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The Multidimensional Masculinity in Nguyễn Huy Thiệp’s Short Stories
( Van Thuan Nguyen ),( Anh Dan Nguyen ),( Van Luan Nguyen ) 부산외국어대학교 아세안연구원 2024 Suvannabhumi Vol.16 No.1
Nguyễn Huy Thiệp is a pillar in Vietnamese cultural life after the Second Indochina War, and the fates of men and women at the beginning of Đổi mới (Renovation) is one of the prominent themes in his short stories. To show off sexual power, seek glory, and maintain his dominant position, Thiệp’s heroes engage in a game of oppressing the weak, hunting animals, and harassing women. However, due to the complex changes in social life, moral values, and gender inequality, men in the postwar period quickly experienced the feeling of humiliation, impotence, and failure. In turn, the sophisticated aspects of masculinity demonstrate the cultural and ethical concerns of contemporary Vietnamese society. By exploring the multidimensional nature of masculinity expressed in Thiệp’s stories, this study aims to resolve misconceptions about gender and the relationship between men and women in his work.
Luan, Van Hoang,Bae, Daeryeong,Han, Jong Hun,Lee, Wonoh Elsevier 2018 Composites Part B, Engineering Vol.134 No.-
<P><B>Abstract</B></P> <P>To facilitate the immobilization of the silver nanoparticles with high crystallinity and stability, the mussel-inspired dopamine is functionalized on the surface of the graphene. Considering the unique adhesive property of a catechol group in the dopamine toward metallic ions, a large amount of silver nanoparticles can be coated on the surface of the dopamine-functionalized graphene. To use the high surface area of graphene, large-sized graphene sheets are prepared using the microwave heat treatment of graphite powder followed by chemical oxidation and exfoliation. In addition, the large-area graphene sheets are selectively collected by a pH-assisted fractionation technique and are confirmed by the green-light filtered optical microscopic images. The dopamine-mediated graphene hybrid with silver nanoparticles shows superior electrochemical activity with enhanced electrical conductivity by promoting the decoration of stable silver nanoparticles on the surface of graphene. The resulting hybrid exhibits 7.6 times and 1.6 times higher electrochemical capacitance than that of the bare and graphene/silver hybrid-modified glassy carbon electrodes, respectively.</P>
Mechanisms of Methylene Blue Degradation by Nano-Sized β-MnO2 Particles
Van Luan Pham,김도군,고석오 대한토목학회 2020 KSCE JOURNAL OF CIVIL ENGINEERING Vol.24 No.5
Degradation of a dye by 1-D nano-sized β-MnO2 particles was investigated to understand the mechanisms involved. Batch experiments were performed in a system of β-MnO2, hydrogen peroxide (H2O2), methylene blue (MB), and radical scavengers. The prepared β-MnO2 had a 1-dimensional nano-sized structure and showed a negative zeta potential at pH higher than 3.7. In the presence of H2O2, MB was rapidly degraded by β-MnO2. The rate of MB degradation was not significantly inhibited by the initial pH values from 6.05 to 10.02, but notably decreased at pH 3.04, at which point the β-MnO2 particles dissolved. The effect mechanisms of operational parameters (i.e., H2O2, catalyst dose) in β-MnO2/MB/H2O2 system were investigated. The removal rate of MB was remarkably reduced in the existence of p-quinone and was even more affected when sodium azide was added, indicating that the singlet oxygen radical (1O2) plays an important role. The obtained results point out that MB degradation by nano-sized β-MnO2 is due to the catalytic oxidation of H2O2 on β-MnO2surface reactive sites, rather than surface oxidation or adsorption. The reusability of nano-sized β-MnO2 was also examined after five times of recycling to evaluate the applicability of β-MnO2 for wastewater treatment.
( Luan Pham Van ),( Tien Nguyen Dinh ),( Ha Le Ngoc ),( Son Mai Hong ),( Bieu Bui Quang ),( Tuan Nguyen Van ) 대한결핵 및 호흡기학회 2021 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.129 No.-
Objective Stereotactic Body Radiation Therapy (SBRT) was indicated for early-stage non-small cell lung cancer (NSCLC) patients inoperable. The purpose of the study was evaluated the result of SBRT in stage I NSCLC patients (T1-2aN0M0) with peripheral tumors. Methods Prospective, follow-up 23 patients with stage T1-2aN0M0 NSCLC with peripheral tumor, who were received SBRT, followup and evaluated from January, 2015 to January, 2020. The primary endpoints were Objective Response Rate (ORR), Disease Control Rate (DCR), Progression Free Survival (PFS), the second endpoints were Overall Survival (OS) and Toxicity. Results The average age was 65.13 years-old, the mean of diameter was 3.31cm, the mean of SUVmax value was 7.77. The stage of the tumor is mostly T2a (60,9%). The median of follow-up was 26 months, ORR was 91.3%, DCR was 95.7%. The median PFS was 26 months, median OS was 58 months, the ratio of OS in 1 year, 2 years, 3 years, 4 years, 5 years were 95.7%, 65.2%, 39.1%, 26.1% and 17.4%, respectively. The common of adverse events was pneumonitis due to SBRT at 9 patients, but mainly was grade 1, no patients have pneumonitis grade 4 and 5. No clinically significant changes in pulmonary function following SBRT for earlystage NSCLC. Conclusion SBRT was a good option for patients with stage I NSCLC, there was no significant difference in survival between patients who refused surgery and those who have medical inoperable and this is a safe treatment for patients.
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>
Luan, Van Hoang,Han, Jong Hun,Kang, Hyun Wook,Lee, Wonoh Elsevier Science Ltd 2019 Composites Part B, Engineering Vol.178 No.-
<P><B>Abstract</B></P> <P>Three-dimensionally porous carbon nanostructures have been widely used in energy storage applications owing to their large specific surface areas and excellent electrical properties. In addition, copper oxide has been considered as an effective pseudocapacitive material to significantly increase the energy density. In this paper, we introduce the synergetic combination of one-dimensional copper oxide nanowires and two-dimensional graphene sheets to fabricate a highly porous and electrically conductive three-dimensional hybrid nanostructure for high-performance supercapacitor electrodes with increased capacitances. The copper oxide nanowires were synthesized by reduction of copper nitrate and sequential oxidation at a high temperature. The copper oxide nanowire/graphene hybrid three-dimensional nanostructure was obtained by a self-assembly technique through a simple hydrothermal treatment. The hybrid nanostructure had an acceptable surface area and increased thermal stability. The porous hybrid nanostructure utilized as a supercapacitor electrode provided 1.6 times higher electrochemical capacitance than that of a graphene-only nanostructure-based electrode as well as superior capacitance stability with a retention of 91.2% retention after 5,000 charge−discharge cycles. Owing to the increased capacitance, the manufactured electrode exhibited high a specific energy density of 50.6 Wh kg<SUP>−1</SUP> at a power density of 200 W kg<SUP>−1</SUP>, which demonstrates its potential for use in electrochemical energy storage devices.</P>
Luan, Van Hoang,Son, Hye Jeong,Chung, Jin Suk,Hur, Seung Hyun American Scientific Publishers 2017 Journal of nanoscience and nanotechnology Vol.17 No.10
<P>Herein, a three-dimensional (3D) reduced graphene oxide hydrogel (rGOH) was fabricated by crosslinking ethylene diamine (EDA) and the functional groups of GO in the presence of one-dimensional (1D) Ag nanowires (NWs). The Ag NWs increased the electrical conductivity and the pore size of the final 3D structures. The capacitance of Ag-rGOH (369 F g(-1)) was 1.7 times higher than that of EDA-rGOH (218 F g(-1)) and 1.3 times higher than that of a physically mixed sample with the same Ag content. Moreover, the Ag-rGOH electrode also exhibits excellent long-term stability with a capacitance retention of more than 90% over 1,000 cycles and a high energy of 2.2 Wh kg(-1) at 900 W kg(-1).</P>
Thanh Van PHAM,Van Luan NGUYEN,Thi Lai NGUYEN,Thi Thu PHAN 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.9
This research was conducted to check the impact of factors related to the small and medium-sized enterprises (SME) on the economic growth in the Southeast region of Vietnam, over the years from 1996–2019. This paper applies a combination of FEM, DKSE, GMM, and RIDGE-FEM regression methods to estimate the influence of independent variables on the economic growth of the whole Southeast region with the panel data collected from GSO; and applying the OLS regression model for each province. The study finds that all variables have a statistically significant positive impact on the economic growth of the study area. Accordingly, the importance of the variables is in the following order: (1) the proportion of workers by professional and technical qualification (SMEH), (2) the number of vocational training schools (LnTSCH), and educational level of workers (LnSchool), (3) the number of SME enterprises (LnSME); (4) The average number of years in the schooling of employees in the enterprise (LnSchool); (5) Enterprise capital (LnCAP); and (6) the average number of employees of SME (LnSMER). The research results also show that factors related to the quality of labor resources have a more positive influence on growth than both the labor size and financial capital of SMEs.