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  • Cell & Developmental Biology  (2)
  • ASTROPHYSICS  (1)
  • Biogeochemistry
  • Electronic structure and strongly correlated systems
  • 2015-2019
  • 1990-1994  (3)
  • 1992  (3)
Collection
Keywords
Publisher
Years
  • 2015-2019
  • 1990-1994  (3)
Year
  • 1
    Electronic Resource
    Electronic Resource
    A shell of F-actin surrounds the branched nuclei of silk gland cells (1992)
    New York, NY : Wiley-Blackwell
    Cell Motility and the Cytoskeleton 23 (1992), S. 169-187 
    Details
    ISSN: 0886-1544
    Keywords: nuclear actin ; nuclear myosin ; nuclear shell ; nuclear shape ; nuclear matrix ; silk gland ; nuclear structure ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The branched nuclei from silk gland cells of larvae of Calpodes ethlius label with antibodies to actin and myosin and with rhodaminyl-phalloin, which is specific for f-actin. Optical sectioning localizes this actin and myosin to the nuclear periphery. Residual nuclear-associated fractions prepared from these cells contain sheets of nuclear lamina-like structures that bind heavy meromyosin and gold-tagged antibodies to actin and myosin. The results suggest that both actin and myosin, or a myosin-like protein, are components of a layer at the nucleocytoplasmic boundary that we call the nuclear shell. The nuclear shell appears to be associated with the nuclear envelope and may correspond to a zone on the cytoplasmic face of the envelope seen in electron micrographs of unextracted cells. The residual nuclear-associated fraction has a unique isoform of actin (43 kD, pl 6.45) that might allow the nuclei to associate with an actin network structurally and developmentally distinct from that of the cytoplasm. © 1992 Wiley-Liss, Inc.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cm.970230302
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The redeployment of F-actin in silk glands during moulting (1992)
    New York, NY : Wiley-Blackwell
    Cell Motility and the Cytoskeleton 21 (1992), S. 101-110 
    Details
    ISSN: 0886-1544
    Keywords: F-actin ; silk gland ; phalloin ; periluminal circumferential actin bundles ; actin-coated vacuoles ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Labeling of silk glands with rhodaminyl-phalloin shows that most F-actin is restricted to parallel bundles that form rings around the gland lumen at the apical cell surface. The bundles are lost when larval feeding stops at moulting, and the F-actin is redistributed through the cytoplasm as coats to vacuoles and, occasionally, in variably oriented strands. After moulting there is a return to the distribution of filamentous actin in the apical periluminal rings of bundles. These events occur at the same time as F-actin in the nuclear shell [Henderson and Locke, submitted] undergoes its own set of changes. In silk gland cells two kinds of f-actin deployment take place concurrently.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cm.970210203
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Crab pulsar giant pulses: Simultaneous radio and GRO observations (1992)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Observations are reported of the Crab pulsar made at radio frequencies concurrent with Oriented Scintillation Spectrometer Experiment (OSSE) observations from 15 to 27 May 1991. Using the 43 m telescope at Green Bank at 0.8 and 1.4 GHz, samples were made continuously for 10 hrs/day at intervals of 100 to 300 microsecs. The analysis of the radio data includes calculation of histograms of pulse intensities, absolute timing to about 20 microsec precision, and characterization of intensity variations on time scales from the 33 ms spin period to days. The most detailed analysis is presented made of giant pulses. The ultimate goal is to bin the radio data into giant and nongiant pulses and to form average waveforms of OSSE data for the corresponding pulse periods. A test is done to see whether the violet radio fluctuations (which are not seen in other radio pulsars to the same degree) are correlated with low energy gamma rays, yielding constraints on the radio coherence mechanism and the steadiness of the electron-positron outflow in the magnetosphere. Timing analysis of the radio data provides a well defined ephemeris over the specified range of epochs. The gamma ray pulse phase was predicted with an error of less than 70 microsecs.
    Keywords: ASTROPHYSICS
    Type: NASA. Goddard Space Flight Center, The Compton Observatory Science Workshop; p 260-266
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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