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  • 1
    Electronic Resource
    Electronic Resource
    Activation field, fatigue, and waiting-time effects in KNO3 thin-film memories (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 62 (1987), S. 4510-4513 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: By analyzing current transient data i(t) from KNO3 thin-film memories in terms of the Ishibashi–Takagi parametrization of the Avrami theory, we have been able to extract detailed information concerning the presence of an activation field (and the absence of a threshold), the relationship between characteristic switching time and spontaneous polarization when both are decreased either by increasing temperature or by repetitive read-write cycles (fatigue), and the behavior of switching kinetics as a function of the delay after application of a dc bias field ("waiting-time'').
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.339041
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  • 2
    Electronic Resource
    Electronic Resource
    Switching kinetics in KNO3 ferroelectric thin-film memories (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 5467-5470 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The time dependence of the current transient i(t) produced by the reversal of domains in ferroelectric potassium nitrate thin-film memories of 75–300 nm is analyzed as a function of temperature and of thickness using the Avrami theory. For all the films the kinetics confirm the low-dimensional nature of the system
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.338237
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  • 3
    Electronic Resource
    Electronic Resource
    Alternatives to the Euler and Navier–Stokes equations for monatomic gases (1986)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 29 (1986), S. 3631-3634 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The Chapman–Enskog approximation scheme is not uniformly convergent because it does not approximate sufficiently the behavior of molecules in the high-speed tail of a distribution. Asymptotic analysis of the binary collision term in the Boltzmann equation is used to show that collisions involving high-speed molecules can redistribute molecules within an energy level more easily than between levels. Chapman–Enskog theory is reformulated by assuming near equilibrium, only within each energy level, instead of over all energy levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.865792
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  • 4
    Electronic Resource
    Electronic Resource
    Witches' broom disease on cocoa in Rondonia, Brazil: pod infection in relation to pod susceptibility, wetness, inoculum, and phytosanitation (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 36 (1987), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Infection of cocoa pods by Crinipellis perniciosa was examined in the field in relation to pod susceptibility and variations in inoculum and climate over 2 years. The disease was incubated for 13 or 14 weeks in pods inoculated when 2 and 4 weeks old, and for 12 weeks in pods inoculated 6-12 weeks old. Pods were uniformly susceptible to natural infection during the 12 weeks after pollination. Over 75% of rain showers started between 12.00 and 02.00 h, providing sufficient water to rehydrate basidiocarps as well as to wet pods. Pods remained wet after rainfall for decreasing periods when rain occurred after 13.00 h. Incidence of pod disease was shown to be related to the number of wetness periods longer than 4 h, and to the number of open turgid basidiocarps occurring 12 weeks earlier. Wetness periods had a greater influence on disease. Pod infection was modelled by assuming that infection was limited by either wetness periods or turgid basidiocarp numbers; critical numbers of wetness periods when both factors were of equal weight were defined by an exponential equation. The model was used to predict reductions in pod disease associated with different amounts of broom removal in each year.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1987.tb02268.x
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  • 5
    Electronic Resource
    Electronic Resource
    Calcium and Human Large-Bowel Motility (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 560 (1989), 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.1749-6632.1989.tb24133.x
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  • 6
    Electronic Resource
    Electronic Resource
    A model of drop size distribution for a system with evaporation (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 8 (1985), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract. The size and shape of drops on leaf surfaces strongly affect their persistence. The relationship between volume and exposed surface area of drops on wheat leaves and the log-normal drop size distribution in a wheat canopy after rain are used to derive equations to describe how the total volume and drop number change with evaporation. Firstly, the behaviour of a single drop as it evaporates is considered and then equations describing the change in a population of drops with an initial log-normal distribution are derived. The time taken for all the drops to reach complete dryness is about thirty times that for the same volume of water spread uniformly over the surface with the same potential evaporation rate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1365-3040.ep11604646
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  • 7
    Electronic Resource
    Electronic Resource
    The energy balance of water drops on a leaf surface (1985)
    Springer
    Boundary layer meteorology 32 (1985), S. 337-349 
    Details
    ISSN: 1573-1472
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The amount of heat conducted to an isolated drop of water on a leaf is described by an equation which includes an effective thermal conductivity coefficient. Measurements of the dimensions of water drops on a horizontal wheat leaf give relationships which allow the volume and exposed surface areas to be obtained from drop diameter. These relationships are used in the experimental determination of the drop boundary-layer resistance and the effective thermal conductivity coefficient for drops on a leaf in a chamber. The boundary-layer resistance of the drop appeared to be independent of drop size and the mean value was about 60% of that for one side of the leaf. For drops with diameters less than 1 mm, conduction of heat to the drop reduced the leaf-to-drop temperature difference by over 50% of the value expected without conduction. Conduction of heat to drops will significantly affect the evaporation rate of surface water from cereal canopies after rain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00121999
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  • 8
    Electronic Resource
    Electronic Resource
    Evaporation from rain drops on leaves in a cereal canopy: A simulation model (1986)
    Springer
    Boundary layer meteorology 36 (1986), S. 39-51 
    Details
    ISSN: 1573-1472
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract In crop canopies, the persistence of discrete water drops on leaves after rain is of particular importance to the epidemiology of certain foliar pathogens. A model is described which simulates the heat and water vapour fluxes in a plant canopy and includes evaporation from water drops on the leaves. Energy balance equations allow for heat conducted to drops from the adjacent leaf tissue. Preliminary field tests of model performance for winter wheat, which compare predicted and visually assessed leaf wetness, are encouraging.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00117457
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of moving mean covariance adjustments on error and genetic variance estimates and selection of superior lines in peanuts (Arachis hypogaeal L.) (1986)
    Springer
    Euphytica 35 (1986), S. 185-192 
    Details
    ISSN: 1573-5060
    Keywords: Arachis hypogaea ; peanut ; groundnut ; randomized complete block design ; moving mean covariance ; simple matching coefficient ; error variance ; genetic variance ; selection ; kernel yield
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Effects of moving mean covariance adjustments on error control, genetic variance component estimates and selection were examined in nine trails in peanut breeding nurseries. Neighbourhood sizes of two to fourteen adjacent plots were used in two types of moving mean covariates: one based on adjacent plot yields and a second based on adjacent plot residuals after removal of replicate and treatment effects. Both covariate types reduced error variance, in one trial by up to 57%, although the covariate type giving the most error reduction varied among trials. Generally most error variance reduction occurred when six to eight adjacent plots were used. In some trials genetic variance component estimates following covariance adjustment were higher than those from unadjusted analyses and in other trials they were lower. As the neighbourhood size included in the moving mean increased from two to fourteen plots the genetic variance component estimate changed considerably in some trials. However, large rank changes did not appear to be associated with these genetic variance component changes as neighbourhood size had little influence on the selection of progenies. Also, genetic effects included in the yield covariate had little influence on selection of elite lines as essentially the same lines were chosen or rejected when residual covariates lacking these genetic effects wre used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00028556
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  • 10
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    Efficient Tn10 transposition into a DNA insertion hot spot in vivo requires the 5-methyl groups of symmetrically disposed thymines within the hot-spot consensus sequence. (1987)
    National Academy of Sciences
    Details
    Publication Date: 1987-11-01
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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