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
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...
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
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...
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 ...
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
Stability and activity of TG25P phage in control of Aeromonas hydrophila in striped catfish pond water
Tập 21 Số 2 - Trang 64-70 - 2018
Introduction: Striped catfish (Pangasianodon hypohthalmus) is a native
freshwater fish species in the Mekong Delta, Vietnam, and significantly
contributes to national aqua exports. Currently, however, the sustainable
development of striped catfish farming is being affected by bacterial pathogen
infections, of which hemorrhagic septicemia caused by Aeromonas hydrophila
bacteria is one of the most c...
#Antibiotic resistance #Fishpond water #A. hydrophila #Phage stability #Striped catfish
Chemical composition analysis and antibacterial-antiinflammatoryactivity tests of tamanu seed oil extracted by supercritcial fluid technology
Tập 19 Số 3 - Trang 146-154 - 2016
The natural product of tamanu oil is valuable in medicine and cosmetic. In this
study, the tamanu oil was extracted by supercritical CO2 (sCO2) and Soxhlet
(using hexane solvent) methods. The fatty acids and coumarins compound of the
obtained tamanu oil were analyzed by gas chromatography–mass spectrometry
(GC-MS). The antibacterial and anti-inflammatory activities were also
investigated by the di...
Bézier trajectory tracking control of The Omnidirectional Mobile Robot based on a linear time- varying state feedback controller
Tập 25 Số 2 - Trang 2444-2452 - 2022
Introduction: The controller design method based on linear time varying state
feedback controller is proposed to enforce an omnidirectional mobile robots
(OMRs) to track a given Bézier trajectory. Methods: Initially, the linear error
model of the robot system is obtained and used in the design of the linear time
varying state feedback controller. Next, the controller gains are determined
according...
#omnidirectional mobile robot #kinematic error model #linear time-varying state feedback controller #trajectory tracking #Bézier trajectory