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Nonreciprocal microwave transmission under the joint mechanism of phase modulation and magnon Kerr nonlinearity effect

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Frontiers of physics 2023年第1期18卷 165-174页

作者： Cui Kong Jibing liu Hao xiong College of Physics and Electronic Science Hubei Normal UniversityHuangshi 435002China School of Physics Huazhong University of Science and TechnologyWuhan 430074China

Nonreciprocal microwave devices,in which the transmission of waves is non-symmetric between two ports,are indispensable for the manipulation of information processing and *** this work,we show the nonreciprocal microwave transmission in a cavity magnonic system under the joint mechanism of phase modulation and magnon Kerr nonlinearity *** contrast to the schemes based on the standard phase modulation or magnon Kerr nonlinearity,we find that the joint mechanism enables the nonreciprocal transmission even at low power and makes us obtain a high nonreciprocal isolation ***,when two microwave modes are coupled to the magnon mode via a different coupling strength,the presented strong nonreciprocal response occurs,and it makes the nonreciprocal transmission manipulating by the magnetic field within a large adjustable range possible,which overcomes narrow operating *** study may provide promising opportunities to realize nonreciprocal structures for wave transmission.

关键词： nonreciprocal microwave transmission phase modulation magnon Kerr nonlinearity effect

YOLO-CORE: Contour Regression for Efficient Instance Segmentation

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Machine Intelligence Research 2023年第5期20卷 716-728页

作者： Haoliang liu Wei xiong Yu Zhang School of Computer Science and Engineering and the Key Laboratory of Computer Network and Information Integration(Ministry of Education) Southeast UniversityNanjing 211189China

Instance segmentation has drawn mounting attention due to its significant ***,high computational costs have been widely acknowledged in this domain,as the instance mask is generally achieved by pixel-level *** this paper,we present a conceptually efficient contour regression network based on the you only look once(YOLO)architecture named YOLO-CORE for instance *** mask of the instance is efficiently acquired by explicit and direct contour regression using our designed multiorder constraint consisting of a polar distance loss and a sector *** proposed YOLO-CORE yields impressive segmentation performance in terms of both accuracy and *** achieves 57.9%AP@0.5 with 47 FPS(frames per second)on the semantic boundaries dataset(SBD)and 51.1%AP@0.5 with 46 FPS on the COCO *** superior performance achieved by our method with explicit contour regression suggests a new technique line in the YOLO-based image understanding ***,our instance segmentation design can be flexibly integrated into existing deep detectors with negligible computation cost(65.86 BFLOPs(billion float operations per second)to 66.15 BFLOPs with the YOLOv3 detector).

关键词： Computer vision instance segmentation object shape prediction contour regression polar distance.

不同宿主来源产气荚膜梭菌生物被膜形成前后药物敏感性分析

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动物医学进展 2025年第1期46卷 38-42页

作者：吴莹邵长军刘文华青岛农业大学动物医学院山东青岛266109 烟台市农科院山东烟台264200

为了检测5株不同宿主来源产气荚膜梭菌形成生物被膜能力及其对抗菌药物的敏感性差异,首先用纸片扩散法药敏试验测定5株不同来源的产气荚膜梭菌对7种抗菌药物的敏感性;筛选高敏药物测定各菌株的最小抑菌浓度(MIC);利用结晶紫染色法检测... 详细信息

为了检测5株不同宿主来源产气荚膜梭菌形成生物被膜能力及其对抗菌药物的敏感性差异,首先用纸片扩散法药敏试验测定5株不同来源的产气荚膜梭菌对7种抗菌药物的敏感性;筛选高敏药物测定各菌株的最小抑菌浓度(MIC);利用结晶紫染色法检测不同来源产气荚膜梭菌生物被膜形成能力和高敏药物对生物被膜的抑制和清除能力。药敏结果显示,5株不同宿主来源产气荚膜梭菌均对氨苄西林高度敏感,对其余6种抗菌药物有不同程度耐药;氨苄西林对不同菌株的MIC值在0.031~2.000μg/mL之间;所有菌株均能生成生物被膜,但生物被膜生成能力有差异;不同菌株在各自4、2、1 MIC下生物被膜的生成受到不同程度抑制,而亚抑菌浓度的氨苄西林能刺激生物被膜的生成,氨苄西林对已经生成的生物被膜不能完全清除。结果表明,不同来源产气荚膜梭菌形成生物被膜前后对药物敏感性不同,可为产气荚膜梭菌的临床用药选择及使用剂量提供一定的参考依据。

关键词：产气荚膜梭菌生物被膜最小抑菌浓度耐药性

聚焦解决护理模式对癫痫患者防护能力及心理状况的影响

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临床研究 2025年第1期33卷 161-163页

作者：刘欣许珺河南省人民医院河南省护理医学重点实验室郑州大学人民医院神经内科八病区河南郑州450000

目的对癫痫患者实施聚焦解决护理模式(FOS)的应用效果展开分析。方法选取2022年11月至2023年11月河南省人民医院收治的98例癫痫患者作为研究对象,使用随机数表法将患者分为对照组(n=49)、研究组(n=49),对照组实施常规护理,研究组在对照... 详细信息

目的对癫痫患者实施聚焦解决护理模式(FOS)的应用效果展开分析。方法选取2022年11月至2023年11月河南省人民医院收治的98例癫痫患者作为研究对象,使用随机数表法将患者分为对照组(n=49)、研究组(n=49),对照组实施常规护理,研究组在对照组的基础上实施FOS护理。比较两组癫痫发作频率及持续时间、心理状态评分、自护能力评分、生活质量评分、护理满意度。结果护理后,研究组癫痫发作频率低于对照组,持续时间短于对照组,差异有统计学意义(P<0.05)。护理后,研究组焦虑自评量表(SAS)、抑郁自评量表(SDS)均低于对照组,差异有统计学意义(P<0.05)。护理后,研究组自我护理能力测定量表(ESCA)、健康调查简表(SF-36)评分均高于对照组,差异有统计学意义(P<0.05)。研究组护理满意度高于对照组,差异有统计学意义(P<0.05)。结论对癫痫患者实施FOS护理措施,可以缓解其癫痫症状及负面情绪,提升其自护能力及生活质量,进而提升患者对护理的满意度。

关键词：聚焦解决护理癫痫心理状况自护能力

PCT:Point cloud transformer

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Computational Visual Media 2021年第2期7卷 187-199页

作者： Meng-Hao Guo jun-xiong Cai Zheng-Ning liu Tai-Jiang Mu Ralph R.Martin Shi-Min Hu BNRist Department of Computer Science and TechnologyTsinghua UniversityBeiing 100084China Cardiff University Cardiff CF243

The irregular domain and lack of ordering make it challenging to design deep neural networks for point cloud *** paper presents a novel framework named Point Cloud Transformer(PCT)for point cloud *** is based on Transformer,which achieves huge success in natural language processing and displays great potential in image *** is inherently permutation invariant for processing a sequence of points,making it well-suited for point cloud *** better capture local context within the point cloud,we enhance input embedding with the support of farthest point sampling and nearest neighbor *** experiments demonstrate that the PCT achieves the state-of-the-art performance on shape classification,part segmentation,semantic segmentation,and normal estimation tasks.

关键词： 3D computer vision deep learning point cloud processing Transformer

A Novel Three-dimensional Inorganic Open-framework Constructed from [Mo_4O_(16)]_n ^(8n-) Chains Linked through Ag^+

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Chinese Journal of Structural Chemistry 2005年第12期24卷 1452-1456页

作者： GUO Hong-Xu liu Shi-xiong Department of Chemistry Fuzhou University Fuzhou 350002 China Department of Chemtstry Zhangzhou Teacher＇s College Zhangzhou 363000 China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter The Chinese Academy of Sciences Fuzhou 350002 China

A novel 3-D inorganic bimetallic compound Ag2Mo2O7 has been hydrothermally synthesized and structurally characterized by X-ray diffraction. The compound crystallizes in monoclinic, space group P21/c with a = 6.1274（3）, b = 13.1836（6）, c = 7.8780（3）A, β= 110.673（3）°, V = 595.42（5）A3, Z= 4, Mr= 519.62, Dc = 5.797g/cm^3, F（000） = 936,μ（MoKα） = 10.579 mm^-1, F（000） = 936, the final R = 0.0204 and wR = 0.0477 for 1268 observed reflections with I〉 2σ（I）. In the title compound, the [Mo4O16]n^8n-chains are linked through O-Ag-O bridging bonds to form a 3D network. It represents an unprecedented linking mode between the isopolyoxomolybdate chain and the transition metal oxide cluster. IR, TGA and fluorescence properties of the title compound are also studied.

关键词： polyoxomolybdate molybdenum(Ⅵ) open-framework hydrothermal synthesis crystal structure

Synthesis and Extended 3D Hydrogen-bonded Structure of Complex Tris(violurato-N,O) Cobalt(III) Hexahydrate

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Chinese Journal of Structural Chemistry 2006年第2期25卷 163-167页

作者： XIAO Zi-Jing liu Shi-xiong Central Laboratory Fuzhou University Fuzhou 350002 China College of Materials Science and Engineering Huaqiao University Quanzhou 362011 China State Key Laboratory of Structural Chemistry Fuzhou 350002 China

The cobalt（Ⅲ） violurato complex （[Co（C4H2N3O4）3]·6H2O, Mr = 635.28） has been prepared and structurally characterized. The crystal is of monoclinic, space group P2 1/n with a = 10.176（1）, b = 11.8010（9）, c = 19.706（2） A°, β= 97.382（3）°, V= 2346.9（4）A°^3, Z = 4, Dc= 1.798 g/cm^3, F（000） = 1296, μ = 0.839 mm^-1, R = 0.0482 and wR = 0.1357. The Co atom in the title compound is six- coordinated by three carbonyl O atoms and three oximido N atoms of three violurato ligands, forming an octahedral coordination geometry. The neighboring molecules are connected together by hydrogen bonds of N-H…O, O-H…O and O-H…N, forming an extended three-dimensional supra- molecular architecture.

关键词： Co(Ⅲ) complex violuric acid crystal structure hydrogen bond

Recent Advances in Self-assembled Nano-therapeutics

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Chinese Journal of Polymer Science 2018年第3期36卷 322-346页

作者： Chun-xiong Zheng Yu Zhao Yang liu Key Laboratory of Functional Polymer Materials of Ministry of Education Institute of Polymer ChemistryCollege of Chemistryand State Key Laboratory of Medicinal Chemical BiologyNankai UniversityTianjin 300071China

The applications of nanotechnology in biomedicine have gained considerable attentions in recent years owing to the great enhancement of therapeutic *** of self-assembly into nanotechnology has brought tremendous convenience during the formation of *** on distinctive methods of self-assembly,nano-therapeutics have beer~developed to ar~impressive stage with the ability to perform site-specific delivery with temporal and spatial *** review focuses on the recent advances in the preparing methods for nano-therapeutics,and their applications in the treatments of diseases.

关键词： Self-assembly Nano-therapeutics Hydrophobic effect Electrostatic interaction Supramolecular host-guest interaction

Theoretical analysis of the coupling between Feshbach states and hyperfine excited states in the creation of 23Na40K molecule

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Chinese Physics B 2020年第2期29卷 218-223页

作者： Ya-xiong liu Bo Zhao Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Shanghai Branch CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum PhysicsUniversity of Science and Technology of ChinaShanghai 201315China

We present an intensive study of the coupling between different Feshbach states and the hyperfine levels of the excited states in the adiabatic creation of 23Na40K ground-state *** use coupled-channel method to calculate the wave function of the Feshbach molecules,and give the short-range wave function of triplet *** energies of the hyperfine excited states and the coupling strength between the Feshbach states and the hyperfine excited states are *** results can be used to prepare a specific hyperfine level of the rovibrational ground state to study the ultracold collisions involving molecules.

关键词： Feshbach resonance stimulated Raman adiabatic passage ultracold molecule