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文章速递Painlevé property, local and nonlocal symmetries, and symmetry reductions for a (2+1)-dimensional integrable KdV equation 认领
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作者 王晓波 贾曼 楼森岳 《中国物理B:英文版》 SCIE EI CAS CSCD 2021年第1期178-184,共7页
The Painlevé property for a(2+1)-dimensional Korteweg–de Vries(KdV) extension, the combined KP3(Kadomtsev–Petviashvili) and KP4(cKP3-4), is proved by using Kruskal’s simplification. The truncated Painlevé... The Painlevé property for a(2+1)-dimensional Korteweg–de Vries(KdV) extension, the combined KP3(Kadomtsev–Petviashvili) and KP4(cKP3-4), is proved by using Kruskal’s simplification. The truncated Painlevé expansion is used to find the Schwartz form, the Bäcklund/Levi transformations, and the residual nonlocal symmetry. The residual symmetry is localized to find its finite Bäcklund transformation. The local point symmetries of the model constitute a centerless Kac–Moody–Virasoro algebra. The local point symmetries are used to find the related group-invariant reductions including a new Lax integrable model with a fourth-order spectral problem. The finite transformation theorem or the Lie point symmetry group is obtained by using a direct method. 展开更多
关键词 Painlevéproperty residual symmetry Schwartz form Bäcklund transforms D’Alembert waves symmetry reductions Kac–Moody–Virasoro algebra (2+1)-dimensional KdV equation
The vital point of the Parameters of Morpho-functional State of Gymnasts for the Assessment of Physical Development at the Stage of Sports Perfection 认领
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作者 Zakharyeva Natalia Nikolaevna 《中国经济评论:英文版》 2021年第2期56-65,共10页
The article presents the data of the assessment of the physical development and functional state of highly qualifiedgymnasts engaged in rhythmic gymnastics. It was found that high-skilled gymnasts have heterogeneity o... The article presents the data of the assessment of the physical development and functional state of highly qualifiedgymnasts engaged in rhythmic gymnastics. It was found that high-skilled gymnasts have heterogeneity ofsomatotypes determined according to the B. Heath-J. Carter scheme and heterogeneity of types of autonomousnervous regulation of heart rate variability, systolic, diastolic blood pressure and respiration, determined on thespiroarteriorhythmocardiograph device. Highly qualified gymnasts have vago- and normotonic types of regulationof heart rate variability;normal-sympathetic-and hypersympathicotonic types of regulation of the variability ofsystolic blood pressure and diastolic blood pressure, vagotonic type of regulation of the variability of the respiratoryrhythm. Statistically significant differences gymnasts, successful in the medal standings at the internationalcompetitions and gymnasts participating, but not in high prizes in competitions, consist in the ability to resistfatigue while performing strenuous mental work (differences were revealed in 10-letter “Mental performance” at aconstant speed (p > 0.0001), and 3-letter test (p > 0.001)), data stabilometric test “Target” indicator “Time stabilityon the left foot” (R > 0.039) with the advantage of a high performing gymnasts artists. Fleshed out the possibility ofusing the parameters of the morphofunctional state of gymnasts in training for the qualitative evaluation of thephysical development of gymnasts, evaluation set their sports uniforms indicated the possibility of developing thereference parameters of the morphofunctional status of gymnasts and recommendations on the frequency of thesurvey of morphological and functional status of gymnasts involved in rhythmic gymnastics. 展开更多
关键词 rhythmic gymnastics highly qualified athletes ANTHROPOMETRY SOMATOTYPE functional state sports form
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论意识形态的形式性构成及其辩证转换——齐泽克精神分析视域下的意识形态结构分析 认领
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作者 孔明安 谭勇 《四川大学学报:哲学社会科学版》 北大核心 2021年第1期38-44,共7页
意识形态与人的社会生活息息相关,需要重点关注。齐泽克在精神分析视域下对意识形态的形式性和现实性及其辩证关系进行了探讨。一方面,意识形态的重要特质就是其形式性,它包含三重结构:意识形态文本、意识形态内容以及意识形态幻象结构... 意识形态与人的社会生活息息相关,需要重点关注。齐泽克在精神分析视域下对意识形态的形式性和现实性及其辩证关系进行了探讨。一方面,意识形态的重要特质就是其形式性,它包含三重结构:意识形态文本、意识形态内容以及意识形态幻象结构社会现实时所遮掩了的实在界的内核。另一方面,意识形态的现实性也涉及三个维度:其一是意识形态通过意识形态幻象引导现实社会中人的行为而展现的现实性;其二是意识形态的实体化;其三是作为症候的意识形态。从面向变革社会现实这个维度看,意识形态的现实性更具基础性地位,同时,意识形态形式性和现实性在一定条件下是可以相互转换的。齐泽克关于意识形态的形式性和现实性辩证关系的探讨一定程度上丰富和拓展了马克思主义的意识形态理论。 展开更多
关键词 意识形态 形式性 现实性 意识形态幻象 齐泽克
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Unity of form and spirit in Huangdi Neijing 认领
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作者 Bo Liang Ning Gu 《医学史与医学哲学》 2021年第1期8-11,共4页
Traditional Chinese medicine has many core contents,one of which is the unity of form and spirit.To inherit and develop traditional Chinese medicine,we need to reexamine traditional Chinese medicine with philosophy an... Traditional Chinese medicine has many core contents,one of which is the unity of form and spirit.To inherit and develop traditional Chinese medicine,we need to reexamine traditional Chinese medicine with philosophy and medicine.Taking Huangdi Neijing as an example,we restudy the unity of form and spirit in traditional Chinese medicine from two aspects of medicine and philosophy. 展开更多
关键词 Huangdi Neijing Traditional Chinese medicine PHILOSOPHY Unity of form and spirit
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兽医社会化服务概念、含义及形态 认领
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作者 刘华 《畜牧兽医科学:电子版》 2021年第2期167-168,共2页
兽医社会化服务是兽医公益服务的重要组成,该种服务形式已经逐渐成为兽医市场化服务的主导力量,对推动畜牧养殖产业健康发展具有十分重要的作用。在很长一段时间内,我国兽医行业注重强调公共管理和公益性服务,对兽医社会化服务的重视程... 兽医社会化服务是兽医公益服务的重要组成,该种服务形式已经逐渐成为兽医市场化服务的主导力量,对推动畜牧养殖产业健康发展具有十分重要的作用。在很长一段时间内,我国兽医行业注重强调公共管理和公益性服务,对兽医社会化服务的重视程度不高,缺乏正确认知,造成整个服务体系建设存在明显滞后性。为更好地促进畜牧养殖产业健康发展,实现社会资源的有效整合有效配置,需要保证兽医社会化服务工作更加广泛的开展,进而向社会大众提供更加专业化、高效化的精准兽医服务。该文主要分析兽医社会化服务的必要性、概念和具体含义,论述兽医社会化服务的几种形态。 展开更多
关键词 兽医社会化服务 概念 含义 形态
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基于SPSS统计分析的河源客居形态研究 认领
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作者 杨鑫 汤朝晖 《小城镇建设》 2021年第3期89-98,共10页
广东省河源市辖五县一区,域内有东江自东北向西南流过,是客家先民最早的聚居地之一。通过调研河源境内五县一区的87座现存客家民居,对其地理区位、建筑体量、平面布局、结构形式进行数据的归纳和统计,借助统计学软件SPSS对其进行相关分... 广东省河源市辖五县一区,域内有东江自东北向西南流过,是客家先民最早的聚居地之一。通过调研河源境内五县一区的87座现存客家民居,对其地理区位、建筑体量、平面布局、结构形式进行数据的归纳和统计,借助统计学软件SPSS对其进行相关分析和描述性统计分析,把握河源客家民居的整体分布形态和规律;采用多元分析方法,借助SPSS对其进行聚类分析,将调研对象依据其变量特征进行归类,旨在对现存河源客居的保护和发展提供更为精准的策略依据,亦有助于当代客家民居的可持续适应性发展。 展开更多
关键词 河源客居 形态 SPSS统计分析
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九华山佛教寺院建筑特征初探 认领
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作者 牛婷婷 谢丹 《华中建筑》 2021年第1期123-127,共5页
佛教寺院建筑作为佛教传播与发展的物质载体,展现了建筑艺术与宗教文化的双重魅力。该文选取九华山现存的重点佛教寺院建筑为研究对象,从群体布局、方位朝向、接地方式、平面形制、立面形制五个方面整理分类,并挖掘影响其发展的相关因素... 佛教寺院建筑作为佛教传播与发展的物质载体,展现了建筑艺术与宗教文化的双重魅力。该文选取九华山现存的重点佛教寺院建筑为研究对象,从群体布局、方位朝向、接地方式、平面形制、立面形制五个方面整理分类,并挖掘影响其发展的相关因素,总结九华山佛教寺院建筑的普遍性特征及地域性特征,旨在把握该区佛教寺院建筑特征的规律,为相关研究提供参考。 展开更多
关键词 九华山 佛教寺院 建筑特征 布局 形制
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中式乡村民宿室内环境设计中的形与意 认领
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作者 范晶 都伟 《设计》 2021年第1期123-125,共3页
探讨具有独特中式美学的乡村民宿在环境设计中形式和意境上的塑造手法,为乡村民宿环境营造开拓新的设计思路。对比欧美日及我国乡村民宿的发展历史,并且结合土实际设计案例进行分析。得到乡村民宿室内环境设计的设计方法。中式乡村室内... 探讨具有独特中式美学的乡村民宿在环境设计中形式和意境上的塑造手法,为乡村民宿环境营造开拓新的设计思路。对比欧美日及我国乡村民宿的发展历史,并且结合土实际设计案例进行分析。得到乡村民宿室内环境设计的设计方法。中式乡村室内环境设计具有独特塑造手法和设计审美。 展开更多
关键词 乡村民宿 室内设计 环境设计 形式 意境
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“京剧服装”以“形”传“神”的美学艺术 认领
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作者 陈欣 张佳妮 《服装设计师》 2021年第2期135-138,共4页
京剧是我国的国粹,京剧服饰是京剧表演艺术的重要组成部分,本文以京剧服装形制为出发点,分析京剧服装款式对人物外在形象的塑造。在此基础.上深度探寻|其程式化、虚拟化、写意化的艺术特征对人物性格特征的描绘,突显其以“形”传“神”... 京剧是我国的国粹,京剧服饰是京剧表演艺术的重要组成部分,本文以京剧服装形制为出发点,分析京剧服装款式对人物外在形象的塑造。在此基础.上深度探寻|其程式化、虚拟化、写意化的艺术特征对人物性格特征的描绘,突显其以“形”传“神”的艺术效果。 展开更多
关键词 京剧 服装 形制 美学艺术
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A family of double-beauty tetraquarks:Axial-vector state T^-bb;us^- 认领
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作者 S.S.Agaev K.Azizi +1 位作者 B.Barsbay H.Sundu 《中国物理C:英文版》 SCIE CAS 2021年第1期67-81,共15页
The spectroscopic parameters and decay channels of the axial-vector tetraquark Tho(in what follows,TAV)are explored using the quantum chromodynamics(QCD)sum rule method.The mass and coupling of this state are calculat... The spectroscopic parameters and decay channels of the axial-vector tetraquark Tho(in what follows,TAV)are explored using the quantum chromodynamics(QCD)sum rule method.The mass and coupling of this state are calculated using two-point sum rules by taking into account various vacuum condensates,up to 10 dimensions.Our prediction for the mass of this state m=(10215±250)MeV confirms that it is stable with respect to strong and electromagnetic decays and can dissociate to conventional mesons only via weak transformations.We investigate the dominant semileptonic■and nonleptonic T AV b:s^-→v10 b:s^-M decays of T AV b:s^-.In these processes,Z-b:s^-is a scalar tetraquark[be][us^-]built of a colo-triplet diquark and an antidiquark,whereas M is one of the vector mesonsρ^-,K^*(892),D^*(2010)^-,and D^*s-.To caleulate the partial w idths of these decays,we use the QCD three-point sum rule approach and evaluate the weak transition form factors Gi(i=0,1,2,3),which govem these processes.The full widthΓfull=(12.9±2.1)×10^-8 MeV and the mean lifetimeτ=5.1+0.99-0.71 fs of the tetraquark TAV are computed us-ing the aforementioned weak decays.The obtained information about the parametersof TAY and Zh,is useful for experimental investigations of these double-heavy exotic mesons. 展开更多
关键词 EXOTICS TETRAQUARKS weak decay form factors
Effects of vector leptoquarks onΛb→Λ,lv^-l decay 认领
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作者 K.Azizi A.T.Olgun Z.Tavukoglu 《中国物理C:英文版》 SCIE CAS 2021年第1期144-154,共11页
Experimental data on R(D^(+)).R(K^(+)),and R(J/ψ),provided by different collaborations,show sizable deviations from the standard model predictions.To describe these anomalies,many new physics scenarios have been prop... Experimental data on R(D^(+)).R(K^(+)),and R(J/ψ),provided by different collaborations,show sizable deviations from the standard model predictions.To describe these anomalies,many new physics scenarios have been proposed.One of them is the leptoquark model,which introduces the simultaneous coupling of vector and scalar leptoquarks to quarks and leptons.To look for similar possible anomalies in the baryonic sector,we investigate the effects of a vector leptoquark U3(3,3,2/3)on various physical quantities related to the tree-levelΛb→Λclv^-l decays(l=u,t),which proceed via b→c l v^-l transiti ons at the quark level.We calculate the differential branching ratio,forward-backward asymmetry,and longitudinal polarizations of leptons and Ac baryons at theμandτlepton channels in the leptoquark model and compare their behavior to the predictions of the SM in terms of q^2.In the calculations,we use the form factors calculated in full QCD as the main input and account for all errors coming from the form factors and model parameters.We observe that at theτchanneL the Ra fit solution to data related to the leptoquark model sweeps some regions out of the SM band;nevertheless,the fit has a considerable intersection with the SM predictions.The Rr type solution gives roughly the same results as the SM on DBR(q^2)-q^2.At theμchannel.the leptoquark model gives results that are consistent with the SM predictions and existing experimental data on the behavior of DBR(q^2)with respect to q^2.Concerning the q^2 behavior of the AFB(q^2),the two types of fits forτand the predictions at the“channel in the leptoquark model give exactly the same results as the SM.We also investigate the behavior of the parameter R(q^2)with respect to q^2 and the value of R(Λc)in both the vector leptoquark and SM models.Both fit solutions lead to results that deviate considerably from the SM predictions for R(q^2)-q^2 and R(Ac).Future experimental data on R(q^2)-q^2 and RC made available by measurements of theΛb→Λcτv^-τchannel,will be parti 展开更多
关键词 new physics LEPTOQUARKS heavy baryons weak decay form factors
非直角之诗:奥斯卡·尼迈耶建筑形式类型化研究 认领
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作者 黄晓茵 李早 +1 位作者 邵玮 叶茂盛 《合肥工业大学学报:社会科学版》 2021年第1期123-129,共7页
奥斯卡·尼迈耶是巴西现代主义建筑师,其作品充满自由曲线却保持理性与纯粹,并传递出世界与本土的双相价值。文章从形式类型出发,探讨形式背后的建筑意义。围绕直角元素与非直角元素的使用,对尼迈耶30个建筑作品进行聚类分析,得到7... 奥斯卡·尼迈耶是巴西现代主义建筑师,其作品充满自由曲线却保持理性与纯粹,并传递出世界与本土的双相价值。文章从形式类型出发,探讨形式背后的建筑意义。围绕直角元素与非直角元素的使用,对尼迈耶30个建筑作品进行聚类分析,得到7种形式类型,接着对建筑类型子集的形式共性与子集内建筑个体特征展开分析,阐释形式的自由与纯粹这两种特质的图像基础与具体表现,最后将建筑类型子集与实践时间、功能性质进行关联分析,进而说明尼迈耶建筑所传达的世界性与地方性来源于现代主义与巴西本土美学的双重影响。 展开更多
关键词 奥斯卡·尼迈耶 形式 类型 现代主义 巴西美学
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Renewal of Urban Industrial Zone and Spatial Game in China:A Case Study of Chengdu Eastern Suburb Industrial Zone 认领
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作者 DENG Ke 《景观研究:英文版》 2021年第1期51-57,63,共8页
The change of system constantly reshapes the urban form of China after 1949,among which the renewal and transformation of industrial zones is a typical phenomenon in the changing process of urban landscape in recent y... The change of system constantly reshapes the urban form of China after 1949,among which the renewal and transformation of industrial zones is a typical phenomenon in the changing process of urban landscape in recent years,which centrally refl ects the development characteristics of contemporary Chinese cities under new social background.From the perspective of spatial game,this paper takes Chengdu Eastern Suburb Industrial Zone as an example,studies and interprets the changes of urban form and the causes of these changes in the renewal process of the industrial zone on the basis of the existing morphological frame and material landscapes,so then shows the particularity and complexity of the process of urban spatial reconstruction with current Chinese characteristics. 展开更多
关键词 Urban form Urban landscape Industrial zone renewal Spatial game Morphological frame
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Purely Inseparable Extensions and Ramification Filtrations 认领
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作者 Hao Yu HU 《数学学报:英文版》 SCIE 2021年第1期35-58,共24页
In this article,we investigate the shift of Abbes and Saito’s ramification filtrations of the absolute Galois group of a complete discrete valuation field of positive characteristic under a purely inseparable extensi... In this article,we investigate the shift of Abbes and Saito’s ramification filtrations of the absolute Galois group of a complete discrete valuation field of positive characteristic under a purely inseparable extension.We also study a functoriality property for characteristic forms. 展开更多
关键词 Abbes and Saito’s ramification filtration purely inseparable extension characteristic form
亚里士多德“形式”的美学意蕴探究 认领
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作者 曹晖 《学习与探索》 北大核心 2021年第2期139-145,176,共8页
在亚里士多德的哲学中,形式占有十分重要的地位。形式是事物的本体,它既指称普遍,又意味着个体。形式也是本质,即"是其所是";形式是现实,而质料是潜能。亚里士多德将动态性和功能性赋予形式,使其具有"实现"的意义... 在亚里士多德的哲学中,形式占有十分重要的地位。形式是事物的本体,它既指称普遍,又意味着个体。形式也是本质,即"是其所是";形式是现实,而质料是潜能。亚里士多德将动态性和功能性赋予形式,使其具有"实现"的意义。其形式的美学内蕴在于以下几个方面,即形式是感觉和认知的中介、是一种"中间性"因素、是个体性和普遍性的结合、是一种不断的实现活动等。亚里士多德的形式理论以其丰富性、多样性和深刻性不断迸发着鲜活的生命力,对后世美学产生了极大的影响。 展开更多
关键词 亚里士多德 形式 本体 普遍 个体 美学意蕴
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浅析足球边后卫的进攻方式 认领
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作者 连文冲 任延东 《当代体育科技》 2021年第1期33-35,共3页
该文运用文献资料、录像观察、数据统计法,对2018年第21届俄罗斯世界杯决赛阶段淘汰赛中四强球队边后卫的进攻方式进行了研究与分析,结果显示:现阶段,竞技水平较高的足球球队边后卫的进攻方式主要是采用前场插上进攻、中后场长传进攻和... 该文运用文献资料、录像观察、数据统计法,对2018年第21届俄罗斯世界杯决赛阶段淘汰赛中四强球队边后卫的进攻方式进行了研究与分析,结果显示:现阶段,竞技水平较高的足球球队边后卫的进攻方式主要是采用前场插上进攻、中后场长传进攻和利用定位球进行进攻,并且进攻时机的把握也越来越恰当,创造出大量的进攻机会与得分机会,已然成为球队进攻的重要一环。通过了解世界杯赛场上边后卫的进攻方式表现,有利于把握当今现代足球边后卫的进攻战术趋势,丰富进攻战术体系。 展开更多
关键词 足球 边后卫 进攻 方式
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隐蔽的原则:激进的形式与玛丽安·摩尔式的颠覆 认领
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作者 何庆机 《外国文学》 北大核心 2021年第1期49-59,共11页
美国现代主义诗人玛丽安·摩尔诗歌形式的激进与内容的保守长期以来被认为是一对无解的矛盾。本文首先通过诗歌文本分析,挖掘诗人"隐蔽的原则"观,同时结合阿多诺和伊格尔顿关于诗歌形式的论述,说明摩尔诗歌的这一矛盾在... 美国现代主义诗人玛丽安·摩尔诗歌形式的激进与内容的保守长期以来被认为是一对无解的矛盾。本文首先通过诗歌文本分析,挖掘诗人"隐蔽的原则"观,同时结合阿多诺和伊格尔顿关于诗歌形式的论述,说明摩尔诗歌的这一矛盾在理论上是伪矛盾。在此基础上,本文试图挖掘出诗歌中隐蔽的女性声音,这种声音或隐蔽于激进的形式之下成为消失的声音,或融合于摩尔式的复调中,其诗歌的颠覆性也因此处于被掩饰状态。本文认为,摩尔以其独特的陌生化手法,将诗歌中"隐蔽的原则"潜藏起来,而读者必须要有对应的陌生化阅读方式进行解读和阐释。同时,本文认为摩尔式的颠覆乃有限性颠覆,而不是后现代式的颠覆;这种颠覆又与其诗歌形式特点相吻合。 展开更多
关键词 玛丽安·摩尔 形式 颠覆 隐蔽的原则
清代斗篷探微 认领
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作者 苑媛 《纺织报告》 2021年第1期124-128,共5页
“斗篷”是明清时期,尤其是在清朝流行的用于秋冬御寒的服饰之一。文章通过对明清文学作品的梳理以及对相关图片和实物的整理,尝试从服饰文化的角度,对“斗篷”这一服饰的缘起、形制、颜色、材质、穿戴方式等方面及其穿戴的人群、阶层... “斗篷”是明清时期,尤其是在清朝流行的用于秋冬御寒的服饰之一。文章通过对明清文学作品的梳理以及对相关图片和实物的整理,尝试从服饰文化的角度,对“斗篷”这一服饰的缘起、形制、颜色、材质、穿戴方式等方面及其穿戴的人群、阶层等进行阐释和考察。 展开更多
关键词 清代 斗篷 文学作品 形制 颜色 穿着阶层
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A two-dimensional limit equilibrium computer code for analysis of complex toppling slope failures 认领
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作者 Akbar Ardestani Mehdi Amini Kamran Esmaeili 《岩石力学与岩土工程学报:英文版》 SCIE 2021年第1期114-130,共17页
Evaluation of blocky or layered rock slopes against toppling failures has remained of great concern for engineers in various rock mechanics projects.Several step-by-step analytical solutions have been developed for an... Evaluation of blocky or layered rock slopes against toppling failures has remained of great concern for engineers in various rock mechanics projects.Several step-by-step analytical solutions have been developed for analyzing these types of slope failures.However,manual application of these analytical solutions for real case studies can be time-consuming,complicated,and in certain cases even impossible.This study will first examine existing methods for toppling failure analyses that are reviewed,modified and generalized to consider the effects of a wide range of external and dead loads on slope stability.Next,based on the generalized presented formulae,a Windows form computer code is programmed using Visual C#for analysis of common types of toppling failures.Input parameters,including slope geometry,joint sets parameters,rock and soil properties,ground water level,dynamic loads,support anchor loads as well as magnitudes and forms of external forces,are first loaded into the code.The input data are then saved and used to graphically draw the slope model.This is followed by automatic identification of the toppling failure mode and a deterministic analysis of the slope stability against this failure mode.The results are presented using a graphical approach.The developed code allows probabilistic introduction of the input parameters via probability distribution functions(PDFs)and thus a probabilistic analysis of the toppling failure modes using Monte-Carlo simulation technique.This allows calculation of the probability of slope failure.Finally,several published case studies and typical examples are analyzed with the developed code.The outcomes are compared with those of the main references to assess the performance and robustness of the developed computer code.The comparisons demonstrate good agreement between the results. 展开更多
关键词 Rock slope Toppling failures Analytical solution Windows form application Deterministic analysis Probabilistic analysis
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Are the release characteristics of Erzhi pills in line with traditional Chinese medicine theory?A quantitative study 认领
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作者 Jie-yu Zuo Chulhun Park +1 位作者 Michael Doschak Raimar Lobenberg 《结合医学学报:英文版》 SCIE CAS 2021年第1期50-55,共6页
Objective:Traditional Chinese medicine(TCM)has been widely used throughout China to prevent and cure diseases for thousands of years,and now it is a part of the integrative medicine field that is available in Western ... Objective:Traditional Chinese medicine(TCM)has been widely used throughout China to prevent and cure diseases for thousands of years,and now it is a part of the integrative medicine field that is available in Western societies.To ensure the safety and quality of the herbal medicines that are a major part of the TCM tradition,they must be held to modern pharmaceutical standards.Erzhi pill(EZP)is a Chinese Pharmacopeia-listed herbal preparation that is used in the long-term clinical management of postmenopausal symptoms,osteoporosis and menstrual disorders.Until now,whether the drug release mechanism of EZP is in line with its intended TCM usage has not been studied.Methods:The release of specnuezhenide from three EZPs(self-made,Leiyunshang and Renhe)in simulated gastric fluid(SGF),acetate buffer(p H 4.5 buffer)and simulated intestinal fluid(SIF)was investigated in a dissolution test.The water uptake capacity and erosion extent of the three EZPs were investigated using swelling and erosion studies.The drug release mechanism was further assessed through statistical model fitting,using DDSolver software.Results:The release of specnuezhenide from all three EZPs in SGF was less than 50%within a 4 h period.However,over 70%of the specnuezhenide was released from each EZP in both p H 4.5 buffer and SIF in the same time.Analysis of the swelling and erosion behaviors and the drug release mechanism of the three EZPs confirmed that the release rate from EZP followed a sustained release profile,which was an interactive combination of swelling and erosion.Conclusion:This study showed that the release pattern from the pills was in line with the intended TCM use of EZP.TCM had not only theoretically considered sustained release from the pills,but also formulated them to achieve this release pattern.When establishing quality control standards for pills,the theoretical TCM usage and the actual release patterns need to be considered. 展开更多
关键词 Traditional Chinese medicine Dosage form Herbal preparation DISSOLUTION Drug release mechanism Erzhi pill
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