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2023年河南省高产玉米新品种展示试验分析

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中国种业 2024年第7期 111-117页

作者：周宁张香粉刘桂珍河南农业大学郑州450002 河南省种业发展中心郑州450046

为加快河南省玉米优良新品种推广步伐,促进玉米品种更新换代,2023年河南省种业发展中心征集45个高产玉米新品种进行了展示示范。结果表明,有42个品种每667m2产量高于对照郑单958,增幅为0.48%~19.85%;所有品种变异系数、高稳系数均较小,... 详细信息

为加快河南省玉米优良新品种推广步伐,促进玉米品种更新换代,2023年河南省种业发展中心征集45个高产玉米新品种进行了展示示范。结果表明,有42个品种每667m2产量高于对照郑单958,增幅为0.48%~19.85%;所有品种变异系数、高稳系数均较小,分别在10.07%~18.08%、3.65%~22.72%之间;名鼎26、浚单678、华西812、中科玉505、鑫农科898、新科208、航星708、现代959、京科938等9个品种显示出优良的丰产性、稳定性,可在河南省广泛推广种植,驻玉927、郑单7137这2个品种因倒伏倒折率之和较高,在河南省推广时需注意防止倒伏、倒折发生;相关性分析表明,各品种农艺性状之间存在不同程度的相关性,玉米产量与穗长、穗粗、百粒重呈极显著正相关。通过选择具有优良性状的品种,结合科学的栽培管理措施,有望进一步提高河南省玉米的产量和品质,为玉米产业高质量发展奠定基础。

关键词：河南省玉米高产品种展示

THE METHOD OF COLORING IN GRAPHS AND ITS APPLICATION

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Journal of Systems Science & Complexity 2010年第5期23卷 951-960页

作者： guizhen liu Jianfeng HOU School of Mathematics Shandong University Jinan 250100 China Center for Discrete Mathematics Fuzhou University Fuzhou 350002 China School of Mathematics Shandong University Jinan 250100 China

Graph coloring has interesting real life applications in optimization and network design. In this paper some new results on the acyclic-edge coloring, f-edge coloring, g-edge cover coloring, (g, f)-coloring and equitable edge-coloring of graphs are introduced. In particular, some new results related to the above colorings obtained by the authors are given. Some new problems and conjectures are presented.

关键词：着色方法应用作者无圈边着色边覆盖染色网络设计图的着色图着色

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北方酱香大曲酒工艺技术创新

酿酒 2024年第2期51卷 96-99页

作者：董伟杰刘民万刘桂珍武金玲闫涛张世文山东云门酒业股份有限公司山东青州262500

酱香型白酒以贵州茅台酒为代表,是我国五大主要香型白酒之一。作为中国传统优质白酒的代表,因其独特风格深受消费者欢迎,但是因南北方环境、气候、水土、原料等差异,各地所产的酒质量不一。我公司从原料、制曲、酿造、贮存、勾调等方面... 详细信息

酱香型白酒以贵州茅台酒为代表,是我国五大主要香型白酒之一。作为中国传统优质白酒的代表,因其独特风格深受消费者欢迎,但是因南北方环境、气候、水土、原料等差异,各地所产的酒质量不一。我公司从原料、制曲、酿造、贮存、勾调等方面采取了一些措施,并因地制宜的制定工艺路线,提高了北方酱香大曲酒的质量。

关键词：北方酱香大曲酒工艺技术创新

Nowhere-zero 3-flows in matroid base graph

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Frontiers of Mathematics in China 2013年第1期8卷 217-227页

作者： Yinghao ZHANG guizhen liu School of Mathematics Shandong University Jinan 250100 China

The base graph of a simple matroid M = （E, A） is the graph G such that V（G） = A and E（G） = {BB＇： B, B＇ B, [B ／ B＇｜ = 1}, where the same notation is used for the vertices of G and the bases of M. It is proved that the base graph G of connected simple matroid M is Z3-connected if ｜V（G）｜ ≥5. We also proved that if M is not a connected simple matroid, then the base graph G of M does not admit a nowhere-zero 3-flow if and only if IV（G）[ =4. Furthermore, if for every connected component Ei （ i≥ 2） of M, the matroid base graph Gi of Mi=MIEi has IV（Gi）｜≥5, then G is Z3-connected which also implies that G admits nowhere-zero 3-flow immediately.

关键词： Matroid base graph nowhere-zero 3-flow Z3-connectivity

Wellbore leakage risk management in CO_(2) geological utilization and storage: A review

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Energy Reviews 2023年第4期2卷 35-48页

作者： Xuebin Su Sinan liu Liwei Zhang guizhen liu Yan Wang Manguang Gan Xiaochun Li China National Uranium Co. Ltd.Beijing100013China State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China University of Chinese Academy of Sciences Beijing100049China

CO_(2) geological utilization and storage(CGUS)is an important technology to achieve a deep cut of global CO_(2) ***_(2) leakage from the subsurface may impair the performance of CGUS projects,and the CO_(2) leakage through wellbores is the most common leakage *** paper proposes a workflow for wellbore CO_(2) leakage risk management,and the workflow consists of the following steps:i)leakage risk identification;ii)leakage risk evaluation;iii)leakage risk monitoring;iv)leakage *** approaches in each step of the workflow are systematically *** challenges of wellbore CO_(2) leakage risk management include:lack of effective detection and evaluation approaches to tackle the CO_(2) leakage risk induced by cement failure;lack of low-cost acid resistance alloys and CO_(2)-resistant cement;lack of automated monitoring systems that could enable automated shutdowns of the wellbore whenever certain warning criteria are met.

关键词： CO_(2)storage CGUS Wellbore leakage Risk evaluation Monitoring Cement degradation

Properties of Hamilton cycles of circuit graphs of matroids

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Frontiers of Mathematics in China 2013年第4期8卷 801-809页

作者： Hao FAN guizhen liu School of Mathematics Shandong University Jinan 250100 China

Let G be a circuit graph of a connected matroid. P. Li and G. liu [Comput. Math. Appl., 2008, 55： 654-659] proved that G has a Hamilton cycle including e and another Hamilton cycle excluding e for any edge e of G if G has at least four vertices. This paper proves that G has a Hamilton cycle including e and excluding e＇ for any two edges e and e＇ of G if G has at least five vertices. This result is best possible in some sense. An open problem is proposed in the end of this paper.

关键词： Matroid circuit graph of matroid Hamilton cycle

List edge and list total coloring of 1-planar graphs

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Frontiers of Mathematics in China 2012年第5期7卷 1005-1018页

作者： Xin ZHANG Jianliang WU guizhen liu School of Mathematics Shandong UniversityJinan 250100China

A graph is 1-planar if it can be drawn on the plane so that each edge is crossed by at most one other edge. In this paper, it is proved that each 1-planar graph with maximum degree △ is （A ＋ 1）-edge-choosable and （△ ＋ 2）- total-choosable if △ ≥ 16, and is A-edge-choosable and （△ ＋ 1）-total-ehoosable if △ ≥21. The second conclusion confirms the list coloring conjecture for the class of 1-planar graphs with large maximum degree.

关键词： 1-planar graph list coloring conjecture discharging

Optimal Operation Strategy of Electricity-Hydrogen Regional Energy System under Carbon-Electricity Market Trading

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Energy Engineering 2024年第3期121卷 619-641页

作者： Jingyu Li Mushui Wang Zhaoyuan Wu guizhen Tian Na Zhang Guangchen liu Inner Mongolia Key Laboratory of Electrical Energy Conversion Transmission and Control Inner Mongolia University of TechnologyHohhot010080China School of Electric Power Inner Mongolia University of TechnologyHohhot010080China School of Electrical and Electronic Engineering North China Electric Power UniversityBeijing102206China

Given the“double carbon”objective and the drive toward low-carbon power,investigating the integration and interaction within the carbon-electricity market can enhance renewable energy utilization and facilitate energy conservation and emission reduction ***,further research is necessary to explore operational optimization methods for establishing a regional energy system using Power-to-Hydrogen(P2H)technology,focusing on participating in combined carbon-electricity market *** study introduces an innovative Electro-Hydrogen Regional Energy System(EHRES)in this *** system integrates renewable energy sources,a P2H system,cogeneration units,and energy storage *** core purpose of this integration is to optimize renewable energy utilization and minimize carbon *** study aims to formulate an optimal operational strategy for EHRES,enabling its dynamic engagement in carbon-electricity market *** initial phase entails establishing the technological framework of the electricity-hydrogen coupling system integrated with ***,an analysis is conducted to examine the operational mode of EHRES as it participates in carbon-electricity market ***,the system scheduling model includes a stepped carbon trading price mechanism,considering the combined heat and power generation characteristics of the Hydrogen Fuel Cell(HFC).This facilitates the establishment of an optimal operational model for EHRES,aiming to minimize the overall operating *** simulation example illustrates that the coordinated operation of EHRES in carbon-electricity market transactions holds the potential to improve renewable energy utilization and reduce the overall system *** result carries significant implications for attaining advantages in both low-carbon and economic aspects.

关键词： Regional energy system electro-hydrogen coupling carbon-electricity market step carbon trading coordination and optimization

Existence of rainbow matchings in properly edge-colored graphs

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Frontiers of Mathematics in China 2012年第3期7卷 543-550页

作者： Guanghui WANG Jianghua ZHANG guizhen liu School of Mathematics Shandong UniversityJinan 250100China School of Management Shandong UniversityJinan 250100China

Let G be a properly edge-colored graph. A rainbow matching of G is a matching in which no two edges have the same color. Let 5 denote the minimum degree of G. We show that if Iv（G）I 〉（σ2 ＋ 14σ ＋ 1）/4, then G has a rainbow matching of size 6, which answers a question asked by G. Wang [Electron. J. Combin., 2011, 18： #N162] affirmatively. In addition, we prove that if G is a properly colored bipartite graph with bipartition （X, Y） and max{lXl, IYI} 〉（σ2 ＋ 4σ - 4）/4, then G has a rainbow matching of size σ.

关键词： Rainbow matching properly edge-colored graph