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69篇 您的检索式:作者名="Xingjun Wang"
    题名 作者 年代 出处 被引量
1Overcoming HBV immune tolerance to eliminate HBsAg-positive hepatocytes via pre-administration of GM-CSF as a novel adjuvant for a hepatitis B vaccine in HBV transgenic mice显示文摘尽管有矛盾的结果, Granulocyte 巨噬细胞刺激殖民地的因素(GM-CSF ) 从动物和人的研究被知道是一个潜在的疫苗的助手。差异可能由于被使用的 GM-CSF 的不同剂量和政体,给那成熟或不成熟的树枝状的房间(DC ) 能在不同条件下面被导致。为了测试假设,那 GM-CSF 能为一个肝炎 B 病毒(HBV ) 被用作一个新奇助手治疗学的疫苗,我们与 recombinant HBV 疫苗(rHBVvac ) 在种痘以前每天管理了 GM-CSF 一次三天在老鼠。我们在作为与白天 1 每日的 GM-CSF 管理或白天 2 相比的白天 3 点在这些预先对待的动物观察了更大的 DC 成熟。这策略进一步为它打破在肝炎 B 表面建立的有免疫力的忍耐的能力被调查抗原转基因(HBsAg-Tg ) 动物。我们发现导致的 anti-HBsAg 抗体的层次在在第三免疫以后在 rHBV 种痘前跟随三天 GM-CSF 预告的处理的动物是显著地更高的。除了 anti-HBsAg 抗体层次的增加,调停房间的 anti-HBsAg 回答包括延期类型超敏性, T 房间增长, interferon-γ生产,和细胞毒素的 T 淋巴细胞,戏剧性地在三天的 GM-CSF 被提高预先对待的组。在从使免疫的动物的 CD8 + T 房间的采纳转移以后,抗原特定的 CD8 + T 房间在接受者 HBsAg-Tg 动物的肝被观察。而且,有在 rHBVvac 种痘以前的 GM-CSF 的三天的预告的处理能显著地消除 HBsAg 积极的 hepatocytes,建议有益的治疗学的效果。因此,与 rHBVvac 疫苗在联合作为一个助手利用 GM-CSF 的这个协议有潜力为长期的肝炎 B 病人成为新奇免疫疗法。Xianzheng Wang Aihua Dong Jingjing Xiao Xingjun Zhou Haili Mi Hanqian Xu Jiming Zhang Bin Wang 2016Cellular & Molecular Immunology2016,13,6:11
2Insight into the temperature sensitivity of forest litter decomposition and soil enzymes in subtropical forest in China显示文摘Aims With the continuing increase in the impact of human activities on ecosystems,ecologists are increasingly interested in understanding the effects of high temperature on litter decomposition since litter decomposition and the accompanying release of nutrients and carbon dioxide are key processes in ecosystem nutrient cycling and carbon flux.This study was conducted to evaluate the temperature sensitivity of forest litter decomposition and soil enzymes during litter decomposition in subtropical forest in China.Methods Two dominant litter types were chosen from Zijin Mountain in China:Quercus acutissima leaves from a broadleaf forest(BF)and Pinus massoniana needles from a coniferous forest(CF).The litter samples were incubated in soil microcosms at ambient control temperature(20C)and 10C warmer.During a 5-month incubation,chemical composition of litter samples,litter mass losses,and related soil enzyme activities were determined.Important Findings Three main results were found:(i)high temperature accelerated decomposition rates of both litter types,and the temperature sensitivities of litter decomposition for BF leaves and that for CF needles are equivalent basically,(ii)high temperature enhanced soil enzyme activities in the two forest types,and the temperature sensitivities of polyphenol oxidase were significantly higher than those of the other soil enzymes and(iii)the temperature sensitivities of nitrate reductase were significantly higher in the CF soil than in the BF soil,while there was no significant difference in the temperature sensitivities of the other soil enzymes between BF and CF.As a long-term consequence,the high-temperature-induced acceleration of litter decomposition rates in these subtropical forests may cause carbon stored belowground to be transferred in the atmosphere,which may alter the balance between carbon uptake and release,and then alter the global carbon cycle in the coming decades.Congyan Wang Guomin Han Yong Jia Xiaoguang Feng Xingjun Tian 2012Journal of Plant Ecology2012,5,3:8
3Recent progress of integrated circuits and optoelectronic chips显示文摘Integrated circuits(ICs)and optoelectronic chips are the foundation stones of the modern information society.The IC industry has been driven by the so-called'Moore's law'in the past 60 years,and now has entered the post Moore's law era.In this paper,we review the recent progress of ICs and optoelectronic chips.The research status,technical challenges and development trend of devices,chips and integrated technologies of typical IC and optoelectronic chips are focused on.The main contents include the development law of IC and optoelectronic chip technology,the IC design and processing technology,emerging memory and chip architecture,brain-like chip structure and its mechanism,heterogeneous integration,quantum chip technology,silicon photonics chip technology,integrated microwave photonic chip,and optoelectronic hybrid integrated chip.Yue HAO Shuiying XIANG Genquan HAN Jincheng ZHANG Xiaohua MA Zhangming ZHU Xingxing GUO Yahui ZHANG Yanan HAN Ziwei SONG Yan LIU Ling YANG Hong ZHOU Jiangyi SHI Wei ZHANG Min XU Weisheng ZHAO Biao PAN Yangqi HUANG Qi LIU Yimao CAI Jian ZHU Xin OU Tiangui YOU Huaqiang WU Bin GAO Zhiyong ZHANG Guoping GUO Yonghua CHEN Yong LIU Xiangfei CHEN Chunlai XUE Xingjun WANG Lixia ZHAO Xihua ZOU Lianshan YAN Ming LI 2021Science China(Information Sciences)2021,64,10:7
4Insights into seasonal variation of litter decomposition and related soil degradative enzyme activities in subtropical forest in China显示文摘We used a litterbag method to investigate litter decomposition and related soil degradative enzyme activities across four seasons in a broad-leaved forest and a coniferous forest on Zijin Mountain in sub-tropical China.Across four seasons, we quantified litter mass losses,soil pH values, and related soil degradative enzyme activities.Litter decomposition rates differed significantly by season.Litter decomposition rates of broadleaf forest leaves were higher than for coniferous forests needles across four seasons, and maximal differences in litter decomposition rates between the two litter types were found in spring.Obvious differences in litter decomposition rates of the two litter types were found in winter, which were similar to rates in spring.Litter decomposition rates of the two litter types in autumn were significantly higher than in spring.Soil degradative enzyme activities were lowest in winter and highest in summer in most cases across four seasons.WANG Cong-yan Lü Yan-na WANG Lei LIU Xue-yan TIAN Xingjun 2013Journal of Forestry Research2013,24,4:6
5A design method for high fabrication tolerance integrated optical mode multiplexer显示文摘The tapered asymmetric directional coupler has the potential to realize high fabrication tolerance and high transmission efficiency on-chip mode multiplexer.However,the geometry parameter selection of tapered structure remains empirical.In this paper,we propose a design method for the tapered structure based on genetic algorithm.Combined with the adjusted coupling equations and interpolation method,lowtime-cost optimization can be realized.Three mode multiplexers(TE0&TE1,TE0&TE2 and TE0&TE5)are designed by our method.According to simulation results,the insertion loss of the designed devices is lower than 1.8 dB and the crosstalk is lower than-15 dB when the fabrication error is within required range(±10 nm for TE0&TE2 and TE0&TE5,and±20 nm for TE0&TE1)in the bandwidth of 1.5–1.6μm.In addition,the entire optimization process takes only 2 h for each device,which is around the time cost of a single 3 D simulation.Bitao SHEN Haowen SHU Linjie ZHOU Xingjun WANG 2020Science China(Information Sciences)2020,63,6:3
6Balancing the anionic framework polarity for enhanced thermoelectric performance in YbMg_(2)Sb_(2) Zintl compounds显示文摘1-2-2-type Zintl phase compound has aroused great interest for potential thermoelectric applications.However,YbMg_(2)Sb_(2) is seldom studied due to the very low electrical conductivity resulting from the large difference in the electronegativity between Mg and Sb.In this paper,we adjust the covalently bonded network of MgeSb by replacing part of the Mg with Zn which has the electronegativity closer to that of Sb.The decreased polarity in the anionic framework offers more free distance for electrons for the enhanced Hall mobility and electrical conductivity.Together with the increased point defect and the decreased lattice thermal conductivity by introduction of Zn,the maximum ZT value of ~0.8 at 773 K is achieved in YbMg_(0.9)Zn_(1.1)Sb_(2) which is~100% enhancement compared with that of YbMg_(2)Sb_(2).Zongwei Zhang Xinyu Wang Yijie Liu Chen Chen Honghao Yao Li Yin Xiaofang Li Shan Li Fan Zhang Fengxian Bai Jiehe Sui Bo Yu Feng Cao Xingjun Liu Jun Mao Guoqiang Xie Qian Zhang 2019Journal of Materiomics2019,5,4:3
7Particle swarm optimization and its application to seismic inversion of igneous rocks显示文摘In order to improve the fine structure inversion ability of igneous rocks for the exploration of underlying strata, based on particle swarm optimization(PSO), we have developed a method for seismic wave impedance inversion. Through numerical simulation, we tested the effects of different algorithm parameters and different model parameterization methods on PSO wave impedance inversion, and analyzed the characteristics of PSO method. Under the conclusions drawn from numerical simulation, we propose the scheme of combining a cross-moving strategy based on a divided block model and high-frequency filtering technology for PSO inversion. By analyzing the inversion results of a wedge model of a pitchout coal seam and a coal coking model with igneous rock intrusion, we discuss the vertical and horizontal resolution, stability and reliability of PSO inversion. Based on the actual seismic and logging data from an igneous area, by taking a seismic profile through wells as an example, we discuss the characteristics of three inversion methods, including model-based wave impedance inversion, multi-attribute seismic inversion based on probabilistic neural network(PNN) and wave impedance inversion based on PSO.And we draw the conclusion that the inversion based on PSO method has a better result for this igneous area.Yang Haijun Xu Yongzhong Peng Gengxin Yu Guiping Chen Meng Duan Wensheng Zhu Yongfeng Cui Yongfu Wang Xingjun 2017International Journal of Mining Science and Technology2017,27,2:3
8Towards an intelligent photonic system显示文摘The emerging intelligence technologies represented by deep learning have broadened their applications to various fields.Beyond the conventional electronics-based processing systems,the convergence of photonics and artificial intelligence(AI)technology enhances the performance and learning ability of AI.In this review,we propose the concept of an intelligent photonic system(IPS),illustrating it as a developing architecture with three different versions.For each version of IPS,we review several representative studies.Moreover we discuss the challenges towards an IPS and provide some prospects for the future development.Weiwen ZOU Bowen MA Shaofu XU Xiuting ZOU Xingjun WANG 2020Science China(Information Sciences)2020,63,6:3
9Towards silicon photonic neural networks for artificial intelligence显示文摘Brain-inspired photonic neural networks for artificial intelligence have attracted renewed interest.For many computational tasks,such as image recognition,speech processing and deep learning,photonic neural networks have the potential to increase the computing speed and energy efficiency on the orders of magnitude compared with digital electronics.Silicon Photonics,which combines the advantages of electronics and photonics,brings hope for the large-scale photonic neural network integration.This paper walks through the basic concept of artificial neural networks and focuses on the key devices which construct the silicon photonic neuromorphic systems.We review some recent important progress in silicon photonic neural networks,which include multilayer artificial neural networks and brain-like neuromorphic systems,for artificial intelligence.A prototype of silicon photonic artificial intelligence processor for ultra-fast neural network computing is also proposed.We hope this paper gives a detailed overview and a deeper understanding of this emerging field.Bowen BAI Haowen SHU Xingjun WANG Weiwen ZOU 2020Science China(Information Sciences)2020,63,6:3
10Fully integrated hybrid microwave photonic receiver显示文摘Microwave photonic receivers are a promising candidate in breaking the bandwidth limitation of traditional radio-frequency(RF)receivers.To further balance the performance superiority with the requirements regarding size,weight,and power consumption(SWa P),the implementation of integrated microwave photonic microsystems has been considered an upgrade path.However,up to now,to the best of our knowledge,chip-scale fully integrated microwave photonic receivers have not been reported due to the limitation of material platforms.In this paper,we report a fully integrated hybrid microwave photonic receiver(FIH-MWPR)obtained by comprising the indium phosphide(In P)laser chip and the monolithic silicon-on-insulator(SOI)photonic circuit into the same substrate based on the low-coupling-loss micro-optics method.Benefiting from the integration of all optoelectronic components,the packaged FIH-MWPR exhibits a compact volume of 6 cmand low power consumption of 1.2 W.The FIH-MWPR supports a wide operation bandwidth from 2 to 18 GHz.Furthermore,its RF-link performance to down-convert the RF signals to the intermediate frequency is experimentally characterized by measuring the link gain,the noise figure,and the spurious-free dynamic range metrics across the whole operation frequency band.Moreover,we have utilized it as a de-chirp receiver to process the broadband linear frequencymodulated(LFM)radar echo signals at different frequency bands(S-,C-,X-,and Ku-bands)and successfully demonstrated its high-resolution-ranging capability.To the best of our knowledge,this is the first realization of a chip-scale broadband fully integrated microwave photonic receiver,which is expected to be an important step in demonstrating the feasibility of all-integrated microwave photonic microsystems oriented to miniaturized application scenarios.JIACHEN LI SIGANG YANG HONGWEI CHEN XINGJUN WANG MINGHUA CHEN WEIWEN ZOU 2022Photonics Research2022,10,6:2
11Hybrid-integrated high-performance microwave photonic filter with switchable response显示文摘The integrated microwave photonic filter(MPF),as a compelling candidate for next-generation radio-frequency(RF)applications,has been widely investigated for decades.However,most integrated MPFs reported thus far have merely incorporated passive photonic components onto a chip-scale platform,while all necessary active devices are still bulk and discrete.Though few attempts to higher photonic integration of MPFs have been executed,the achieved filtering performances are fairly limited,which impedes the pathway to practical deployments.Here,we demonstrate,for the first time to our knowledge,an all-integrated MPF combined with high filtering performances,through hybrid integration of an In P chip-based laser and a monolithic silicon photonic circuit consisting of a dual-drive Mach–Zehnder modulator,a high-Q ring resonator,and a photodetector.This integrated MPF exhibits a high spectral resolution as narrow as 360 MHz,a wide-frequency tunable range covering the S-band to K-band(3 to 25 GHz),and a large rejection ratio of>40 d B.Moreover,the filtering response can be agilely switched between the bandpass and band-stop function with a transient respond time(48μs).Compared with previous MPFs in a similar integration level,the obtained spectral resolution in this work is dramatically improved by nearly one order of magnitude,while the valid frequency tunable range is broadened more than twice,which can satisfy the essential filtering requirements in actual RF systems.As a paradigm demonstration oriented to real-world scenarios,high-resolution RF filtering of realistic microwave signals aiming for interference rejection and channel selection is performed.Our work points out a feasible route to a miniaturized,high-performance,and cost-effective MPF leveraging hybrid integration approach,thus enabling a range of RF applications from wireless communication to radar toward the higher-frequency region,more compact size,and lower power consumption.YUANSHENG TAO HAOWEN SHU XINGJUN WANG MING JIN ZIHAN TAO FENGHE YANG JINGBO SHI JUN QIN 2021Photonics Research2021,9,8:2
12Role ofβ(FeA1)nanoparticles in abnormal grain growth in the annealing of cast Cu-Al-Mn-Fe shape memory alloys显示文摘In this study,the low-cost production of Cu-AI-Mn-Fe shape memory alloy single crystals exceeding 46 mm by abnormal grain growth was realized only through annealing their cast alloys.The results show that the mis-orientation formed during annealing may be responsible for such abnormal grain growth process.It was con-firmed that this misorientation resulted from the dissolution of bec B(FeAI)nanoparticles during heat treatment at a sufficiently temperature of approximately 1173 K.The rate of migration of the abnormal grain boundary was experimentally measured to be approximately9.3 x 10^-m s^-1within 2 min of the commencement of abnormal grain growth.Additionally,the range of composition of the alloys that can lead to abnormal grain growth was determined.When the Cu-13.0AI-6.5Mn-3.2Fe single crystal close to the[100]direction was deformed to a pre-strain of 12%,full shape recovery happened without any residual strain.At that time,the superelastic strain was approximately 9%.Such a superelastic characteristic remained nearly constant over 50 cycles,showing excellent fatigue resistance.The superelastic properties of the present Cu-13.0AI-6.5Mn-3.2Fe single crystal are compared to those of commercial Ni-Ti-based shape memory alloys.Therefore,it can be considered as a new kind of superelastic material having practical applications.The obtained results should be of great significance in the development of Cu based shape memory alloys.Furthermore,it is expected that a similar microstructure can be designed for the production of more metallic single crystals.Shuiyuan Yang Xinyu Qing Jixun Zhang Lipeng Guo Shen Hong Mingpei Li Jinbin Zhang Cuiping Wang Xingjun Liu 2020Progress in Natural Science:Materials International2020,30,4:2
13Phase Boundary Mapping in ZrNiSn Half-Heusler for Enhanced Thermoelectric Performance显示文摘The solubility range of interstitial Ni in the ZrNi1+xSn half-Heusler phase is a controversial issue,but it has an impact on the thermoelectric properties.In this study,two isothermal section phase diagrams of the Zr-Ni-Sn ternary system at 973K and 1173 K were experimentally constructed based on the binary phase diagrams of Zr-Ni,Zr-Sn,and Ni-Sn.The thermodynamic equilibrium phases were obtained after a long time of heating treatment on the raw alloys prepared by levitation melting.Solubilities of x<0:07 at 973 K and x<0:13 at 1173 K were clearly indicated.An intermediate-Heusler phase with a partly filled Ni void was observed,which is believed to be beneficial to the lowered lattice thermal conductivity.The highest ZT value~0:71 at 973 K was obtained for ZrNi_(1.11)Sn_(1.04).The phase boundary mapping provides an important instruction for the further optimization of ZrNiSn-based materials and other systems.Xiaofang Li Pengbo Yang Yumei Wang Zongwei Zhang Dandan Qin Wenhua Xue Chen Chen Yifang Huang Xiaodong Xie Xinyu Wang Mujin Yang Cuiping Wang Feng Cao Jiehe Sui Xingjun Liu Qian Zhang 2020Research2020,,1:2
14Thermodynamic database of the phase diagrams in the Mg-Al-Zn-Y-Ce system显示文摘The Mg-Al-Zn-Y-Ce system is one of the key systems for designing high-strength Mg alloys. The purpose of the present article is to develop a thermodynamic database for the Mg-Al-Zn-Y-Ce multicomponent system to design Mg alloys using the calculation of phase diagrams (CALPHAD) method, where the Gibbs energies of solution phases such as liquid, fcc, bcc, and hcp phases were described by the subregular solution model, whereas those of all the compounds were de- scribed by the sublattice model. The thermodynamic parameters describing Gibbs energies of the different phases in this database were evaluated by fitting the experimental data for phase equilibria and thermodynamic properties. On the basis of this database, a lot of information concerning stable and metastable phase equilibria of isothermal and vertical sections, mo- lar fractions of constituent phases, the liquidus projection, etc., can be predicted. This database is expected to play an im- portant role in the design of Mg alloys.LIU Xingjun WANG Cuiping WEN Mingzhong CHEN Xing PAN Fusheng 2006Rare Metals2006,25,5:2
15Optical coherent dot-product chip for sophisticated deep learning regression显示文摘Optical implementations of neural networks(ONNs)herald the next-generation high-speed and energy-efficient deep learning computing by harnessing the technical advantages of large bandwidth and high parallelism of optics.However,due to the problems of the incomplete numerical domain,limited hardware scale,or inadequate numerical accuracy,the majority of existing ONNs were studied for basic classification tasks.Given that regression is a fundamental form of deep learning and accounts for a large part of current artificial intelligence applications,it is necessary to master deep learning regression for further development and deployment of ONNs.Here,we demonstrate a silicon-based optical coherent dot-product chip(OCDC)capable of completing deep learning regression tasks.The OCDC adopts optical fields to carry out operations in the complete real-value domain instead of in only the positive domain.Via reusing,a single chip conducts matrix multiplications and convolutions in neural networks of any complexity.Also,hardware deviations are compensated via in-situ backpropagation control provided the simplicity of chip architecture.Therefore,the OCDC meets the requirements for sophisticated regression tasks and we successfully demonstrate a representative neural network,the AUTOMAP(a cutting-edge neural network model for image reconstruction).The quality of reconstructed images by the OCDC and a 32-bit digital computer is comparable.To the best of our knowledge,there is no precedent of performing such state-of-the-art regression tasks on ONN chips.It is anticipated that the OCDC can promote the novel accomplishment of ONNs in modern AI applications including autonomous driving,natural language processing,and scientific study.Shaofu Xu Jing Wang Haowen Shu Zhike Zhang Sicheng Yi Bowen Bai Xingjun Wang Jianguo Liu Weiwen Zou 2021Light(Science & Applications)2021,10,12:2
16Free radical scavenging and inhibition of lipid peroxidation by magnesium lithospermate B 显示文摘WU Xingjun WANG Yiping WANG Wei 2000Acta Pharmacological Sinica2000,21,9:1
17Equilibrium moisture content and sorption isosteric heats of five wheat varieties in China显示文摘Xingjun Li Zhiyang Cao Zhiyan Wei Qiyan Feng Jinshui Wang 2010Journal of Stored Products Research2010,,1:1
18Novel and durable composite phase change thermal energy storage materials with controllable melting temperature显示文摘The development of high temperature phase change materials(PCMs)with great comprehensive performance is significant in the future thermal energy storage system.In this study,novel and durable Al-Si/Al_(2)O_(3)-Al N composite PCMs with controllable melting temperature were successfully synthesized by using pristine Al powder as raw material and tetraethyl orthosilicate as SiO_(2)source.The Al_(2)O_(3)shell and Al-Si alloy were in-situ produced via the substitution reaction between molten Al and SiO_(2).Importantly,the crack caused by the incomplete encapsulation of the Al_(2)O_(3)shell could repair itself by the nitridation reaction of internal molten Al and thereby forming a highly dense Al_(2)O_(3)-Al N composite shell.The produced dense Al_(2)O_(3)-Al N composite shell could significantly improve the thermal cycling stability of composite PCMs,and thus,the thermal storage density decrease of the Al-Si/Al_(2)O_(3)-Al N(59.8 J/g to77.7 J/g)was far less than that of the Al-Si/Al_(2)O_(3)(118.5 J/g)after 3000 thermal cycles.Moreover,the synthesized Al-Si/Al_(2)O_(3)-Al N still exhibited a controllable melting temperature(571.5-637.9℃),relatively high thermal storage density(105.6-150.7 J/g),great dimensional stability and structural stability after3000 thermal cycles.Hence,the synthesized Al-Si/Al_(2)O_(3)-Al N composite PCMs,as promising preferential thermal energy storage materials,can be stably used in the energy utilization efficiency improvement of various systems for more than 6 years.Haiting Wei Shuiyuan Yang Cuiping Wang Changrui Qiu Kairui Lin Jiajia Han Yong Lu Xingjun Liu 2021Journal of Materials Science & Technology2021,,27:1
19Is Prehypertension Really Different from Normotension and Hypertension? A Case-Control Pilot Proteomic Study in Chinese显示文摘Zuoguang Wang Xiaoyun Peng Yanduo Tao Ya Liu Jieling Liu Xingjun Chen Shaojun Wen Zhaosu Wu 2009Clinical and Experimental Hypertension2009,,4:1
201-MCP对韭薹采后品质的影响显示文摘本文研究了在20℃贮藏条件下,1-MCP对韭薹贮藏品质及木质化的作用效果。结果表明,0.5μL·L-1的1-MCP可显著降低韭薹的失重率及开花率,保持较高的叶绿素及VC含量,抑制呼吸强度,降低苯丙氨酸解氨酶(PAL)、肉桂醇脱氢酶(CAD)及过氧化物酶(POD)的活性,延缓木质素和纤维素的积累。结果显示,1-MCP处理有利于韭薹采后品质的保持。Chuanwan Wu Xiaofeng Du Lianzhen Wang Weizhong Wang Qing Zhou Xingjun Tian 2010保鲜与加工2010,10,5:1
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