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Absorption behavior of lattice oxygen in Ce_(0.8)Y_(0.2)O_(2-δ) at intermediate temperature

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Journal of Rare Earths 2018年第6期36卷 630-634页

作者： Chencen Sun Guanzhong He liangchao gao Shaolei Song Rong Li Qiang Zhen Nano Science and Technology Research Center Shanghai University School of Materials Science and Engineering Shanghai University

The absorption behavior of lattice oxygen for Ce0.8Y0.2O2-δ(YDC) crystal was investigated. Combined with TG-DSC, XRD, Raman and XPS characterization, lattice oxygen absorption occurs at intermediate temperature(from 500 to 800 ℃),which is related to the oxygen vacancies consumption,and no phase change is observed in this process. In electric conductivity relaxation(ECR) experiment, prolonged oxygen diffusion process is observed above 600 ℃, which may be caused by oxygen absorption process. And through ECR experiments,the bulk diffusion coefficient Dchemand surface exchange coefficient Kexfor YDC dense sample are measured as 6,5×10-5-2×10-4cm2/s and Kex=2×10-4-9×10-4cm/s at intermediate temperature range.

关键词： Y doped CeO_2 ECR XPS Oxygen vacancies Oxygen absorption Rare earths

基于CNN的伺服机械张力自动化控制系统设计

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电子设计工程 2025年第3期33卷 83-86,91页

作者：高良超南盟王卓张新宇中国船舶集团有限公司第七〇三研究所黑龙江哈尔滨150010

伺服张力水平过高会加速机械设备的老化速度,从而对机械元件的使用寿命造成影响。该文设计的基于CNN的伺服机械张力自动化控制系统,联合机械驱动电机,建立伺服控制电路,调节自动化控制传感器的实时运行状态;在CNN网络结构中,联合实时运... 详细信息

伺服张力水平过高会加速机械设备的老化速度,从而对机械元件的使用寿命造成影响。该文设计的基于CNN的伺服机械张力自动化控制系统,联合机械驱动电机,建立伺服控制电路,调节自动化控制传感器的实时运行状态;在CNN网络结构中,联合实时运行状态,计算并控制机械张力,完成自动化控制软件设计。实验结果表明,该系统可将伺服机械张力控制在负载压力的30%以下,不会因伺服张力水平过高而造成机械设备快速老化的问题,能够维持机械元件使用寿命。

关键词： CNN网络伺服机械张力控制自动化系统驱动电机控制传感器

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基于机器人的复合材料缠绕策略优化

复合材料学报 2016年第6期33卷 1318-1326页

作者：许家忠杨海高良超于立英王燕哈尔滨理工大学自动化学院哈尔滨150080 哈尔滨理工大学机械动力工程学院哈尔滨150080 中国船舶重工集团公司第703研究所试验研究事业部哈尔滨150080

基于机器人的复合材料缠绕不同缠绕策略会对缠绕工艺及机器人运动稳定性产生影响,为获得使机器人运动稳定性更优的缠绕策略,研究了6自由度工业机器人的复合材料缠绕工作站,单独分析了包络形式、悬纱长度以及测地线/非测地线缠绕等参数... 详细信息

基于机器人的复合材料缠绕不同缠绕策略会对缠绕工艺及机器人运动稳定性产生影响,为获得使机器人运动稳定性更优的缠绕策略,研究了6自由度工业机器人的复合材料缠绕工作站,单独分析了包络形式、悬纱长度以及测地线/非测地线缠绕等参数对缠绕工艺及机器人运动稳定性的变化参数的影响,采用MATLAB进行不同缠绕策略的机器人缠绕轨迹计算,确定规划后的缠绕轨迹,基于ADAMS和MATLAB进行机器人缠绕动力学联合仿真,获取机器人各关节力矩曲线,分析规划后的缠绕轨迹对机器人运动稳定性的影响。进行了复合材料制品干纤维缠绕实验,缠绕实验表明:采用优化后的缠绕策略进行复合材料制品缠绕时缠绕线型稳定,缠绕过程无滑纱、交叠、架空等现象,缠绕精度完全满足设计要求。

关键词：复合材料机器人缠绕策略联合仿真优化

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复合材料管道连续编织–缠绕–拉挤工艺研究

工程塑料应用 2015年第9期41卷 60-65页

作者：许家忠李强高良超张思博哈尔滨理工大学哈尔滨150080 中国船舶重工集团公司第703研究所哈尔滨150078

提出一种连续编织–缠绕–拉挤工艺,通过分析拉挤前后复合材料管道的几何结构,得出编织层纱束与缠绕层纱束在经过拉挤成型模具前后线型的变化关系,给出满足制品各层纤维均匀受力的编织–缠绕–拉挤工艺的线型设计要求;考虑缠绕层、编织... 详细信息

提出一种连续编织–缠绕–拉挤工艺,通过分析拉挤前后复合材料管道的几何结构,得出编织层纱束与缠绕层纱束在经过拉挤成型模具前后线型的变化关系,给出满足制品各层纤维均匀受力的编织–缠绕–拉挤工艺的线型设计要求;考虑缠绕层、编织层进入拉挤成型模具前后的线型变化关系和管道的设计要求,分别设计缠绕线型和编织线型;按设计的线型试制多种规格的复合材料管道,通过对比分析理论纱束角度与实际测量值,发现同一直径的管道,编织角的误差小于缠绕角的误差,两者均控制在1.5o以内,角度误差率均小于3%,且误差均随管道厚度的增大而减小,管道直径越大,编织角与缠绕角越接近实际值。通过分析管道试件的超声波扫描图,管道无明显缺陷,纱束间无明显细缝,证明设计的纱束线型变化合理。

关键词：复合材料管道编织-缠绕-拉挤工艺线型设计

Local magnetic moment oscillation around an Anderson impurity on graphene

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Science China(Physics,Mechanics & Astronomy) 2025年第1期68卷 188-197页

作者： Shuai Li Zhen Ma Jin-Hua gao School of Science Hebei University of Science and TechnologyShijiazhuang 050018China School of Electronics and Information Zhengzhou University of Light IndustryZhengzhou 450002China School of Physics and Wuhan National High Magnetic Field Center Huazhong University of Science and TechnologyWuhan 430074China

We theoretically investigate the spin resolved Friedel oscillation(FO)and quasiparticle interference(QPI)in graphene induced by an Anderson *** the impurity becomes magnetic,the resulted FO becomes spin dependent,which gives rise to a local magnetic moment oscillation with an envelop decaying as r^(-2) in real space in the doping ***,at half filling,the electron density and local magnetic moment will not oscillate but decay as r^(-3).Such spin resolved FO has both sublattice and spin ***,the local magnetic moment decay at half filling only occurs at one sublattice of graphene,which is quite like the phenomenon observed in the STM experiment(***ález-Herrero et al.,Science 352,437(2016)).We further give an analytic formula about such spin dependent FO based on the stationary phase ***,we study the interference of quasiparticles around the magnetic impurity by calculating the spin dependent Fourier-transformed local density of states(FT-LDOS).Our work gives a comprehensive understanding about the local magnetic moment oscillation around an Anderson impurity on graphene.

关键词： Friedel oscillation local magnetic moment graphene Anderson impurity

ARF4 acting upstream of LBD16 promotes adventitious root formation in peach

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Horticultural Plant Journal 2025年第1期11卷 145-161页

作者： Jingjing Liu Lingling gao Ruoxi Zhang Anqi gao Zamith Kerubo Oginga Beibei Zheng Yuepeng Han CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical GardenThe Innovative Academy of Seed Design of Chinese Academy of SciencesWuhanHubei 430074China Hubei Hongshan Laboratory WuhanHubei 430070China University of Chinese Academy of Sciences Beijing 100049China

Although class A auxin response factors(ARFs)are known to regulate adventitious root(AR)development through the canonical SCFTIR1-Aux/IAA-ARF signaling pathway,the regulatory role of class B ARFs in AR development remains largely ***,this research focused on the role of class B ARF transcription factors in peach(Prunus persica‘Shengli')adventitious root ***,we report the role of a class B ARF gene Pp ARF4 in adventitious root formation in *** transcriptome and q RT-PCR analyses showed that the transcription of Pp ARF4 was significantly up-regulated in auxin-treated stem explants.Y2H assay showed that Pp ARF4 had no interaction with Pp IAAs(AUXIN/INDOLE ACETIC ACIDs).Pp ARF4 could bind the promoters of lateral root development gene Pp LBD16 and auxin transport gene Pp PIN1 to activate their *** overexpression of Pp ARF4 and Pp LBD16 in Arabidopsis promoted AR ***,Pp ARF4 could act as a negative regulator of flavone synthesis and thus prevent the explants from *** results not only provide novel insights into the functions of ARFs in regulating plant growth and development,but will also be useful for fulfilling asexual propagation by stem cuttings in peach.

关键词： Prunus persica Adventitious root Auxin Pp ARF4 Pp LBD16

Cross-subcarrier precoder design for massive MIMO-OFDM downlink with symplectic optimization

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Science China(Information Sciences) 2025年第2期68卷 216-229页

作者： Yuxuan ZHANG An-An LU Xiang-Gen XIA Xiqi gao National Mobile Communications Research Laboratory Southeast University Purple Mountain Laboratories Department of Electrical and Computer Engineering University of Delaware

We propose a cross-subcarrier precoder design(CSPD) for massive multiple-input multiple-output(MIMO) orthogonal frequency division multiplexing(OFDM) downlink. This work aims to significantly improve the channel estimation and signal detection performance by enhancing the smoothness of the frequency domain effective channel. This is accomplished by designing a few vectors known as the transform domain precoding vectors(TDPVs), which are then transformed into the frequency domain to generate the precoders for a set of subcarriers. To combat the effect of channel aging, the TDPVs are optimized under imperfect channel state information(CSI). The optimal precoder structure is derived by maximizing an upper bound of the ergodic weighted sum-rate(WSR) and utilizing the a posteriori beam-based statistical channel model(BSCM). To avoid the large-dimensional matrix inversion, we propose an algorithm with symplectic optimization. Simulation results indicate that the proposed cross-subcarrier precoder design significantly outperforms conventional methods.

关键词： massive MIMO-OFDM cross subcarrier precoder design transform domain precoding vectors effective channel symplectic optimization

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Strategies for efficient enrichment of anaerobic ammonia oxidizing bacteria in activated sludge

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Journal of Environmental Sciences 2025年第5期151卷 703-713页

作者： Bin Tang Jin Wang Xingdong gao Zhihua Li Key Laboratory of Northwest Water Resource Environmentand EcologyMOESchool of Environmental and Municipal EngineeringXi’an University of Architecture and TechnologyXi’an 710055China Xi’an Key Laboratory of Intelligent Equipment Technology for Environmental Engineering Xi’an University of Architecture and TechnologyXi’an 710055China

Anaerobic ammonia oxidation(Anammox)is an economical and sustainablewastewater nitrogen removal technology,and its application in the mainstream process is the inevitable trend of the development of ***,how to effectively enriching Anammox bacteria from the activated sludge remains challenging and restricts its extensive *** this study,the rapid and efficient enrichment of Anammox bacteriawas achieved by raising the reflux ratio and nitrogen loading rate(NLR)using conventional activated sludge as the *** the screening phase(days 1–90),the reflux ratio was increased to discharge partial floc sludge,resulting in the relative abundance of Candidatus Brocadiaceae increased from0.04%to 22.54%,which effectively reduced thematrix and spatial competition between other microorganisms and Anammox *** day 90,the stoichiometric ratio of the Anammox process closely approached the theoretical value of 1:1.32:0.26,indicating that the Anammox reaction was the primary nitrogen removal process in the *** the enrichment phase(days 91–238),the NLR increased from 0.43 to 1.20 kgN/(m^(3)·d)and removal efficiency was 71.89%,resulting in the relative abundance of Candidatus Brocadiaceae increased to 61.27%on day *** reactor operated steadily from days 444 to 498,maintaining the nitrogen removal rate(NRR)of 3.00 kgN/(m^(3)·d)and achieving successful sludge granulation with the particle size of 392.4μ*** short,this study provided a simple and efficient approach for enriching Anammox bacteria from the activated sludge,supporting to start an Anammox process efficiently.

关键词： Anammox Activated sludge Enrichment Nitrogen removal Strategy

MetaCoorNet: an improved generated residual network for grasping pose estimation

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Science China(Information Sciences) 2025年第03期68卷 242-257页

作者： Hejia gao Chuanfeng HE Junjie ZHAO Changyin SUN School of Artificial Intelligence Anhui University Engineering Research Center of Autonomous Unmanned System Technology Ministry of Education Anhui Provincial Key Laboratory of Security Artificial Intelligence Anhui University School of Automation Southeast University

Robotic grasping presents significant challenges due to variations in object properties, environmental complexities,and the demand for real-time operation. This study proposes the MetaCoorNet(MCN), which is a novel deep learning architecture specifically designed to address these challenges in robotic grasping pose estimation. By combining spatial and channel operators, the MetaCoor block is utilized to extract features efficiently. This architecture enhances feature selectivity by embedding location information into channel attention using a positional embedding technique within the coordinate attention mechanism. Consequently, the proposed MCN can focus on pertinent grasp-related regions. Furthermore, convolutional fusion blocks seamlessly integrate spatial and channel features, resulting in enhanced feature resolution and representation *** innovative design enables the proposed MCN to achieve state-of-the-art performance on the Cornell and Jacquard datasets,attaining accuracies of 98% and 91.2%, respectively. The effectiveness and robustness of MCN are further validated through real-world experiments conducted using a seven-degree-of-freedom Kinova manipulator.

关键词： generative ResNet meta light block coordinate attention feature resolution robot grasping

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