Natural Science

Abstract
Bats are ecologically valuable and may spur disease transmission; thus, this study aimed to investigate prevalence and identify common ectoparasites in bats in Gulumbe and Masama District in Birnin Kebbi and Danko Wasagu Local Government Areas of Kebbi State. A total of 300 bats were collected. Ectoparasites were investigated with ...

Silicene nanoribbons (SiNRs), as one-dimensional derivatives of silicene, exhibit highly anisotropic charge transport and hold significant promise for future nanoelectronics applications. In this work, we systematically investigate the structural stability and electronic properties of hydrogen-passivated SiNRs doped with aluminum using first-principles density functional theory calculations performed with the VASP package. ...

This study applies a first-order Markov chain to analyze and model the academic progression of 317 students from the Faculty of Education at Thu Dau Mot University, utilizing their semester Grade Point Averages (GPA) as the core data. Students' GPAs were methodologically classified into four distinct academic performance states: Weak ...

This paper develops a systematic framework for polynomials over division algebras, focusing on degree, the Euclidean algorithm, left and right divisibility, greatest common divisors, and minimal polynomials. The relations among these notions are clarified, and conditions ensuring agreement between the left and right constructions are identified. The results extend key ...

This study documents the ichthyofaunal composition of the Ba River basin in Central Vietnam, recording a total of 182 species across 55 families and 15 orders. Perciformes is the most diverse order (20 families, 36.36%), while Cyprinidae is the most diverse family (24 genera, Northern element accounts for 35.84% of ...

Abstract
This study examines how ChatGPT influences high school students’ cognitive and behavioral engagement in Physics learning, drawing on survey data from 251 students at Vo Minh Duc High School in Ho Chi Minh City. Although generative AI is increasingly adopted in education, little is known about how Vietnamese students use ...

In this paper, we consider a boundary value problem involving the Hadamard fractional derivative. We establish a Lyapunov-type inequality for the problem by constructing the green function and analyzing its properties. Next, we employ a fixed-point theorem to obtain the existence and uniqueness of the solution to the problem. The ...

MnO2 has the advantage of being environmentally friendly and abundant in soil, but its ability to activate persulfate is poor. This study combines MnO2 with CuO into a mixed metal oxide through a one-step reaction to increase the persulfate activation efficiency of the obtained product. These mixed oxides were synthesized ...

The structural and electronic properties of sulfur-doped armchair stanene nanoribbons (ASnNRs) have been investigated using Density Functional Theory (DFT). The diverse structural and electronic characteristics induced by the substitution of sulfur atoms were comprehensively analyzed through first-principles calculations, including formation energy, optimized structural parameters, projected density of states (PDOS), and ...

In this study, molecular dynamics simulations were employed to investigate the influence of pressure on the structural properties of silver (Ag) at 300K. The results reveal that an increase in pressure leads to a reduction in nearest-neighbor distance, a promotion of local ordering, and a transition from a largely disordered ...

Conductivity is a crucial and widely recognized concept in material science, particularly significant in the study of low-dimensional systems. This research extends the analysis of the conductivity tensor within a quantum well with infinite potential, focusing on electron-acoustic phonon scattering. The system is subjected to two external fields: an electromagnetic ...

The excellent flexibility of graphene materials that allows them to adjust to the curvature of the substrate surface, chemical surface inertness, and impermeability have attracted considerable attention in the past decade as a blending material and an additive in anti-corrosion coatings. In this paper, we present the role of graphene ...