Thu Dau Mot University Journal of Science


All Articles

Comparing the potential of three dracaena species to remove lead (pb) from artificial aqueous media

Comparing the potential of three dracaena species to remove lead (pb) from artificial aqueous media

By Hồ Bích Liên
The study was undertaken to compare the lead accumulation and removal of Dracaena sanderiana, Dracaena reflexa, and Dracaena deremensis on artificial lead solutions to apply plants in lead pollution treatment. The experiment consisted of 6 treatments corresponding to 3 investigated species of Dracaena. Each treatment was grown on 2 types ...
The impacts of the reading environment on EFL learners’ reading comprehension: A study at Thu Dau Mot University

The impacts of the reading environment on EFL learners’ reading comprehension: A study at Thu Dau Mot University

By Nguyen Thanh Thai
The study is aimed at examining the impacts of the reading environment on ELF learners’ reading comprehension. To achieve this objective, the study was conducted at Thu Dau Mot University (TDMU) with the participation of 129 English majors and 19 teachers of English, who returned questionnaires and were interviewed on ...
Solutions to remedy meaningful environmental aspects according to Iso 14001:2015 standards at General Van Phuc 2 Hospital

Solutions to remedy meaningful environmental aspects according to Iso 14001:2015 standards at General Van Phuc 2 Hospital

By Nguyễn Thị Xuân Hạnh, Trần Cẩm Thi
Van Phuc 2 General Hospital is one of the hospitals that is always concerned about environmental protection in medical checkups and treatment. However to affirm and enhance the prestige is a regional hospital in the region, step by step approaching the hospitals around the world. Therefore, the subject "Proposing solutions ...
Teaching speech acts as a way to develop Students’ communicative competence

Teaching speech acts as a way to develop Students’ communicative competence

By Tran Thanh Du
This study only deals with the range of functions of speech acts that the English language may serve all with a view to raise teachers’ and students’ awareness of the roles that the communicative intentions, the utterance functions and the interactive context play in the acquisition of language in general ...
Evaluate the potential of building Thu Dau Mot smart university model by swot

Evaluate the potential of building Thu Dau Mot smart university model by swot

By Nguyễn Văn Hiệp
Thu Dau Mot University is one of the main public education institutions in the South-Eastern region of Vietnam. The vision of the university is to adopt innovative teaching methodologies to improve education quality and attract more students. Thu Dau Mot University envisions becoming a smart university as one of its ...
Controlling the Position of the DC Motor using PID, and the Sliding Mode Algorithm

Controlling the Position of the DC Motor using PID, and the Sliding Mode Algorithm

By Tan Nguyen Van
With the development of information technology and smart technology to meet the Industrial Revolution 4.0, and to meet life requirements. Automatic control devices require high-precision control quality. Therefore, in this paper, we focus on researching the Sliding mode controller to improve the control quality compared to the PID controller. First, ...
Benchmarking study between Lagamine and Comsol Solvers for Finite Element Thermal Analyses of Directed Energy Deposition Process

Benchmarking study between Lagamine and Comsol Solvers for Finite Element Thermal Analyses of Directed Energy Deposition Process

By Bui Sy Vuong, Tran Van Xuan, Le Van Thao
This work presents a benchmarking study between Lagamine, an in-house developed finite element (FE) code, and COMSOL Multiphysics® (Comsol) commercial software in thermal analyses to investigate their capability in modeling complex manufacturing processes. For this purpose, two case studies, including a NAFEMS benchmark for heat transfer with convection and a ...
Symbolic image in public communication of Thu Dau Mot University

Symbolic image in public communication of Thu Dau Mot University

By Nguyen Dinh Ky
Symbolic images stand for more than simply what appears before the eyes. They represent a deeper meaning behind the image – something. The symbolic images in public communications, and techniques of their application as an instrument of forming desired ideological models within social consciousness, as well as consider principles of ...
Understanding the importance of ISBN codes and creating a 13-Digit ISBN check digit

Understanding the importance of ISBN codes and creating a 13-Digit ISBN check digit

By Đặng Thị Diễm, Lưu Thị Hiệp
This article provides a comprehensive review of ISBN codes, shedding light on their significance and outlining the process of generating a 13-digit ISBN check digit. ISBN codes (International Standard Book Number) play a crucial role in identifying and cataloging books, serving as a unique identifier for each publication.
Language ability and Vietnamese postgraduate students’ experiences in a Western country

Language ability and Vietnamese postgraduate students’ experiences in a Western country

By Ho Trung Hau
International students’ experiences are a major concern for universities and educational researchers. Globally, Vietnam is a top source country for international students but little is known about their experience.
This study explores the everyday experiences of 10 Vietnamese master’s students from a New Zealand university through a series of semi-structured in-depth ...
The role of culture in the social integration of Vietnamese refugees in the United States (1975-2000): An oral history analysis

The role of culture in the social integration of Vietnamese refugees in the United States (1975-2000): An oral history analysis

By Vu Thi Thu Thanh
Culture plays an important role in shaping the perceptions, beliefs, and experiences of refugees as they navigate decisions and actions in a new society. Based on an analysis of 88 oral history interviews conducted by the Vietnamese American Heritage Foundation (VAHF) with Vietnamese refugees in the US after the war, ...
Application of ISO 14001:2015 international standards in the determination of environmental aspects at DNA fresh vermicelli production facility

Application of ISO 14001:2015 international standards in the determination of environmental aspects at DNA fresh vermicelli production facility

By Bui Pham Phuong Thanh, Tran Thi Khanh Hoa, Tran Cam Thi, Nguyen Thi Xuan Hanh
Vietnam's economy is operated to serve more than ninety million people so this is a very vivid picture. The large population brings many advantages to the food production sector in general and the production of fresh noodles in particular. Fresh vermicelli is the raw material for processing many dishes of ...
Research for Oil-Absorbing carpets using hair materials

Research for Oil-Absorbing carpets using hair materials

By Nguyen Thi Mai Thao, Bui Pham Phuong Thanh, Tran Thi Khanh Hoa, Nguyen Thi Xuan Hanh
The issue of marine pollution in general, as well as pollution brought on by oil spills into the sea, in rivers and lakes, or wastewater from factories, businesses, mechanical repair shops, gas stations, universities, and auto repair shops, is one that the world is currently facing, particularly since when it ...
Combined biological and chemical-physical processes for domestic wastewater treatment

Combined biological and chemical-physical processes for domestic wastewater treatment

By Huynh Ngoc Anh Tuan, Nguyen Tri Quang Hung, Cai Thi Quyen, Ho Thanh Ba, Nguyen Minh Ky, Truong Quoc Minh
The present study aims to investigate the possibility of domestic wastewater treatment using biological system combined with chemical-physical processes, including Upflow Sludge Blanket Filtration (USBF) technology and PolyAluminium Chloride (PAC). Experimental results showed that the added PAC content plays an essential role in improving the treatment efficiency and reached National ...
High-order iterative scheme for Kirchhoff-type wave equation with the source containing three unknown values

High-order iterative scheme for Kirchhoff-type wave equation with the source containing three unknown values

By Le Thi Mai Thanh, Pham Nguyen Nhat Khanh
In this paper, a high-order iterative scheme is established in order to get a convergent
sequence at a rate of order N, (N ≥ 2) to a local unique weak solution of a nonlinear
Kirchhoff-type wave equation associated with Robin conditions.
A fractional model of enzymatic competitive substrate inhibition with Ping-Pong mechanism

A fractional model of enzymatic competitive substrate inhibition with Ping-Pong mechanism

By Nguyen Tuan Dat, Mai Quang Vinh
Enzymes are biodegradable catalysts naturally present in living organisms. Enzymes
can accelerate biochemical reactions by reducing the activation energy, and they are
not consumed during reaction processes. Numerous applications of enzymes have been
developed in biotechnology, industry, medicine, pharmaceuticals, food processing, biofuels,
and so on. In this study, we develop a mathematical model describing ...
Identifying the source for Fractional diffusion equations with Random Gaussian white noise

Identifying the source for Fractional diffusion equations with Random Gaussian white noise

By Ngo Ngoc Hung, Tran Thanh Binh, Nguyen Duc Phuong
In this work, we study the problem of finding the source function of the inhomogeneous
diffusion equations with conformable derivative c∂α
t u−Δu = f(x), 0 < α < 1, associate
with random noisy input data. This problem is ill-posed in the sense of Hadamard. In
order to regulate the instablity of the solution, ...
Inverse source problem for Sobolev equation with observed data in Lb spaces

Inverse source problem for Sobolev equation with observed data in Lb spaces

By Le Dinh Long, Danh Hua Quoc Nam, Vo Ngoc Minh, Bui Dai Nghia
In this paper, we are interested in the problem of determining the source function forthe
Sobolev equation with fractional Laplacian. This problem is non-well-posed. We show theerror
estimate between the exact solution and the regularized solution with the observed data in Lb
spaces.
Some applications of logarithms in real life

Some applications of logarithms in real life

By Nguyen Thi Khanh Hoa
In this paper, we restate some applications of logarithms in Richter scale, pH scale and
sound intensity level (Decibel scale).
Asymptotic expansion associated with the Kirchhoff-Carrier- Love equation

Asymptotic expansion associated with the Kirchhoff-Carrier- Love equation

By Vo Thi Tuyet Mai, Le Huu Ky Son, Tran Thi Kim Thoa
In this paper, we consider the Dirichlet boundary problem for a nonlinear wave equation
of Kirchhoff-Carrier-Love type as follow


utt − B
?
∥u(t)∥2 , ∥ux(t)∥2
(uxx + uxxtt)
= f(x, t, u, ux, ut, uxt) +
Xp
i=1
εifi(x, t, u, ux, ut, uxt)
for 0 < x < 1, 0 < t < T,
u(0, t) = u(1, t) ...
On the Robin-Dirchlet problem for a nonlinear wave equation with the term 1 n Xn i=1 u2(i−1 n , t)

On the Robin-Dirchlet problem for a nonlinear wave equation with the term 1 n Xn i=1 u2(i−1 n , t)

By Nguyen Vu Dzung, Tran Trinh Manh Dung
In this paper, we study the Robin-Dirchlet problem (Pn) for a wave equation with the
term
1
n
Xn
i=1
u2( i−1
n , t), n ∈ N. First, for each n ∈ N, under suitable conditions, we prove
the local existence and uniqueness of the weak solution un of (Pn). Next, we prove that
the sequence of solutions ...
High-order iterative scheme to the Robin problem for a nonlinear wave equation with viscoelastic term

High-order iterative scheme to the Robin problem for a nonlinear wave equation with viscoelastic term

By Doan Thi Nhu Quynh, Ho Thai Lyen, Huynh Ai Trieu, Nguyen Thanh Sang
The report deals with the Robin problem for a nonlinear wave equation with viscoelastic
term. Under some suitable conditions, we establish a high-order iterative scheme and
then prove that the scheme converges to the weak solution of the original problem along
with the error estimate. This result extends the result in [9].
The Dirichlet problem for a wave equation of Kirch-hoff- Carrier type with a nonlinear viscoelastic term

The Dirichlet problem for a wave equation of Kirch-hoff- Carrier type with a nonlinear viscoelastic term

By Ly Anh Duong, Le Huu Ky Son, Le Thi Phuong Ngoc
In this paper, we consider the Dirichlet problem for a wave equation of Kirchhoff-
Carrier type with a nonlinear viscoelastic term. It consists of two main parts. In Part
1, we establish existence and uniqueness of a weak solution by applying the Faedo-
Galerkin method and the standard arguments of density corresponding to ...
Global solutions to a time-fractional Cauchy problem

Global solutions to a time-fractional Cauchy problem

By Nguyen Dinh Huy, Nguyen Anh Tuan
In the current work, we study a Cauchy problem for a time-fractional pseudo-parabolic
equation with a globally Lipschitz source term. We prove the unique existence of a mild
solution to the problem, by the common Banach fixed point theorem. This solution is
then verified that exists globally in time by Gr¨onwall’s inequality. Compare ...
Application of fast Fourier transform method to ill-posed problem in image processing

Application of fast Fourier transform method to ill-posed problem in image processing

By Nguyen Huu Can, Nguyen Van Tien, Mai Quang Vinh
In this work, we focus on investigating ill-posed problems (according to the definition
given by Hadamard) in the topic of its application. Specifically, we present some theories
about the properties of the ill-posed problem in image processing. By using discrete
Fourier transform and fast Fourier transform methods, we present several results on
image processing ...
Existence and general decay estimates of the Dirichlet problem for a nonlinear Kirchhoff wave equation in an annular with viscoelastic term

Existence and general decay estimates of the Dirichlet problem for a nonlinear Kirchhoff wave equation in an annular with viscoelastic term

By Le Huu Ky Son, Nguyen Le Thi
This paper is devoted to the study of a Kirchhoff wave equation with a viscoelastic
term in an annular associated with homogeneous Dirichlet conditions. At first, by
applying the Faedo-Galerkin, we prove existence and uniqueness of the solution of the
problem considered. Next, by constructing Lyapunov functional, we establish a sufficient
condition such that ...
On the Neumann-Dirichlet problem for a system of nonlinear viscoelastic equations of Kirchhoff type with Balakrishnan- Taylor term

On the Neumann-Dirichlet problem for a system of nonlinear viscoelastic equations of Kirchhoff type with Balakrishnan- Taylor term

By Bui Duc Nam, Huynh Van Dung, Le Tuan Khai
In this paper, the Neumann-Dirichlet boundary problem for a system of nonlinear viscoelastic
equations of Kirchhoff type with Balakrishnan-Taylor term is considered. At
first, a local existence is established by the linear approximation together with the Faedo-
Galerkin method. Then, by establishing several reasonable conditions and suitable energy
inequalities, the solution of the problem ...
General decay and lifespan of solutions for a system of nonlinear pseudoparabolic equations with viscoelastic term

General decay and lifespan of solutions for a system of nonlinear pseudoparabolic equations with viscoelastic term

By Khong Thi Thao Uyen, Nguyen Anh Triet, Le Thi Phuong Ngoc
In this paper, we consider the Robin-Dirichlet problem for a system of nonlinear pseudoparabolic
equations with viscoelastic term. By the Faedo-Galerkin method, we first prove
the existence and uniqueness of solution for the problem. Next, we give a sufficient condition
to get the global existence and decay of the weak solution. Finally, by ...
Cultural exchanges and Zen Buddhism in Sino poetries of Vietnamese envoys to China from the late 18th to early 19th century

Cultural exchanges and Zen Buddhism in Sino poetries of Vietnamese envoys to China from the late 18th to early 19th century

By Lê Sỹ Đồng
Abstract

Cultural relations between Vietnam and China, of course, need no further assertions. But this process of cultural relations, then requires further studies to see the diversity of this cultural relationship. We, in this report, present the cultural relationship between Vietnam and China through poems written on the topic of Zen ...
Application of TOPSIS and AHP methods to select a wastewater treatment technology for Poong In Vina Factory

Application of TOPSIS and AHP methods to select a wastewater treatment technology for Poong In Vina Factory

By Dang Tuan Hai, Nguyen Hien Than, Nguyen Huynh Anh Tuyet
Selecting wastewater treatment technology is not an easy matter. In this study, TOPSIS and AHP methods are used to support decision-making in choosing a wastewater treatment alternative for Poong In Vina factory. A total of 9 criteria belonging to 3 groups of economic, social - technical and environmental issues were ...