Authors:M. Zheng, L. Zhang, H. P. Teng, J. Hu, and M. L. Hu
, Li Y. S. , Tian Y. Y. , et al. ( 2014 ), Effect of blade installation angle on power efficiency of resistance type VAWT by CFD study . International Journal of Energy and Environmental Engineering , 6 ( 1 ), 1 – 7
Authors:Mengyang Wu, Honghao He, and Bálint Bachmann
connection according to surrounding texture ( Source : designed by M. Wu and H. He) 2.3 Put in orderly modular installations according to local conditions The method is based on introducing from the outside and diverging from the inside. Modular combination
), the increase of the heat source temperature goes together with the increase in installation costs. This cost increase is justified only when it is associated with proper efficiency increase; in the vicinity of the critical temperature, it is not
Authors:I. Gonçalves, A. Ramalho, I. Gonçalves, J. Salgado, J. Pertusa, A. Irles, F. Mascarenhas, M. Castro, F. Valle, J. Rico, and V. Alcober
The goal of this work is to pursue the research activity in BNC and the installation of a therapy facility in the position
presently occupied by the thermal column. With these objectives the experimental studies in mice and cells are continuing
while improvements in the facilities are created or prepared. For this effect: (1) the installation of lead shield in the
vertical access of the thermal column, which resulted in an enhancement of the Φth toDγ ratio, was performed, (2) the adaptation of a beam tube to deliver a dominantly thermal or epithermal beam in two possible
beam openings is being done and (3) Monte Carlo calculations aiming at the optimization of the conditions for the therapy
installation are in progress.
The least expensive chemical methods of stable isotope separation are discussed. Between them are especially known chemical exchanges used for separation of boron, nitrogen and sulfur isotopes, low temperature rectification applied for enriching rare isotopes of carbon and oxygen and cryogenic adsorption served for obtaining very pure deuterium. The most important characteristics of installations, processes and working conditions are represented.
Authors:V. Ivanenko, V. Kovalenko, V. Kustov, A. Grigorev, and A. Metelev
Results of development of nuclear-physical research installations and methods of ocean bottom sediments analysis using radionuclide sources of neutron, gamma and X-ray radiations are presented. Practical applications of the above developments in expeditionary conditions aboard research vessels are summarized.
Authors:J. Garcia Alonso, D. Thoby-Schultzendorff, B. Giovannone, and L. Koch
Inductively Coupled Plasma Mass Spectrometry ICP-MS has been applied to the characterisation of various nuclear waste forms. Long-lived radionuclides can be determined with similar sensitivities. The installation of an ICP-MS in a glove box and applications and limitations of the methods to nuclear materials, with especial emphasis on isobaric interferences are described.
The paper considers the analytical procedure for determination of U and Th isotopes in environmental samples for those cases when coincentrations are on the background levells. The technique includes preconcentration operations with the use of ion-exchange and electrodeposition with the aim to obtain preparations for alpha-spectrometry. The preconcentration allows to use less complicated alpha-spectrometric installations.
The installation of a multi-sample beta-gamma coincidence spectrometer in an underground laboratory with a rock covering of 47 m yielded further background reduction by factors of between 10 (at 2 MeV) and about 4 (below 1 MeV). In silicon samples Fe can be measured by neutron activation analysis with a detection limit of 40 pg.