• Bulletin of the Korean Chemical Society
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• v.28 no.11
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• pp.2107-2110
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• 2007

• Proceedings of the Korean Fiber Society Conference
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• 1992.06a
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• pp.28-28
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• 1992

• Bulletin of the Korean Chemical Society
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• v.11 no.1
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• pp.28-31
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• 1990

By using Pak's theory of liquid, a phenomenological theory of viscosity proposed by the authors is applied to liquids under high pressures. The calculated viscosities for various simple substances are in good agreements with those of the observed values over wide pressure ranges.

• The Pure and Applied Mathematics
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• v.28 no.1
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• pp.27-42
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• 2021

In this paper, we exploit some known theta function identities involving two parameters ��k,n and ��′k,n for the theta function �� to find about 54 new values of the Ramanujan's cubic continued fraction.

• Bulletin of the Korean Space Science Society
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• 1999.09a
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• pp.28-28
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• 1999

No Abstract, See Full Text

• Nonlinear Functional Analysis and Applications
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• v.28 no.4
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• pp.1115-1125
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• 2023

This paper deals with the controllability of linear and nonlinear generalized fractional dynamical systems in finite dimensional spaces. The results are obtained by using fractional calculus, Mittag-Leffler function and Schauder's fixed point theorem. Observability of linear system is also discussed. Examples are given to illustrate the theory.

• Journal of Life Science
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• v.14 no.6 s.67
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• pp.963-966
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• 2004

The sequence of ITS (partial 16S ribosomal DNA, complete ITS1, 5.8S ribosomal DNA and ITS2, and partial 28S ribosomal DNA) was analysed by PCR and autosequencing in Sarcodon aspratus. The ITS lenght of S. aspratus was 716 base pair. As this sequence compared with other reports on S. aspratus (ace No AF335110), the sequence variation based on nucleotide deletion and substitution was $1.8\%$. This nucleotide variation rate in same species was very higher than in other species. Also, the sequence varitation rates between this S. aspratus and S. imbricatus, and S. squamus were $8\%\;and\;10\%$, respectively. This results suggested that the high sequence variation of S. aspratus might be caused specific host and inhabitat environment which limited gene flow.

• Journal of Physiology & Pathology in Korean Medicine
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• v.17 no.1
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• pp.209-212
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• 2003

A wide variety of cancer chemotherapeutic agents have been shown to induce programmed cell death (PCD, apoptosis) in various tumor cell fines in vitro. This study was performed to know how ginsenoside Rc affect on SK-MEL-28 cell line, and how they induce the apoptosis. SK-MEL-28 cell lines were treated with various concentrations of ginsenoside Rc and cultured for various times. At cell cycle analysis, cells arrested at G2/M phase by ginsenoside Rc and apotosis percentage increased along with increasing concentration and time. TUNEL assay was performed to know whether SK-MEL-28 cell fine die as apoptosis or necrosis by ginsenoside Rc. As a result, fluorescence increased along with increasing time and concentration. Fas expressed on SK-MEL-28 cell lines membrane by ginsenoside Rc was identified using flow cytometer. Ginsenoside Rc induced apoptosis against SK-MEL-28 cell fines, and the apoptosis mechanism was identified as Fas-mediated apotosis.

• Journal of fish pathology
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• v.27 no.1
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• pp.11-16
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• 2014

The resistance against white spot syndrome virus (WSSV) infection in wild marine crab Gaetice depressus by the immunization of a recombinant glutathione-S-transferase (GST) fused VP28 protein (GST-VP28) was evaluated. The cumulative mortalities of GST-VP28 injected groups were lower than those of the control groups at 10 days of post-challenge, and the time to death of 50% crab ($TD_{50}$) was delayed by the immunization using GST-VP28. The group boosted with GST-VP28 after 2 weeks of primary immunization clearly showed longer $TD_{50}$ than non-boosted group against challenge with WSSV. This result suggests that boosting with the antigen protein elicit stronger immune responses similar to adaptive immune responses of vertebrates. However, the short $TD_{50}$ was observed in the group challenged at 3 weeks post boosting comparing to the group challenged at 1 week post boosting. This suggests that the protective strength of immunization decreased by the time.

• Journal of Life Science
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• v.34 no.7
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• pp.453-464
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• 2024

The fermentation of ganjang is known to be greatly influenced by the microbial communities derived from its primary ingredients, meju and sea salt. This study investigated the effects of changes in meju size on the distribution and correlation of microbial communities in ganjang fermentation, to enhance its fermentation process. Ganjang was prepared using whole meju and meju divided into thirds, and samples were collected at 7-day intervals over a period of 28 days for microbial community analysis based on 16S rRNA gene sequencing. At the genus level, during fermentation, ganjang made with whole meju exhibited a dominance of Chromohalobacter (day 7), Pediococcus (day 14), Bacillus (day 21), and Pediococcus (day 28), whereas ganjang made with meju divided into thirds consistently showed a Pediococcus predominance over the 28 days. Beta-diversity analysis of microbial communities in ganjang with different meju sizes revealed significant separation of microbial communities at fermentation days 7 and 14 but not at days 21 and 28 across all experimental groups. The linear discriminant analysis effect size (LEfSe) was determined to identify biomarkers contributing to microbial community differences at days 7 and 14, showing that on day 7, potentially halophilic microbes such as Gammaproteobacteria, Firmicutes, Oceanospirillales, Halomonadaceae, Bacilli, and Chromohalobacter were prominent, whereas on day 14, lactic acid bacteria such as Pediococcus acidilactici, Lactobacillaceae, Pediococcus, Bacilli, Leuconostocaceae, and Weissella were predominant. Furthermore, correlation analysis of microbial communities at the genus and species levels revealed differences in correlation patterns between meju sizes, suggesting that meju size may influence microbial interactions within ganjang.