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  • 1995-1999  (3)
  • 1998  (3)
  • African-American archaeology  (1)
  • Cavitation  (1)
  • Engineering  (1)
  • Malondialdehyde
Materialart
Erscheinungszeitraum
  • 1995-1999  (3)
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    International journal of historical archaeology 2 (1998), S. 133-160 
    ISSN: 1573-7748
    Schlagwort(e): African-American archaeology ; southern New England ; theories of resistance
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Klassische Archäologie
    Notizen: Abstract Scholarship concerning the lives of enslaved African Americans in southern New England has shifted rapidly from outdated models of acculturation to conflict-driven models of domination and resistance. With the assumption of conflict as the outcome of all power relations, both economic production and historical contextuality have been overlooked, with slavery systems in New England simply equated with other regions of the Atlantic world, rather than compared and contrasted. This essay reconsiders contests over power in seventeenth- and eighteenth-century New England. Drawing on the work of Greene (1966), Piersen (1988), and others, I argue that the system of slavery in the region may represent an anomalous case in terms of the means of control or the means of resistance. By examining demographic patterns, economic production, and agricultural landscapes in Rhode Island's East Bay, I argue that there may be more to be learned from William D. Piersen's (1988, p. 143) concept of “resistant accommodation” as a middle ground between the two extremes of the theoretical spectrum. The essay concludes with suggestions for further research on the archaeology of African-American lives in the region.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1573-0603
    Schlagwort(e): Cavitation ; Cell injury ; Shock wave lithotripsy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Increased ambient pressure (excess hydrostatic pressure) was used to regulate cavitation in the aqueous media surrounding isolated red blood cells and aluminum foils used as targets in studies of the mechanisms of shock wave (SW) damage in shock wave lithotripsy (SWL). Foils or cells were placed in a cylindrical chamber (bronze-aluminum alloy) connected to a regulator and nitrogen source. The ends of the cylinder were capped with planar, plastic plates 12.7 mm thick. Tests performed with a PVDF membrane hydrophone showed that SW's passed through the plastic without significant loss of amplitude or change in waveform. Pitting of foils, a form of damage that can only be due to cavitation, was eliminated by very high (∼70 atm) added pressure. It took substantially greater added pressure to reduce damage to foils than has been reported to reduce damage to cells, suggesting differences in how cavitation is regulated in bulk fluid versus a solid surface. This report describes the design of the pressure chamber used in these studies and explains how SW exposures of isolated cells and foil targets were performed.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 42 (1998), S. 1215-1229 
    ISSN: 0029-5981
    Schlagwort(e): boundary element method ; fast multipole method ; many-particle problem ; linear elasticity ; iterative solution strategy ; Engineering ; Numerical Methods and Modeling
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Mathematik , Technik allgemein
    Notizen: A boundary element method for solving three-dimensional linear elasticity problems that involve a large number of particles embedded in a binder is introduced. The proposed method relies on an iterative solution strategy in which matrix-vector multiplication is performed with the fast multipole method. As a result the method is capable of solving problems with N unknowns using only O(N) memory and O(N) operations. Results are given for problems with hundreds of particles in which N=O(105). © 1998 John Wiley & Sons, Ltd.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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