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Journal of Landscape Research 2016年第4期8卷 67-72页

作者： ZHANG Lianfen QIAO Wenguo LIU lin CHU Junfeng LI Yong ludong university Yantai Branch of Hope Design

This is a study case of the Ruzi River landscape architecture design of ludong *** to the principles of no-pollution,ecologicalization,culture-orientation,sustain ability,adaptation to local conditions and practicability,the campus is made a place for study and leisure for teachers and students with the application of China's classical garden design techniques such as "opposite scenery", "background image themed scenery", "four seasons landscaping", "landscape levels" and "screen view".Based on this example,this paper has made an in-deep research on landscape architecture design of universities.

关键词： Campus Waterscape Humanistic design

Density Functional Theory Study on the Histidine-assisted Mechanism of Arylamine N-Acetyltransferase Acetylation

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Chinese Journal of Structural Chemistry 2008年第9期27卷 1127-1133页

作者：乔青安高善民靳月庆陈鑫孙孝敏杨传路 School of Chemistry and Materials Science Ludong University Library of ludong university College of Life Science Shandong University School of Physics and Electronic Engineering Ludong University

Arylamine N-acetyltransferases （NATs, EC 2.***.1.5） catalyze the N-acetylation of primary arylamines, and play a key role in the biotransformation and metabolism of drugs, carcinogens, etc. In this paper, three possible reaction mechanisms are investigated and the results indicate that if the acetyl group directly transfers from the donor to the acceptor, the high activation energies will make it hard to obtain the target products. When using histidine to mediate the acetylation process, these energies will drop in the 15-45 kJ/mol range. If the histidine residue is protonated, the corresponding energies will be decreased by about 35-87 kJ/mol. The calculations predict an enzymatic acetylation mechanism that undergoes a thiolate-imidazolium pair, which agrees with the experimental results very well.

关键词： arylamine N-acetyltransferase density functional theory acetyl group transfer histidine-assisted mechanism

Delay-induced firing behavior and transitions in adaptive neuronal networks with two types of synapses

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Science China Chemistry 2013年第2期56卷 222-229页

作者： XU Bo GONG YuBing WANG BaoYing School of Physics and Optoelectronic Engineering Ludong University Library Ludong University

In this paper, we study delay-induced firing behavior and transitions in adaptive Newman-Watts networks of thermosensitive neurons with electrical or chemical synapses. It is found that electrical and chemical synapse time delay-induced firing behavior and transitions differ significantly. In the case of electrical synapses, the bursts for a fixed delay involve equal number of spikes in each burst, and for certain time delays the firing can be inhibited. However, in the case of chemical synapses the bursts for a fixed delay involve different numbers of spikes in each burst, and no firing inhibition is observed. It is also shown that larger growth rates of adaptive coupling strength or larger network randomness can enhance the synchronization of bursting in the case of electrical synapses but reduce it in the case of chemical synapses. These results show that electrical and chemical synapses have different effects on delay-induced firing behavior and dynamical evolution. Compared to electrical synapses, chemical synapses might be more beneficial to the generation of firing and abundant firing transitions in adaptive and delayed neuronal networks. These findings can help to better understand different firing behaviors in neuronal networks with electrical and chemical synapses.

关键词： neuron electrical synapse chemical synapse Newman–Watts network adaptive coupling time delay firing transition

Theoretical study on the complexes of He,Ne and Ar

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Chinese Physics B 2010年第12期19卷 161-167页

作者：童小菲杨传路肖静王美山马晓光 School of Physics Ludong University

This paper investigates the effect of basis sets through the potential energy curves （PECs） of six rare gas complexes He2, Ne2, Ar2, HeiNe, He-Ar, and Ne-Ar. The coupled cluster singles and doubles method with perturbative treatment of triple excitations, doubly augmented basis sets of d-aug-cc-pVQZ, bond functions, and basis set superposition errors are employed. The diffuse function is more effective than the polarization function on describing the dissociation energy. The PECs are fitted into analytical potential energy functions （APEFs） using three expressions. It is found that all the expressions are suitable for describing the complexes of rare gases. Based on these APEFs, the spectroscopic parameters are calculated and the results are compared with the theoretical and experimental data available in the literature.

关键词： potential energy curve analytical potential energy function spectroscopic parameter

Magnetic field effect in photodetachment from negative ion in electric field near metal surface

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Chinese Physics B 2011年第6期20卷 224-229页

作者：唐田田王德华黄凯云王姗姗 College of Physics Ludong University

Based on the closed-orbit theory, the magnetic field effect in the photodetachment of negative ion in the electric field near a metal surface is studied for the first time. The results show that the magnetic field can produce a significant effect on the photodetachment of negative ion near a metal surface. Besides the closed orbits previously found by Duet al. for the H in the electric field near a metal surface （J. Phys. B 43 035002 （2010））, some additional closed orbits are produced due to the effect of magnetic field. For a given ion surface distance and an electric field strength, the cross section depends sensitively on the magnetic field strength. As the magnetic field strength is very small, its influence can be neglected. With the increase of the magnetic field strength, the number of the closed orbits increases greatly and the oscillation in the cross section becomes much more complex. Therefore we can control the photodetachment cross section of the negative ion by changing the magnetic field strength. We hope that our results may guide future experimental studies for the photodetachment process of negative ion in the presence of external fields and surfaces.

关键词： photodetachment closed-orbit theory magnetic field effect metal surface

Photoabsorption cross sections of the alkaline-earth-metal elements under strong interaction conditions

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Chinese Physics B 2011年第6期20卷 441-446页

作者：刘萌萌马晓光 Department of Physics Ludong University

The strong interatomic interaction effects on photoabsorption cross sections of a private atom have been interpreted by the contribution of both the real and imaginary parts of atomic polarizability in the present work. Some unresolved differences between the photoabsorption cross sections of isolated atoms and those of condensed atoms, especially near thresholds and resonances, probably could be interpreted by the competition between the imaginary and real parts of atomic frequency-dependent polarizabilities.

关键词： condensed-phase photoabsorption complex polarizability alkaline-earth-metal elements

Tight focus of a radially polarized and amplitudemodulated annular multi-Gaussian beam

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Chinese Physics B 2011年第11期20卷 291-295页

作者：陈建农徐钦峰王刚 School of Physics Ludong University School of Electrical and Electronic Engineering Ludong University

The focusing of a radially polarized beam without annular apodization ora phase filter at the entrance pupil of the objective results in a wide focus and low purity of the longitudinally polarized component. However, the presence of a physical annular apodization or phase filter makes some applications more difficult or even impossible. We propose a radially polarized and amplitude-modulated annular multi-Gaussian beam mode. Numerical simulation shows that it can be focused into a sharper focal spot of 0.125λ2 without additional apodizations or filters. The beam quality describing the purity of longitudinally polarized component is up to 86%.

关键词： focusing polarization laser beam

Geometrical,energetic and electronic properties of Au_n-(C_3H_6O)_m complexes(n = 3,5,m≤n):A density functional theory study

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Chinese Physics B 2010年第8期19卷 364-373页

作者：李迎春杨传路孙美玉李晓霞安义鹏王美山 School of Physics Ludong University

The interactions of acetone molecules with clusters of Au3 and Au5 are investigated by using a density functional theory （DFT） within a generalized gradient approximation （GGA）. The geometries, adsorption energies and deformation electron density distributions are used to analyse these interactions. The present calculations show that more than one acetone molecules can be adsorbed onto small gold clusters, and this adsorption is different from that of single molecule absorption. The coordination number of the adsorption site on the gold cluster is the dominant factor responsible for the strength of the interactions. The effects of the Au O bond lengths in the complexes on adsorption energies between Au clusters and acetone molecules are also examined.

关键词： acetone molecule gold cluster complex adsorption

Density-dependent photoabsorption cross sections of atomic Xe

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Chinese Physics B 2009年第1期18卷 161-166页

作者：马晓光 Department of Physics Ludong University

The evolution of the photoabsorption cross sections of atomic xenon with number densities varying from ideal gas to condensed matter has been studied by an alternative view in the present work. The alternative expressions of the photoabsorption cross sections presented by Sun et al recently were used with the local field models that has proven to be generalized easily to multiatoinic systems including molecules and condensed phase systems. The present results show that the variation of the photoabsorption cross sections of atomic xenon in the giant resonance region from the isolated to the condensed conditions is very small, which agrees well with the variation law of the solid and gas experiments.

关键词： condensed-phase photoabsorption local field xenon

Effect of Particle Number Density on Wave Dispersion in a Two-Dimensional Yukawa System

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Chinese Physics Letters 2017年第7期34卷 155-159页

作者：张壤月刘艳红黄峰陈朝阳李春燕 College of Science China Agricultural University Beijing 100083 School of Physics and Optoelectronic Engineering Ludong University Yantai 264025 Key Laboratory of Agricultural Informationization Standardization (Beijing) Ministry of Agriculture Beijing 100083 Department of Physics Beijing University of Chemical Technology Beijing 100029

Effect of the particle number density on the dispersion properties of longitudinal and transverse lattice waves in a two-dimensional Yukawa charged-dust system is investigated using molecular dynamics simulation. The dispersion relations for the waves are obtained. It is found that the frequencies of both the longitudinal and transverse dust waves increase with the density and when the density is sufficiently high a cutoff region appears at the short wavelength. With the increase of the particle number density, the common frequency tends to increase, and the sound speed of the longitudinal wave also increases, but that of the transverse wave remains low.

关键词： Effect of Particle Number Density on Wave Dispersion in a Two-Dimensional Yukawa System