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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.
Quoc Minh Pham,김선욱 한국화학공학회 2016 Korean Journal of Chemical Engineering Vol.33 No.1
High surface area polyaniline (HSA PANI) nanofibers were synthesized through oxidative polymerization of aniline in compressed CO2 using cobalt chloride as an additive. SEM and TEM analyses showed that the HSA PANI nanofibers had a coarse surface of very thin nanofibers. The HSA PANI nanofibers had a fairly uniform diameter range of 70-90 nm with a length of 0.5-1 μm, and showed an electrical conductivity (EC) of 3.46 S/cm. TGA analysis revealed that the HSA PANI nanofibers had more doping substances than did ordinary PANI nanofibers. In the case of the HSA PANI nanofibers, direct measurement of the surface area using gas adsorption method showed high value of 68.4m2/g, which was nearly twice that of ordinary PANI nanofibers. The HSA PANI nanofibers were used to fabricate the hydrogen sensor, exhibiting a large increase in resistance upon exposure to hydrogen gas. The hydrogen sensor in this work showed excellent characteristics, such as high sensitivity and short response time. The limit of detection (LOD) and limit of quantification (LOQ) of the hydrogen sensor were very low to show 40 ppm and 133 ppm of hydrogen, respectively.
Hai Le Xuan,Quoc-Dong Hoang,Soon Geul Lee,Dat Pham Xuan,Hoang Tran Viet,Minh Pham Van,Hung Pham Van,Hung Pham Viet,PHAM DUC TUAN,Duc Anh Nguyen 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.2
Ballbots, which have been studied for over ten years, are under-actuated mobile robots that operate using the inverted pendulum paradigm. Controlling a ballbot poses a number of challenges, including maintaining the stable upright posture from the ground in all directions and making sure it follows the desired trajectory. External factors such as a minor change in contact surface properties or fabrication errors can affect the system's stabilization and transfer capabilities. In this study, an adaptive hierarchical sliding mode control algorithm based on an artificial neural network is developed to make the ballbot robust to external factors. The use of the proposed controller ensures system stability despite uncertainties including friction, accidental centrifugal forces and gravity that occur when the ballbot follows the reference trajectory. The system stability is guaranteed on the basis of Lyapunov theory. Control efficiency and robot stability under system uncertainties are demonstrated by numerical simulation.
Chemical profiles and biological activities of essential oil of Citrus hystrix DC. peels
Do Minh Long,Le Pham Tan Quoc,Tran Thi Phuong Nhung,Vuong Bao Thy,Nguyen Le Quynh Nhu 한국식품저장유통학회 2023 한국식품저장유통학회지 Vol.30 No.3
Essential oil (EO) was extracted from the peel of Citrus hystrix DC. originating from Tinh Bien, An Giang province (Vietnam), using steam distillation. The study aimed to determine some physicochemical properties of Citrus hystrix peel EO (ChpEO), including the acid value (AV), saponification value (SV), ester value (EV), density, specific gravity, and freezing point. The chemical composition was also analyzed by gas chromatography-mass spectrometry (GC-MS). Compounds like β-pinene (30.19%), D-limonene (22.15%), and sabinene (21.37%), with antioxidant and antibacterial properties, had a relatively high content. The EO was also capable of inhibiting the growth of both Gram-positive and Gram-negative bacteria, including Pseudomonas aeruginosa (ATCC 27853), Staphylococcus aureus (ATCC 25923), Salmonella typhimurium (ATCC 13311), and Bacillus cereus (ATCC 11778) specifically.
Nguyen, Huynh Quoc,Zada, Sahib,Lai, Trang Huyen,Pham, Trang Minh,Hwang, Jin Seok,Ahmed, Mahmoud,Kim, Deok Ryong Elsevier 2019 Neuroscience Letters Vol.701 No.-
<P><B>Abstract</B></P> <P>Oxidative damage in neurons including glutamate excitotoxicity has been linked to increasing numbers of neuropathological conditions. Under these conditions, cells trigger several different cellular responses such as autophagy, apoptosis, necrosis and senescence. However, the connection between these responses is not well understood. In this study, we found that the 60-kDa BECN1 was specifically degraded to a 40-kDa fragment in hippocampal HT22 cells treated with 5 mM glutamate. Increased BECN1 cleavage was specifically associated with a decrease in cell viability under oxidative stress. Interestingly, this BECN1 cleavage was specifically inhibited by a calpain inhibitor ALLN but was not affected by other protease inhibitors. Also, the BECN1 cleavage was not detected in calpain-4-deficient cell lines. Furthermore, calpain cleaved BECN1 at a specific site between the coiled-coil domain and Bcl2 homology 3 domain, which is associated with the anti-apoptotic protein Bcl-2. Moreover, some cellular senescence markers, including β-galactosidase, p21, p27<SUP>Kip1</SUP>, p53 and p16<SUP>INK4A</SUP>, increased proportionally to those of BECN1 cleaved fragments. These results suggest that calpain-mediated BECN1 cleavage under oxidative conditions is specifically associated with cell death induced by cellular senescence.</P> <P><B>Highlights</B></P> <P> <UL> <LI> BECN1 was specifically degraded to a 40-kDa fragment accompanying with decrease of cell viability under oxidative stress. </LI> <LI> BECN1 cleavage was inhibited by calpain inhibitor but not by other protease inhibitors. </LI> <LI> Calpain cleaves BECN1 at a specific site between CCD and BH3 domains. </LI> <LI> BECN1 degradation stimulates senescence-associated cell death at the oxidative stress. </LI> </UL> </P>
Nguyen Thi Minh Hong,Nguyen Ba Doan,Nguyen Huy Tiep,Le Viet Cuong,Bui Nguyen Quoc Trinh,Pham Duc Thang,김동현 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3
In this work, we study the magnetic properties of a CoFe/NiFe/PZT heterostructured nanocompositethat is affected by the strain in the PZT substrate when a voltage in the range from –250to 250 V is applied. An interesting electric-voltage-controlled magnetic anisotropy, with a relativeincrease in magnetization up to above 100%, is observed. This brings a new challenge to operate alow-power-consuming spin electronic device. We also utilize a theoretical model based on interfacecharge-mediated and strain-mediated magnetic-electric coupling to understand the change in themagnetic properties of the investigated material.
Tien Huynh Manh,Khanh Quoc Le Tran,Phat Tan Ho,Man Minh Vo,Thong Quang Pham,Thong Duy Vo 대한소화기학회 2023 대한소화기학회지 Vol.81 No.6
Strongyloidiasis, a chronic helminth infection caused by the parasitic nematode Strongyloides stercoralis, has various clinical manifestations. Although rare, duodenal obstructions and venous thromboembolism are possible complications of strongyloidiasis. This paper presents the case of a 47-year-old Vietnamese male with a history of right lower limb edema, anorexia, nausea, vomiting, diarrhea, and abdominal discomfort lasting for four months. Venous Doppler ultrasound detected a thrombus in the right femoral vein, while an abdominal CT scan revealed a mass lesion suggestive of a lower bile duct tumor. Esophageogastroduodenoscopy showed a friable duodenal cap mucosa with multiple ulcers and edematous mucosa of the second part of the duodenum that caused a partial lumen obstruction. The final histological examination of the biopsy specimen revealed chronic duodenitis with larvae consistent with Strongyloides stercoralis. The patient was treated with Ivermectin for two weeks and anticoagulation therapy for three months. After treatment and a six-month follow-up, the patient's gastrointestinal symptoms and leg swelling resolved completely. This is the first documented case of a patient in Vietnam with strongyloidiasis who presented with venous thromboembolism and duodenal obstruction.