Vertically aligned perfectly hexagonal-shaped ZnO nanoprisms have been grown on a Si(100) substrate via a noncatalytic thermal evaporation process by using metallic zinc powder in the presence of oxygen gas. The as-grown nanoprisms consist of ultra smooth Zn-terminated (0001) facets bounded with the {0110} surfaces. The as-synthesized products are single-crystalline with the wurtzite hexagonal phase and grown along the [0001] direction, as confirmed from the detailed structural investigations. The presence of a sharp and strong nonpolar optical phonon high-E2 mode at 437 cm(-1) in the Raman scattering spectrum further confirms good crystallinity and wurtzite hexagonal phase for the as-grown products. The as-grown nanoprisms exhibit a strong near-band-edge emission with a very weak deep-level emission in the room-temperature and low-temperature photoluminescence measurements, confirming good optical properties for the deposited products. Moreover, systematic time-dependent experiments were also performed to determine the growth process of the grown vertically aligned nanoprisms.

No abstract

This study sets the scene for further research to investigate the relationship between gastric mucosal nerves and autonomic neuropathy or diabetic peripheral neuropathy.

No abstract

This case report presents spontaneous resolution of acute rejection in a 66-year-old man who underwent a kidney transplant and developed acute rejection and pneumonia. Our main concern in this case was how to treat the concurrent infection while maintaining the immunosuppressive therapy with a narrow available therapeutic range, in order to save the renal allograft without increasing antirejection therapy.