Bài báo mới

Introduction: 2D reduced graphene oxide (rGO) has become a key material in optoelectronic devices due to its outstanding electrical properties and stability. However, the application potential of rGO in such devices is still limited due to its low light absorption ability (especially in the visible region). Hence, this study aims to overcome this problem by […]

Introduction: Mental health issues are a growing concern among university students, significantly affecting their academic performance and quality of life. Recognizing stress in students under academic pressure is crucial for improving their well-being. This study aims to identify stress patterns through heart activity, which is closely correlated with mental health issues. Methods: An experiment was […]

Introduction: Polymer electrolyte membrane fuel cell (PEMFC) is a promising renewable energy technology, which is increasing commercial use in transportation, stationaries, and portable devices. In the PEMFC, the surface nature of PEMs plays a key role in interfacial degradation of membrane-electrolyte assembly and proton conductance and thus, highly impacting on the performance and stability of […]

Introduction: Aglaia lawii is a large tree belonging to the Meliaceae family. In traditional medicine, the stem bark is used as a vermicide while the leaves are used for the treatment of headache. Studies on the chemical constituents of this species in Vietnam and its biological activity, especially its ability to treat liver cancer, are […]

Incorporating natural extracts into food products offers significant health benefits and promotes sustainable production methods. This study evaluates the incorporation of microencapsulated roselle (Hibiscus sabdariffa) extract into nata de coco, a traditional Vietnamese dessert. Anthocyanins in roselle, a subgroup of polyphenols, are notable for their vibrant colors and health benefits. By transforming extract solutions into […]

Introduction: Surface water contamination is a concern in urban areas of emerging and developing countries. However, comprehensive and updated studies on the pollution status of urban rivers and lakes in Vietnam are still relatively scarce. Methods: In this study, surface water samples were collected from 5 rivers and 5 lakes in Hanoi, the capital city […]

There is a growing demand using rich-antioxidant compounds from plant extract to develop functional food products or biomedical products. In this work, we studied the impact of producing encapsulated roselle extracts with 1% w/v microencapsulated carrier as a powder rich in antioxidant properties. In particular, the roselle extract was subjected to spray drying using an […]

Introduction: Chalcone analogs are commonly synthesized by the base-catalyzed Claisen-Schmidt condensation reaction of acetophenones and aromatic benzaldehydes. The shortcomings of the traditional protocols are side-products. Grinding and microwave-assisted methods under solvent-free conditions are green approaches for the preparation of chalcones. Herein, we focused on the synthesis of chalcone-based analogs bearing –F/-OCH3/-OH groups on both A […]

The atomic mechanism of the melting process of the free-standing h-BN is studied using Molecular dynamics simulation. The critical value of the Lindemann criterion for the free-standing h-BN is defined at 0.0326 which is used to classify solid-like and liquid-like atoms. The influence of the edge types on the melting process is observed based on […]

The Ray River is an important river system in Ba Ria-Vung Tau Province, Vietnam, supplying water for domestic, agricultural, and industrial purposes, thereby facilitating the province's economic development. The research was executed in 2024 across 9 watersheds, comprising 5 sites on the Ray River and 4 sites on the Ray River reservoir, throughout both the […]

Introduction: Among metal nanoparticles (MNPs), silver nanoparticles (AgNPs) have partical attention due to their excellent electrical and optical properties. Notably, colorimetric sensors incorporating metal nanoparticles have garnered significant attention from scientists in biochemical analysis, offering a simple solution. Here, we report the use of AgNPs applying hydrogen peroxide (H2O2) sensor. Methods: The AgNPs were synthesized […]