Exploring phenolic contents, antioxidant and in vitro anti-inflammatory activities of Ficus hispida L.f. leaves
By Vu Cong Danh
Ficus hispida L.f. (FH) is among the widely cultivated tree species in Asian regions. The aim of this work was to determine phenolic and flavonoid contents, antioxidant, in vitro anti-inflammatory activities of FH extracts prepared with methanol (ME), ethanol (ET) and ethyl acetate (EA). The extract obtained from ethyl acetate ...
Research on bagasse recycle total paper application in life
By Nguyễn Thị Xuân Hạnh, Nguyễn Thị Bích Ngọc, Võ Thị Hải Yến
In the new era, paper is still the main source of raw materials for daily life and production activities. Therefore, the research team explored recycling paper from bagasse to reduce waste and limit the depletion of available resources. The main material is bagasse with binders of aloe vera, corn starch, ...
Application of “Theory of Change” in trans-disciplinary research at Lap Giai Domestic Wood Company, Ben Cat District, Binh Duong Province
By Chế Đình Lý
This article is the results of the project "Assessment of health and safety risks for wood industry workers researched at Lap Giai company, Ben Cat district, Binh Duong province". Theory of change (ToC) is an intervention strategy to reduce worker health risk and safety that was initially established by ...
Survey transient stability of power system with penetration of wind power generation
By Hà Văn Du
Generation of electricity from wind power a renewable energy source, is continually attracting the attention of investors, researchers and electrical utilities. It has been predicted that the annual growth of wind power between 1998 and 2040 would be between 20% and 30%. This shows the increase in impact of the ...
The Demonstration Device For Remote Light Control Via The Internet By Using MQTT Protocol And Dual-Chip ESP32
By Vo Gia Thinh
In this article, the primary purpose is to design and implement a remote light control example that makes use of the Arduino IDE platform for programming, the MQTT protocol, and an ESP32 microcontroller, which has a dual-core CPU as well as Wi-Fi and Bluetooth capabilities. This aspect is related to ...
Optimal Design of Geometrically Nonlinear Structures Using Topology Optimization
By Ho Duc Dung
This study deals with the stiffness design of geometrically nonlinear structures using
topology optimization. Bi-directional Evolutionary Structures Optimization (BESO) is
employed to implement the design process. The geometrically nonlinear behavior of the
structures are modeled using a total Lagrangian finite element formulation and the
equilibrium is found using a Newton-Raphson iterative scheme. The topology ...
Researching of compost production from mixed material of cow dung, coir and domestic waste
By Le Thi Dao
Research results show that compost was created at the rate of C / N: 25/1 by mixing ingredients 2.5 grams of cow manure, 3g of organic waste, 0.01g of coir based on calculation of content. C and N in each material; With the humidity of 60% based on the calculation ...
Analysing Energy and Environmental Performance of a Residential Grid-Connected Photovoltaic System in Thu Dau Mot City, Vietnam
By Nguyen Ba Thanh, Nguyen Phuong Tra
The electricity obtained from the photovoltaic (PV) system highly depends on various factors such as geographical location, solar radiation, weather conditions and orientation of solar panels. The electricity produced by the solar PV system can be assessed by using simulations. This paper presents a technical feasibility assessment of a 10 ...
Spent Coffee Grounds Collected in Ho Chi Minh City: A Good Source of Phenolic Acids and Fatty Acids
By Vũ Công Danh, Vũ Thị Quyền , Nguyễn Hà Diệu Trang
Coffee is among the favorite drinks in Vietnam and many other countries. Production and consumption of coffee have released a huge amount of spent coffee ground. This study aimed to determine phenolic acids and fatty acids of spent coffee grounds collected in Ho Chi Minh city and how phenolic acid ...
Determine the parameters of PID algorithm in liquid level control controlled by PLC s7 1500 using 3d virtual reality model
By Pham Hong Thanh, Nguyen Thanh Doan
It is very common to stabilize the preset value (Wanted value) of analog signals such as temperature, pressure, weight, flow, speed in automatic control. However, these control objects often have some problems such as overshooting, taking a long time to bring the system to a steady value, and large errors. ...
Distribution system reconfiguration using water cycle algorithm
By Tran Van Thanh
High power losses are a great concern in operating electric distribution system. Reconfiguration is one of the most economic approaches for reducing power losses of the system. This study suggests a technique for dealing with the distribution system reconfiguration problem based on a water cycle algorithm for minimizing active power ...
Design of hand-wash equipment prevention Covid-19 use solar energy
By Thanh Tung Nguyen
SARSCOV-2 virus and new strains have been spreading in most countries and regions around the world, the COVID-19 epidemic it causes has infected millions of people, the urgent need is to prevent their spread. On the market there are many types of hand wash equipment automatically spray disinfectant solution used ...