Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization of Liquid-Solid Reactions. Hydrochloric Acid-Calcium Carbonate ReactionB. B. Williams, J. L. Gidley, J. A. Guin, and R. S. SchechterCite this: Ind. Eng. Chem. Fundamen. 1970, 9, 4, 589–596Publication Date (Print):November 1, 1970Publication History Published…
Spontaneous cross-linking in vitro, during incubation of purified collagen in nonstriated and native type fibrils, was studied to elucidate the relationship between intra and intermolecular cross-links. In nonbanded fibrils, the aldol condensation products of two allysyl residues, previously shown to constitute the in…
A critical assessment of the merits of core-spinning by means of comparisons of the strength and extension of core-spun yarns with all-staple-fibre yarns forms the basis of this paper. Core-spinning was done by introducing the filament under tension into the drafted strand as the latter entered the front rollers of th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhysical Properties of Poly(β-hydroxy butyrate). III. Folding of Helical Segments in 2,2,2-TrifluoroethanolJ. Cornibert, R. H. Marchessault, H. Benoit, and G. WeillCite this: Macromolecules 1970, 3, 6, 741–746Publication Date (Print):November 1, 1970Publication History Publi…
Dislocations and disolinations in crystals are described in part by trans-lational and rotational symmetry operations respectively of the perfect crystal. A third type of Weingarten-Volterra defect, the dispiration, which depends on the presence of screw symmetries in the perfect crystal is introduced and defined. The…
A cell has been constructed with a thin film electron transparent window and a built-in transmitted electron detector for the examination of specimens in the scanning electron microscope at atmospheric pressure and in the presence of water. At 20 kV a resolution of approximately 0·1 μm has been attained with wet polys…
Abstract Eine untere Grenze für die Gefährdung organischer Moleküle bei dem Versuch, einzelne ihrer Atome abzubilden, ist dadurch gegeben, daß die Atome bei der elastischen Ablenkung der abbildenden Elektronen einen Rückstoß erfahren, der zum Zerreißen der chemischen Bindungen führen kann. Bei dünnen Objekten hängt di…
Cylindrotheca fusiformis Reimann & Lewin, a marine littoral pennate diatom, can grow in the dark in media containing an organic substrate. Lactate, succinate, fumarate, malate, Tryptone, Casamino Acids, or Yeast Extract can serve as substrate. Glucose apparently cannot be used for heterotrophic growth. Cells taken…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMass Transfer Characteristics of Woven-Wire Screen CatalystsC. N. Satterfield and D. H. CortezCite this: Ind. Eng. Chem. Fundamen. 1970, 9, 4, 613–620Publication Date (Print):November 1, 1970Publication History Published online1 May 2002Published inissue 1 November 1970https…
The genetic location of mutations affecting the citric acid cycle and the properties of mutants of Bacillus subtilis possessing these mutations have been examined. Genes coding for the component enzymes of the cycle were found to be unlinked to each other and thus do not form an operon. The mutational defect in a muta…
Relative displacements of the atoms corresponding to the lowest frequency long wavelength transverse optic phonon of several materials with the perovskite structure were determined directly by a least-squares refinement of the integrated intensity of inelastic neutron scattering. The modes of KTaO3 and SrTiO3 were ide…
LCR
This study investigated the effect of alloying on the behavior of Fe-Cr-Ni base alloys in boiling MgCl2 solutions. Alloys included commercial Fe-Cr-Ni alloys; ternary Fe-Cr-Ni alloys to 40% Cr; fourth-component alloys with specific alloy bases; fourth-, fifth-, and sixth-component alloys. The primary experimental meas…
We have developed a fast and essentially exact numerical technique for computing propagation, reflection and transmission of light by a flat layer of any linear optical medium in which the dielectric tensor varies only in a direction normal to the surfaces. Using this technique with Oseen's spiraling-dielectric-tensor…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBinding energy of the "2p" electrons of silicon in various compoundsRagnar Nordberg, Heinz Brecht, Royal G. Albridge, Anders Fahlman, and John R. Van WazerCite this: Inorg. Chem. 1970, 9, 11, 2469–2474Publication Date (Print):November 1, 1970Publication History Published onl…
The electrical conductivity and thermoelectric power of highpurity polycrystalline ThO 2 in thermodynamic equilibrium with the gas phase were measured as a function of temperature from 1000° to 1600°C and as a function of oxygen partial pressure from 1 to 10 −22 atm. An n ‐type electronic contribution to the conductiv…
The lattice dynamics of tetragonal BaTi${\mathrm{O}}_{3}$ have been investigated by inelastic neutron scattering from a single-domain crystal. Measurements were carried out on two projections, ($\mathrm{hk}0$) and ($h0l$); the study revealed extreme anisotropy in energy and damping of the soft optic mode, depending up…
A general theory is developed for the relation between the molecular length and the position of a diffraction maximum found at diffraction angles of the order of 4°, for nematic and isotropic phases containing elongated molecules. Using this theory and a previously developed one for the relation between the intermolec…
Sound velocities, densities, and lattice parameters of hot‐pressed bodies of the solid‐solution series Al 2 O 3 −Cr 2 O 3 were investigated. Measured lattice parameters deviated slightly from Vegard's law. The compositional dependence of the longitudinal sound velocity agreed well with the predictions of Birch; the ob…
This paper presents results of experimental studies on the flashover strength of ice-coated insulators. Two types of flashover have been found on ice-covered insulators. One is caused by hard and dry ice formed in temperatures lower than 15 °F. Another is caused by mixed conditions of ice and misty rain in relatively…