A non-enzymatic doxycycline absorbance sensor based on manganese-doped zinc sulfide nanoparticles coated with chitosan.

The need for doxycycline detection is urgent because it is a vital antibiotic extensively utilized to combat bacterial diseases in humans and animals, and it is now at the forefront of the global battle against antibiotic resistance. Our research introduces an absorbance biosensor that employs chitosan-capped ZnS nanoparticles doped with manganese without an enzyme to address this critical need. Our study highlights the sensor's robust performance with nearly 100% recovery and stability over time to detect doxycycline from 0 to 72.

Enhanced dye treatment and bioelectricity generation in microbial fuel cells: the role of magnetite-inoculated anode and cosubstrates.

This study investigated the influence of cosubstrate complexity and magnetite-inoculated anodes on microbial fuel cells (MFCs) treating synthetic dyeing wastewater (500 mgCOD/L, 50 mg/L Reactive Black 5). Two MFCs types were constructed: one with magnetite pre-inoculated anodes (MFCM) and another with sludge-only inoculated anodes (MFCS). Both MFCs were operated with either starch or ethanol as the cosubstrate, and in both cases, MFCM consistently outperformed MFCS.

N-Vinylamides as Structural Isomers of Protein Grafted onto Deproteinized Natural Rubber and Their Mechanical Strengths.

This study proposes a novel strategy to enhance the mechanical properties of deproteinized natural rubber (DPNR) through the surface graft polymerization of protein-mimicking N-vinylamide monomers, which are N-vinylformamide (NVF), N-vinylacetamide (NVA), and N-methyl-N-vinylacetamide (MNVA), initiated by oxygen radicals. Although N-vinylamides generally exhibit low reactivity with oxygen radicals, selective grafting was successfully achieved via radical initiation at the polyisoprene surface, as confirmed by Fourier transform infrared spectroscopy and elemental nitrogen analysis. Tensile testing showed that approximately 70% of the modified samples surpassed the mechanical performance of high ammonia natural rubber (HANR), with the best-performing sample achieving a tensile strength of 15.

Comparative study of monoclinic and cubic WO nanoplates on NO gas-sensing properties.

Monoclinic and cubic WO nanoplates were controllably prepared from orthorhombic WO·HO (o-WO·HO) nanoplates a facile calcination method at 200 °C for 2 hours in ambient air using tubular and muffle furnaces, respectively. The o-WO·HO nanoplates were previously prepared from NaWO·2HO an acid precipitation method at room temperature. Calcination stimulated the dehydration and phase transformation from hydrated WO·HO nanoplates to WO nanoplates, and different crystal structures were observed under different air environments.

A fuzzy soft planar graph with application in image segmentation.

Fuzzy sets and soft sets are two distinct mathematical tools used for modeling real-world problems involving uncertainty. In this study, we combine these models to address vagueness and uncertainty within the framework of planar graphs. We initiate the notion of fuzzy soft planar graphs and explore their applications in image processing.

A strongly hydrogen-bonded one-dimensional high-spin dinuclear Fe(II) complex.

In this study, we report the synthesis and detailed characterization of a novel chain compound, composed of hydrogen-bonded dinuclear complexes, in which two Fe(II) ions are bridged by a 2,2'-biimidazolate (bim) dianion. The crystal structure of [(tpma)Fe(μ-bim)Fe(Hbim)] (1), where tpma = tris(2-pyridylmethyl)amine, exhibits a 1D zigzag chain architecture, formed through double hydrogen bonds between terminal 1-2,2'-biimidazolate monoanions (Hbim), with an N⋯H distance of 1.72 Å.

Microemulsion synthesis and optical temperature sensor properties in HA/β-TCP composite phosphors.

Herein, a novel microemulsion (ME) method for the synthesis of rare earth-element-doped hydroxyapatite (HA)/beta-tricalcium phosphate (β-TCP) composite phosphors was performed and yielded phosphors with intense green upconversion (UC) emission and high temperature sensitivity. The effect of polyvinyl alcohol (PVA) content on the structure and luminescence properties of the phosphors was investigated in detail. X-ray diffraction and Raman spectra showed that the mixed phases included the main hexagonal HA phase and the secondary orthorhombic β-TCP phase.

Combination of 2D and 3D nnU-Net for ground glass opacity segmentation in CT images of Post-COVID-19 patients.

Background And Objective: The COVID-19 pandemic plays a significant roles in the global health, highlighting the imperative for effective management of post-recovery symptoms. Within this context, Ground Glass Opacity (GGO) in lung computed tomography CT scans emerges as a critical indicator for early intervention. Recently, most researchers have investigated initially a challenge to refine techniques for GGO segmentation.

Corrigendum to "Some novel concepts of intuitionistic fuzzy directed graphs with application in selecting a suitable place for opening restaurant" [Heliyon Volume 10, Issue 14, July 2024, Article e33950].

[This corrects the article DOI: 10.1016/j.heliyon.

Secure energy outage analysis of UAV swarm-based network.

In the pursuit of enhancing energy-efficient and secure communications, this study explores secure energy outage probability (SEP) within unmanned aerial vehicle (UAV) swarm-based energy harvesting networks. UAVs, often deployed as relay nodes to facilitate communication between a source and a destination, face significant security and energy efficiency challenges, particularly when relying on battery-free configurations. These UAVs must simultaneously harvest energy from ambient sources and thwart eavesdropping attempts from external interceptors, demanding secure solutions for efficient operation.

Mechanism and kinetics of the reaction of atomic hydrogen with allene.

Context: In the present work, mechanism and kinetics of the H + allene reaction have been carefully conducted. The computed results reveal that the abstraction mechanism can lead to the formation of propargyl radical (CH), an important precursor for the formation of aromatic hydrocarbons, with the energy barrier of about 10.3 kcal/mol.

Green Synthesis of Biogenic Nano Zerovalent Iron Using Leaf Extract for Enhancing Peanut Seed Germination and Growth.

In this study, biogenic nano zerovalent iron (bio-nZVI) was synthesized through a green approach using Cleistocalyx nervosum (C. nervosum) leaf extract for use as a nanopriming agent for improving peanut seed germination and Basella alba growth. The scanning electron microscopy (SEM), Fourier-transform infrared (FT-IR), and X-ray diffraction (XRD) results demonstrated that bio-nZVI was successfully synthesized.

Finite-time velocity sensorless integral sliding mode control for roll-to-roll systems under matched disturbances.

Roll-to-Roll (R2R) systems operating in complex manufacturing industries encounter challenges from inherent system factors like model uncertainty or external interference. These factors directly lead to a significant reduction in productivity and output quality of the system, thereby causing great economic losses. In response to the growing demand for consistently high performance in industrial R2R processing, we propose a finite-time integral terminal sliding mode control integrated with a finite-time extended state observer.

A new ursane-type triterpene and potent antibacterial alkylbenzoquinones from the aerial parts of .

A new ursane-type triterpene () alongside two known alkylbenzoquinones, dihydromaesanin () and embeliquinone (), were isolated from the aerial parts of . The structure of was elucidated based on 1D-, 2D-NMR, and HRESI-MS data. The two alkylbenzoquinones were tested on 13 phytopathogenic bacterial strains.

A simple approach in balancing the slider-crank mechanisms applied to new systems.

This study presents a simple method for balancing a slider-crank mechanism which is applied to a new system. A counterweight is designed and located on the crank link to solve the vibration of slider-crank mechanism. The calculation of counterweight design is proposed to balance the single and double slider-crank mechanisms which are exploited to develop the fast scanning module of scanning acoustic microscopy (SAM) system.

Synthesis of g-CN-based nanocomposites with low Au loading for efficient methylene blue degradation.

In this study, nanocomposite materials were synthesized in two consecutive processes. Gold nanoparticles (AuNPs) were simultaneously deposited on the zinc oxide (ZnO) substrate and then calcined with urea to form the Au/ZnO/graphitic carbon nitride (g-CN) composite. X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive x-ray spectroscopy, and high-resolution transmission electron microscopy were used to analyze the crystal structures, content, and morphology of the Au/ZnO/g-CNsample.

ADC-MambaNet: a lightweight U-shaped architecture with mamba and multi-dimensional priority attention for medical image segmentation.

Medical image segmentation is becoming a growing crucial step in assisting with disease detection and diagnosis. However, medical images often exhibit complex structures and textures, resulting in the need for highly complex methods. Particularly, when Deep Learning methods are utilized, they often require large-scale pretraining, leading to significant memory demands and increased computational costs.

Decentralized graywater treatment by a combination of sequencing batch reactor and advanced oxidation processes for reuse in Vietnam.

The availability of sufficient clean water has become an increasing problem even in regions with generally humid climates such as Vietnam due to rising water consumption, particularly in densely populated urban areas. The associated problems, such as an increasing scarcity of groundwater, pose major challenges for water management. Appropriate treatment and reuse of graywater, which accounts for a high proportion of total wastewater in households, can contribute significantly to solving this problem.

A simple technique to improve performance of four-port wideband MIMO antenna using shorting pins.

This paper presents a four-port multiple-input multiple-output (MIMO) antenna with compact size, wideband operation, and high isolation characteristics. The wideband performance is achieved by generating two adjacent resonances, which are respectively produced by a half-wavelength slot and a metasurface (MS). Four MIMO elements are arranged in a 2 [Formula: see text] 2 configuration with zero spacing between the MIMO elements to achieve the compact size feature.

Synthesis of Three-Dimensional β-InS Nanoflowers with a Tunable Surface Area for Boosted Photocatalytic Degradation of Tetracycline and Rhodamine B.

Three-dimensional (3D) β-InS nanoflowers with a tunable surface area were successfully synthesized by a simple hydrothermal method. Their growth mechanism, observed through transmission electron microscopy (TEM) and scanning electron microscopy (SEM), revealed the formation of InS flowers by the assembly of 2D InS nanosheets. This unique 3D structure enhances optical absorption and tailors the band gap, as evidenced by UV-vis DRS and photoluminescence (PL) analyses.

Surfactant-tuned vanadium pentoxide for enhanced photocatalytic degradation of organic dyes: nanosheet microflower morphologies.

This study explores the impact of surfactants on the morphology and photocatalytic performance of VO materials synthesized a hydrothermal method, followed by calcination. Two surfactants, Pluronic P123 and cetrimonium bromide (CTAB), were used, leading to the formation of VO nanosheets (VO-P123) and VO microflowers (VO-CTAB), each exhibiting distinct structural characteristics and photocatalytic efficiencies. The prepared nanosheets are of sizes ranging from a few micrometers and thickness of approximately 50-60, and the flower-like structures have an average diameter of approximately 5 micrometers.

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.

Formability Assessment of C1100 Pure-Copper Tube Considering an Enhanced Modified Maximum Force Criterion.

The Modified Maximum Force Criterion (MMFC) and Marciniak-Kuczynski (MK) models were initially developed to evaluate strain localization in sheet metals. This study investigates their use in predicting the forming limit diagram (FLD) of a tubular material, specifically C1100 pure-copper tubes. To achieve this, uniaxial tensile tests were performed to develop a robust constitutive model, capturing the material's hardening behavior with a combined Swift-Voce hardening law.

An electrospinning deposited cobalt oxide nanofiber gas sensing device: selective enhancement as a thermal electronic nose.

Cobalt oxide nanofibers (CoO NFs) were synthesized using a two-step procedure involving electrospinning followed by calcination. The microstructural, morphological, and elemental properties of the nanofibers were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and energy-dispersive spectrometry (EDS). The CoO NFs exhibited high structural integrity, chemical purity, and uniform diameters ranging from 20 to 50 nm.

The interictal transcriptomic map of migraine without aura.

Background: The present study aimed to deliver a replicable transcriptomic map of migraine without aura (MO) and its comprehensive, genome- and drug discovery focused analysis to identify hypotheses for future research- and clinical attempts.

Methods: We recruited 30 controls and 22 MO patients without serious chronic comorbidities/regular medication intake. RNA-sequencing was conducted interictally at two different time points to identify replicable differential gene expression and enriched pathways.