Yuan J.-Y.,CAS Beijing National Laboratory for Molecular |
Yuan J.-Y.,Huanghe Science and Technology College |
Xu H.-G.,CAS Beijing National Laboratory for Molecular |
Zheng W.-J.,CAS Beijing National Laboratory for Molecular
Physical Chemistry Chemical Physics | Year: 2014
ConC2- (n = 1-5) cluster anions were investigated using anion photoelectron spectroscopy. The adiabatic detachment energies (ADEs) and the vertical detachment energies (VDEs) of the Co nC2- (n = 1-5) cluster anions were determined from their photoelectron spectra. Density functional calculations were performed for the ConC2 (n = 1-5) cluster anions and neutrals. Our studies show that the structures of ConC2- (n = 1-5) can be described as attaching C2 to the top sites, bridge sites, or hollow sites of the Con clusters. The C2 retains an integral structure unit in the ConC2 (n = 1-5) cluster anions and neutrals, rather than being separated by the Con clusters. The C2 unit in the ConC2 (n = 1-5) cluster anions and neutrals has the characteristics of a double-bond. © 2014 the Owner Societies.
Zhang R.,Huanghe Science and Technology College
Nonlinear Dynamics | Year: 2013
In this paper, a three-dimensional autonomous nonlinear system called the T system which has potential application in secure communications is considered. Regarding the delay as parameter, we investigate the effect of delay on the dynamics of T system with delayed feedback. Firstly, by employing the polynomial theorem to analyze the distribution of the roots to the associated characteristic equation, the conditions of ensuring the existence of Hopf bifurcation are given. Secondly, by using the normal form theory and center manifold argument, we derive the explicit formulas determining the stability, direction and other properties of bifurcating periodic solutions. Finally, we give several numerical simulations, which indicate that when the delay passes through certain critical values, chaotic oscillation is converted into a stable steady state or a periodic orbit. © 2013 Springer Science+Business Media Dordrecht.
Shao K.,Huanghe Science and Technology College
Energy Procedia | Year: 2011
Wireless Sensor Networks (WSN) produce a large amount of data that need to be processed, delivered and assessed according to the application objectives. A WSN may be designed to monitor the working state of power transformer timely, efficiently and remotely by virtue of the sensor nodes placed in transformer oil, gathering the real-time data of the dissolved multi-component gases in oil. The way these data are manipulated by the sensor nodes is a fundamental issue and information fusion arises to process data gathered by sensor nodes and benefits from their processing capability. This paper presents a novel method to diagnose transformer fault making comprehensive use of extension theory and multivariate optimization of fusion theory, which can effectively and intelligently diagnose transformer fault types, providing more convenience for the workers on remote monitoring and improving the intelligent degree of the fault diagnosis. © 2011 Published by Elsevier Ltd.
Hu A.,Huanghe Science and Technology College
Proceedings - 4th International Congress on Image and Signal Processing, CISP 2011 | Year: 2011
According to the hidden danger of environmental security in substations, by combining with the characteristics of wireless sensor network (WSN), this paper aims at analyzing the application of WSN in monitoring the environmental parameters and equipment conditions in substation. And the structure of the monitoring system is proposed. The system is useful to the substation. © 2011 IEEE.
Li K.,Huanghe Science and Technology College |
Yang S.,Henan University of Technology
Pakistan Journal of Pharmaceutical Sciences | Year: 2014
In present study, we prepared a novel galantamine hydro bromide sustained-release capsules with the new manufacturing technology, extrusion-spheronization method, and the optimized preparative formulation. A simple, rapid and accurate high performance liquid chromatography method (HPLC) was developed and validated for the quantification and release evaluation of galantamine hydro bromide. Experimental results showed that the method was specific, sensitive and reliable, could be effectively applied to the in vitro release study of galantamine hydro bromide sustained-release capsules. Our resulting samples had superior properties, worked better as sustained-release carriers and lasted longer hours to release drugs compared with the marketed control, Razadyne ER. The in vitro releasing characteristics of different batches of preparations are quite similar with each other, the total release proportions of galantamine hydro bromide from sustained-release capsules reached higher than 90% within 12 h. The testing sustained-release preparation may be a promising new product for curing the related diseases.