Tạp chí Kỹ thuật và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh
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Study on parameters on cutting AAC by wires
Tạp chí Kỹ thuật và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 4 Số 1 - Trang 731-738 - 2021
Autoclaved Aerated Concrete (AAC) is a Lightweight, Load-bearing, High-insulating, Durable building product, which is produced in a wide range of sizes and strengths. AAC Blocks is lightweight and when compared to the red bricks, AAC blocks are three times lighter. AAC block is rapidly developing in Vietnam. The block has more advantages such as precast, and easy installation. AAC is produced from...... hiện toàn bộ
#Autoclaved Aerated Concrete #steel wire #roughness
A combination of near - infrared and fluorescence techniques for detecting early tooth lesions
Tạp chí Kỹ thuật và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 5 Số 1 - Trang 1371-1379 - 2022
In dentistry, X-ray method has been considered as the gold standard for identifying different types of structural damage in teeth. However, X-rays not only have adverse effects on patients’ health but also have failed in detecting small and early-stage lesions due to the low sensitivity of the method to these types of lesion. In order to overcome the disadvantages of X-ray method, in recent years,...... hiện toàn bộ
#Dental lesions #fluorescence #infrared
Adaptive multilayer T-S fuzzy controller for nonlinear SISO system optimized by differential evolution algorithm
Tạp chí Kỹ thuật và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 3 Số SI1 - Trang SI9-SI21 - 2020
In this paper, the authors propose a novel adaptive multilayer T-S fuzzy controller (AMTFC) with an optimized soft computing algorithm for a class of robust control uncertain nonlinear SISO systems. First, a new multilayer T-S fuzzy was created by combined multiple simple T-S fuzzy models with a sum function in the output. The multi-layer fuzzy model used in nonlinear identification has many advan...... hiện toàn bộ
#Multilayer T-S Fuzzy #Inverse Controller #Adaptive Control #Differential Evolution #Lyapunov Theory
Advanced fabrication of lightweight aerogels from fly ash for thermal insulation
Tạp chí Kỹ thuật và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 4 Số 1 - Trang 637-644 - 2021
For the first time, an environmentally friendly and effective procedure to produce high-value engineering aerogels from fly ash (FA) has been developed by dispersing FA particles into a mixture of biodegradable polyvinyl alcohol (PVA) and carboxymethyl cellulose (CMC), followed by freezedrying. The effect of FA content on the physical properties, morphology, mechanical strength, and thermal conduc...... hiện toàn bộ
#Fly Ash #Aerogel #Thermal Insulation #Morphology #Mechanical Strength
Comparison of settlement between granular columns with and without geosynthetic encasement
Tạp chí Kỹ thuật và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 2 Số 2 - Trang 116-122 - 2019
Granular columns have been used to improve load bearing capacity and to reduce the settlement of the soft soils for the past three decades. However, for soft soils with less than 15 kPa of undrained shear strength, the use of granular columns is ineffective because the soft soil does not mobilize sufficiently lateral confinement stress to balance the column lateral stress, which leads to the later...... hiện toàn bộ
#Granular column #Geosynthetic encased column (GEC) #Soft soil #Settlement
The surveys of the methods for reducing the water content of honey
Tạp chí Kỹ thuật và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 2 Số 2 - Trang 97-104 - 2019
Honey is a nutritious, sweet-tasting drink with the natural fragrance of flowers, so it is favored and widely used in many areas of life. Hard qualitative norms on honey quality are such as color, content of HMF, reducing sugar, microorganisms ... One of the causes of rapid change in bile quality during use is the amount of water in honey. The surveys of the methods for reducing the water content ...... hiện toàn bộ
#hive model #honey #hydroxymethylfurfural #reducing water #silicagel
A study on designing controller and building control algorithms for 6dof robot applied in education
Tạp chí Kỹ thuật và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 1 Số 2 - Trang 33-41 - 2019
This paper proposes a method of designing controller and building control algorithms for an industrial robot to establish laboratory lectures for education. The robot is used in this paper is SV3X robot, a product of MOTOMAN. In this research, we present how to design and manufacture a controller for an old robot. After that, we propose labortory lectures based on this controller. A new graphic us...... hiện toàn bộ
Effects of transient recovery voltage and degradation solutions when opening shunt reactor at 500 kV O Mon substation
Tạp chí Kỹ thuật và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 2 Số 2 - Trang 86-96 - 2019
In 500 kV power systems, shunt reactors are usually used to control the reactive power balance and regulate the operating voltage within the permissible limits. Therefore, shunt reactors may be frequently switched daily. Using circuit breakers to switch shunt reactors will produce transient components during this period. When a shunt reactor is switched on, the inrush current will appear and when ...... hiện toàn bộ
#Shunt reactor #Transient Recovery Voltage #Inductor load switching #switching overvoltage
Research on key technology and equipment for cultivation of Spirulina platensis from the CO2 capture from exhaust smoke
Tạp chí Kỹ thuật và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 4 Số 3 - Trang 1187-1193 - 2021
This paper presents the results of experimental research on key technology and equipment for cultivation of Spirulina platensis from the CO2 capture from the smoke of rice husk boiler with the climate conditions in Viet Nam. The experimental cultivation of Spirulina platensis in the Zarrouk medium were conducted in the 1 litter of volume’s photobioreactor which has stirred with aeration pump. Expe...... hiện toàn bộ
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