Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProperties of two-dimensional polymersJan Tobochnik, Itzhak Webman, Joel Lebowitz, and M. H. KalosCite this: Macromolecules 1982, 15, 2, 549–553Publication Date (Print):March 1, 1982Publication History Published online1 May 2002Published inissue 1 March 1982https://pubs.acs.…
The paper characterizes point processes with the order statistic property without the unnecessary condition of finiteness of the first moment of the process, a condition imposed by previous researchers. It shows that the class of these processes is composed only of mixed Poisson processes up to a time-scale transforma…
Ternary Sm2Co17−xTx systems in which Co is replaced by V, Ti, Zr, and Hf have been studied to ascertain the efficacy of these elements in improving the permanent magnet characteristics of Sm2Co17-based magnets. Single phase materials were obtained for 0?x?1.0. X-ray diffraction measurements indicate that these compoun…
The distortion of the structure of a simple fluid of spherical particles when subjected to a shear is analyzed. The orientational distribution of particles around a central particle is examined via the radial distribution function. General symmetry arguments are advanced. Computer-simulation results using the techniqu…
The saturation magnetostriction λs of Fe, Co, and Ni films was measured by the cantilevered substrate technique. The values of λs, −6.8×10−6 and −38×10−6, obtained for Fe and Ni, respectively, are in accord with bulk published values. A unique value of λs could not be obtained for Co because the sputtered or evaporate…
Highly vibrationally excited NO(v = 1–10) has been created by irradiation of N2/trace O2 mixtures with 36 keV electrons. The resulting spectrally-resolved time histories of the NO fundamental vibration/rotation band have been analyzed to determine the room temperature rate constants for the processes NO(v)+O2→NO(v−1)+…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTris(2-(aminomethyl)pyridine)iron(II): a new spin-state equilibrium in solutionHelena Li Chum, J. A. Vanin, and Maria Isaura D. HolandaCite this: Inorg. Chem. 1982, 21, 3, 1146–1152Publication Date (Print):March 1, 1982Publication History Published online1 May 2002Published…
Optically stimulated luminescence (OSL) from CaS:Eu,Sm and SrS:Eu,Sm phosphors, previously exposed to ionizing radiation, is shown to occur with response and decay times of less than 50-ns full width at half-maximum. This result indicates that fast high-resolution OSL imaging of spatial dose distributions is possible…
The stress corrosion cracking (SCC) of sensitized Type 304 stainless steel in thiosulfate solutions has been studied using constant extension rate tests. Very low concentrations of about 6.10−7M Na2S2O3 (0.1 ppm) gave cracking. With boric acid added, higher concentrations (1 ppm) were required. The SCC was shown to be…
Abstract An investigation was conducted to establish property‐morphology relationships in polymethylmethacrylate/polyvinylidenefluoride (PMMA/PVDF) blends. All blends were compounded in a twin‐screw extruder and then processed by injection molding Mechanical properties of blends of various compositions were studied by…
It is demonstrated that the observed production by ultrasound of stable cavitation bubbles in tissues, at the frequency and intensities used by ter Haar and Daniels, (see ibid., vol. 26, p.1145-9, 1981), can be predicted on the basis of a presently available theory concerning the growth of bubbles by rectified diffusi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, structure, and properties of [Co8S6(SC6H5)8]4-, containing an octanuclear Co8S6 rhombic dodecahedron related to that of cobalt pentlanditeG. Christou, K. S. Hagen, and R. H. HolmCite this: J. Am. Chem. Soc. 1982, 104, 6, 1744–1745Publication Date (Print):March 1,…
A new technique for the characterization of semiconductors, surface photovoltage measured capacitance (SPMC) is introduced. This technique permits the semiconductor surface space-charge capacitance to be determined by simple measurements of the intrinsic surface photovoltage (ISPV) induced by chopped light. ISPV trans…
Magnetic hardening has been examined in the commercial Sm(Co, Fe, Cu, Zr)7.22 permanent magnet by correlating the magnetic properties with the microstructure of the sample. The shape of the initial magnetization curve and magnetic domain observations indicate that there is more than one magnetic hardening process invo…
A procedure is presented for the stereochemically restrained least-squares refinement of macromolecular structures with neutron and X-ray diffraction data from single crystals. This procedure has been tested by refining a model of ribonuclease A using neutron data to minimal spacings of 2.8 Å and X-ray data from withi…
Abstract The crystallization, from molten blends, of polypropylene (PP) and polybutene‐1 (PB), two highly crystallizable, polymers, their interaction in the amorphous phase, and the resulting tensile mechanical properties were studied. The crystallization was followed by DSC, showing two separate PP and PB crystalliza…
The effect of addition of Ti4+ under oxidizing atmosphere on the structural and magnetic properties of Ni0.3Zn0.7Fe2O4 is studied. The results of x-ray diffraction, magnetization, and Arrott plot measurements are reported. The data are analyzed on the basis of a three sublattice Yafet-Kittel model.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVolume dependence of the elastic equation of state. 3. Bulk-cured poly(dimethylsiloxane)R. W. Brotzman and B. E. EichingerCite this: Macromolecules 1982, 15, 2, 531–535Publication Date (Print):March 1, 1982Publication History Published online1 May 2002Published inissue 1 Mar…
Reductive methylation of hen egg-white (HEW) lysozyme with [13C]formaldehyde and NaCNBH3 and subsequent 13C NMR spectroscopy reveal resonances for each of the mono- and dimethyl derivatives of the six lysyl epsilon-amino groups and the NH2 terminus. Each resonance has a unique chemical shift, pKa, and chemical shift c…
Injection of liquid through a catheter into the circulation is known to produce clouds of signals detected by sonography. Blood forced through a stenotic conduit produced sonographic clouding, and bubbles of 10-100 microns were observed were observed by light microscopy. The microbubbles persisted up to three and a ha…