A5081087074- Carbon Nanotubes in Composites
- Nanoparticles: synthesis and applications
- Fullerene Chemistry and Applications
- Graphene research and applications
- Conducting polymers and applications
- Nanotechnology research and applications
- Diamond and Carbon-based Materials Research
- Ion-surface interactions and analysis
- Nuclear Physics and Applications
- Graphene and Nanomaterials Applications
- Organic Electronics and Photovoltaics
- Heavy Metal Exposure and Toxicity
- Microplastics and Plastic Pollution
- Recycling and Waste Management Techniques
- Neuroscience and Neural Engineering
- X-ray Spectroscopy and Fluorescence Analysis
- Polymer Nanocomposite Synthesis and Irradiation
- Nanopore and Nanochannel Transport Studies
- Nonlinear Optical Materials Studies
- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Fusion materials and technologies
- Healthcare and Environmental Waste Management
- High Altitude and Hypoxia
- Laser-Ablation Synthesis of Nanoparticles
Technological University Dublin
2005-2024
22q11 Ireland
2019
University College Dublin
2016
University of New Mexico
1995-2014
University of Wisconsin–Madison
2006
Trinity College Dublin
2003-2005
United States Department of the Army
1998
This paper presents the outcomes from a workshop of European Network on Health and Environmental Impact Nanomaterials (NanoImpactNet). During workshop, 45 experts in field safety assessment engineered nanomaterials addressed need to systematically study sets with specific metrics generate data set which would allow establishment dose-response relations. The group concluded that international cooperation worldwide standardization terminology, reference materials protocols are needed make...
Raman microscopy is employed to spectroscopically image biological cells previously exposed fluorescently labelled polystyrene nanoparticles and, in combination with K-means clustering and principal component analysis (PCA), demonstrated be capable of localising the identifying subcellular environment based on molecular spectroscopic signatures. The neutral 50 nm or 100 nm, as characterised by dynamic light scattering, are shown non-toxic a human lung adenocarcinoma cell-line (A549),...
Abstract A complete cytotoxic profile of exposure to silver (AgNP) nanoparticles investigating their biological effects on the innate immune response circulating white blood cells is required form a understanding risk posed. This was explored by measuring AgNP‐stimulated gene expression pro‐inflammatory cytokines interleukin‐1 (IL‐1), interleukin‐6 (IL‐6) and tumour necrosis factor‐alpha (TNF‐α) in THP‐1 monocytes. further study, human monocytes extracted from cohort samples, carried out...
In this study a number of composite-like samples γ-cyclodextrin and HiPco carbon nanotubes were prepared. The first sample was prepared by simple grinding procedure, which has been reported to cut nanotubes. other obtained via refluxing procedure analogous similar studies on fullerenes γ-cyclodextrin. analyzed using absorption Raman spectroscopy, differential scanning calorimetry. results presented show clear evidence an intermolecular interaction between single-walled
Single Wall Carbon Nanotubes (SWNTs) are insoluble in most organic solvents, such as toluene. Improvements the solubility of SWNTs are, however, seen a result interaction with dye molecules terphenyl and anthracene. The suspensions formed stable for periods greater than 24 months. Spectroscopic analysis clearly shows between molecules. fluorescence is quenched on SWNTs, and, case terphenyl, spectrum red shifted. Raman spectroscopy composites vibrations that not present either or powders. At...
Carbon nanotubes (CNTs) did not exhibit strong interactions with Biliverdin IX beta reductase enzyme (BVRB) in water. With the use of noncovalent functionalization by surfactant Triton X-100, surfaces CNTs were changed from hydrophobic to hydrophilic. The hydrophilic surface CNT-Triton conjugate interacts BVRB, thus creating a water-soluble complex. Results ultracentrifugation through sucrose gradient and gel electrophoresis show presence enzyme. Raman spectroscopy confirmed that indeed conjugates.
Micro/nano-plastics (MNPs) have been found within many environments and organisms including humans, making them a significant growing concern. Initial research into the potential detrimental effects these MNPs both from acute chronic exposure has ongoing but still requires substantially more data to clarify. This presents response of nano-polystyrene (NPS) on Raphidocelis subcapitata, freshwater alga, under an existing toxicity test along with additional analytical techniques try identifying...
Interactions between arc discharge single-walled carbon nanotubes within polymer composites have been well documented. Here hybrid systems of the conjugated organic poly(p-phenylene vinylene-co-2,5-dioctyloxy-m-phenylene vinylene) (PmPV) and HiPco SWNTs are explored using UV/vis/NIR Raman spectroscopy at 514.5 632.8 nm to determine specific interactions. An examination radial breathing modes shows similar tube diameters 1.28 1.35 selected for both composites. The corresponding G lines show...
Solubilization of single walled carbon nanotubes (SWNT) in the presence polycyclic aromatic hydrocarbons (PAHs) such as p-terphenyl and anthracene has been shown. The suspensions formed are stable for periods greater than 48 months but to date experimental research is scarce regarding interactions that taking place. Spectroscopic analysis Raman fluorescence used probe occurring between PAHs SWNT over a wide concentration range. Previous studies show quenched on interaction with case...
O bjectives : To analyse the direct antiproliferative effects of both piroxicam and meloxicam at a variety concentrations on series canine cancer cell lines mechanism death. M ethods The in vitro various cultures (Madin‐Darby kidney cells, osteosarcoma, mammary carcinoma, lymphoma) were assessed with respect to proliferation inhibition apoptosis induction. Western blot analysis cyclooxygenase‐1 cyclooxygenase‐2 expression was performed all lines. R esults All used this study positive apart...
Due to the transposition of EU Directive 2003/10/EC into Irish Law, entertainment sector was obligated comply with requirements Safety, Health and Welfare at Work (General Application) Regulations 2007, Chapter 1 Part 5: Control Noise since February 2008. Compliance examined in 9 nightclubs Ireland. The typical daily noise exposure 19 bar employees measured using 2 logging dosimeters a Type fixed position sound level meter. Physical site inspections identified nightclub control measures....
G. Chambers and A. R. Ubbelohde, J. Chem. Soc., 1955, 285 DOI: 10.1039/JR9550000285
The presence of sub-micron-sized plastics in the environment has been increasing, with possible risks these particles remaining relatively unknown. In order to assess toxicity particles, 100 nm diameter green fluorescent nano-polystyrene spheres (NPS) (20-60 mg/L) were exposed zebra mussels (
Abstract Establishing realistic exposure scenarios is critical for cytotoxic investigation of silver nanoparticles (AgNP) in the gastrointestinal tract. This study investigated potential interaction with and effect biofluid components, namely cholic acid, deoxycholic acid ursodeoxycholic on AgNP toxicity. Two cell lines corresponding to organs related components were employed. These HepG‐2 a hepatocellular carcinoma derived from liver tissue Hep2 an epithelial line. Physiochemical screening...
<italic>In vivo</italic>condition OECD tested the exposure of<italic>Daphnia magna</italic>to fluorescence-tagged polystyrene for a comparative study to bulk plastic toxicity.