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Subwavelength negative-index waveguiding enabled by coupled spoof magnetic localized surface plasmons

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Photonics Research 2019年第3期7卷 274-282页

作者： ZHEN liAO GUO QING LUO BEN geng CAI BAI CAO PAN WEN HUI CAO Key Laboratory of RF Circuits & System of Ministry of Education Institute of Antennas and Microwave Technology Hangzhou Dianzi UniversityXiasha High Education Park

Magnetic localized surface plasmon modes are supported on metallic spiral structures. Coupling mechanisms for these metamaterial resonators, which are the joint action of magnetic and electric coupling, are studied. Based on the strong coupling, spoof magnetic plasmon modes propagating in the backward direction are proposed along a chain of subwavelength resonators. The theoretical analysis, numerical simulations, and experiments are in good agreement. The proposed novel route for achieving negative-index waveguiding has potential applications in integrated devices and circuits.

关键词： Subwavelength negative-index waveguiding coupled spoof magnetic localized surface plasmons Magnetic localized surface plasmon modes

The ac Stark shifts of the terahertz clock transitions of barium

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Chinese Physics B 2015年第10期24卷 110-114页

作者：余庚华耿鹰鸽李隆周超段丞博柴瑞鹏杨永明 School of Science Xi'an University of Architecture and Technology School of Science Chang'an University

Wavelength-dependent AC Stark shifts and magic wavelengths of the terahertz clock transitions between the metastable triplet states 6s5d3D1 and 6s5d3D2are investigated with considering the optical lattice trapping of barium atoms with the linearly polarized laser. The trap depths and the slopes of light shift difference with distinct magic wavelengths of the optical lattices are also discussed in detail. Several potentially suitable working points for the optical lattice trapping laser are recommended and selected from these magic wavelengths.

关键词： AC Stark shift optical lattice terahertz clock magic wavelength

TC-Fuse: A Transformers Fusing CNNs Network for Medical Image Segmentation

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Computer Modeling in Engineering & Sciences 2023年第11期137卷 2001-2023页

作者： Peng geng Ji Lu Ying Zhang Simin Ma Zhanzhong Tang Jianhua liu School of Information Sciences and Technology Shijiazhuang Tiedao UniversityShijiazhuang050043China College of Resources and Environment Xingtai UniversityXingtai054001China School of Electrical and Electronic Engineering Shijiazhuang Tiedao UniversityShijiazhuang050043China

In medical image segmentation task,convolutional neural networks(CNNs)are difficult to capture long-range dependencies,but transformers can model the long-range dependencies ***,transformers have a flexible structure and seldom assume the structural bias of input data,so it is difficult for transformers to learn positional encoding of the medical images when using fewer images for *** solve these problems,a dual branch structure is *** one branch,Mix-Feed-Forward Network(Mix-FFN)and axial attention are adopted to capture long-range dependencies and keep the translation invariance of the ***-FFN whose depth-wise convolutions can provide position information is better than ordinary positional *** the other branch,traditional convolutional neural networks(CNNs)are used to extract different features of fewer medical *** addition,the attention fusion module BiFusion is used to effectively integrate the information from the CNN branch and Transformer branch,and the fused features can effectively capture the global and local context of the current spatial *** the public standard datasets Gland Segmentation(GlaS),Colorectal adenocarcinoma gland(CRAG)and COVID-19 CT Images Segmentation,the F1-score,Intersection over Union(IoU)and parameters of the proposed TC-Fuse are superior to those by Axial Attention U-Net,U-Net,Medical Transformer and other *** F1-score increased respectively by 2.99%,3.42%and 3.95%compared with Medical Transformer.

关键词： Transformers convolutional neural networks fusion medical image segmentation axial attention

Collision tumor of the esophagus:a report of five cases

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Chinese Medical Journal 2020年第19期133卷 2386-2388页

作者： Guo-Chao Zhang Bing-Zhi Wang li-Yu Wang Ya-Long Wang Wei Guo Nan Sun Shu-geng Gao Qi Xue Jie He Department of Thoracic Surgery National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Department of Pathology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China.

To the Editor:Collision tumors are rare neoplasms comprising two cell populations that develop in juxtaposition to one another with minimal to no areas of intermingling.[1]The most common sites at which collision tumors occur have been reported to include the lungs,cranium,rectum,liver,uterus,bladder,and testis.[2,3]However,the biologic behavior of esophageal collision tumors remains largely unknown,with only a small number of studies originating from case reports having been *** study reports five cases of esophageal collision tumors to provide evidence-based recommendations for the care of future patients.

关键词： cases neoplasms bladder

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能量高效与移动预测的路由算法分析

重庆大学学报（自然科学版） 2010年第10期33卷 88-93页

作者：朱斌曾孝平廖红云陈礼韦耿重庆大学通信工程学院重庆400044 重庆金美通信有限责任公司重庆400035

传统的无线移动自组网路由协议无法实现能量均衡消耗,也不能很好的适应网络拓扑动态变化,为此提出了一种新的基于能量高效与移动预测的按需路由算法。该路由算法在路由发现时排除不稳定链路,让能量较多的节点优先参与路由请求分组的转发... 详细信息

传统的无线移动自组网路由协议无法实现能量均衡消耗,也不能很好的适应网络拓扑动态变化,为此提出了一种新的基于能量高效与移动预测的按需路由算法。该路由算法在路由发现时排除不稳定链路,让能量较多的节点优先参与路由请求分组的转发,同时通过预测链路连接时间采用主动式局部路由修复策略,在路径实际失效之前就完成修复工作。仿真实验表明,和传统的AODV协议相比,文中提出的算法在路由控制开销略有增加的情况下,提高了分组平均投递率,降低了数据分组端到端平均时延,同时能够实现网络中的能量高效,延长了网络寿命,因此具有较强的实用性。

关键词：移动自组网路由协议能量高效移动预测

Vaccine booster efficiently inhibits entry of SARS-CoV-2 omicron variant

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Cellular & Molecular Immunology 2022年第3期19卷 445-446页

作者： Wei Zhang linfen Huang Gang Ye Qibin geng Nwando Ikeogu Morgan Harris Gayathri Dileepan Kristina Burrack Lanying Du Anne Frosch Fang li Department of Veterinary and Biomedical Sciences University of MinnesotaSaint PaulMNUSA Center for Coronavirus Research University of MinnesotaSaint PaulMNUSA Department of Medicine University of MinnesotaMinneapolisMNUSA Hennepin Healthcare Department of Medicine Hennepin Healthcare Research InstituteMinneapolisMNUSA Institute for Biomedical Sciences Georgia State UniversityAtlantaGAUSA

The newly emerged omicron strain of SARS-CoV-2 is spreading fast globally,replacing the previously dominant delta strain in many parts of the world[1].Compared to the early prototypic strains,the delta strain evades the human immune system more easily,causing many breakthrough infections in vaccinated people[2].It is imperative to understand in a timely fashion whether the omicron strain escapes immune *** information will be critical for public health measures.

关键词： strain breakthrough globally

社区非酒精性脂肪肝病人群常见慢性病共病组合及变化情况分析

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中国初级卫生保健 2024年第2期38卷 30-33页

作者：阚云龙李咏梅唐敏华耿扬博赵根明姜永根复旦大学公共卫生学院上海200032 上海市松江区疾病预防控制中心上海201600 上海市松江区中山社区卫生服务中心上海201600

目的:了解社区非酒精性脂肪肝病人群常见慢性病共病组合及变化情况,为社区人群的慢性病共病防治提供科学依据。方法:基于上海市自然人群队列松江子队列,针对社区人群于2016年和2019分别开展基线调查与随访,采用问卷调查收集人群常见慢... 详细信息

目的:了解社区非酒精性脂肪肝病人群常见慢性病共病组合及变化情况,为社区人群的慢性病共病防治提供科学依据。方法:基于上海市自然人群队列松江子队列,针对社区人群于2016年和2019分别开展基线调查与随访,采用问卷调查收集人群常见慢性病患病情况,比较随访前后非酒精性脂肪肝病患者共患其他慢性病的变化情况,中位随访时间为2.96年。结果:随访前后比较,社区人群非酒精性脂肪肝病总体患病率由38.68%增长至40.78%,单纯患非酒精性脂肪肝病人群占比由34.60%提高至37.92%,共患病以高血压、糖尿病、高脂血症、甲状腺疾病、慢性胃肠炎最为常见,随访阶段发现共患高血压和糖尿病的人群占比进一步升高。结论:社区人群非酒精性脂肪肝病患病率较高,共患高血压、糖尿病、高脂血症最为常见。因此,社区非酒精性脂肪肝病人群共患其他慢性病的调查结果和慢性病管理应引起社区医疗卫生机构的重视,从而促进社区人群的健康水平。

关键词：非酒精性脂肪肝病慢性病共病横断面研究社区卫生服务

Boosting a sub-10 nm nanogap array by plasmon-triggered waveguide resonance

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Photonics Research 2020年第12期8卷 1850-1856页

作者： YU TIAN HAILONG WANG YIJIA geng lili CONG YU liU WEIQING XU SHUPING XU State Key Laboratory of Supramolecular Structure and Materials Institute of Theoretical ChemistryCollege of ChemistryJilin UniversityChangchun 130012China State Key Laboratory of Applied Optics Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China

Gap-type metallic nanostructures are widely used in catalytic reactions,sensors,and photonics because the hotspot effect on these nanostructures supports giant local electromagnetic field *** achieve hotspots,researchers devote themselves to reducing gap distances,even to 1 ***,current techniques to fabricate such narrow gaps in large areas are still ***,a new coupling way to boost the sub-10 nm plasmonic nanogap array is developed,based on the plasmon-triggered optical waveguide resonance via near-field *** effect leads to an amplified local electromagnetic field within the gap regions equivalent to narrower gaps,which is evidenced experimentally by the surface-enhanced Raman scattering intensity of probed molecules located in the gap and the finite-difference time-domain numerical simulation *** study provides a universal strategy to promote the performance of the existing hotspot configurations without changing their geometries.

关键词： waveguide scattering narrow

Triterpenoids from Uncaria rhynchophylla and Their PTP1B Inhibitory Activity

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Phyton-International Journal of Experimental Botany 2022年第8期91卷 1809-1816页

作者： Shuaibin Luo Xuemei Zhang Kang He Juan Zou Chang-An geng Guizhou University of Traditional Chinese Medicine Guiyang550025China State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesYunnan Key Laboratory of Natural Medicinal ChemistryKunming650201China

Uncaria rhynchophylla(Gouteng)is a famous traditional Chinese medicine used for psychiatric and hypotensive purposes in *** this study,the ethyl acetate(EtOAc)part of *** was revealed with protein tyrosine phosphatase 1B(PTP1B)inhibitory *** investigation on the EtOAc part yielded one new triterpenoid,3β-formyloxy-6β,19α-dihydroxyurs-12-en-28-oic acid(1)and four known ones,3β,6β,19α-trihydroxyurs-12-en-28-oic acid(2),2-oxopomolic acid(3),3β,19α-dihydroxy-6-oxo-olean-12-en-28-oic acid(4)and sumaresinolic acid(5).The structure of compound 1 was determined by extensive HRESIMS,IR,1D and 2D NMR spectroscopic *** ursane-type triterpenoids(2 and 3)showed selective inhibition on PTP1B with IC50 values of 48.2 and 178.7μ*** enzyme kinetic study suggested that compounds 2 and 3 were mixtype inhibitors on PTP1B with Ki values of 15.6 and 132.5μ*** investigation manifests the antidiabetic potency of *** with triterpenoids as the active constituents.

关键词： Uncaria rhynchophylla triterpenoids antidiabetic effects PTP1B inhibitors