Tạp chí số 42
Science & Technology
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RESEARCH ON EFFECTS OF ADDITIONAL HHO GAS ON THE WORKING EMISSION CHARACTERISTICS OF GASOLINE ENGINE
This article presents the results of simulation research to determine the effect of adding HHO gas on the intake manifold for gasoline engines on the working characteristics and emissions at a speed of 6000 rpm with a throttle opening of 50%. The research engine is the Toyota 4A…
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Face detection is an essential component of computer vision in artificial intelligence, and it finds widespread applications in both industrial manufacturing and daily life. This paper investigates a face detection system using the Haar Cascades algorithm to recognize face objec…
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Among various types of gear machining tools, gear hob is a useful cutting tool, with high productivity and wide versatility. The front face of gear hob is the square Archimedes screw face. It is chosen as the front face of the gear hob because it ensures reasonable parameters of…
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This study endeavors to optimize two experimental factors: the packaging area-to-product weight ratio (cm²/g) and the storage temperature (°C), which significantly influence the equilibrium conditions of oxygen (%) and carbon dioxide (%) concentrations in the packaging environme…
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Chrysanthemum, ha kho thao and green tea are three herbs rich in bioactive compounds that are beneficial to the health of users, and used as raw materials for the production of chrysanthemum tea bags. The article presents research results on the technology of producing chrysanth…
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In this study, the photocatalytic activity of TiO2 was investigated for the degradation of methylene blue under UV irradiation. The TiO2 was synthesized via hydrothermal method at vary reaction time and temperature. TiO2, manufactured at 160oC in 8 hours, was achieved the highes…
Economics & Social Sciences
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The study was conducted to determine the influence of psychological capital on the working performance of garment workers in Nam Dinh city. Four job-specific attitudes of employees studied are job satisfaction, organizational commitment, work stress, and intention to quit. Resea…
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The competitive assessment model of logistics service providers identifies the factors and their influence, including (1) Organizational and management capacity, (2) Marketing capacity, (3) Human resources, (4) Pricing strategy, (5) Financial capacity, (6) Service quality). From…
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Logistics is a new and growing field that plays a large role in the economic development of the country. Dry port and ICD – Inland Container Depot play a part in supporting companies in fulfill export and import activities faster. In addition, Dry port and ICD are also considere…
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EXTENDED PRODUCER RESPONSIBILITY (EPR) WITH THE DEVELOPMENT OF THE CIRCULAR ECONOMY MODEL IN VIETNAM
The circular economy model is being widely applied in many countries around the world, including Vietnam, with a focus on managing and regenerating resources in a closed loop, minimizing emissions. environment. In addition, the 2020 Environmental Law stipulates that EPR (Extende…
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Social responsibility is an interested research area in Vietnam, in tourism this issue is of special concern since the tourism industry issued standards on responsible tourism. The article focuses on building a theoretical basis and analyzing customers' perceptions about the soc…
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Today, higher education is considered a type of service and students play the role of both customers directly participating in the entire process of creating services and products of education and training. Accordingly, student satisfaction with the quality of training services…
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Hung Yen is a purely agricultural province, with diverse and rich human resources, a system of agricultural landscapes, traditional craft villages, and typical elements of the wet rice civilization region. Many favorable conditions for developing agritourism. However, in recent…
Scientific Forum
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Chitin is a naturally occurring polymer, non-toxic, and has good biocompatibility. However, it needs to have characteristics consistent with technological requirements. Many authors have published results regarding this matter. It is possible to create nano chitin with nanometer…
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Through a survey of workers working at commercial banks in Nam Dinh city, using quantitative and qualitative methods, the author has found factors that influence the work motivation of this group. These are factors such as income, working conditions, reward policies and promotio…
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With current fuel consumption rates, the crude oil reserves are predicted to be depleted within the next 50 years. Therefore, scientists worldwide are striving to improve the reduction of fossil fuel consumption and reduce harmful emissions caused by combustion engines. This art…
