Xuzhou Institute of Technology

About: Xuzhou Institute of Technology is a education organization based out in Xuzhou, China. It is known for research contribution in the topics: Catalysis & Computer science. The organization has 1696 authors who have published 1521 publications receiving 13541 citations.

Weighted Differentiation Composition Operators from Mixed-Norm to Zygmund Spaces

Abstract: Let ϕ be an analytic self-map of the unit disk 𝔻, H(𝔻) the space of analytic functions on 𝔻 and u ∈ H(𝔻). The boundedness and compactness of the weighted differentiation composition operator , where n ∈ ℕ0, from mixed-norm space to the Zygmund spaces, and the little Zygmund spaces are investigated in this article.

Fluorine and nitrogen co-doped mesoporous carbon derived from polytetrafluoroethylene@melamine sponge for supercapacitor application

Abstract: By using polytetrafluoroethylene@melamine sponge composite as the precursor, a nitrogen and fluorine co-doped porous carbon is prepared via a chemical etching process. The specific surface area and total volume of the mesoporous carbon are 1799 m2 g−1 and 1.48 m3 g−1, respectively. The doping amount of the fluoride and nitrogen in the resulting co-doped carbon is determined to be 1.2 at.% and 2.7 at.%, respectively. In a three-electrode system in 6 M KOH electrolyte, when mass loading of active material is 4 and 6 mg, electrodes deliver specific capacitances of 299 and 284 F g−1 at a current density of 1 A g−1, respectively. In a symmetric-electrode system in the same electrolyte, an electrode shows the specific capacitance of 233 F g−1 at the same current density. In aqueous electrolyte, the assembled simulated supercapacitor reaps a maximum specific energy of 8.3 W h kg−1 at a specific power of 101 W kg−1. Under the current density of 5 A g−1, after 6000 cycles, the 94.1% remaining capacitance indicates a good cycle stability. Findings demonstrate the synthesized fluorine and nitrogen co-doped porous carbon can be used as electroactive material for high-performance supercapacitor.

Modeling and Kinematics Simulation of a Mecanum Wheel Platform in RecurDyn

Abstract: The innovative method of modeling and kinematics simulation in RecurDyn are proposed, taking a Mecanum wheel platform(MWP) for omnidirectional wheelchair as research object In order to study the motion characteristics and mobile performance of the MWP, the virtual prototype simulation model is established in SolidWorks, and virtual prototype simulation is carried out in RecurDyn The experience of simulation for the MWP in RecurDyn is introduced, and the simulation steps and points for attention are described detailedly The working states of the mobile system in real environment have been simulated through virtual simulation experiments Four typical motion models including moving forward, moving laterally, moving laterally in the direction of 45°, and rotation have been simulated in RecurDyn The simulation results exactly reflect the motion of the MWP By comparing the simulation results with the theoretical results, there are acceptable errors that are relatively less overall in the simulation results The simulation results can be used to predict the performance of the platform and evaluate the design rationality, and design quality can be improved according to the exposed problem This paper can provide reference for the simulation of mobile platform by using RecurDyn