in the case of hydrogen plasma treatment, the blue shift of UV peak and the increase of PL intensity of the UV peak were observed as the increase of the process time and temperature, ii) in the case of oxygen plasma treatment, the red shift of green peak was observed and the ratio of $I_{Green}/I_{UV}$ was also increased, as the increase of the process time and the temperature.

A LARGE-UPDATE INTERIOR POINT ALGORITHM FOR $P_*(\kappa)$ LCP BASED ON A NEW KERNEL FUNCTION

  • Cho, You-Young;Cho, Gyeong-Mi
    • East Asian mathematical journal
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    • v.26 no.1
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    • pp.9-23
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    • 2010
  • In this paper we generalize large-update primal-dual interior point methods for linear optimization problems in [2] to the $P_*(\kappa)$ linear complementarity problems based on a new kernel function which includes the kernel function in [2] as a special case. The kernel function is neither self-regular nor eligible. Furthermore, we improve the complexity result in [2] from $O(\sqrt[]{n}(\log\;n)^2\;\log\;\frac{n{\mu}o}{\epsilon})$ to $O\sqrt[]{n}(\log\;n)\log(\log\;n)\log\;\frac{m{\mu}o}{\epsilon}$.

Leiomyoma of the Uterine Cervix in Two Dogs (개에서 발생한 자궁경부 평활근종)

  • Cho, Ho-Seong;Cho, Kyoung-Oh;Park, Nam-Yong
    • Korean Journal of Veterinary Pathology
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    • v.5 no.2
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    • pp.71-74
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    • 2001
  • Masses of the uterine cervix were detected from two dogs, being a 2-year-old female Yorkshire tarrier and a 12-year-old female Basset Hound. Grossly, the masses measuring 3.O$\times$3.O$\times$4.0 cm and 12.O$\times$l2.O$\times$10.07m were prominent, sharply circumscribed, fleshy tumors in the uterine cervix. Histologically, the masses consisted of smooth muscle cells interwoven in bundles, some of which were cut longitudinally (elongated nuclei) and others transversely. Tumor cell nuclei were ordinarily cigar shaped and had rounded blunt ends in the longitudinal plane. There were low mitotic figures without abnormal ones. From these results, these cases were diagnosed as leiomyoma of the uterine cervix. To our Knowledge, no similar tumors have been reported in the uterine cervix.

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A study on Harmful Bacillus Detection used discharge in water (수중 방전을 이용한 유해 세균 검출 분석 연구)

  • Cho, Kook-Hee;Kim, Young-Bae;Cho, Moon-Soo;Park, Bo-Hyun;Shin, Kwang-Chul;Lee, Dong-Hoon
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2004.05a
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    • pp.285-289
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    • 2004
  • In this research, we used discharge tube without dielectric bead or with dielectric beads$(SiO_2,\;Al_2O_3,\;or\;ZrO_2)$ for removal of Escherichia coli. At the result of experiments, the removal characteristics of Escherichia coli appeared relation ratio to input voltage. Because, the electric field of discharge tube is increased when input voltage is increased. And, discharge tube used dielectric $bead(ZrO_2)$, the removal characteristics of Escherichia coli was better than cases of else.

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A Study on the Low-Temperature Plasma$(O_2)$ Etching of Poly (ethylene terephthalate) Fabrics (I) -Effects of Weight Loss and Bathochromicity- (PET 직물에 대한 저온 plasma$(O_2)$ Ethching에 관한 연구(I))

  • Cho, Hwan;Jeong, Hee-Cheon;Cho, In-Sul;Huh, Man-Woo;Chang, Du-Sang
    • Textile Coloration and Finishing
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    • v.2 no.3
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    • pp.8-13
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    • 1990
  • In order to study the modification of wettability, tactility, and bathochromicity of the poly (ethylene Terephthalate) (PET) fabrics, low-temperature plasma$(O_2)$ has been irradiated on the PET fabrics in various conditions. The results obtained from this study were as follows; 1) The weight loss rate of plasma-treated PET fabrics is proportional to irradiation time and internal gas temperature of treating chamber. Also, the effect of weight loss is remarkable at gas pressure ranging from 3 torr to 5 torr. 2) The bathochromic effect of PET fabrics treated with low-temperature plasma$(O_2)$ was improved.

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