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  • 1
    Electronic Resource
    Electronic Resource
    Transparent metals preparation and characterization of light-transmitting platinum films (1985)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 89 (1985), S. 4444-4452 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100267a010
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  • 2
    Electronic Resource
    Electronic Resource
    Design of potent cyclic gonadotropin releasing hormone antagonists (1988)
    s.l. : American Chemical Society
    Journal of medicinal chemistry 31 (1988), S. 677-682 
    Details
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jm00398a030
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  • 3
    Electronic Resource
    Electronic Resource
    Microstructurally engineered, optically transmissive, electrically conductive metal films (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 60 (1986), S. 3028-3034 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Using standard multilayer and effective medium models, we determine microstructures that optimize the near-IR-visible normal-incidence optical transmittance of electrically conducting metal films intended for use as semitransparent contacts for semiconductor devices such as photodetectors or photoelectrochemical converters. Various conditions are considered, including unpolarized and linearly polarized light and electrical conduction both parallel and perpendicular to the surface. For linearly polarized light, the optimum microstructure consists of parallel metal lines of nominally square cross section oriented perpendicular to the polarization vector of the incident light, regardless of the direction of electrical conduction. The line separation and cross-sectional dimensions must both be small compared to the wavelength λ. For unpolarized radiation, the optimum microstructure depends on the direction of electrical conduction. For conduction parallel to the surface, the optimum microstructure again consists of parallel lines with the lines oriented perpendicular to the residual linear polarization, if any, of the incident flux. For conduction perpendicular to the surface, the optimum microstructure consists of cylindrical metal posts of dimension small compared to λ. Expressions are derived that allow the thicknesses and refractive indices of protective antireflection coatings to be calculated to first order in the thicknesses of the metal films. The more general case of antireflection coatings for anisotropic structures is briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337757
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  • 4
    Electronic Resource
    Electronic Resource
    The spectrum of highly ionized praseodymium and dysprosium from the Texas tokamak plasma in the 50–250-A(ring) range (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 59 (1986), S. 3644-3649 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Spectra of highly ionized praseodymium and dysprosium recorded from the Texas tokamak (TEXT) plasma have been analyzed in the 50–250-A(ring) range. The spectra contain high-intensity continuum bands in the region below 100 A(ring) and bright individual lines above this wavelength. Lines of highly ionized praseodymium and dysprosium have been identified. The highest ionization state reached in the 1-keV central electron temperature tokamak plasma was Cu i-like Pr xxxi. The composition of the bands is explained in terms of a new theoretical approach developed to treat large unresolved transition arrays. The brightness of the continuum is compared with that of intense spectral lines emitted in the same wavelength range.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.336744
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  • 5
    Electronic Resource
    Electronic Resource
    Remanent fields and critical currents in Tl2 Ba2Ca2Cu3Ox ceramic (1989)
    Springer
    Applied physics 49 (1989), S. 325-329 
    Details
    ISSN: 1432-0630
    Keywords: 74.60 ; 74.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The temperature and magnetic-field dependences of the remanent magnetization have been determined from far-field measurements for thallium ceramic samples. The current flow that gives rise to the observed magnetization is intragranular. The results are consistent with flux-creep-controlled transport with a distance between pinning centers of ∼- 1/2/μm. Using near-field measurements, the superconducting properties are found to be heterogeneous on a scale of ≫ 1 mm. Magnetic domains have been induced by pplying spatial variation in the applied field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00616862
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  • 6
    Electronic Resource
    Electronic Resource
    Resource partitioning by reef corals as determined from stable isotope composition (1989)
    Springer
    Marine biology 100 (1989), S. 185-193 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The pattern of resource partitioning vs depth by corals collected in February 1983 from Jamaica and the Red Sea was determined from their stable carbon isotope composition. Observations were made on isolated zooxanthellae and corresponding algae-free animal tissue from eight species at four depths over a 50 m bathymetric range. Zooxanthellae δ13C was high in shallow water and became lower as depth increased. This trend correlated significantly with the anual integrated photosynthetic rate. The trend is interpreted according to a “depletion-diffusion” hypothesis; in shallow water, at high rates of photosynthesis, metabolic CO2 is nearly depleted and the supply of CO2 from seawater bicarbonate is limited by diffusion. Since most of the available CO2 is fixed, isotope fractionation is minimal. In deeper water, at lower rates of photosynthesis, metabolic CO2 is ample, and isotope fractionation is greater. Animal tissue δ13C was slightly lower than corresponding zooxanthellae values in shallow water. As depth increased the difference between zooxanthellae and animal tissue δ13C increased and the latter approached the δ13C of oceanic particulate organic carbon. These data suggest that carbon is translocated at all depths and that deep-water corals draw significantly on allocthonous sources of carbon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00391957
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  • 7
    Electronic Resource
    Electronic Resource
    Light absorption and utilization among hermatypic corals: a study in Jamaica, West Indies (1987)
    Springer
    Marine biology 96 (1987), S. 283-292 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The chlorophyll specific absorption coefficient ( $$\bar k$$ c) was measured for zooxanthellae from six hermatypic coral species obtained, where possible, from four depths (1, 10, 30, 50 m) on reef sites near Discovery Bay, Jamaica in February and March 1983. Measurements of photosynthetic rates versus irradiance, as well as cellular and areal chlorophyll a, were also performed on these colonies or sister colonies. Together the data were used to compare minimum quantum requirements (1/Φ m) among species and depths and to assess the importance of light utilization to the growth and depth distribution of these corals. Our data suggest that, although $$\bar k$$ c was found to decrease with depth, interspecific differences in $$\bar k$$ c do not occur for zooxanthellae from the corals investigated. Minimum quantum requirements (1/Φ m) decreased significantly with depth, thereby reflecting an increase in photosynthetic light utilization efficiency with decreasing irradiance. Interspecific differences in 1/Φ m determinations were suggested but not statistically conclusive. We conclude that interspecific differences in gross photosynthesis, and perhaps growth and depth distribution, are primarily attributable to differences in the light utilization capacity of the whole coral, as reflected by the product of $$\bar k$$ c ′ and chlorophyll per unit surface area, and in-situ quantum efficiencies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00427028
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  • 8
    Electronic Resource
    Electronic Resource
    Response of cowpea to variations in planting density and nutrient level (1989)
    Springer
    Plant and soil 116 (1989), S. 183-190 
    Details
    ISSN: 1573-5036
    Keywords: cowpea ; plant biomass ; plant density ; plant mineral nutrition ; response ; Vigna unguiculata
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A greenhouse study was carried out using cowpea (Vigna unguiculata (L.) Walp.) grown in Perlite® and inoculated with Nitragin® to investigate the concentration of plant nutrients and planting density required for optimum biomass production. Five concentrations (full, 0.5, 0.2, 0.1 and 0.05 strength) of Bisseling's nutrient solution and five planting densities (one to five plants per pot) were tested in a factorial randomized Graeco-Latin square design. Growth was determined as fresh and dry weights of leaves, stems, petioles, roots, flowers and pods, and whole plant. Optimum biomass production was found at 0.5 strength nutrient solution and a density of one plant per pot. Plants were more sensitive to higher planting density than to alterations of nutrient level. Over a twenty-fold range of nutrient supply, whole plant biomass yield varied at most by 44%, whereas increasing planting density from one to five plants per pot decreased biomass production by as much as 77%. There is a decrease in the shoot/root ratio as nutrient level decreases. The data suggests a potential for higher seed production at the higher densities and lowest nutrient levels, but this data was inconclusive.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02214546
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  • 9
    Electronic Resource
    Electronic Resource
    A model (WHTROOT) which synchronizes root growth and development with shoot development for winter wheat (1986)
    Springer
    Plant and soil 92 (1986), S. 133-145 
    Details
    ISSN: 1573-5036
    Keywords: Development ; Model ; Root ; Shoot ; Thermal time ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A model has been developed of root growth in winter wheat based on cumulative thermal time with description of the extension and branching of individual age classes of seminal and crown root axes. The model requires, as input, the sowing date and average monthly mean air temperatures and gives, as output, the maximum depth of penetration of each age class of root and the root length density or root weight in any 10 cm layer of soil contributed by main axes, first-order and second-order laterals on any calendar date. The impact of soil temperature on root length density distributions with time was assessed by comparing a warm site (Perth, Australia) with a cool site (Rothamsted Experimental Station, England). Simulated values of root length density for plants with six leaves were consistently high when soil temperature was held constant at 10°C, but variable soil temperatures at each site resulted in rooting profiles characteristic for the two sites, although root length densities were larger than commonly observed at either location. The model simulates well described sequences of root production and permits calculation of maximal root development rates for unstressed plants growing in moist soil with no mechanical impedance to growth. It allows the co-development of root and shoot to be modelled and since it uses only about 5 K bytes of computer memory could be easily used for the assessment of management practices in the field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02372274
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  • 10
    Electronic Resource
    Electronic Resource
    A survey of computational efforts in the field of corrosion engineering (1986)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 23 (1986), S. 1295-1311 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: This paper discusses a mathematical model governing the galvanic corrosion phenomenon and surveys the research efforts which have been applied to find a solution to the above problem. The authors classify these techniques into three categories. The first is the finite difference method (FDM), the second is the finite element method (FEM) and the last is the boundary element method (BEM).
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620230708
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