Wang F.,Xinyu University |
Wang F.,Nanchang University |
Liu Y.,Nanchang University
Materials and Design | Year: 2014
The purpose of the present work was to investigate and compare the mechanical and tribological behaviors of ceramic-matrix friction material (CMFM) with steel fiber (SF), mullite fiber (MF), and mixing SF and MF. The CMFM was prepared by hot-pressing sintering, and the tribological behaviors were determined using a constant speed friction tester. The worn surfaces and wear debris were observed by a scanning electron microscopy (SEM). Experiment results show that the combination of SF and MF can improve the mechanical properties that each single fiber does not have. The sever fade for the specimen reinforced by single MF during the whole friction testing can be attributed to the poor interface cohesive strength between MF and matrix. Mixing the SF and MF can improve the friction stability, and the friction coefficients for friction material with a mixture of the SF and MF increases with increasing MF content. For all specimens, increasing in the friction temperatures result in the increase of wear rates. © 2014 Elsevier Ltd.
Liu J.,Xinyu University
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy | Year: 2015
Abstract 2,6-Di(1H-benzo[d]imidazol-2-yl)pyridine (DBIP) was synthesized. The single-crystal structure of DBIP was resolved. DBIP-based OLED was fabricated. The electroluminescence for the device corresponds to a pure white emission. In addition, thermal stability, UV-vis, photoluminescence and electrochemical behaviors of DBIP were investigated as well. © 2015 Elsevier B.V. All rights reserved.
Zou G.,Xinyu University
Advance Journal of Food Science and Technology | Year: 2015
The study uses input-output method to analyze the food enterprise consumption efficiency of Logistics industry to enhance the competitiveness of food manufacturers, to improve the management level of food manufacturers, so as to provide the decision support for the food manufactures competition. Some countermeasure and suggestion were put forward in order to improve indirect food logistics consumption efficiency and direct consumption efficiency of food Logistics. © Maxwell Scientific Organization, 2015.
Zhang F.-Y.,Xinyu University
Guangzi Xuebao/Acta Photonica Sinica | Year: 2012
Optical properties of trap pit morphology of multicrystalline silicon (weaklyetched, normaletched and heavyetched) were simulated by solving the Maxwell and material equations, using RF MODULE of COMSOL Multiphysics version 3.5a. The varying laws of surface electric field a component, surface magnetic field y component and reflectivity of three kinds of trap pits were obtained. It is indicated that the value of surface electric field z component and surface magnetic field y component of weaklyetched trap pit is the least, and its reflectivity is the highest (about 35%) at wavelengh of 600 nm; followed by that of normaletched trap pit, its reflectivity is about 17%; the value of surface electric field z component and surface magnetic field y component of heavyetched trap pit is the most, its reflectivity is the lowest (about 10%). Compared the experimental date with the simulation results, change trend of numerical simulation results are accorded with that of experimental ones, which provided for the practice production of acidic texturing of multicrystalline silicon as theory bases.
Qiuxiang T.,Xinyu University
Advances in Information Sciences and Service Sciences | Year: 2012
We present in this paper a conception of DCSK modulator, our subject is to optimise our modulator to implement it in specific circuit. We present a new application of DCSK modulation in image transmission. We introduce also this modulator with coherent detection algorithm. We have presented a comparison between BPSK and DCSK. This is due to the fact that traditional encryption is based on discrete number theory. In this paper we study the performance of Differential Chaos Shift Key (DCSK) modulation and we compare it to BPSK modulation, a new application of DCSK modulation is presented (transmission of the image).