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The effects of Shen song yang Xin Jiao Nang on heart rate turbulence and heart rate variation in patients with chronic heart failure

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The effects of Shen Song Yang Xin Jiao Nang on heart rate tu...

基于多尺度融合金字塔焦点网络的接触网零部件检测

中华医学会心电生理和起搏分会第十次全国学术年会

作者： Zhen yang,Shaobin Jia,Xuezhong Wang,Yong Sha,Zhijun Liu,Weina Guo Heart Center,the General Hospital of Ningxia Medical University 750000

Objective To study the antiarrhythmic effects of Shen song yang Xin Jiao Nang,atraditional Chinese medicine,as detected by heart rate variation(HRV) and heart rate turbulence(HRT),in patients with chronic heart failure(CHF). Methods Sixty-six CHF patients,with the inclusion criterion of aged>18 years old and let ventricular ejection fraction(LVEF)song yang Xin Jiao Nang daily in three divided doses in addition to standard medicine therapy,or the control group(n=34),which were treated only with standard medicine therapy without Shen song yang Xin Jiao *** mean time of follow-up was 3 *** and after three months of treatment,continuous ECG monitoring,echocardiography,HRT and HRV were calculated,and clinical end points including all cause mortality,ventricular tachyc-ardia ventricular fibrillation,were recorded. Results After treatment,HR and TO significantly decreased in both groups(P0.05). Aftertreatment,there were statistically significant difference in the changes of HR,TO,TS,sNN50 total, pNN50,SDNN,SDNNI,SDANN,LF,HF between two groups(P0.05).The occurrence rates of ventricular tachycardia and proxysmal atrial fibrillation in study group were significantly lower than those in control group(Psong yang Xin Jiao Nang can improve the impaired HRT in patients with CHF, which might be one of its anti-arrhythmic mechanisms.

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工程科学学报 2025年第2期47卷 315-327页

作者：朱新宇崔浩锐宋洋中国民用航空飞行学院航空电子电气学院西南交通大学利兹学院

作为高铁牵引供电系统的重要组成部分，接触网系统承担着向动车组传输电能的重要功能.实际工程运营表明，受弓网交互产生的持续冲击以及外部环境的影响，接触网支撑部件可能会出现“松、脱、断、裂”等缺陷，导致接触网结构可靠性下降... 详细信息

作为高铁牵引供电系统的重要组成部分，接触网系统承担着向动车组传输电能的重要功能.实际工程运营表明，受弓网交互产生的持续冲击以及外部环境的影响，接触网支撑部件可能会出现“松、脱、断、裂”等缺陷，导致接触网结构可靠性下降，严重影响接触网系统稳定运行.因此，及时精确定位接触网支撑部件（CSCs），对保障高铁安全运行和完善接触网检修维护策略具有重大意义.然而，CSCs的检测通常面临着零部件种类多、尺度差异大、部分零部件微小的问题.针对以上问题，本文提出一种基于多尺度融合金字塔焦点网络的接触网零部件检测算法，将平衡模块和特征金字塔模块相结合，提高对小目标的检测性能.首先，设计了可分离残差金字塔聚合模块（SRPAM），用于优化模型多尺度特征提取能力、扩大感受野，缓解CSCs检测的多尺度问题；其次，设计了一种基于平衡特征金字塔的路径聚合网络（PA-BFPN）,用于提升跨层特征融合效率和小目标检测性能.最后，通过对比试验、可视化实验和消融实验证明了所提方法的有效性和优越性.其中，所提的MFPFCOS在CSCs数据集上的检测精度（mAP）能够在达到48.6%的同时，实现30的FLOPs (Floating point operations per second)，表明所提方法能够在检测精度和检测速度之间保持良好的平衡.

关键词：深度学习目标检测接触网支撑组件(CSCs) 路径聚合特征金字塔(PA-FPN) 空洞空间卷积池化金字塔(ASPP)

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De novo synthesis of atropisomeric benzofurans via Cu/SPDO complex catalyzed asymmetric formal [3 + 2] annulation

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Science China Chemistry 2025年第01期 174-180页

作者： Fan-Xiao Meng Xing-Yu Wang Ka Lu Ju-song yang Fu-Min Zhang Ai-Jun Ma Bao Du Yong-Qiang Tu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University School of Chemistry and Chemical Engineering Shanghai Jiao Tong University School of Biotechnology and Health Sciences Wuyi University

Herein, the de novo synthesis of atropisomeric benzofurans through the Cu/spirocyclic-pyrrolidine-oxazoline(SPDO) complex catalyze asymmetric formal [3 + 2] cycloaddition between quinones and ynamides is explored, producing a range of structurally diverse axially chiral benzofurans in satisfactory yields with good to excellent enantioselectivities. Furthermore, density functional theory calculations were applied to explain the possible reaction mechanism.

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马铃薯转录因子StFBH3对非生物逆境胁迫的响应分析

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作物学报 2025年第1期51卷 247-259页

作者：宋倩娜宋慧洋李京昊段永红梅超冯瑞云山西农业大学农学院山西太谷030801 山西省农业科学院作物科学研究所山西太原030031

bHLH (basic helix-loop-helix)作为植物界第二大类转录因子,在植物应对环境胁迫响应中起着重要的调控作用。探究马铃薯(Solanum tuberosum L.) bHLH家族基因功能将为马铃薯改良和育种提供一定的理论依据。本研究克隆了马铃薯StFBH3基因... 详细信息

bHLH (basic helix-loop-helix)作为植物界第二大类转录因子,在植物应对环境胁迫响应中起着重要的调控作用。探究马铃薯(Solanum tuberosum L.) bHLH家族基因功能将为马铃薯改良和育种提供一定的理论依据。本研究克隆了马铃薯StFBH3基因(Gene ID:102582309),利用qPCR技术分析了不同逆境胁迫下StFBH3基因表达模式,结果表明, StFBH3基因在马铃薯根和叶中的表达量较高,且该基因的表达受渗透、高盐和脱落酸(abscisic acid, ABA)诱导;以过表达StFBH3基因的马铃薯试管苗为材料,在分别含有不同浓度甘露醇(mannitol)、NaCl和ABA的MS培养基中,过表达StFBH3马铃薯株系的叶绿素含量显著高于野生型,根长显著长于野生型。在干旱和高盐处理下,土壤栽培的过表达马铃薯株系较野生型表现较强的耐受性,叶片相对含水量、叶绿素含量和过氧化物歧化酶(SOD)活性显著高于野生型。qPCR分析发现,干旱和盐胁迫处理下相关基因(KAT1)的表达量在过表达马铃薯株系中较野生型显著降低。以上结果表明, StFBH3基因可能在马铃薯对渗透、干旱和高盐等胁迫响应中起正向调控作用。本研究也为StFBH3基因在马铃薯中的生物学功能深入理解提供一定的参考依据。

关键词：马铃薯 StFBH3 转录因子逆境胁迫

Relationships between Springtime Sea Surface Temperatures in Different Indian Ocean Domains and Various Asian Monsoons from Late Spring to the Following Summer

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Journal of Meteorological Research 2023年第3期37卷 307-323页

作者： Kangtai CHEN song yang School of Atmospheric Sciences Sun Yat-sen UniversitySouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082 Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies Sun Yat-sen UniversityZhuhai 519082

We investigate the relative importance of spring sea surface temperatures(SSTs)in different Indian Ocean(IO)domains,especially the northern and southern IO,for the development and intensity of the Asian summer *** performing unsupervised neural network analysis,the self-organizing map,we extract distinct patterns of springtime IO *** results show that the uniform warming(cooling)of the southern IO plays a crucial role in the warming(cooling)of both the basin-wide IO and tropical *** southern IO thus well represents the associations of basinwide IO and tropical IO with the Asian summer monsoon,and is instrumental in the relationship between the IO and summer monsoon.A warming in the southern IO is closely related to the weakening of large-scale meridional monsoon circulation in May and summer(June–August),including suppression of the South Asian monsoon development in May and the East Asian monsoon in *** the other hand,a warming in the northern IO appears to be associated with an earlier South Asian monsoon onset and a stronger East Asian *** summer,the connection of the springtime IO SST with the South Asian monsoon weakens,but that with the East Asian monsoon ***,a robust negative correlation is found between the warming of various IO domains and the development and intensity of the Southeast Asian monsoon.

关键词： self-organizing map Indian Ocean sea surface temperature development and intensity of the Asian summer monsoon

新质生产力背景下河北省旅游经济高质量发展研究

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国土与自然资源研究 2025年第1期 85-91页

作者：梁永国宋杨河北农业大学海洋学院河北秦皇岛066003 北京第二外国语学院旅游科学学院北京100024

在新质生产力背景下,以高质量发展理念,从创新、协调、绿色、开放、共享5个维度构建指标体系,运用TOPSIS模型和耦合协调度模型对2012-2020年河北省旅游经济高质量发展水平进行评价分析。研究结果显示,河北省旅游经济高质量发展达到中级... 详细信息

在新质生产力背景下,以高质量发展理念,从创新、协调、绿色、开放、共享5个维度构建指标体系,运用TOPSIS模型和耦合协调度模型对2012-2020年河北省旅游经济高质量发展水平进行评价分析。研究结果显示,河北省旅游经济高质量发展达到中级水平,总体上呈现良性向好发展态势,旅游经济各子系统耦合协调度接近中级水平,随着旅游规模的增长,旅游业内在素质和结构性矛盾依然比较突出,目前影响旅游经济高质量发展的阻碍因素主要在共享、协调和绿色子系统。今后旅游经济高质量发展的重点是调整旅游结构、提升旅游业内在素质和改善生态环境。

关键词：旅游经济高质量发展 TOPSIS模型耦合协调度模型

Synthesis and Characterization of Cobalt-Carbon Core-Shell Microspheres in Supercritical Carbon Dioxide System

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Chinese Journal of Chemical Physics 2008年第1期21卷 76-80页

作者： Jun-song yang Qian-wang Chen Hefei National Laboratory for Physical Sciences at Microscale Department of Materiab Science andEngineering Department of Chemisto4 University of Science and Technology of China Hefei 230025China

The synthesis of cobalt-carbon core-shell microspheres in supercritical carbon dioxide system was investi- gated. Cobalt-carbon core-shell microspheres with diameter of about 1μm were prepared at 350 ℃ for 12 h in a closed vessel containing an appropriate amount of bis（cyclopentadienyl）cobalt powder and dry ice. Characterization by a variety of techniques, including X-ray powder diffraction, X-ray photoelectron spectroscopy, TransmissiOn electron microscope, Fourier transform infrared spectrum and Raman spectroscopy analysis reveals that each cobalt-carbon core-shell microsphere is made up of an amorphous cobalt core with diameter less than 1 μm and an amorphous carbon shell with thickness of about 200 nm. The possible growth mechanism of cobalt-carbon core-shell microspheres is discussed, based on the pyrolysis of bis（cyclopentadienyl）cobalt in supercritical carbon dioxide and the deposition of carbon or carbon clusters with odd electrons on the surface of magnetic cobalt cores due to magnetic attraction. Magnetic measurements show 141.41 emu/g of saturation magnetization of a typical sample, which is lower than the 168 emu/g of the corresponding metal cobalt bulk material. This is attributed to the considerable mass of the carbon shell and amorphous nature of the magnetic core. Control of magnetism in the cobalt-carbon core-shell microspheres was achieved by annealing treatments.

关键词： Cobalt-carbon core-shell microspheres Supercritical carbon dioxide system

Reliability evaluation of avionics system with imperfect fault coverage and propagated failure mechanisms

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Chinese Journal of Aeronautics 2020年第12期33卷 3437-3446页

作者： Ying CHEN song yang Rui KANG Science and Technology on Reliability and Environmental Engineering Laboratory Beihang UniversityBeijing 100083China

Fault tolerance designs are essential techniques for systems that require high levels of reliability,such as aircraft or spacecraft control *** Fault Coverage(IFC)may lead to the failure of a system or subsystem even with adequate *** studies of IFC mostly concentrated on evaluating Coverage Factor(CF),whereas the system failure behaviors with IFC have rarely been *** that occur in low-layer may be covered by ***,if the coverage is imperfect,uncovered failure will have functional and physical impact on the system *** this thesis,the failure behavior and reliability of IFC of multi-layer systems are studied and a Binary Decision Diagram(BDD)-based modeling and simulation method are proposed to evaluate system *** a case,the failure behavior of an aero engine electronic controller with IFC is *** results show that the IFC may impact system behavior without taking the IFC into account,the system maintenance intervals may reduce,and thus the maintenance costs will increase.

关键词： Acceleration Binary Decision Diagram(BDD) Failure mechanism Imperfect Fault Coverage Multi-layer system Reliability evaluation

Design and parameter optimization of flexible comb-type grass seed metering device

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International Journal of Agricultural and Biological Engineering 2015年第1期8卷 9-16页

作者： yang song Zhang Shumin College of Engineering Nanjing Agricultural UniversityNanjing 210031China College of Engineering China Agricultural UniversityBeijing 100083China

In order to optimize the structure schema of flexible comb-type grass seeder,the effects of combing teeth gap L,rotation speed of comb shaft N,seed metering device inclining angle α and groove strip inclining angle θ on the rate and uniformity of seeding were observed by test and analyzed,then the coefficient of seeding stability variation was explored in the simulating planting environment on the soil tank test bed based on the above four influencing factors,with Festuca arundinacea seeds as *** to the results of regression analysis,the model fits well with the actual situation.L,N,α,and the interaction term of N and θ are significant,and the interaction term of θ and α is extremely *** analysis of interaction factor effect shows that the variation coefficient responds to the interaction of N and θ in the same manner as that responds to the interaction of θ and α,showing ‘saddle’ variation *** the acceptable maximum value of coefficient of seeding uniformity variation is 4%,then the inverse proportion relationship between factors is inferred according to the change trend of the above interaction factors and derivation of regression *** the regression equation was simplified according to the inverse proportion equation,and four groups of parameters were *** parameter group was tested,and the test results agreed with the regression equation's predicting value,with the correlation coefficient *** research can provide reference for the development of seed metering devices and grass seeders.

关键词： grass seeder structural design parameter optimization agricultural machinery flexible structures