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  • Articles  (42)
  • 1985-1989  (29)
  • 1975-1979  (13)
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  • 1
    Electronic Resource
    Electronic Resource
    An abortive (CH)12 synthesis. Cis-fused divinyl cyclopropanes which cannot cope (1977)
    s.l. : American Chemical Society
    The @journal of organic chemistry 42 (1977), S. 401-409 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00423a001
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  • 2
    Electronic Resource
    Electronic Resource
    Light-scattering observation of anomalous parametric spin-wave character in subsidiary absorption (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5477-5479 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The technique of Brillouin light scattering has been used for the characterization, in terms of wave number and direction of propagation, of parametric spin waves associated with subsidiary absorption in thin films of yttrium iron garnet. Measurements at 7.99, 8.47, and 9.90 GHz have revealed a spin-wave character consistent with theory, with two notable exceptions. First, the data show no evidence for a predicted flip in the azimuthal propagation angle. Second, the measured magnon wave numbers at high fields are inconsistent with the theoretical values. The wave number and polar angle results imply that the change to low-k spin waves is not a discontinuous transition as indicated by the model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342524
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  • 3
    Electronic Resource
    Electronic Resource
    Preludes to spin-wave chaos: Spin-wave instability processes, butterfly curves, kinks, flips, cusps, and shifts (invited) (abstract) (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5401-5401 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Manifestations of chaos1–3 above the threshold microwave field for spin-wave instability have brought this established topic in microwave magnetics back into vogue. This paper will review the nature of the instability onset and the factors which determine the variation of the threshold microwave field for instability (hcrit) with dc field, the so-called "butterfly curve.'' A key factor here is the wave-vector k dependence of the spin-wave linewidth ΔHk. This k dependence leads to abrupt shifts in the wave number k for the unstable modes from large values (105 cm−1) to small values (103 cm−1) and a characteristic "kink'' in the subsidiary absorption butterfly curve. Under certain circumstances, flips in the aximuthal spin-wave propagation angle are also predicted. Such flips show up experimentally in some of the expected circumstances, but not in others.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342382
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  • 4
    Electronic Resource
    Electronic Resource
    Effective linewidth measurements at 36 GHz in hexagonal and cubic ferrites (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 3353-3355 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Effective linewidth measurements at 36 GHz are reported for barium ferrite, several W-type single-crystal hexagonal ferrites, and for polycrystalline LiZn ferrite. In general, the effective linewidths for the W-type ferrites were relatively large—several hundred oersteds. Values of ΔHeff for the barium ferrite samples were tens of oersteds, similar to the ferromagnetic resonance (FMR) linewidths for these materials. The LiZn samples showed effective linewidths significantly below the FMR values. The results indicate that the two-magnon loss mechanism is the predominant factor in the polycrystalline LiZn, but contributes little to the ferromagnetic loss in single-crystal barium ferrite. The data for the W-type ferrites show that the intrinsic loss for these single-crystals is a significant part of the ferromagnetic resonance linewidth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340779
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  • 5
    Electronic Resource
    Electronic Resource
    AQUATIC TRANSPORT OF HEAVY METALS IN THE URBAN ENVIRONMENT (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 13 (1977), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : A study has been conducted for the past two years on a 4.6 mile stretch of the Saddle River near Lodi, New Jersey. The primary objectives of this study were two fold; initially, the amounts of various heavy metals being contributed to the Saddle River by stormwater runoff, rainfall, and individual tributaries, etc., were investigated to better delineate the distribution of various sources of heavy metals to the aquatic environment. Secondly, a series of benthal deposits from the Saddle River were analyzed to determine the fate of these metals once introduced into the receiving stream.A mass balance analysis of heavy metals in the Saddle River was performed to determine the amount of these materials contributed from unrecorded sources. The results of this study seemed to demonstrate the importance of considering the potential scouring of river sediments as a secondary source of metals in determinations of this type.The distribution of metals in precipitation samples collected in this study was found to be similar to that in runoff, with lead and zinc predominating. Relative concentrations of metals in precipitation as compared to those of stormwater were relatively insignificant. Metal concentrations of bottom sediments were found to vary considerably from sample to sample.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1977.tb02056.x
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  • 6
    Electronic Resource
    Electronic Resource
    THE IMPACT OF URBANIZATION ON THE DISTRIBUTION OF HEAVY METALS IN BOTTOM SEDIMENTS OF THE SADDLE RIVER (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 15 (1979), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : A three-year study has been conducted on a 4.6 mile stretch of the Saddle River near Lodi, New Jersey. The primary objectives of this investigation were (1) to provide baseline information on the concentration and distribution of heavy metals in bottom sediments of the Saddle River; (2) to qualitatively evaluate which parameters affect this distribution; and (3) to determine the effect of urbanization on the concentration and distribution of these materials. Significant enrichments of several heavy metals were observed in bottom sediments of the lower Saddle River near Lodi, New Jersey, as compared to the upper Saddle River. Attempts to correlate metal concentrations in bottom sediments with chemical-oxygen demand were not successful in demonstrating a relationship between these two factors. Metal concentrations were found to be strongly dependent upon particle size. In general, metal concentrations in bottom sediments increased with decreasing partical diameter. However, metals enrichment was observed to be considerably greater in the larger sediment fractions studied (〉420μ) than the smaller sediment fractions as one proceeded downstream through the urban area. Since the larger sediment fractions are least effected by scour and transport they may best reflect the effect of urbanization on the distribution of heavy metals over an extended period of time at a given location.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1979.tb00397.x
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  • 7
    Electronic Resource
    Electronic Resource
    Volatiles of wild blueberry, Vaccinium angustifolium: possible attractants for the blueberry maggot fruit fly, Rhagoletis mendax (1989)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 37 (1989), S. 232-233 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00085a053
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  • 8
    Electronic Resource
    Electronic Resource
    NATIONAL WATER-QUALITY ASSESSMENT: FUTURE DIRECTIONS OF THE U.S. GEOLOGICAL SURVEY (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 24 (1988), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1988.tb03032.x
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  • 9
    Electronic Resource
    Electronic Resource
    USE OF PARAMEDICAL PERSONNEL IN ROUTINE ANTIHYPERTENSIVE TREATMENT: DISCUSSION (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 304 (1978), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1978.tb25617.x
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  • 10
    Electronic Resource
    Electronic Resource
    Geometric applications of a matrix-searching algorithm (1987)
    Springer
    Algorithmica 2 (1987), S. 195-208 
    Details
    ISSN: 1432-0541
    Keywords: All-farthest neighbors ; Monotone matrix ; Convex polygon ; Wire routing ; Inscribed polygons ; Circumscribed polygons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract LetA be a matrix with real entries and letj(i) be the index of the leftmost column containing the maximum value in rowi ofA.A is said to bemonotone ifi 1 〉i 2 implies thatj(i 1) ≥J(i 2).A istotally monotone if all of its submatrices are monotone. We show that finding the maximum entry in each row of an arbitraryn xm monotone matrix requires Θ(m logn) time, whereas if the matrix is totally monotone the time is Θ(m) whenm≥n and is Θ(m(1 + log(n/m))) whenm〈n. The problem of finding the maximum value within each row of a totally monotone matrix arises in several geometric algorithms such as the all-farthest-neighbors problem for the vertices of a convex polygon. Previously only the property of monotonicity, not total monotonicity, had been used within these algorithms. We use the Θ(m) bound on finding the maxima of wide totally monotone matrices to speed up these algorithms by a factor of logn.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01840359
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