RESUMO
Structural information of nanostructures plays a key role in synthesis of novel nano-sized materials for promising applications such as high-performance nanoelectronics and nanophotonics. In this study, we apply for the first time the state-of-the-art coherent diffractive imaging method to characterize the structure of graphite nanoparticles. A sample with nanographites on a Si3N4 support was exposed to 30 nm radiation from a tabletop laser-driven high-order harmonic generation extreme ultraviolet (EUV) source. From the measured far-field diffraction pattern, we were able to reconstruct the distribution of the graphite nanoparticles with a spatial resolution of â¼330 nm using the standard iterative phase retrieval algorithms. A closer look at the reconstructed images reveals possible absorption effects of graphite nanoparticles. This experiment demonstrates the first step towards wide-field and high-resolution imaging of nuclear materials using the newly established lab-scale EUV source. Having such a source opens the door to performing investigations of nuclear graphite and other radioactive material in the lab, thus avoiding the need to transport samples to external facilities.
RESUMO
New method of treatment of trigeminal neuralgia by percutaneous injection of boiling saline into the cavum trigeminale in replacement of the former Frazier’s operation. 71 cases with aged of 20-80 in which 69 cases the territories of the 2nd and the 3rd division of the 5th nerve were involved. The technique of the procedure is described in detail. It did not require stereotactic facilities or X-rays control of the position of the needle during its introduction intothe Meckel’s cave through the Foramen Ovale. One or two injections of 2 ml of boiling saline were necessary for an instant relief of pain. The major complications, well accept by the patients were: hypoesthesia of the affected hemiface and motor hemiparalysis of muscles of mastication, but in a lot of patients they were improving or subsided with the passing of time
