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447 results on '"Li, Hai-bin"'

114. Ground State Properties for Bose-Condensed Gas in Anisotropic Traps

Author

LI Hai-Bin, Wang Dong-mei, Li Zhen, Xin Xiao-Tian, and Xu Zhijun

Subjects
Condensed Matter::Quantum Gases, Physics, Condensed Matter::Other, General Physics and Astronomy, Harmonic (mathematics), symbols.namesake, Distribution (mathematics), Variational method, Quantum mechanics, symbols, Anisotropy, Ground state, Wave function, Nonlinear Schrödinger equation, Energy functional
Abstract

Based on the energy functional and variational method, we present a new method to investigate the ground state properties for a weakly interacting Bose-condensed gas in an anisotropic harmonic trap at zero temperature. With this method we are able to find the analytic expression of the ground-state wavefunction and to explore the relevant quantities, such as energy, chemical potential, and the aspect ratio of the velocity distribution. These results agree well with previous ground state numerical solutions of the Gross–Pitaevskii equation given by Dalfovo et al. [Phys. Rev. A 53 (1996) 2477] This new method is simple compared to other methods used to solve numerically the Gross–Pitaevskii equation, and one can obtain analytic and reliable results.

Published
2006
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115. Thermodynamic Analysis and Experimental Study of Nitrongen Migration during the Sludge Chemical Looping Gasification Using Iron-Based Oxygen Carriers.

Author

DENG Zheng-bing, HUANG Zhen, ZHENG An-qing, HE Fang, WEI Guo-qiang, ZHAO Zeng-li, and LI Hai-bin

Abstract

Based on the Gibbs free energy minimization principle, thermodynamic analysis and process simulation of the redox reactions between the NOx precursors (NH3 and HCN) and Fe2O3 (oxygen carrier) during the sludge chemical looping gasification were performed using the software of HSC Chemistry 6.0. According to the content of NOx precursors during the sludge pyrolysis, the effect of the molar ratio of oxygen carrier to the sludge (OC/SS) on the oxidation of NH3, HCN, and the mixed gas of NH3 and HCN were investigated. The simulation results showed that the oxidation of NOx precursors was effectively promoted by Fe2O3, the N element was mainly converted to N2 and almost no NOx was formed. The OC/SS ratio of 0.02, 0.04, and 0.05 were determined to achieve the complete conversion of NOx precursors as well as minimize the amount of oxygen carrier when the NH3, HCN, and the mixed gas of NH3 and HCN were used as the reductants, respectively. Additionally, the oxidation rate of HCN was higher than that of NH3 due to the stronger reducibility of HCN. Furthermore, the yields of NOx precursors during the sludge pyrolysis and the sludge chemical looping gasification were compared in a fixed bed. It was found that the yields of NOx precursors in the flue gas were significantly reduced by Fe2O3, and the yields of HCN and NH3 decreased by 62% and 32%, respectively. The thermodynamic analysis was validated by the experiment results, and the chemical looping gasification of sludge was beneficial to inhibit the generation of the NOx. [ABSTRACT FROM AUTHOR]

Published
2019
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116. Effect of Citric Acid Concentration on the Properties of Borate Glass Bone Cement

Author

WU Ying-Ying, Yao Ai-Hua, Ye Song, Wang Deping, and LI Hai-Bin

Subjects
Materials science, 020502 materials, Borate glass, 02 engineering and technology, Bone cement, Inorganic Chemistry, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, 0205 materials engineering, chemistry, 030220 oncology & carcinogenesis, General Materials Science, Citric acid, Nuclear chemistry
Published
2017
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117. Effect of Gas-foaming Porogen-NaHCO$lt;inf$gt;3$lt;/inf$gt; and Citric Acid on the Properties of Injectable Macroporous Borate Bioactive Glass Cement

Author

Jia Wei-tao, Wang Deping, LI Hai-Bin, Ye Song, Yao Ai-Hua, Huang Wen-hai, and WU Ying-Ying

Subjects
0301 basic medicine, Gas foaming, Cement, Materials science, chemistry.chemical_element, 02 engineering and technology, 021001 nanoscience & nanotechnology, law.invention, Inorganic Chemistry, 03 medical and health sciences, chemistry.chemical_compound, 030104 developmental biology, chemistry, Chemical engineering, law, Bioactive glass, General Materials Science, Composite material, 0210 nano-technology, Boron, Citric acid
Published
2017
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125. Liver Transplantation Using a Graft from a Donor with Situs Inversus Totalis: A Case Report and Review of the Literature

Author

Sun, Xu-Yong, Qin, Ke, Dong, Jian-Hui, Li, Hai-Bin, Lan, Liu-Gen, Huang, Ying, Cao, Song, and Li, Zhuang-Jiang

Subjects
congenital, hereditary, and neonatal diseases and abnormalities, surgical procedures, operative, Article Subject, otorhinolaryngologic diseases
Abstract

It is critical to effectively use every available organ to meet the increasing demands for liver transplantation. Situs inversus is a rare congenital anomaly caused by obstruction of viscus rotation during embryonic development. Situs inversus was once regarded as a contraindication to liver transplantation because of the technical difficulties associated with the unique vascular anatomy and concern about achieving accurate graft positioning. Here, we present a successful case of liver transplantation using a graft from a donor with situs inversus totalis. The related experience will contribute to opening up new realms for the use of such rare organ resources.

Published
2013
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138. Error Mensuration of Temperature Coefficient between Formation Flying Small Satellites TT&C Equipment

Author

Guo Jun-yan, Li Hai-bin Guo Jun-yan, and Liu Hai-ming

Subjects
Physics, Temperature control, Control theory, Error analysis, Temperature coefficient, Noise (electronics), Temperature measurement, Synchronization, Compensation (engineering)
Abstract

The precise mensuration is needed between the formation flying small satellites, where temperature change results in error measurement. It is a hard problem to compensate the error caused by temperature change. In this paper, we propose a new error mensuration method for the temperature coefficient, which can implement the mensuration of temperature coefficient under the observe noise. This will help to the precise compensation of measuration and synchronization. The simulation results show that the proposed algorithm can achieve the measurement of the temperature coefficient on satellites.

Published
2009
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149. Hopf bifurcation control for a coupled nonlinear relative rotation system with time-delay feedbacks

Author

Li Xue, Tan Shu-Xian, Li Hai-Bin, and Liu Shuang

Subjects
Physics, Nonlinear dynamical systems, Hopf bifurcation, Nonlinear system, symbols.namesake, Relative rotation, Mathematical analysis, symbols, General Physics and Astronomy, Perturbation (astronomy), Primary resonance, Biological applications of bifurcation theory, Excitation
Abstract

This paper investigates the Hopf bifurcations resulting from time delay in a coupled relative-rotation system with time-delay feedbacks. Firstly, considering external excitation, the dynamical equation of relative rotation nonlinear dynamical system with primary resonance and 1:1 internal resonance under time-delay feedbacks is deduced. Secondly, the averaging equation is obtained by the multiple scales method. The periodic solution in a closed form is presented by a perturbation approach. At last, numerical simulations confirm that time-delay theoretical analyses have influence on the Hopf bifurcation point and the stability of periodic solution.

Published
2014
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