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• Synthesis of Ag/CuO/rGO hybrid structure towards the applications in visible light photodetectors
  30/12/2024 by Duc Anh Ngo
  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 […]
• Detecting Mental Health Issues in Students Using Limited ECG Data from Portable Devices.
  30/12/2024 by Nhat Tan Le
  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 […]
• Surface features of graft-type polymer electrolyte membranes using tapping mode atomic force microscopy analysis
  30/12/2024 by Nguyen Nhat Kim Ngan
  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 […]
• Phenolic compounds from the bark of Aglaia lawii and their cytotoxic activity against HepG2
  30/12/2024 by Quan Hoang Pham
  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 […]
• Evaluation of Micro-Encapsulated Roselle Extract as a Food Colorant in Red Nata de Coco Dessert Model System
  30/12/2024 by My-Duyen Ngo
  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 […]
• Contamination status of surface water from urban rivers and lakes in Hanoi, Vietnam: Pollution parameters and concentrations of selected elements
  30/12/2024 by Anh Quoc Hoang
  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 […]
• Spray-dried Encapsulation of Roselle (Hibiscus Sabdariffa) and Evaluation of Their Potential as Rich-antioxidant Compound
  30/12/2024 by Vo Minh Quan
  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 […]
• Fluorine containing chalcones as anticancer agents: Solvent-free synthesis and cytotoxicity against HepG2 cancer cells
  30/12/2024 by Phuong Ho
  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 Free-standing Hexagonal Boron Nitride
  30/12/2024 by Dan Lin Lieu
  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 […]
• Applying zooplanktonic biological indices for assessment of water quality in the watersheds of Ray river, Baria-Vung Tau province
  30/12/2024 by Tran Ngoc Diem My
  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 […]