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基于淋巴管活体可视化技术探索“脾主为胃行其津液”的生理功能实质

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中华中医药杂志 2024年第7期39卷 3646-3649页

作者：刘明宇潘菽弢侯鉴宸刘嘉琦李嘉勇袁钰轩陈萌北京中医药大学第三临床医学院北京100029 北京中医药大学中医学院北京100029 北京中医药大学中药学院北京102488

目的:观测干姜对大鼠胃部淋巴管泵流功能的调节作用,探讨“脾主为胃行其津液”的生理功能实质。方法:雄性SD大鼠随机分为中药高、中、低剂量组和空白对照组。运用显微录像示踪术,观测大鼠在灌胃相应剂量的干姜药液和0.9%氯化钠溶液后胃... 详细信息

目的:观测干姜对大鼠胃部淋巴管泵流功能的调节作用,探讨“脾主为胃行其津液”的生理功能实质。方法:雄性SD大鼠随机分为中药高、中、低剂量组和空白对照组。运用显微录像示踪术,观测大鼠在灌胃相应剂量的干姜药液和0.9%氯化钠溶液后胃淋巴管分布及收缩情况,得到其胃淋巴管动力学参数,并通过甲酰胺法测定相关淋巴结的伊文思蓝淋巴转运指数,评价淋巴管泵流功能。结果:与空白对照组比较,3个剂量干姜组显著提高大鼠活体胃部淋巴管的收缩频率、收缩性指数和总收缩分数(P<0.05),降低伊文思蓝淋巴转运指数(P<0.05),且其效果随药液浓度升高呈现先强后弱的变化,而非简单的线性增长。结论:干姜对大鼠胃部淋巴管的收缩功能具有显著促进作用,且该功效可能存在最佳浓度范围,提示胃部淋巴管泵流可能在“脾主为胃行其津液”中发挥重要作用.

关键词：淋巴管可视化脾主为胃行其津液化饮干姜淋巴管活体可视化技术

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基于光电效应的高功率化学原电池研究

科学技术创新 2022年第1期 9-12页

作者：刘梓博王晓玲尹克勤袁宇轩北京信息科技大学仪器与光电工程学院北京100192

随着能源问题的供需矛盾逐渐展露,提高化学原电池转化效率成为有待解决的重要问题。探讨了光电效应对化学电池的影响,利用光电效应能够使金属发生电子逸出,化学原电池当中存在金属极棒,用适当频率的光照射阴极金属,使电子发生光电效应逸... 详细信息

随着能源问题的供需矛盾逐渐展露,提高化学原电池转化效率成为有待解决的重要问题。探讨了光电效应对化学电池的影响,利用光电效应能够使金属发生电子逸出,化学原电池当中存在金属极棒,用适当频率的光照射阴极金属,使电子发生光电效应逸出,加大电路中定向移动电子量,使电流增强,提高化学原电池转化效率。通过类比法将化学电池中最常见的铅酸电池替换为安全环保的铜锌原电池来设计实验,利用锌对应截止频率光照射锌板使电子逸出,形成电流;将光电管内装置附加于实验装置中,达到收集电子并使电子定向移动的目的。设计了两种设计方案,对可能的结果以及实验过程中的工程问题进行了讨论,为今后进一步的实验研究提供了可能性。

关键词：跨学科结合化学原电池光电效应高功率化学原电池光电管

Clustering-triggered phosphorescence of nonconventional luminophores

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Science China Chemistry 2023年第2期66卷 367-387页

作者： Tianjia Yang yuxuan Li Zihao Zhao Wang Zhang yuan School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Key Lab of Electrical Insulation and Thermal AgingShanghai Electrochemical Energy Devices Research CenterShanghai Jiao Tong UniversityShanghai200240China

Nonconventional luminophores have attracted significant attention for their unique photophysical properties and potential applications in different *** classic luminogens consisting of remarkably conjugated segments,nonconventional luminophores generally possess merely nonconjugated or short-conjugated structures based on electron-rich ***,phosphorescence,and even color tunable room temperature phosphorescence(RTP)could be readily obtained from these unique ***,we summarized recent advances in the phosphorescence of nonconventional luminophores,with focus on RTP and color tunable *** clustering-triggered emission(CTE)mechanism could be applied to explain the luminescence as clustering-triggered phosphorescence(CTP).Furthermore,strategies toward the RTP regulation are summarized,and corresponding applications are demonstrated.

关键词： nonconventional luminophore clustering-triggered emission room temperature phosphorescence clustering-triggered phosphorescence color tunable phosphorescence

Transient spectral and dynamic properties of magic-size Cd_(3)P_(2) nanoclusters in the limit of strong confinement

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Science China Chemistry 2023年第12期66卷 3628-3635页

作者： yuan Liu yuxuan Li Yupeng Yang Jingyi Zhu Kaifeng Wu Department of Chemical Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Beijing 100049China

Both semiconductor nanocrystals and organic molecules are important photofunctional materials for an array of *** is interesting to examine the intermediate regime between these two families,which can be interpreted as the strong-confinement limit of the nanocrystals or alternatively as the large-size limit of ***,we choose Cd_(3)P_(2) magic-size clusters(MSCs)as a unique platform and apply time-resolved spectroscopy to investigate their spectral and dynamic *** find that these small clusters display molecular-like vibronic progression on their absorption and emission spectra and a large Stokes shift,which leads to well-separated transient absorption bleach and stimulated emission signals distinct from typical *** the other hand,such small size MSCs can still accommodate biexciton states,and the strongly enhanced Coulombic interactions lead to very fast dephasing of the biexciton resonance as well as rapid biexciton Auger annihilation(1.5 ps).Further,temperature-dependent measurements provide evidence for the transformation of band-edge excitons to localized excitons,with the localization likely driven by the softened lattice in these small-size *** collective results demonstrate that strongly-confined nanoclusters indeed bridge the gap between nanocrystals and molecules,and can be a unique library to search for exotic excited state properties.

关键词： time-resolved spectroscopy magic-size clusters quantum confinement excited-state dynamics

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海洋装备防腐用镁合金牺牲阳极的研究进展

现代交通与冶金材料 2022年第1期2卷 61-70页

作者：刘明耀江静华高正袁钰轩马爱斌河海大学力学与材料学院江苏南京211100 江苏吕泰合金有限公司江苏丹阳212351

采用牺牲阳极进行大型金属结构的腐蚀防护具有易维护、无需外加电源等诸多优点,现代蓝色经济的发展促进了镁合金阳极在海洋装备防腐中的应用。综述了牺牲阳极的防腐原理及其海洋防腐应用时的性能要求;继而分析了典型镁合金阳极材料的化... 详细信息

采用牺牲阳极进行大型金属结构的腐蚀防护具有易维护、无需外加电源等诸多优点,现代蓝色经济的发展促进了镁合金阳极在海洋装备防腐中的应用。综述了牺牲阳极的防腐原理及其海洋防腐应用时的性能要求;继而分析了典型镁合金阳极材料的化学组成、性能特点及海洋环境中服役行为的影响因素;探讨了改善镁合金牺牲阳极的途径、新型牺牲阳极材料的发展和应用前景,旨在为海洋装备高效防腐用牺牲阳极材料的开发提供参考。

关键词：防腐镁合金牺牲阳极海洋装备发展现状

Risk assessment of large-scale winter sports sites in the context of a natural disaster

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Journal of Safety Science and Resilience 2022年第3期3卷 263-276页

作者： Jiansong Wu yuxuan Xing Yiping Bai Xiaofeng Hu Shuaiqi yuan School of Emergency Management and Safety Engineering China University of Mining and TechnologyBeijing 100083China School of Information Technology People’s Public Security University of ChinaBeijing 100038China Safety and Security Science Section Faculty of TechnologyPolicy and ManagementTU DelftDelft2628 BXthe Netherlands

Accidents induced by natural disasters at sports sites may cause catastrophic loss of great ***,previous studies on risk assessments of sports sites have only focused on operational risk and equipment *** the frequent occurrence of extreme disasters,the risk of domino chains caused by natural disasters at large-scale events,such as large-scale winter sports sites,cannot be *** this study,a natural disaster-induced accident-chain evolution analysis model(NAEA model)is *** on the results of the NAEA model,a fuzzy Bayesian network for domino accidents triggered by an earthquake at large-scale winter sports sites was *** sensitivity analysis and scenario analysis,it was found that fire and explosion accidents and crowded stampede accidents are the main causes of serious loss in domino disaster chains in large-scale sports ***,improving the early warning capability,reliability of electrical equipment,and automatic sprinkler systems are the most effective ways to prevent and control major *** addition,an optimal safety strategy improvement analysis was performed to facilitate the decision-making of safety managers to prevent serious accidents and reduce accident loss.

关键词： Risk assessment Domino disaster chain Large-scale sports sites Bayesian network Natural disaster Fuzzy logic

Unravelling the anisotropic light-matter interaction in strainengineered trihalide MoCl_(3)

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Nano Research 2024年第4期17卷 2981-2987页

作者： yuxuan Sun Ziang Liu Zeya Li Feng Qin Junwei Huang Caiyu Qiu Hongtao yuan National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied Sciencesand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210000China

Layered trihalides exhibit distinctive band structures and physical properties due to the sixfold coordinated 3d or 4d transition metal site and partially occupied d orbitals,holding great potential in condensed matter physics and advanced electronic *** research focused on trihalides with highly symmetric honeycomb-like structures,such as CrI3 andα-RuCl_(3),while the role of crystal anisotropy in trihalides remains *** particular,the trihalide MoCl_(3) manifests strong in-plane crystal anisotropy with the largest difference in Mo–Mo interatomic *** on such material is imperative to address the lack of investigations on the effect of anisotropy on the properties of ***,we demonstrated the anisotropy of MoCl_(3) through polarized Raman spectroscopy and further tuned the phonon frequency via strain *** showed the Raman intensity exhibits twofold symmetry under parallel configuration and fourfold symmetry under perpendicular configuration with changing the polarization angle of incident ***,we found that the phonon frequencies of MoCl_(3) decrease gradually and linearly with applying uniaxial tensile strain along the axis of symmetry in the MoCl_(3) crystal,while those frequencies increase with uniaxial tensile strain applied *** results shed light on the manipulation of anisotropic light-matter interactions via strain engineering,and lay a foundation for further exploration of the anisotropy of trihalides and the modulation of their electronic,optical,and magnetic properties.

关键词： layered trihalide MoCl_(3) polarized Raman spectroscopy strain engineering anisotropy

A deep learning-based global tropical cyclogenesis prediction model and its interpretability analysis

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Science China Earth Sciences 2024年第12期67卷 3671-3695页

作者： Bin MU Xin WANG Shijin yuan yuxuan CHEN Guansong WANG Bo QIN Guanbo ZHOU School of Software Engineering Tongji UniversityShanghai 201804China Department of Atmospheric and Oceanic Sciences&Institute of Atmospheric Sciences Fudan UniversityShanghai 200438China National Meteorological Center Beijing 100081China Shanghai Typhoon Institute China Meteorological AdministrationShanghai 200030China

Tropical cloud clusters(TCCs)can potentially develop into tropical cyclones(TCs),leading to significant casualties and economic *** prediction of tropical cyclogenesis(TCG)is crucial for early *** traditional deep learning methods applied to TCG prediction rely on predictors from a single time point,neglect the ocean-atmosphere interactions,and exhibit low model *** study proposes the Tropical Cyclogenesis Prediction-Net(TCGP-Net)based on the Swin Transformer,which leverages convolutional operations and attention mechanisms to encode spatiotemporal features and capture the temporal evolution of *** model incorporates the coupled ocean-atmosphere interactions,including multiple variables such as sea surface ***,causal inference and integrated gradients are employed to validate the effectiveness of the predictors and provide an interpretability analysis of the model's decision-making *** model is trained using GridSat satellite data and ERA5 reanalysis *** results demonstrate that TCGP-Net achieves high accuracy and stability,with a detection rate of 97.9%and a false alarm rate of 2.2%for predicting TCG 24 hours in advance,significantly outperforming existing *** indicates that TCGP-Net is a reliable tool for tropical cyclogenesis prediction.

关键词： Tropical cyclogenesis prediction Deep learning Feature fusion Interpretability Causal inference

Landau–Zener–Stückelberg Interference in Nonlinear Regime

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Chinese Physics Letters 2019年第12期36卷 36-39页

作者： Tong Wu yuxuan Zhou yuan Xu Song Liu Jian Li Department of Physics Harbin Institute of TechnologyHarbin 150001 Institute for Quantum Science and Engineering and Department of Physics Southern University of Science and TechnologyShenzhen 518055 Shenzhen Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055 Center for Quantum Computing Peng Cheng LaboratoryShenzhen 518055

Landau-Zener-Stückelberg(LZS)interference has drawn renewed attention to quantum information processing research because it is not only an effective tool for characterizing two-level quantum systems but also a powerful approach to manipulate quantum *** quantum circuits,due to their versatile tunability and degrees of control,are ideal platforms for studying LZS interference *** use a superconducting Xmon qubit to study LZS interference by parametrically modulating the qubit transition frequency *** dc flux biasing of the qubit slightly far away from the optimal flux point,the qubit excited state population shows an interference pattern that is very similar to the standard LZS interference in linear regime,except that all bands shift towards lower frequencies when increasing the rf modulation *** dc flux biasing close to the optimal flux point,the negative sidebands and the positive sidebands behave differently,resulting in an asymmetric interference *** experimental results are also in good agreement with our analytical and numerical simulations.

关键词： bands quantum Landau