A5039869875- Nuclear Physics and Applications
- Radioactive contamination and transfer
- Graphite, nuclear technology, radiation studies
- Nuclear and radioactivity studies
- Nuclear reactor physics and engineering
- Radiation Detection and Scintillator Technologies
- Radiopharmaceutical Chemistry and Applications
- Muon and positron interactions and applications
- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Medical Imaging Techniques and Applications
- Cultural Heritage Materials Analysis
- Analytical Chemistry and Sensors
- Analytical Chemistry and Chromatography
- Nuclear Materials and Properties
- Chemical Reactions and Isotopes
- Archaeology and ancient environmental studies
- Fusion materials and technologies
- Radioactive Decay and Measurement Techniques
- Isotope Analysis in Ecology
- Advanced NMR Techniques and Applications
- Molecular Junctions and Nanostructures
- Ammonia Synthesis and Nitrogen Reduction
- Mineralogy and Gemology Studies
- Electron Spin Resonance Studies
Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
2012-2024
Universitatea Națională de Știință și Tehnologie Politehnica București
2015
University of Rome Tor Vergata
2005-2006
University of Bucharest
2003
Universitatea Nicolae Titulescu din București
2003
The main objective of this study was to investigate thermoplastic materials design and fabrication processes for manufacturing composite impeller blades. Polyurethane (Necuron) ABS (3D printed) thermoplastics were chosen due their good mechanical properties, tooling applications, easy lifetime. For both thermoplastics, workability hardness tests performed, as well microstructural characterization evaluating physical properties. A 1:2.5 scale mould designed milled from Necuron N651 N1001 used...
18 F-FDG is a glucose analog in which the hydroxyl group on second carbon substituted with F, being used as an indicator of uptake and cell viability.The aim this work was to synthesize validate methodology for assessment its both radiochemical chemical purities, according European Pharmacopoeia.The proposed encompasses three chromatographic methods: radio-HPLC, radio-TLC HS/GC.Radiochemical impurities may originate from radionuclide production, incomplete purification radiolysis after...
The aim of this work was the development and validation a fast analytical method to determine residual solvents content in radiopharmaceuticals such as: 18F-Fluorodeoxyglucose (18F-FDG), 18F-Fluoroestradiol (18F-FES), 18F-Fluorothymidine (18F-FLT),18F-Fluoromisonidazole (18F-FMISO). Radiopharmaceuticals are radioactive preparations for medical purposes used nuclear medicine as tracers diagnostic imaging treatment certain diseases. Positron Emission Tomography (PET) is technique that consists...
Tritium bonded to electrophilic atoms like O, S, N or halogens can spontaneously exchange places with hydrogen from the water.These tritium species are exchanged even at a very low temperature and have generic name `labile'.In this paper, new facility for removal quantitative determination of labile is shown.The working principle as follows: sources brought in contact protic solvent, leading spontaneous tritium, then obtained tritiated solvent extracted by distillation.The was tested eciency...
The practical implementation of the European Council Directive no. 2013/59/EURATOM in Romania requires reliable indoor measurements radon (222Rn) activity concentration air. In Romania, several Testing Laboratories were designated for and/or air by Romanian National Commission Nuclear Activities Control (CNCAN). calibration instruments used is very important. IFIN-HH, through its Ionizing Radiation Metrology Laboratory (LMRI), performed advanced research field metrology, using standard...
The decommissioning or refurbishing processes of nuclear facilities result in significant amounts radioactive wastes. Radiological characterization is essential to ensure safe handling, transportation, and disposal these wastes includes the assessment radioactivity levels types materials present paper presents tritium activity determination used titanium tritide targets from different decommissioned Măgurele Area – Romania. content tritiated involves use Total Combustion technique coupled...
The Tritium Laboratory at Horia Hulubei National Institute for Physics and Nuclear Engineering was initially licensed in 1976 completely refurbished 2011 as a unique isotope laboratory focused on tritium handling processing to conduct variety of scientific experiments. During renovation, different types solid radioactive waste or potential contaminated with were created: bricks, mortars, cements, false ceiling (polyvinyl chloride), linoleum, rubber, etc.In order fulfill all the requirements...
The behaviour of Polytetrauoroethylene (PTFE), NAFION ionomer membranes and VITON uoroelastomer in presence high activity tritiated water (HTO) was analysed.Radiolytic stability the uoropolymersHTO system analysed by: (a) Simulation radiolytic processes by quantum mechanical methods, (b) eects exposure uoropolymers immersed H2O to 60 Co gamma radiation eld, (c) Immersing samples HTO with activity, for dierent time periods.In both cases were characterized FT IR ATR, study emission uoride ions...
The purpose of the present paper consists in finding a more efficient and less expensive decontamination method for surfaces contaminated with Tritium-labelled compounds, being able to provide information nuclear field specialists. This studies polymeric hydrogel DeconGel, presenting methods facilities used, as well obtained results from experiments tests. factor DeconGel type 1108 analysed (contaminated mixture tritium labelled compounds) can take values range 76%-93%, while case 1102...
The procedures and facilities necessary for performing endurance tests of hydrophobic catalysts have been designed.The were carried out in real operational conditions using 2 stands with recirculation tritiated water at constant temperature on catalyst bed. Radio-induced alterations studied by pH determination fluoride ion presence samples water. In the polymeric support radio-induced modifications analyzed FTIR ATR spectrometry extractable fractions. swelling degree has also estimated. 6...
ABSTRACT Generally, 14 C is produced in all types of reactors, mainly through neutron-induced reactions with isotopes carbon, nitrogen, and oxygen. These are present the fuel, fuel cladding, coolant, moderator, structural materials reactor. Irradiated graphite contains a range activation products but, from point view geological disposal, another radionuclide which has to be taken into account tritium ( 3 H or T), neutron induced reaction Li(n,α)T. In this study we have investigated release...
Radiocarbon dating of archaeological bones may sometimes provide erroneous data when they contain contaminants having exogenous carbon. To solve this problem, in RoAMS Laboratory from IFIN-HH, individual amino acids was achieved. First results obtained for acid standards show that the ages were concordance with those Hertelendi Laboratory, Hungary. More, comparison between some bone collagen and age same bulk confirmed separation by high performance liquid chromatography (HPLC) method...
Annual tritium exposures can be reconstructed for long time periods by analyzing radioactive concentrations in tree rings near nuclear facilities that release tritiated water (HTO) to the environment. Since mass of analyzed samples is on order milligrams, usual methods such as liquid scintillation counting cannot applied. The recommended method comprises thermal decomposition milligram-sized samples, reduction resulting HTO hydrogen, quantitative absorption titanium hydride (TiHT) powder,...