Materials Literature
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The one-dimensional motion of a planar gas bubble, the axially symmetric motion of a cylindrical bubble, and the spherically symmetric motion of a spherical bubble in a liquid are considered. Following J. B. Keller and I. I. Kolodner [J. Appl. Phys. 27, 1152–1161 (1956)], the velocity potential in the liquid is assume…
Setsuro EBASHI; Separation of Troponin into Its Three Components*, The Journal of Biochemistry, Volume 72, Issue 3, 1 September 1972, Pages 787–790, https:
The fracture surface energies of 5 polycrystalline silicon carbides were measured at room temperature using the double‐cantilever‐beam, notched‐beam, and work‐of‐fracture methods. All methods yielded comparable fracture surface energies,
The defect structure of monoclinic ZrO 2 was studied by measuring the transfer numbers and electrical conductivity as functions of O 2 pressure and temperature. The data suggest a defect structure of doubly ionized oxygen vacancies at low pressures, i.e. <10 −19 atm, and singly ionized oxygen interstitials at press…
Flow rates through gun perforations calculated for radial-flow conditions and confirmed in laboratory tests indicated perforation efficiencies substantially lower than those observed in API RP 43 tests with linear-flow test targets. Observed perforation efficiencies were also strongly influenced by differential pressu…
Larvae of the brachiopod Terebratalia transversa Sowerby have 2 bundles of setae on each side of their mantle lobe. Each seta grows out of a follicle of epidermal cells. The cisternae and associated vesicles of the Golgi bodies in lateral follicular cells are filled with electron dense material. The basal follicular c…
Abstract An apparatus was constructed which would allow vinyl‐type monomers (and others) to polymerize at ambient temperatures in the presence of an inductively coupled RF field. The details of the construction of the system are reported along with preliminary results obtained from nine monomers: styrene, methylvinyld…
The radiance N, resulting from an initially narrow collimated beam, propagating in the ocean, is investigated with the aid of the small-angle-scattering theory of electron scattering. The resulting expression for N is calculated approximately and compared both with experiments and numerical calculations. Various prope…
The magnetocrystalline symmetry and the Curie temperature of six families of quasi-binary rare earth-cobalt-iron intermetallic phases were studied. Investigated were the phases R2(Co1-xFex)17of the light rare-earth elements R = Ce, Pr, Nd, Sm, and Y and also of Ce-rich mischmetal (MM). In the Sm system, the terminal c…
Symmetry considerations reveal that an asymmetry exists relative to orthogonal 60° dislocations of the same sign in zinc-blende structure. The effect of this asymmetry has been observed in compositionally graded crystals of In1−xGaxP and GaAs1−xPx grown from vapor phase. It is observed that the spatial arrangement of…
Abstract The viscoelastic (VE) response of freeze‐dried blends of polystyrene (PS) and poly‐(2,6‐dimethyl phenylene oxide) (PPO) has been studied as a function of composition, frequency, and temperature to examine the degree of rheological compatibility. When blended together, the relaxation processes of both molecula…
Solutions of the convolution equation are given. A rigorous mathematical treatment shows that only one solution is consistent with the physical conditions. Application of these results to discrete examples has been carried out by means of an original deconvolution method, allowing isolation of the unique solution, and…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConformational Characteristics of Isotactic PolypropyleneAlan E. TonelliCite this: Macromolecules 1972, 5, 5, 563–566Publication Date (Print):September 1, 1972Publication History Published online1 May 2002Published inissue 1 September 1972https://pubs.acs.org/doi/10.1021/ma6…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudy of monoprotonated nitrogen bases using x-ray photoelectron spectroscopy (ESCA)Lawrence E. Cox, John J. Jack, and David M. HerculesCite this: J. Am. Chem. Soc. 1972, 94, 19, 6575–6578Publication Date (Print):September 1, 1972Publication History Published online1 May 200…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular bromine bridging of SbIII2Br93- anions and the crystal structure of tetraethylammonium nonabromodiantimonate(III)-dibromineCamden R. Hubbard and Robert A. JacobsonCite this: Inorg. Chem. 1972, 11, 9, 2247–2250Publication Date (Print):September 1, 1972Publication Hi…
Detailed theoretical study has been made of the nucleation model for wall motion in ferroelectrics. Kinetics of the wall motion has been worked out both analytically and by simulation. The wall velocity v is expressed in terms of nucleation rate I and sideways growth velocity u s of nuclei on the wall by the formula v…
Abstract Linear high‐density polyethylene is crosslinked by exposing it to a hydrogen glow discharge and alternatively by exposing it to a low‐pressure Hg–A ultraviolet lamp in a dry nitrogen atmosphere. For the UV lamp case, the crosslinked gel is measured as a function of the radiation dose. For the plasma case, the…
A class of point processes that possess intensity functions are studied. The processes of this class, which seem to include most point processes of practical interest, are called regular point processes (RPP's). Expressions for the evolution of these processes and especially for their joint occurrence statistics are d…
Abstract The conclusions of the present work may be summarized as follows. 1. The effective volume of carbon black in rubber, as measured by the low-strain equilibrium modulus, is equal to the true volume of carbon plus about half of the occluded volume of rubber calculated from the DBP absorption of the carbon black.…
This article reviews the theory of atomic vibrations in disordered solids, ranging from almost perfect crystal lattices to glassy materials where geometrical regularity is entirely absent. As a preliminary, the basic notations and equations of conventional lattice dynamics are briefly outlined; the essential equivalen…