Bài viết nghiên cứu số về sự hình thành lớp vỏ bọc điện thế gần bề mặt kim loại sử dụng mô phỏng Particle-In-Cell (PIC). Kết quả phù hợp lý thuyết.

In this study, a composite material between MnFe2O4 and activated carbon from coffee husks (MFO/AC) was synthesized using co-precipitate and hydrothermal methods to remove ammonium from aqueous solutions. The characteristics of MFO/AC were characterized and evaluated by scanning electron microscopy (SEM) and Fourier transform infrared spectra (FTIR).

Composite materials are widely used in aesthetic dental restorations due to their advantages, including minimal invasive preparation, high mechanical strength, adhesive durability, biocompatibility, time and cost-effectiveness. This study investigates the effect of enamel-shade composite thickness on the final color values of restorations using a two-layer technique to replace enamel and dentine.

This study, conducted at Hanoi Open University, identifies six key determinants influencing student satisfaction with undergraduate training activities: training curriculum, training organization, faculty expertise, learning materials, school facilities, and support services.

Lecture on Strength of materials II gồm có những nội dung chính sau: Chương 8: Thanh chịu lực phức tạp, Chương 9: Ổn định thanh chịu nén, Chương 10: Các phương pháp năng lượng, Chương 11: Tính hệ thanh siêu tĩnh, Chương 12: Tải trọng động. Mời các bạn cùng tham khảo!

This study investigates the compressive performance and mechanical behavior of concrete filled steel tubular (CFST) columns constructed with high strength materials under various compression loading scenarios.

In the study, the total nitrogen content of natural rubber was determined to evaluate the effectiveness of deproteinization on the synthesis of chemically modified rubber materials. The remaining protein content in the obtained deproteinized natural rubber (DPNR) was analyzed as nitrogen content using the Kjeldahl method.

The mechanical properties of compositionally graded nanocrystalline materials (CGNMs) are studied via molecular dynamics simulation. This article uses molecular dynamics (MD) simulations to investigate the tensile mechanical properties of CuNi CGNMs with varying grain sizes.

This paper is dedicated to the study of geometrically nonlinear behaviour of variable thickness functionallygraded plates subjected to uniaxial compressive forces. The plate’s geometry in this study could have either uniform thickness or symmetrical parabolic-form thickness.

In this work, we employ Moiré lattices generated in a high-order nonlinear material to investigate the existence of topological solitons under diverse geometries, which are controlled by the twisting angle of sublattices. The formation of solitons in both commensurate and incommensurate Moiré lattice configurations allows us to explore deeper into the impact of geometric transitions on soliton stability and localization.

This article explores practical research on the application of SEC in mathematics education both globally and in Vietnam. It examines the perspectives and characteristics of SEC in mathematics education, as well as SEC integrated with AI.

The cement industry plays a crucial role in providing construction materials, directly contributing to infrastructure development and economic growth. Being interned at a cement manufacturing factory is an invaluable experience for engineering students in learning automation solutions in industry. During the internship at Hamaco Co., Ltd., a plant/model for simulating some steps in a Cement production process was built.

The first principle calculation was employed to investigate the formation energies and structural, electronic, and magnetic properties of intrinsic and Ni-doped sodium bismuth titanate Bi0.5Na0.5TiO3(BNT). The obtained formation energies indicate that Ni atoms prefer to dope into Bi-sites in the lattice of BNT while the calculated band structure shows that the doping leads to the emergence of new midgap energy states in the bandgaps, reducing the bandgap value of doped materials.

This study evaluates the three-dimensional (3D) printing materials used in Fused Deposition Modeling (FDM) printing technology. 3D printing technology has been developing strongly, becoming an effective support tool in production and research.

This study aimed to extract cellulose fibers from coffee grounds using a non-toxic and cost-efficient alkaline hydrogen peroxide extraction method. Scanning electron microscopy (SEM) analysis results indicated that, after being dried, the cellulose fibers tended to aggregate into bundles, with no individual fibers observed.

This study examined the physical and microbial properties of the breadfruit flour over a 16-week storage period at 25°C. Four packaging materials, including high- and low- density polyethylene (HDPE and LDPE), polyamide (PA), and polyamide/aluminum (PAAl), were used.

Achieving ecologically sustainable development requires utilizing the added value of waste sources to synthesize functional materials. Currently, Vietnam is a country with developed agriculture, and agricultural by-products are increasing over the years.

Steel pipe piles are widely used in coastal infrastructure due to their high strength and durability. This study investigated the accelerated corrosion effects on steel pipe pile materials in a simulated Nha Trang seawater environment, representing typical coastal conditions in Vietnam.

Recent research is focusing on the development of bio-packaging materials by mixing different polymers to enhance the bonding strength within the matrix and combining favorable properties of the constituent materials. This work developed a bio-packaging material by combining chitosan, gelatin, and glycerol.