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Measurement of atmospheric non-reciprocity effects for satellite-based two-way time-frequency transfer

Photonics Research 2024年第6期12卷 1274-1282页

作者： TING ZENG QI SHEN YUAN CAO JIAN-YU GUAN MENG-ZHE LIAN JIN-JIAN HAN LEI hou JIAN LU XIN-XIN peng MIN LI WEI-YUE LIU JIN-CAI WU YONG WANG JUAN YIN JI-GANG REN HAI-FENG JIANG QIANG ZHANG CHENG-ZHI peng JIAN-WEI PAN Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences University of Science and Technology of ChinaHefei 230026China Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaShanghai 201315China Hefei National Laboratory University of Science and Technology of ChinaHefei 230094China Faculty of Information Science and Engineering Ningbo UniversityNingbo 315211China Key Laboratory of Space Active Opto-Electronic Technology Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China

Future optical clock networks will require high-precision optical time-frequency transfer between satellites and ground ***,due to atmospheric turbulence,satellite motion and time delay between the satellite–ground transmission links will cause spatial and temporal variations,respectively,resulting in the breakdown of the time-of-flight reciprocity on which optical two-way time-frequency transfer is ***,we experimentally simulate the atmospheric effects by two-way spatio-temporally separated links between two stationary terminals located 113 km apart and measure the effects for optical two-way time-frequency *** experiment shows that the effect on the link instability is less than 2.3×10^(−19) at 10,000 *** indicates that when the link instability of satellite-ground optical time-frequency transfer is on the order of 10^(−19),it is not necessary to consider the atmospheric non-reciprocity effects.

关键词： breakdown transfer satellite

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多输入多输出雷达搜索模式下5G毫米波射频算法

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吉林大学学报（工学版） 2024年第3期54卷 836-841页

作者：黄志祥彭照楠侯学师陈谦安徽大学电子信息工程学院合肥230601

为提升毫米波在射频传输中的传输安全,提出了多输入多输出(MIMO)雷达搜索模式下5G毫米波射频算法。根据5G毫米波的传输特性,获取了MIMO雷达搜索模式的雷达截获因子,建立了毫米波射频隐身模型并获取目标函数,计算了雷达搜索模式的射频截... 详细信息

为提升毫米波在射频传输中的传输安全,提出了多输入多输出(MIMO)雷达搜索模式下5G毫米波射频算法。根据5G毫米波的传输特性,获取了MIMO雷达搜索模式的雷达截获因子,建立了毫米波射频隐身模型并获取目标函数,计算了雷达搜索模式的射频截获概率。基于毫米波信道稀疏性结果结合贝叶斯算法获取了毫米波射频通道的最佳估计值,从而计算出射频通道最佳值,利用估计后的信号传输隐身后的射频实现射频传输。实验结果表明,本文方法在毫米波射频传输时间为140 s时,信纳比ρ高达0.83。证明使用该方法开展毫米波射频传输时,毫米波传输质量高,不易发生相位幅值的变形,可实现5G毫米波射频的高质量传输。

关键词：多输入多输出雷达搜索模式 5G毫米波射频算法射频隐身贝叶斯算法

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Modeling and Performance Analysis of UAV-Aided Millimeter Wave Cellular Networks with Stochastic Geometry

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China Communications 2024年第6期21卷 146-162页

作者： Li Junruo Wang Yuanjie Cui Qimei hou Yanzhao Tao Xiaofeng National Engineering Laboratory for Mobile Network Technologies Beijing University of Posts and TelecommunicationsBeijing 100876China National Computer Network Emergency Response Technical Team/Coordination Center of China(CNCERT/CC) Beijing 100029China Department of Broadband Communication Peng Cheng LaboratoryShenzhen 518055China

UAV-aided cellular networks,millimeter wave(mm-wave) communications and multi-antenna techniques are viewed as promising components of the solution for beyond-5G(B5G) and even 6G *** leveraging the power of stochastic geometry,this paper aims at providing an effective framework for modeling and analyzing a UAV-aided heterogeneous cellular network,where the terrestrial base stations(TBSs) and the UAV base stations(UBSs) coexist,and the UBSs are provided with mm-wave and multi-antenna *** modeling the TBSs as a PPP and the UBSs as a Matern hard-core point process of type Ⅱ(MPH-Ⅱ),approximated but accurate analytical results for the average rate of the typical user of both tiers are derived through an approximation method based on the mean interference-to-signal ratio(MISR) *** influence of some relevant parameters is discussed in detail,and some insights into the network deployment and optimization are *** results show that some trade-offs are worthy of being considered,such as the antenna array size,the altitude of the UAVs and the power control factor of the UBSs.

关键词： average rate downlink millimeter wave point process theory SIR stochastic geometry UAVaided cellular networks

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Embedded Majorana islands

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Science China(Physics,Mechanics & Astronomy) 2024年第9期67卷 154-164页

作者： Jin-Xing hou Alex Weststrom Rui Wang Wen-Li Yang Jian Li Institute of Modern Physics Northwest UniversityXi’an 710127China Department of Physics School of ScienceWestlake UniversityHangzhou 310030China Shaanxi Key Laboratory for Theoretical Physics Frontiers Xi’an 710127China Institute of Natural Sciences Westlake Institute for Advanced StudyHangzhou 310024China National Laboratory of Solid State Microstructures and Department of Physics Nanjing UniversityNanjing 210093China Collaborative Innovation Center for Advanced Microstructures Nanjing 210093China peng Huanwu Center for Fundamental Theory Xi’an 710127China

Mesoscopic superconducting islands hosting Majorana zero modes(MZMs),or Majorana islands in short,offer a prototype of topological *** this work we investigate theoretically the model of a generic Majorana island tunneling-coupled to a singlepiece metallic substrate,hence an embedded Majorana *** show the crucial consequences of an interplay between the topological ground states nonlocally addressed by the MZMs and the metallic bath with coherent electron propagation:on the one hand,the topological degeneracy on the Majorana island can be preserved,by virtue of the particle-hole symmetry,despite the apparent bath-induced coupling between MZMs;on the other hand,the electronic interference in the metallic bath may lead to profound alterations to the renormalization group behavior of the hybrid system towards low energy/temperature compared with conventional Kondo *** work serves to establish the model of embedded Majorana islands as an experimentally relevant and theoretically intriguing problem particularly in the direction of topological quantum computation.

关键词： topological quantum computation Majorana zero modes topological qubit mesoscopic superconductor topological Kondo effect

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Dcalycinumines A-E,Alkaloids with Cytotoxic Activities of Nasopharyngeal Carcinoma Cells from Daphniphyllum calycinum

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Chinese Journal of Chemistry 2024年第1期42卷 35-42页

作者： Qing Tang Xiao-Yong Dai Qiang Lin Zhi-peng Ling Yi-Kun Hao Tian-Xi Zhu Ji-Hui Zhang Yi-Bo hou Yao-Lan Li Lai-Qiang Huang Jing-Hao Wang Guo-Cai Wang Yu-Bo Zhang Guangdong Clinical Translational Centerfor Targeted Drug Department of PharmacologySchoolof MedicineJinan University GuangzhouGuangdong 510632China Institute of Traditional Chinese Medicine&Natural Products Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs ResearchCollegeof PharmacyJinan UniversityGuangzhouGuangdong511443China Institute of Biopharmaceutical and Health Engineering Shenzhen Key Laboratory of Gene and Antibody TherapyState Key Laboratory of Chemical OncogenomicsShenzhen International Graduate SchoolTsinghua UniversityShenzhenGuangdong 518055China The Guangzhou Key Laboratoryof Basic and Translational Research on Chronic Disease Department of PharmacyThe First Affiliated HospitalJinan UniversityGuangzhouGuangdong 510630China

Fivenovel Daphniphyllum alkaloids,named dcalycinumines A-E(1-4,6),andeight previously described Daphniphyllum alkaloids(5,7-13)were isolated from Daphniphyllum *** 1 is the first Daphniphyllum alkaloid possessing a highly rearranged 6/6/6/7/5/6 hexacyclic architecture with a unique 3-methyl-1-azabicyclo[4,4,0]decane ring *** 2 represents a rare diamino Daphniphyllum alkaloid with an unprecedented 6/5/5/6/6/5 carbon skeleton featuring a unique 1-aza-6-azaspiro[4,5]decane unit,whereas 3 also represents a rare diamino Daphniphyllum alkaloid as a possible precursor of *** 4 is the second example of c-22-nor yuzurimine-type *** structures and absolute configurations were elucidated by HRESIMS,NMR spectroscopic analyses,EcD calculations,and single-crystal X-ray ***,compound 1 showed remarkable antitumor activities,which could inhibit the proliferation,migration and invasion of nasopharyngeal carcinoma cells,and promoted nasopharyngeal carcinoma cells apoptosis.

关键词： Daphniphyllum calycinum Natural products Daphniphyllum alkaloid Structural elucidation Biological activity Apoptosis Nasopharyngealcarcinoma

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基于Rényi-α熵的参数化纠缠度量

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物理学报 2024年第4期73卷 37-46页

作者：戴伟鹏贺衎侯晋川太原理工大学数学学院太原030024

与各种非参数化纠缠度量相比,参数化纠缠度量显示了其优越性.并发纠缠被广泛用于描述量子实验中的纠缠.作为一种纠缠度量,它与特定Rényi-α熵有关.本文提出了一种基于Rényi-α熵的参数化两体纠缠度量,命名为α-对数并发纠缠.与现有的... 详细信息

与各种非参数化纠缠度量相比,参数化纠缠度量显示了其优越性.并发纠缠被广泛用于描述量子实验中的纠缠.作为一种纠缠度量,它与特定Rényi-α熵有关.本文提出了一种基于Rényi-α熵的参数化两体纠缠度量,命名为α-对数并发纠缠.与现有的参数化度量不同,首先定义了纯态的度量,然后推广到混合态.进一步验证了α-对数并发纠缠满足纠缠度量3个条件.展示了对纯态的度量是容易计算的,然而对于混合态,解析计算只适用于特殊的双量子位态或特殊的高维混合态.因此,本文致力于建立一般两体态α-对数并发纠缠的一个下界.令人惊讶的是,这个下界是这个混合态的正部分转置判据和重排判据的函数.这表明了3种纠缠度量之间的联系.有趣的是,下界依赖于与具体态相关的熵参数.这样我们可以选择适当的参数α,使得Gα(ρ)≫0用于特定态ρ的实验纠缠检测.此外,计算了isotropic态的α-对数并发纠缠的表达式,并给出了d=2时isotropic态的解析表达式.最后,讨论了α-对数并发纠缠的的单配性.建立了两个量子比特系统中并发纠缠和α-对数并发纠缠之间的函数关系,然后得到了该函数的一些有用性质,并结合Coffman-Kundu-Wootters(CKW)不等式,建立了关于α-对数并发纠缠的单配性不等式.最终证明了单配性不等式对于α-对数并发纠缠是成立的.

关键词：参数化度量 Rényi-α熵纠缠度量并发纠缠

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Integration of serum pharmacochemistry with network pharmacology to reveal the potential mechanism of Yangqing Chenfei formula(养清尘肺方) for the treatment of silicosis

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Journal of Traditional Chinese Medicine 2024年第4期44卷 784-793页

作者： HU Yuanyuan LIU Xinguang ZHAO peng WU Jinyan YAN Xinhua hou Runsu WANG xiangcheng YANG Fan TIAN Xinrong LI Jiansheng Longhua Hospital Shanghai University of Traditional Chinese Medicine Shanghai University of Traditional Chinese MedicineShanghai 200032China Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan and Education Ministry of P.R.China.Zhengzhou 450046China Henan Key Laboratory of Chinese Medicine for Respiratory Disease Henan University of Chinese MedicineZhengzhou 450046China

OBJECTIVE:To explore the mechanisms of Yangqing Chenfei formula(养清尘肺方,YCF)in the treatment of silicosis through a comprehensive strategy consisting of serum pharmacochemistry,network pharmacology analysis,and in vitro ***:An ultrahigh-performance liquid chromatography-tandem mass spectrometry method was used to confirm the active components in YCF-medicated ***,we obtained targets for active components and genes for silicosis from multiple ***,a protein-protein interaction network was constructed,and Kyoto Encyclopedia of Genes and Genomes pathway and biological process analyses were conducted to elucidate the mechanisms of YCF for the treatment of ***,we validated the important components and mechanisms in ***:Altogether,19 active components were identified from rat serum after YCF *** identified 724 targets for 19 components,which were mainly related to inflammation[phosphatidy linositol 3 kinase/protein kinase B,forkhead box O,hypoxia inducible factor,and T-cell receptor signaling pathway,nitric oxide biosynthetic process],fibrotic processes[vascular endothelial growth factor signaling pathway,extracellular signal regulated kinase(ERK)1 and ERK2 cascade,smooth muscle cell proliferation],and apoptosis(negative regulation of apoptotic process).In addition,218 genes for silicosis were identified and were mainly associated with the inflammatory response and immune process[cytokine-cytokine receptor interaction,tumor necrosis factor alpha(TNF-α),toll-like receptor,and nucleotide binding oligomerization domain-like receptor signaling pathway].Taking an intersection of active component targets and silicosis genes,we obtained 61 common genes that were mainly related to the inflammatory response and apoptosis,such as the phosphatidylinositol-3-kinase/protein kinase B signaling pathway,mitogen activated protein kinases signaling pathway,TNF signaling pathway,toll-like receptor signaling pathway,b

关键词： silicosis network treatment

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Immunologic characteristics and predictive risk factors of primary Sjögren’s syndrome complicated with malignant lymphoma:A multicenter case-control study

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Chinese Medical Journal 2024年第10期137卷 1252-1254页

作者： Yuebo Jin Linqing hou Hao Li Liyun Zhang Yuanhong peng Naidi Wang Jing He Department of Rheumatology and Immunology Beijing Key Laboratory for Rheumatism Mechanism and Immune DiagnosisPeking University People’s HospitalBeijing 100044China Department of Rheumatology and Immunology Linfen Third People’s HospitalLinfenShanxi 041000China Department of Rheumatology and Immunology Huabei Petroleum Administration Bureau General HospitalCangzhouHebei 062552China Affiliated Hospital of North Sichuan Medical College NanchongSichuan 637000China

To the Editor:Primary Sjögren’s syndrome(pSS)is a multi-systemic autoimmune disease characterized by the exocrine gland(mainly salivary and lacrimal glands)involvement,leading to xerostomia and xerophthalmia.[1]The course of pSS is relatively slow,but patients with pSS had higher risk of overall cancer,including malignant lymphoma(ML).[2]It is widely known that all-cause mortality rates were not increased in pSS patients as compared with healthy ***,secondary lymphoproliferative disease was an important cause of excess mortality.

关键词： mortality lymphoma malignant

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Widespread incomplete lineage sorting and introgression shaped adaptive radiation in the Gossypium genus

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Plant Communications 2024年第2期5卷 185-197页

作者： Yanchao Xu Yangyang Wei Zhongli Zhou Xiaoyan Cai Scott ABoden Muhammad Jawad Umer Luqman BSafdar Yuling Liu Dingsha Jin Yuqing hou Yuhong Wang Sarah Brooke Wall Kunbo Wang Shuxun Yu Baohong Zhang Renhai peng Fang Liu National Key Laboratory of Cotton Bio-breeding and Integrated Utilization Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyang 455000China College of Plant Science and Technology Huazhong Agricultural UniversityWuhan 40070China College of Biology and Food Engineering Anyang Institute of TechnologyAnyang 455000China National Nanfan Research Institute(Sanya) Chinese Academy of Agricultural SciencesSanya 572024China School of Agriculture Food and WineUniversity of AdelaideAdelaideSA 5005Australia Sanya Institute Hainan Academy of Agricultural SciencesSanya 572000China Department of Biology East Carolina UniversityGreenvilleNC 27858USA School of Agricultural Sciences Zhengzhou UniversityZhengzhou 450001China

Cotton(Gossypium)stands as a crucial economic crop,serving as the primary source of naturalfiber for the textile ***,the evolutionary mechanisms driving speciation within the Gossypium genus remain *** this investigation,we leveraged 25 Gossypium genomes and introduced four novel assem-blies—***,***,***,and ***(Gklo)—to delve into the speciation history of this ***,we encountered intricate phylogenies potentially stemming from *** complexities are further compounded by incomplete lineage sorting(ILS),a factor likely to have been instrumental in shaping the swift diversification of *** focus subsequently shifted to the rapid radiation episode during a concise period in Gossypium *** a recently diverged lineage comprising ***,Gklo,and ***,we constructed afinely detailed ILS ***,this analysis revealed the non-random distribution of ILS regions across the reference Gklo ***,we identified signs of robust natural selection influencing specific ILS *** variations per-taining to speciation emerged between the closely related sister species Gklo and ***-mately 15.74%of speciation structural variation genes and 12.04%of speciation-associated genes were esti-mated to intersect with ILS *** enrich our understanding of the role of ILS in adaptive radiation,shedding fresh light on the intricate speciation history of the Gossypium genus.

关键词： cotton speciation Gossypium genus incomplete lineage sorting ILS phylogenetic analysis gene tree resolution

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Ancient DNA unravels species identification from Laosicheng site,Hunan Province,China,and provides insights into maternal genetic history of East Asian leopards

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Zoological Research 2024年第1期45卷 226-229页

作者： Ming Zhang Cai-Hui Wang Yu-Xin Zheng Qi-Gao Jiangzuo Ye-Mao hou peng Cao Qing-Yan Dai Ruo-Wei Yang Feng Liu Xiao-Tian Feng Lin-Heng Mo Qiao-Mei Fu China-Central Asia"the Belt and Road"Joint Laboratory on Human and Environment Research Key Laboratory of Cultural Heritage Research and ConservationSchool of Culture HeritageNorthwest UniversityXi’anShaanxi 710127China Shanghai Qi Zhi Institute Shanghai 200232China College of Life Sciences Northwest UniversityXi’anShaanxi 710127China Key Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate Paleontology and PaleoanthropologyCenter for Excellence in Life and PaleoenvironmentChinese Academy of SciencesBeijing 100044China Cultural Relics and Archaeology Institute of Hunan ChangshaHunan 410083China University of the Chinese Academy of Sciences Beijing 100049China

DEAR EDITOR,The Laosicheng site in Yongshun County,Hunan Province,China,plays an important role in elucidating the animal population composition of the region prior to the middle Qing Dynasty(approximately 300 years ago).This site has yielded a substantial number of animal bones,11960 of which have been identified to the species level,serving as direct evidence of ancient animal populations(Hunan Provincial Institute of Cultural Relics and Archaeology,2018).

关键词： Hunan Ancient insight

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