High-efficiency microfluidic chip integrated with micro-patterned planar spiral sensors for magnetic nanoparticle detection.

Magnetic nanoparticles have garnered significant attention in the biomedical field due to their remarkable biocompatibility and diverse applications. However, existing methodologies for quantifying magnetic-labeled samples face limitations, particularly regarding the stringent requirements for magnetic sensors and the complexities associated with integrating these systems into microfluidic platforms. This study introduces an innovative planar magnetoimpedance sensor for magnetic nanoparticle detection, designed with a micropatterned spiral configuration and integrated into a microfluidic channel.

A novel approach for the fabrication of SERS substrates based on 3D urchin-like TiO@Gr-AuNPs architecture.

3D urchin-like titanium dioxide@graphene-gold nanoparticles (UT@Gr-AuNPs) architectures with a core@shell structure of UT@Gr were successfully synthesized on silicon substrates thermal chemical vapor deposition (CVD) technique using sodium deoxycholate surfactant (SDC) as a carbon source, followed by depositing AuNPs onto the surface of UT@Gr a cold plasma (CP) process. The as-prepared samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman, X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), and ultraviolet-visible (UV-vis) spectroscopy. Thanks to the hot spots created by the AuNPs onto the surface of UT@Gr, the UT@Gr-AuNPs SERS substrates show significantly enhanced SERS sensitivity to detect hazardous pollutants and pesticide residue substances, , rhodamine 6G (R6G) and malathion with a low detection limit (LOD) of about 5.

A novel plant-derived recombinant COBRA infectious bronchitis virus spike protein can elicit a strong immune response in chickens.

Infectious bronchitis virus (IBV) causes an acute respiratory disease in chickens of all ages, and is an economic burden on the global poultry industry. In severe cases, this virus can spread from the respiratory tract to urinary and reproductive organs, leading to kidney damage, poor egg quality, and high mortality rate of chickens. Among IBV glycoproteins, spike (S) is the major determinant of viral attachment to host receptors and induction of neutralizing antibodies.

Eriolaenabacgiangensis (Malvaceae), a new species from Vietnam.

The new species from Vietnam is described and illustrated. The identified key was constructed to indicate the differences amongst three allied species of . was compared with similar species, and .

Recent progress in the synthesis of nanostructured TiCT MXene for energy storage and wastewater treatment: a review.

MXene-based functional 2D materials hold significant potential for addressing global challenges related to energy and water crises. Since their discovery in 2011, TiCT MXenes have demonstrated promising applications due to their unique physicochemical properties and distinctive morphology. Recent advancements have explored innovative strategies to enhance TiCT into multifunctional materials, enabling applications in gas sensing, electromagnetic interference shielding, supercapacitors, batteries, water purification, and membrane technologies.

Isolation and characterization of a novel lytic bacteriophage Pv27 with biocontrol potential against infections in shrimp.

Background: is a major disease-causing species of that is pathogenic to both farmed shrimp and humans. With the increasing spread of antibiotic-resistant strains, bacteriophages (or phages) are considered potential agents for biocontrol as an alternative to antibiotics. In this study, a bacteriophage capable of lysing , named Pv27, was isolated, characterized, and evaluated for its potential to control infections as a natural therapy.

A comprehensive review on the adsorption of dyes onto activated carbons derived from harmful invasive plants.

The proliferation of invasive plant species such as Ailanthus altissima, Reynoutria japonica, and Alternanthera philoxeroides pose a significant ecological and economic challenge, including adverse impacts on native biodiversity, agriculture, and infrastructure. The production of activated carbons from these invasive plants offers a sustainable approach to addressing environmental pollution in the context of wastewater treatment. Activated carbons are renowned for high adsorbability and porous structure, hence, they may be highly effective in removing contaminants including dyes.

New provincial records of the genus (Amphibia, Anura, Dicroglossidae) from South Central, Vietnam.

Background: is one of the poorly-known genera of amphibians in Vietnam. In the herpetofaunal list of Vietnam in 2009, only five species of the genus were recorded from the country. Recently, four new species (, , and ) and three new country records (, and ) were reported from Vietnam.

Cytotoxicity evaluation of Salisb. rhizome extract via apoptosis and reactive oxygen species generation in human gastric cancer cells.

Unlabelled: Salisb. () has been reported to have anti-proliferative activities against different types of cancer, including colon, lung, skin, and prostate cancer. In this study, we aimed to determine whether rhizome extract (CAE) exhibited cytotoxic and apoptotic effects against gastric cancer cells.

New record and diet of the endangered Mau Son Spiny Frog ( Dubois and Ohler, 2009) in Vietnam.

Background: The Mau Son Spiny Frog was originally described from Mau Son Mountain, Lang Son Province in 2009 and subsequently recorded in Bac Giang and Quang Ninh Provinces of Vietnam. The species was listed as Vulnerable in the IUCN Red List 2017 and as Endangered in the Vietnam Red Data Book 2024. However, knowledge about diet ecology of the species is virtually lacking.

Phylogenetic and sequence analysis of the co-circulating lineages in the canine distemper virus complexity from Northern Vietnam (2017-2023).

Morbillivirus canis, commonly known as Canine distemper virus (CDV), causes Canine distemper (CD) in carnivore species across the world and spreads via cross-species transmission between domestic and wildlife canids, non-canid carnivores, and omnivores. We report on the Asia-4 lineage of CDV previously documented in Thailand and China, which has emerged for the first time in northern Vietnam since 2017. The phylogenetic analysis of 121 complete nucleotide CDS (coding sequence) of the hemagglutinin (H) gene, including 20 from this study, and 101 reference strains from all 19 lineages of CDVs revealed that the Asia-4 lineage co-circulated with the Asia-1 in Vietnam.

First confirmation of the chicken eyeworm, Oxyspirura mansoni, as a causative pathogen of human cutaneous larva migrans by morphological and molecular evidence.

Human larva migrans is a zoonotic disease caused by larvae of various nematode species, with all previously confirmed pathogens originating from mammalian reservoirs. In 2020, a case series in Vietnam reported instances of cutaneous larva migrans caused by avian eyeworm larvae of the Oxyspirura genus. This nematode genus, belonging to the Thelaziidae family, includes 84 species that mainly parasitize the eyes of various bird species.

Abundance, distribution, and seasonal variation of marine litter on the beaches of central Vietnam.

This study investigates the abundance, distribution, and seasonal variation of marine litter across beaches in central Vietnam, using the Clean Coast Index (CCI) and Hazardous Index (HI) to assess pollution levels. A total of 16,118 litter items were recorded across 21 sampling sites, with plastics overwhelmingly dominant (96.48 %), followed by rubber (2.

New Record of Potential Tyrosinase Inhibitory, Antioxidant, and Photoprotective Effects of Vietnamese Castanea mollissima Extracts.

In this study, the potential anti-tyrosinase, antioxidant, and ultraviolet (UV) absorption efficiency of the extracts of different parts of Castanea mollissima were evaluated. The leaf extract exhibited the most potential antioxidant effect with 2,2-diphenyl-1-picrylhydrazyl and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging abilities of >90%. C.

Tripeptides inhibit dual targets AChE and BACE-1: a computational study.

Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by cognitive decline and memory loss, with amyloid-beta (Aβ) plaques and acetylcholine deficits being central pathological features. Inhibition of dual targets including acetylcholinesterase (AChE) and beta-site amyloid precursor protein cleaving enzyme 1 (BACE-1) represents a promising strategy to address cholinergic deficits and amyloid pathology. In this study, we used computational approaches to evaluate 8000 tripeptides as potential dual inhibitors of AChE and BACE-1.

Synthesis of FeO@Au Core-Shell Nanoparticles with Varying Thicknesses for Application in Computed Tomography Imaging.

To enhance the resolution of medical images, core-shell FeO@Au hybrid nanoparticles (HNPs) with gold shells of varying thicknesses are developed. By optimizing synthesis conditions, nanoparticles with uniform size, clear core-shell structure, and high stability in biological environments are obtained. In vitro testing data shows that HNPs with a 5-7 nm-thick gold shell exhibits a high X-ray attenuation.

Chemical Composition and Pesticidal Activities Against Three Vector Mosquito Species of Zanthoxylum armatum DC. Essential Oils.

In this study, we investigated the extraction yield and chemical composition of essential oils from the fruit, leaf, and twig of Zanthoxylum armatum from Vietnam. The fruit essential oil (FEO) with high content, representing a chemotype, was evaluated for pesticidal activities against three mosquito species Aedes aegypti, Aedes albopictus, and Culex quinquefasciatus, according to the WHO guidelines with modifications. The results showed that the major constituents of FEO were limonene (30.

Megastigmanes isolated from leaves and their immunomodulatory effect on IL-1β and IL-10 production in RAW264.7 macrophages.

With the aim of isolating immunomodulatory compounds from the -butanol extract of leaves, nine megastigmane compounds were identified. Among these, the structure of the new compound 1, namely, "boehmegaside A", was established using NMR and HR-ESI-MS, and its absolute configurations were established through ECD calculations and DP4+ analysis using DFT-NMR chemical shift calculations. Furthermore, eight of these compounds were discovered for the first time in the genus, marking this the first report on megastigmane compounds isolated from this genus.

Effect of different solvents on bioactive phenolics and antioxidant, antimicrobial, and -glucosidase inhibition activities of Gaertn. flower extracts.

Gaertn. is a well-known vegetable and medicinal plant. This study assessed solvents' effect on phytochemical contents and bioactivities of flower extracts.

Photocatalytic oxidation of antibiotic residue and organic dye pollutant using noble metal-doped ZnO: Reducing environmental and health risks.

Water pollution associated with antibiotic residues and colored organic pollutants leads to various potential risks to human health and the environment. This work develops an economical method that is suitable for removing both antibiotic residues and colored organic pollutants from water. The oxidation process based on a noble metal (Ag)-doped zinc oxide photocatalyst (Ag-ZnO) was selected as a potential strategy for investigation.

Solvation enhances folding cooperativity and the topology dependence of folding rates in a lattice protein model.

The aqueous solvent profoundly influences protein folding, yet its effects are relatively poorly understood. In this study, we investigate the impact of solvation on the folding of lattice proteins by using Monte Carlo simulations. The proteins are modeled as self-avoiding 27-mer chains on a cubic lattice, with compact native states and structure-based Gō potentials.

Efficient photocatalytic degradation of methylene blue using 3D urchin-like TiO@rGO-hBN architecture.

3D urchin-like TiO@rGO-hBN architectures were produced by a hydrothermal method, followed by a cold plasma jet process. The morphology, crystal structure, composition and photocatalytic performance of the 3D urchin-like TiO@rGO-hBN architectures towards methylene blue (MB) were evaluated using SEM, Raman, XRD, EDS and UV-vis-NIR spectrophotometry. The obtained results indicated that under the same conditions, the MB degradation efficiencies were ∼72%, ∼81%, ∼87%, and ∼98% for 3D urchin-like TiO, 3D urchin-like TiO@rGO, 3D urchin-like TiO@hBN, and 3D urchin-like TiO@rGO-hBN, respectively, within 70 min under ultraviolet (UV) light irradiation with a wavelength of 365 nm.

Palladium nanoparticles from β-cyclodextrin and cellulose methyl carboxylate as an effective catalyst for Sonogashira coupling and the reduction of alkynes.

This research presents an effective approach for synthesizing palladium nanoparticle (PdNP) catalysts, employing β-cyclodextrin (β-CD) as a reducing agent and cellulose methyl carboxylate (CMC) as a stabilizer. PdNP-based nanocomposites were prepared by varying the mass ratios of CMC to β-CD from 1 : 1 to 3 : 2. Their structural and physicochemical properties were thoroughly analyzed using multiple characterization techniques, including ultraviolet-visible spectroscopy (UV-vis), FTIR, DLS, Zeta potential, XRD, TGA, and TEM.

A new fanged frog of the genus Limnonectes Fitzinger, 1843 (Anura: Dicroglossidae) from Langbian Plateau, southern Vietnam.

We describe a new frog of the genus Limnonectes from the Langbian Plateau in southern Vietnam based on morphological and molecular analyses. Limnonectes splendissimus sp. nov.

A new species of Microhyla (Amphibia: Anura: Microhylidae), with an extended description of Microhyla nanapollexa from Vietnam.

Based on morphological and molecular evidences, we describe a new species of Microhyla (Nanohyla) from Deo Ca Mountain in Vietnam. The new species differs from congeners by high genetic divergences in 12S rRNA and 16S rRNA sequences (9.31-11.