X.-F. Zhang

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Through control of the grain-boundary structure, principally in the nature of the nanoscale intergranular films, a silicon carbide with a fracture toughness as high as 9.1 MPa.m has been developed by hot pressing β-SiC powder with aluminum, boron, and carbon additions (ABC-SiC). Central in this material development has been systematic transmission electron(More)
An environment of inhabited region is composed of natural and socio-economic environment, so it should be analyzed from the factors of the two aspects. In this paper, we proposed an integrated assessment index system based on the super-entity immune network model. Considering various factors' influence and their interactions, the model achieves quantitative(More)
To clarify the mechanism for the endothelin-1 (ET-1)-induced release of catecholamines from the adrenal gland, we examined the effects of removal of extracellular Ca2+, blockers of L-, N-, P- and Q-types of voltage-operated Ca2+ channels (VOCC) such as nifedipine (L-type), ω-conotoxin GVIA (N-type), ω-agatoxin IVA (P-type) and ω-conotoxin MVIIC (Q-type) and(More)
The frequency difference between signal-under-test and reference signal in phase demodulation will affect the result of the actual phase noise measurement. In order to eliminate the effect, an algorithm for both eliminating the frequency difference and extracting the phase noise of the signal-under-test is presented. Simulation and experiment results show(More)
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