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弹性体 2002年第2期12卷 60-64页

作者：卢喜玲朱伟平杨榕中国石油吉林石化公司研究院吉林吉林132021

对研究ABS及ABS共混物界面形态方法进行了比较详细的论述。

关键词： ABS 共混物界面形态 ABS树脂形态结构测定法热力学参数测定法

New approach to measuring topological phase transitions utilizing Floquet technology

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Chinese Physics B 2024年第9期33卷 282-288页

作者： Xue-Ying yang wei Wu ping-Xing Chen College of Sciences National University of Defense TechnologyChangsha 410073China

The Floquet technique provides a novel anomalous topological phase for non-equilibrium phase *** on the high symmetry of the quantum anomalous Hall model,the findings suggest a one-to-one correspondence between the average spin texture and the Floquet quasi-energy spectrum.A new approach is proposed to directly measure the quasienergy spectrum,replacing previous measurements of the average spin ***,we proposed a reliable experimental scheme based on ion trap *** scheme markedly reduces the measurement workload,improves the measurement fidelity,and is applicable to multiple platforms such as cold atoms and nuclear magnetic resonance.

关键词： topological phase transition Floquet technique ion trap

中国南方3省173例HIV/MTB双重感染病例分子流行特征研究

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中国国境卫生检疫杂志 2016年第5期39卷 305-309,323页

作者：刘开明赵明惠马琳刘阳冉鑫陈绛青蔡卫平杨欣平万康林覃卫红江西国际旅行卫生保健中心江西南昌330002 南昌大学第一附属医院江西省胸科医院南昌市第九医院广州市第八人民医院云南省传染病专科医院中国疾病预防控制中心云南国际旅行卫生保健中心

目的开展人类免疫缺陷病毒/人结核分枝杆菌（HIV/MTB）双重感染病例分子分型及变异重组和流行特征研究,分析其传染源、变异性及其在人群中的传播特点和地区分布特征,为HIV/MTB双重感染病例的管理与临床精准治疗提供理论依据。方法对2014... 详细信息

目的开展人类免疫缺陷病毒/人结核分枝杆菌（HIV/MTB）双重感染病例分子分型及变异重组和流行特征研究,分析其传染源、变异性及其在人群中的传播特点和地区分布特征,为HIV/MTB双重感染病例的管理与临床精准治疗提供理论依据。方法对2014—2015年采集到的江西、广东、云南3省部分HIV/MTB双重感染173例患者115份确证的HIV阳性样本和105份鉴定的MTB菌株,分别用巢氏PCR方法和24位点MIRU-VNTR基因分型方法进行基因分型。结果流行病学个案调查资料结果显示,HIV/MTB双重感染病例以男性为主,年龄以中青年（18～59岁）为主,职业以农民、无业、务工/商人为主,传播途径以性传播和肺部感染为主,其感染顺序为先感染HIV后感染MTB占95%。分子分型结果显示,HIV/MTB双重感染病例样本中115份HIV阳性样本成功扩增分型85份,共发现8种HIV亚型/重组型;HIV/MTB双重感染病例中105份MTB样本成功扩增分型100份,结核分枝杆菌分为5个基因群（Ⅰ群、Ⅱ群、Ⅲ群、Ⅳ群、Ⅴ群）,共95个基因型。结论我国南方3省HIV/MTB双重感染病例中HIV主要流行亚型为CRF01_AE和CRF07_BC重组型;MTB主要流行株以I群和Ⅱ群为主,与单纯感染HIV和单纯感染MTB的流行株类型一致。HIV与MTB主要流行亚型之间是否存在相互易感还有待于进一步研究。

关键词：人类免疫缺陷病毒人结核分枝杆菌基因分型双重感染分子特征

A model validation method based on the orthogonal polynomial transformation and area metric

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International Journal of Modeling, Simulation, and Scientific Computing 2022年第2期13卷 215-232页

作者： Huan Zhang wei Li ping Ma Ming yang Control and Simulation Center Harbin Institute of Technology Harbin P.R.China

Modeling and Simulation Technology has become an important means to study various complex systems with its extensive ***,the accuracy of the simulation models becomes a critical problem and needs to be assessed by employing an appropri-ate model validation *** simulation models often have multivariate dynamic responses with uncertainty,while most of the existing validation methods concentrate on the validation of the static ***,a new validation method is proposed in this paper to validate the dynamic responses of the simulation models over the time domain at a single validation site and multiple validation sites through introducing the discrete Chebyshev polynomials and area *** each time series,the orthogonal expan-sion coefficients are extracted primarily by representing the time series with the discrete orthogonal ***,the area metric and the u-pooling metric are employed to validate all the uncorrelated coefficients at a single validation site and multiple vali-dation sites,respectively,and the final validation result is obtained by summarizing the metric *** feasibility and effectiveness of the proposed model validation method are illustrated through the example of the terminal guidance stage of the flight vehicle.

关键词： Model validation dynamic response uncertainty orthogonal polynomial area metric

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二次流对冷却低压涡轮流场影响的数值研究

风机技术 2022年第4期64卷 10-15页

作者：房兴龙张村元刘冬华杨伟平中国航发湖南动力机械研究所中小型航空发动机叶轮机械湖南省重点实验室

采用数值方法研究了冷气和封严气对低压涡轮内部流场的影响。在设计膨胀比下详细对比分析了冷气和封严气的流量变化对涡轮表面静压、叶栅通道马赫数、叶栅损失及流场结构的影响;计算结果表明:冷气流量增加,低压涡轮膨胀比增加,低压涡轮... 详细信息

采用数值方法研究了冷气和封严气对低压涡轮内部流场的影响。在设计膨胀比下详细对比分析了冷气和封严气的流量变化对涡轮表面静压、叶栅通道马赫数、叶栅损失及流场结构的影响;计算结果表明:冷气流量增加,低压涡轮膨胀比增加,低压涡轮导叶和动叶表面载荷增加;导叶叶栅通道主流马赫数减小而转子的主流马赫数变化较小;冷气流量变化对导叶40%叶高以下区域、转子径向40%叶高以下和80%~90%叶高区域的总压恢复系数和能量损失系数影响较大。轮毂和机匣封严气呈束状进入转子叶栅通道且腔内封严气流动受旋转轮盘抽吸效应影响较大。

关键词：冷气封严气表面静压叶栅损失抽吸效应

A New Route for Synthesis of Entecavir

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Chinese Chemical Letters 2006年第7期17卷 907-910页

作者： Li wei GUO Yuan Jing XIAO Li ping yang Department of chemistry East China Normal University Shanghai 200062

A new economical synthetic route of the key intermediate 6. The synthesis of a modified Mitsunobu reaction. of entecavir was presented, involving the preparation 6 was conveniendy achieved in good overall yield by a m... 详细信息

关键词： Entecavir new route synthesis.

Synthesis and Crystal Structure of a Novel 1D Chain-like Organic Inorganic Hybrid Rare Earth Derivative of Polyoxometalate: H_(0.5)[Sm(H_2O)_6]_(0.25)[Sm(H_2O)_5]_(0.25){[Sm(H_2O)_7][Sm(H_2O)_2-(DMSO)][SiW_(11)O_(39)]}·4.5H_2O

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Chinese Chemical Letters 2005年第12期16卷 1655-1658页

作者： Jun wei ZHAO Jing ping WANG Jing yang NIU School of Chemistry and Chemical Engineering Henan University Kaifeng 475001

A 1D chain-like organic-inorganic hybrid rare earth derivative of polyoxometalate H0.5[Sm（H2O）6]0.25[Sm（H2O）5]0.25{[Sm（H2O）7][Sm（H2O）2（DMSO）][SiW11O39]}·4.5H2O has been firstly synthesized by reaction of α-K8SiW11O39.13H2O, HClO4, Sm2O3 with dimethyl sulfoxide （DMSO） and characterized by elemental analysis, IR spectra and single crystal X-ray diffraction. The neighboring polyanionic units {[Sm（H2O）7][Sm（H2O）2（DMSO）][SiWHO39]}^2- are bridged together to a 1D chain structure by means of [Sm（H2O）2（DMSO）]^3＋ ion.

关键词： Silicotungstic acid polyoxometalate mono-vacant Keggin structure rare earth ions

Effects of high temperature during grain filling on physicochemical properties of waxy maize starch

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Journal of Integrative Agriculture 2016年第2期15卷 309-316页

作者： LU Da-lei yang Huan SHEN Xin LU wei-ping Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops Yangzhou University

Understanding the waxy maize starch physicochemical properties response to heat stress during grain filling could improve starch *** effects of heat stress during early（1-15 days after pollination,DAP） and late（16-30 DAP） grain filling stages on the starch physicochemical properties of four waxy maize varieties were *** only increased in Suyunuo 5 after exposure to high temperature at late grain filling *** effects of heat stress on digestibility and swelling power were dependent on varieties and ***,swelling power was increased by heat stress at early grain development stage and digestibility was increased by high temperature at late grain filling stage,*** results of correlation analysis indicated the starch with large granule size could swell well and easy ***,trough,final,and breakdown viscosities in response to heat stress were dependent on stages and *** general,peak,trough and final viscosities were decreased and increased by heat stress at early grain formation and late grain filling stages,respectively;whereas the breakdown and setback viscosities were similar among the three *** stress increased the gelatinization temperatures and retrogradation *** range decreased under heat stress at 1-15 DAP but remained constant under heat stress at 16-30 DAP in all *** starch exposed to high temperature at 16-30 DAP presented higher digestibility and peak viscosity and lower retrogradation percentage than those at 1-15 ***,heat stress at early grain formation stage severely affects the physicochemical properties of starch.

关键词： waxy maize heat stress digestibility pasting gelatinization retrogradation

Overview of computation strategies on the dispersion analysis for explicit finite difference solution of acoustic wave equation

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Petroleum Science 2024年第4期21卷 2311-2328页

作者： Jian-ping Huang wei-Ting Peng Ji-Dong yang Lu-Feng Lou School of Geosciences China University of Petroleum(East China)Qingdao266580ShandongChina Pilot National Laboratory for Marine Science and Technology(Qingdao) Qingdao266000ShandongChin

Finite-difference(FD)method is the most extensively employed numerical modeling ***,when using the FD method to simulate the seismic wave propagation,the large spatial or temporal sampling interval can lead to dispersion errors and numerical *** the FD scheme,the key factor in determining both dispersion errors and stability is the selection of the FD ***,How to obtain appropriate FD weights to guarantee a stable numerical modeling process with minimum dispersion error is *** FD weights computation strategies can be classified into three types based on different computational ideologies,window function strategy,optimization strategy,and Taylor expansion *** this paper,we provide a comprehensive overview of these three strategies by presenting their fundamental *** conduct a set of comparative analyses of their strengths and weaknesses through various analysis tests and numerical *** to these comparisons,we provide two potential research directions of this field:Firstly,the development of a computational strategy for FD weights that enhances stability;Secondly,obtaining FD weights that exhibit a wide bandwidth while minimizing dispersion errors.

关键词： Finite-difference scheme FD coefficients Dispersion error Forward modeling Numerical simulation

A Memory-Guided Anomaly Detection Model with Contrastive Learning for Multivariate Time Series

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Computers, Materials & Continua 2023年第11期77卷 1893-1910页

作者： wei Zhang ping He Ting Li Fan yang Ying Liu School of Electronic and Information Engineering Hebei University of TechnologyTianjin300401China School of Artificial Intelligence Hebei University of TechnologyTianjin300401China School of Computer Science and Engineering University of Electronic Science and Technology of ChinaChengdu611731China

Some reconstruction-based anomaly detection models in multivariate time series have brought impressive performance advancements but suffer from weak generalization ability and a lack of anomaly *** limitations can result in the misjudgment of models,leading to a degradation in overall detection *** paper proposes a novel transformer-like anomaly detection model adopting a contrastive learning module and a memory block(CLME)to overcome the above *** contrastive learning module tailored for time series data can learn the contextual relationships to generate temporal fine-grained *** memory block can record normal patterns of these representations through the utilization of attention-based addressing and reintegration *** two modules together effectively alleviate the problem of ***,this paper introduces a fusion anomaly detection strategy that comprehensively takes into account the residual and feature *** a strategy can enlarge the discrepancies between normal and abnormal data,which is more conducive to anomaly *** proposed CLME model not only efficiently enhances the generalization performance but also improves the ability of anomaly *** validate the efficacy of the proposed approach,extensive experiments are conducted on well-established benchmark datasets,including SWaT,PSM,WADI,and *** results demonstrate outstanding performance,with F1 scores of 90.58%,94.83%,91.58%,and 91.75%,*** findings affirm the superiority of the CLME model over existing stateof-the-art anomaly detection methodologies in terms of its ability to detect anomalies within complex datasets accurately.

关键词： Anomaly detection multivariate time series contrastive learning memory network