Materials Literature
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High-angle x-ray diffraction provides direct evidence that amianthoid change, occurring during aging of costal cartilage, corresponds to a transformation from an isotropic to a marked anisotropic distribution of collagen fibrils. Low-angle x-ray diffraction and electron microscopy show that the fibrils have the custom…
Formal expressions are derived for the effective thermal conductivity K ij of randomly dispersed suspensions undergoing shear. These are then evaluated for the cases of dilute suspensions of cylinders and of spheres when the bulk motion is a simple shear, the Péclet number Pe is large, and the particle Reynolds number…
Abstract The crystal structure of (1,1′‐ferrocenediyl)diphenylsilane has been determined from analysis of photographic X‐ray data. The crystal system is orthorhombic, a = 14.18(2), b = 12.54(2), c = 9.28(1) Å, space group P nma with four formula units. The molecule has crystallographic m (C s ) symmetry with atoms Fe…
Results of a detailed investigation of the internal quality and mechanical properties of electroslag remelted 2 1/4 percent Cr-1 percent Mo steel are presented. Superiority over air melted-vacuum degassed electric furnace product in terms of homogeneity and cleanliness is evident. This quality enhancement is reflected…
To help elucidate some of the properties associated with the permanent magnetism of Sm1Co5, an experimental investigatlon was made of the magnetic and crystallographic characteristics of the tertiary alloys Sm.9z.1Co5where Z represents various selected elements other than rare earths or magnetic transition elements, t…
Abstract The kinetics of the cationic ring‐opening polymerization of propylene sulfide initiated with different initiators has been investigated and the results were compared with those obtained with triethyloxonium tetrafluoroborate as described in a previous paper. With triethyloxonium hexafluorophosphate, the polym…
The thermal conductivity of deformed crystals of bismuth and its dilute alloys has been measured as a function of temperature from 1.5 to 20 K. Most crystals were deformed by compression so as to cause slip on the glide systems (111)[10\bar1] and (001)[1\bar10]. The other crystals were deformed by rapid compression or…
Sm(Co0.08Cu0.13)zalloys were prepared with7.2 \leq z < 8. Homogenization heat-treatment yielded single phase 2-17 material forz > 7.2. Forz = 7.8some of the Co was substituted by Fe. The alloys remained single phase for up to 15 % Co substituted. With further increasing Fe content a Co-Fe phase appears accompani…
Abstract The Red Latosols of Sri Lanka have developed on the Quaternary Red Earth Formation into very deep, excessively drained soils with weak horizon differentiation. The three major soil series of this subgroup, the Gambura, Mullaitivu and Wilpattu series, were studied from the point of view of their morphological…
The whole-particle crushing strengths of high-temperature gas-cooled reactor fertile and fissile coated particles were measured and correlated with fabrication procedures. The crushing strength of Biso-coated fertile particles was increased by the following factors:Increasing the outer coating thickness by 10 µm incre…
This paper offers a numerical approach to the determination of the magnetic field distribution, in a semi-infinite space, filled with conductive ferromagnetic materiaI. Simple mathematical functions are used to simulate the saturation and hysteresis characteristics of a given material. The case of a sinusoidal magneti…
High water pressure hot-line insulator washing equipment has been developed and in service in Japan as an effective measure to prevent the contamination flashovers of apparatus insulators at 500-kV class substations. This paper presents the results of studies on the development of the equipment, including selection of…
The analysis of Barkhausen noise amplitude distributions is applied to the study of strain dependence of the magnetization process between 0 and 16 % strain in commercial grain oriented and isotropic Fe- 3.5 % Si sheet. The Barkhausen noise is excited at 4 Hz magnetizing frequency and analysed in the range 300 to 15,0…
Extends the discussion of escape peaks and internal silicon fluorescence presented by Reed and Ware (see ibid., vol.5, no.6, p.582 (1972)) to the case where the surface of the lithium-drifted silicon detector is not normal to the direction of the incident X-rays. This oblique geometry is used in several SEM and microp…
Measurements as a function of temperature t were performed on directional FeSi 3%, in order to study the possible influence on the power loss anomalies of a change of intrinsic parameters, such as crystalline anisotropy energy K, without affecting the extrinsic ones, such as grain size and orientation. Power losses pe…
The saturation magnetization, Curie temperature, easy direction of magnetization and anisotropy field of Er2Co17-xMxcompounds where M = Fe, Mn or Ni were investigated. It was not possible to prepare single phase materials for x > 6 when M = Mn and for x > 10 when M = Ni. The Mn containing ternaries possess an easy dir…
Diffusion couples formed in the range600 - 800\degC, between cobalt-copper alloys (0-25 at. % Cu) and Sm(Co,Cu)3containing the same amount of copper, have shown that copper progressively depresses the eutectoid transformation of SmCo5down to 600° C at 21 at. % copper. The data indicate the transformation temperature o…
The mechanism of collagen glucosyltransferase reaction was studied with enzyme preparations purified about 2500-5000-fold from extract of homogenate of whole chick embryos. Data obtained in experiments on initial velocity and inhibition kinetics of the reaction were consistent with an ordered mechanism in which the su…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSalt-type complexes of porphyrins: monocation octaethylporphinium tri-.mu.-halogeno-hexacarbonyldirhenate(I)C. P. Hrung, M. Tsutsui, D. L. Cullen, and E. F. Meyer Jr.Cite this: J. Am. Chem. Soc. 1976, 98, 24, 7878–7880Publication Date (Print):November 1, 1976Publication Hist…
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