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Hoang, Cong Thanh,Hong, Yeojin,Truong, Anh Duc,Lee, Janggeun,Lee, Kyungbaek,Hong, Yeong Ho PERGAMON 2017 DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY Vol. No.
<P><B>Abstract</B></P> <P>Interleukin (IL)-17B is a little known member of the IL-17 cytokine family, which plays an important role in immunity by regulating the expression of proinflammatory cytokines. In this study, we determined the coding sequence and biological functions of a novel chicken IL-17B (chIL-17B). The full-length chIL-17B coding sequence includes 567 nucleotides encoding 188 amino acids, which was identified in small intestinal epithelial cells. The chIL-17B protein shares 96.48% amino acid sequence identity with turkey, 92.57% with duck, and 44.92–64.06% with mammalian IL-17B proteins. ChIL-17B shares three exons and two introns with mammals, turkey, and duck. Moreover, IL-17B mRNA was more highly expressed than IL-17A mRNA in several organs of chickens infected with <I>Salmonella</I> and was upregulated in chicken cell lines following LPS stimulation. In addition, in chicken cell lines, chIL-17B induced the mRNA expression of several proinflammatory cytokines, including IL-1β, IL-6, LITAF, and INF-γ, but not IL-17A, and activated MyD88, TAK1, NF-κB1, and SOCS1, which are associated with the NF-κB signaling pathway. Taken together, chicken interleukin-17B plays a critical role in host defense against the bacterial pathogens, and regulates proinflammatory cytokines by activating the NF-κB signaling pathway.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A novel chicken interleukin-17B (chIL-17B) was cloned. </LI> <LI> Chicken IL-17B expression was upregulated in response to bacterial infection. </LI> <LI> Chicken IL-17B functions through the NF-κB signaling pathway. </LI> <LI> ChIL-17B overexpression activates proinflammatory cytokines in HD11, OU2, and CU91 cells. </LI> </UL> </P>
Torrefaction Process for Rice Husk, Coffee Shell, and Wood to Improve Bioenergy Property
Soo-Ho Park,Thanh Cong Hoang,Jongo Kim,Woo-Bum Lee 한국폐기물자원순환학회 2016 한국폐기물자원순환학회지 Vol.33 No.1
The objective of this study was to examine the torrefaction process of three lignocellulose biomasses (rice husks, coffee shell, and wood) produced in Vietnam. Three different torrefaction temperatures ranging from 200oC to 300oC and three residence times of 20, 40, and 60 min were considered. The result showed that temperature had a higher effect on torrefaction process of biomass than residence time. Based on the findings of this study, a residence of 40 min could be suggested for an effective and proper torrefaction process to recycle the agricultural biomass and wood at 300oC. The torrefied products become fuel sources which can be applied to replace with fossil fuels.
The Role of Institution on FDI and Environmental Pollution Nexus
Thanh Cong HA,Hoang Nam NGUYEN 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.6
The research aim is to empirically study the role of institutions in the relationship between foreign direct investment (FDI) and environmental pollution in 86 developing countries during 2008–2018. This study collects key data from the World Development Indicators (WDI). Institution indicators are collected from the Global Governance Indicators (WGI). To carry out the research objectives, the authors conducted quantitative analysis through System Generalized Method of Moments (S-GMM). The research results indicate that FDI positively impacts on environmental pollution. In particular, governmental efficiency, political stability and non-violence, quality regulations, the rule of law and the voice and accountability play an important role in the FDI-environmental pollution nexus in developing countries. The findings of this study suggest that these countries in question need to consider very carefully welcoming FDI inflows. In other words, host governments should build ‘filter funnel’ to attract FDI for long-term development. Moreover, they also have to manage strictly foreign invested enterprises domestically in order to minimize negative impacts on environment quality. For a stable governance environment, each country must strictly follow international environmental agreements, and people and businesses must comply with environmental regulations and raise awareness of environmental protection as the foundation for economic growth and environmental sustainability.
Thanh Nhon HOANG,Cong Bac TRUONG 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.11
This study investigates the relationship between social capital and enterprise performance with knowledge sharing as the mediator. By employing the data of 677 respondents collected from delivering questionnaires to small and medium-size firms in Vietnam in 2020, this study suggests a two-step approach that combines exploration factor analysis (EFA), confirmatory factor analysis (CFA), and path analysis (SEM). The empirical findings significantly support our proposed model by demonstrating that knowledge sharing mediates the connection between all three elements of social capital and enterprise performance. At the same time, the results emphasize the importance of knowledge sharing as a major benefit of social capital and a substantial driving element of both operational and financial performance. The results show that all three social capital qualities (structural, relational, and cognitive) significantly impact both tacit and explicit knowledge sharing, while knowledge is one of the main routes connecting social capital to enterprise performance. Hence, our research model may be used in future studies to evaluate social capital, knowledge sharing, and firm performance as a new theoretical model. Our results offer a plausible explanation for how social capital improves knowledge sharing and enterprise performance.
Torrefaction Process for Rice Husk, Coffee Shell, and Wood to Improve Bioenergy Property
박수호,Thanh Cong Hoang,김종오,이우범 한국폐기물자원순환학회 2016 한국폐기물자원순환학회지 Vol.33 No.1
The objective of this study was to examine the torrefaction process of three lignocellulose biomasses (rice husks, coffeeshell, and wood) produced in Vietnam. Three different torrefaction temperatures ranging from 200oC to 300oC and threeresidence times of 20, 40, and 60 min were considered. The result showed that temperature had a higher effect ontorrefaction process of biomass than residence time. Based on the findings of this study, a residence of 40 min could besuggested for an effective and proper torrefaction process to recycle the agricultural biomass and wood at 300oC. Thetorrefied products become fuel sources which can be applied to replace with fossil fuels.
Van-Hoang Tran,Thanh-Huan Nguyen,Frédéric Plourde,Khanh-Duy Cong Do,Duy-Hung Chung,Cong-Truong Dinh,Gia-Diem Pham 한국유체기계학회 2023 International journal of fluid machinery and syste Vol.16 No.2
In order to increase turbine efficiency while retaining structural integrity, modern jet engines need an effective cooling system. Pin-fin arrays play a significant role in the internal cooling system of the turbine blade. In examining the efficacy of cooling techniques using pin-fins, the other papers focus on pin-fin configurations. In contrast, the current study is a step toward optimizing cooling cascade endwalls for better maneuvering and reservation of vortices, which leads to more considerable heat transfer near the endwalls. This study examines the flow field and heat transfer of roughed endwall in the pin-fin channel, including varieties with flat endwall and extruded endwall. The heat transfer of the channel and pressure drop properties of the extruded endwall case are quantitatively assessed to contrast with those of the flat endwalls scenario for an intake Reynolds number range of 7400 to 36000. The leading and trailing surfaces of the channel are divided into five streamwise regions to understand better how well the pin-fins and endwalls transmit heat. The results show that the new endwall construction significantly increases the high heat transfer zones around the pin-fins compared to the flat endwall scenario. In the meantime, the heat transfer of the channel to the pin-fins is enhanced by the modified endwall configuration. The redesigned endwall outperformed the basic case regarding the HTEI, rising by 15.9%. It is found that the friction factor of the new design is increased due to the narrowing channel. However, due to their much higher heat transfer capacity, the HTEI of extruded endwall is up to 41.5% higher than the HTEI of the channel with flat endwalls. These results demonstrate that the heat transfer properties of pin-fins can be significantly improved by optimizing endwall design.