• Title/Summary/Keyword: Young Hur

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Monitoring of Residual Sulfur Dioxide in Herbal Medicines

  • Kim, Mi-Kyeong;Hur, Moon-Hye;Jin, Jong-Seong;Shin, Myoung-Hee;Jin, Sun-Kyung;Doh, Hea-Jeong;Sin, Yeong-Min;Kim, Jae-I;Lee, Chang-Hee;Leem, Dong-Gil;Lee, Young-Ja;Choi, Soo-Young
    • Proceedings of the Korean Society of Food Hygiene and Safety Conference
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    • 2004.05a
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    • pp.229-229
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    • 2004

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Vitrification of mouse embryos using the thin plastic strip method

  • Ryu, Eun Kyung;Hur, Yong Soo;Ann, Ji Young;Maeng, Ja Young;Park, Miji;Park, Jeong Hyun;Yoon, Jung;Yoon, San Hyun;Hur, Chang Young;Lee, Won Don;Lim, Jin Ho
    • Clinical and Experimental Reproductive Medicine
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    • v.39 no.4
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    • pp.153-160
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    • 2012

  • Objective: The aim of this study was to compare vitrification optimization of mouse embryos using electron microscopy (EM) grid, cryotop, and thin plastic strip (TPS) containers by evaluating developmental competence and apoptosis rates. Methods: Mouse embryos were obtained from superovulated mice. Mouse cleavage-stage, expanded, hatching-stage, and hatched-stage embryos were cryopreserved in EM grid, cryotop, and TPS containers by vitrification in 15% ethylene glycol, 15% dimethylsulfoxide, 10 ${\mu}g/mL$ Ficoll, and 0.65 M sucrose, and 20% serum substitute supplement (SSS) with basal medium, respectively. For the three groups in which the embryos were thawed in the EM grid, cryotop, and TPS containers, the thawing solution consisted of 0.25 M sucrose, 0.125 M sucrose, and 20% SSS with basal medium, respectively. Rates of survival, re-expansion, reaching the hatched stage, and apoptosis after thawing were compared among the three groups. Results: Developmental competence after thawing of vitrified expanded and hatching-stage blastocysts using cryotop and TPS methods were significantly higher than survival using the EM grid (p<0.05). Also, apoptosis positive nuclei rates after thawing of vitrified expanded blastocysts using cryotop and TPS were significantly lower than when using the EM grid (p<0.05). Conclusion: The TPS vitrification method has the advantages of achieving a high developmental ability and effective preservation.

  • https://doi.org/10.5653/cerm.2012.39.4.153 인용 PDF KSCI

A Photometric Study of the Young Open Cluster IC 1805

  • Sung, Hwankyung;Lim, Beomdu;Bessell, M.S.;Hur, Hyeonoh;Yi, Jonghyuk;Chun, Moo-Young
    • The Bulletin of The Korean Astronomical Society
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    • v.40 no.2
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    • pp.41.2-41.2
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    • 2015

  • We have performed deep wide-field CCD photometry of the young open cluster IC 1805 in the famous star forming region W4, and obtained photometric data for more than 91,000 stars in the field of IC 1805 based on observations with the 3.6m CFHT and the AZT-22 1.5m telescope at Maidanak Astronomical Observatory in Uzbekistan. The photometric data cover an area $43^{\prime}{\times}45^{\prime}$ which is far larger and far deeper than any other optical observations made for the cluster. In order to select the young stellar objects with mid-IR excess emission, we have performed mid-IR photometry of the cluster using the archival images obtained with the Spitzer Space Telescope IRAC and MIPS instruments. From a preliminary analysis of the data, we determined the reddening law ($R_V=3.02{\pm}0.05$), distance modulus ($V_0-M_V=11.9{\pm}0.2$), and the spatial distribution of members.

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