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中国实用妇科与产科杂志 2024年第8期40卷 801-804页

作者：王广娇刘国莉北京大学人民医院妇产科北京100044

产科脓毒症及脓毒性休克严重威胁着母儿健康,了解其发病危险因素、病因、临床表现,有利于更好地预防和早期预警,进而有效改善母儿结局。

关键词：脓毒症脓毒性休克预防预警

知识图谱技术在雷达情报处理与运用综合实践课程中的应用研究

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甘肃开放大学学报 2024年第1期34卷 72-74,88页

作者：刘立国海军工程大学电子工程学院湖北武汉430033

针对雷达情报处理与运用综合实践课程知识体系实践教学效果不佳的问题,提出了将知识图谱技术应用于实践课程教学。首先分析了雷达情报处理与运用实践课程教学在知识体系构建中面临的现实问题。然后讨论了将知识图谱技术应用于雷达情报... 详细信息

针对雷达情报处理与运用综合实践课程知识体系实践教学效果不佳的问题,提出了将知识图谱技术应用于实践课程教学。首先分析了雷达情报处理与运用实践课程教学在知识体系构建中面临的现实问题。然后讨论了将知识图谱技术应用于雷达情报处理与运用综合实践课程的内涵和内在逻辑。接着提出了面向实际应用场景的雷达情报处理与运用知识图谱构建方法。最后,设计了基于知识图谱的雷达情报处理与运用综合实践课程实践路径,并利用实际应用数据开展了案例教学。本文提出利用知识图谱将分散的知识点按照课程需要构建为结构化的知识体系,提高了学生对繁杂教学内容的掌握程度,可以为其他同类课程教学提供参考。

关键词：知识图谱雷达情报处理与运用综合实践课程教学应用

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郑律成音乐创作的艺术风格与历史贡献

湖北开放职业学院学报 2024年第6期37卷 196-198页

作者：刘国丽吕梁师范高等专科学校山西吕梁033000

在郑律成的一生中,经历了多次战争,包括解放战争、抗日战争和抗美援朝战争,其创作出来的作品高达360余部,既是抒情颂歌的开辟者,更是中国和朝鲜两国在军歌上的主要创作者。他创作出来的歌曲具有一定的超时代性特点,直至21世纪的今天,听... 详细信息

在郑律成的一生中,经历了多次战争,包括解放战争、抗日战争和抗美援朝战争,其创作出来的作品高达360余部,既是抒情颂歌的开辟者,更是中国和朝鲜两国在军歌上的主要创作者。他创作出来的歌曲具有一定的超时代性特点,直至21世纪的今天,听到仍然可以振奋人心。与此同时,他创作出来的作品题材较为丰富多样,并非简单地局限于一种风格,题材较为多元化,受众群体也十分广泛,是我国在新音乐运动上的主要先驱者。受到冼星海和聂耳等音乐先辈思想的深刻启发,成了继他们之后的优秀作曲家之一。郑律成为我国近现代时期比较具有代表性的杰出音乐家之一,他创作出来的音乐作品堪称音乐史中的璀璨瑰宝。基于此,文章针对郑律成音乐创作风格展开研究,并提出创作音乐的历史贡献,以供参考。

关键词：郑律成音乐创作艺术风格历史贡献

Transformations for the variable coefficient Ginzburg-Landau equation with symbolic computation

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The Journal of China Universities of Posts and Telecommunications 2006年第3期13卷 98-101页

作者： liu Jian-guo li Ye-zhou School of Science Beijing University of Posts and TelecommunicationsBeijing 100876 China

This article is devoted to seek the solutions of the variable coefficient Ginzburg-Landan （vcGL） equation. With the help of symbolic computation and a direct ansaeitz, four transformations, reduction of the vcGL equation to the standard and cylindrical nonlinear Schr＇odinger equation, which have been found as variety of analytic solutions were obtained. Substituting these solutions into those transformations, the corresponding analytic solutions for the vcGL were obtained.

关键词： transformations Ginzburg-Landau equation,symbolic computation variable coefficient

Pairing and Quantum Double of Finite Hopf C~*-Algebras

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Acta Mathematica Sinica,English Series 2007年第6期23卷 1121-1128页

作者： Ming liu li Ning JIANG guo Sheng ZHANG Department of Mathematics Beijing Institute of Technology Beijing 100081 P. R. China

This paper defines a pairing of two finite Hopf C^＊-algebras A and B, and investigates the interactions between them. If the pairing is non-degenerate, then the quantum double construction is given. This construction yields a new finite Hopf C^＊-algebra D（A, B）. The canonical embedding maps of A and B into the double are both isometric.

关键词： Hopf C^*-algebra pairing quantum double GNS representation

Ethanol steam reforming over Ni-Cu/Al_2O_3-M_yO_z (M = Si, La, Mg,and Zn) catalysts

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Journal of Natural Gas Chemistry 2009年第1期18卷 55-65页

作者： lifeng Zhang Jie liu Wei li Cuili guo Jinli Zhang School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China

Ni-based catalysts doped with copper additives were studied on their role in ethanol steam reforming reaction. The effects of Cu content, support species involving Al2O3-SIO2, Al2O3-MgO, Al2O3-ZnO, and Al2O3-La2O3, on the catalytic performance were studied. Characterizations by TPR, XRD, NH3-TPD, XPS, and TGA indicated that catalysts 30Ni5Cu/Al2O3-MgO and 30Ni5Cu/Al2O3-ZnO have much higher H2 selectivity than 30Ni5Cu/Al2O3-SiO2, as well as good coke resistance. H2 selectivity for 30Ni5Cu/Al2O3-MgO catalyst was 73.3% at 450 ℃ and increased to 94.0% at 600℃, whereas for 30Ni5Cu/Al2O3-ZnO catalyst, the H2 selectivity was 63.6% at 450 ℃ and 95.2% at 600℃. TheseAl2O3-MgO and Al2O3-ZnO supported Ni-Cu bimetallic catalysts may have important applications in the production of hydrogen by ethanol steam reforming reactions.

关键词： ethanol steam reforming nickel-copper-based catalyst Al2O3-SO2 support Al2O3-MgO support Al2O3-ZnO support Al2O3-La2O3 support

Lepton-Flavor Violating Processes li → ljγ in Topcolor-Assisted Technicolor Models

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Communications in Theoretical Physics 2002年第10期38卷 461-464页

作者： YUE Chong-Xing XU Qing-Jun liu guo-li CCAST World Laboratory P.O. Box 8730 Beijing 100080 China College of Physics and Information Engineering Henan Normal University Xinxiang 453002 China College of Physics and Information Engineering Henan Normal University Xinxiang 453002 China College of Physics and Information Engineering Henan Normal University Xinxiang 453002 China

We consider the lepton-flavor violating (LFV) processes li → ljγ in the framework of topcolor-assistedtechnicolor (TC2) models. We find that the new gauge boson Z' predicted by TC2 models can give significantlycontributions to these processes via the flavor-changing couplings Z'lilj. The present experimental bound on the LFVprocess μ→ eγ gives severe constraints on the TC2 models. Using other experimental constraints on the Z' mass Mz,we obtain constraints on the lepton mixing factors KTμ and KTe. The future LFV experiments will probe into TC2models.

关键词： lepton flavor, topcolor-assisted technicolor (TC2)

Study the ethanol SI/HCCI combustion mode transition by using the fast thermal management system

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Chinese Science Bulletin 2007年第19期52卷 2731-2736页

作者： PENG YaPing TAN ManZhi guo liang liu FaFa li Hua guo YingNan Department of Internal Combustion Engine Campus Nanling Jilin University Changchun 130022 China

In this paper the ethanol homogeneous charge compression ignition (HCCI) is achieved in a modified single cylinder engine by means of a self-developed fast thermal management system (FTMS), and the ethanol SI/HCCI operation regions are defined. It can be concluded that the thermal efficiency is higher and the NOx emission is lower in the HCCI operation region. In addition, the maximum NOx emission drops by 98%. The ethanol SI/HCCI combustion mode transition is conducted in different conditions near the SI/HCCI operation boundaries. It is likely to realize the transition by the utilization of FTMS. However, it is impossible to complete the transition within one operating cycle under current operation conditions. There are fluctuations in engine speed and brake mean effective pressure during the transition process. In order to reduce the fluctuations during the transition, the initial work concerning the effects of the spark ignition on the transition smoothness is carried out and the investigation indicates that the engine speed and brake mean effective pressure fluctuations cannot be eradicated only through spark ignition. Therefore, the control strategies combined with other factors should be further optimized.

关键词：电荷压缩点火乙醇燃烧模型火花

Hydrothermal Synthesis,Structure and Characterization of a New 2D Co(Ⅱ) Coordination Polymer Based on Flexible Double Imidazole Derivative and Oxalate

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Chemical Research in Chinese Universities 2012年第6期28卷 942-946页

作者： liu lian-li HUANG Jing-jing WANG Xiu-li liu guo-cheng YANG Song MU Bao Silicon Materials Engineering Technology Research Centre of liaoning Province Department of Chemistry Bohai University Jinzhou 121000 P. R. China

A 1D supramolecular compound [dmbbbi]（1） and a 2D cobalt coordination polymer [Co（dmbbbi）（ox）] 2（2） [dmbbbi=1,1-（1,4-butanediyl）bis（5,6-dimethylbenzimidazole）,ox=oxalate],C48H52Co2N8O8,were obtained under hydrothermal conditions by tuning the molar ratio of the *** crystal structure analysis reveals that in compound 1,the adjacent dmbbbi molecules connect with each other via hydrogen bonds to form a 1D supramolecular *** compound 2,two crystallographically independent Co2＋ ions show the same six-coordination *** Co2＋ ion is coordinated by four oxygen atoms from two ox anions and two nitrogen atoms from two cis-dmbbbi *** adjacent Co2＋ ions are bridged by ox anions to generate an infinite 1D zigzag chain,which is extended by pairs of dmbbbi ligands to form a 2D honeycomb-like（6,3） ***,the thermal stability and the electrochemical property of compound 2 were studied.

关键词： Hydrothermal synthesis Crystal structure Molar ratio Double imidazole derivative

Estimates on Blow-up Rate of Nonlinear Parabolic Systems with Nonlinear Boundary Conditions

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Chinese Quarterly Journal of Mathematics 2005年第4期20卷 401-405页

作者： liu Wei-ling li guo-fu Department of Mathematics Zhengzhou Teacher＇s College Zhengzhou 450044 China

In this paper, the estimate on blow-up rate of the following nonlinear parabolic system is considered：{ut=uxx＋u^l 11v^l 12,vt=vxx＋u^l21v^l22,（x,t）∈（0,1）×（0,T）,ux（0,t）=0,vx（0,t）=0,t∈（0,T）,ux（1,t）=（u^p11v^p12）（1,t）,vx（1,t）=（u^p21v^p22）（1,t）,t∈（0,T）,u（x,0）=u0（x）,v（x,0）=v0（x）,x∈（0,1）We will prove that there exist two positive constants such that：c≤max x∈[0,1]u（x,t）（T-t）^r（l1-1）≤C,0〈t〈T,c≤max x∈[0,1] v（x,t）（T-t）^1/（t1-1）≤C,0〈t〈*** l1=l21α/α2＋l22,r=α1/α2〉1,α1≤α2〈0.

关键词： nonlinear boundary condition nonlinear parabolic system blow-up rate