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Chinese Physics Letters 2011年第1期28卷 205-207页

作者： LIANG Hui-Min WANG jing-quan College of Science Hebei University of Engineering Handan 056038 Department of Physics Sichuan University Chengdu 610064

Second-exciting surface-polasmon-polariton （SPP） interference lithography （SE-SPPIL） designed by an improving attenuated total reflection （ATR） mode is suggested for fabricating metal nanograting. A metal film coated under a prism excites SPP first, and then the SPP energy transmits into another metal film and launches SPP again. An interlayer between two metal films is a thin resist coated on the second metal film. An interference nanopattern is formed in the resist when two SPP waves are launched symmetrically. After development, chemical or physical etching, the nanopattern is transferred into the metal film. A random thickness metal grating can be achieved as the thickness of the second metal film does not influence the interference pattern intensity. This scheme is promising for fabricating metal nanograting at low cost.

关键词： Condensed matter: electrical, magnetic and optical Optics, quantum optics and lasers Nanoscale science and low-D systems

quantum Secure Communication Scheme with W State

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Communications in Theoretical Physics 2007年第4X期48卷 637-640页

作者： WANG Jian ZHANG quan TANG Chao-jing School of Electronic Science and Engineering National University of Defense Technology Changsha 410073 China

We present a quantum secure communication scheme using three-qubit W state. It is unnecessary for the present scheme to use alternative measurement or Bell basis measurement. Compared with the quantum secure direct communication scheme proposed by Cao et at. [H.J. Cao and H.S. Song, Chin. Phys. Lett. 23 （2006） 290], in our scheme, the detection probability for an eavesdropper＇s attack increases from 8.3% to 25%. We also show that our scheme is secure for a noise quantum channel.

关键词： quantum secure communication W state

Multiparty quantum Secret Sharing of Secure Direct Communication Using Teleportation

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Communications in Theoretical Physics 2007年第3期47卷 454-458页

作者： WANG Jian ZHANG quan TANG Chao-jing School of Electronic Science and Engineering National University of Defense Technology Changsha 410073 China

We present an （n, n） threshold quantum secret sharing scheme of secure direct communication using Greenberger-Horne-Zeilinger state and teleportation. After ensuring the security of the quantum channel, the sender encodes the secret message directly on a sequence of particle states and transmits it to the receivers by teleportation. The receivers can recover the secret message by combining their measurement results with the sender＇s result. Ira perfect quantum channel is used, our scheme is completely secure because the transmitting particle sequence does not carry the secret message. We also show our scheme is secure for noise quantum channel.

关键词： quantum secret sharing quantum teleportation

Effect of Quark Strong Interaction in Phase Transition on Supernova Explosion

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Communications in Theoretical Physics 2008年第6期49卷 1643-1648页

作者： LAI Xiang-Jun LUO Zhi-quan LIU jing-jing LIU Hong-Lin Institute of Theoretical Physics China West Normal University Nanchong 637002 China

The effect of quark interactions perturbatively to order αc on the conversion, from quark matter to strange quark matter, is studied systematically based on a recent set of current quark masses. The process has a significant effect on increasing the core temperature, the neutrino abundance and the neutrino energies even if there is no quark interaction. Furthermore, with the switch of the strong interaction among quarks, these quantities will increase respectively to some further extents with αc increase. Taking αc = 0.47 as an example, the temperature, the neutrino abundance and the total neutrino energies are further raised by about 10%, 7%, and 20% respectively, which is weakly dependent on the initial temperature. Combining the effect of the current quark mass and the effect of the quark strong interaction, the results of the conversions will greatly enhance the probability of success for a supernova explosion and deeply influence the dynamics of the supernova evolution.

关键词： supernova phase transitions quark interactions

Effect of Superstrong Magnetic Fields on Nuclear Energy Generation Rate in the Crust of Neutron Stars

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Communications in Theoretical Physics 2008年第4期49卷 1069-1072页

作者： LIU Hong-Lin LUO Zhi-quan LIU jing-jing LAI Xiang-Jun Institute of Theoretical Physics China West Normal University Nanchong 637002 China

This paper shows that superstrong magnetic fields （such as those of magnetars） can increase the energy generation rate many times in the crust of neutron stars. This result undoubtedly not only influences the coolin... 详细信息

关键词： superstrong magnetic fields energy generation rate neutron stars

Cross-Coupling Reactions of Pyrimidin-2-yl Sulfonates with Phenols and Anilines： An Efficient Approach to C2-Functionalized Pyrimidines

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Chinese Journal of Chemistry 2013年第12期31卷 1495-1502页

作者： Zhengjun quan Fuqiang jing Zhang Zhang Yuxia Da Xicun Wang Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education China Gansu Key Laboratory of Polymer Materials College of Chemistry and Chemical Engineering Northwest Normal University Anning East Road 967# Lanzhou Gansu 730070 China

Pyrimidin-2-yl sulfonates, as an efficient reaction partner, which can be easily prepared from cheap commercial materials, were coupled with phenols and anilines to give a wide array of C2-aryloxy- and arylaminopyrimi... 详细信息

关键词： cross-coupling pyrimindine-2-yl sulfonates C2-aryloxypyrimidines C2-arylaminopyrimidines

ANALYTICAL RESEARCH ON THE WAVE DIFFRACTION OF ARC-SHAPED FLOATING BREAKWATERS

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Journal of Hydrodynamics 2006年第1期18卷 1-10页

作者： MIAO Guo-ping CHENG Jian-sheng WANG jing-quan YOU Yun-xiang School of Naval Architecture Ocean and Civil Engineering Shanghai Jiaotong University Shanghai 200030 China Engineering Institute of Engineering Corps PLA University of Science and Technology Nanjing 210007 China

An analytical method was developed to study the wave diffraction on are-shaped floating breakwaters. The floating breakwater was assumed to be rigid, thin, vertical, immovable and located in water of constant depth. The fluid domain was divided into two regions by imaginary interface, The velocity potential in each region is expanded by eigenfunctions. By satisfying continuity of pressure and normal velocity across the imaginary fluid interface, a set of linear algebraic equations could be obtained to determine the unknown coefficients for eigenfunctions. The accuracy of present model and the computer program were verified by a comparison with ex isting results for the case of arc-shaped bottom-mounted breakwaters. Numerical results, in the form of contour maps of the non-dimension wave amplitude around the breakwater, were presented for a range of wave and breakwater parame ters. Results show the wave diffraction on the arc-shaped floating breakwater is related to the incident wavelength and the draft of the breakwater.

关键词： arc-shaped floating breakwater wave diffraction velocity potential eigenfunctions

WAVE DIFFRACTION ON ARC-SHAPED BOTTOM-MOUNTED BREAKWATERS

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Journal of Hydrodynamics 2005年第4期17卷 391-397页

An analytical method was developed to study the wave diffraction effects on arc-shaped bottom-mounted breakwaters. The breakwater was assumed to be rigid, thin, impermeable and vertically located in water of constant depth. The fluid domain was divided into two regions by imaginary cylindrical interface. The velocity potential in each region was expanded with cigcnfunctions. By satisfying continuity of pressure and normal velocity across the imaginary fluid interface, a set of linear algebraic equations could be obtained to determine the unknown coefficients for eigenfunction expansions. The accuracy of the present model was verified by a comparison with existing results for the case of an isolated straight-line breakwater. Numerical results, in the form of contour maps of the non-dimensional wave amplitude around the breakwater and diffracted wave amplitude at three typical sections, were presented for a range of wave parameters. Results show the arc-shaped bottom-mounted breakwater is generally effective in defending against waves. The wave amplitudes at most sheltered areas are commonly 10%-50% of incident wave amplitudes under most wave conditions.

关键词： arc-shaped breakwater wave diffraction velocity potential eigenfunction

EVALUATION OF ORAL MIDAZOLAM AS CONSCIOUS SEDATION FOR PEDIATRIC PATIENTS IN ORAL RESTORATION

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Chinese Medical Sciences Journal 2006年第3期21卷 163-166页

作者： Kuo Wan quan jing Ji-zhi Zhao Department of Endodontics Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730

Objective To evaluate the effect of midazolam alone on sedation in young children for dental restorative care. Methods Forty children, aged 5 to 10 years with a mean age of 7.3 years, participated in this study. Twenty-one patients were assigned to intervention group received 0. 5 mg/kg of oral midazolam 20 minutes prior to the beginning of dental treatment, and 19 patients in control group received placebo liquid 20 minutes before treatment. All patients received painless local anesthetic injection and were restrained with children＇s board and bands. Blood pressure （ BP）, heart rate （HR）, oxygen saturation, treatment compliance scores of the Ramsay scale, the Briekopf and Butmer scale, Frankl scale, and the Houpt scale were recorded. Each procedure was taped and all the data were evaluated every 5 minutes by an anesthetist or experienced dentist who was unaware of the drug given to the child. Results HR in intervention group （82. 5 ± 5.1 bpm） was much lower than that in control group （95.2 ± 8.9 bpm; F=31.20, P 〈0. 001 ）. Intervention group had a significantly lower systolic BP level （94.8±5.6 mmHg） than control group （98.5±5.5 mm Hg; F=4. 34, P =0. 04）, but the diastolic BP （63.0 ± 3.5 mm Hg） was not significantly lower than control group （ 65.5 ± 4. 8 mm Hg; F = 3.31, P = 0. 07 ）. Children in intervention group showed more compliance. The patients＇ scores of the Ramsay scale, Briekopf and Buttner scale, Frankl scale, and Houpt scale in intervention group （ 1.37 ± 0. 96, 1.37 ± 0. 83, 1.32 ± 0. 67, and 2. 32 ± 1.49, respectively） were significantly lower than those in control group （3.71 ± 1.23, 2.71 ± 0. 96, 2.71 ± 0. 90, and 4.71 ± 1.19 ; F = 44. 66, 22. 36, 30.39,and 31.88,respectively,all P〈0.001） Conclusions Oral midazolam alone is safe and produces effective sedation for the dental treatment of young children. Oral midazolam application should be generally preferred because it is more easily accepted by pediatric patients.

关键词： midazolam oral administration dental anxiety dental restoration

Proportional directional valve based automatic steering system for tractors

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Frontiers of Information Technology & Electronic Engineering 2016年第5期17卷 458-464页

作者： Jin-yi LIU jing-quan TAN En-rong MAO Zheng-he SONG Zhong-xiang ZHU Beijing Key Laboratory of Optimized Design for Modern Agricultural Equipment China Agricultural University

Most automatic steering systems for large tractors are designed with hydraulic systems that run on either constant flow or constant pressure. Such designs are limited in adaptability and applicability. Moreover, their control valves can unload in the neutral position and eventually lead to serious hydraulic leakage over long operation periods. In response to the problems noted above, a multifunctional automatic hydraulic steering circuit is presented. The system design is composed of a 5-way-3-position proportional directional valve, two pilot-controlled check valves, a pressure-compensated directional valve, a pressurecompensated flow regulator valve, a load shuttle valve, and a check valve, among other components. It is adaptable to most open-center systems with constant flow supply and closed-center systems with load feedback. The design maintains the lowest pressure under load feedback and stays at the neutral position during unloading, thus meeting the requirements for steering. The steering controller is based on proportional-integral-derivative(PID) running on a 51-microcontroller-unit master control chip. An experimental platform is developed to establish the basic characteristics of the system subject to stepwise inputs and sinusoidal tracking. Test results show that the system design demonstrates excellent control accuracy, fast response, and negligible leak during long operation periods.

关键词： Automatic steering system Hydraulic circuit Proportional directional valve Proportional-integral-derivative(PID) control