28 research outputs found
NMR STUDIES OF LIQUID Cs-I SOLUTIONS
No full textThe metal-nonmetal transition in liquid Cs-I solutions has been investigated by 133Cs and 127I NMR over the range from pure Cs to approximately CsI2. With increasing I concentrations in Cs, we observe a sharp decrease of the 133Cs Knight shift until for stoichiometric CsI and I-rich solutions only a small chemical shift is observed. 127I shifts indicate substantial penetration of conduction electron charge to the nuclei of I- ions in Cs-rich solutions. The 133Cs spin-lattice relaxation rates reveal a gradual breakdown of nearly-free-electron conditions and progressively stronger localization as I is added to Cs. Below a few per cent excess Cs in CsI the data indicate formation of localized states whose structure is analogous to F-centers
The use of unmanned aerial vehicles (UAVs) for engineering geology applications
No full textThis paper represents the result of the IAEG C35 Commission "Monitoring methods and approaches in engineering geology applications" workgroup aimed to describe a general overview of unmanned aerial vehicles (UAVs) and their potentiality in several engineering geology applications. The use of UAV has progressively increased in the last decade and nowadays started to be considered a standard research instrument for the acquisition of images and other information on demand over an area of interest. UAV represents a cheap and fast solution for the on-demand acquisition of detailed images of an area of interest and the creation of detailed 3D models and orthophoto. The use of these systems required a good background of data processing and a good drone pilot ability for the management of the flight mission in particular in a complex environment
MAGNETIC SUSCEPTIBILITY OF LIQUID ALLOYS Na-Sb, Na-Bi, Li-Sb, Li-Bi AND Li-Pb
No full textThe dc magnetic susceptibility of the liquid alloys Na-Sb, Na-Bi, Li-Sb, Li-Bi and Li-Pb was measured. Na-Sb, Na-Bi, Li-Sb and Li-Bi exhibit a strong variation in the susceptibility depending upon composition, with a metal-to-semiconductor transition near the stoichiometric composition (Na3Sb, Na3Bi, Li3Sb, Li3Bi). At the stoichiometric composition, a relatively strong diamagnetic minimum was found in these alloys. In addition the susceptibility of Li-Pb shows a minimum at the stoichiometric composition Li4Pb, but less pronounced than in the other alloys
Resolution of the Conductivity Dilemma in Liquid Solutions of Alkali Metals in Alkali Halides
No full text
