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Out-of-plane weak ferromagnetism at room temperature in lattice-distortion non-collinear antiferromagnet of single-crystal Mn_(3)Sn

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Chinese Physics B 2023年第8期32卷 428-432页

作者：张博熙宋平邓珊珊娄理姚森 State Key Laboratory of Metastable Materials Science and Technology and Key Laboratory for Microstructural Material Physics of Hebei Province School of ScienceYanshan UniversityQinhuangdao 066004China

Out-of-plane weak ferromagnetic(OWFM)spin arrangements with topological properties can realize a series of interesting physical ***,this spin structure tends to exist at low *** OWFM structure can also be induced at room temperature by hydrostatic pressure,whereas this isotropic approach tends to form helical AFM *** report the OWFM spin arrangement in single crystal Mn_(3)Sn by an anisotropic strategy of high-stressconstrained compression deformation at room *** experimental and theoretical simulation results show that the alignment of the OWFM spin structure is due to the distortion of the atomic scale caused by the strain energy during *** OWFM spin arrangement can significantly change the magnetic property of Mn_(3)*** a result,the remanent magnetization M_(r)for the deformed sample(0.056μ_(B)/f.u.)is about eleven times that for the pre-deformed sample(0.005μ_(B)/f.u.),and the coercivity(H_(c))increases from 0 k Oe(pre-deformed sample)to 6.02 k Oe(deformed sample).Our findings provide a way to generate the OWFM spin structure at room temperature and may give fresh ideas for creating antiferromagnetic materials with excellent physical properties.

关键词： non-collinear antiferromagnet high-stress-constrained compression deformation lattice distortion

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双波长照明下的非干涉相位恢复算法

光子学报 2018年第4期47卷 126-134页

作者：程鸿高要利徐姗姗邓会龙韦穗安徽大学电子信息工程学院计算智能与信号处理教育部重点实验室合肥230601 陆军炮兵防空兵学院十一系合肥230031

针对原有基于强度传输方程(TIE)的非干涉相位恢复技术只适用于单波长条件下近距离传播时相位求解的局限,提出了一种双波长照明条件下的TIE算法.该算法在求解过程中考虑两个波长下相位间的相关约束,并引入了合成波长的概念.同时,考虑到TI... 详细信息

针对原有基于强度传输方程(TIE)的非干涉相位恢复技术只适用于单波长条件下近距离传播时相位求解的局限,提出了一种双波长照明条件下的TIE算法.该算法在求解过程中考虑两个波长下相位间的相关约束,并引入了合成波长的概念.同时,考虑到TIE法在远距离传播时相位恢复精度较低的问题,将其与角谱迭代算法结合,提出了一种双波长混合迭代算法.实验结果表明,双波长TIE算法相位恢复图的误差平均值降低到0.191 2;在远距离传播时,双波长混合迭代算法相位恢复图的误差平均值降低到0.220 2.表明所提算法可以在双波长照明下有效地恢复相位信息,并且不受距离的限制.

关键词：相位恢复强度传输方程双波长角谱迭代合成波长

Graphene Aerogel Composites with Self‑Organized Nanowires‑Packed Honeycomb Structure for Highly Efficient Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第2期17卷 533-547页

作者： Xiao You Huiying Ouyang Ruixiang deng Qiuqi Zhang Zhenzhong Xing Xiaowu Chen Qingliang shan Jinshan Yang Shaoming Dong State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Key Laboratory of Inorganic Coating Materials CAS Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Structural Ceramics and Composites Engineering Research Center Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210People’s Republic of China School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China University of Chinese Academy of Sciences Beijing 100039People’s Republic of China

With vigorous developments in nanotechnology,the elaborate regulation of microstructure shows attractive potential in the design of electromagnetic wave ***,a hierarchical porous structure and composite heterogeneous interface are constructed successfully to optimize the electromagnetic loss *** macro–micro-synergistic graphene aerogel formed by the ice template‑assisted 3D printing strategy is cut by silicon carbide nanowires(SiC_(nws))grown in situ,while boron nitride(BN)interfacial structure is introduced on graphene *** unique composite structure forces multiple scattering of incident EMWs,ensuring the combined effects of interfacial polarization,conduction networks,and magnetic-dielectric ***,the as-prepared composites present a minimum reflection loss value of−37.8 dB and a wide effective absorption bandwidth(EAB)of 9.2 GHz(from 8.8 to 18.0 GHz)at 2.5 ***,relying on the intrinsic high-temperature resistance of SiC_(nws) and BN,the EAB also remains above 5.0 GHz after annealing in air environment at 600℃ for 10 h.

关键词： Hierarchical porous structure Interface High-temperature resistance Graphene aerogel composites Electromagnetic wave absorption

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火针治疗湿疹的Meta分析

针灸临床杂志 2017年第5期33卷 55-60页

作者：许珊珊陈劼邓玮司坤鹏广州中医药大学广东广州510400

目的:评价火针疗法治疗湿疹的疗效和安全性。方法:计算机检索Pub Med、Medline、中国期刊全文数据库(CNKI)、中国生物医学文献数据库(CBM)、万方数据库、维普期刊数据库(VIP),并辅以手工检索,根据Cochrane handbook 5.1.0评价研究质量,... 详细信息

目的:评价火针疗法治疗湿疹的疗效和安全性。方法:计算机检索Pub Med、Medline、中国期刊全文数据库(CNKI)、中国生物医学文献数据库(CBM)、万方数据库、维普期刊数据库(VIP),并辅以手工检索,根据Cochrane handbook 5.1.0评价研究质量,应用Rev Man 5.3进行Meta分析。结果:共纳入12篇文献,计785例患者。Meta分析显示:(1)总有效率:火针VS西药差异有统计学意义(RR=1.23,95%CI[1.12,1.36]);火针+灸法VS西药差异有统计学意义(RR=1.17,95%CI[1.03,1.33]);火针+西药VS西药、火针+针刺VS针刺差异均有统计学意义。(2)EASI评分:火针VS西药差异有统计学意义(MD=-2.06,95%CI[-2.91,-1.21]);火针+刺络VS西药差异有统计学意义(MD=-1.89,95%CI[-3.17,-0.61]);火针+灸法VS西药差异有统计学意义(MD=-1.16,95%CI[-2.09,-0.22])。(3)VAS评分:火针VS西药、火针+刺络VS西药差异均有统计学意义。结论:火针治疗湿疹有一定的疗效且应用安全,但因纳入文献研究质量不足,目前不能对其疗效得出肯定性结论,需要更多大样本、高质量、多中心的随机对照试验进一步验证。

关键词：湿疹火针疗法 Meta分析

Dynamic Recrystallization Behavior of Bimodal Size SiCpReinforced Mg Matrix Composite during Hot Deformation

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Acta Metallurgica Sinica(English Letters) 2016年第6期29卷 527-537页

作者： Cui-Ju Wang Kun-Kun deng shan-shan Zhou Wei Liang shanxi Key Laboratory of Advanced Magnesium-based Materials College of Materials Science and EngineeringTaiyuan University of Technology

The（submicron＋micron） bimodal size Si Cp-reinforced Mg matrix composite was compressed at the temperature of 270–420 °C and strain rate of 0.001–1 s^-1. Then, dynamic recrystallization（DRX） behavior of the composite was investigated by thermodynamic method and verified by microstructure analysis. Results illustrated that the composite possess the lower critical strain and higher DRX ratio as compared to monolithic Mg alloys during hot deformation process. The predicted DRX ratio increased with the proceeding of compression, which was well consistent with the experimental value. Results from thermodynamic calculation suggested that the occurrence of DRX could be promoted by Si Cp, which would be further proved by microstructure analysis. Formation of particle deformation zone around micron Si Cp played a significant role in promoting DRX nucleation. Nevertheless, the distribution of submicron Si Cp was increasingly uniform with the proceeding of compression, which could fully restrain grain growth. Therefore, the corporate effects of micron and submicron Si Cp on DRX contributed to the improvement of DRXed ratio and the refinement of grain size for the composite during compression process.

关键词： Magnesium matrix composite Deformation Dynamic recrystallization Microstructure Thermodynamic analysis

Analysis of Stored Energy in Cold-Rolled Copper Using Bulk and Microstructure-Based Techniques

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Acta Metallurgica Sinica(English Letters) 2016年第4期29卷 313-319页

作者： shan-Quan deng Andy Godfrey Wei Liu Key Laboratory of Advanced Materials (MOE) School of Materials Science and Engineering Tsinghua University

Measurements of stored energy have been obtained for samples of copper cold-rolled to von Mises strains between 0.42 and 5.21 using both differential scanning calorimetry （DSC）, and based on measurements of microstructural parameters in the transmission electron microscope （TEM）. In both cases, a linear increase in stored energy with strain is found. The ratio between the two measured values varies, however, over a significant range, indicating that some caution is needed in determining the relative difference in energy associated with deformation microstructure heterogeneities in a given sample. Comparison of the stored energy with the flow stress suggests that the TEM-based measurements reflect the dislocation density content responsible for the flow stress, but that the DSC technique additionally measures other contributions to the stored energy, such as the presence of balanced internal stresses.

关键词： Stored energy Differential scanning calorimetry Microstructure Flow stress Copper

Evolutionary Pattern and Effect of Administrative Division Adjustment During Urbanization of China:Empirical Analysis on Multiple Scales

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Chinese Geographical Science 2018年第5期28卷 758-772页

作者： YU Hu deng Yu XU shan Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Science Key Laboratory of Regional Sustainable Development Modeling Chinese Academy of Science

The adjustment of administrative divisions is one of the important factors guiding China's urbanization, which has profound economic and social effects for regional development. In this paper, we comprehensively describe the process of the adjustment of administrative divisions at provincial and municipal levels in China and summarize the effects on the basic structure and patterns of the spatial development. We quantitatively assess the effects on fields such as urbanization and social economy through the use of multidimensional scaling. The results show that: 1) Upgrading county to municipality(or city-governed district) is the main way of adjusting the administrative divisions. It is also an important factor in the spatial differentiation of interprovincial urbanization. China's population urbanization can be divided into four patterns including interprovincial migration, provincial migration, natural growth, and growth caused by the adjustment of administrative divisions, which is also the main reason for the increased Chinese urbanization rate at the provincial level. 2) Taking the city of Beijing as an example, we generalize five adjustment patterns made to administrative divisions: the set-up of sub-districts, the set-up of regional offices, the upgrading of townships to sub-districts, the upgrading of townships to towns, and the set-up of towns and the addition of new regional offices. We summarize the municipal urban spatial structure, including the sub-district office area in the central urban area, the regional office area in the new urban area, the mixed area of villages, towns, and sub-district offices in the suburb area, and the township area in the outer suburb area. 3) The adjustment of administrative divisions triggers a significant circulative accumulation effect, resulting in the spatial locking of population and industrial agglomeration. It affects the evolution of the urban spatial form and plays an important role in shaping the urban spatial st

关键词： administrative division adjustment evolutionary structure effect evaluation multidimensional scaling urbanization China

Progress in Mechanism of Astragalus membranaceus and Its Chemical Constituents on Multiple Sclerosis

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Chinese Journal of Integrative Medicine 2023年第1期29卷 89-95页

作者： PENG Yong deng Xiang YANG shan-shan NIE Wei TANG Yan-dan Department of Neurology Affiliated First Hospital of Hunan Traditional Chinese Medical CollegeZhuzhouHunan Province412000China

The primary chemical components of Astragalus membranaceus include polysaccharides,saponins,flavonoids,and amino *** studies have shown that Astragalus membranaceus has multiple functions,including improving immune function and exerting antioxidative,anti-radiation,anti-tumor,antibacterial,antiviral,and hormone-like *** membranaceus and its extracts are widely used in clinical practice because they have obvious therapeutic effects against various autoimmune diseases and relatively less adverse *** sclerosis(MS)is an autoimmune disease of central nervous system(CNS),which mainly caused by immune disorder that leads to inflammatory demyelination,inflammatory cell infiltration,and axonal degeneration in the *** this review,the authors analyzed the clinical manifestations of MS and experimental autoimmune encephalomyelitis(EAE)and focused on the efficacy of Astragalus membranaceus and its chemical components in the treatment of MS/EAE.

关键词： Astragalus membranaceus chemical components multiple sclerosis experimental autoimmune encephalomyelitis immunoregulation

Metabolomic characteristics of spontaneously hypertensive rats under chronic stress and the treatment effect of Danzhi Xiaoyao Powder, a traditional Chinese medicine formula

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Journal of Integrative Medicine 2022年第1期20卷 73-82页

作者： Shuai Chen Jin Hu deng-cheng Lu Hong-yi Liu shan-shan Wei College of Basic Medical Sciences Yunnan University of Chinese MedicineKunming 650500Yunnan ProvinceChina Department of Endocrinology Yunnan Provincial Hospital of Traditional Chinese MedicineKunming 650021Yunnan ProvinceChina Key Laboratory of Syndrome Micro-Differentiation of Yunnan Province Kunming 650500Yunnan ProvinceChina

Objective: Numerous studies have demonstrated the close relationship between chronic stress and blood pressure(BP). Hypertensive subjects exhibit exaggerated reactions to stress, especially higher BP. The mechanisms by which stress affects pre-existing hypertension still need to be explored. Danzhi Xiaoyao Powder(DP), a historical traditional Chinese medicine formula, is a promising treatment for BP control in hypertensive patients under stress. The present study investigated the metabolomic disruption caused by chronic stress and the treatment effect and mechanism of ***: Spontaneously hypertensive rats(SHRs) were subjected to chronic restraint stress(CRS) for 4 weeks. BP was measured via the tail-cuff method, and anxiety-like behavior was quantified using the elevated-plus-maze test. Meanwhile, DP was administered intragastrically, and its effects were observed. Global metabolomic analysis was performed using ultra-high-performance liquid chromatography-quadrupole time-of-flight mass spectrometry, followed by multivariate statistical analysis to detect differential metabolites and ***: DP alleviated the CRS-induced increase in BP and anxiety-like behavior. Systematic metabolic differences were found among the three study groups. A total of 29 differential plasma metabolites were identified in both positive-and negative-ion modes. These metabolites were involved in triglyceride metabolism, amino acid(phenylalanine, tryptophan, and glycine) metabolism, and steroid hormone ***: These findings expose the metabolomic disturbances induced by chronic stress in SHRs and suggest an innovative treatment for this disorder.

关键词： Hypertension Stress Metabolomics Danzhi Xiaoyao Powder