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pro vyhledávání: '"H. S. Parker"'
Autor:
H. S. Parker
Publikováno v:
Marine Biology. 63:309-318
In a series of multifactorial laboratory experiments, Ulva lactuca discs were grown in an apparatus in which they were exposed simultaneously to 3 simulated current speeds (7.5, 15, 22.5 cm s-1) and a still control, and either 3 ammonium concentratio
Publikováno v:
Journal of Dynamic Systems, Measurement, and Control. 103:308-316
Protype fluidic capillary pyrometers (FCP) were designed and fabricated to measure elevated temperatures for several field applications. The device utilizes a viscosity and, hence, temperature-sensitive fluid resistor or capillary tube as the sensing
Autor:
H. S. Parker
Publikováno v:
Marine Biology. 69:137-145
In a series of multifactorial laboratory experiments, Gracilaria tikvahiae apical segments were grown in an apparatus in which they were exposed simultaneously to 3 simulated current speeds (7.5, 15, 22.5 cm s-1) and a still control, and either 3 amm
Publikováno v:
Journal of the American Ceramic Society. 69:811-814
Phase equilibria in ternary systems involving BaO, TiO2, and the low melting oxides B2O3, V2O5, and Mo03 are reported. The low-temperature phases BaTi2O5 and BaTi5O11 were not obtained in equilibrium in any of the studied systems. It has been found t
Publikováno v:
Journal of Applied Crystallography. 6:482-486
The most commonly used geometry for the Berg–Barrett X-ray microscopy uses the zero-layer reflections as described by Newkirk. It can be shown that non-zero-layer reflections, skew-plane reflections, can be used equally well to obtain X-ray microgr
Publikováno v:
Physica Status Solidi (a). 25:69-76
The elastic constants Cij of single-crystal Cu2O measured to 3 kbar show linear variation with pressure. The best-fit values of the Cij and dCij/dP are: C11 = 1228.8, C44 = 121.0, C′ = (C11–C12)/2 = 81.9 kbar, dC11/dP = 3.62, dC44/dP = −0.69, a
Publikováno v:
Journal of Physics C: Solid State Physics. 11:35-44
Studies of the temperature dependence of the X-ray powder diffraction and single-crystal Raman spectra of Hg2Cl2 are reported for temperatures from 300K to below the phase transition at approximately 180K. From the X-ray data it is established that t
Publikováno v:
Journal of the American Ceramic Society. 43:641-647
Flexural strengths of specimens prepared from four uranium dioxide powders were determined at room temperature and at 1000°C. The relation of the strength (S) to porosity (P) and to grain size (G) could be represented by the expression S=kG−ae−b
Autor:
H. S. Parker, M. D. Burdick
Publikováno v:
Journal of the American Ceramic Society. 39:181-187
Fused uranium dioxide was separated into fractions of varying particle size by air separation. Specimens of the nominal size of 1/8 by 1/4 by 1½ in. were formed by hydrostatic pressing, firing, and lapping. Specimens prepared from the 0 to 5 μ frac
Autor:
C. A. Harding, H. S. Parker
Publikováno v:
Journal of the American Ceramic Society. 53:583-585
Bicrystals containing symmetrical tilt boundaries with either the or the direction as the rotation axis were vapor-grown at 1740°C using the reaction 2AlCl3(g)+3CO2(g) + 3H2(g)→.Al2O3(s) + 6HCl(g) + 3CO(g). Specimens as large as 3 by 5 by 20 mm we