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Impacts of Defoliation on Morphological Characteristics and Non-Structural Carbohydrates of Populus talassica × Populus euphratica Seedlings

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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1689-1703页

作者： Mengxu Su Zhanjiang Han Zhen Zhao Xiaofeng wu jiaju wu College of Life Science and Technology Tarim UniversityXinjiang Production and Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim BasinAlar843300China Agricultural Science Research Institute of the First Division Xinjiang Production and Construction CorpsAlar843300China

Leaves are important‘source’organs that synthesize organic matter,providing carbon sources for plant ***,we used Populus talassica×Populus euphratica,the dominant species in ecological and timber forests,to simulate carbon limitation through artiﬁcial 25%,50%,and 75%defoliation treatments and explore the effects on root,stem,and leaf morphology,biomass accumulation,and carbon allocation *** the 60th d after treat-ment,under 25%defoliation treatment,the plant height,speciﬁc leaf weight,root surface area and volume,and concentrations of non-structural carbohydrates in stem and root were signiﬁcantly increased by 9.13%,20.00%,16.60%,31.95%,5.12%,and 9.34%,respectively,relative to the *** was no signiﬁcant change in the growth indicators under 50%defoliation treatment,but the concentrations of non-structural carbohydrates in the leaf and stem signiﬁcantly decreased,showing mostly a negative correlation between *** opposite was observed in the *** 75%defoliation treatment,the plant height,ground diameter,leaf number,single leaf area,root,stem,and total biomass were signiﬁcantly reduced by 14.15%,10.24%,14.86%,11.31%,11.56%,21.87%,and 16.82%,respectively,relative to the *** concentrations of non-structural carbohydrates in various organs were signiﬁcantly reduced,particularly in the consumption of the starch concentrations in the stem and *** results indicated that carbon allocation strategies can be adjusted to increase the con-centration of non-structural carbohydrates in root and meet plant growth needs under 25%and 50%***,75%defoliation signiﬁcantly limited the distribution of non-structural carbohydrates to roots and stems,reduced carbon storage,and thus inhibited plant ***-induced carbon limitation altered the carbon allocation pattern of ***×***,and the relationship between carbon reserves in roots and tree growth recovery after defoliation was *** study

关键词： Populus talassica×Populus euphratica defoliation carbon limitation carbon allocation non-structural carbohydrates

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Observation of accurately designed bound states in the continuum in momentum space

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Photonics Research 2024年第4期12卷 638-647页

作者： jiaju wu JINGGUANG CHEN XIN QI ZHIWEI GUO jiajuN WANG FENG wu YONG SUN YUNHUI LI HAITAO JIANG LEI SHI JIAN ZI HONG CHEN MOE Key Laboratory of Advanced Micro-Structured Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China State Key Laboratory of Surface Physics Key Laboratory of Micro-and Nano-Photonic Structures(Ministry of Education)and Department of PhysicsFudan UniversityShanghai 200433China School of Optoelectronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510665China

Bound states in the continuum(BICs)in artificial photonic structures have received considerable attention since they offer unique methods for the extreme field localization and enhancement of light-matter ***,the symmetry-protected BICs are located at high symmetric points,while the positions of accidental BICs achieved by tuning the parameters will appear at some points in momentum *** to now,to accurately design the position of the accidental BIC in momentum space is still a ***,we theoretically and experimentally demonstrate an accurately designed accidental BIC in a two-coupled-oscillator system consisting of bilayer gratings,where the optical response of each grating can be described by a single resonator *** changing the interlayer distance between the gratings to tune the propagation phase shift related to wave vectors,the position of the accidental BIC can be arbitrarily controlled in momentum ***,we present a general method and rigorous numerical analyses for extracting the polarization vector fields to observe the topological properties of BICs from the polarization-resolved transmission ***,an application of the highly efficient second harmonic generation assisted by quasi-BIC is *** work provides a straightforward strategy for manipulating BICs and studying their topological properties in momentum space.

关键词： polarization tuning resonator

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Observation of maximal intrinsic chirality empowered by dual quasi-bound states in the continuum in a planar metasurface

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Photonics Research 2024年第2期12卷 244-252页

作者： XIN QI jiaju wu FENG wu SONG ZHAO CHAO wu YUEYANG MIN MINA REN YUFEI WANG HAITAO JIANG YUNHUI LI ZHIWEI GUO YAPING YANG WANHUA ZHENG HONG CHEN YONG SUN MOE Key Laboratory of Advanced Micro-Structured Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China School of Optoelectronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510665China l3 Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Science and EngineeringTongji UniversityShanghai 200092China Department of Electrical Engineering Tongji UniversityShanghai 201804China State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China

Metasurfaces with spin-selective transmission play an increasingly critical role in realizing optical chiral responses,especially for strong intrinsic chirality,which is limited to complex three-dimensional *** this paper,we propose a planar metasurface capable of generating maximal intrinsic chirality and achieving dual-band spinselective transmission utilizing dual quasi-bound states in the continuum(quasi-BICs)caused by the structural symmetry ***,the value of circular dichroism(CD)and the transmittance of two kinds of circular polarization states can be arbitrarily controlled by tuning the asymmetry *** CD approaching unity with the maximum transmittance up to 0.95 is experimentally achieved in the dual ***,assisted by chiral BICs,the application in polarization multiplexed near-field image display is also *** work provides a new avenue to flexibly control intrinsic chirality in planar structure and offers an alternative strategy to develop chiral sensing,multiband spin-selective transmission,and high-performance circularly polarized wave *** basic principle and design method of our experiments in the microwave regime can be extended to other bands,such as the terahertz and infrared wavelengths.

关键词： planar intrinsic quasi

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基于1DCNN-BiLSTM的航空发动机故障分类研究

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现代电子技术 2024年第20期47卷 129-135页

作者：孔令刚康时嘉吴家菊左洪福杨永辉程铮中国工程物理研究院计算机应用研究所南京航空航天大学民航学院

随着航空发动机运行状态的变化，其故障模式也会发生变化。针对航空发动机的运行退化趋势，提出一种基于1DCNN-BiLSTM的航空发动机故障分类模型。该模型可以直接用于原始监测数据，不需要其他算法提取故障退化特征，并且能充分利用1DCN... 详细信息

随着航空发动机运行状态的变化，其故障模式也会发生变化。针对航空发动机的运行退化趋势，提出一种基于1DCNN-BiLSTM的航空发动机故障分类模型。该模型可以直接用于原始监测数据，不需要其他算法提取故障退化特征，并且能充分利用1DCNN提取时间维度局部特征的优势，以及BiLSTM处理非线性时间序列及利用双向上下文信息的特点，最后连接全连接层来学习双向时序依赖的特征信息，并使用softmax函数来诊断故障类别。在美国航空航天局公开的CMAPSS数据集上进行验证，将故障模式分为无故障、HPC故障（单一故障）、HPC&Fan故障（混合故障）三种类型。实验结果表明，与其他模型对比，所提模型具有较高的分类精度，这对提高航空发动机运行可靠性和进一步进行剩余使用寿命预测有一定的实用价值。

关键词：航空发动机发动机故障故障分类 1DCNN BiLSTM 非线性时间序列

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变化负载下全桥LLC谐振变换器参数优化设计

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广西师范大学学报(自然科学版) 2024年第05期42卷 61-71页

作者：王党树孙龙董振贾如琳杨黎康吴家驹王新霞西安科技大学理学院西安科技大学电气与控制工程学院

LLC谐振变换器在软开关特性方面有一定的局限性，针对可变负载条件下LLC谐振变换器软开关特性不稳定的问题，本文结合ZVS/ZCS边界推导了软开关约束条件，提出了一套基于全桥LLC谐振变换器变化负载下参数优化设计方法，以提高系统的稳定... 详细信息

LLC谐振变换器在软开关特性方面有一定的局限性，针对可变负载条件下LLC谐振变换器软开关特性不稳定的问题，本文结合ZVS/ZCS边界推导了软开关约束条件，提出了一套基于全桥LLC谐振变换器变化负载下参数优化设计方法，以提高系统的稳定性和效率。方案不仅考虑了谐振电感、电容和变压器的参数优化，还充分考虑了负载变化对软开关行为的影响。介绍了全桥LLC谐振变换器的工作原理，对电压增益与谐振网络阻抗特性进行了较为细致的分析。根据上述设计方案搭建了一台500W的车载充电机试验样机，在实验室条件下对样机进行测试。结果表明试验样机整机在参数优化后效率有所提升，最高效率可达96.36%。

关键词： LLC谐振变换器可变负载软开关参数优化谐振网络

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Steerable merging bound states in the continuum on a quasi-flatband of photonic crystal slabs without breaking symmetry

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光子学研究:英文版 2023年第7期11卷 1262-1274页

作者： XIN QI jiaju wu FENG wu MINA REN QIAN WEI YUFEI WANG HAITAO JIANG YUNHUI LI ZHIWEI GUO YAPING YANG WANHUA ZHENG YONG SUN HONG CHEN MOE Key Laboratory of Advanced Micro-structured Materials School of Physics Sciences and EngineeringTongji UniversityShanghai 200092China School of Optoelectronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510665China State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Department of Electrical Engineering Tongji UniversityShanghai 201804China

Optical resonators with high quality(Q)factors are paramount for the enhancement of light–matter interactions in engineered photonic structures,but their performance always suffers from the scattering loss caused by fabrication *** bound states in the continuum(BICs)provide us with a nontrivial physical mechanism to overcome this challenge,as they can significantly improve the Q factors of ***,most of the reported merging BICs are found atΓpoint(the center of the Brillouin zone),which intensively limits many potential applications based on angular *** date,studies on manipulating merging BICs at off-Γpoint are always accompanied by the breaking of structural symmetry that inevitably increases process difficulty and structural defects to a certain ***,we propose a scheme to construct merging BICs at almost an arbitrary point in momentum space without breaking *** by the topological features of BICs,we merge four accidental BICs with one symmetry-protected BIC at theΓpoint and merge two accidental BICs with opposite topological charges at the off-Γpoint only by changing the periodic constant of a photonic crystal ***,the position of off-Γmerging BICs can be flexibly tuned by the periodic constant and height of the structure ***,it is observed that the movement of BICs occurs in a quasi-flatband with ultra-narrow ***,merging BICs in a tiny band provide a mechanism to realize more robust ultrahigh-Q resonances that further improve the optical performance,which is limited by wide-angle ***,as an example of application,effective angle-insensitive second-harmonic generation assisted by different quasi-BICs is numerically *** findings demonstrate momentum-steerable merging BICs in a quasi-flatband,which may expand the application of BICs to the enhancement of frequency-sensitive light–matter interaction with angular selectivit

关键词： quasi symmetry breaking

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磁阻式旋转变压器解码系统设计

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传感器与微系统 2024年第1期43卷 111-114,119页

作者：钟旺陈亮亮祝长生伍家驹危水根南昌航空大学信息工程学院江西南昌330063 浙江大学电气工程学院浙江杭州310027

在高性能电机的闭环控制系统中,旋转变压器(简称旋变)常用于测量电机转子的位置与速度信息,设计了一种以专用旋变数字转换芯片为核心的磁阻式旋变解码系统,用于将旋变输出的正余弦信号解码为转子的位置信息。解码系统包括主芯片模块、... 详细信息

在高性能电机的闭环控制系统中,旋转变压器(简称旋变)常用于测量电机转子的位置与速度信息,设计了一种以专用旋变数字转换芯片为核心的磁阻式旋变解码系统,用于将旋变输出的正余弦信号解码为转子的位置信息。解码系统包括主芯片模块、旋变输入信号调理模块、励磁缓冲电路模块和电源模块等,将各功能模块集成在一块印刷电路板(PCB)上,并通过实验验证了设计方案的有效性。实验结果表明:设计的磁阻式旋变解码系统运行稳定,能实时准确地输出电机转子的位置与速度信息。

关键词：磁阻式旋转变压器旋变数字转换芯片电路设计解码器

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电子变压器参数的一种间接测算方法(英文)

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电工技术学报 2006年第12期21卷 26-34页

作者：伍家驹杉本英彦南昌航空工业学院无损检测技术教育部重点实验室南昌330034 福井大学

电子变压器的精确参数值对电力电子电路来说是非常重要的,研究时常将分布参数等效成集中参数。在开关状态下变压器的多值非线性、分布效应和趋肤接近效应都更加凸显,测量方法直接关系到参数值的测算结果。本文提出了通过额定电压满负载... 详细信息

电子变压器的精确参数值对电力电子电路来说是非常重要的,研究时常将分布参数等效成集中参数。在开关状态下变压器的多值非线性、分布效应和趋肤接近效应都更加凸显,测量方法直接关系到参数值的测算结果。本文提出了通过额定电压满负载条件下阶跃响应来间接地测算常规模型中的集中参数的方法,仿真结果较好地吻合了实验波形,明显优于常规的测算方法。文中还从仿真元素度量的准确度评判、阶跃激励下的物理过程和变压器实验时的电磁环境等角度对测算方法作了较详细的分析比较。

关键词：电子变压器仿真参数测算试验

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Differencial-Clustering:Mining Bicluster Based on Weighted Graph in Microarray Dataset

Differencial-Clustering:Mining Bicluster Based on Weighted G...

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2013年中国智能自动化学术会议

作者： Jingni Diao Cuifang Zheng Jilan Zhang jiaju wu Institution of Computer Application China Academy of Engineering Physics

In this study,we discuss methods of mining differential biclusters on gene expression data.A differential bicluster is a set of genes corresponding to samples which have substantially different expression values in two sample *** differential clusters may have meaningful biology significance that some specified experimental conditions are key factor to gene expression values and certain genes are sensitive to these *** general,most of bicluster algorithms follow a respective clustering framework that they mine clusters in two ***,this strategy leads to low efficiency in term of *** proposed a novel algorithm:Differencial-Clustering with the strategy which mine differential biclusters directly on weighted graph corresponding to two sample *** main contribution of our algorithm is that we avoid the respective cluster generation in two classes and comparison *** compare our algorithm with standard subspace clustering method,the experimental result analysis demonstrate our main contribution.

关键词： Differential bicluster Subspace clustering Differential graphs

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Ruxolitinib improves the inflammatory microenvironment,restores glutamate homeostasis,and promotes functional recovery after spinal cord injury

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Neural Regeneration Research 2024年第11期19卷 2499-2512页

作者： Jiang Cao Xiao Yu Jingcheng Liu jiaju Fu Binyu Wang Chaoqin wu Sheng Zhang Hongtao Chen Zi Wang Yinyang Xu Tao Sui Jie Chang Xiaojian Cao Department of Orthopedics The First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu ProvinceChina Department of Trauma Surgery Subei People’s Hospital of JiangsuClinical Medical College of Yangzhou UniversityYangzhouJiangsu ProvinceChina Department of Orthopedics Zhongda HospitalSoutheast UniversityNanjingJiangsu ProvinceChina Department of Orthopedic Surgery Nanjing Drum Tower HospitalThe Affiliated Hospital of Medical School of Nanjing UniversityNanjingJiangsu ProvinceChina

The inflammatory microenvironment and neurotoxicity can hinder neuronal regeneration and functional recovery after spinal cord ***,a JAK-STAT inhibitor,exhibits effectiveness in autoimmune diseases,arthritis,and managing inflammatory cytokine *** studies have shown the neuroprotective potential of ruxolitinib in neurological trauma,the exact mechanism by which it enhances functional recovery after spinal cord injury,particularly its effect on astrocytes,remains *** address this gap,we established a mouse model of T10 spinal cord contusion and found that ruxolitinib effectively improved hindlimb motor function and reduced the area of spinal cord *** sequencing analysis showed that ruxolitinib alleviated inflammation and immune response after spinal cord injury,restored EAAT2 expression,reduced glutamate levels,and alleviated excitatory ***,ruxolitinib inhibited the phosphorylation of JAK2 and STAT3 in the injured spinal cord and decreased the phosphorylation level of nuclear factor kappa-B and the expression of inflammatory factors interleukin-1β,interleukin-6,and tumor necrosis factor-α.Additionally,in glutamate-induced excitotoxicity astrocytes,ruxolitinib restored EAAT2 expression and increased glutamate uptake by inhibiting the activation of STAT3,thereby reducing glutamate-induced neurotoxicity,calcium influx,oxidative stress,and cell apoptosis,and increasing the complexity of dendritic ***,these results indicate that ruxolitinib restores glutamate homeostasis by rescuing the expression of EAAT2 in astrocytes,reduces neurotoxicity,and effectively alleviates inflammatory and immune responses after spinal cord injury,thereby promoting functional recovery after spinal cord injury.

关键词： astrocytes EAAT2 excitotoxicity glutamate homeostasis JAK-STAT pathway locomotor function neurotoxicity ruxolitinib spinal cord injury transcriptome analysis

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