Danh mục: Bài báo khoa học

Coupled Evolution of Local Stress and Strain-Induced Crystallization Near a Circular Defect in Stretched Natural Rubber
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Coupled Evolution of Local Stress and Strain-Induced Crystallization Near a Circular Defect in Stretched Natural Rubber

Abstract We investigate the coupled evolution of heterogeneous strain, crystallinity, and stress fields in natural rubber (NR) sheets containing a circular hole during uniaxial stretching, with a focus on how strain-induced crystallization (SIC) influences local stress concentration at structural discontinuities. By high-resolution digital image correlation, an empirical strain-crystallinity relationship and a hyperelasticity analysis firmly grounded...

Hydrate technology for water desalination in the Mekong Delta, Viet Nam
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Hydrate technology for water desalination in the Mekong Delta, Viet Nam

Abstract Freshwater scarcity is a critical issue in Vietnam, particularly in the Mekong Delta, a densely populated region with an agriculture-based economy. This scarcity is largely driven by saltwater intrusion during the dry season, severely affecting both agriculture and the local economy. In response, advanced desalination technologies have been proposed. In this study, we investigated...

Simultaneous treatment and enrichment of total phosphorus from livestock sewage using hydrate technology
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Simultaneous treatment and enrichment of total phosphorus from livestock sewage using hydrate technology

Abstract The presence of phosphorus in livestock sewage is a key factor that causes eutrophication and the degradation of ecological water quality. Cyclopentane (CP) hydrate-based water treatment technique was utilized for the efficient total removal of phosphorus in effluents. This study assesses the treatment effectiveness and enrichment potential of hydrate technology when applied to real-world samples, specifically livestock wastewater....

A gas hydrate process for high-salinity water and wastewater purification
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A gas hydrate process for high-salinity water and wastewater purification

Abstract This study investigates the effectiveness of a hydrate-based water purification process on high-salinity and wastewater samples. Testing involved a 4-L-scale novel apparatus using HFC134a as a guest molecule during a continuous hydrate formation–pelletization–dissolution process. Each stage of the succeeded in removing 80–85% of individual dissolved contaminants from highly polluted water. This is the first study to...

Simultaneous removal of multi-nuclide (Sr2+, Co2+, Cs+, and I-) from aquatic environments using a hydrate-based water purification process
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Simultaneous removal of multi-nuclide (Sr2+, Co2+, Cs+, and I-) from aquatic environments using a hydrate-based water purification process

Graphical Abstract Abstract This study investigates the removal characteristics of a hydrate-based water purification process used to remove the major radionuclides monitored in nuclear accident areas. The effect of the coexistence of salt ions on the removal of radioactive materials is also evaluated. Previous studies have found existing processes such as ion exchange and membrane separation to be reliable methods for radionuclide removal from contaminated water....

Structure and electrochemical properties of surface-activated C/SiO2 composite derived from rice husks as a high-performance anode for sodium-ion batteries
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Structure and electrochemical properties of surface-activated C/SiO2 composite derived from rice husks as a high-performance anode for sodium-ion batteries

Summary Sodium-ion batteries (SIB) have been becoming a promising candidate for future energy storage and conversion owing to the abundant sodium sources and availability of their featured materials for solving the planet’s sustainability issues, which is recently a global overriding concern. The development of low-cost, sustainable, compatible, and stable anode materials should be parallel driven...

In vitro assessment of bovine-derived hydroxyapatite for bone xenografts
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In vitro assessment of bovine-derived hydroxyapatite for bone xenografts

Abstract Bovine bone-derived hydroxyapatite (BBHAp) has been reported to be a biocompatible and efficient bone graft substitute. In this study, hydroxyapatite (HAp) was produced by combining the cleaning process with alkali and thermal treatment of bovine bone. The calcination temperature was 700°C. The functionality of the BBHAp scaffold as a bone graft substitute was determined...

Viscoelastic strain recovery governs crack-tip opening dynamics of elastomers
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Viscoelastic strain recovery governs crack-tip opening dynamics of elastomers

Graphical abstract Abstract This study explores the crack opening dynamics in Mode-I fracture of pre-stretched viscoelastic elastomer sheets under varying strain energy release rate (Γ). The degree of viscoelasticity was widely tuned by altering the mixing ratio of telechelic precursor chains and a tri-functional cross-linker, producing elastomers with different amounts of relaxation components such as...

Selector-Free 16 × 16 CrOX/TiO2-Based Memristor Array for Synaptic Dynamics and LTP/ LTD Emulation: Experimental–Computational Correlation
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Selector-Free 16 × 16 CrOX/TiO2-Based Memristor Array for Synaptic Dynamics and LTP/ LTD Emulation: Experimental–Computational Correlation

Abstract This study presents a combined experimental–theoretical approach to understanding and optimizing CrOx-based self-rectifying memristor (SRM) for neuromorphic computing and provides a promising platform for selector-free, low-power crossbar arrays. By using a stencil-assisted DC sputtering technique, a 16 × 16 crossbar array is fabricated and exhibits reliable analog resistive switching, minimal sneak current (≈150 nA), and...

Mott–Schottky Au/Co3O4 Decorated on a Carbon Cloth Substrate as an Efficiently Bifunctional Electrocatalyst for Hydrogen and Oxygen Evolution Reactions
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Mott–Schottky Au/Co3O4 Decorated on a Carbon Cloth Substrate as an Efficiently Bifunctional Electrocatalyst for Hydrogen and Oxygen Evolution Reactions

Abstract Catalytic materials for water splitting must possess pivotal characteristics such as cost-effectiveness, robust stability, and high performance toward the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). In this study, we utilized a designed Mott–Schottky material, Au/Co3O4, developed in conjunction with a low-cost and robust material: carbon cloth. The findings revealed that 30...