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Energy flux and waveform of gravitational wave generated by coalescing slow-spinning binary system in effective one-body theory

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Science China(Physics,Mechanics & Astronomy) 2024年

作者： weike deng Sheng Long Jiliang Jing Department of Physics Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Educationand Synergetic Innovation Center for Quantum Effects and Applications Hunan Normal University Center for Gravitation and Cosmology College of Physical Science and Technology Yangzhou University

We extend our research on the energy flux and waveform characteristics of gravitational waves generated by merging nonspinning binary black holes through self-consistent effective one-body theory to include binary systems with slowly spinning black ***, we decompose the equation for the null tetrad component of the gravitationally perturbed Weyl tensor ψB4into radial and angular parts, leveraging the second-order approximation of the rotation parameter a. Subsequently, we derive an analytical solution for the radial equation and observe that our results are contingent upon the parameters a2, a3, and a, which represent the second-and third-order correction parameters, respectively. Ultimately, we calculate the energy flux, the radiation-reaction force and the waveform for the “plus” and “cross” modes of the gravitational waves generated by merging slowly spinning binary black holes.

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Self-consistent effective-one-body theory for spinning binaries based on post-Minkowskian approximation

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Science China(Physics,Mechanics & Astronomy) 2023年第7期66卷 17-28页

作者： Jiliang Jing weike deng Sheng Long Jieci Wang Department of Physics Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Educationand Synergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 4100821China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China

This study extends the research on the self-consistent effective-one-body theory of a real spinless two-body system based on the post-Minkowskian approximation(***.65,100411(2022))to the case of a binary system for the spinning black *** effective rotating metric and an improved Hamiltonian for the spinning black hole binaries are *** decoupled equation for the null tetrad component of the gravitational perturbed Weyl tensorψ4B in the effective rotating spacetime is found with the help of the gauge transform characteristics of the Weyl *** decoupled equation is then separated between radial and angular variables in the slowly rotating background spacetime,and a formal solution of ψ_(4)^(B) is *** this basis,the formal expressions of the radiation reaction force and the waveform for the“plus”and“cross”modes of the gravitational wave are *** results,obtained in the same effective spacetime,constitute a self-consistent effective-one-body theory for the spinning black hole binaries based on the post-Minkowskian approximation.

关键词： real spin two-body system decoupled equation with separable variables forψ_(4)^(B) ffective-one-body theory

New self-consistent effective one-body theory for spinless binaries based on the post-Minkowskian approximation

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Science China(Physics,Mechanics & Astronomy) 2022年第10期65卷 38-44页

作者： Jiliang Jing Sheng Long weike deng Mengjie Wang Jieci Wang Department of Physics Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Educationand Synergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 410081China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China

The effective one-body theories, introduced by Buonanno and Damour, are novel approaches to constructing a gravitational waveform template. By taking a gauge in which ψ_(1)^(B) and ψ_(3)^(B) vanish, we find a decoupled equation with separable variables for ψ_(4)^(B) in the effective metric obtained in the post-Minkowskian approximation. Furthermore, we set up a new self-consistent effective one-body theory for spinless binaries, which can be applicable to any post-Minkowskian orders. This theory not only releases the assumption that v/c should be a small quantity but also resolves the contradiction that the Hamiltonian, radiation-reaction force, and waveform are constructed from different physical models in the effective one-body theory with the post-Newtonian approximation. Compared with our previous theory [Sci. China-Phys. Mech. Astron. 65, 260411(2022)], the computational effort for the radiation-reaction force and waveform in this new theory will be tremendously reduced.

关键词： Hamilton equations coalescing compact object binary system self-consistent effective one-body theory

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模块化方形零件全自动双边倒角机的设计

机床与液压 2014年第10期42卷 50-53页

作者：肖似蹼刘志辉邓维克邵阳学院机械与能源工程系湖南邵阳422000

方形零件,手工双边倒角效率低、一致性差,采用模块化设计方法研制的方形零件双边自动倒角机,可以实现一定尺寸范围内方形零件双边自动倒角,能调整刀具位置从而方便调节工件的双边倒角量,实现倒角一致性。介绍了方形零件双边自动倒角机... 详细信息

方形零件,手工双边倒角效率低、一致性差,采用模块化设计方法研制的方形零件双边自动倒角机,可以实现一定尺寸范围内方形零件双边自动倒角,能调整刀具位置从而方便调节工件的双边倒角量,实现倒角一致性。介绍了方形零件双边自动倒角机系统组成及模块划分,倒角机的动作方案和一些关键零部件的设计。通过对样机进行试验,能到达预期效果。

关键词：方形零件双边自动倒角机模块化设计

Inactivated H9N2 vaccines developed with early strains do not protect against recent H9N2 viruses:Call for a change in H9N2 control policy

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Journal of Integrative Agriculture 2024年第6期23卷 2144-2148页

作者： Yanjing Liu Qingqing Yu Xiangyu Zhou Wenxin Li Xinwen He Yan Wang Guohua deng Jianzhong Shi Guobin Tian Xianying Zeng Hualan Chen College of Veterinary Medicine Gansu Agricultural UniversityLanzhou 730070China State Key Laboratory for Animal Disease Control and Prevention Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry DiseasesMinistry of Agriculture and Rural Affairs/Harbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin 150009China National Poultry Laboratory Animal Resource Center Harbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin 150009China Harbin weike Biotechnology Co. Ltd.Harbin 150009China

H9N2 virus has been widely distributed in wild birds and poultry around the world since its first emergence in the United States of America in 1966(Gu et al.2017;Carnaccini and Perez 2020).The virus appeared in chickens in China in the early 1990s,and over the last two decades has gradually become the dominant epidemic subtype(Sun and Liu 2015;Bi et al.2020).Although H9N2 virus infection alone cannot cause severe disease or death in poultry,H9N2 virus-infected birds experience a degree of egg production drop and can be easily infected by other pathogens,thus causing economic losses for poultry industry.

关键词： H9N2 poultry policy

基于GPU的并行克里格及其在储量估算中的应用

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北京师范大学学报（自然科学版） 2017年第2期53卷 155-158页

作者：杨昭颖邓维科张光妲余先川北京师范大学信息科学与技术学院北京100875 齐齐哈尔大学现代教育技术中心黑龙江齐齐哈尔161006

克里格法是空间信息统计学中最主要和最基本的一种局部估计方法,利用区域化变量的空间分布特征实现对未知区域的估计.针对克里格算法高时间复杂度问题,提出一种基于GPU的并行克里格算法,实现对克里格插值算法的改进,在精度不降低的情况... 详细信息

克里格法是空间信息统计学中最主要和最基本的一种局部估计方法,利用区域化变量的空间分布特征实现对未知区域的估计.针对克里格算法高时间复杂度问题,提出一种基于GPU的并行克里格算法,实现对克里格插值算法的改进,在精度不降低的情况下很好地解决了克里格算法高时间复杂度的问题.西藏甲码铜资源量估算结果表明,并行克里格方法具有良好的加速比与并行计算效率,验证了该方法的可实践性,与纯CPU计算的对比实验验证了GPU并行计算结果的正确性与可信度.

关键词：克里格插值 GPU 并行计算储量估算

工艺参数对压铸AZ91-RE合金组织及性能的影响

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特种铸造及有色合金 2018年第4期38卷 356-358页

作者：苏再军杨树忠普健邓维克袁明邵阳学院机械与能源工程学院湖南工业大学机械工程学院赣州有色冶金研究所湖北工程学院化学与材料科学学院

采用正交试验,研究了压铸温度、模具温度和压射速度等工艺参数对高强耐热压铸AZ91-0.5Nd-0.3Y-0.3La合金显微组织与力学性能的影响。结果表明,压铸工艺参数对合金力学性能的影响由大到小依次为:压铸温度、模具温度和压射速度。最佳压铸... 详细信息

采用正交试验,研究了压铸温度、模具温度和压射速度等工艺参数对高强耐热压铸AZ91-0.5Nd-0.3Y-0.3La合金显微组织与力学性能的影响。结果表明,压铸工艺参数对合金力学性能的影响由大到小依次为:压铸温度、模具温度和压射速度。最佳压铸工艺方案:压铸温度为685℃,模具温度为240℃,压射速度为4.0m/s。在此压铸工艺参数下,合金的抗拉强度、屈服强度、伸长率分别达到292 MPa、186 MPa、9.7%。

关键词： AZ91-Nd-Y-La合金压铸显微组织力学性能

贵州省兴义市野生药用植物资源多样性与综合价值评价

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贵州农业科学 2024年第5期52卷 94-100页

作者：邓桃周涛邓朝义张成刚江维克仁寿县中医医院四川眉山620500 贵州中医药大学贵州贵阳550025 贵州黔西南喀斯特区域发展研究院贵州兴义562400

【目的】探明贵州省兴义市野生药用植物资源的多样性与综合开发利用价值,为当地药用植物资源开发和可持续利用提供参考。【方法】以代表区域-样方调查法结合文献资料分析兴义市野生药用植物资源的多样性和野生重点药用植物的综合开发利... 详细信息

【目的】探明贵州省兴义市野生药用植物资源的多样性与综合开发利用价值,为当地药用植物资源开发和可持续利用提供参考。【方法】以代表区域-样方调查法结合文献资料分析兴义市野生药用植物资源的多样性和野生重点药用植物的综合开发利用价值。【结果】兴义市野生药用植物有150科456属690种,主要由单种科(55科)、小型科(43科)和中型科(34科)组成;以多年生草本植物最多(250种),占该区域物种总种数的36.23%,灌木(180种)其次,占26.07%;入药部位以根及根茎类(270种)和全草类(177种)为主,分别占入药总种数的43.83%和28.73%;有蕴藏量的药用植物有18科24属26种,野生重点药用植物总蕴藏量约6008.64 t,其中,女贞子的蕴藏量最大,其后依次是石韦、豨莶草、千里光、白茅根和首乌藤等。《国家重点保护野生植物名录》收录一级保护植物4种(银杏、苏铁、红豆杉和水杉),二级保护植物19种(金钗石斛、闽楠和珍珠矮等),但其中有蕴藏量的只有银杏;综合价值(CVMP)高的物种有银杏、杜仲、厚朴和苍耳子等8种,CVMP较高的物种有女贞子、石韦、白茅根和首乌藤等11种。【结论】兴义市野生药用植物资源多样性丰富、综合价值总体较高。建议对综合价值较高的重点品种进行有计划的恢复与利用;加强濒危药材的品种选育,建立基因库和种源基地。

关键词：野生药用植物中药资源调查多样性综合价值兴义贵州

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脐橙自动去皮机的研制

中国农机化学报 2015年第5期36卷 134-137页

作者：邓维克刘志辉邵阳学院机械与能源工程系湖南邵阳422000 中南大学机电工程学院长沙市410012

为提高脐橙自动去皮效率,满足脐橙深加工需求,以Pro/e等三维软件为设计手段,基于可编程控制器技术成功研制了一种脐橙自动去皮机。本文主要根据拟定的自动去皮机方案对自动去皮机的具体结构设计进行详细介绍,并通过样机试切发现,自动去... 详细信息

为提高脐橙自动去皮效率,满足脐橙深加工需求,以Pro/e等三维软件为设计手段,基于可编程控制器技术成功研制了一种脐橙自动去皮机。本文主要根据拟定的自动去皮机方案对自动去皮机的具体结构设计进行详细介绍,并通过样机试切发现,自动去皮机的去皮效率为25.7个每分钟,破损率低于3%。

关键词：脐橙自动去皮机方案结构工作流程关键参数