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Huynh Le Thanh Nguyen,Tran Thanh Nhut,Ho Thi Thanh Nguyen,Le Xuan Hoa,Le Viet Hai,Nguyen Thai Hoang 한국탄소학회 2022 Carbon Letters Vol.32 No.6
Enhancing the capacitive deionization performance requires the inner structure expansion of porous activated carbon to facilitate the charge storage and electrolyte penetration. This work aimed to modify the porosity of coconut-shell activated carbon (AC) through CO2 activation at high temperature. The electrochemical performance of CO2-activated AC electrodes was evaluated by cyclic voltammetry, charge/discharge test and electrochemical impedance spectroscopy, which exhibited that AC-800 had the superior performance with the highest capacitance of 112 F/g at the rate of 0.1 A/g and could operate for up to 4000 cycles. Furthermore, in the capacitive deionization, AC-800 showed salt removal of 9.15 mg/g with a high absorption rate of 2.8 mg/g min and Ni(II) removal of 5.32 mg/g with a rate close to 1 mg/g.min. The results promote the potential application of CO2-activated AC for desalination as well as Ni-removal through capacitance deionization (CDI) technology.
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.
A Computer-Aided and Robot-Assisted Surgical System for Reconstruction of Anterior Cruciate Ligament
Le Minh Huynh,김윤혁 한국정밀공학회 2013 International Journal of Precision Engineering and Vol. No.
We have developed the computer-aided and robot-assisted system for anterior cruciate ligament (ACL) reconstruction surgery. The surgical robot system includes the pre-planning module, registration and navigation module and automatic tunnel drilling module. The sawbone experiments were performed for both of single-bundle and double-bundle ACL reconstruction surgery. The experimental results were compared with the planning results in terms of the position and angle accuracies, and safety angles. The experiment accuracies were in clinically acceptable range. The developed surgical robot system would be further investigated by performing cadaver studies for future clinical trials.
LE, Thai Thanh Dat,HO, Thi Thanh Ngan,LE, Nguyen Truc Quyen,HUYNH, Thi Khanh Tuyen,NGUYEN, Minh Tri,LUU, Thi Mai Anh,HOANG, Thi Phuong Thao,NGUYEN, Trong Luan Korea Distribution Science Association 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.6
The purpose of the study is to analyze the significant impacts of expectations, performance, complaints, and fairness that affect consumer satisfaction. The methodology involves reviewing and referencing relevant literature carefully, then proposing a model for customer satisfaction. This study is empirically based on a survey with 50 respondents who work in the field of import and export in the region stretching from the north to the south of Vietnam. The sampling method used in this study is the in-depth interview method. The results show that: (1) expectation has a specific impact on customer satisfaction, (2) performance has a positive impact on customer satisfaction, and (3) complaint which is an intermediary factor between expectation, performance, and fairness has an impact on satisfaction, (4) fairness has a positive effect on satisfaction, in addition, fairness is an extremely important feature when customers choose an import-export service. Research implies that increasing expectations, performance, and fairness results in an improved customer experience and satisfaction when they use the service. It is suggested that the complaint factor continue to be studied and looked into because it still has some effect on satisfaction and is an intermediate variable that changes how the other factors relate to each other.
Huynh Le Man,Eldon R. Rene,시셔,박흥석 대한토목학회 2011 KSCE JOURNAL OF CIVIL ENGINEERING Vol.15 No.6
In the city of Ulsan, South Korea, Food-Waste Leachate (FWL) is let off into the ocean, which eventually poses a severe threat to the marine environment. Preliminary results suggest that this leachate, when subjected to an optimized fermentation process can generate ethanol. A 2^3-factorial design was employed, and the effects of temperature (30-40oC), pH (4-6), and reducing sugar concentration (RSC, 45-75 g L^(−1)) on ethanol yield was investigated through controlled batch experiments using Saccharomyces cerevisiae (KCTC-7904), a species of budding yeast. A maximum yield of 0.31 g ethanol g^(−1) RSC corresponding to an ethanol concentration of 23.56 g L^(−1) was achieved under the following test conditions: temperature - 40oC, pH - 4.0, and RSC - 75 g L^(−1). Among the different parameters studied, both temperature and RSC had a strong synergistic effect on ethanol yield, while the effects due to changes in pH values were minimal. Anew, under the test conditions, the 2-way interaction effect between temperature × pH and the 3-way interaction between temperature × pH × RSC were negative, while all other interactions, were positive and also found to be statistically significant at 5% probability (p value < 0.05). The results were represented by a suitable model equation, which could be easily applied for scale-up to produce value-added ethanol, by sterilizing FWL prior to fermentation. The practical implications of this research have been stated.
Factors Affecting the Choice of Banks: Do Bank’s Interest Rate, Employee Image and Brand Matter?
Le Kieu Oanh DAO,Huynh Huu LOC,Van Chien NGUYEN,Le Thi Thuy HANG,Thi Tuyet DO 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.1
The banking system provides a number of important functions for the economy and is also the lifeblood and financier of the economy in each country. Large amounts of idle money have not been exploited by banks; however, banks still depend on loans, including loans from foreign banks, to meet the growing demand, as such, for banks, the cost of capital is high, the stability and business efficiency are low and banks have not promoted their internal resources to grow steadily. To achieve the goal, this research analyzes the factors affecting the choice of bank for the deposit decisions of customers in Vietnam. The study used a sample data of 250 individuals and SPSS software was used to analyze the data. The results showed that customer policy has a positive effect on customers’ deposit decisions in a bank, and this is new evidence regarding behavioral theory in the case of Vietnam. Results further demonstrated that other factors such as employee image, brand, interest rate, relative influencing, and transaction time positively impact the choice of bank for the deposit decisions of customers. However, the bank’s promotion strategies had no impact on the choice of bank for the deposit decisions of customers. Besides, employee image is the most influential factor in the deposit decisions, followed by the bank’s brand and interest rate.
A Computer-Aided and Robot-Assisted Surgical System for Reconstruction of Anterior Cruciate Ligament
Huynh, Le Minh,Kim, Yoon Hyuk Korean Society for Precision Engineering 2013 International Journal of Precision Engineering and Vol.14 No.1
We have developed the computer-aided and robot-assisted system for anterior cruciate ligament (ACL) reconstruction surgery. The surgical robot system includes the pre-planning module, registration and navigation module and automatic tunnel drilling module. The sawbone experiments were performed for both of single-bundle and double-bundle ACL reconstruction surgery. The experimental results were compared with the planning results in terms of the position and angle accuracies, and safety angles. The experiment accuracies were in clinically acceptable range. The developed surgical robot system would be further investigated by performing cadaver studies for future clinical trials.