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Tien Manh Huynh,Quang Dinh Le,Mai Ngoc Luu,Tram Thi Huyen Nguyen,Quy Nhuan Bui,Anh Phan Tuong Mai,Thang Hiep Duc Tran,Hien Minh Tran,Cong Hong Minh Vo,Duc Trong Quach 소화기인터벤션의학회 2022 Gastrointestinal Intervention Vol.11 No.3
Jejunal Dieulafoy lesion (DL) is an exceedingly rare, life-threatening cause of gastrointestinal bleeding. Due to its rarity, intermittent bleeding symptoms that often necessitate prompt clinical intervention, variability in detection and treatment methods, and the risk of rebleeding, this condition frequently presents a diagnostic and therapeutic conundrum. We report a case of severe, intermittent, recurrent hematochezia due to a jejunal DL that was difficult to localize. In this case, the metallic coils used as a radiopaque marker allowed surgeons to accurately identify the bleeding site during intraoperative enteroscopy and successfully manage the lesion with minimally invasive laparoscopic surgery.
Tien Manh Huynh,Quang Dinh Le,Mai Ngoc Luu,Tram Thi Huyen Nguyen,Quy Nhuan Bui,Anh Phan Tuong Mai,Thang Hiep Duc Tran,Hien Minh Tran,Cong Hong Minh Vo,Duc Trong Quach 소화기인터벤션의학회 2022 International journal of gastrointestinal interven Vol.11 No.3
Jejunal Dieulafoy lesion (DL) is an exceedingly rare, life-threatening cause of gastrointestinal bleeding. Due to its rarity, intermittent bleeding symptoms that often necessitate prompt clinical intervention, variability in detection and treatment methods, and the risk of rebleeding, this condition frequently presents a diagnostic and therapeutic conundrum. We report a case of severe, intermittent, recurrent hematochezia due to a jejunal DL that was difficult to localize. In this case, the metallic coils used as a radiopaque marker allowed surgeons to accurately identify the bleeding site during intraoperative enteroscopy and successfully manage the lesion with minimally invasive laparoscopic surgery.
Luan, Van Hoang,Tien, Huynh Ngoc,Hur, Seung Hyun Elsevier 2015 JOURNAL OF COLLOID AND INTERFACE SCIENCE - Vol.437 No.-
<P><B>Abstract</B></P> <P>Hybrid 3-dimensional (3D) structures composed of zinc oxide (ZnO) nanorods and reduced graphene oxide hydrogel (rGOH) were fabricated by chemical reaction between Zn ions and GO followed by <I>in-situ</I> lateral growth of ZnO nanorods using Zn ions as seed points. The 3D networked ZnO nanorod–rGOH (ZNR–rGOH) fabricated in this study exhibited excellent methylene blue (MB) removal efficiency due to efficient physical adsorption of dye molecules because of electrostatic attractive forces and enhanced photocatalytic activity by the laterally grown ZnO nanorods. The Langmuir–Hinshelwood rate constant of ZNR–rGOH was 4-fold higher than that of pristine rGO due to the enhanced photocatalytic effects obtained by incorporating laterally grown ZnO nanorods inside the rGOH network.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The Covalently-bonded 3D networked graphene hydrogel was fabricated using Zn ions. </LI> <LI> ZnO nanorods were laterally grown inside rGOH networks using hydrothermal synthesis. </LI> <LI> Dye removal efficiency was highly enhanced by using hybrid structures. </LI> <LI> Visible light photocatalytic activity was also observed in the hybrid structures. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Minh Sang VO,Ngoc Phu TRAN,Thi Kieu Thu NGUYEN,Thi Cam Tien HUYNH,Thi Kim Loi NGUYEN,Le Phuong Nghi THACH,Gia Nhu THAI,Thi Thanh Sang TRAN 한국유통과학회 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.4
This study intends to analyze the impact of the country of origin on the intention to ingest COVID-19 vaccinations by measuring Vietnamese people’s perceptions of India in the manufacture of COVID-19 vaccines. The research is done using a quantitative method, and primary data was obtained using a conventional manner based on the willingness of the research respondents, who are Vietnamese persons aged 18 and up, to contribute information. The findings revealed that perceived brand association and perceived brand quality directly positively impact the COVID-19 vaccine’s consumption intention and willingness. Meanwhile, while the perceived country image component has no direct effect on consumption intention, it does have a positive indirect effect on consumption intention through perceived brand linkage and perceived brand quality. The findings also emphasize the importance and significance of a country’s image in brand association and quality perception. The study’s findings imply that to increase consumers’ willingness to buy India’s COVID-19 vaccination, the country should develop communication initiatives to improve consumer perceptions of the country’s image, the perceived value of the brand association, and brand quality.
Consumer Perceptions and Consumer Behavior Toward Bio-Based Products: An Empirical Study in Vietnam
Trong Luan NGUYEN,Ngoc Phu TRAN,Thi Kieu Thu NGUYEN,Thi Cam Tien HUYNH,Thi Kim Loi NGUYEN,Le Phuong Nghi THACH,Gia Nhu THAI,Thi Thanh Sang TRAN 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.12
Green economy, also known as sustainable economy, is a current development trend in which consumers prefer products that are wholly or partly derived from materials of biological origin since they have become more concerned about their health and the environment in which they live. This study aims to examine consumer behavior toward bio-based products with three key goals in mind. First, it helps to understand the perception of consumers toward Bio-based products. Second, it properly helps consumers be aware of products derived from materials of biological origin so that the consumer can make purchasing decisions to protect their health and contribute to the protection of the environment. Third, the study on consumer behavior towards bio-based products will provide a more accurate view and assessment to companies looking to develop Bio-based products. Based on that, the research is carried out through surveying, collecting data from consumers, and then using the deductive approach, descriptive statistics, and quantitative method analysis. The results demonstrated that a positive relationship and a direct impact are established between the variables of Attitude and Social Norms and the Purchase Intention toward Bio-based products. Furthermore, the findings reveal that customers have positive feelings towards bio-based products in terms of trust, knowledge, and the environment.
Fabrication of Novel 2D NiO Nanosheet Branched on 1D-ZnO Nanorod Arrays for Gas Sensor Application
Hoa, Le Thuy,Tien, Huynh Ngoc,Hur, Seung Hyun Hindawi Limited 2014 Journal of nanomaterials Vol.2014 No.-
<P>Fabrication of 3D structures composed of 1D n-type ZnO nanorods (NRs) and 2D p-type NiO nanosheets (NSs) by a low-cost, low-temperature, and large-area scalable hydrothermal process and its use in highly sensitive NO2gas sensors were studied. The p-n heterojunctions formed by NiO-ZnO interfaces as well as large area two-dimensional NiO NSs themselves increased the adsorption of NO2. Moreover, the charge transfer between NiO and ZnO enhanced the responsivity and sensitivity of NO2sensing even at a concentration of 1 ppm. The 30-min NiO NS growth on ZnO NRs in the hybrid sensor showed the highest sensitivity due to the formation of optimum p-n heterojunctions between ZnO NRs and NiO NSs for gas adsorption and carrier transport. Low responsivity toward reducing gases was also observed.</P>
전치훈,홍성태,정용하,서정진,Huynh Ngoc Tien,염영진,허승현,이광진 한국정밀공학회 2014 International Journal of Precision Engineering and Vol. No.
Graphene/aluminum metal matrix composites (MMC) with enhanced thermal conductivity are fabricated by friction stir processing(FSP). In fabrication of the MMC, graphene reinforcement is applied in the form of a graphene oxide (GO)/water colloid for saferand simpler processing. The result of Raman spectroscopy suggests that graphene reinforcements are successfully mixed into thealuminum matrix by FSP. The thermal conductivity of the graphene/ aluminum MMC is measured to increase by more than 15% incomparison with that of the aluminum matrix. FSP and graphene reinforcement both improve the ductility of the fabricated MMC.
Ho, Nhu Thuy,Van Tam, Tran,Tien, Huynh Ngoc,Jang, Se-Jeong,Nguyen, Tri Khoa,Choi, Won Mook,Cho, Shinuk,Kim, Yong Soo American Scientific Publishers 2017 Journal of Nanoscience and Nanotechnology Vol.17 No.8
<P>The solution-processed intermediate layer (IML), which physically and electrically connects two subcells, is critical in the fabrication of efficient organic tandem solar cells. Several studies have examined solution-processed electron transport materials that can be used as n-type layers in the IML. On the other hand, forming an Ohmic contact for holes is limited by the choice of an aqueous-based hole transport layer (HTL) material except for PEDOT:PSS or vacuum evaporating materials. Here, this paper reports highly transparent and solution-processable nitrogen-doped graphene quantum dots (N-GQDs) as an efficient HTL in the IML. Using an IML based on N-GQDs/PEI, the present P3HT:PCBM tandem device showed a slight improvement in the fill factor (10%) and efficiency (15%) compared to the devices using the PEDOT: PSS/PEI-based junction. The optimal tandem cells with N-GQDs showed a double open-circuit voltage of 1.16 V, short-circuit current density of 5.80 mA/cm(2), fill factor of 0.55, and power conversion efficiency of 3.69% under AM 1.5G solar irradiation. This result thus makes a start on the use of functional graphene quantum dots in organic tandem solar cells.</P>