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A new kind of nonlinear fractional-order chaotic phenomenon in coupled systems： coexistence of anti-phase and complete synchronization

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Chinese Physics B 2011年第8期20卷 90-96页

作者： zhang jun-feng Pei Qiu-Yu zhang Xiao-Li Department of Computer Science and Engineering Henan University of Urban Construction Pingdingshan 467036 China The Aeronautical Science Key Laboratory for Smart Material and Structures Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

In this paper, we have found a kind of interesting nonlinear phenomenon hybrid synchronization in linearly coupled fractional-order chaotic systems. This new synchronization mechanism, i.e., part of state variables are anti- phase synchronized and part completely synchronized, can be achieved using a single linear controller with only one drive variable. Based on the stability theory of the fractional-order system, we investigated the possible existence of this new synchronization mechanism. Moreover, a helpful theorem, serving as a determinant for the gain of the controller, is also presented. Solutions of coupled systems are obtained numerically by an improved Adams Bashforth-Moulton algorithm. To support our theoretical analysis, simulation results are given.

关键词： fractional-order unified chaotic system hybrid synchronization linear controller singledrive variable

Soliton Motion in （1＋1）-Dimensions

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Communications in Theoretical Physics 2006年第1期45卷 41-44页

作者： zhang jun SHEN Shou-feng Department of Mathematics Zhejiang University of Technology Hangzhou 310014~ China

By using the variable separation approach, which is based on the corresponding Backlund transformation, new exact solutions of a （1＋1）-dimensional nonlinear evolution equation are obtained. Abundant new soliton mot... 详细信息

关键词： Backlund transformation variable separation nonlinear evolution equation soliton

Electronic Structure and Magnetic Properties of Cr-Doped AlN

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Communications in Theoretical Physics 2007年第4X期48卷 749-753页

作者： CHEN Hong zhang jun-feng YUAN Hong-Kuan School of Physical Science and Technology Southwest University Chongqing 400715 China

To understand the electronic and magnetic properties, we have studied Cr-doped zinc-blende AlN system in detail by applying a first-principle plane wave pseudopotential method based on the density functional theory within the local spin density approximation. The analyses of the band structures, density of states, exchange interactions, and magnetic moments show that Al1-xCrxN alloys may exhibit a half-metallic ferromagnetism character, that Cr in the diluted doping limit forms near-midgap deep levels, and that the total magnetization of the cell is 3μB per Cr atom, which does not change with Cr concentration. Moreover, we have succeeded in predicting that Al1-xCrzN alloys in x = 0.0625 has a very high Curie temperature, and lind that ferromagnetic exchange interaction between magnetic dopants is short-ranged.

关键词： density functional theory electronic structure magnetism Curie temperature

Synthesis and Spectroscopic Properties of Cyclotriphosphazenes Containing 6-(4-Hydroxyphenyl)-2,2'-bipyridine Side Groups

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Chemical Research in Chinese Universities 2007年第6期23卷 679-682页

作者： zhang jun-feng GAN Xin OU Xue-mei FU Wen-fu College of Chemistry and Chemical Engineering Yunnan Normal University Kunming 650092 P. R. China Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100080 P. R. China

Two novel cyclotriphosphazene derivatives containing 6- （4-hydroxyphenyl）-2,2′-bipyridine （hopbp） side groups, N3 P3 （dobp） 2 （hopbp） 2 （ 1 ） and N3 P3 （dobp）（hopbp） 4 （2）（ dobp = 2,2′-dioxybiphenyl）, were synthesized and characterized. These compounds display strong fluorescent emission both in solution and in solid state. Their absorption and emission spectra are sensitive to proton： the addition of HBF4 to the methanol and dichloromethane solution（9： 1, volume ratio） of compound 1 led to a red-shift from 350 to 460 nm for the emission spectrum, and the process was also characterized by isosbestic points of absorption spectra at 267, 287 and 313 nm.

关键词： Cyelotriphosphazene Bipyridine Proton Spectra

GOING FURTHER INTO LATE MESOZOIC MESOLYGAEIDS (HETEROPTERA, INSECTA)

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古生物学报 1991年第6期 695-703+793-797页

作者： zhang jun-feng (Shandong Provincial Museum, Jinan 250012)

A large collection of fossil insects has recently been recovered from the Late Mesozoic nonmarine sediments throughout East Asia, with many specimens regarded as the mesolygaeids, representing a new family Mesolygaeidae of Heteroptera. As Lycoptera Muller and Eosestheria Chen, Mesolygaeus Ping is the common genus of the Jehol fauna Since some of them are geographically widespread and can be easily collected, they are significant to stratigraphic divisions and correlations in East Asia.

关键词： bug fossils taxonomy bioecology Late Mesozoic

FOSSIL COLEOPTERA FROM LAIYANG, SHANDONG PROVINCE, CHINA

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昆虫学报 1992年第3期 335-338页

作者： zhang jun-feng(Shandong Provincial Museum, Jinan 250012)

Of late years, a great number of insect fossils from the Late Mesozoic non-marine sedi ments of East Asia have been discovered, of which the Coleoptera are abundant. The major localities yielded insect remains come from Jiuquan of Gansu Province, Laiyang of Shandong Province, China, and Anda-Khuduk(=Odai Sait) of Ubur-Khangai, Manlay of South-Gobi, the Ikhesnur of Gobi-Altai, Mongolia, as well as the Baissa of Transbaikalia, Kussia. In the light of

关键词： FOSSIL COLEOPTERA FROM LAIYANG SHANDONG PROVINCE CHINA

Clinical Observation on Acupuncture Combined with Hyperbaric Oxygenation in Treating Patients with Cervical Spondylosis of Nerve Root Type in Acute Phase

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Journal of Acupuncture and Tuina Science 2014年第4期12卷 236-240页

作者： Wang Jian-xiong zhang jun-feng Deng Ying Shanghai Jiao Tong University Affiliated Sixth People's Hospital

Objective： To observe the therapeutic efficacy of acupuncture combined with hyperbaric oxygenation for cervical spondylosis of nerve root type in acute phase. Methods： One hundred cases with cervical spondylosis of nerve root type in acute phase were randomly divided into two groups, with 50 patients in each group. The patients in the treatment group were treated by acupuncture combined with hyperbaric oxygenation, and those in the control group only received the same acupuncture therapy as the treatment group. The therapeutic efficacy was evaluated after 2 courses of treatment. Results： In the treatment group, 27cases were cured, 9 cases showed markedly effective, and 4 cases were invalid, and the recovery rate was 67.5%, the total effective rate was 90.0%; in the control group, 18 cases were cured, 17 cases showed markedly effective, 15 cases were invalid, and the recovery rate was 36.0%, the total effective rate was 70.0%. There were statistically significant differences between two groupsin the recovery rate and the total effective rate （bothP＆lt;0.05）. The average cure time of the treatment group was （15.56＆#177;7.13） d, and that of the control group was （22.13＆#177;7.78） d, which also had significant difference between the two groups （P＆lt;0.05）. Conclusion： Acupuncture combined with hyperbaric oxygenationhas rapid and reliable effects for cervical spondylosis of nerve root type in acute phase.

关键词： Acupuncture Therapy Hyperbaric Oxygenation Spondylosis Neck Pain

Simultaneous Determination of Gold and Platinum by Double Artificial Neural Network Analysis with Flow-injection Chemiluminescence

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Chinese Chemical Letters 2006年第10期17卷 1343-1346页

作者： Ming Yang LIU Hai Tao zhang jun feng LI Shu Gui CHEN Hong Yan WANG College of chemistry Jilin University Changchun 130012

A highly sensitive double artificial neural network （DANN） analysis with flow-injection chemiluminescence （FI-CL） has been developed to simultaneously determine the trace amounts of the gold and platinum in simula... 详细信息

关键词： Double artificial neural networks flow-injection chemiluminescence simultaneous determination gold and platinum.

Clinical Study on Puncturing Houxi (SI 3) Toward Hegu (LI 4) plus Lumbar Movement for Acute Lumbar Sprain

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Journal of Acupuncture and Tuina Science 2013年第1期11卷 53-56页

作者： Zhou Jing-hui Wu Yao-chi SunYi-jun zhang jun-feng Hong Jue Department of Acupuncture Tuina and TraumatologyNo.6 People's Hospital Affiliated to Shanghai Jiaotong University Department of Acupuncture Tuina and TraumatologyNo.6 People’s Hospital Affiliated to Shanghai Jiaotong University

Objective： To observe the therapeutic efficacy of puncturing Houxi （SI 3） toward Hegu （LI 4） plus lumbar movement in treating acute lumbar sprain. Methods： A total of 212 patients with acute lumbar sprain were randomized into two groups. There were 106 subjects in the observation group who were treated with puncturing Houxi （SI 3） toward Hegu （LI 4） plus lumbar movement; the other 106 patients in the control group were treated with puncturing Houxi （SI 3） toward Hegu （LI 4） alone. Therapeutic efficacy was evaluated after 2 treatment courses. Results： The total effective rate was 95.3% in the observation group versus 88.7% in the control group, and the difference was statistically insignificant between the two groups （P〉O.05）. However, in comparing the treatment times for achieving recovery and effectiveness, differences between the two groups were statistically significant （both P〈O.05）, indicating that integrated use of acupuncture and exercise is faster in realizing therapeutic effectiveness. Conclusion： By selecting fewer acupoints, puncturing Houxi （Sl 3） toward Hegu （LI 4） is effective in treating acute lumbar sprain, and with the help of lumbar movement, it can achieve even better treatment effect.

关键词： Point-through-point Method Acupuncture Therapy Electroacupuncture Low Back Pain Lumbar Sprain Sprains and Strains