目的基于CiteSpace软件对国内外黄芪多糖相关研究的文献进行分析,探究黄芪多糖研究领域相关热点及发展趋势。方法检索中国知网(CNKI)及Web of Science 2012年1月1日-2022年12月31日收录的有关黄芪多糖研究相关文献,运用CiteSpace6.1.R6...目的基于CiteSpace软件对国内外黄芪多糖相关研究的文献进行分析,探究黄芪多糖研究领域相关热点及发展趋势。方法检索中国知网(CNKI)及Web of Science 2012年1月1日-2022年12月31日收录的有关黄芪多糖研究相关文献,运用CiteSpace6.1.R6软件,对文献年度发文量、作者、机构、国家、关键词共现、关键词聚类、关键词突现等内容进行分析。结果共纳入文献1782篇,其中中文文献1284篇、英文文献498篇。中文文献发文量趋于平稳,英文文献发文量呈上升趋势;中、英文文献发文量最多的作者分别是刘永琦和Yang Xiaojun,并以各自为中心形成了紧密的研究团队;黄芪多糖中、英文文献发文量前10位的机构均为国内机构,甘肃中医药大学和Nanjing Agr Univ Coll Vet Med分别是中、英文发文最多的机构,机构间未形成较紧密的合作关系;中国是英文文献发文量最多的国家,与较多国家存在合作关系;关键词分析显示黄芪多糖的研究主要集中在免疫调节、抗氧化、细胞凋亡及调节肠道微环境等方面。结论本研究揭示了黄芪多糖的研究热点及趋势,有关黄芪多糖的抗肿瘤、抗氧化及调节肠道微生物菌群及其具体机制的研究或将受到更多学者的关注。展开更多
We study the consistency conditions of the generalized f （ R） gravity by extending f （ R） gravity with non-minimal coupling to the generalized f（R） with arbitrary geometry-matter coupling. Specifically, we discu...We study the consistency conditions of the generalized f （ R） gravity by extending f （ R） gravity with non-minimal coupling to the generalized f（R） with arbitrary geometry-matter coupling. Specifically, we discuss the two particular models of generalized f（R） by means of consistency conditions. It is found that the second model is not physically viable so as to be ruled out. Moreover, we further constrain the first model using the Dolgov- Kawasaki stability criterion, and give the value ranges of the parameters in the first model It is worth stressing that our results include the ones in f（R） gravity with non-minimal coupling as the special case of Q（Lm） = Lm.展开更多
The time-dependent wave packet propagation method was applied to investigate the dynamic behaviours of the reaction S-(^(2)P)+H_(2)(^(1)∑_(g)^(+))→SH-(^(1)∑)+H(^(2)S)based on the electronic ground state(^(2)A′)pot...The time-dependent wave packet propagation method was applied to investigate the dynamic behaviours of the reaction S-(^(2)P)+H_(2)(^(1)∑_(g)^(+))→SH-(^(1)∑)+H(^(2)S)based on the electronic ground state(^(2)A′)potential energy surface of the SH_(2)-ionic molecule.The collision energy dependent reaction probabilities and integral cross sections are obtained.The numerical results suggest that there are significant oscillation structures over all the studied range of the collision energies.The vibrational excitation and rotational excitation of the diatomic reagent H_(2) promote the reactivity significantly as suggested by the numerical total reaction probabilities with the initial rotational quantum number of j=0,2,4,6,8,10,and the vibrational quantum number v=0,1,2,3,4.The numerical integral cross sections are quite consistent with the experimental data reported in previous work.展开更多
文摘目的基于CiteSpace软件对国内外黄芪多糖相关研究的文献进行分析,探究黄芪多糖研究领域相关热点及发展趋势。方法检索中国知网(CNKI)及Web of Science 2012年1月1日-2022年12月31日收录的有关黄芪多糖研究相关文献,运用CiteSpace6.1.R6软件,对文献年度发文量、作者、机构、国家、关键词共现、关键词聚类、关键词突现等内容进行分析。结果共纳入文献1782篇,其中中文文献1284篇、英文文献498篇。中文文献发文量趋于平稳,英文文献发文量呈上升趋势;中、英文文献发文量最多的作者分别是刘永琦和Yang Xiaojun,并以各自为中心形成了紧密的研究团队;黄芪多糖中、英文文献发文量前10位的机构均为国内机构,甘肃中医药大学和Nanjing Agr Univ Coll Vet Med分别是中、英文发文最多的机构,机构间未形成较紧密的合作关系;中国是英文文献发文量最多的国家,与较多国家存在合作关系;关键词分析显示黄芪多糖的研究主要集中在免疫调节、抗氧化、细胞凋亡及调节肠道微环境等方面。结论本研究揭示了黄芪多糖的研究热点及趋势,有关黄芪多糖的抗肿瘤、抗氧化及调节肠道微生物菌群及其具体机制的研究或将受到更多学者的关注。
基金Supported by the National Natural Science Foundation of China under Grant Nos 11175077,11575075 and 11547156the Joint Specialized Research Fund for the Doctoral Program of Higher Education of Ministry of Education of China under Grant No 20122136110002+1 种基金the Open Project Program of State Key Laboratory of Theoretical Physics of Institute of Theoretical Physics under Grant No Y4KF101CJ1the Project of Key Discipline of Theoretical Physics of Department of Education in Liaoning Province under Grant Nos 905035 and 905061
文摘We study the consistency conditions of the generalized f （ R） gravity by extending f （ R） gravity with non-minimal coupling to the generalized f（R） with arbitrary geometry-matter coupling. Specifically, we discuss the two particular models of generalized f（R） by means of consistency conditions. It is found that the second model is not physically viable so as to be ruled out. Moreover, we further constrain the first model using the Dolgov- Kawasaki stability criterion, and give the value ranges of the parameters in the first model It is worth stressing that our results include the ones in f（R） gravity with non-minimal coupling as the special case of Q（Lm） = Lm.
基金supported by Liao Ning Revitalization Talents Program(No.XLYC2007094)the Liaoning Bai Qian Wan Talents Program,the Natural Science Foundation of Liaoning Province(No.2020-BS083)the National Natural Science Foundation of China(No.11874241)。
文摘The time-dependent wave packet propagation method was applied to investigate the dynamic behaviours of the reaction S-(^(2)P)+H_(2)(^(1)∑_(g)^(+))→SH-(^(1)∑)+H(^(2)S)based on the electronic ground state(^(2)A′)potential energy surface of the SH_(2)-ionic molecule.The collision energy dependent reaction probabilities and integral cross sections are obtained.The numerical results suggest that there are significant oscillation structures over all the studied range of the collision energies.The vibrational excitation and rotational excitation of the diatomic reagent H_(2) promote the reactivity significantly as suggested by the numerical total reaction probabilities with the initial rotational quantum number of j=0,2,4,6,8,10,and the vibrational quantum number v=0,1,2,3,4.The numerical integral cross sections are quite consistent with the experimental data reported in previous work.
