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Fast topological pumping for the generation of large-scale Greenberger–Horne–Zeilinger states in a superconducting circuit

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Frontiers of physics 2022年第6期17卷 143-161页

作者： Jin-Xuan Han Jin-Lei Wu zhong-Hui yuan Yan Xia yong-yuan Jiang Jie Song School of Physics Harbin Institute of TechnologyHarbin 150001China Department of Optoelectronics Science Harbin Institute of TechnologyWeihai 264209China Department of Physics Fuzhou UniversityFuzhou 350002China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China Key Laboratory of Micro-Nano Optoelectronic Information System Ministry of Industry and Information TechnologyHarbin 150001China Key Laboratory of Micro-Optics and Photonic Technology of Heilongjiang Province Harbin Institute of TechnologyHarbin 150001China

Topological pumping of edge states in the finite lattice with nontrivial topological phases provides a powerful means for robust excitation transfer,requiring extremely slow evolution to follow an adiabatic ***,we propose fast topological pumping via edge channels to generate large-scale Greenberger–Horne–Zeilinger(GHZ)states in a topological superconducting circuit with a sped-up evolution *** scheme indicates a conceptual way of designing fast topological pumping related to the instantaneous energy spectrum characteristics rather than relying on the shortcuts to *** on fast topological pumping,large-scale GHZ states show greater robustness against on-site potential defects,the fluctuation of couplings and losses of the system in comparison with the conventional adiabatic topological *** experimentally feasible qutrit-resonator coupling strengths and moderate decay rates of qutrits and resonators,fast topological pumping drastically improves the scalability of GHZ states with a high *** work opens up prospects for the realization of large-scale GHZ states based on fast topological pumping in the superconducting quantum circuit system,which provides potential applications of topological matters in quantum information processing.

关键词： topological pumping superconducting ciruit large-scale Greenberger-Horne-Zeilinger states

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Detection of Genetically Modified Crops by Combination of Multiplex PCR and Low-density DNA Microarray

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Biomedical and Environmental Sciences 2008年第1期21卷 53-62页

作者： PING-PING ZHOU JIAN-zhong ZHANG yuan-HAI YOU yong-NING WU National Institute for Nutrition and Food Safety Chinese Center for Disease Control and Prevention Beijing 100050 China National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Beijing 102206 China

Objective To develop a technique for simultaneous detection of various target genes in Roundup Ready soybean by combining multiplex PCR and low-density DNA microarray. Methods Two sets of the multiplex PCR system were used to amplify the target genes in genetically modified （GM） soybean. Seventeen capture probes （PCR products） and 17 pairs of corresponding primers were designed according to the genetic characteristics of Rroundup Ready soybean （GTS40-3-2）, maize （MonS10, Nk603, GA21）, canola （T45, MS1/RF1）, and rice （SCK） in many identified GM crops. All of the probes were categorized and identified as species-specific probes. One negative probe and one positive control probe were used to assess the efficiency of all reactions, and therefore eliminate any false positive and negative results. After multiplex PCR reaction, amplicons were adulterated with Cy5-dUTP and hybridized with DNA microarray. The array was then scanned to display the specific hybridization signals of target genes. The assay was applied to the analysis of sample of certified transgenic soybean （Roundup Ready GTS40-3-2） and canola （MS1/RF1）. Results A combination technique of multiplex PCR and DNA microarray was successfully developed to identify multi-target genes in Roundup Ready soybean and MS 1/RF1 canola with a great specificity and reliability. Reliable identification of genetic characteristics of Roundup Ready of GM soybean from genetically modified crops was achieved at 0.5% transgenic events, indicating a high sensitivity. Conclusion A combination technique of multiplex PCR and low-density DNA microarray can reliably detect and identify the genetically modified crops.

关键词： Genetically modified organisms Low-density DNA microarray Multiplex PCR Roundup Ready soybean MS 1/RF1 canola

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CFD-DEM simulation of spouting of corn-shaped particles

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Particuology 2012年第5期10卷 562-572页

作者： Bing Ren Wenqi zhong Yu Chen Xi Chen Baosheng Jin Zhulin yuan yong Lu Ministry of Education of Key Laboratory of Energy Thermal Conversion and Control School of Energy and EnvironmentSoutheast UniversityNanjing210096China

Three dimensionally coupled computational fluid dynamics （CFD） and discrete element method （DEM） were used to investigate the flow of corn-shaped particles in a cylindrical spouted bed with a conical base. The particle motion was modeled by the DEM, and the gas motion by the k-ε two-equation turbulent model. A two-way coupling numerical iterative scheme was used to incorporate the effects of gas-particle interactions in terms of momentum exchange. The corn-shaped particles were constructed by a multisphere method. Drag force, contact force, Saffman lift force, Magnus lift force, and gravitational force acting on each individual particle were considered in establishing the mathematical modeling. Calculations were carried out in a cylindrical spouted bed with an inside diameter of 200 mm, a height of 700 mm, and a conical base of 60°. Comparison of simulations with experiments showed the availability of the multi-sphere method in simulating spouting action with corn-shaped particles, but it depended strongly on the number and the arrangement of the spherical elements. Gas-solid flow patterns, pressure drop, particle velocity and particle concentration at various spouting gas velocity were discussed. The results showed that particle velocity reaches a maximum at the axis and then decreases gradually along the radial direction in the whole bed. Particle concentration increases along the radial direction in the spout region but decreases in the fountain region, while it is nearly constant in the annulus region. Increasing spouting gas velocity leads to larger pressure drop, remarkably increased speed of particle moving upward or downward, but decreased particle concentration.

关键词： Gas-solid flowDiscrete element methodSpouted bedCorn-shaped particleMulti-sphere method

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Mesoscale Simulation for Polymer Migration in Confined Uniform Shear Flow

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Chemical Research in Chinese Universities 2010年第1期26卷 122-127页

作者： HE Yan-dong WANG yong-lei LU zhong-yuan LI Ze-sheng State Key Laboratory of Theretical and Computational Chemistry Institute of Theoretical Chemistry Jilin University Changehun 130021P. R. China

The structure and dynamics of confined single polymer chain in a dilute solution, either in equilibrium or at different shear rates in the uniform shear flow fields, were investigated by means of dissipative particle dynamics simulations. The no-slip boundary condition without density fluctuation near the wall was taken into account to mimic the environment of a nanochannel. The dependences of the radius of gyration, especially in three different di- rections, and the density profile of the chain mass center on the strength of the confinement and the Weissenberg number（Wn） was studied. The effect of the interaction between polymer and solvent on the density profile was also investigated in the cases of moderate and strong Wn. In the high shear flow, the polymer migrates to the center of the channel with increasing Wn. There is only one density profile peak in the channel center in the uniform shear flow, which is in agreement with the results of the experiments and theory.

关键词： Confined polymer Dissipative particle dynamics No-slip boundary condition Uniform shear flow

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TAR DNA-Binding Protein 43 is Cleaved by the Protease 3C of Enterovirus A71

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Virologica Sinica 2021年第1期36卷 95-103页

作者： Xiaoman Wo yuan yuan yong Xu Yang Chen Yao Wang Shuoxuan Zhao Lexun Lin Xiaoyan zhong Yan Wang Zhaohua zhong Wenran Zhao Department of Cell Biology Harbin Medical UniversityHarbin 150081China Department of Microbiology Harbin Medical UniversityHarbin 150081China

Enterovirus A71(EV-A71)is one of the etiological pathogens leading to hand,foot,and mouth disease(HFMD),which can cause severe neurological *** neuropathogenesis of EV-A71 infection is not well *** mislocalization and aggregation of TAR DNA-binding protein 43(TDP-43)is the pathological hallmark of amyotrophic lateral sclerosis(ALS).However,whether TDP-43 was impacted by EV-A71 infection is *** study demonstrated that TDP-43 was cleaved during EV-A71 *** cleavage of TDP-43 requires EV-A71 replication rather than the activated caspases due to viral ***-43 is cleaved by viral protease 3 C between the residues 331 Q and332 S,while mutated TDP-43(Q331 A)was not *** addition,mutated 3 C which lacks the protease activity failed to induce TDP-43 *** also found that TDP-43 was translocated from the nucleus to the cytoplasm,and the mislocalization of TDP-43 was induced by viral protease 2 A rather than 3 *** together,we demonstrated that TDP-43 was cleaved by viral protease and translocated to the cytoplasm during EV-A71 infection,implicating the possible involvement of TDP-43 in the pathogenesis of EV-A71 infection.

关键词： Enterovirus A71(EV-A71) TAR DNA-binding protein 43(TDP-43) 3C protease 2A protease

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Structure and electrochemical characteristics of Mg–Ti–Ni-based electrode alloys synthesized by mechanical milling

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Journal of Iron and Steel Research International 2021年第10期28卷 1329-1340页

作者： zhong-hui Hou Xin Wei Wei Zhang Ze-ming yuan Hui yong Qi-lu Ge Department of Functional Material Research Central Iron and Steel Research InstituteBeijing100081China Inner Mongolia University of Science and Technology Baotou014010Inner MongoliaChina

The vacuum induction melting was adopted to fabricating Mg_(50−x)Ti_(x)Ni_(45)Al_(3)Co_(2)(x=0,1,2,3,4 at.%)composites protected by the high-purity helium ***,the surface modification treatment of the as-cast alloys was carried out by mechanically coating *** amorphous and nanocrystalline Mg_(50−x)Ti_(x)Ni_(45)Al_(3)Co_(2)(x=0–4)+50 wt.%Ni hydrogen storing alloys as the negative materials in batteries were prepared through ball milling,and the influences of milling time and Ti dosage on the structure and electrochemical hydrogen storing behaviors of the corresponding samples were studied in *** electrochemical testing reveals that the as-milled alloys have excellent performances and can finish the electrochemical hydrogenation and dehydrogenation at indoor *** the first cycle without activation,the ball milling alloy obtains the maximum value of discharge *** capacity and cyclic steadiness of the composites conspicuously grow as Ti content and milling duration ***,the capacity retaining rate at 100th cycle and the discharge capacity of 30 h milling samples augment from 53%to 78%and from 435.2 to 567.2 mAh/g with changing Ti content from 0 to *** same performances of the alloy(x=4)are enhanced from 61%to 78%and from 379.9 to 567.2 mAh/g,respectively,with extending milling ***,high rate discharge ability,potential-step measurements,potentiodynamic polarization curves and electrochemical impedance spectrum manifest that the electrochemical kinetics properties can achieve significant amelioration as Ti content varies and milling duration is extended.

关键词： MgNi-based alloy Ti substitution of Mg Surface modification Mechanical milling Electrochemical performance

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R/S Analysis and its Application in the Forecast of Mine Inflows

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Journal of China University of Mining and Technology 2006年第4期16卷 425-428页

作者： YANG yong-guo yuan Jian-fei CHEN Suo-zhong School of Resources and Earth Sciences China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

In this paper, the status quo and modeling principles of R/S analysis of non-linear theory are introduced and reviewed. Given the hydro-geological conditions of the Wutongzhuang coal mine, Hurst exponents of mine inflow for the main shaft, venti- lating shaft and auxiliary shaft were obtained using R/S analysis, which are 0.772 0, 0.824 7 and 0.905 1 respectively. Since all of the three Hurst exponents are larger than 0.5, it can be concluded that the trend of mine inflow are a long-term as well as persistent problem. Based on the level of duration, the shafts can be listed in decreasing order as the auxiliary shaft, the ventilation shaft and the main shaft, which appears identical with the actual situation of the mine inflow. With R/S analysis, a new method for long-term forecasting of mine inflows is provided.

关键词： R/S analysis Wutongzhuang coal mine mine inflow forecasting Hurst exponents

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孕妇外周血中RASSF1A基因甲基化状态研究

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中国优生与遗传杂志 2017年第10期25卷 5-6,48页

作者：冉贵萍余宗蓉袁勇李娜杜翠红上海交通大学医学院附属第九人民医院奉城分院上海201411

目的探讨RASSF1A基因作为孕妇外周血中胎儿特异性标记物的可行性。方法随机选取43例的外周血样本,其中妊娠晚期孕妇标本40例、健康未妊娠女性标本3例,以及早期妊娠行流产的绒毛组织样本5例。利用甲基化敏感限制性内切酶PCR(MSRE-PCR)及... 详细信息

目的探讨RASSF1A基因作为孕妇外周血中胎儿特异性标记物的可行性。方法随机选取43例的外周血样本,其中妊娠晚期孕妇标本40例、健康未妊娠女性标本3例,以及早期妊娠行流产的绒毛组织样本5例。利用甲基化敏感限制性内切酶PCR(MSRE-PCR)及荧光定量PCR的方法,检测血细胞、绒毛和血浆DNA的RASSF1A基因甲基化状态。结果健康未妊娠妇女血浆及孕妇血细胞中均未检出甲基化RASSF1A基因;绒毛组织中甲基化RASSF1A基因检出率为100%;孕妇血浆中甲基化RASSF1A基因检出率为92.5%。妊娠晚期孕妇血浆RASSF1A基因含量Ct平均值为30.43±2.37。结论在母体和胎儿DNA中,RASSF1A基因甲基化状态有明显差异,用实时荧光定量PCR可对孕妇血浆RASSF1A基因进行定量,提示了RASSF1A基因是无创产前诊断的一个潜在标记物。

关键词： RASSF1A基因甲基化游离胎儿DNA 孕妇血浆

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北川河流域退耕还林(草)对土壤质量影响的评价

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水土保持研究 2005年第6期12卷 1-3页

作者：李文忠贺永元张伟华周心澄北京林业大学水土保持学院北京100083 青海省大通县林业局青海大通810100

'万物土中生',土壤是生态环境的重要组成部分.探讨退耕还林(草)工程对土壤质量的影响,可以为工程的持续开展提供有关的理论依据.通过对我国退耕还林(草)工程重点试验县--青海省大通县北川河流域不同时间序列的退耕地的土壤,进行了系统... 详细信息

'万物土中生',土壤是生态环境的重要组成部分.探讨退耕还林(草)工程对土壤质量的影响,可以为工程的持续开展提供有关的理论依据.通过对我国退耕还林(草)工程重点试验县--青海省大通县北川河流域不同时间序列的退耕地的土壤,进行了系统的对比研究.研究结果表明: 土壤质量综合指数值为坡耕地34.0%＜弃耕地40.8%＜退耕地(3～10 a)63.6%＜退耕地(11～20 a)74.4%＜天然次生林地82.8%＜天然灌丛地90.6%.随着时间的延续,退耕地土壤理化性质将会得到明显改善,土壤质量会逐步得到提高.

关键词：退耕还林土壤质量评价

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Simulation research on the energy dissipation and shock absorption performance of a swing column device based on fuzzy control

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Earthquake Engineering and Engineering Vibration 2022年第4期21卷 987-998页

作者： Zheng yong yuan Bo Research Center of Space Structures Guizhou UniversityGuiyang 550004China College of Civil Engineering Guizhou UniversityGuiyang 550004China Key Laboratory of Structural Engineering of Guizhou Province Guiyang 550025China

Double-column bridge piers are prone to local damage during earthquakes,leading to the destruction of *** improve the earthquake resistance of double-column bridge piers,a novel swing column device(SCD),consisting of a magnetorheological(MR)damper,a current controller,and a swing column,was designed for the present *** verify the seismic energy dissipation ability of the SCD,a lumped mass model for a double-column bridge pier with the SCD was established according to the low-order modeling method proposed by ***,the motion equation of the double-column bridge pier with the SCD was established based on the D′Alembert principle and solved with the use of computational *** was found that the displacement response of the double-column bridge pier was effectively controlled by the ***,due to rough current selection and a time delay,there is a significant overshoot of the bridge acceleration using ***,to solve the overshoot phenomenon,a current controller was designed based on fuzzy logic *** was found that the SCD design based on fuzzy control provided an ideal shock absorption effect,while reducing the displacement and acceleration of the bridge pier by 36.43%‒40.63%and 30.06%‒33.6%,respectively.

关键词： swing column device double-column bridge pier fuzzy control MR damper structural control low-element modeling method

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