Dr
Frans De Corte
((em.) UGent and FWO-VL, Neerstraat 20, B-9921 Vinderhoute, Belgium)
22/09/2011, 08:30
Nuclear Chemistry and Radiochemistry
oral presentation
In the development of k0-standardized neutron activation analysis (k0-NAA), a number of criteria were identified and worked out both theoretically and practically, that should be taken into account for achieving reliable analysis results. Among these, the ones most frequently considered and reported upon in publications dealing with the implementation and the application of k0-NAA are: i) the...
Dr
Richard Lindstrom
(National Institute of Standards and Technology)
22/09/2011, 08:50
Nuclear Chemistry and Radiochemistry
oral presentation
Accurate nuclear measurements depend on well-controlled experimental and numerical work, both in the execution of daily measurements and in the creation and evaluation of fundamental constants needed to connect the laboratory with the International System of Units. It cannot always be assumed that tabulated data are sufficiently accurate for all routine work. The k0 Nuclear Data Committee has...
Prof.
Sergey Kulyukhin
(Institute of Physical Chemistry and Electrochemistry RAS)
22/09/2011, 09:10
Nuclear Chemistry and Radiochemistry
oral presentation
It is known that the activity of radioactive iodine in the water coolant increases dramatically during the shutdown of reactors on the Russian working WWER- or RBMK-type NPPs. For example, the radioactivity of 131I in the water coolant increased 30 to 200 times during the shutdown of the reactor on the RBMK-type NPP such as the Leningrad and Smolensk NPPs. One of the reasons of this activity...
Prof.
Prof.Dr.Mr.Ashraf Elsayed Mohamed Mohamed
(Institute for Nuclear Materials)
22/09/2011, 09:25
Nuclear Chemistry and Radiochemistry
oral presentation
- Egyptian Nuclear weapons states have developed dedicated safe and secure facilities for nuclear warhead and bombs assembly and disassembly operations .These facilities are critical elements of material nuclear weapons infrastructures .Their broad operational responsibilities include the production of new warheads, the dismantlement of retired warheads ,warhead modernization and...
Dr
Yoshihiro Kitatsuji
(Japan Atomic Energy Agency)
22/09/2011, 09:40
Nuclear Chemistry and Radiochemistry
oral presentation
Some actinide ions such as U, Np and Pu exist stably as trivalent to hexavalent ions in an acidic solution. The adjustment of the oxidation state of these ions to a desired one is inevitable for the efficient chemical separation or the precise determination of them, since chemical reactions such as liquid-liquid distribution and complex formation with ligands depend strongly on the oxidation...
Dr
Oussama Alhassanieh
(Atomic Energy Commission of Syria AECS)
22/09/2011, 09:55
Nuclear Chemistry and Radiochemistry
oral presentation
The behavior of thorium on poly(vinyl pyrrolidone) grafted with citric acid in HCl-media has been investigated using -spectrometry. Various factors has been studied such as: treatment of PVP, concentration of grafted acid, concentration of HCl, concentration of thorium, and contact time. The results have shown that thorium is adsorbed on the resins in high acid concentration (5-7 mol/l HCl)...
Dr
Neeta Lala
(Universiti Malaysia Pahang)
22/09/2011, 10:10
Nuclear Chemistry and Radiochemistry
oral presentation
Abstract
The chemiluminescence (CL) emission spectra of luminol in aqueous sodium hydroxide [Na(OH)2] system has been recorded in presence of hemin using various oxidants. Hydrogen peroxide, potassium ferricyanide, potassium permangnate, and potassium persulphate are the various oxidants used. There is no emission of light observed when potassium persulphate has been used as an oxidant. The...
