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Realization of edge states along a synthetic orbital angular momentum dimension

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Photonics Research 2025年第1期13卷 87-97页

作者： YU-WEI LIAO MU yang HAO-QING ZHANG ZHI-HE HAO JUN HU tian-XIANG ZHU ZONG-QUAN ZHOU XI-WANG LUO JIN-SHI XU CHUAN-FENG LI GUANG-CAN GUO CAS Key Laboratory of Quantum Information University of Science and Technology of China Anhui Province Key Laboratory of Quantum Network University of Science and Technology of China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of China Hefei National Laboratory University of Science and Technology of China

Synthetic dimensions have emerged as promising methodologies for studying topological physics, offering great advantages in controllability and flexibility. Photonic orbital angular momentum(OAM), characterized by discrete yet unbounded properties, serves as a potent carrier for constructing synthetic dimensions. Despite the widespread utilization of synthetic OAM dimensions in the investigation of topological physics, the demonstration of an edge along such dimensions has remained challenging, significantly constraining the exploration of important topological edge effects. In this study, we establish an edge within a Floquet Su–Schrieffer–Heeger OAM lattice, creating approximate semi-infinite lattices by introducing a pinhole in the optical elements within a cavity. Leveraging the spectral detection capabilities of the cavity, we directly measure the phase transitions of zero(±π) energy edge states, elucidating the principle of bulk-edge correspondence. Furthermore, we dynamically observe the migration of edge modes from the gap to the bulk by varying the edge phase, and we reveal that interference near the surface results in the discretization of the spectrum. We offer, to our knowledge,a novel perspective for investigating edge effects and provide an important photonic toolbox in topological photonics.

关键词： Beam splitters Information processing Optical elements Orbital angular momentum multiplexing Photonics Quantum information

Advances in ethnopharmacology,phytochemistry and pharmacology of Erigerontis Herba and its Chinese medicine prescriptions

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Traditional Medicine Research 2025年第1期10卷 44-61页

作者： yang Zhou Yuan-Yan Huang Ding-Yue Shang Ying Chen Meng tian Cheng-Yu Jin Xin Lu Bing-Chun Yan Han-Qing Pang Institute of Translational Medicine School of MedicineYangzhou UniversityYangzhou 225009China Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases Yangzhou UniversityYangzhou 225009China School of Medicine Nanjing University of Chinese MedicineNanjing 210023China State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Guangxi Normal UniversityGuiling 541004China.

Erigerontis Herba(EH),the dried whole plant of Erigeron breviscapus,is well-known for circulating blood,activating meridians to alleviate pain,expelling wind,and clearing away *** has been extensively utilized in southern China for the treatment of stroke hemiplegia,chest stuffiness and pains,rheumatic arthralgia,headache,and *** review focuses on the botany,ethnopharmacology,phytochemistry,pharmacology and toxicity of EH and its related prescriptions to offer new insights for prospective research of *** information about EH was retrieved from ancient records and books,PubMed,China National Knowledge Infrastructure,Chinese Pharmacopoeia,Web of Science,Doctoral and Master’s Theses,and various electronic *** is a member of Compositae family and is mainly grown in southern *** Chinese medicine records that EH has the effects of circulating blood and removing blood stasis,expelling wind,and removing cold,as well as relieving rigidity of muscle and relieving *** now,nearly 200 ingredients have been characterized from EH,including flavonoids,caffeoyls,aromatic acids,coumarins,pentacyclic terpenoids,volatile oil and other *** extracts,EH related prescriptions(Dengzhan Xixin injection,Dengzhan Shengmai capsules,etc.)or compounds(scutellarin,scutellarein,etc.)possessed obvious therapeutic effects of ischemic stroke,cerebral hemorrhage,myocardial infarction,Alzheimer’s disease,diabetes and its complications,gastric cancer,bone,and joint degenerative ***,the major active compound of EH,has been used as a quality *** no obvious toxicity of EH has been *** to its traditional applications,ethnopharmacology,phytochemistry,pharmacology,and toxicity,EH was applied as a valuable herb for clinical application in food and medicine *** several compounds have been shown to possess diverse biological activities,the underlying mechanisms of their actions remain *** fully exploi

关键词： Erigeron breviscapus traditional applications ethnopharmacology phytochemistry pharmacology

Theoretical Analysis on Self-Defocusing Mode-Locking in a Ring Resonator

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Chinese Physics Letters 1994年第2期11卷 79-82页

作者： zang Weiping tian Jianguo ZHANG Guangyin Department of Physics Nankai UniversityTianjin 300071

A theoretical analysis of passive mode-locking in a thermal-stable ring cavity containing a Kerr medium and an aperture is *** analysis employing the beam propagation theory shows that the power dependence of the cavity loss is extremely sensitive to the relative location of the Kerr medium and the aperture,and is different for the counterpropagating modes,so the unidirectional operation is *** combination of Kerr medium with an aperture acts as a p sition feedback,which is similar to the effect of a saturable absorber.

关键词： passive cavity absorber

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含V微合金钢连铸坯高温热塑性的表征及应用

中国冶金 2025年第1期35卷 70-76+120页

作者：李岩杰臧振东李立勋杨洋李哲河钢集团唐山钢铁集团有限责任公司

铸坯高温热塑性是表征铸坯性能质量的重要依据，传统试验方法是在不同温度下，以低应变速率缓慢拉伸圆柱试样，直至试样断裂，通过分析拉伸温度与断面收缩率的关系，对铸坯高温热塑性进行评定。但铸坯实际冷却过程较为复杂，且影响因素... 详细信息

铸坯高温热塑性是表征铸坯性能质量的重要依据，传统试验方法是在不同温度下，以低应变速率缓慢拉伸圆柱试样，直至试样断裂，通过分析拉伸温度与断面收缩率的关系，对铸坯高温热塑性进行评定。但铸坯实际冷却过程较为复杂，且影响因素众多，若仅用单一变量对铸坯高温热塑性进行分析，得到的信息较为局限。为此，在常规高温拉伸试验的基础上，创新性地设计了铸坯冷却返温热塑性试验以及不同冷却速率热塑性试验，以含V微合金钢连铸坯为研究对象，分析了高温拉伸温度、冷却转折温度以及不同冷却速率对铸坯高温热塑性的影响，通过绘制连铸坯高温热塑性综合图，补充了铸坯边角位置冷却返温过程对热塑性的影响，实现了对铸坯高温热塑性更加系统、全面的表征，并为含V微合金钢边角开裂问题的技术攻关提供了有效的基础数据支撑；同时，通过绘制铸坯连续冷却热塑性图，实现了连铸冷却速率工艺控制的图形及数值表征，从而为制定最优连铸工艺路线提供了方法和依据。

关键词：含V微合金钢连铸坯冷却返温热塑性不同冷却速率热塑性连续冷却热塑性图

职普分轨还是统整?——基于知识的职业教育课程审视与反思

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职教论坛 2025年第1期41卷 47-55页

作者：谢莉花李涵田洋同济大学职业技术教育学院上海200092 湘潭大学化工学院湖南湘潭411105

分轨或统整一直以来都是教育体系与课程发展的焦点,尤其是职普分轨一直是学界热议的话题。对于职业教育来说,更重要的是基于知识的职业教育课程建设问题,而当基于知识的课程得到进一步发展后,分轨问题将不再重要。传统的学科本位、标准... 详细信息

分轨或统整一直以来都是教育体系与课程发展的焦点,尤其是职普分轨一直是学界热议的话题。对于职业教育来说,更重要的是基于知识的职业教育课程建设问题,而当基于知识的课程得到进一步发展后,分轨问题将不再重要。传统的学科本位、标准本位和联结本位三种职业知识取向虽然关注了知识的来源,讨论了知识由学科专家还是由雇主控制的社会利益表达问题,但都避开了对知识本身的研究。基于迈克尔·扬的职业知识概念化思想,职业知识的完整内涵能够得到进一步阐释,以职业知识为基础的职业教育课程的教育价值也更加明晰。未来,我国职业教育课程的发展需要进一步完善职业知识体系、增强职业教育课程的教育属性、促进职普融合课程的发展。

关键词：职业知识职业教育课程分轨统整职普关系

Layered metal carbo-selenide Nb2CSe2 with van der Waals interlayer coupling

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JOURNAL OF ADVANCED CERAMICS 2025年第1期14卷 101-110页

作者： Wang, Junchao Cheng, Renfei Hu, Tao Tang, Xinyue Liang, Yan tian, Min Xiong, Ting Lu, Qiuhong Zhu, Qi yang, Zhiqing Wang, Xiaohui Zhou, Yanchun Chinese Acad Sci Inst Met Res Shenyang Natl Lab Mat Sci Shenyang 110016 Peoples R China Univ Sci & Technol China Sch Mat Sci & Engn Shenyang 110016 Peoples R China Suzhou Univ Sci & Technol Inst Mat Sci & Devices Sch Mat Sci & Engn Suzhou 215009 Peoples R China Shenyang Ligong Univ Sch Mat Sci & Engn Shenyang 110159 Peoples R China Ji Hua Lab Foshan 528000 Peoples R China Northeastern Univ Sch Mat Sci & Engn Key Lab Anisotropy & Texture Mat Minist Educ Shenyang 110819 Peoples R China Zhengzhou Univ Sch Mat Sci & Engn Zhengzhou 450001 Peoples R China

The stacking structure of Nb2CSe2, a newly synthesized layered metal carbo-selenide, was elucidated by scanning transmission electron microscopy. Nb2CSe2 features Se-Nb-C-Nb-Se quintuple atomic layers. These layers are stacked in Bernal mode. In this mode, Nb2CSe2 crystallizes in a trigonal symmetry (space group P 3 m 1, No. 164), with lattice parameters of a = 3.33 & Aring;and c = 18.20 & Aring;. Electronic structure calculations indicate that the metal carbo-selenide has Fermi energy crossing the bands where it touches to give a zero gap, indicating that it is an electronic conductor. As evidenced experimentally, the electrical conductivity is as high as 6.6x105 Sm-1, outperforming the counterparts in the MXene family. Owing to the layered structure, the bonding in Nb2CSe2 with an ionic formula of (Nb 1.48+ ) 2 (C 1.74- )(Se 0.61- ) 2 is highly anisotropic, with metallic-covalent-ionic bonding in intralayers and weak bonding between interlayers. The layered nature is further evidenced by elastic properties, interlayer energy, and friction coefficient determination. These characteristics indicate that Nb2CSe2 is an analog of molybdenum disulfide (MoS2), which is a typical binary van der Waals (vdW) solid. Moreover, vibrational properties are reported, which may offer an optical identification standard for new ternary vdW solids in spectroscopic studies, including Raman scattering and infrared absorption.

关键词： MXene Nb2CSe2 crystal structure electronic structure elastic properties interlayer coupling Raman spectroscopy friction coefficient

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离子吸附型稀土矿中离子相稀土浸提方法研究

中国稀土学报 2025年第1期43卷 173-182页

作者：刘卫田戈郭颖超谷周雷杨忠芳华北地勘生态资源监测中心(河北)有限公司河北承德067000 中国地质大学地球科学与资源学院北京100083

采用智能精密型摇床作为离子吸附型稀土矿中离子相稀土提取的前处理设备,以(NH_(4))_(2)SO_(4)溶液作为浸提剂,对样品粒度和前处理条件进行了优化,采用电感耦合等离子体质谱法(ICP-MS)进行分析检测。结果表明:采用1 mm对辊破碎的稀土原... 详细信息

采用智能精密型摇床作为离子吸附型稀土矿中离子相稀土提取的前处理设备,以(NH_(4))_(2)SO_(4)溶液作为浸提剂,对样品粒度和前处理条件进行了优化,采用电感耦合等离子体质谱法(ICP-MS)进行分析检测。结果表明:采用1 mm对辊破碎的稀土原样,选择20 g·L^(-1)的(NH_(4))_(2)SO_(4)溶液作为浸提剂,以往复振荡方式浸提,在25℃和190 r·min^(-1)的频率下振荡浸提2 h能实现离子相稀土的最佳提取。该方法加标回收率在95.0%~101.7%之间,离子相稀土总量的相对标准偏差(RSD)为2.1%~3.4%,方法简单、可靠性高,非常适合大批量稀土样品检测及矿床评价。

关键词：离子相稀土浸提粒径电感耦合等离子体质谱仪(ICP-MS)

Research landmarks on the 60th anniversary of Epstein-Barr virus

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Science China(Life Sciences) 2025年第2期68卷 354-380页

作者： Lan-Yi Zhong Chu Xie Le-Le Zhang Yan-Lin yang Yuan-Tao Liu Ge-Xin Zhao Guo-Long Bu Xian-Shu tian Zi-Ying Jiang Bo-Yu Yuan Peng-Lin Li Pei-Huang Wu Wei-Hua Jia Christian Münz Benjamin E.Gewurz Qian Zhong Cong Sun Mu-Sheng Zeng State Key Laboratory of Oncology in South China Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapyGuangdong Provincial Clinical Research Center for CancerSun Yat-sen University Cancer CenterGuangzhou 510060China Viral Immunobiology Institute of Experimental ImmunologyUniversity of ZürichZürich 8092Switzerland Division of Infectious Diseases Department of MedicineBrigham and Women’s HospitalBoston MA 02115USA Department of Microbiology Harvard Medical SchoolBoston MA 02115USA Harvard Program in Virology Boston MA 02115USA Broad Institute of Harvard and MIT Cambridge MA 02142USA

Epstein-Barr virus(EBV),the first human oncovirus discovered in 1964,has become a focal point in virology,immunology,and oncology because of its unique biological characteristics and significant role in human *** we commemorate the 60th anniversary of EBV's discovery,it is an opportune moment to reflect on the major advancements in our understanding of this complex *** this review,we highlight key milestones in EBV research,including its virion structure and life cycle,interactions with the host immune system,association with EBV-associated diseases,and targeted intervention strategies.

关键词： Epstein-Barr virus oncovirus immune response epidemiology vaccines antibodies

基于MAPK/NF-κB通路探讨归肾丸加味对多囊卵巢综合征大鼠炎症的影响

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中国实验方剂学杂志 2025年第5期31卷 86-94页

作者：田珈瑜秦文熠杨涓荣晓凤重庆医科大学附属第一医院

目的：探讨归肾丸加味通过调控丝裂原活化蛋白激酶（MAPK）/核转录因子-κB（NF-κB）通路抑制多囊卵巢综合征（PCOS）大鼠炎症的作用机制。方法：按照随机数字表法将60只SPF级雌性SD大鼠随机分为正常组10只及PCOS模型组50只。正常组予... 详细信息

目的：探讨归肾丸加味通过调控丝裂原活化蛋白激酶（MAPK）/核转录因子-κB（NF-κB）通路抑制多囊卵巢综合征（PCOS）大鼠炎症的作用机制。方法：按照随机数字表法将60只SPF级雌性SD大鼠随机分为正常组10只及PCOS模型组50只。正常组予以常规喂养，模型组采用来曲唑(1 mg·kg-1·d-1)灌胃21 d建立PCOS模型。将建模成功的大鼠再次随机分为模型组，达英-35组(0.2 g·kg-1·d-1)和归肾丸加味高、中、低剂量组(16.04、8.02、4.01 g·kg-1·d-1)，正常组和模型组予以等体积生理盐水，持续灌胃28 d。治疗结束后，采用革兰氏染色观察各组大鼠阴道涂片观察动情周期；酶联免疫吸附测定法（ELISA）检测血浆中卵泡刺激素（FSH）、雌二醇（E2）、黄体生成素（LH）、睾酮（T）、孕酮（PROG）、血浆及卵巢组织中白细胞介素-1β（IL-1β）、肿瘤坏死因子-α（TNF-α）、白细胞介素-10（IL-10）水平，并计算LH/FSH；苏木素-伊红（HE）染色观察卵巢组织形态学变化；蛋白免疫印迹法（Western blot）检测大鼠卵巢组织中细胞外调节蛋白激酶（ERK）、c-Jun氨基末端激酶（JNK）、p38 MAPK、NF-κB p65、NF-κB抑制蛋白α（IκBα）、磷酸化（p）-JNK、p-ERK、p-p38 MAPK、p-NF-κB p65、p-IκBα的表达；实时荧光定量聚合酶链式反应（Real-time PCR）检测大鼠卵巢组织中ERK、JNK、p38 MAPK、NF-κB p65、IκBα m RNA表达。结果：与正常组比较，模型组大鼠处于动情间期，卵巢囊泡数量明显增多，颗粒细胞及黄体生成均明显减少（P<0.05），血浆FSH、E2表达降低，LH、T及LH/FSH明显升高（P<0.05）；与模型组比较，归肾丸加味高、中、低剂量组均能有效改善PCOS大鼠的发情周期，增加颗粒细胞及黄体的生成，减少囊泡数量，增加FSH、E2的表达，降低LH、T及LH/FSH（P<0.05,P<0.01），且呈剂量依赖性，以归肾丸加味高剂量组疗效最佳，故后续机制实验在正常组、模型组和归肾丸加味高剂量组中进行。与模型组比较，归肾丸加味高剂量组能明显降低血浆及卵巢组织中IL-1β、TNF-α水平，升高IL-10表达（P<0.05,P<0.01），且能明显降低PCOS大鼠p-ERK、p-JNK、p-p38 MAPK、p-NF-κB p65、p-IκBα蛋白表达，增加IκBα蛋白表达（P<0.01）；同时，归肾丸加味高剂量组明显降低ERK、JNK、p38 MAPK、NF-κB p65 m RNA表达（P<0.05,P<0.01）。结论：归肾丸加味能有效改善来曲唑诱导的PCOS大鼠的卵巢功能，并对其具有抗炎作用，其机制可能与抑制MAPK/NF-κB通路有关。

关键词：多囊卵巢综合征归肾丸加味炎症丝裂原活化蛋白激酶(MAPK) 核转录因子-κB(NF-κB)