256 results match your criteria: "Institute for Color Science and Technology[Affiliation]"

The primary goal of this study is the enhancement of the mechanical properties of polyurethane (PU) coating via introducing a hybrid sandwich-like nanofiller composed of layered double hydroxide (LDH) grown on graphene oxide. To increase the nanofiller compatibility with the PU matrix, its surface was functionalized with an amino-functional silane coupling agent(APTES). Characterization of the particles with Raman, TGA, EDX-mounted FESEM, XRD approved the prosperous synthesis and modification of the nanosheets.

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This work presents a new and efficient biobased hybrid hinge based on lanthanum (La) cations and trigonella grandiflora (TG) extract, represented as La@TG, in a 3.5% NaCl solution, as an organic/inorganic mild steel corrosion inhibitor. The concentration of La cations and TG components released into the solution at various pH levels was assessed using UV-Vis/ICP-OES analysis.

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Metal-organic frameworks (MOFs) are a highly versatile class of materials that have attracted considerable attention because of their unique structural tunability and broad range of applications. The introduction of multiple metals and ligands into the MOF structures has emerged as an effective strategy to enhance their properties and expand their application range. Mixed-metal MOFs incorporate metals with varying oxidation states or coordination environments, thereby improving properties such as stability, porosity, and catalytic activity.

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Plastic pollution in aquatic ecosystems has become a global concern, and nanoplastics, due to their small size and high penetration potential, pose significant risks to aquatic organisms. This study aimed to evaluate the effects of polystyrene nanoplastics (PS-NPs) on oxidative stress biomarkers, blood biochemical parameters, and digestive enzyme activities in Goldfish (). The experiment was conducted over 21 days, exposing fish to four different dietary concentrations of PS-NPs (0, 1, 10, and 100 mg/Kg).

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In this study, a novel approach is presented to overcome the drawbacks of titanium dioxide (TiO) as a semiconductor photocatalyst which has rapid charge carrier recombination as well as low visible-light response. These drawbacks lead to the decline of its performance in photocatalytic applications. For this purpose, sulfur (S) was incorporated into Ti structural vacancies (Tiv) by using a vacancy capture method.

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Background: The water sorption and hydrolysis of silane over time can compromise the filler-resin matrix interface and cause the mechanical degradation of composite resins. The use of hydrophobic polymers for the surface treatment of fillers may improve the mechanical properties and durability of composites.

Objectives: The present study aimed to assess the effect of the surface treatment of fillers with hydroxyethyl methacrylate (HEMA)-phosphate copolymer on the mechanical properties of an experimental composite resin.

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This study aimed to enhance the antibacterial efficacy of BBR, a natural alkaloid with limited bioavailability and solubility, by encapsulating it in niosomes using saponin as a biosurfactant. Niosomes, non-ionic surfactant-based vesicles, improve drug stability and targeted delivery. The niosomes were synthesized using a ball milling-assisted method to optimize particle size and encapsulation efficiency.

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Objectives: This study aimed to evaluate and compare the antibacterial properties and optical characteristics of clear orthodontic aligners coated with zinc oxide (ZnO) and magnesium oxide (MgO) nanoparticles.

Materials And Methods: In this experimental laboratory study, polyethylene terephthalate glycol (PETG) aligner samples were coated with nanoparticles of ZnO, MgO and a combination of both (ZnO + MgO). The surface coatings were analysed before and after stability testing using field emission scanning electron microscopy (FESEM).

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This study focuses on enhancing solar energy capture efficiency by introducing innovative hybrid nanofluids for use in solar thermal collectors, whose performance largely depends on the absorption properties of the working fluid. The newly developed hybrid nanofluids, MXene/NH2-UiO66 (Zr) (noted as MX/UO66) and MXene/MIL-88B (Fe) (noted as MX/ML88), were synthesized using an in-situ solvothermal method, combining annealed Ti3C2Tx MXenes with water-stable metal-organic frameworks (MOFs). These nanofluids achieved high efficiency at low concentrations, providing both economic and performance benefits.

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Developing a New Method of Transformation for Obtaining XYZ Color Values from RGB Images for Agricultural Applications.

Sensors (Basel)

December 2024

Research Federation of Visual and Cultural Sciences-SCV, FR CNRS 2052, 59100 Lille, France.

The extraction of device-independent color values from affordable and accessible digital images based on a standard color space system is crucially necessary for agricultural applications, where color information for plant monitoring or diagnostics is required. This study aimed to develop a transformation matrix for obtaining XYZ color coordinates from the RGB values of digital images for agricultural applications. The calibration procedure was based on Munsell and Macbeth color charts.

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MXene nanosheets have recently become a focus of research for corrosion protection due to their two-dimensional, sheet-like structure and distinct physicochemical characteristics. Nevertheless, their susceptibility to restacking and oxidation restricts their practical applications. To address this, the study proposes a custom hybrid structure by growing molybdenum disulfide (MoS) nanoparticles on the TiC MXene nanosheets (MX/MS) to prevent oxidation and restacking.

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Article Synopsis
  • Green corrosion inhibitors like adiantum capillus-veneris (ACV) extract are explored as eco-friendly alternatives to synthetic materials for preventing mild steel corrosion in hydrochloric acid.
  • The study utilized electrochemical techniques, including electrochemical impedance spectroscopy (EIS) and polarization, to assess ACV's effectiveness, finding an impressive 88% corrosion inhibition at 800 ppm.
  • Advanced analysis, including machine learning models, confirmed ACV’s role as a mixed inhibitor and demonstrated how optimization techniques can effectively predict corrosion resistance.
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In addition to the basic and main parts of hospital equipment, 316 L stainless steel is widely utilized in futures such as nails and screws, wires and medical bone clips, dental implants, heart springs (stents), needles, surgical scissors, etc. In the present study, the electrophoretic deposition of a composite based on chitosan (CS), gelatin, nano and microparticles of hydroxyapatite on a 316 L stainless steel substrate was investigated. Hydroxyapatite particles are added to it due to the ossification abilities of steel and due to an enhanced adhesion and bone production, CS and biocompatible gelatin polymer particles were also added to hydroxyapatite.

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The development of sustainable and efficient electrochemical processes is crucial for addressing global challenges related to water scarcity. In this study, we present a novel 3D core-shell electrocatalyst, Pt@ZnAl-LDH, supported on low-grade charcoal (LGC), which exhibits exceptional electrocatalytic activity for the degradation and decolorization of dye and the electrocatalytic conversion of glycerol to valuable C chemicals. The electrocatalytic degradation of methylene blue dye from water was investigated with a focus on the impact of temperature, pH, and dye concentration.

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Advanced multi-functional epoxy coating with physical barrier/shielding against corrosive species, self-repairing-capability/active anti-corrosive behavior, abrasion resistance, and thermomechanical durability was established in this study. For this purpose, zinc/l-cysteine (ZC) inbuilt pH-sensitive covalent organic framework (COF) decorated two dimensional (2D) layered amino-functionalized (Si) oxidized hexagonal boron nitride (ZC-COF-Si-Oh-BN) container was prepared. Different analyses such as FT-IR, XRD, BET, XPS, TGA, TEM, and FE-SEM were utilized to evaluate the synthesized containers and pristine materials.

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The current investigation has utilized a simple and constructive stratified method to synthesize a binary (Cs/Z-8: chitosan (Cs) and zeolitic imidazolate framework-8 (Z-8)) and ternary Cs/Z-8/Z-67 (Z-67: ZIF-67) biocomposites at room temperature. A certain amount of Cs/Z-8 (0.05, 0.

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Advances in stimuli-responsive gold nanorods for drug-delivery and targeted therapy systems.

Biomed Pharmacother

November 2024

Clinical Biomechanics and Ergonomics Research Center, AJA University of Medical Sciences, Tehran, Iran; Research Center of Aerospace Medicine, AJA University of Medical Sciences, Tehran, Iran. Electronic address:

Article Synopsis
  • - Gold nanorods (AuNRs) are gaining attention in the biomedical field due to their unique properties that allow for advanced treatments using various stimuli like magnetic fields, pH, and light.
  • - These nanorods are versatile for targeted therapy, imaging, and drug delivery, with the potential for enhanced control when using dual or multi-stimuli responses.
  • - The review summarizes the improvements in therapeutic effectiveness and drug release control with AuNRs, discusses recent design strategies, and addresses current challenges and future prospects for clinical use.
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Article Synopsis
  • - The study explores the use of gemini surfactants (GSs) as a pH-sensitive delivery system for combining curcumin (Cur) and tamoxifen citrate (TMX) in cancer treatment, aiming to enhance efficacy and reduce side effects in breast cancer cells (MCF-7 and MDA-MB-231).
  • - It details the synthesis and characterization of nanoparticles (NPs) through techniques like FTIR, XRD, and TEM, which revealed successful formation with a size of approximately 252 nm and effective drug loading capacities of 93.84% for TMX and 90.18% for Cur.
  • - The results demonstrated controlled drug release at a lower pH over 72
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Objective: This study assessed the effect of the anodization of titanium abutments on the color parameters and color difference of lithium disilicate (LDS) all-ceramic crowns.

Materials And Methods: In this study, 19 straight abutments were divided into two groups: anodized (n = 9) and non-anodized control (n = 9), with one hybrid zirconia abutment as a reference. Anodization was achieved by applying 63 V energy using seven 9 V flat batteries in series, with an electrolyte solution comprising 1 g trisodium phosphate in 250 mL distilled water for 5 s, resulting in a gold-yellow color.

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Purpose: Receptor-mediated transcytosis (RMT) is a more specific, highly efficient, and reliable approach to crossing the blood-brain-barrier (BBB) and releasing the therapeutic cargos into the brain parenchyma.

Methods: Here, we introduced and characterized a human/mouse-specific novel leptin-derived peptide using , and experiments.

Results: Based on the bioinformatics analysis and molecular dynamics (MD) simulation, a 14 amino acid peptide sequence (LDP 14) was introduced and its interaction with leptin-receptor (ObR) was analyzed in comparison with an well known leptin-derived peptide, Lep 30.

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Herein, a highly efficient colorimetric chemosensor incorporating ion-imprinted electrospun nanofiber was developed for the removal and detection of Cu ions. In this regard, PVA/chitosan composites were used as the polymeric matrix, and 1-(2-pyridylazo)-2-naphthol was employed for complex formation. The prepared naked-eye sensor was characterized using Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, scanning electron microscopy, atomic force microscopy, differential scanning calorimetry, thermogravimetric analysis, and X-ray diffraction analysis, revealing the morphological, structural, and molecular properties of the sensor.

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Introduction: One of the most common problems in endodontic treatments is post-treatment pain, and sealers might be one of the factors influencing the degree of pain following root canal therapy. The purpose of this study is to compare pain following endodontic treatment using an AH-26 resin sealer against the Resil experimental sealer in mandibular molars with irreversible pulpitis.

Materials And Methods: One hundred patients with irreversible pulpitis in the mandibular first or second molar were randomly divided into two groups (=50) based on the type of sealer applied.

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The term "biomass" encompasses all substances found in the natural world that were once alive or derived from living organisms or their byproducts. These substances consist of organic molecules containing hydrogen, typically oxygen, frequently nitrogen, and small amounts of heavy, alkaline earth and alkali metals. Magnetic biochar refers to a type of material derived from biomass that has been magnetized typically by adding magnetic components such as magnetic iron oxides to display magnetic properties.

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The presence of tetracycline and dye as organic contaminants has led to the poisoning of wastewater. The aim of this study is to synthesize a novel biocomposite material by decorating natural starch polymer granules with metal-organic framework (MIL100) and cobalt ferrite magnetic (CoFeO) nanoparticles. The synthesized ternary magnetic biocomposite (Starch/MIL100/CoFeO) was used for the photocatalytic degradation of methylene blue (MB) and tetracycline (TCN) using LED visible light.

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The production of antibacterial colored textiles using nanomaterials (NMs) has become an ideal goal from both a research and industrial perspective. In this study, the clean synthesis and characterization of silver nanoparticles (AgNPs) on polyamide fabrics were performed using mullein extract for the first time. Natural dyes were extracted from mullein leaves using an ultrasonic method, with an optimal amount of 15 g/L.

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