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Kim Sang Hyun,Kim Hyun Joong,Kim Su Hyun,Jung Hee Ju,Kim Byungchan,Cho Do-Hyun,Jeon Jong-Min,Yoon Jeong-Jun,Kim Sang-Hyoun,Park Jeong-Hoon,Bhatia Shashi Kant,Yang Yung-Hun 한국미생물·생명공학회 2023 Journal of microbiology and biotechnology Vol.33 No.5
Identification of novel, electricity-producing bacteria has garnered remarkable interest because of the various applications of electricigens in microbial fuel cell and bioelectrochemical systems. Shewanella marisflavi BBL25, an electricity-generating microorganism, uses various carbon sources and shows broader sugar utilization than the better-known S. oneidensis MR-1. To determine the sugar-utilizing genes and electricity production and transfer system in S. marisflavi BBL25, we performed an in-depth analysis using whole-genome sequencing. We identified various genes associated with carbon source utilization and the electron transfer system, similar to those of S. oneidensis MR-1. In addition, we identified genes related to hydrogen production systems in S. marisflavi BBL25, which were different from those in S. oneidensis MR-1. When we cultured S. marisflavi BBL25 under anaerobic conditions, the strain produced 427.58 ± 5.85 μl of biohydrogen from pyruvate and 877.43 ± 28.53 μl from xylose. As S. oneidensis MR-1 could not utilize glucose well, we introduced the glk gene from S. marisflavi BBL25 into S. oneidensis MR-1, resulting in a 117.35% increase in growth and a 17.64% increase in glucose consumption. The results of S. marisflavi BBL25 genome sequencing aided in the understanding of sugar utilization, electron transfer systems, and hydrogen production systems in other Shewanella species.
A Performance Evaluation for applying e-navigation on Wibro in Marine Environment
ByungChan Kim,SungHoon Jung,GyuSik Yang 한국멀티미디어학회 2009 한국멀티미디어학회 국제학술대회 Vol.2009 No.-
This paper presents a performance evaluation in order to show the possibility of e-navigation application on Wibro communication system in marine environment. For this purpose, we had experimented Wibro system on the commercial passenger ship, while Wibro base station transmitting signals toward the ship side.
CUBIC PARTITION PAIRS WEIGHTED BY THE PARITY OF THE CRANK
KIM, BYUNGCHAN The Kangwon-Kyungki Mathematical Society 2015 한국수학논문집 Vol.23 No.4
We study congruence properties of the number of cubic partition pairs weighted by the parity of the crank. If we define such number to be c(n), then $c(5n+4){\equiv}0$ (mod 5) and $c(7n+2){\equiv}0$ (mod 7), for all nonnegative integers n.
Kim, Byungchan The Kangwon-Kyungki Mathematical Society 2018 한국수학논문집 Vol.26 No.2
By acting the dihedral group $D_k$ on the set of k-tuple multi-partitions, we introduce k-gonal partitions for all positive integers k. We give generating functions for these new partition functions and investigate their arithmetic properties.
Kim, Byungchan Korean Mathematical Society 2017 대한수학회논문집 Vol.32 No.3
An error in the proof of Theorem 1 of "On partition congruences for overcubic partition pairs" [Commun. Korean Math. Soc. 27 (2012), no. 3, 477-482] is corrected.