A novel growth method for diamond nano-tips on porous anodic alumina (PAA) by hot filament chemical vapor deposition has been investigated for the first time. Before diamond film deposition could be carried out, nano-diamond particles were deposited onto the pore surface of PAA by electrophoretic deposition at the nucleation sites. Diamond nano-tips were then successfully formed by the shape of porous alumina. The results show that a diamond nano-tip with a smaller radius has superior effects of field emission. Its threshold field and current density are 1.2 V µm(-1) and 4.0 mA cm(-2), respectively, for the case of a tip radius of about 20-30 nm.
In this paper, we consider the implementation of different Zadoff-Chu sequences to different modulation levels in communication systems with multiple modulation levels. The base station of the system can dynamically estimate the number of users in each modulation level by detecting the Zadoff-Chu sequences it receives. The base station then calculates the throughput of each modulation level and determines if any modulation level is saturated. If a modulation level is saturated, then the base station implements an additional mechanism on the users in the modulation level with the largest throughput. This mechanism makes users enter a waiting period before allowing further data transmissions so as to mitigate or reduce the base station load to accomplish the tasks and functions of the self-organizing network.
likely an under diagnosed condition. While ejaculatory dysfunction is known to accompany alpha blocker use, the association with ED suggests a population who can be queried for symptoms and offered treatment options given that many men are bothered by DE.
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