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| 1 | Design of terahertz band-stop filter based on a metallic resonator on high-resistivity silicon wafer显示文摘In this paper, we present a terahertz (THz) band-stop filter realized by fabricating a metallic T-shaped resonator pattern on the high-resistivity silicon wafer. The filter exhibits two typical band-stop response characteristics depending on the incident direction of electric field with respect to the T-shaped resonator. When the long and the short arms of the T-shaped resonator were electrically polarized by changing the incident THz wave transmission directions, the corresponding central frequencies of the band-stop filter were found to be 0.436 THz at 42dB and 0.610 THz at 28 dB, respectively. Using three-dimensional (3D) finite-integral time-domain simulations, the band-stop filter was designed, which can operate in the wavelength between 0.2 and 0.8 THz. Experimental verification was also performed using a free space THz time-domain spectroscopy system. The band-stop response characteristics are in good agreement with the simulation results. The interesting THz band-stop filtering properties suggest a promising application in the modern THz communication systems, THz time-domain spectroscopic imaging and THz continuous wave imaging. | ZHANG JinLing ZHANG Yu GAO Ke Du YuLei ZHANG Nan LU YingHua | 2013 | Science China(Technological Sciences)2013，56，9： | 2 |
| 2 | Hole-pinned defect-dipoles induced colossal permittivity in Bi doped SrTiO3 ceramics with Sr deficiency显示文摘Bi doped SrTiO3 ceramics with Sr deficiency,i.e.Sr1-1.5xBixTiO3(x=0,0.01,0.05,0.1),were prepared via conventional solid-state reaction route.A colossal permittivity(CP)over 104 with low dielectric loss less than 0.05wasobtained in x=0.05 Sr1-1.5xBixTiO3 ceramics.In addition,the dielectric constant is maintained at a value greater than 104 in the range of 102-105 Hz and almost frequency independent.Phase structure analysis and density functional theory calculations suggest that the Bi·Sr-V'Sr-Bi·Sr defect complex with hole-pinned defect-dipoles maybe responsible for the high-performance CP properties.This work gives a new way to achieve high performance CP materials in ABO3 perovskite ceramics. | Yulong Qiao Weili Li Yulei Zhang Lu Jing Chang Gao Wenping Cao Dan Xu Weidong Fei | 2020 | Journal of Materials Science & Technology2020，44，9： | 2 |
| 3 | Analysis of factors influencing cardiopulmonary resuscitation and survival outcome in adults after in-hospital cardiac arrest:a retrospective observational study显示文摘To the Editor:Cardiopulmonary resuscitation(CPR)guidelines,especially the latest 2020 guidelines issued by the American Heart Association(AHA),have emphasized the importance of high-quality CPR.[1]The research on cardiac arrest(CA)and CPR has dramatically increased in recent years,and the international recovery guidelines are also being revised and implemented.However,the outcome of in-hospital cardiac arrest(IHCA)remains poor,and the understanding of the prognostic factors for survival outcome after IHCA is lacking,especially in China.Patients with CA are often poorly treated,and the incidence and mortality of CA are increasing yearly.[2]This study analyzed the effects of CPR,and explored the factors that affect survival outcome after IHCA in adults. | Chaolan Wang Yulei Gao Yancun Liu Ying Yao Chen Li Qingsong Li Yanfen Chai | 2022 | Chinese Medical Journal2022，135，23： | 1 |
| 4 | Chemical speciation and human health risk of trace metals in urban street dusts from a metropolitan city, Nanjing, SE China显示文摘 | Huiming Li Xin Qian Wei Hu Yulei Wang Hailong Gao | 2013 | Science of the Total Environment2013，，： | 1 |
| 5 | Promoting effect of boron oxide on Cu/Si O2catalyst for glycerol hydrogenolysis to 1,2-propanediol显示文摘 | Shanhui Zhu Xiaoqing Gao Yulei Zhu | 2013 | Journal Of Catalysis2013，303，： | 1 |
| 6 | Synthesis of Fe3O4@poly (methylmethacrylate-co-divinylbenzene) magnetic porous microspheres and their application in the separation of phenol from aqueous solutions显示文摘 | Tai Yulei Wang Li Gao Jingmin | 2011 | Journal of Colloid and Interface Science2011，360，： | 1 |
| 7 | Dreaming One Dream显示文摘3G.CN founders Deng Yuqiang and Zhang Xiangdong discover a way to turn their Cooperation into a story of success One day in July of 2006,employees of 3G.CN were enjoying their lunch break just like any other day. At the same time,each was using a mobile phone to read the | GAO YULEI | 2007 | Beijing Review2007，50，41： | 0 |
| 8 | Experimental measurement of bipartite entanglement using parameterized quantum circuits显示文摘Entanglement in quantum systems plays a crucial role in various quantum information tasks. Measuring entanglement has been an important issue in both experiments and theories. In this work, we use parameterized quantum circuits(PQCs) to diagonalize density matrices of quantum states and obtain entanglement by only measuring the diagonal elements. With this method, full quantum state tomography can be bypassed, greatly reducing the number of measurements. A comprehensive characterization of entanglement was performed by using Rényi entropy and partially transposed moments. Mutual information, calculated from entropy is also used to characterize dynamical quantum phase transitions. We experimentally demonstrated the method on a four-qubit nuclear magnetic resonance quantum simulator. Our results agree with the theoretical descriptions. The measurement complexity of our PQC-based method grows linearly with the number of diagonal elements in the density matrix, a square root reduction over the full quantum tomography. The proposed method can have great potential in quantum systems with a large number of particles. | Shunzhong Xue Yulei Huang Dafa Zhao Chao Wei Jun Li Ying Dong Jiancun Gao Dawei Lu Tao Xin Gui-Lu Long | 2022 | Science China(Physics,Mechanics & Astronomy)2022，65，8： | 0 |
| 9 | Profit Prospects For E-Magazines显示文摘Electronic magazines are looking for a successful profitability model The past two years have been a golden time for Web 2.0 concept com- panies. Of all the venture capital invested in China last year-total-ing $1.64 billion-about $100 million poured | GAO YULEI | 2007 | Beijing Review2007，50，22： | 0 |
| 10 | Development of a novel two-stage proportional valve with a pilot digital flow distribution显示文摘Pilot two-stage proportional valves are widely used in high-power hydraulic systems. For the purpose of improving the dynamic performance, reliability, and digitization of the traditional proportional valve, a novel two-stage proportional valve with a pilot digital flow distribution is proposed from the viewpoint of the dual nozzle-flapper valve’s working principle. In particular, the dual nozzle-flapper is decoupled by two high-speed on/off valves (HSVs). First, the working principle and mathematical model of the proposed valve are determined. Then, the influences of the control parameters (duty cycle and switching frequency) and structural parameters (fixed orifice’s diameter and main valve’s spring) on the main valve’s motion are analyzed on the basis of theory, simulation, and experiment. In addition, in optimizing the value of the fixed orifice’s diameter, a new design criterion that considers the maximum pressure sensitivity, flow controllability, and flow linearization is proposed to improve the balance between the effective displacement and the displacement fluctuation of the main valve. The new scheme is verified by simulations and experiments. Experimental results of the closed-loop displacement tracking have demonstrated that the delay time of the main valve is always within 3.5 ms under different working conditions, and the tracking error can be significantly reduced using the higher switching frequency. The amplitude–frequency experiments indicate that a −3 dB-frequency of the proposed valve can reach 9.5 Hz in the case of ±50% full scale and 15 Hz in the case of 0%–50% full scale. The values can be further improved by increasing the flow rate of the pilot HSV. | Qiang GAO Yuchuan ZHU Changwen WU Yulei JIANG | 2021 | Frontiers of Mechanical Engineering2021，16，2： | 0 |
| 11 | A Business of His Own显示文摘Wu Xisang, who has grown from being just another computer programmer into a competent CEO, now seeks a listing for Huoshi Software After two investment rounds by Qihoo.com and Shanghai-based D-hui Investment to the tune of $10 million last year, Wu | GAO YULEI | 2007 | Beijing Review2007，50，18： | 0 |
| 12 | Prospecting for Internet Gaming Gold In China显示文摘Chinese online game portals roll the dice on the future The total number of online gamers inChina is expected to | GAO YULEI | 2007 | Beijing Review2007，50，16： | 0 |
| 13 | Chemical Synthesis of Structurally Defined Phosphorylated Ubiquitins Suggests Impaired Parkin Activation by Phosphorylated Ubiquitins with a Non-Phosphorylated Distal Unit显示文摘Mutations in genes encoding PINK1(PTEN-induced kinase 1)and Parkin(E3 ubiquitin ligase)are identified in familial Parkinson’s disease.However,it remains unclear whether the phosphorylated Ub chains activate wild-type Parkin(w-Parkin)or phosphorylated Parkin(p-Parkin),with the consequent expulsion of the damaged mitochondria. | Man Pan Qingyun Zheng Shuai Gao Qian Qu Yuanyuan Yu Ming Wu Huan Lan Yulei Li Sanling Liu Jiabin Li Demeng Sun Lining Lu Tian Wang Wenhao Zhang Jiawei Wang Yiming Li Hong-Gang Hu Changlin Tian Lei Liu | 2019 | CCS Chemistry2019，1，5： | 0 |
| 14 | A Real Fixer Upper显示文摘As foreign venture capital pours in,China’s home improvement industry begins a new round of reshuffling“We have sold what had to be sold and phased out what had to be | GAO YULEI | 2007 | Beijing Review2007，50，23： | 0 |
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