Thu Dau Mot University Journal of Science


Natural Science

Applying first principles to study the structural, electronic, and magnetic properties of Pr adsorbed ASiNRs

Applying first principles to study the structural, electronic, and magnetic properties of Pr adsorbed ASiNRs

By Thanh Tung Nguyen, Hoang Van Ngoc, Huynh Thi Phuong Thuy, Duy Khanh Nguyen, Vo Van On
Applying first-principles calculations, the investigation of the geometrical and electronic properties of Pr adsorption armchair silicene nanoribbons structure has been established. The results show that the bandgap doped Pr has been changed, which is the case for chemical adsorption on the surface of ASiNRs; this material became metallic with the ...
Prediction of COVID-19 evolution in Binh Duong province using SIR epidemiological model

Prediction of COVID-19 evolution in Binh Duong province using SIR epidemiological model

By Pham Bao Quoc, Vo Van On, Nguyen Duy Khanh, Nguyen Thi Lien Thuong, Huynh Thi Phuong Thuy, Hoang Van Ngoc, Nguyen Thanh Tung, Vo Hoang An
With the fast growth of the COVID-19 pandemic, in-silico studies based on the susceptible-infected-removed (SIR) epidemiological model are very critical to provide reliable predictions of the COVID-19 evolution that can effectively support governments to issue the right measures to prevent and control the pandemic. In this study, the evolution of ...
Naringenin: a potential bioactive compound and pathways of biosynthesis – a review

Naringenin: a potential bioactive compound and pathways of biosynthesis – a review

By Nguyen Anh Dung, Nguyen Thanh Thuan
Naringenin is a member of the flavonoid family. This natural compound represents a large proportion of secondary metabolites produced by higher plants and is a rich part of the human diet. Naringenin also has been used in the pharmaceutical and medical fields as an effective drug for anti-oxidative, anti-cancer, anti-obesity, ...
Assessment of environmental risk from polluted organic wastewater in Long Thanh Industrial Park with the Nemerow index and Principal component Analysis

Assessment of environmental risk from polluted organic wastewater in Long Thanh Industrial Park with the Nemerow index and Principal component Analysis

By Nguyen Hien Than
This study aims to assess environmental risk using the improved Nemerow index and the principal component analysis (PCA) method in Long Thanh's Industrial Park in Dong Nai Province. The study was implemented in five industrial parks of Long Thanh District in 2019. The result showed that Loc An - Binh ...
DIVERSITY OF ORCHIDACEAE IN SOUTH EAST VIET NAM

DIVERSITY OF ORCHIDACEAE IN SOUTH EAST VIET NAM

By Nguyen Minh Ty
Result of study on the diversity of orchids in Southern East Viet Nam in 2019 and 2020 have identified 173 orchids species belong to 50 diffrent genus, accounting for 14.41% of the total number of orchid species available in Viet Nam (1.200 species). Among them, all species were used as ...
Design and optimization of Zn (Ii) adsorption conditions from aqueous solutions by Fe/Mn-Diatomite material

Design and optimization of Zn (Ii) adsorption conditions from aqueous solutions by Fe/Mn-Diatomite material

By Le Thi Pho
Environmental issues such as the wastewater have influenced each aspect of our lives. For human and environmental health protection, it is necessary to remove excess zinc in industrial wastewaters before discharging them to environment. Modified diatomite displayed larger surface area and pore volumes in comparison with untreated natural diatomite, which ...
Reciprocal effect of variables on the removal of Cu(II) by Fe/Mn-diatomite material

Reciprocal effect of variables on the removal of Cu(II) by Fe/Mn-diatomite material

By Le Thi Pho
Heavy metal pollution is a major problems in the environment. The impact of toxic metal ions can be minimized by different technologies, viz., chemical precipitation, membrane filtration, oxidation, reverse osmosis, flotation and adsorption. But among them, adsorption was found to be very efficient and common due to the low ...
Species diversity and distribution of wild bees (Hymenoptera: Apoidea) in Binh Chanh District, Ho Chi Minh City

Species diversity and distribution of wild bees (Hymenoptera: Apoidea) in Binh Chanh District, Ho Chi Minh City

By Le Van Tho, Dang Van Son
As the most significant pollinators of wild plants, bees play an important role in sustaining the natural ecosystems. In this study, we conducted surveys of bee fauna of three different habitat types during dry and rainy seasons of 2020 in Binh Chanh District, Ho Chi Minh City. A total ...
Diversity of Orchidaceae from South East Viet Nam

Diversity of Orchidaceae from South East Viet Nam

By Nguyen Minh Ty, Nguyen Vinh Hien
A study on the diversity of Orchids from Southern East Viet Nam was carried out in 2019 and 2020 and identified 173 species, 50 genera, accounting for 1.28% of the total number of orchid species available in Viet Nam (897 species). Among them, all species were used as ornamental plants; ...
Effects of milling combined with extremely low-liquid ammonia (ELLA) pretreatment to enhance enzymatic hydrolysis of corn stover

Effects of milling combined with extremely low-liquid ammonia (ELLA) pretreatment to enhance enzymatic hydrolysis of corn stover

By Trương Nguyễn Phương Vi
Lignocellulosic biomass is one of the largest carbohydrate sources and has huge potential for biofuels production. However, the problem with lignocellulosic feedstock is that it has useful sugars locked in by lignin, hemicellulose, and cellulose. Some kind of pretreatment; therefore is needed to make carbohydrate accessible which later can be ...
A new class of bilevel weak vector variational inequality problems

A new class of bilevel weak vector variational inequality problems

By Nguyen Van Hung, Vo Viet Tri
In this paper, we first introduce a new class of bilevel weak vector variational
inequality problems in locally convex Hausdorff topological vector spaces.
Then, using the Kakutani-Fan-Glicksberg fixed-point theorem, we establish
some existence conditions of the solution for this problem.
An review on bioethanol production using lignocellulosic biomass

An review on bioethanol production using lignocellulosic biomass

By Trương Nguyễn Phương Vi
Declining supplies of fossil fuels, increasing population, global industrialization and demand for transportation fuels has triggered an increase in the demand for renewable energy sources. To address such problems most of the green research in the recent years has focused on the development of bioethanol (23 MJ/L) as a substitute ...