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  • 1
    Electronic Resource
    Electronic Resource
    Second generation U.S. rail transit systems: Prospects and perils (1980)
    Springer
    Transportation 9 (1980), S. 17-32 
    Details
    ISSN: 1572-9435
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Abstract So far in the decade of the 1970's, commitments have been made to construct a “second generation” of new rail systems in four urban areas — Atlanta, Baltimore, Miami and Buffalo. In this paper the authors speculate on the prospects and perils that lie ahead for these systems in the context of national and local expectations for rail transit and the experience of the first generation rail transit systems of San Francisco (BART) and Washington.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00147815
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  • 2
    Electronic Resource
    Electronic Resource
    The effect of additives on the morphology of zinc electrodeposited from a zinc chloride electrolyte at high current densities (1981)
    Springer
    Journal of applied electrochemistry 11 (1981), S. 677-683 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract There are advantages if zinc can be deposited electrochemically at high current densities. In order to improve the deposit at current densities exceeding 2000 Am−2, various additions were made to the electrolyte. It was found that proteinous additives produced planar deposits with a (10.2) (10.3) orientation and a current efficiency of around 85% in a small laboratory cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615170
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  • 3
    Electronic Resource
    Electronic Resource
    The strategic transportation research study — Its origins and purposes (1984)
    Springer
    Transportation 12 (1984), S. 195-209 
    Details
    ISSN: 1572-9435
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Abstract The highway industry in the United States spends about $35 to $40 billion annually. Management of the industry is almost wholly decentralized. This decentralization plus diminishing fuel tax revenues used to finance road improvements have caused road research efforts to decline to a very low level. Comparisons between funds for highway research and those spent by private firms in similar industries show that private firms spend from 5 to 12 times the rate of highway agencies. The problem of how much to spend on research is difficult both for private-sector and for public-sector enterprises. The level of research spending is shown to correlate well with both profitability and growth in U.S. firms. Four methods used for making research decisions in the private sector are discussed. The goals of the Strategic Transportation Research Study (STRS), which is being conducted by the Transportation Research Board to examine highway and transportation needs, are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00146941
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  • 4
    Electronic Resource
    Electronic Resource
    The conductivity of aqueous zinc chloride solutions (1982)
    Springer
    Journal of applied electrochemistry 12 (1982), S. 1-5 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The conductivity of aqueous zinc chloride reaches a maximum of 10.7 Ω−1 m−1 at 3.7 M ZnCl2. Measurements on chlorinated ZnCl2 showed that at low chlorine concentrations, the conductivity increased linearly with the square root of the chlorine concentration. The increase was due to the three species: dissolved chlorine, Cl 3 − and HClO. Ammonium chloride additions increased the conductivity of aqueous zinc chloride substantially.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01112058
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  • 5
    Electronic Resource
    Electronic Resource
    Preparation of a human lung purified plasma membrane fraction: Confirmation by enzyme markers, electron microscopy, and histamine H1 receptor binding (1984)
    Springer
    The journal of membrane biology 79 (1984), S. 33-39 
    Details
    ISSN: 1432-1424
    Keywords: plasma membrane ; lung ; histamine receptors ; 5′ nucleotidase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary A simple and rapid method of isolating plasma membranes from human peripheral lung tissue is described. The method involves homogenization of tissue in 0.25m sucrose-buffered medium followed by differential and sucrose density gradient centrifugation. Enzymatic and morphological characterization of the plasma membrane fraction revealed minimal contamination by nonplasma membrane fragments. The isolated plasma membranes showed an 18-fold purification of 5′-nucleotidase activity compared to the original homogenate. Electronmicroscopic studies of the plasma membrane fraction revealed the presence of small membrane vesicles having a trilaminar membrane structure. To further examine the purity of the plasma membrane preparation, the binding of the H1 receptor antagonist,3H pyrilamine, to the plasma membrane-enriched fraction was compared to the binding to crude membrane preparations. Both the plasma membrane-enriched fraction and the crude membrane preparation had similar Kd's for the histamine antagonist, but the plasma membrane-enriched fraction had a threefold greater binding capacity, reflecting the relative enrichment of plasma membranes of the preparation. Thus, a method has been developed for the isolation of plasma membranes from human peripheral lung which should provide material for a variety of biochemical and pharmacological studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01868524
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