Materials Literature
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Centrifuge measurements and electrostatic charge measurements have shown that the force of adhesion of xerographic toner particles to carrier beads can be described by an electrostatic model. In this model the triboelectric charge on the toner particle is attracted by its countercharge residing on the bead surface and…
Abstract The trapping of holes by In + and In + v centres in KCl:In is found to be accompanied by luminescence of the same spectral composition as the emission spectra of In ++ and In ++ v centres, respectively. The processes of migration and trapping are investigated for holes thermally or optically released from In…
Abstract The excitation of the Cs‐5p core level in Cs halides which starts a t about 13 eV was studied by measuring the reflection spectra of evaporated films between 12.5 and 26 eV at room temperature and a t 30 K. Synchrotron radiation was used as a light source. In comparison to the spectra at room temperature new…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFluorine-19 nuclear magnetic resonance study of the binding of trifluoroacetylglucosamine oligomers to lysozymeF. Millett and M. A. RafteryCite this: Biochemistry 1972, 11, 9, 1639–1643Publication Date (Print):April 1, 1972Publication History Published online1 May 2002Publis…
Nuclear magnetic resonance measurements of spin-lattice relaxation time and resonance line shapes have been carried out as a function of temperature in the range 77–715°K for 1H contained in yttrium hydride. The composition ranged from YH2.61 to YH2.94 and included three samples in the hydrogen-deficient trihydride ph…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalysis in organosilicon chemistry. III. Catalytic mode, solvent isotope effets, and transition-state structure in hydride expulsion from siliconKathleen O'Donnell, Rhonda Bacon, K. L. Chellappa, Richard L. Schowen, and J. K. LeeCite this: J. Am. Chem. Soc. 1972, 94, 7, 25…
Abstract An unsaturated polyester resin and the styrene‐crosslinked polyester were studied with laser Raman spectroscopy. Following the polyesterification reaction, Raman measurements showed that the polyester contained 55% fumarate and 45% maleate unsaturation. Additionally, the glycol fragment was indicated to exist…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization of iron and rare-earth polymers of di(2-ethylhexyl)phosphoric acidTakeo Harada, Morton Smutz, and Renato G. BautistaCite this: J. Chem. Eng. Data 1972, 17, 2, 203–204Publication Date (Print):April 1, 1972Publication History Published online1 May 2002Publishe…
The spectra of nickel dissolved in silicate and aluminosilicate glasses with alkali and alkaline‐earth modifiers were studied systematically as functions of composition, annealing and temperature, concentration of Ni 2+ , and redox conditions during melting. Although reducing conditions produced a gray scattering phas…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSunliight photochemistry of ferric nitrilotriacetate complexesTrevor Trott, Robbie W. Henwood, and Cooper H. LangfordCite this: Environ. Sci. Technol. 1972, 6, 4, 367–368Publication Date (Print):April 1, 1972Publication History Published online1 May 2002Published inissue 1 A…
The piezoelectric constants, the electromechanical coupling factors and the elastic compliance constants of Se-Te alloys are studied by the transmission circuit method and/or the mechanical resonance method. The piezoelectric constants d 11 and d 14 decrease rapidly when the Te concentration increases within the range…
ABSTRACT The flexural rigidity of the large abfrontal cilia of Mytilus has been measured with a flexible glass micro-needle. The same cilium has similar values to the flexural rigidity irrespective of the phases of beat cycle (including the recovery phase) and of the direction of force applied. The values of 3–13 × 10…
This report includes data on high temperature organic crystals, ceramics, and glasses. Additional sections include plastic materials with less heat resistance. (P.S.-PL)
A study has been made of the electrochemical behavior of titanium, nickel, and various titanium-nickel alloys, containing 2, 3.5, 4.5, 28.5, 38, and 98 wt % nickel, in an acidified (pH = 1) 3.5% NaCl solution, both at ambient temperature and at the boiling point. The anodic and cathodic polarization behavior was studi…
The initial susceptibilities of powder dimethylammonium copper (II) chloride (DMACuCl3) and tetramethylammonium nickel (II) chloride (TMANiCl3) have been measured in the ranges 1.7–91 °K and 1.6–79 °K, respectively. DMACuCl3 exhibited deviations from Curie-Weiss behavior below 10 °K. The deviations were not inconsiste…
Using the model of Oseen and de Vries, we show that phase matching of optical third-harmonic generation can be achieved in a cholesteric liquid crystal with the help of the lattice momentum. Many different collinear phase-matching conditions exist. In some cases, the phase-matched third harmonic is generated in the sa…
Internal friction and Na and K self‐diffusion coefficients for (I–X)Na 2 OXK 2 O‐3SiO 2 glasses were measured. Alkali diffusion was measured between 300° and 500°C using radioactive isotopes and a thin‐sectioning technique; internal friction was determined at room temperature to 500°C at 0.1 to 2000 Hz. Comparison of…
The resistivity and Hall effect in $n$-type EuTe single crystals containing \ensuremath{\sim} ${10}^{19}$ carriers/${\mathrm{cm}}^{3}$ were studied at $1.6<T<300$ K in magnetic fields up to 140 kOe. At temperatures $T\ensuremath{\lesssim}2{T}_{N}$, where ${T}_{N}\ensuremath{\cong}9.7$ K is the N\'eel temperature…
The antiferromagnetic phase of NiS is suppressed at pressures in excess of 20 kbar and no anomalous behavior is observed in the temperature dependence of the resistivity above the critical pressure. Single-crystal x-ray diffraction studies set a limit on the movement of the sulfur atoms in the antiferromagnetic phase…
Pressure-induced electronic transitions have been observed in a wide variety of materials. In particular, Mössbauer resonance studies under high pressure have revealed changes of oxidation state and spin state of iron as a function of pressure. These processes involve the thermal transfer of an electron to a new groun…