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- 저자 : Pham Dieu Thuy (검색결과 3 건)
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Pham Ha,Tran Thi Dieu Thuy,Yang Youri,Ahn Jae-Hyung,Hur Hor-Gil,김용학 한국미생물학회 2022 The journal of microbiology Vol.60 No.8
Hydrogen peroxide (H2O2) is produced by alpha-hemolytic streptococci in aerobic conditions. However, the suitable method for detection of H2O2-producing streptococci in oral microbiota has not been setup. Here we show that o-dianisidine dye and horseradish peroxidase were useful in tryptic soy agar medium to detect and isolate H2O2-producing bacteria with the detection limit of one target colony in > 106 colony-forming units. As a proof, we isolated the strain HP01 (KCTC 21190) from a saliva sample using the medium and analyzed its characteristics. Further tests showed that the strain HP01 belongs to Streptococcus oralis in the Mitis group and characteristically forms short-chain streptococcal cells with a high capacity of acid tolerance and biofilm formation. The genome analysis revealed divergence of the strain HP01 from the type strains of S. oralis. They showed distinctive phylogenetic distances in their ROS-scavenging proteins, including superoxide dismutase SodA, thioredoxin TrxA, thioredoxin reductase TrxB, thioredoxin-like protein YtpP, and glutaredoxin- like protein NrdH, as well as a large number of antimicrobial resistance genes and horizontally transferred genes. The concatenated ROS-scavenging protein sequence can be used to identify and evaluate Streptococcus species and subspecies based on phylogenetic analysis.
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THE IMPACT OF GOVERNMENT OWNERSHIP ON DIVIDEND POLICY : CASE IN VIETNAM AND TAIWAN
Hang Thi Thuy Pham,Sung-Chang Jung,Hang Thi Dieu Nguyen 한국재무학회 2018 한국재무학회 학술대회 Vol.2018 No.05
In this paper, we examine the impact of government ownership on dividend policy in case of Viet Nam and Taiwan. We find a strong evidence that government ownership has a positive impact on dividend payout in both countries. Additionally, firms with government ownership tend to pay higher dividend than firms without government ownership. Our findings suggest that the impacts of government ownership on dividend policy in both countries can be explained by the substitute hypothesis of agency theory (La Porta, 2000). We also discover that firms with government ownership in both countries pay higher dividend than the firms without government ownership.
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Nguyen Thu Uyen,Dao Van Cuong,Pham Dieu Thuy,Luu Hong Son,Nguyen Thi Ngan,Nguyen Hung Quang,Nguyen Duc Tuan,In-ho Hwang 한국축산식품학회 2023 한국축산식품학회지 Vol.43 No.4
Myogenesis and adipogenesis are the important processes determining the muscle growth and fat accumulation livestock, which ultimately affecting their meat quality. Hanwoo is a popular breed and its meat has been exported to other countries. The objective of this study was to compare the myogenesis and adipogenesis properties in satellite cells, and meat quality between Hanwoo and Vietnamese yellow cattle (VYC). Same 28-months old Hanwoo (body weight: 728±45 kg) and VYC (body weight: 285±36 kg) steers (n=10 per breed) were used. Immediately after slaughter, tissue samples were collected from longissimus lumborum (LL) muscles for satellite cells isolation and assays. After 24 h post-mortem, LL muscles from left carcass sides were collected for meat quality analysis. Under the same in vitro culture condition, the proliferation rate was higher in Hanwoo compared to VYC (p<0.05). Fusion index was almost 3 times greater in Hanwoo (42.17%), compared with VYC (14.93%; p<0.05). The expressions of myogenesis (myogenic factor 5, myogenic differentiation 1, myogenin, and myogenic factor 6)- and adipogenesis (peroxisome proliferator-activated receptor gamma)-regulating genes, and triglyceride content were higher in Hanwoo, compared with VYC (p<0.05). Hanwoo beef had a higher intramuscular fat and total monounsaturated fatty acids contents than VYC beef (p<0.05). Whilst, VYC meat had a higher CIE a* and total polyunsaturated fatty acids content (p<0.05). Overall, there was a significant difference in the in vitro culture characteristics and genes expression of satellite cells, and meat quality between the Hanwoo and VYC.
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