Zhimeng
Zhimeng Guo, Beijing CN
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20130236349 | INDUSTRIAL METHOD FOR PRODUCING DISPERSION-STRENGTHENED IRON-BASED MATERIALS AT LOW COST AND IN LARGE-SCALE - The invention provides an industrial method for producing dispersion-strengthened iron-based materials at low cost and in large-scale. The industrial acid pickling waste solution is treated by spray roasting process after yttrium chloride is added. During the spray roasting process, the solution is atomized into fine droplets, the droplets are contacted with gas and dried into powders, which are heated in air to form metal oxides. The mixed powders of the metal oxides are reduced in hydrogen stream to obtain yttria dispersion-strengthened iron powders. High performance dispersion-strengthened iron materials are obtained by densifying the yttria dispersion-strengthened iron powders. The method has simple process and low cost, and is suitable for large-scale production due to the direct use of acid pickling waste solution from steel factory. | 09-12-2013 |
Zhimeng Liu, Dongguan City CN
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20090111934 | Method for preparing aqueous polyacrylate modified polyurethane dispersions - A novel method for the preparation of an aqueous polyacrylate modified polyurethane dispersion is disclosed. The preparation method includes three main steps: | 04-30-2009 |
Zhimeng Xu, Fuzhou CN
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20130058381 | NONLINEAR SIGNAL PROCESSING METHOD AND APPARATUS FOR PULSED-BASED ULTRA-WIDEBAND SYSTEM - A method and apparatus are provided for processing a received pulsed-based ultra-wideband (UWB) signal before the signal is demodulated by an energy detection based receiver. A nonlinear signal processing unit contains one or multiple subunits, and each subunit consists of a nonlinear device and a filter. The nonlinear devices can be any devices that can shift signal, noise, and interference spectra in a nonlinear fashion, and include but are not limited to square law devices and Teager-Kaiser operators. By applying the nonlinear signal processing unit on the received UWB signal, a major part of the energy of noise and narrowband interferences is shifted to specific frequency ranges and then removed by the appropriate filter(s) in the nonlinear signal processing unit. Thus, the signal-to-noise-plus-interference ratio (SNIR) of the received UWB signal can be improved. | 03-07-2013 |