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| 1 | A note on approximation to multifractional Brownian motion显示文摘In this paper,we prove approximations of multifractional Brownian motions with moving-average representations and of those with harmonizable representations in the space of continuous functions on [0,1]. These approximations are constructed by Poisson processes. | DAI HongShuai LI YuQiang | 2011 | Science China Mathematics2011，54，10： | 4 |
| 2 | Magnetic and microwave absorption properties of Ni_(1-x)Zn_xFe_2O_4 nanocrystalline synthesized by sol-gel method显示文摘Ni1-xZnxFe2O4(0≤x≤1,in steps of 0.1) nanocrystallines were synthesized by sol-gel route.The doping effects of zinc on structural,magnetic and microwave absorption properties were investigated in detail.X-ray diffraction(XRD) results show that all the samples are single-phase spinel structure.The magnetic and microwave absorption properties are strongly dependent on the zinc content,which can be understood in terms of the cations redistribution in spinel tetrahedral and octahedral sites with the increase of zinc content.The magnetic measurement shows the antiferromagnetic nature of the samples for x=0.9 and x=1.0.The saturation magnetization reaches the maximum of 3.35μB/f.u.at x=0.5.The optimal reflection loss(RL) of-29.6 dB is found at 6.5 GHz for an absorber thickness of 5 mm.The RL values exceeding 10 dB are obtained for the absorber in the range of 3.9-8.9 GHz.These Ni1-xZnxFe2O4 nanocrystallines may be attractive candidates for electromagnetic wave absorption materials. | ZHANG Min LIU QiangChun ZI ZhenFa DAI YuQiang ZHU XueBin SUN YuPing DAI JianMing | 2013 | Science China(Technological Sciences)2013，56，1： | 4 |
| 3 | HYSYS Automation and Its Application on Evaluation of Plate Heat Exchanger显示文摘当为 multicomponent 混合物模仿或设计板热 exchangers 时,大多数设计者经常与怎么选择或估计物理性质参数和希望有能被采用的一个可靠数据库上的问题被困惑。商业代码 HYSYS 供应为 them.This 工作的超过 1500 种纯物质和超过 16 000 个二进制系数上的物理性质包裹简短基于在内部板热 exchanger 模拟代码和 HYSYS 包裹之间的微软部件对象模型(COM ) 介绍了一个有效通讯接口。一个定做的 HYSYS-COM 接口的应用程序显示出高效率,例如为评估每条过程溪流的性质需要的时间的重要减小。这个自动化方法能方便地被扩大为象热转移,列,和另外的设备那样的任何特定的操作设备推进优化学习。 | Dai Yuqiang Liu Wenwei Wang Shaomin Hu Dapeng | 2008 | China Petroleum Processing & Petrochemical Technology2008，10，3： | 3 |
| 4 | Study on gas and wave in a receiving tube显示文摘气体和波浪是在一个收到的试管的运动在现在的纸数字地并且试验性地被调查。结果显示出那,当气体在稳定的繁殖以后严厉地被注入收到的试管,然后落下,接触脸的速度很快升起。然而,在试管的波浪的速度是几乎线性的,波浪能在收到的试管的靠近的结束被反映。与入口压力增加,波浪的速度和接触脸的稳定的速度也增加。当波浪打扫气体,有明显的热效果。反映的波浪能在开的结束加热令人疲乏不堪的气体。作为一个吸收器,在试管罐头的扩展和一位精神病医生几乎完全吸收反映的波浪。 | Dapeng Hu Shengtao Chen Jun Yang Zuzhi Chen Yuqiang Dai Che Zhu Runjie Liu | 2008 | Journal of Thermal Science2008，17，2： | 2 |
| 5 | Study on Wall Temperature Distribution of Oscillating Tube显示文摘The wall temperature distribution and heat transfer process of the oscillating tube have been investigated in thispaper using both numerical simulation and experimental method. The wall temperature of oscillating tube increasesrapidly in the inlet and then decreases slowly, moreover, the rally phenomenon of wall temperature nearthe closed end is observed. With the increase of jet flow frequency, the highest wall temperature increases and thelocation of that moves towards the inlet. The velocity of pressure wave in the oscillating tube almost remainsconstant even its intensity changes. The quantity of heat transfer between the gas and inner wall of the oscillatingtube determines the wall temperature of every location, and the pressure wave disturbance can cause the heattransfer quantity change. Each pressure wave has its own disturbance range. The wall temperature distribution canbe explained by the change of pressure wave intensity and its disturbance time. Besides, the step and rally of walltemperature are discussed, which shows that the conditions of heat transfer can be improved due to intersection orreflection of pressure waves. | Dapeng HU Peiqi LIU Wenjing ZHAO Che ZHU Yudong WANG Yuqiang DAI Jiupeng ZOU | 2009 | Journal of Thermal Science2009，18，3： | 2 |
| 6 | Feasibility of Intermediate Fluid Vaporizer with Spiral Wound Tubes显示文摘A novel intermediate fluid vaporization (IFV) technology for LNG re-gasification process with spiral-wound heat exchanging tubes is proposed. The new IFV project combines the advantage of running the shell and tube heat exchangers at high pressure with the advantage of compact space of heat exchangers. Thermal analysis on the two processes of forced convection and vaporization type heat transfer in the spiral wound tubes and vapor condensation /re-boiling type of heat transfer via intermediate fluid in shell side shows the feasibility of this promising technology. | Liu Fengxia Dai Yuqiang Wei Wei Zou Jiupeng Zhu Che Dong Chao Hu Dapeng | 2013 | China Petroleum Processing & Petrochemical Technology2013，15，1： | 2 |
| 7 | A monoclonal antibody targeting neuropilin-1 inhibits adhesion of MCF7 breast cancer cells to fibronectin by suppressing the FAK/p130cas signaling pathway显示文摘 | Fanwei Zeng Fanghong Luo Sha Lv Haipeng Zhang Chang Cao Xiaoli Chen Shengyu Wang Zhe Li Xianjiang Wang Xiaofeng Dou Yujuan Dai Mingjun He Yafei Zhang Haiyan Lv Jianghua Yan Yuqiang Chen | 2014 | Anti-Cancer Drugs2014，，： | 1 |
| 8 | Study on wave rotor refrigerators显示文摘As a novel generation of a rotational gas wave machine,the wave rotor refrigerator(WRR)is an unsteadyflow device used for refrigeration,in whose passages pressured streams directly contact and exchange energy due to the movement of pressure waves.In this paper,the working mechanism and refrigeration principle are inves-tigated based on the one-dimensional unsteadyflow theory.A basic limitation on main structural parameters and operating parameters is deduced and the wave diagram of WRR to guide designing is sketched.The main influential factors are studied through an experiment.In the DUT Gas Wave Refrigeration Studying and Development Center(GWRSDC)lab,the isentropic efficiency can now reach about 65%.The results show that the WRR is a feasible and promising technology in pressured gas refrigeration cases. | Yuqiang DAI Dapeng HU Meixia DING | 2009 | Frontiers of Chemical Science and Engineering2009，3，1： | 0 |
| 9 | Numerical Simulations on Geometrical Properties of Wall-attaching Transonic Jet显示文摘Effects of operating conditions and device's geometrical sizes on geometrical properties of wall-attaching transonic jet between two parallel plat plates are numerically simulated. Conclusions are as follows: 1) Upriver part of the wall-attaching jet's center streamline is in good accordance with parabola; 2) When both gas inlet pressure and outlet pressure as well as their ratio are not too high ( the outlet pressure is less than 10 MPa and the pressure ratio is less than 3), the center streamlines of the wall-attaching jet with the same pressure ratio coincide with each other very well, and the deflection degree of the center streamline decreases with rise of the pressure ratio; 3) The deflection degree of the jet's center streamline decreases with either broadening of nozzle's throat or rise of wall offset; 4) With rise of the pressure ratio, attachment distance of the jet increases, but the increase rate descends; 5) The attachment distance ascends with rise of either the nozzle's throat or the wall offset. | Hu Dapeng Chen Zuzhi Dai Yuqiang Chen Shengtao | 2008 | Engineering Sciences2008，6，1： | 0 |
| 10 | An Improved Path Delay Variability Model via Multi-Level Fan-Out-of-4 Metric for Wide-Voltage-Range Digital CMOS Circuits显示文摘In advanced CMOS technology,process,voltage,and temperature(PVT)variations increase the paths’latency in digital circuits,especially when operating at a low supply voltage.The fan-out-of-4 inverter chain(FO4 chain)metric has been proven to be a good metric to estimate the path’s delay variability,whereas the previous work ignored the non-independent characteristic between the adjacent cells in a path.In this study,an improved model of path delay variability is established to describe the relationship between the paths’max-delay variability and an FO4 chain,which is based on multilevel FO4 metric and circuit-level parameters knobs(i.e.,cell topology and driving strength)of the first few cells.We take the slew and load into account to improve the accuracy of this framework.Examples of 28 nm and 40 nm digital circuits show that our model conforms with Monte Carlo simulations as well as fabricated chips’measurements.It is able to model the delay variability effectively to speed up the design process with limited accuracy loss.It also provides a deeper understanding and quick estimation of the path delay variability from the near-threshold to nominal voltages. | CUI Yuqiang SHAN Weiwei DAI Wentao LIU Xinning GUO Jingjing CAO Peng | 2023 | Chinese Journal of Electronics2023，32，2： | 0 |
| 11 | An efficient path delay variability model for wide-voltage-range digital circuits显示文摘Dear editor,As process technology advances, the parasitic effects of integrated circuits become increasingly prominent, posing serious challenges for integrated circuit design [1, 2]. Variations in the process corner, voltage, and temperature(PVT) have a more significant impact on path delay in digital circuits in advanced processes, especially at the near-threshold voltage(NTV) [3, 4]. The delay variability of the critical path needs to be evaluated to minimize the timing margin while ensuring reliability. | Weiwei SHAN Yuqiang CUI Wentao DAI Xinning LIU Jingjing GUO Peng CAO Jun YANG | 2023 | Science China(Information Sciences)2023，66，2： | 0 |
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