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Strong Anisotropic Order Parameters at All-Nitride Ferromagnet/Superconductor Interfaces

Chinese Physics Letters 2024年第2期41卷 102-111页

作者： Qiao Jin Meng Yang Guozhu Song Nan Zhao Shengru Chen Haitao Hong Ting Cui Dongke Rong qianying wang Yiyan Fan Chen Ge Can wang Jiachang Bi Yanwei Cao Liusuo Wu Shanmin wang Kui-Juan Jin Zhi-Gang Cheng Er-Jia Guo Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China Department of Physics&Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Department of Physics Southern University of Science and TechnologyShenzhen 518055China Songshan Lake Materials Laboratory Dongguan 523808China Ningbo Institute of Materials Technology&Engineering Chinese Academy of SciencesNingbo 315201China

Proximity effects between superconductors and ferromagnets(SC/FM)hold paramount importance in comprehending the spin competition transpiring at their *** competition arises from the interplay between Cooper pairs and ferromagnetic exchange *** proximity effects between transition metal nitrides(TMNs)are scarcely investigated due to the formidable challenges of fabricating high-quality SC/FM *** fabricated heterostructures comprising SC titanium nitride(TiN)and FM iron nitride(Fe_(3)N)with precise chemical compositions and atomically well-defined *** magnetoresistance of Fe_(3)N/TiN heterostructures shows a distinct magnetic anisotropy and strongly depends on the external ***,the superconducting transition temperatureT_(C) and critical field of TiN experience notable suppression when proximity to Fe_(3)*** observe the intriguing competition of interfacial spin orientations near𝑇T_(C)(∼1.25 K).These findings not only add a new materials system for investigating the interplay between superconductor and ferromagnets,but also potentially provide a building block for future research endeavors and applications in the realms of superconducting spintronic devices.

关键词： proximity Superconductor titanium

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基于KMV模型的新能源汽车行业信用风险研究

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商业观察 2024年第20期10卷 25-27,31页

作者：刘千王倩影哈尔滨商业大学金融学院黑龙江哈尔滨150028

随着环境问题越来越受到关注,新能源汽车产业逐渐成为全球关注的焦点。我国政府对新能源汽车产业的发展高度重视,对其优化产业结构、促进能源转型、改善环境质量方面具有重要意义。文章拟从信用风险的角度出发,选取我国具有代表性的20... 详细信息

随着环境问题越来越受到关注,新能源汽车产业逐渐成为全球关注的焦点。我国政府对新能源汽车产业的发展高度重视,对其优化产业结构、促进能源转型、改善环境质量方面具有重要意义。文章拟从信用风险的角度出发,选取我国具有代表性的20家新能源汽车上市公司以及近5年的财务数据和股票数据,运用KMV模型对新能源汽车上市企业的信用风险水平进行评估,计算其违约距离。根据实证结果分析新能源汽车行业的信用风险状况,并提出改善风险防控的建议。

关键词：新能源汽车行业信用风险 KMV模型

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从5-羟色胺探讨肠易激综合征与早泄的关系并预测天然药物

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国际中医中药杂志 2024年第1期46卷 84-89页

作者：龚卓之王倩影闫贺刘涛中国中医科学院望京医院脾胃病科北京100102

目的从5-羟色胺(5-HT)探讨肠易激综合征(IBS)与早泄(PE)的关系,并预测具有治疗作用的天然药物。方法检索GeneCards、DisGeNET、TTD、OMIM、DrugBank数据库,筛选IBS、PE相关靶点。将2种疾病靶点与5-HT受体相关靶点取交集,并导入STRING数... 详细信息

目的从5-羟色胺(5-HT)探讨肠易激综合征(IBS)与早泄(PE)的关系,并预测具有治疗作用的天然药物。方法检索GeneCards、DisGeNET、TTD、OMIM、DrugBank数据库,筛选IBS、PE相关靶点。将2种疾病靶点与5-HT受体相关靶点取交集,并导入STRING数据库,构建三者共同靶点PPI网络,运用R语言对共同靶点进行GO功能富集分析,借助Coremine Medical平台预测天然药物。结果IBS、PE与5-HT相关的共同靶点为5-HT1A、5-HT1B、5-HT2A、5-HT2C、5-HT3A。GO功能富集得到基因功能相关信息250个,主要富集于血清素受体信号通路、细胞对多巴胺的反应、对多巴胺的反应等。天然药物预测得到石莲子、莲子、藕节、莲房、荷梗、莲衣、莲须、荷花、荷叶、藕、莲子心、莲子、白果、银杏叶共14种中药。结论5-HT水平异常可影响胃肠动力、射精潜伏时间和龟头敏感性,中枢5-HT水平升高是IBS与PE的共同发病机制。5-HT1A、5-HT3A等受体与5-HT相互作用可调节胃肠道运动和分泌活动、肠道神经系统,降低肠道高敏感;5-HT1A受体敏感度增加可降低射精阈值促使射精,而5-HT2C受体敏感性增加可升高射精阈值。

关键词：肠易激综合征早泄生物信息学 5-羟色胺 5-羟色胺受体

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基于《黄帝内经》“清浊相干”理论探讨脾胃病病机及半夏泻心汤的治疗作用

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中国实验方剂学杂志 2024年第14期30卷 225-231页

作者：张雪萍王倩影钟卓泰姚梦茜陈磊张涛魏玮苏晓兰中国中医科学院望京医院北京100102

基于《黄帝内经》“清浊相干”理论,对脾胃病病机及半夏泻心汤对脾胃病的治疗作用进行探讨。认为“清浊相干”是由于清浊二气混杂,所引起的阴阳逆乱、气机失衡的病理状态,可以用于阐释归纳脾胃病发病机制。基于“清浊相干”理论,可将脾... 详细信息

基于《黄帝内经》“清浊相干”理论,对脾胃病病机及半夏泻心汤对脾胃病的治疗作用进行探讨。认为“清浊相干”是由于清浊二气混杂,所引起的阴阳逆乱、气机失衡的病理状态,可以用于阐释归纳脾胃病发病机制。基于“清浊相干”理论,可将脾胃病病机总结为脾胃气乱、营卫失和及寒热相争。半夏泻心汤是治疗脾胃病的重要方剂,在治法上兼顾辛开苦降、通调营卫、寒热并调,可以通过调节气机升降、兼顾表里阴阳、兼施虚实补泻,从而达到调理脾胃病“清浊相干”病理状态的目的。结合现代研究结果可以发现,半夏泻心汤能够调节胃肠动力、恢复消化系统黏膜免疫屏障功能,并且具有在寒凉药物及温热药物并用的情况下发挥最大治疗效用的特点,与半夏泻心汤在“清浊相干”理论下发所挥的治疗作用相对应。深挖“清浊相干”理论内涵,并基于该理论探讨脾胃病病机及半夏泻心汤的治疗作用,能够进一步挖掘脾胃病与“清浊”理论的内在联系,为脾胃病的临床诊断及治疗提供思路及理论层面的参考。

关键词： “清浊相干” 脾胃病半夏泻心汤《黄帝内经》

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Flexoelectric-induced photovoltaic effects and tunable photocurrents in flexible LaFeO_(3) epitaxial heterostructures

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Journal of Materiomics 2022年第2期8卷 281-287页

作者： Zhizheng Jiang Zhiyu Xu Zhongnan Xi Yihao Yang Ming Wu Yuke Li Xiang Li qianying wang Chen Li Di Wu Zheng Wen College of Physics and Center for Marine Observation and Communications Qingdao UniversityQingdao266071China National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional MaterialsAnd Department of Materials Science and EngineeringNanjing UniversityNanjing210093China State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong UniversityXi'anShannxi710049China

By engineering strain gradients in dielectrics,the flexoelectric effect can be created,which yields interesting physical properties via electromechanical ***,we report flexoelectric-induced photovoltaic effects in centrosymmetric LaFeO_(3) thin-film heterostructures grown on flexible mica sub-strates,in which partial relaxation of lattice-mismatch strain against LaAlO_(3) stretching layers results in giant strain gradients and pronounced electrical *** flexoelectric polarization modulates band alignment and leads to significant photovoltaic effects with a short-circuit current density of~0.4 mA/cm^(2) and an open circuit voltage of~-0.45 V in Pt/LaFeO_(3)/LaNiO_(3) *** addition,by con-cavely/convexly bending the mica substrate,mechanical strain gradients give rise to bi-directionally tunable photocurrents,in which continuously change of short-circuit current density with a magni-tude of~100% and good reproducibility in repetitive bending operations are observed in the Pt/LaFeO_(3)/LaNiO_(3) *** present work demonstrates an approach to design self-powered photoelectric de-vices with an electromechanical degree of freedom based on the flexoelectric effect in flexible thin-film heterostructures.

关键词： Flexoelectric effect Photovoltaic effect Strain gradient Flexible electronics Epitaxial heterostructures

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Highly selective photocatalytic reduction of CO_(2) to CH_(4) on electron-rich Fe species cocatalyst under visible light irradiation

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Carbon Energy 2024年第1期6卷 255-266页

作者： qianying Lin Jiwu Zhao Pu Zhang Shuo wang Ying wang Zizhong Zhang Na Wen Zhengxin Ding Rusheng Yuan Xuxu wang Jinlin Long State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhouChina

Efficient photocatalytic reduction of CO_(2) to high-calorific-value CH4,an ideal target product,is a blueprint for C_(1)industry relevance and carbon neutrality,but it also faces great ***,we demonstrate unprecedented hybrid SiC photocatalysts modified by Fe-based cocatalyst,which are prepared via a facile impregnation-reduction method,featuring an optimized local electronic *** exhibits a superior photocatalytic carbon-based products yield of 30.0μmol g^(−1) h^(−1) and achieves a record CH_(4) selectivity of up to 94.3%,which highlights the effectiveness of electron-rich Fe cocatalyst for boosting photocatalytic performance and ***,the synergistic effects of directional migration of photogenerated electrons and strongπ-back bonding on low-valence Fe effectively strengthen the adsorption and activation of reactants and intermediates in the CO_(2)→CH_(4) *** study inspires an effective strategy for enhancing the multielectron reduction capacity of semiconductor photocatalysts with low-cost Fe instead of noble metals as cocatalysts.

关键词： artificial synthesis of CH_(4) electronic structure optimization Fe species cocatalyst photocatalytic CO_(2) reduction SiC

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清热化湿调枢方对葡聚糖硫酸钠结肠炎模型小鼠肠黏膜MUC-2、Claudin-2表达的影响

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环球中医药 2024年第4期17卷 572-577页

作者：王倩影杨晨钟卓泰张涛姚梦茜王琳张格知班彦然苏晓兰魏玮中国中医科学院望京医院脾胃病科北京100102 北京市密云中医医院脾胃科北京中医药大学研究生院

目的本研究基于粘蛋白2(mucoprotein-2,MUC-2)和闭合蛋白2(Claudin-2)的表达变化,探讨了在预防和缓解小鼠肠黏膜损伤的DSS结肠炎模型中,清热化湿调枢方可能发生的机理。方法 24只C57BL/6小鼠随机抽取6只小鼠为正常组,其余18只小鼠均给... 详细信息

目的本研究基于粘蛋白2(mucoprotein-2,MUC-2)和闭合蛋白2(Claudin-2)的表达变化,探讨了在预防和缓解小鼠肠黏膜损伤的DSS结肠炎模型中,清热化湿调枢方可能发生的机理。方法 24只C57BL/6小鼠随机抽取6只小鼠为正常组,其余18只小鼠均给予2.5%葡聚糖硫酸钠(dextran sodium sulfate, DSS)水溶液自由饮用7天以制成每组6只的DSS结肠炎小鼠模型,然后再将其随机分为模型组,美沙拉嗪组,清热化湿调枢方组。对正常组、模型组的小鼠,每组用0.5 mL的纯净水进行灌胃;美沙拉嗪组的小鼠给美沙拉嗪混悬液灌胃,剂量为0.52 g/(kg·d);清热化湿调枢方组的小鼠给予1.69 g/(kg·d)的清热化湿调枢方中药颗粒剂灌胃;每组每天1次,共7天,与模型同步进行。7天后测定各组小鼠体质量,记录小鼠体质量变化,评分疾病活动指数(disease activity index, DAI),记录各组小鼠结肠长度,观察结肠组织病理变化,检测MUC-2和Claudin-2在结肠组织中的表达。结果模型组的小鼠体质量较正常组显著下降,DAI评分显著上升,结肠长度变短,结肠组织中Claudin-2和MUC-2蛋白的表达明显下降(P<0.05)。与模型组相比,美沙拉嗪组和清热化湿调枢方组的小鼠体质量显著增加,DAI评分下降,结肠长度增加,Claudin-2、MUC-2蛋白在结肠组织中的表达均有明显提高(P<0.05)。从结肠组织的病理变化来看,模型组小鼠肠黏膜上皮可见明显缺损,杯状细胞减少,固有层和隐窝结构破坏严重,排列错乱,淋巴细胞浸润较多;清热化湿调枢方组和美沙拉嗪组小鼠结肠黏膜上皮近乎完整,炎性细胞少量浸润。结论清热化湿调枢方对DSS结肠炎小鼠肠道黏膜屏障损伤具有一定防治作用,其机制可能是通过提高结肠组织MUC-2表达,刺激Claudin-2分泌促进黏膜修复,从而维持肠黏膜屏障的稳态。

关键词：溃疡性结肠炎清热化湿调枢方粘蛋白2 闭合蛋白2 肠黏膜屏障

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魏玮基于“脑肠同调”治疗胃食管反流病经验

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北京中医药 2024年第5期43卷 495-498页

作者：王倩影苏晓兰龚卓之张涛钟卓泰姚梦茜班彦然王琳魏玮中国中医科学院望京医院脾胃病科北京100102

胃食管反流病是以脑肠互动异常为特征的消化系统难治性疾病。其发病机制为肝胆疏泄之枢(情志-脑)、脾胃升降之枢(消化-肠)失调,临床表现有反酸、烧心等消化系统(肠)症状,和焦虑、抑郁等精神心理(脑)症状。魏玮教授创新提出“脑肠同调”... 详细信息

胃食管反流病是以脑肠互动异常为特征的消化系统难治性疾病。其发病机制为肝胆疏泄之枢(情志-脑)、脾胃升降之枢(消化-肠)失调,临床表现有反酸、烧心等消化系统(肠)症状,和焦虑、抑郁等精神心理(脑)症状。魏玮教授创新提出“脑肠同调”理论,并结合本病发病机制及临床表现,灵活运用辛开苦降调枢、疏肝解郁调枢、敛阳安神调枢法及情志疗法,同步改善“脑”“肠”症状,以达脑肠同调共治目的。

关键词：胃食管反流病脑肠同调脑肠互动异常

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Flexible 2 × 2 multiple access visible light communication system based on an integrated parallel GaN/InGaN micro-photodetector array module

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Photonics Research 2024年第4期12卷 793-803页

作者： ZENGYI XU XIANHAO LIN ZHITENG LUO qianying LIN JIANLI ZHANG GUANGXU wang XIAOLAN wang FENGYI JIANG ZIWEI LI JIANYANG SHI JUNWEN ZHANG CHAO SHEN NAN CHI Key Laboratory for Information Science of Electromagnetic Waves(MoE) Department of Communication Science and EngineeringFudan UniversityShanghai 200433China National Institute of LED on Silicon Substrate Nanchang UniversityNanchang 330096China

In recent studies, visible light communication(VLC) has been predicted to be a prospective technique in the future 6G communication systems. To suit the trend of exponentially growing connectivity, researchers have intensively studied techniques that enable multiple access(MA) in VLC systems, such as the MIMO system based on LED devices to support potential applications in the Internet of Things(IoT) or edge computing in the nextgeneration access network. However, their transmission rate is limited due to the intrinsic bandwidth of ***, the majority of visible light laser communication (VLLC) research with beyond 10 Gb/s data rates concentrates on point-to-point links, or using discrete photodetector(PD) devices instead of an integrated array PD. In this paper, we demonstrated an integrated PD array device fabricated with a Si-substrated GaN/InGaN multiple-quantum-well(MQW) structure, which has a 4 × 4 array of 50 μm × 50 μm micro-PD units with a common cathode and anode. This single-integrated array successfully provides access for two different transmitters simultaneously in the experiment, implementing a 2 × 2 MIMO-VLLC link at 405 nm. The highest data rate achieved is 13.2 Gb/s, and the corresponding net data rate(NDR) achieved is 12.27 Gb/s after deducing the FEC overhead, using 2.2 GHz bandwidth and superposed PAM signals. Furthermore, we assess the Huffman-coded coding scheme, which brings a fine-grain adjustment in access capacity and enhances the overall data throughput when the user signal power varies drastically due to distance, weather, or other challenges in the channel condition. As far as we know, this is the first demonstration of multiple visible light laser source access based on a single integrated GaN/InGaN receiver module.

关键词： communication visible light

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Communication efficiency optimization of federated learning for computing and network convergence of 6G networks

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Frontiers of Information Technology & Electronic Engineering 2024年第5期25卷 713-727页

作者： Yizhuo CAI Bo LEI qianying ZHAO Jing PENG Min WEI Yushun ZHANG Xing ZHANG Wireless Signal Processing and Network Laboratory Beijing University of Posts and TelecommunicationsBeijing 100876China Research Institute of China Telecom Co. Ltd.Beijing 102209China Beijing Telecom Beijing 100011China

Federated learning effectively addresses issues such as data privacy by collaborating across participating devices to train global ***,factors such as network topology and computing power of devices can affect its training or communication process in complex network *** and network convergence(CNC)of sixth-generation(6G)networks,a new network architecture and paradigm with computing-measurable,perceptible,distributable,dispatchable,and manageable capabilities,can effectively support federated learning training and improve its communication *** guiding the participating devices'training in federated learning based on business requirements,resource load,network conditions,and computing power of devices,CNC can reach this *** this paper,to improve the communication eficiency of federated learning in complex networks,we study the communication eficiency optimization methods of federated learning for CNC of 6G networks that give decisions on the training process for different network conditions and computing power of participating *** simulations address two architectures that exist for devices in federated learning and arrange devices to participate in training based on arithmetic power while achieving optimization of communication efficiency in the process of transferring model *** results show that the methods we proposed can cope well with complex network situations,effectively balance the delay distribution of participating devices for local training,improve the communication eficiency during the transfer of model parameters,and improve the resource utilization in the network.

关键词： Computing and network convergence Communication efficiency Federated learning Two architectures

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