A5011603134- Radiation Therapy and Dosimetry
- Gas Sensing Nanomaterials and Sensors
- Heavy metals in environment
- Graphite, nuclear technology, radiation studies
- High voltage insulation and dielectric phenomena
- Radioactivity and Radon Measurements
- Advanced Radiotherapy Techniques
- Analytical Chemistry and Sensors
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Extraction and Separation Processes
- Surface Modification and Superhydrophobicity
- Boron Compounds in Chemistry
- Radiation Effects and Dosimetry
- Aluminum Alloys Composites Properties
- Smart Materials for Construction
- Membrane-based Ion Separation Techniques
- Transition Metal Oxide Nanomaterials
- Conducting polymers and applications
- Air Quality and Health Impacts
- Asphalt Pavement Performance Evaluation
- Microstructure and mechanical properties
- Electrical Fault Detection and Protection
- Electromagnetic Compatibility and Noise Suppression
- Electrostatic Discharge in Electronics
Qatar University
2018-2023
University of Surrey
2010-2013
National Physical Laboratory
2010-2013
Clatterbridge Cancer Centre NHS Foundation Trust
2012
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud
2012
Istituto Nazionale di Fisica Nucleare
2012
UCLouvain
2012
Cliniques Universitaires Saint-Luc
2012
Enrico Fermi Center for Study and Research
2012
Ion Beam Applications (Belgium)
2012
This paper discusses the state of art in application self-healing silicone-based materials for outdoor high-voltage insulation. Both dynamic behavior dimethyl side groups silicone rubber and diffusion a bulk siloxane to maintain low surface energy are respectively reported as intrinsic mechanisms responsible rubber. Localization, temporality, mobility, type synthesis aspects defining efficiency ability In addition, deterioration with filler loaded into insulation housing composites is...
The conversion of absorbed dose-to-graphite in a graphite phantom to dose-to-water water is performed by stopping power ratios. If, however, the charged particle fluence not equal at equivalent depths and water, correction factor, kfl, required as well. This particularly relevant derivation dose-to-water, quantity interest radiotherapy, from measurement obtained with calorimeter. In this work, factors for 60 MeV mono-energetic protons were calculated using an analytical model five different...
Direct alcohol fuel cells are deemed as green and sustainable energy resources; however, CO-poisoning of Pt-based catalysts is a critical barrier to their commercialization. Thus, investigation the electrochemical CO oxidation activity (COOxid) catalyst over pH ranges function Pt-shape necessary not yet reported. Herein, porous Pt nanodendrites (Pt NDs) were synthesized via ultrasonic irradiation method, its performance was benchmarked in different electrolytes relative 1-D chains...
Flexible membranes of poly(vinyl alcohol) (PVA) polymer and CuO nanoparticles for x-ray detection applications are reported in this work. PVA represents a matrix nanoparticles, its flexibility electrical conductivity enhanced by addition glycerol (GL) plasticizer. Nanoparticles an average size 6.3∓2.4nm produced solvothermal method added to the + GL solution with different concentrations. The flexible fabricated casting on glass substrates. effect blending characteristics including as well...
In this article, the degradation mechanisms of unfilled polydimethylsiloxane with different molecular weights are investigated under dry-band arcing using inclined plane tracking and erosion test material characterization techniques. Tracks carbonaceous residue formed as byproducts radical-based crosslinking prevalent over weight increases. Erosion becomes dominant that undergoes mainly depolymerization during at lower weights. Accordingly, due to a progressive on surface is pattern observed...
An artifact-free bulk nanocrystalline (NC) aluminum (Al)-2% lithium (Li) alloy was synthesized in this study using in-situ consolidation via a combination of cryogenic and room temperature milling. The mechanical behavior investigated by tensile testing microhardness measurements, it compared with coarse-grained (CG) Al alloys commercially pure NC the same method. transmission electron microscopy (TEM) analysis revealed that grain size Al-2% Li are 18 nm 29 nm, respectively. Al-Li showed...
In this study, α-LiAlO2 was investigated for the first time as a Li-capturing positive electrode material to recover Li from aqueous resources. The synthesized using hydrothermal synthesis and air annealing, which is low-cost low-energy fabrication process. physical characterization showed that formed an phase, electrochemical activation revealed presence of AlO2* deficient form can intercalate Li+. AlO2*/activated carbon pair selective capture Li+ ions when concentrations were between 100...
Nanocrystalline (nc) Cu and Cu–1% Nb bulk materials are synthesized using a combination of cryogenic room temperature ball milling. The grain size values these in situ consolidated Nb, determined transmission electron microscopy, found to be 22 nm 18 nm, respectively. In this investigation, isochronal heat treatments performed for 1 h establish microstructural changes as function temperature. annealing nc at 1073 K reveals slight increase the average from 45 nm. Cu, however, increases about...
This paper investigates the effect of test voltage level on performance silicone rubber in inclined plane tracking and erosion test. Silicone composites, filled with either alumina tri-hydrate or ground silica to 30 wt% 50 wt%, are tested under 2.5 kV, 3.5 4.5 kV. The degradation patterns surfaces found dependent during test, as dry-band arcing tends form tracks relatively mild voltages deep critical voltage. These findings confirm importance employing while evaluating resistance In...
The IAEA TRS-398 code of practice can be applied for the measurement absorbed dose to water under reference conditions with an ionization chamber. For protons, combined relative standard uncertainty on those measurements is less than 2% while light-ion beams, it considerably larger, i.e. 3.2%, mainly due higher contributions air stopping power ration and W air-value beam quality correction factors kQ,Q0 . To decrease this uncertainty, a quantification proposed using primary level graphite...
This paper investigates the tracking and erosion performance of silicone rubber filled with alumina trihydrate under DC dry band arcing in inclined plane test (IPT). Alumina is incorporated into at 50 wt.% loading level for preparing composites, which are exposed to mild severe voltage levels test. Test outcomes indicate that mechanism deterioration changes respect severity arcing. It found tends stimulate surface due thermal degradation relatively higher (critical). Moreover, results not...