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Samples of OMC (ordered mesoporous carbon) and xNiO (x=0.01, 0.12, 0.04)/C composites were prepared by microwave assisted synthesis. X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), transmission electron microscopy (TEM), nitrogen adsorption, inductively coupled plasma (ICP) and cyclic voltammetry (CV) were employed to characterize the physical and chemical properties of the samples...
Mineral processing is a main course of the major of mineral processing engineering. Curriculum reform was carried out on the settings of teaching content and teaching methods. On the base of original theory curriculum, practice teaching was carried out to help students learn the course better, and especially help them improve their practice ability, so the teaching effect was significantly improved.
According to the channel pulse response of double-cluster arrival phenomena, measured by actual mine UWB (ultrawide band), the IEEE 802.15.3a indoor multipath model is modified to the LOS double-cluster semi-deterministic statistical model. The determinate part of the model depends on the propagation environments, which makes effective use of geometric parameters data of specific environments, and...
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