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Minh Sang VO(Minh Sang VO ),Minh Quoc PHAM(Minh Quoc PHAM ),Thuy Bao Thu LE(Thuy Bao Thu LE ),Le Kim Ngan NGUYEN(Le Kim Ngan NGUYEN ),Xuan Tung DAO(Xuan Tung DAO ),Huynh To Nhi PHAM(Huynh To Nhi PHAM 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.2
The study aims to evaluate the impact of corporate social responsibility on customers’ repurchase intention in Vietnam’s fast-moving consumer goods (FMCG) industry. This study employs primary data surveyed from 417 Vietnamese consumers, and the sample is selected based on the willingness to participate in providing information. The results show corporate social responsibility’s positive impact on repurchase intention in the FMCG industry in the Vietnam market. There are three components of corporate social responsibility, including ethical responsibility, legal responsibility, and economic responsibility have a positive impact on repurchase intention. The economic responsibility component has the greatest effect on repurchase intention. There is not enough statistical basis for the philanthropic responsibility component of corporate social responsibility to recognize its impact on repurchase intention. The findings of this study suggest that companies dealing in the FMCG industry in Vietnam need to invest more in further developing their corporate social responsibility, it not only helps to improve their customer loyalty to businesses but also contributes to promoting the country’s economic and social development in a better and more sustainable direction.
Le, Minh-Tung,Sohn, Yong-Un,Lim, Jae-Won,Choi, Good-Sun The Japan Institute of Metals 2010 Materials Transactions Vol.51 No.1
<P>Cu thin films were deposited on Si(100) substrates using direct current (DC) magnetron sputtering. We focused on the effect of sputtering DC power on the electrical, structural properties, and the nucleation and growth of Cu films during the initial stage of sputtering. The Cu films deposited at higher sputtering power showed strong crystallinity, low electrical resistivity in comparison with the Cu films deposited at lower sputtering power. Concerning the nucleation and growth of Cu films during initial stage of magnetron sputtering, it was found that the progress of the nucleation and growth of the Cu films at higher sputtering is much faster than those of the Cu films at lower sputtering power even though they have a similar nucleation and growth mechanism, and their relation to resultant microstructure was confirmed by atomic force microscopy.</P>
Minh-Tung Le,Cheol-Gi Kim,Yang-Kyu Ahn,Hun-Saeng Chung 한양대학교 세라믹연구소 2008 Journal of Ceramic Processing Research Vol.9 No.5
A ceramic layer was produced on a steel pipe inner surface by a centrifugal thermite process. A powdery mixture of ferric oxide and aluminum was used with the glass whose major compositions were SiO2, Na2O, CaO, and MgO. The ceramic layer consisted of the crystalline structures of corundum (α-Al2O3) and hercynite (FeAl2O4). The amorphous phases of Ca3Al2(SiO4)3, MgFeAlO4 and NaAlSiO4 in the ceramic layer were found to be responsible for a significant improvement of the dense structure. The glass addition increased the density of the ceramic layer from 2.9 g/cm3 to 3.6 g/cm3 and the hardness from 1,450 to 1,800 Hv. A ceramic layer was produced on a steel pipe inner surface by a centrifugal thermite process. A powdery mixture of ferric oxide and aluminum was used with the glass whose major compositions were SiO2, Na2O, CaO, and MgO. The ceramic layer consisted of the crystalline structures of corundum (α-Al2O3) and hercynite (FeAl2O4). The amorphous phases of Ca3Al2(SiO4)3, MgFeAlO4 and NaAlSiO4 in the ceramic layer were found to be responsible for a significant improvement of the dense structure. The glass addition increased the density of the ceramic layer from 2.9 g/cm3 to 3.6 g/cm3 and the hardness from 1,450 to 1,800 Hv.
Does conventional freezing affect sperm DNA fragmentation?
Le, Minh Tam,Nguyen, Thai Thanh Thi,Nguyen, Tung Thanh,Nguyen, Trung Van,Nguyen, Tam An Thi,Nguyen, Quoc Huy Vu,Cao, Thanh Ngoc The Korean Society for Reproductive Medicine 2019 Clinical and Experimental Reproductive Medicine Vol.46 No.2
Objective: Sperm cryopreservation has been widely used in assisted reproductive technology, as it offers great potential for the treatment of some types of male infertility. However, cryopreservation may result in changes in membrane lipid composition and acrosome status, as well as reductions in sperm motility and viability. This study aimed to evaluate sperm DNA fragmentation damage caused by conventional freezing using the sperm chromatin dispersion test. Methods: In total, 120 fresh human semen samples were frozen by conventional methods, using SpermFreeze Solution as a cryoprotectant. Routine semen analysis and a Halosperm test (using the Halosperm kit) were performed on each sample before freezing and after thawing. Semen parameters and sperm DNA fragmentation were compared between these groups. Results: There was a significant decrease in sperm progressive motility, viability, and normal morphology after conventional freezing (32.78%, 79.58%, and 3.87% vs. 16%, 55.99%, and 2.55%, respectively). The sperm head, midpiece, and tail defect rate increased slightly after freezing. Furthermore, the DNA fragmentation index (DFI) was significantly higher after thawing than before freezing (19.21% prior to freezing vs. 22.23% after thawing). Significant increases in the DFI after cryopreservation were observed in samples with both normal and abnormal motility and morphology, as well as in those with normal viability. Conclusion: Conventional freezing seems to damage some sperm parameters, in particular causing a reduction in sperm DNA integrity.
Thi Le Anh,Tan Man Minh,Tung Do Hoang,Tam Do Quang,Hoa Nguyen Minh 한국물리학회 2022 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.80 No.9
A first-principles calculation has investigated the structural, electronic, optical of the CdSe nanocrystal (NC) based on the generalized gradient approximation (GGA) method within the density functional theory. The geometric optimization of the unit cell is in good agreement with our experimental data. The band structure, density of states of the NC were analyzed. The results found that CdSe NC is a direct bandgap with an estimated 1.48 eV. We also report the results of dielectric functions and the refractive index (n) characterized. It is indicated that CdSe materials have excellent photoelectric properties potential applications in optoelectronic devices.
Hoan Minh Tran,Lan Ngoc Tan Phan,Thang Van Le,Thuy Thuy Truong,Tam Huu Nguyen,Khuong Tung Truong,Le-Thu T. Nguyen,Mai Thanh Phong,Ha Tran Nguyen 한국고분자학회 2019 폴리머 Vol.43 No.4
A novel organic photocatalyst, 4-(10H-phenothiazin-10-yl)-N,N-diphenylaniline (PDPA) has been successfully synthesized from triphenylamine and phenothiazine moiety via Buchwald-Hartwig C-N coupling. The chemical structure of catalyst was characterized via proton nuclear magnetic resonance (1H NMR) and the optical properties were investigated via UV-vis spectroscopy. The PDPA has been applied as an organic photocatalyst for metal free atom transfer radical polymerization (O-ATRP). The well-controlled molecular weights of polymethacrylates have been obtained with high yield of 95% and narrow polydispersity index (Đ).
The Effect of R&D Expenditure on Firm Output: Empirical Evidence from Vietnam
BINH, Quan Minh Quoc,TUNG, Le Thanh Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.6
The effect of research and development (R&D) expenditure on firm output is an interesting topic, but hardly explored in developing countries due to the unavailability of data. This study investigates this topic in the context of Vietnam by utilizing a novel dataset of 343 firms listed on the Vietnam Stock Exchange in the 2010-2018 period. The effect of R&D expenditure is examined under the production function framework. In order to obtain the robustness of the quantitative results, we estimate the production function with two coherent techniques including the OLS and 2-SLS. An instrumental variable regression technique is adopted to avoid the endogeneity problem between R&D expenditure and other variables. In our empirical analysis, we find that R&D expenditure has a positive and significant impact on output growth. The finding is robust in both OLS and 2-SLS frameworks. Besides, the output elasticity to R&D expenditure of our result is much higher than the estimated elasticity of other countries. The results imply that a 1% increase in R&D expenditure in Vietnam will help to expand the output more than a 1% increase in R&D investment in other countries. The findings from our paper provide important implications for firm managers, investors, and policymakers in Vietnam.