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Outer-Independent Roman Domination on Cartesian Product of Paths

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Journal of Mathematical Research with Applications 2025年第1期45卷 11-19页

作者： Junzhe GUO hong gao Yuansheng YANG College of Science Dalian Maritime University School of Computer Science and Technology Dalian University of Technology

Outer-independent Roman domination on graphs originates from the defensive strategy of Ancient Rome, which is that if any city without an army is attacked, a neighboring city with two armies could mobilize an army to support it and any two cities that have no army cannot be adjacent. The outer-independent Roman domination on graphs is an attractive topic in graph theory, and the definition is described as follows. Given a graph G =(V, E), a function f : V(G) → {0, 1, 2} is an outer-independent Roman dominating function(OIRDF) if f satisfies that every vertex v ∈ V with f(v) = 0 has at least one adjacent vertex u ∈ N(v) with f(u) = 2,where N(v) is the open neighborhood of v, and the set V0 = {v|f(v) = 0} is an independent set. The weight of an OIRDF f is w(f) =∑v∈Vf(v). The value of minf w(f) is the outerindependent Roman domination number of G, denoted as γoiR(G). This paper is devoted to the study of the outer-independent Roman domination number of the Cartesian product of paths Pn□Pm. With the help of computer, we find some recursive OIRDFs and then we present an upper bound of γoiR(Pn□Pm). Furthermore, we prove the lower bound of γoiR(Pn□Pm)(n ≤ 3)is equal to the upper bound. Hence, we achieve the exact value of γoiR(Pn□Pm) for n ≤ 3 and the upper bound of γoiR(Pn□Pm) for n ≥ 4.

关键词： Roman domination outer-independent Roman domination Cartesian product graphs paths

Emergent 3×3 charge order on the Cs reconstruction of kagome superconductor CsV3Sb5

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Chinese Physics B 2025年第1期34卷 46-51页

作者： Xianghe Han Zhongyi Cao Zihao Huang Zhen Zhao Haitao Yang Hui Chen hong-Jun gao Beijing National Center for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Hefei National Laboratory Hefei 230088China

The alkali adatoms with controlled coverage on the surface have been demonstrated to effectively tune the surface band of quantum materials through in situ electron ***,the interplay of orderly arranged alkali adatoms with the surface states of quantum materials remains ***,by using low-temperature scanning tunneling microscopy/spectroscopy(STM/S),we observed the emergent 3×3 super modulation of electronic states on the√3×√3R30°(R3)Cs ordered surface of kagome superconductor *** nondispersive 3×3 superlattice at R3 ordered surface shows contrast inversion in positive and negative differential conductance maps,indicating a charge order *** 3×3 charge order is suppressed with increasing temperature and undetectable at a critical temperature of~62 ***,in the Ta substituted sample CsV_(2.6)Ta_(0.4)Sb_(5),where long-range 2×2×2 charge density wave is significantly suppressed,the 3×3 charge order on the R3 ordered surface becomes blurred and much weaker than that in the undoped *** indicates that the 3×3 charge order on the R3 ordered surface is directly correlated to the bulk charge density waves in CsV_(3)Sb_(5.O)ur work provides a new platform for understanding and manipulating the cascade of charge orders in kagome superconductors.

关键词： CsV3Sb5 surface reconstruction alkali atoms charge order scanning tunneling microscope/spectroscopy

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透平式能量回收一体机轴向力特性

排灌机械工程学报 2025年第1期43卷 17-23页

作者：高鸿杨港丁竞飞张德胜江苏大学国家水泵及系统工程技术研究中心江苏镇江212013

为研究透平式能量回收一体机的转子系统轴向窜动平衡轴向力特性,应用雷诺时均法(RANS)并采用SST k-ω模型对一体机进行了全流场数值模拟计算,分析了轴向间隙尺寸变化对一体机水力性能的影响,获得了一体机在5组轴向间隙尺寸下的内流特性... 详细信息

为研究透平式能量回收一体机的转子系统轴向窜动平衡轴向力特性,应用雷诺时均法(RANS)并采用SST k-ω模型对一体机进行了全流场数值模拟计算,分析了轴向间隙尺寸变化对一体机水力性能的影响,获得了一体机在5组轴向间隙尺寸下的内流特性及轴向力变化特性.结果表明:轴向间隙尺寸对透平端的间隙泄漏流影响较大,增大轴向间隙可使透平端效率最大下降8%,而泵端水力性能所受影响较小,基本保持不变;在额定工况下,随着轴向间隙尺寸增大,透平端前腔体内平均压力最终下降0.37 MPa,一体机转子系统的轴向力指向透平端,轴向力值增大5 kN左右.研究结果可为透平式能量回收一体机设计和运行提供理论指导.

关键词：能量回收一体机轴向间隙轴向力数值模拟

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An Explicit Exact Solution of a Nonlinear Schrödinger Equation for Short Ultraintense Laser Pulse in an Underdense Plasma

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Chinese Physics Letters 1996年第8期13卷 561-564页

作者： gao hong-jun Laboratory of Computational Physics Institute of Applied Physics and Computational MathematicsBeijing 100088

A nonlinear Schrödinger equation for short ultraintense laser pulses in an underdense plasma has been discussed,and three types explicit exact solutions of this equation are obtained by using analytical method.

关键词： method intense equation

The physical origin of optical flares following GRB 110205A and the nature of the outflow

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Research in Astronomy and Astrophysics 2011年第11期11卷 1317-1326页

作者： Wei-hong gao Department of Physics and Institute of Theoretical Physics Nanjing Normal University Nanjing210008 China

The optical emission of GRB 110205A is distinguished by two flares. We examine two possible scenarios for the optical afterglow emission. In the first scenario, the first optical flare is the reverse shock emission of the main outflow and the second one is powered by the prolonged activity of the central engine. However, we find that it is rather hard to reasonably interpret the late （t〉0.1 d） afterglow data unless the GRB efficiency is very high （~0.95）. In the second scenario, the first optical flare is the low energy prompt emission and the second one is the reverse shock of the initial outflow. Within this scenario we can interpret the late afterglow emission self-consistently. The reverse shock region may be weakly magnetized and the decline of the second optical flare may be dominated by the high latitude emission, for which strong polarization evolution accompanying the quick decline is possible, as suggested by Fan et al. in 2008. Time-resolved polarimetry by RINGO2-like polarimeters will directly test our prediction.

关键词： gamma rays bursts-polarization-GRBs jets and outflows-radiation mechanisms non-thermal

HUITWU： An Efficient Algorithm for High-Utility Itemset Mining in Transaction Databases

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Journal of Computer Science & Technology 2016年第4期31卷 776-786页

作者： Shi-Ming Guo hong gao School of Computer Science and Technology Harbin Institute of Technology Harbin 150001 China

Mining high-utility itemsets （HUIs） from a transaction database refers to the discovery of itemsets with high utilities like profits. Most of existing studies discover HUIs from a transaction database in two phases. In phase 1, different overestimation methods are applied to calculate the upper bounds of the utilities of itemsets. Since the overestimated utilities of itemsets are adopted, the itemsets whose overestimated utilities are no less than a user-specified threshold are selected as candidate HUIs, and they are verified by scanning the database one more time in phase 2. However, a large number of candidate HUIs incur two problems： 1） it requires excessive memory to store these candidates; 2） it needs a large amount of running time to calculate their exact utilities. Vertical data format has been applied to mine HUIs recently. However this kind of method cannot deal with transactions with the same items effectively so that the size of database cannot be reduced sufficiently. The overall performance of algorithms is degraded consequently. Thus an algorithm HUITWU is proposed in this paper for mining HUIs. A novel data structure HUITwu-Tree is adopted to efficiently calculate the utilities of itemsets in a database. Extensive studies with both sparse and dense datasets have demonstrated that our proposed algorithm is more than an order of magnitude faster and consumes less memory than the state-of-the-art algorithms.

关键词： data mining high-utility itemset pattern growth

不同加工方式对体外模拟胃肠消化香菇活性物质含量及活性的影响

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食品科学 2025年第2期46卷 183-192页

作者：姚芬刘红霞范秀芝史德芳殷朝敏高虹张玉姚望湖北省农业科学院农产品加工与核农技术研究所湖北武汉430064 湖北工业大学生命科学与健康工程学院湖北武汉430068 武汉市储备粮保障中心湖北武汉430021

为研究不同加工方式和处理时间对香菇体外模拟胃肠消化后活性物质含量及体外活性的影响,采用蒸制、煮制、空气炸和烤箱烤制4种方式处理香菇,通过模拟体外胃肠消化后测定消化液中总酚、总黄酮、粗多糖和香菇嘌呤含量及其体外抗氧化、降... 详细信息

为研究不同加工方式和处理时间对香菇体外模拟胃肠消化后活性物质含量及体外活性的影响,采用蒸制、煮制、空气炸和烤箱烤制4种方式处理香菇,通过模拟体外胃肠消化后测定消化液中总酚、总黄酮、粗多糖和香菇嘌呤含量及其体外抗氧化、降血脂和降血糖活性,并对消化液的体外活性和活性物质含量相关性进行分析。结果表明,消化前,与蒸制、煮制和空气炸处理相比,烤箱烤制更利于香菇中4种活性物质的保留,其中烤制5 min时总酚、总黄酮和粗多糖的含量和烤制15 min时香菇嘌呤的含量相对较高,分别为(222.13±3.57)mg/g、(4.49±0.06)mg/g、(5.57±0.28)g/100 g和(551.31±3.76)mg/100 g。经体外胃肠消化后,烤箱烤制香菇活性物质释放量相对较高,其次为空气炸。除烤箱烤制香菇总黄酮的释放量随烤制时间延长而降低外,其余活性物质释放量与加工时长无明显相关性。蒸制处理后香菇肠消化液的体外活性相对较高,其中,蒸制20 min的香菇肠消化液1,1-二苯基-2-三硝基苯肼自由基清除率和蒸制10 min的2,2′-联氮-双(3-乙基苯并噻唑啉-6-磺酸)(2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid),ABTS)阳离子自由基清除率最高(P0.05);蒸制10 min时肠消化液的胰脂肪酶抑制活性相对较强(P>0.05),为(49.42±2.32)%。相关性分析发现,胃消化液的α-葡萄糖苷酶抑制活性与其总酚(P<0.01)和香菇嘌呤(P<0.05)含量呈显著正相关,ABTS阳离子自由基抑制率与其总酚(P<0.05)和粗多糖(P<0.01)含量呈显著正相关;而肠消化液的胰脂肪酶抑制活性与4种活性物质含量均呈极显著负相关(P<0.01)。综上可以看出烤制更有利于活性物质的保留和消化释放,而蒸制更利于改善香菇肠消化液的体外活性。本研究为香菇科学合理的加工提供了指导。

关键词：香菇加工方式总酚总黄酮粗多糖香菇嘌呤体外活性

中医药调控中性粒细胞胞外诱捕网机制防治代谢性疾病的研究进展

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中国中药杂志 2025年第1期50卷 78-92页

作者：张赛樊明媛袁久术姚淇元谢红艳袁海泼高泓成都中医药大学附属医院四川成都610072 代谢性疾病中医药调控四川省重点实验室四川成都610075

代谢性疾病近年来发病率稳步上升,已成为全球亚健康状态的主要原因之一。中性粒细胞胞外诱捕网(NETs)是一种包含DNA的网状复合物,并以此为基质诱捕外来微生物或诱导免疫反应。当前研究表明,NETs广泛活跃于多种代谢性疾病中,并通过促进... 详细信息

代谢性疾病近年来发病率稳步上升,已成为全球亚健康状态的主要原因之一。中性粒细胞胞外诱捕网(NETs)是一种包含DNA的网状复合物,并以此为基质诱捕外来微生物或诱导免疫反应。当前研究表明,NETs广泛活跃于多种代谢性疾病中,并通过促进血糖升高、损伤血管内皮细胞、形成血管栓塞、激发剧烈炎症、促进脂质堆积累等多种方式对机体造成严重损害,因此干预NETs是治疗代谢性疾病的一个重要途径。研究发现,脾瘅-浊毒理论与代谢性疾病-NETs机制有着紧密联系,其基本病机为痰湿内蕴、气滞血瘀、湿热内蕴、痰瘀互结、热毒内盛等,而多种具有祛湿、化痰、活血化瘀、清热解毒功效的中药及其提取物和复方可通过调节NETs治疗代谢性疾病,延缓病程进展。该文详细梳理了NETs形成机制、与代谢性疾病的联系、中医理论依据、在众多代谢性疾病中的作用,以及当前中医药调控NETs防治代谢性疾病的研究现状,旨在为代谢性疾病开发治疗手段提供有效参考思路。

关键词：代谢性疾病中性粒细胞胞外诱捕网中医药脾瘅浊毒研究进展

Influence of Twinning Texture on the Corrosion Fatigue Behavior of Extruded Magnesium Alloys

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Acta Metallurgica Sinica(English Letters) 2021年第1期34卷 65-76页

作者： Jiaqi Hu Qite Li hong gao School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China

Bio-magnesium alloys have received great attention due to their degradability and *** fatigue failure is a huge challenge in vivo for bio-magnesium alloy *** the eff ects of twinning textures on the corrosion fatigue of magnesium alloys is meaningful for the *** the current study,pre-compression strains of 2%and 4%were carried out on extruded *** effects of twinning texture on the corrosion performance and corrosion fatigue resistance were *** hydrogen evolution tests indicated that twinning texture enhanced the corrosion resistance of longitudinal cross section by improving uniformity of surface *** results of corrosion fatigue tests indicated that the differences in mechanical damage caused by twinning texture dominated the corrosion fatigue behavior under high stress *** secondary cracks of surface deteriorated the corrosion fatigue resistance of the original specimens under low stress *** compact corrosion film and the re-passivation of matrix suppressed the hydrogen induced cracking,thereby improving the corrosion fatigue resistance of the pre-compression specimens.

关键词： Magnesium alloy Corrosion fatigue Extension twins Secondary crack