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Spectral blueshift as a three-dimensional structure-ordering process

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Frontiers of physics 2017年第3期12卷 101-105页

作者： Jun-Ying huang zu-Hui Wu Ji-Ping huang Department of Physics State Key Laboratory of Surface Physics and Key Laboratory of Micro and Nano Photonic Structures (MOE) Fudan University Shanghai 200433 China Collaborative Innovation Center of Advanced Microstructures Nanjing 210093 China

The transmission spectra of a TiO2-silicone oil suspension in an increasing external electric field are studied. As the electric field increases, the structure of the suspension changes from a disordered one to an ordered one. Interestingly, the transmission spectra blueshift in this structure-ordering process. Furthermore, the relative transmission spectra exhibit Fano-like asymmetric line shapes. The deviation ratio of each asymmetric line shape increases monotonously as the disorder of the suspension decreases. We suggest that this blueshift phenomenon can be used to characterize the disorder strength of three- dimensional systems.

关键词： disordered medium light propagation transmission spectrum blueshift

Multiparty Quantum Secret Sharing Using Quantum Fourier Transform

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Communications in Theoretical Physics 2009年第2期51卷 221-226页

作者： huang Da-zu CHEN Zhi-Gang GUO Ying School of Information Science Engineering Central South University Changsha 410083 China Department of Information Management Hunan College of Finance and Economics Changsha 410205 China

A （n, n）-threshold scheme of multiparty quantum secret sharing of classical or quantum message is proposed based on the discrete quantum Fourier transform. In our proposed scheme, the secret message, which is encoded by using the forward quantum Fourier transform and decoded by using the reverse, is split and shared in such a way that it can be reconstructed among them only if all the participants work in concert. Fhrthermore, we also discuss how this protocol must be carefully designed for correcting errors and checking eavesdropping or a dishonest participant. Security analysis shows that our scheme is secure. Also, this scheme has an advantage that it is completely compatible with quantum computation and easier to realize in the distributed quantum secure computation.

关键词： quantum secret sharing quantum Fourier transform quantum error correction code

Searching for isotropic stochastic gravitational-wave background in the international pulsar timing array second data release

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Communications in Theoretical Physics 2022年第10期74卷 83-88页

作者： zu-Cheng Chen Yu-Mei Wu Qing-Guo huang CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesNo.19A Yuquan RoadBeijing 100049China Department of Astronomy Beijing Normal UniversityBeijing 100875China Advanced Institute of Natural Sciences Beijing Normal UniversityZhuhai 519087China School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China

We search for isotropic stochastic gravitational-wave background(SGWB)in the International Pulsar Timing Array second data *** modeling the SGWB as a power-law,we find very strong Bayesian evidence for a common-spectrum process,and further this process has scalar transverse(ST)correlations allowed in general metric theory of gravity as the Bayes factor in favor of the ST-correlated process versus the spatially uncorrelated common-spectrum process is 30±*** median and the 90%equal-tail amplitudes of ST mode are A_(ST)=1.29^(+0.51)_(−0.44)×10^(−15),or equivalently the energy density parameter per logarithm frequency isΩSTGW=2.31^(+2.19)_(−1.30)×10^(−9),at frequency of 1 year−***,we do not find any statistically significant evidence for the tensor transverse(TT)mode and then place the 95%upper limits as A_(TT)<3.95×10^(−15),or equivalentlyΩ^(TT)_(GW)<2.16×10^(−9),at frequency of 1 year^(−1).

关键词： stochastic gravitational-wave background pulsar timing array beyond general relativitiy

Sliding Wear of the Hybrid Kevlar/PTFE Fabric Reinforced Phenolic Composite Filled with Nano-titania

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Chinese Journal of Mechanical Engineering 2011年第1期24卷 154-159页

作者： YANG Yulin huang Shijun zu Dalei ZHANG Ruijun QI Xiaowen Key Laboratory of Fundamental Science of Mechanical Structure and Material Science under Extreme Condition for National Defence Yanshan University Qinhuangdao 066004 China State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao 066004 China

The Kevlar/polytetrafluroethylene（Kevlar/PTFE） fabric composite can be used as a self-lubricating liner of the self-lubricating *** types of nano-particles can improve the tribological performance of the polymer-based ***,up to now,published work on the effect of nano-particles on the tribological performance of the fabric composite which can be used as a self-lubricating liner is quite ***,for the purpose of exploring a way to significantly improve the tribological performance of the fabric composite,the tribological performance of the Kevlar/PTFE fabric composite filled with nano-titania is evaluated by using the block-on-ring wear *** scanning electron microscopy is utilized to observe the morphologies of worn surfaces of the fabric composites and the *** tensile properties of the composites are evaluated on the universal material testing *** test results show that the addition of nano-titania at a proper mass fraction of the matrix resin improves the wear resistance and the tensile strength,decreases the friction coefficient,and makes the wear volume of the composite reach a relative steady state more quickly;plastic deformation and microcutting are important for the wear of the fabric composite;a lubricating layer is formed on the worn surface of the composite during sliding,and the lubricating layer is critical for the tribological performance of the composite;the formation and properties of the lubricating layer are influenced by the nano-titania *** proposed study on the effect of nano-titania on the tribological performance of the Kevlar/PTFE fabric composite,especially on the evolution of the worn surface of the composite,provides the basis for further understanding of the influence mechanism of the nano-particles on the tribological performance of the composite and explores a method of improving the tribological performance of the composite.

关键词： hybrid Kevlar/PTFE fabric composite self-lubricating liner nano-titania friction and wear lubricating layer

Measuring the tilt of primordial gravitational-wave power spectrum from observations

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Science China(Physics,Mechanics & Astronomy) 2019年第11期62卷 135-137页

作者： Jun Li zu-Cheng Che Qing-Guo huang CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Synergetic Innovation Center for Quantum Effects and Applications Hunan Normal UniversityChangsha 410081China

Primordial gravitational waves (GWs) encode the information about inflation [1], and the power spectrum of primordial GWs have attracted a lot of attentions. There are in general two crucial properties for the primord... 详细信息

关键词： PTA BK Measuring the tilt of primordial gravitational-wave power spectrum from observations

Quantum Secure Direct Intercommunication with Superdense Coding and Entanglement Swapping

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Communications in Theoretical Physics 2008年第12期50卷 1290-1294页

作者： huang Da-zu GUO Ying ZENG Gui-Hua School of Information Science ＆ Engineering Central South University Changsha 410083 China Department of Information Management Hunan College of Finance ＆ Economics Changsha 410205 China State Key Laboratory on Fiber-Optic Local Area Networks and Advanced Optical Communication Systems Department of Electronic Engineering Shanghai Jiaotong University Shanghai 200240 China

A quantum secure direct intercommunication scheme is proposed to exchange directly the communicators＇ secret messages by making ase of swapping entanglement of Bell states. It has great capacity to distribute the secret messages since these messages have been imposed on high-dimensional Bell states via the local unitary operations with superdense coding. The security is ensured by the secure transmission of the travel sequences and the application of entanglement swapping.

关键词： quantum secure direct intercommunication entanglement swapping quantum cryptography

Transcriptome-based insights into the calcium transport mechanism of chick chorioallantoic membrane

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Food Science and Human Wellness 2022年第2期11卷 383-392页

作者： Qun huang Ran Yang qia Wang Hui Teng Hongbo Song Fang Geng Peng Luo School of Public Health The Key Laboratory of Environmental Pollution Monitoring and Disease ControlMinistry of EducationGuizhou Medical UniversityGuiyang 550025China College of Food Science Fujian Agriculture and Forestry UniversityFuzhou 350002China Meat Processing Key Laboratory of Sichuan Province School of Food and Biological EngineeringChengdu UniversityChengduSichuan 610106China

Chorioallantoic membrane(CAM)is responsible for respiratory gas exchange,eggshell calcium transport,embryonic acid-base equilibrium,allantoic ion,and water reabsorption during avian embryonic *** further understand the timing of CAM gene expression during chick embryonic development,especially the calcium absorption mechanism,transcriptome quantitative comparative analysis was conducted on chick CAM during the embryonic period(E)of 9,13,17,and 20 days.A total of 6378 differentially expressed genes(DEGs)were *** enrichment analysis of DEGs showed that CAM DEGs were mainly involved in biological processes such as"ion transport regulation","immune response"and"cell cycle".Time series analysis of the differential genes showed that the functional cells of CAM began to proliferate and differentiate at E9 and the calcium content of egg embryo increased significantly at ***,the observation of the ultrastructure of the eggshell showed that the interstice of the fiber layer was enlarged at E13,and the mastoid layer was partly ***,it is preliminarily inferred that CAM calcium transport starts at E13,and genes such as TRPV6,S100 A10,and RANKL cooperate to regulate calcium release and transport.

关键词： Incubation Chorioallantoic membrane Transcriptome Calcium transport

Study on liquid-filled structure target with shaped charge vertical penetration

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Defence Technology（防务技术） 2019年第6期15卷 861-867页

作者： Min Guo Xu-dong zu Xiao-jun Shen Zheng-xiang huang School of Mechanical Engineering Nanjing University of Science and TechnologyXiaolingwei 200Nanjing 210094China Unit 63961 Peoples Liberation Army6th Beiyuan RoadChaoyang Beijing100012China

Based on the characteristic expanded hole of a shaped charge jet(SCJ) for target penetration and the reflow characteristics of liquids,the liquid-filled structure of a target disturbs the stability of the SCJ acquired in two independent *** interference jet speed interval,the escape jet speed interval,and the surplus depth are calculated on the basis of the virtual origin *** experimental results,including the velocity of the escaped jet tip and the surplus depth of penetration,are consistent with the theoretical *** show that the theory can describe the interaction process of the target with a shaped charge jet.

关键词： Shaped charge Liquid-filled structure target Disturbed jet Escape jet

Interference-Limited Device-to-Device Multi-User Cooperation Scheme for Optimization of Edge Networking

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Journal of Computer Science & Technology 2016年第6期31卷 1096-1109页

作者： Hong-Cheng huang Jie Zhang zu-Fan Zhang Zhong-Yang Xiong College of Computer Science Chongqing University Chongqing 400044 China School of Communication and Information Engineering Chongqing University of Posts and Telecommunications Chongqing 400065 China

Device-to-device （D2D） communication is an emerging technology for improving cellular networks, which plays an important role in realizing Internet of Things （IoT）. The spectrum efficiency, energy efficiency and throughput of network can be enhanced by the cooperation among multiple D2D users in a self-organized method. In order to limit the interference of D2D users and load off the energy consumption of D2D users without decreasing communication quality, an interference- limited multi-user cooperation scheme is proposed for multiple D2D users to solve the energy problem and the interference problem in this paper. Multiple D2D users use non-orthogonal spectrums to form clusters by self-organized method. Multiple D2D users are divided into different cooperative units. There is no interference among different cooperative units so as to limit the interference of each D2D user in cooperative units. When the link capacity cannot meet the requirements of the user rate, it will produce an interrupt event. In order to evaluate the communication quality, the outrage probability of D2D link is derived by considering link delay threshold, data rate and interference. Besides the energy availability and signal-to-noise ratio （SNR） of each D2D user, the distance between D2D users is considered when selecting the relaying D2D users so as to enhance the signal-to-interference-plus-noise ratio （SINR） of D2D receiving users. Combining the derived outrage probability, the relationships among the average link delay threshold, the efficiency of energy and the efficiency of capacity are studied. The simulation results show that the interference-limited multiple D2D users cooperation scheme can not only help to offioad energy consumption and limit the interference of D2D users, but also enhance the efficiency of energy and the efficiency of capacity.

关键词： device-to-device (D2D) user cooperation relay selection efficiency of energy efficiency of capacity Internetof Things (IoT)