通过对乙型肝炎病毒外膜大蛋白(Hepatitis B virus large surface protein,HBV-LP)结构、功能的阐述,分析其检测技术的发展历程,让临床医生更深层次的了解其临床意义,为今后广泛的应用于临床做好铺垫。HBV基因组的S区分为preS1、preS2和...通过对乙型肝炎病毒外膜大蛋白(Hepatitis B virus large surface protein,HBV-LP)结构、功能的阐述,分析其检测技术的发展历程,让临床医生更深层次的了解其临床意义,为今后广泛的应用于临床做好铺垫。HBV基因组的S区分为preS1、preS2和S基因3段。HBV-LP即由S、Pre-S1及Pre-S2基因区所编码。大蛋白的前S区具有独特的立体构象拓扑结构,是HBV-LP发挥多种功能作用的依赖性结构。拓扑结构决定其具有反式激活作用。在HBV DNA阴性的患者中,HBV-LP阳性可能是肝内病毒继续复制和抗病毒治疗不彻底的标志。使用酶联免疫定量方法检测HBV-LP与HBV DNA的检测有良好一致性,是反映HBV复制活跃的可靠指标,可以作为HBV感染、复制和乙肝患者诊断、治疗和预后的重要标志物,具有较高的临床应用价值。展开更多
The author constructs a family of manifolds, one for each n ≥ 2, having a nontrivial Massey n-product in their cohomology for any given n. These manifolds turn out to be smooth closed 2-connected manifolds with a com...The author constructs a family of manifolds, one for each n ≥ 2, having a nontrivial Massey n-product in their cohomology for any given n. These manifolds turn out to be smooth closed 2-connected manifolds with a compact torus Tm-action called momentangle manifolds ZP, whose orbit spaces are simple n-dimensional polytopes P obtained from an n-cube by a sequence of truncations of faces of codimension 2 only(2-truncated cubes). Moreover, the polytopes P are flag nestohedra but not graph-associahedra. The author also describes the numbers β^(-i,2(i+1))(Q) for an associahedron Q in terms of its graph structure and relates it to the structure of the loop homology(Pontryagin algebra)H_*(?ZQ), and then studies higher Massey products in H*(ZQ) for a graph-associahedron Q.展开更多
Generalized hypercubes （denoted by Q（d1,d2,... ,dn）） is an important network topology for parallel processing computer systems. Some methods of forming big cycle from small cycles and links have been developed. Ba...Generalized hypercubes （denoted by Q（d1,d2,... ,dn）） is an important network topology for parallel processing computer systems. Some methods of forming big cycle from small cycles and links have been developed. Basing on which, we has proved that in generalized hypercubes, every edge can be contained on a cycle of every length from 3 to IV（G）I inclusive and all kinds of length cycles have been constructed. The edgepanciclieity and node-pancilicity of generalized hypercubes can be applied in the topology design of computer networks to improve the network performance.展开更多
文摘通过对乙型肝炎病毒外膜大蛋白(Hepatitis B virus large surface protein,HBV-LP)结构、功能的阐述,分析其检测技术的发展历程,让临床医生更深层次的了解其临床意义,为今后广泛的应用于临床做好铺垫。HBV基因组的S区分为preS1、preS2和S基因3段。HBV-LP即由S、Pre-S1及Pre-S2基因区所编码。大蛋白的前S区具有独特的立体构象拓扑结构,是HBV-LP发挥多种功能作用的依赖性结构。拓扑结构决定其具有反式激活作用。在HBV DNA阴性的患者中,HBV-LP阳性可能是肝内病毒继续复制和抗病毒治疗不彻底的标志。使用酶联免疫定量方法检测HBV-LP与HBV DNA的检测有良好一致性,是反映HBV复制活跃的可靠指标,可以作为HBV感染、复制和乙肝患者诊断、治疗和预后的重要标志物,具有较高的临床应用价值。
基金supported by the General Financial Grant from the China Postdoctoral Science Foundation(No.2016M601486)
文摘The author constructs a family of manifolds, one for each n ≥ 2, having a nontrivial Massey n-product in their cohomology for any given n. These manifolds turn out to be smooth closed 2-connected manifolds with a compact torus Tm-action called momentangle manifolds ZP, whose orbit spaces are simple n-dimensional polytopes P obtained from an n-cube by a sequence of truncations of faces of codimension 2 only(2-truncated cubes). Moreover, the polytopes P are flag nestohedra but not graph-associahedra. The author also describes the numbers β^(-i,2(i+1))(Q) for an associahedron Q in terms of its graph structure and relates it to the structure of the loop homology(Pontryagin algebra)H_*(?ZQ), and then studies higher Massey products in H*(ZQ) for a graph-associahedron Q.
基金This project is supported by National Natural Science Foundation of China （10671081）
文摘Generalized hypercubes （denoted by Q（d1,d2,... ,dn）） is an important network topology for parallel processing computer systems. Some methods of forming big cycle from small cycles and links have been developed. Basing on which, we has proved that in generalized hypercubes, every edge can be contained on a cycle of every length from 3 to IV（G）I inclusive and all kinds of length cycles have been constructed. The edgepanciclieity and node-pancilicity of generalized hypercubes can be applied in the topology design of computer networks to improve the network performance.
