Der moderne drehofen mit schwebegaswärmetauscher
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Drehzahl und neigung von drehöfen
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Variaciones de la plasticidad de pastas cerámicas
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Récents développements de l'industrie cimentière aux Etats-Unis
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Portable plant
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Praktische versuche an den zur zeit in der deutschen zementindustrie üblichen ofensystemen
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Ring formation in cement kilns
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Solubility and Diffusion Coefficient of Carbon in Nickel: Reaction Rates of Nickel-Carbon Alloys with Barium Oxide
Experimental values for the solubility of carbon in nickel in the range 700°C to 1300°C yield the equation lnS=2.480−4,880/T, where S is the solubility in grams of carbon per 100 grams of nickel. Values obtained for the diffusion coefficient in the same range fit the equation lnD=0.909−20,200/T, where D is in cm2 per…
Cross-linking of polythene by pile radiation
Abstract Polythene subjected to irradiation in the Harwell B.E.P.O. pile becomes cross-linked, and a new type of plastic is produced which does not melt at about 115° C, nor dissolve in hot organic compounds. The mechanical properties are also altered, especially above 115° C, when the plastic shows rubber-like elasti…
CIS-TRANS ISOMERS OF VITAMIN A AND RETINENE IN THE RHODOPSIN SYSTEM
Vitamin A and retinene, the carotenoid precursors of rhodopsin, occur in a variety of molecular shapes, cis-trans isomers of one another. For the synthesis of rhodopsin a specific cis isomer of vitamin A is needed. Ordinary crystalline vitamin A, as also the commercial synthetic product, both primarily all-trans, are…
Ferromagnetism at Very High Frequencies. IV. Temperature Dependence of the Magnetic Spectrum of a Ferrite
The magnetic spectrum of a sintered ferrite, previously studied by the authors at room temperature and found to contain an rf resonance, attributed to domain wall displacements, and a microwave resonance, attributed to domain rotations, has now been observed at 77\ifmmode^\circ\else\textdegree\fi{}K, 195\ifmmode^\circ…
The Plasticity of Silicon and Germanium
A qualitative analysis of Gallagher's measurements of plastic flow in germanium and silicon is made. It is reasonable to suppose the slip occurs by motion in {111} planes of dislocations having a Burger's vector equal to an allowed translation in the ($1\overline{1}0$) direction. It is suggested, following current tho…
Introductory remarks
Abstract A comparison is given between flow in liquids, creep in crystals and intercrystalline slip. A further comparison is made between latent heats of fusion, shear moduli and the energies to form vacancies.
Untersuchungen in den ternären Systemen Magnesium-Kupfer-Zink, Magnesium-Nickel-Zink und Magnesium-Kupfer-Nickel
Article Untersuchungen in den ternären Systemen Magnesium-Kupfer-Zink, Magnesium-Nickel-Zink und Magnesium-Kupfer-Nickel was published on November 1, 1952 in the journal International Journal of Materials Research (volume 43, issue 11).
Anregung der Zwischenstufen‐Umwandlung des Stahles durch kleine Mengen von α‐Eisen
Umwandlungsverhalten von Stählen mit 1. 0,86% C und 2,0% Mn, 2. 0,31% C, 0,9% Mn und 3,6% Ni, 3. 0,95% C, 0,9% Mn und 5,0% Cr, 4. 1,2% C und 3,2% Mn in der Zwischenstufe bei gleichgehaltener Temperatur. Beschleunigung der Umwandlung des Austenits in der Zwischenstufe durch Keime von α‐Eisen. Deutung der Umwandlungsvor…
Effect of vertical divergence on the displacement and breadth of X-ray powder diffraction lines
A treatment is given of the aberrations caused by the extension of the X-ray source, specimen and receiving slit normal to the plane of the camera or spectrometer. A detailed examination is made of the aberrations which occur: ( a ) when the height of the specimen is the sole cause, and ( b ) when the vertical diverge…
The Dynamics of Small Transient Cavities
Experimental methods have been developed for creating and observing single spherical cavities in water and certain organic liquids Rapid photography permits motion analysis to be made The cavities show several cycles of expansion and collapse during their lifetime of a few milliseconds At each volume minimum a sharp p…
Glyoxalase: the role of the components
Since the discovery by Lohmann (1932) that reduced glutathione (GSH) is the coenzyme of glyoxalase, several workers have reported that methylglyoxal and GSH form a compound and have suggested that this might be the true substrate for the enzyme or an intermediate in the reaction. Thus Jowett & Quastel (1932) observed…
The Piezoelectric, Dielectric, and Elastic Properties of ND4D2PO4(Deuterated ADP)
Measurements of the dielectric constants, piezoelectric constants, and elastic constants have been made for the crystal N${\mathrm{D}}_{4}$${\mathrm{D}}_{2}$P${\mathrm{O}}_{4}$ (heavy water ADP). This crystallizes in the same form as normal ammonium dihydrogen phosphate (ADP) but has a transition at -31\ifmmode^\circ\…
Mechanics of Elastic Performance of Textile Materials
Theoretical analyses of the torsional recovery of filaments and singles yarns and the ply back-twist required to give balanced plied yarns are presented. The methodology employed parallels that previously reported for filament bending recovery [4]. The filaments are assumed to be linearly elastic for shear stresses be…