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35篇 您的检索式:作者名="GUAN Zhiqiang"
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1Tolerance analysis of multiple-element linear retrodirective cross-eye jamming显示文摘Tolerance sensitivity limits the practical application of the cross-eye jammer.Previous literature has demonstrated that retrodirective cross-eye jamming with multiple antenna elements possesses the advantage of loose tolerance requirements compared to traditional cross-eye jamming.However,the previous analysis was limited,because there are still some factors affecting the parameter tolerance of the multiple-element retrodirective cross-eye jamming(MRCJ)system and they have not been investigated completely,such as the loop difference,the baseline ratio and the jammer-to-signal ratio.This paper performs a comprehensive tolerance analysis of the MRCJ system with a nonuniformspacing linear array.Simulation results demonstrate the tolerance effects of the above influence factors and give reasonable advice for easing tolerance sensitivity.LIU Tianpeng WEI Xizhang PENG Bo LIU Zhen SUN Bin GUAN Zhiqiang 2020Journal of Systems Engineering and Electronics2020,31,3:7
2Malus-metasurface-assisted polarization multiplexing显示文摘Polarization optics plays a pivotal role in diffractive,refractive,and emerging flat optics,and has been widely employed in contemporary optical industries and daily life.Advanced polarization manipulation leads to robust control of the polarization direction of light.Nevertheless,polarization control has been studied largely independent of the phase or intensity of light.Here,we propose and experimentally validate a Malus-metasurface-assisted paradigm to enable simultaneous and independent control of the intensity and phase properties of light simply by polarization modulation.The orientation degeneracy of the classical Malus’s law implies a new degree of freedom and enables us to establish a one-to-many mapping strategy for designing anisotropic plasmonic nanostructures to engineer the Pancharatnam–Berry phase profile,while keeping the continuous intensity modulation unchanged.The proposed Malus metadevice can thus generate a near-field greyscale pattern,and project an independent far-field holographic image using an ultrathin and single-sized metasurface.This concept opens up distinct dimensions for conventional polarization optics,which allows one to merge the functionality of phase manipulation into an amplitudemanipulation-assisted optical component to form a multifunctional nano-optical device without increasing the complexity of the nanostructures.It can empower advanced applications in information multiplexing and encryption,anti-counterfeiting,dual-channel display for virtual/augmented reality,and many other related fields.Liangui Deng Juan Deng Zhiqiang Guan Jin Tao Yang Chen Yan Yang Daxiao Zhang Jibo Tang Zhongyang Li Zile Li Shaohua Yu Guoxing Zheng Hongxing Xu Cheng-Wei Qiu Shuang Zhang 2020Light(Science & Applications)2020,9,1:7
3Genetic analysis and preimplantation genetic diagnosis of Chinese Marfan syndrome patients显示文摘Marfan syndrome (MFS)(OMIM 154700) is a relatively common autosomal dominant genetic disease that causes skeletal, ocular, and cardiovascular defects and was first described by a French pediatrician in 1896 (Bitterman and Sponseller, 2017). Its prevalence rate is 1/3000—1/5000, and more than 25% of cases are sporadic (Chiu et al., 2014). Studies have shown that about 90% of MFS is caused by variants in the fibrillin-1 gene (FBN1, OMIM 134797). FBN1, located on chromosome 15q21.1, encodes a macromolecular glycoprotein-fibrin 1, which aggregates to form microfibers in the extracellular matrix and distributes in various human connective tissues, such as periosteum, vessel wall, and crystal suspensor ligament. Variants in FNB1 have been reported in 65 exons, but the relationship between genotype and phenotype remains rather unclear (Sakai et al., 2016). Studies have also shown that patients with MFS and similar diseases may have variants in other related genes such as members of the transforming growth factor beta receptor (TGFBR) family (Mizuguchi et al., 2004;Sakai et al., 2006;Bolar et al., 2012;De Cario et al., 2018). For better prevention and treatment of MFS as well as for suspected MFS patients, there is a strong need for efficient genetic testing for early diagnosis and differential diagnoses of patients with related phenotypes (Aubart et al., 2018).Meng Qin Xiaohui Zhu Zhe Zhang Xuemin Li Zhiqiang Yan Yuqian Wang Shuo Guan Yihua He Wenxin Zhang Liying Yan Jie Qiao Xu Zhi 2019Journal of Genetics and Genomics2019,46,6:6
4Additive manufacturing alumina components with lattice structures by digital light processing technique显示文摘Digital light processing technique was applied to manufacture alumina ceramic parts with two types of lattice structure units, i.e. vertex interconnect structure and edge structure. The internal porosity of the unit is 40%. The printed parts were sintered and the grain size is about 1.1 μm. The bending strength of the vertex interconnect structure is much larger than that of the edge structure. Materials genome initiative(MGI) aims to digital design and intelligent manufacture for advanced components. This research shows us an example to achieve this goal.Qjngfeng Zeng Changhao Yang Dingyi Tang Jiayao Li Zhiqiang Feng Jiantao Liu Kang Guan 2019Journal of Materials Science & Technology2019,35,12:5
5Zero-order-free meta-holograms in a broadband visible range显示文摘The unwanted zero-order light accompanied by the birth of diffractive optical elements and caused mainly by fabrication errors and wavelength variations is a key factor that deteriorates the performance of diffraction-related optical devices such as holograms,gratings,beam shapers,beam splitters,optical diffusers,and diffractive microlenses.Here,inspired by the unique characteristic of nano-polarizer-based metasurfaces for both positive and negative amplitude modulation of incident light,we propose a general design paradigm to eliminate zero-order diffraction without burdening the metasurface design and fabrication.The experimentally demonstrated metahologram,which projects a holographic image with a wide angle of 70°×70°in the for field,presents a very low zero-order intensity(only 0.7%of the total energy of the reconstructed image).More importantly,the zero-orderfree meta-hologram has a large tolerance limit for wavelength variations(under a broadband illumination from520 to 660 nm),which brings important technical advances.The strategy proposed could significantly relieve the fabrication difficulty of metasurfaces and be viable for various diffractive-optics-related applications includingholography,laser beam shaping,optical data storage,vortex beam generation,and so on.RAO FU LIANGUI DENG ZHIQIANG GUAN SHENG CHANG JIN TAO ZILE LI GUOXING ZHENG 2020Photonics Research2020,8,5:5
6Highly luminescence manganese doped carbon dots显示文摘Heteroatom doped carbon dots(CDs)with distinct merits are of great attractions in various fields such as solar cells,catalysis,trace element detection and photothermal therapy.In this work,we successfully synthesized blue-fluorescence and photostability manganese-doped carbon dots(Mn-CDs)with a quantum yield up to 7.5%,which was prepared by a facile one-step hydrothermal method with sodium citrate and manganese chloride.The Mn-CDs is the high mono-dispersity,uniform spherical nanoparticles.The Mn element plays a critical role in achieving a high quantum yield in synthesis of carbon dots,which was confirmed by the structure analysis using XPS and FTIR.Spectroscopic investigations proved that the decent PLQY and luminescence properties of Mn-CDs are due to the heteroatom doped,oxidized carbon-based surface passivation.In addition,the Mn-CDs are demonstrated as promising fluorescent sensors for iron ions with a linear range of 0–500 μmol/L and a detection limit of2.1 nmol/L(turn-off),indicating their great potential as a fluorescent probe for chemical sensing.Shuangjiao Sun Qingwen Guan Yao Liu Bin Wei Yuanyuan Yang Zhiqiang Yu 2019Chinese Chemical Letters2019,30,5:4
7Probing the limits of plasmonic enhancement using a two-dimensional atomic crystal probe显示文摘Achieving larger electromagnetic enhancement using a nanogap between neighboring metallic nanostructures has been long pursued for boosting light–matter interactions.However,the quantitative probing of this enhancement is hindered by the lack of a reliable experimental method for measuring the local fields within a subnanometer gap.Here,we use layered MoS2 as a two-dimensional atomic crystal probe in nanoparticle-on-mirror nanoantennas to measure the plasmonic enhancement in the gap by quantitative surface-enhanced Raman scattering.Our designs ensure that the probe filled in the gap has a well-defined lattice orientation and thickness,enabling independent extraction of the anisotropic field enhancements.We find that the field enhancement can be safely described by pure classical electromagnetic theory when the gap distance is no<1.24 nm.For a 0.62 nm gap,the probable emergence of quantum mechanical effects renders an average electric field enhancement of 114-fold,38.4%lower than classical predictions.Wen Chen Shunping Zhang Meng Kang Weikang Liu Zhenwei Ou Yang Li Yexin Zhang Zhiqiang Guan Hongxing Xu 2018Light(Science & Applications)2018,7,1:4
8Genetic testing and PGD for unexplained recurrent fetal malformations with MAGEL2 gene mutation显示文摘Birth defects are caused by multiple factors,such as chromosome abnormality,environmental factors,and maternal factors.In this study,we focused on exploring the genetic causes of a non-consanguineous couple who suffered from four times of unsuccessful pregnancy due to unexplained recurrent fetal malformations with similar symptoms and normal chromosome copy number variations.Using trio-whole exome sequencing(trio-WES) for this couple and one of the affected fetuses,we found a mutation,c.1996 delC on the maternal imprinted gene MAGEL2 that was carried by the affected fetus and husband,leading to Schaaf-Yang syndrome.To screen this mutation,we further performed preimplantation genetic diagnosis(PGD) strategy followed by a gene pedigree validation and pathogenicity analysis.After the transfer of a PGD-screened embryo,a normal newborn without previous abnormal symptoms was born(February 15,2019).We present the first data that identified a pathogenic gene(MAGEL2 c.1996 delC) in a fetus with Schaaf-Yang syndrome in the EAS(East Asian) database and overcame this genetic defect by using processed PGD for this couple based on the WES results.Wei Guo Yanli Nie Zhiqiang Yan Xiaohui Zhu Yuqian Wang Shuo Guan Ying Kuo Wenxin Zhang Xu Zhi Yuan Wei Liying Yan Jie Qiao 2019Science China(Life Sciences)2019,62,7:4
9Identifying normal embryos from reciprocal translocation carriers by whole chromosome haplotyping显示文摘Reciprocal translocation is a chromosomal structural abnormality that arises when two non-homologous chromosomes rearrange and attach with each other, an incidence that occurs in about 1/500to 1/625 newborns (Mackie and Scriven, 2002). This event typically does not lead to any significant loss of genetic material, thus reciprocal translocation carriers do not exhibit any severeZhiqiang Yan Yuqian Wang Yanli Nie Xu Zhi Xiaohui Zhu Meng Qin Shuo Guan Yixin Ren Ying Kuo Di Chang Wei Chen Peng Yuan Liying Yan Jie Qiao 2018Journal of Genetics and Genomics2018,45,9:4
10Full scale experimental study of a small natural draft dry cooling tower for concentrating solar thermal power plant显示文摘Concentrating solar thermal power system can provide low carbon,renewable energy resources in countries or regions with strong solar irradiation.For this kind of power plant which is likely to be located in the arid area,natural draft dry cooling tower is a promising choice.To develop the experimental studies on small cooling tower,a 20 m high natural draft dry cooling tower with fully instrumented measurement system was established by the Queensland Geothermal Energy Centre of Excellence.The performance of this cooling tower was measured with the constant heat input of 600 kW and 840 kW and with ambient temperature ranging from 20 ℃ to 32 ℃.The cooling tower numerical model was refined and validated with the experimental data.The model of 1 MW concentrating solar thermal supercritical CO2 power cycle was developed and integrated with the cooling tower model.The influences of changing ambient temperature and the performance of the cooling tower on efficiency of the power system were simulated.The differences of the mechanism of the ambient temperature effect on Rankine cycle and supercritical CO2 Brayton cycle were analysed and discussed.Xiaoxiao Li Sam Duniam Hal Gurgenci Zhiqiang Guan Anand Veeraragavan 侯恩哲 2017建筑节能2017,45,5:4
11Searching for the Nano-Hertz Stochastic Gravitational Wave Background with the Chinese Pulsar Timing Array Data ReleaseⅠ显示文摘Observing and timing a group of millisecond pulsars with high rotational stability enables the direct detection of gravitational waves(GWs).The GW signals can be identified from the spatial correlations encoded in the times-of-arrival of widely spaced pulsar-pairs.The Chinese Pulsar Timing Array(CPTA)is a collaboration aiming at the direct GW detection with observations carried out using Chinese radio telescopes.This short article serves as a“table of contents”for a forthcoming series of papers related to the CPTA Data Release 1(CPTA DR1)which uses observations from the Five-hundred-meter Aperture Spherical radio Telescope.Here,after summarizing the time span and accuracy of CPTA DR1,we report the key results of our statistical inference finding a correlated signal with amplitude logA_(c)=-14.4_(-2.8)^(+1.0)for spectral index in the range ofα∈[-1.8,1.5]assuming a GW background(GWB)induced quadrupolar correlation.The search for the Hellings–Downs(HD)correlation curve is also presented,where some evidence for the HD correlation has been found that a 4.6σstatistical significance is achieved using the discrete frequency method around the frequency of 14 n Hz.We expect that the future International Pulsar Timing Array data analysis and the next CPTA data release will be more sensitive to the n Hz GWB,which could verify the current results.Heng Xu Siyuan Chen Yanjun Guo Jinchen Jiang Bojun Wang Jiangwei Xu Zihan Xue RNicolas Caballero Jianping Yuan Yonghua Xu Jingbo Wang Longfei Hao Jingtao Luo Kejia Lee Jinlin Han Peng Jiang Zhiqiang Shen Min Wang Na Wang Renxin Xu Xiangping Wu Richard Manchester Lei Qian Xin Guan Menglin Huang Chun Sun Yan Zhu 2023Research in Astronomy and Astrophysics2023,23,7:3
12Surface-enhanced Raman scattering on dual-layer metallic gratingstructures显示文摘Dual-layer Metallic grating(DMG)structures as surface-enhanced Raman scattering(SERS)substrates are studied using benzenethiol as the probe analyte.The DMG structure consists of a SiO2 grating and 100-nm-thick gold coating layers.An enhancement factor of 105 is achieved by optimizing the SiO 2 grating height within the range from 165 to 550 nm.The enhancement factor dependence on the SiO2 grating height is due to the surface plasmon excitation,which is dependent on the polarization of the incident light,and confirmed by finite difference time domain simulations.This study demonstrates the advantages of high uniformity,reproducibility and sensitivity in the DMG structures for SERS applications.GUAN ZhiQiang HAKANSON Ulf ANTTU Nicklas WEI Hong XU HongQi MONTELIUS Lars XU HongXing 2010Chinese Science Bulletin2010,55,24:3
13Real-time Raman detection by the cavity mode enhanced Raman scattering显示文摘Integrating surface enhanced Raman scattering (SERS) with microfluidics is the long-term goal for reduced volume,multiplex and automation fingerprint detection of biomolecules.High sensitivity,repeatability,stability,reusability and real-time detection are the performance goals of Raman detection in the aqueous solution environment.Here,we reported the study on cavity mode enhanced SERS detection of both surface-adsorbed molecules and non-surface-adsorbed molecules in the solution environment.The cavity modes had important influence on the SERS enhancement,especially for the non-surface adsorbed molecules.Uniform,repeatable,reusable and real-time Raman signal detection of the non-surface adsorbed Rhodamine 6G molecules was demonstrated.Our work is an important step for the practical on-chip microfluidic Raman detection applications.Yang Liu Xiaorui Tian Weiran Guo Wenqiang Wang Zhiqiang Guan Hongxing Xu 2019Nano Research2019,12,7:2
14Global Comprehensive Sensitivity Analysis of Arch Dam Construction Parameters Based on Orthogonal Experiment显示文摘The construction of arch dams exhibits high uncertainty. Sensitivity analysis of construction parameters is important for the design and optimization of dam construction duration. However, current research cannot fully consider the combined influences of multiple parameters on the total construction. To effectively analyze the duration of arch dam construction, this study proposes a global comprehensive sensitivity analysis method in view of the whole process of arch dam construction based on an orthogonal experiment. This method could comprehensively consider the influence of the construction parameters that may lead to the uncertainty of construction duration. In addition, this method is able to identify the key parameters that may have a significant effect on duration uncertainty and sums up the general rules of combined parameters' interaction effect, which provides a scientific basis for reasonable optimization of the duration of dam construction.Denghua Zhong Zhiqiang Chu Bingyu Ren Mengqi Zhao Tao Guan Wenshuai Song 2017Transactions of Tianjin University2017,23,5:1
15Bioelectrochemical acidolysis of magnesia to induce struvite crystallization for recovering phosphorus from aqueous solution显示文摘A novel struvite crystallization method induced by bioelectrochemical acidolysis of magnesia (MgO) was investigated to recover phosphorus (P) from aqueous solution using a dual-chamber microbial electrolysis cell (DMEC).Magnesium ion (Mg2+) in the anolyte was firstly confirmed to automatically migrate from the anode chamber to the cathode chamber,and then react with ammonium (NH4+) and phosphate (PO34-) in the catholyte to form struvite.Recovery efficiency of 17.8%-60.2% was obtained with the various N/P ratios in the catholyte.When MgO (low solubility under alkali conditions) was added into the anolyte,the bioelectrochemical acidolysis of MgO naturally took place and the released Mg2+ induced struvite crystallization in the cathode chamber for P recovery likewise.Besides,there was a strong linear positive correlation between the recovery efficiency and the MgO dosage (R2 =0.935),applied voltage (R2 =0.969) and N/P ratio (R2 =0.905).Increasing the applied voltage was found to enhance the P recovery via promoting the MgO acidolysis and the released Mg2+ migration,while increasing the N/P ratio in the catholyte enhanced the P recovery via promoting the struvite crystallization.Moreover,the electrochemical performance of the system was promoted due to more stable anolyte pH and lower pH gradient between the two chambers.Current density was promoted by 10%,while the COD removal efficiency was improved from 78.2% to 91.8% in the anode chamber.Zuobin Wang Jiao Zhang Xiao Guan Lu She Pengyu Xiang Siqing Xia Zhiqiang Zhang 2019Journal of Environmental Sciences2019,31,11:1
16Identification of metastasis associated proteins in human lung squamous carcinoma using two-dimensional difference gel electrophoresis and laser capture microdissection显示文摘Huixin Yao Zhiqiang Zhang Zhiqiang Xiao Yongheng Chen Cui li Pengfei Zhang Meixiang Li Yingfu Liu Yongjun Guan Yanhui Yu Zhuchu Chen 2008Lung Cancer2008,,1:1
17Subtle metastability of the layered magnetic topological insulator MnBi_(2)Te_(4) from weak interactions显示文摘Layered quantum materials can host interesting properties,including magnetic and topological,for which enormous computational predictions have been done.Their thermodynamic stability is much less visited computationally,which however determines the existence of materials and can be used to guide experimental synthesis.MnBi_(2)Te_(4) is one of such layered quantum materials that was predicted to be an intrinsic antiferromagnetic topological insulator,and later experimentally realized but in a thermodynamically metastable state.Jinliang Ning Yanglin Zhu Jamin Kidd Yingdong Guan Yu Wang Zhiqiang Mao Jianwei Sun 2020npj Computational Materials2020,,1:1
18基于落重试验的离散元多颗粒黏结建模技术显示文摘确定磨矿工艺参数以保证最佳的物料粒度分布是近年来矿物加工研究的热点,而矿物加工过程的物料粒度控制是提高选矿效率的关键。离散元法(DEM)仿真是研究物料破碎过程的有效方法,物料模型的构建对离散元仿真结果有显著影响。本文基于物料落重试验,提出了离散元仿真用多颗粒黏结模型关键参数颗粒组成和颗粒间黏结键参数值的设置方法。应用该方法对单块矿石进行了多颗粒黏结建模,通过离散元仿真冲击破碎过程,得到了单块矿石的破碎粒度分布。离散元仿真结果与落重试验得到的破碎粒度分布具有良好的一致性,表明该建模技术可以表征矿石物料的破碎特性,为破磨过程仿真提供了一种有效的物料建模方法。王晓 薛玉君 刘俊 杨纪昌 邹声勇 Zhiqiang GUAN 李济顺 2021中国有色金属学报2021,31,8:1
19Capillary electroosmosis properties of water lubricants with different electroosmotic additives under a steel-on-steel sliding interface显示文摘The process of lubricant penetration into frictional interfaces has not been fully established,hence compromising their tribological performance.In this study,the penetration characteristics of deionized water(DI water)containing an electroosmotic suppressant(cetyltrimethylammonium bromide(CTAB))and an electroosmotic promoter(sodium lauriminodipropionate(SLI)),were investigated using steel-onsteel friction pairs.The results indicated that the lubricant with electroosmotic promoter reduced the coefficient of friction and wear scar diameter,whereas that with an electroosmotic suppressant exhibited an opposite behavior compared with DI water.The addition of SLI promoted the penetration of the DI water solution,thus resulting in the formation of a thick lubricating film of iron oxide at the sliding surface.This effectively reduced the abrasion damage,leading to a lower coefficient of friction and wear loss.Bohua FENG Zhiqiang LUAN Tao ZHANG Jiawei LIU Xiaodong HU Jiju GUAN Xuefeng XU 2022Friction2022,10,7:1
20The effect of simulated weightlessness on brain response 显示文摘WEI Jinhe GUAN Zhiqiang YAN Gongdong 1989Scienta Sinica (Series B)1989,1,1:1
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