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High-confinement ultra-wideband bandpass filter using compact folded slotline spoof surface plasmon polaritons

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Chinese Physics B 2022年第1期31卷 255-262页

作者： Xue-Wei Zhang Shao-Bin Liu Ling-Ling Wang qi-ming yu Jian-Lou Shi-Ning Sun College of Electronic and Information Engineering Key Laboratory of Radar Imaging and Microwave PhotonicsMinistry of EducationNanjing University of Aeronautics and AstronauticsNanjing 211106China AVIC Research Institute for Special Structures of Aeronautical Composite Aviation Key Laboratory of Science and Technology on High Performance Electromagnetic WindowsJinan 250023China

A novel bandpass filter(BPF)based on spoof surface plasmon polaritons(SSPPs)using a compact folded slotline structure is proposed and experimentally *** proposed novel SSPPs structure compared with a conventional plasmonic waveguide with slot line SSPPs unit structure at the same size,the considerable advantages in much lower asymptotic frequency with tight field confinement,which enable the proposed filter to be more miniaturization.A high-efficient mode conversion structure is designed to transition from TE-mode to SSPPs-mode by gradient slotline *** low-frequency stop-band can be committed with microstrip to slotline evolution on both sides of the dielectric,while the high-frequency cutoff band is realized by the proposed SSPPs *** influence of dispersion relation,electric field distribution,surface current,and structural parameters on the transmission characteristics of the proposed BPF are analyzed by finite difference time domain(FDTD).To validate the design concept,the prototype of the miniaturized SSPPs BPF has been manufactured and *** experimental results show high performance of the fabricated sample,in which the working in a range of 0.9 GHz-5.2 GHz with the relative bandwidth is 142%,the insertion loss less than 0.5 dB,the reflection coefficient less than-10 dB,and the group delay is less than one *** works provides a mirror for realizing the miniaturization of waveguides,and the application and development of high-confinement SSPPs functional devices in the microwave and THz regimes.

关键词： spoof surface plasmon polaritons(SSPPs) bandpass filter ultra-wideband high-confinement

Design of Intelligent Aquarium System based on Embedded System

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International Journal of Plant Engineering and Management 2017年第4期22卷 233-237页

作者： WANG yun-lei qi yu-ming Institute of Robotics and Intelligent Equipment Tianjin University of Technology and Education

In allusion to the simplification phenomenon of the aquarium equipment on the market,aimed at reducing the labor intensity of the breeder,the intelligent aquatic animal box is designed based on embedded system,its core processor uses STM32F4 and combined with the wireless communication,data processing technology,implement multiple DC motor control. The system uses C language as a design language. and the keil is used as the development environment,and the STM32 library function version of the embedded application development and the STAG emulator are used to the core chip and then debug. The results show that the design can fully realize the function of highly intelligent animals aquarium.

关键词： intelligent aquarium ARM STM32 keil

Optimization of Serial Port of General Flex Pendant for Industrial Robot

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International Journal of Plant Engineering and Management 2017年第4期22卷 238-242页

作者： LI Ke qi yu-ming HUANG Guang-zhou Institute of Robotics and Intelligent Equipment Tianjin University of Technology and Education

In order to further improve the serial ports communication mode of the general Flex Pendant for industrial robot,a multiple serial communication mode is put forward. It is used to meet the stability of data transmission,transmission distance,transmission speed,anti-interference and cost-effective. Using ADUM1201 single direction dual channel digital isolator,two pieces of MAX13487 E and a piece of MAX3232 chip to transmit data and files, and to control chip’ s electrical level. Selecting the RS232, RS422 and RS485 communication mode,the serial ports of the general Flex Pendant of industrial robot is optimized.

关键词： general Flex Pendant industrial robot multiple serial ports communication mode

Effect of L-theanine combined with geniposide on depression-like behavior induced by the chronic unpredictable mild stress(CUMS) in mice

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Food Science and Human Wellness 2024年

作者： qi-ming yu Yan Zhu Tao Jiang Ying Gao Nan Ling Na Wang John Shi Wei-Chun Pan qi-Zhen Du Jun-Feng Yin Tea Research Institute Chinese Academy of Agricultural Sciences， Key Laboratory of Tea Biology and Resources Utilization， Ministry of Agriculture College of Public Health， Guilin Medical University College of Food and Health Sciences， Zhejiang A & F University Guelph Food Research Center， Agriculture and Agri-Food Canada Zhejiang Gongshang University

Depression is a prevalent mental disorder with limited effective treatments， posing a significant global issue. This study explored L-theanine and geniposide， key components in "food-medicine homology" materials， to determine if their combination (TG) could alleviate depression-like behaviors and hippocampal neuronal damage in a chronic unpredictable mild stress (CUMS) mouse model. Male C57BL/6J mice were divided into control， CUMS model， and CUMS+TG groups with varying doses. The CUMS group displayed depression-like behaviors， including reduced activity and sucrose preference. TG treatment partially reversed these changes， significantly increasing antioxidant enzyme activities， decreasing pro-inflammatory cytokine levels， and improving neuromodulator levels. RNA-seq analysis identified the transthyretin (TTR) gene， upregulated in the model group but downregulated after TG treatment. TG treatment modulated intestinal microbiota composition compared to the CUMS group， including increased Firmicutes， reduced Bacteroidetes and Prevotella， and variable changes in Bifidobacterium abundance. In conclusion， our study indicates that CUMS exposure upregulates stress hormones and TTR expression， associated with neuroinflammation， oxidative stress， monoamine depletion， depression-like behaviors， and intestinal microbiota dysbiosis. TG treatment alleviates these effects and modulates intestinal microbiota， suggesting L-theanine and geniposide’s potential as a novel depression therapy.

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Study of Visual Information Acquisition Technology based on AGV Robot

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International Journal of Plant Engineering and Management 2017年第4期22卷 250-254页

作者： SONG qing-shan qi yu-ming DENG San-peng Institute of Robotics and Intelligent Equipment Tianjin University of Technology and Education

Visual information acquisition is an important component of the AGV robot. The system adopts STM32F4 embedded application of the ARM Cortex-M4 kernel as the main control module,using shift algorithm to finish on a specific color piece of target tracking. For multi-sensor fusion of three methods,quaternion method is used to correct the attitude,the stability of AGV robot visual information acquisition and image clarity are improved.

关键词： AGV robot STM32F4 visual information acquisition four element algorithm

Multilevel analysis of the central-peripheral-target organ pathway:contributing to recovery after peripheral nerve injury

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Neural Regeneration Research 2025年第10期20卷 2807-2822页

作者： Xizi Song Ruixin Li Xiaolei Chu qi Li Ruihua Li qingwen Li Kai-yu Tong Xiaosong Gu Dong ming Academy of Medical Engineering and Translational Medicine Tianjin UniversityTianjinChina Haihe Laboratory of Brain-Machine Interface and Human-Machine Fusion TianjinChina Department of Rehabilitation Tianjin University Tianjin HospitalTianjinChina Department of Hand Microsurgery Tianjin University Tianjin HospitalTianjinChina School of Exercise and Health Tianjin University of SportTianjinChina Department of Biomedical Engineering the Chinese University of Hong KongHong Kong Special Administrative RegionChina

Peripheral nerve injury is a common neurological condition that often leads to severe functional limitations and *** on the pathogenesis of peripheral nerve injury has focused on pathological changes at individual injury sites,neglecting multilevel pathological analysis of the overall nervous system and target *** has led to restrictions on current therapeutic *** this paper,we first summarize the potential mechanisms of peripheral nerve injury from a holistic perspective,covering the central nervous system,peripheral nervous system,and target *** peripheral nerve injury,the cortical plasticity of the brain is altered due to damage to and regeneration of peripheral nerves;changes such as neuronal apoptosis and axonal demyelination occur in the spinal *** nerve will undergo axonal regeneration,activation of Schwann cells,inflammatory response,and vascular system regeneration at the injury *** damage to target organs can occur,including skeletal muscle atrophy and sensory receptor *** then provide a brief review of the research advances in therapeutic approaches to peripheral nerve *** main current treatments are conducted passively and include physical factor rehabilitation,pharmacological treatments,cell-based therapies,and physical ***,most treatments only partially address the problem and cannot complete the systematic recovery of the entire central nervous system-peripheral nervous system-target organ ***,we should further explore multilevel treatment options that produce effective,long-lasting results,perhaps requiring a combination of passive(traditional)and active(novel)treatment methods to stimulate rehabilitation at the central-peripheral-target organ levels to achieve better functional recovery.

关键词： central nervous system central peripheral target organ multilevel pathological analysis nerve regeneration peripheral nerve injury peripheral nervous system target organs therapeutic approach

基于MDU元建模方法的弧面分度凸轮虚拟设计研究

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机械设计与制造 2006年第1期 11-13页

作者：曹巨江祁宇明陕西科技大学机电工程学院咸阳712081

对弧面分度凸轮的虚拟设计模型的建立需要考虑模型数据的可重用性,模型间数据的一致性与互操作性。基于MDU的元建模方法建立的弧面分度凸轮模型可以实现模型间的信息交互与无缝集成,这里初步建立了弧面分度凸轮机构的元模型,对进一步的... 详细信息

对弧面分度凸轮的虚拟设计模型的建立需要考虑模型数据的可重用性,模型间数据的一致性与互操作性。基于MDU的元建模方法建立的弧面分度凸轮模型可以实现模型间的信息交互与无缝集成,这里初步建立了弧面分度凸轮机构的元模型,对进一步的弧面分度凸轮的参数约束与拓扑约束的参数化设计有着积极的作用。

关键词： MDU 元建模弧面分度凸轮虚拟设计

Microinjection of hydrogen sulfide into rostral ventrolateral medulla decreases sympathetic vasomotor tone through ATP-sensitive K+ channels in anesthetized male rats

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Microinjection of hydrogen sulfide into rostral ventrolatera...

中国生理学会第23届全国会员代表大会暨生理学学术大会

作者： qi GUO,yu-ming WU~* Department of Physiology,Institute of Basic Medicine,Hebei Medical University,Shijiazhuang 050017,China

Aim:The present study was to define the effects of hydrogen sulfide(HS) on the central regulation of blood pressure(BP),heart rate(HR),and renal sympathetic nerve activity(RSNA).Methods:Sodium hydrogen sulfide(NaHS),a HS donor,was microinjected into rostral ventrolateral medulla(RVLM),and BP,HR and RSNA were recorded simultaneously in anesthetized ***:Microinjection of NaHS(4,8,and 16 mmol/L,0.05μL) into RVLM dose-dependently decreased BP,HR and *** with NG-nitro-L-arginine methyl ester(L-NAME,200μmol/L,0.05μL),an inhibitor of nitric oxide synthase(NOS),could partly abolish the effects of *** with glibenclamide(40μmol/L,0.05μL),a K channels blocker,the above effects of NaHS were *** microinjection of Bay K8644(1μmol/L,0.05μL),an agonist of calcium channels,did not affect the effects of *** of the cystathionineβ-synthase(CBS) inhibitor,hydroxylamine(HA,60 mmol/L,0.05μL) increased BP,HR and ***:The results suggest that microinjection of NaHS into RVLM inhibits BP,HR,and *** effects may be mediated by opening a K channels and NO synthesis is involved *** HS may suppress the sympathetic vasomotor tone in vivo.

关键词： hydrogen sulfide nitric oxide RVLM Bay K8644

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金属表面自纳米化及其复合改性技术研究进展

表面技术 2019年第8期48卷 122-128页

作者：彭振军徐惠齐玉明梁军兰州理工大学石油化工学院兰州730050 中国科学院兰州化学物理研究所固体润滑国家重点实验室兰州730000

结合国内外表面自纳米化的研究成果,综述了表面纳米晶层产生的机理及表面自纳米化对材料表面硬度、摩擦磨损性能、抗疲劳性能以及耐腐蚀性能等的影响,总结了表面纳米晶层的优势,并针对表面纳米晶层性能及单一表面处理技术的不足,详细介... 详细信息

结合国内外表面自纳米化的研究成果,综述了表面纳米晶层产生的机理及表面自纳米化对材料表面硬度、摩擦磨损性能、抗疲劳性能以及耐腐蚀性能等的影响,总结了表面纳米晶层的优势,并针对表面纳米晶层性能及单一表面处理技术的不足,详细介绍了金属表面自纳米化与等离子体扩渗、微弧氧化及化学镀等常规表面处理相结合的复合改性技术研究进展,阐明了复合处理技术在材料性能提升上的巨大优势。最后,指出了复合处理技术面临的挑战,并从加强作用机理的研究、复合处理工艺系统性研究以及推进工业化应用等方向着手,提出应充分发挥金属材料表面自纳米化这一普适性的表面处理手段与其他表面改性技术复合的优势。希望为实现金属材料结构功能一体化,促进高性能新型材料和高性能复相表层的研究开发,加快复合改性技术工业化应用的进程提供借鉴与支撑。

关键词：表面自纳米化等离子体扩渗微弧氧化化学镀复合改性技术