Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 44 for “"GNPs"”.
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Single Step Synthesis of Antibiotic Kanamycin Embedded Gold Nanoparticles for Efficient Antibacterial Activity
… of the drugs. Among these, gold nanoparticles (GNPs) were found to have profound biomedical applications. In current research, kanamycin embedded GNPs were prepared in a single step, single phase, and bio-friendly (green synthesis) procedure. The synthesized Kanamycin-GNPs (Kan-GNPs) were …
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One-Step Synthesis of Kanamycin Functionalized Gold Nanoparticles With Potent Antibacterial Activity Against Resistant Bacterial Strains
… nanomaterials, especially gold nanoparticles (GNPs) capped with antibacterial agents are proving to be an effective and novel strategy against multi-drug resistant (MDR) bacteria. In this study, we report a one-step synthesis of kanamycin-capped GNPs (20 ± 5 nm) utilizing the combined reducing …
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Study on the properties of gold nanoparticles as plasmonic sensing material for chlorothalonil detection
… performed to grow gold nanoparticles (GNPs) onto solid substrates. The process parameters; seeding time, growth time and effect of capping agent’s molecular weight were investigated to monitor the effect on nanoparticles formation. It was found that increasing the seeding time affect …
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Green Synthesis and Evaluation of Catalytic Activity of Sugar Capped Gold Nanoparticles
… for the synthesis of gold nanoaprticles (GNPs) suffer from the challenges of polydispersity, stability and use of toxic and harmful chemicals. To overcome these limitations of conventional methods, in our present study, we made an attempt to design a method for the green synthesis of …
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Antimicrobial Nanoparticles: A Green and Novel Approach for Enhancing Bactericidal Efficacy of Commercial Antibiotics
… nanomaterials, especially gold nanoparticles (GNPs) capped with antibacterial agents, are proving to be an effective and novel strategy against multidrug resistant (MDR) bacteria. In this study, we report a one-step synthesis of antibioticcapped GNPs (25 ± 5 nm) utilizing the combined reducing …
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Short- and Long-Term Effects of Commercially Available Gold Nanoparticles in Rodents
Gold nanoparticles (GNPs) are currently being intensely investigated for their potential use in biomedical applications. Nanotoxicity studies are urgently needed to validate their safety in clinical practice. The objective of this research was to assess the acute, subacute, and chronic effects of a …
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Antioxidant and anticholinesterase activities of centella asiatica phenolic extract-mediated gold nanoparticles
… and optimization of gold nanoparticles (GNPs) using C. asiatica phenolic extract (CAP) were reported followed by the characterization with UV-vis, FTIR, Zeta potential, FESEM, EDX and XRD analyses. Total phenolic and flavonoid contents (TPC and TFC), antioxidant and anticholinesterase …
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Single-Step Biofriendly Synthesis of Surface Modifiable, Near-Spherical Gold Nanoparticles for Applications in Biological Detection and Catalysis
… and rational design of gold nanoparticles (GNPs) for biomedical applications in recent years. Such efforts warrant reliable, viable, and biofriendly synthetic methodology for GNPs with homogeneous sizes and shapes, particularly sizes above 30 nm, which is currently challenging. In the …
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Radiation Dosimetry in the Presence of Gold Nanoparticles
The use of gold nanoparticles (GNPs) to enhance the dose due to radiation, through increased photoelectric effect interactions, has shown promise in vivo and in vitro. Monte Carlo studies have worked towards quantifying the dose enhancement and the dosimetry surrounding GNPs. This thesis …
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Improvement of Thermoelectric Properties Through Manipulation of their Microstructure: the Effect of Graphene Reinforcement
… by reinforcement with graphene nanoplates (GNPs). To the best of our knowledge, there is no specific report in the open literature to determine the reinforcing effects of graphene nanofillers (e.g., GNPs) on thermoelectric products. There is a lack of a comprehensive assessment in the …
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Spiritual Care in Advanced Practice Nursing
… health worsens, geriatric nurse practitioners (GNPs) were chosen to participate in this study. This cross-sectional, descriptive, survey design investigates the relationships and differences between practicing GNPs spiritual perspectives and their ability to assess clients' spiritual care needs …
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Development of intranasal therapeutic nanoparticles for the treatment of neurological disorders
… to the brain following IN administration. GNPs are a biodegradable, biocompatible, and cost-effective drug delivery platform. As we have previously demonstrated, GNPs can not only pass into the brain parenchyma following intranasal administration, but also extend and enhance the …
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Decoration of graphene sheets with metal and metal oxide nanostructures by low-pressure plasma deposition
… Nb2O5 deposition onto graphite nanoplatelets (GNPs) by the variation of the deposition process parameters. The structural, chemical and electronic properties of the decorated GNPs with Nb2O5 layers were studied. It was found that with deposition of Nb2O5 layers onto GNPs, tensile strain was …
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Dispersion of graphene nanoplatelets in water with surfactant and reinforcement of mortar with graphene nanoplatelets
… dispersion behavior of graphene nanoplatelets (GNPs) in water with water reducing admixture (WRA), a type of surfactant. The dosage of GNPs was fixed at 0.2wt% of water, and the dosage of the WRA functioned as the controlled variable. Sedimentation experiments qualitatively characterized the …
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Gelatin nanoparticles for improved neuroprotection of intranasally delivered osteopontin in ischemic stroke
… Herein, we show the development of GNPs as a biodegradable, biocompatible, and cost-effective drug delivery platform using intranasal delivery of a peptide fragment to treat ischemic stroke in a rat model as proof-of-concept. Ischemic stroke is a leading cause of adult disability and …
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The Generation of Alternative Transcripts as a Means of Regulating Phosphorylation in Sonic Hedgehog Medulloblastoma
… tumor, arises from granule neuron precursors (GNPs) through aberrant SHH signaling. Murine postnatal day 7 (P7) GNPs are highly proliferative and share strong molecular and transcriptomic similarities with MB, providing an ideal model to study phosphorylation dynamics in tumors and their …
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Multi-functional applications of graphene related materials in cementitious composites
… the main GRM material, graphene nanoplatelets (GNPs), in cementitious systems. Subsequently, the effect of the GRMs on the early age, mechanical and permeability performance of cement pastes and mortars was investigated. It was found that GNPs reduced the fluidity, delayed the hydration, and had …
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Mechanisms and Targeting of Neurodevelopmental Regulator Rest In Medulloblastoma Dissemination
… SHH MB, cerebellar granule neural progenitors (GNPs). While these mice did not form tumors, an abnormal organization of GNPs in the cerebella of these mice was observed. Molecular investigation of these REST-high GNPs revealed heightened expression of the chemokine receptor, C-X-C-motif receptor …
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A Computational and Experimental Study on the Electrical and Thermal Properties of Hybrid Nanocomposites based on Carbon Nanotubes and Graphite Nanoplatelets
… nanotubes (CNTs) and graphite nanoplatelets (GNPs) are carrying great promise as two important constituents of future multifunctional materials. Originating from their minimal defect confined nanostructure, exceptional thermal and electrical properties have been reported for these two …
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Piezoresistive Hybrid Nanocomposites for Strain and Damage Sensing: Experimental and Numerical Analysis
… nanotubes (CNTs) and graphite nanoplatelets (GNPs) demonstrate remarkable electrical and mechanical properties, which suggest promising structural and functional applications as fillers for polymer nanocomposites.</p> <p>The piezoresistive behavior of these nanocomposites makes them ideal for …
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