Journal of Science and Technology - Trang Chủ

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Antibacterial Activity and Interaction Effects of Litsea Cubeba Fruit Essential Oil and Chitosan Against Food-Borne Bacteria
Journal of Science and Technology - Trang Chủ - - 2021
H Van Nguyen, TT Phan, KS Chu, TTT Nguyen
The aims of this study were to investigate the antibacterial activity and interaction effect of Litsea cubeba fruit essential oil (EO) and chitosan (CTS) against food-borne bacteria. The zone inhibition of EO, CTS and EO-CTS mixture against Escherichia coli ATCC 25922, Salmonella Typhimurium ATCC 14028, Staphylococcus aureus ATCC 25923 and Bacillus cereus ATCC 13061 ranged from 39.0-57.3 mm; 11.7-... hiện toàn bộ
Studying on the water pick-up characteristics of UV curable offset ink and the fountain solution without IPA
Journal of Science and Technology - Trang Chủ - - 2021
AT Phung, THC Pham, VC Nguyen, QH Nguyen, TL Nguyen
In UV curable offset printing, ink-water balance is difficult to control, especially in using fountain solution with IPA. The studying on fountain solution without IPA is an essential problem to meet the requirements of the friendly working environment and the UV curable offset technology. In this paper, water pick-up characteristics of the different color UV curable offset inks were determined us... hiện toàn bộ
Designing a Partly Self-Powered Keyboard Based on Triboelectric Effect
Journal of Science and Technology - Trang Chủ - - 2021
SH Hoang, DM Nguyen, DT Nguyen, TH Nghiem, XTD Dinh, VT Le
The purpose of this paper is to design a keyboard using the triboelectric effect (Tribo Electric Nano Generator-TENG) to collect a part of the energy from keystrokes to reduce the power consumption of the keyboard. Using elastic material as the cover on the keyboard to maximize the capture of energy from typing. The keyboard layers are made from common materials such as Al (Aluminum) and PTFE (Pol... hiện toàn bộ
Advanced Technology Application on Monitoring and Forecasting Lobster Farming Environment in Phu Yen
Journal of Science and Technology - Trang Chủ - - 2021
QV Tran, VH Ha, VH Dao, XT Phan, THN Le
Environmental monitoring is an urgent requirement in aquaculture. In this report, the author presents solutions to apply advanced technologies in design and development in monitoring and forecasting lobster farming environment and practical implementation in Phu Yen. This is a complete IoT system including:(1) sensor/actuator module to collect data from the environment;(2) communication module con... hiện toàn bộ
Synthesize Fe2O3 polyhedral applying for rechargeable batteries
Journal of Science and Technology - Trang Chủ - - 2021
TH Bui, TA Trinh
Polyhedral Fe2O3 materials were synthesized by hydrothermal method. Their structure, size, and morphology were investigated by X-ray diffraction and scanning electron microscopy. The electrochemical characteristics of Fe2O3 electrodes were studied via cyclic voltammetry measurement. The effects of the additives on the electrochemical properties of the electrode were also studied. The results show ... hiện toàn bộ
Improve the Strength of the Pre-Stressed Steel by Combination of the Alloying Addition and Heat Treatment
Journal of Science and Technology - Trang Chủ - - 2022
CS Nguyen, QD Ngo, AH Bui
Laboratory-scale experiments were carried out to improve the strength of the pre-stressed steel by combination of the Cr-Ti addition and heat treatment. A predetermined amount of the scrap and some ferrous alloys (such as FeMn, FeSi, FeCr and FeTi) was melted in the induction furnace. The molten steel was casted into the φ45 mm ingot which was then hot forged into the φ25 mm, subsequently prepared... hiện toàn bộ
Improvement of Gel Properties of Salt-Reduced Fish Sausage by Adding Food Additives
Journal of Science and Technology - Trang Chủ - - 2024
TY Do, TDT Nguyen, TTN Nguyen
Low-salt seafood products are gaining popularity for their lower health risks, while the food industry faces technical challenges in improving its quality. In Vietnam, an average of 100g of sausage contains 1.5 g of NaCl, equivalent to 600 mg of sodium, nearly half of the recommended daily salt intake and 2/3 of the sodium needs of children from 4 to 6 years old. This study aimed to assess the eff... hiện toàn bộ
Research and Manufacture of Hydraulic Butt Fusion Welding Machine for Different Plastic Material Pipes
Journal of Science and Technology - Trang Chủ - - 2024
TD Nguyen
This paper introduces the research and manufacture of a hydraulic butt fusion welding machine that permits to weld dissimilar plastic pipes. In welding of dissimilar plastic pipes, the welding parameters at two pipe ends will be different. The butt fusion welding cycle of two dissimilar plastic pipes is established. The fabricated welding machine consists of the following basic components: machine... hiện toàn bộ
Temperature field in MIG welding of thin plate of stainless steel
Journal of Science and Technology - Trang Chủ - - 2021
TD Nguyen
The butt weld joint of SUS316L stainless steel is considered in this study. The weld joint is not beveled, has a gap and is welded in one pass by MIG welding process. First, the welding parameters are determined through calculation and test welding for the butt joint of two plates of 3 mm in thickness. Then these welding parameters are used as input date to calculate and determine the temperature ... hiện toàn bộ
Two-Layers DDoS Attack Detection Model Using Machine Learning in Software Defined Networking
Journal of Science and Technology - Trang Chủ - - 2023
NT Nguyen, HT Nguyen
Software Defined Network is a new architecture designed to make the network infrastructure more flexible and easier to manage. It allows network administrators to configure network parameters as well as integrating new functions using programming languages easily. Thanks to the centralized control paradigm, it is easier to collect information of the entire network, which facilitates the implementa... hiện toàn bộ
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