Results 221 to 230 of about 516,029 (259)
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Annals of Physics, 1976
Different definitions of the reaction matrix G appropriate to the calculation of nuclear structure are reviewed and discussed. Qualitative physical arguments are presented in support of a two-step calculation of the G-matrix for finite nuclei. In the first step the high-energy excitations are included using orthogonalized plane-wave intermediate states,
E.M. Krenciglowa +3 more
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Different definitions of the reaction matrix G appropriate to the calculation of nuclear structure are reviewed and discussed. Qualitative physical arguments are presented in support of a two-step calculation of the G-matrix for finite nuclei. In the first step the high-energy excitations are included using orthogonalized plane-wave intermediate states,
E.M. Krenciglowa +3 more
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Nuclear matrix-associated regions
1997Abstract Eukaryotic interphase chromosomes are thought to be organized in topologically independent loop domains. Such loops can be visualized emanating from permeabilized nuclei after extraction of histone proteins (Vogelstein et al. 1980; Jackson et al. 1984; Gerdes et al. 1994).
Luderus, M.E.E., van Driel, R.
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Thinking about a nuclear matrix
Journal of Molecular Biology, 1998The possible existence in eukaryotic cells of an internal, non-chromatin nuclear structural framework that facilitates gene readout as a set of spatially concerted reactions has become a popular but controversial theater of investigation. This article endeavors to present a circumspect review of the nuclear matrix concept as we presently know it ...
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Journal of Cellular Biochemistry, 1997
Nuclear matrix (NM) plays a role of fundamental structural and functional significance as the site of replication, transcription, and RNA processing and transport, acting as an anchor or attachment site for a variety of enzymes and other proteins involved in these activities.
S, Tawfic +4 more
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Nuclear matrix (NM) plays a role of fundamental structural and functional significance as the site of replication, transcription, and RNA processing and transport, acting as an anchor or attachment site for a variety of enzymes and other proteins involved in these activities.
S, Tawfic +4 more
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Nuclear Matrix and the Cell Cycle
1996The facts that the nuclear matrix represents a structural framework of the cell nucleus and that nuclear events, such as DNA replication, transcription, and DNA repair, are associated with this skeletal structure suggest that its components are subject to cell cycle-regulatory mechanisms. Cell cycle regulation has been shown for nuclear lamina assembly
P, Loidl, A, Eberharter
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Density matrix of relativistic nuclear matter
Physical Review C, 1991We investigate the structure of the density matrix of relativistic nuclear matter at large momentum ({ital k}{much gt}{ital k}{sub {ital F}}) making use of the {sigma}+{omega} model of Walecka. The density matrix may be written in terms of spinors describing nucleons of modified mass and also has exotic components that contain spinors describing ...
, Cruz-Barrios +3 more
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Association Of Rna With The Cytoskeleton And The Nuclear Matrix
Journal of Cell Science, 1986ABSTRACT Heteronuciear RNA (hnRNA) is preferentially associated (76%) with the nuclear matrix in mammalian cells. Active mRNA, in the form of polyribosomes, is associated (>97%) with the cytoskeletal framework. In this report, we present evidence that the association of both hnRNA and mRNA with structural networks of the cell may ...
E G, Fey, D A, Ornelles, S, Penman
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The nuclear matrix of Euglena gracilis (Euglenophyta): A stage of nuclear matrix evolution?
Biology of the Cell, 2000Summary— Euglena gracilis cell was extracted sequentially with CSK‐Triton buffer, RSB‐Magik solution and DNase‐As solution. DGD embedment‐free electron microscopy showed that in the extracted nucleus there was a residual non‐chromatin fibrous network. That it could not be removed by hot trichloroacetic acid further supported the idea that it was a non ...
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The channels model of nuclear matrix structure
BioEssays, 1995AbstractThe specificity of eukaryotic DNA organization into loops fixed to the nuclear matrix/chromosomal scaffold has been studied for more than fifteen years. The results and conclusions of different authors remain, however, controversial. Recently, we have elaborated a new approach to the study of chromosomal DNA loops.
S V, Razin, I I, Gromova
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The R-matrix Method in Nuclear Astrophysics
EAS Publications Series, 2007We present a short overview of the R-matrix method in nuclear physics, with emphasis on nuclear astrophysics. The method can be applied in two ways: solving the Schrodinger equation for scattering states, or fitting experimental cross sections. Both variants are presented in a common framework. The method is illustrated with the α + α scattering, and
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