Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh
1859-0128
Việt Nam
Cơ quản chủ quản: Đại học Quốc gia Thành phố Hồ Chí Minh
Phân tích ảnh hưởng
Các bài báo tiêu biểu
OPTIMIZING LOCATION AND SIZING OF DISTRIBUTED GENERATION ON DISTRIBUTION SYSTEMS
Tập 10 Số 3 - Trang 55-62 - 2021
Recent changes in the electric utility infrastructure have created opportunities for many technological innovations, including the employment of distributed generation (DG) to achieve a variety of benefits. Both utility and customers benefit from DG. Among many benefits of distributed generation, there are many directions to solve problem of DG but all also want to accomplish to achieve the optima......
FABRICATION OF ANTIBACTERIAL WATER FILTER BY COATING SILVER NANOPARTICLES ON FLEXIBLE POLYURETHANE FOAMS
Tập 12 Số 7 - Trang 48-57 - 2020
In this paper, we fabricated silver-coated polyurethane foams and used it as a bacterial filter for contaminated drinking water. Flexible PU foams were soaked in silver colloidal solutions for 10hrs, then washed and air-dried at room temperature. The prepared silver colloidal solutions and silver-coated PU materials were characterized by several techniques including TEM, FE-SEMEDS, UV-Vis, ICP-AAS......
MICROWAVE-ASSISTED EXTRACTION OF POLYPHENOLS FROM FRESH TEA SHOOT
Tập 9 Số 8 - Trang 69-76 - 2021
Fresh tea shoots (one shoot and two or three young leaves) were extracted using microwave-assisted extraction method (MAE). Several factors such as ethanol concentrations (0-99.5° (volume percentage)), material: solvent ratio (1:4 to 1:12), extraction time, oven power were studied to optimise conditions at laboratory scale. MAE archived good yield (82.46 %) after 6 minutes microwave radiation, tha......
EXISTENCE OF SOLUTIONS OF FUZZY CONTROL DIFFERENTIAL EQUATIONS
Tập 10 Số 5 - Trang 5-12 - 2021
Recently, the field of differential equations has been studying in a very abstract method. Instead of considering the behaviour of one solution of a differential equation, one studies its sheaf-solution (see[10-11]). Instead of studying a differential equation, one studies differential inclusion (see[9]). Especially, one studies fuzzy differential equation (a differential equation whose variables ......
EXISTENCE OF SOLUTIONS OF SET CONTROL DIFFERENTIAL EQUATIONS
Tập 10 Số 6 - Trang 5-14 - 2021
Recently, the field of differential equations has been studying in a very abstract method. Instead of considering the behaviour of one solution of a differential equation, one studies its sheaf-solution (see[8]). Instead of studying a differential equation, one studies differential inclusion (see[10]). Specially, one studies set differential equation ( a differential equation whose variables and d......
A preliminary study on gas metal arc welding-based additive manufacturing of metal parts
Tập 23 Số 1 - Trang 422-429 - 2020
Introduction: In the past three decades, additive manufacturing (AM), also known as 3D printing, has emerged as a promising technology, which allows the manufacture of complex parts by adding material layer upon layer. In comparison, with other metal-based AM technologies, gas metal arc welding-based additive manufacturing (GMAW-based AM) presents a high deposition rate and has the potential for p......
#Additive manufacturing #Gas metal arc-based additive manufacturing #Mild steel #Microstructures #Mechanical properties
Synthesis of silica nanoparticles from rice husk ash
Tập 20 Số K7 - Trang 50-54 - 2018
Silica nanoparticles (SiO2 NPs) were synthesized from rice husk ash (RHA) by chemical treatment and calcination. The size of SiO2 NPs evaluated by transmission electron microscope (TEM) was of 20 - 50 nm and the size distribution of SiO2 NPs measured by dynamic laser scattering (DLS) was of Gaussian mode. The X-ray diffraction (XRD) pattern with only one peak at 2θ ~ 220 confirmed the amorphous ph......
#silica nano #rice husk ash #calcination #particle size
Digital transformation in the business: a solution for developing cash accounting information systems and digitizing documents
Tập 24 Số 2 - Trang 1975-1987 - 2021
Digital transformation is becoming an inevitable trend, having a profound impact on business activities, processes,, and modelsands improving the operational efficiency of businesses. In enterprises, especially small and medium-sized enterprises, accounting professions are mainly still handled manually on books and documents. They have not standardized the professions, especially those that arise ......
NEURAL NETWORK CONTROL OF PNEUMATIC ARTIFICIAL MUSCLE MANIPULATOR FOR KNEE REHABILITATION
Tập 11 Số 3 - Trang 16-29 - 2021
An interesting alternative to electric actuators for medical purposes, particularly promising for rehabilitation, is a pneumatic artificial muscle (PAM) actuator because of its muscle–like properties such as tunable stiffness, high strength to weight ratio, structure flexibility, cleanliness, readily available and cheap power source, inherent safety and mobility assistance to humans performing tas......
Roadmap, routing and obstacle avoidance of AGV robot in the static environment of the flexible manufacturing system with matrix devices layout
Tập 24 Số 3 - Trang 2091-2099 - 2021
In Flexible Manufacturing Systems (FMSs), Automated Guided Vehicles (AGVs) are considered an important element of the manufacturing system. The positioning system of the AGV robot is increasingly intelligent to integrate with manufacturing systems and through an IoT connectivity to find its path and flexibly avoid obstacles without the need for a fixed traditional navigation system. In order for t......
#Automated Guided Vehicles Robot #AGV's roadmap #optimal routing algorithm #obstacle detection