The crystal structure of N2O5.3SO3
The crystals of N~O5.3S08 are monoclinic, with a = 19.54, b = 7.30, c = 7.56 A, fl = 102 .
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Application of Statistics to Reaction Kinetics
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTApplication of Statistics to Reaction KineticsW. R. McBride and D. S. VillarsCite this: Anal. Chem. 1954, 26, 5, 901–904Publication Date (Print):May 19, 1954Publication History Published online1 May 2002Published inissue 19 May 1954https://pubs.acs.org/doi/10.1021/ac60089a02…
Cation Distributions in Mixed Ferrites
In materials with the spinel structure, such as the ferrites, the cations are located on two different types of crystallographic sites. Expressions are derived for the equilibrium distribution of cations in mixed ferrites, which contain three different types of cations.It is suggested that the cation distributions in…
The degradation of solid polymethylmethacrylate by ionizing radiation
Abstract When polymethylmethacrylate in the solid form is irradiated in the atomic pile, or with γ-radiation, two reactions predominate: breakdown of the main chain, and decomposition of the side chain with evolution of gases. The former was followed by changes in viscosity, the molecular weight of the irradiated poly…
The formation of cracks as a result of plastic flow
Abstract The stresses round a piled-up group of dislocations are investigated with reference to the initiation of a crack. A crack should form when the group consists of about 1000 dislocations piled up under a stress of the magnitude occurring in a cold-worked metal. The stress system due to the crack is obtained. Th…
A study of phase transitions in sodium hydroxide
Abstract As a part of a broad programme of investigation of sodium hydroxide, the transitions up to its melting point were studied. This was accomplished by correlation of results obtained through use of differential thermal, high‐temperature microscopic, and high‐temperature X ‐ray analyses. The melting of sodium hyd…
Chemistry in carbon black dispersion
Abstract Heating rubber‐carbon black mixtures at elevated temperatures results in vulcanizates with lower electrical conductivity, lower hysteresis, lower Durometer hardness, and increased abrasion resistance. These changes are apparently the result of chemical reactions between carbon black and rubber which alter the…
The Composition of Some Tetra-t-butyl Titanate-Glycol Reaction Products2
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Composition of Some Tetra-t-butyl Titanate-Glycol Reaction Products2Richard E. Reeves and Laurence W. Mazzeno Jr.Cite this: J. Am. Chem. Soc. 1954, 76, 9, 2533–2536Publication Date (Print):May 1, 1954Publication History Published online1 May 2002Published inissue 1 May 1…
Degradation of Cotton Fibers and Yarns by Heat and Moisture
Strength and elongation measurements were made on single cotton fibers and on yarns which had been subjected to various temperatures from 110° to 162°C and various moisture conditions from 3% R.H. up to saturation for periods of heating from 2 to 128 hrs. Moisture contents and degrees of polymerization were also deter…
Fast Time Analysis of Intermittent Point-to-Plane Corona in Air. III. The Negative Point Trichel Pulse Corona
Fast oscilloscopic time analysis of the negative point Trichel pulse corona in room air at various pressures and gap geometries reveals the following data. The very short rise and quenching time of the pulse at atmospheric pressure observed by English is confirmed. Under these conditions the secondary action is a phot…
Mechanism of Filiform Corrosion
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism of Filiform CorrosionW. H. Slabaugh and Morris GrotheerCite this: Ind. Eng. Chem. 1954, 46, 5, 1014–1016Publication Date (Print):May 1, 1954Publication History Published online1 May 2002Published inissue 1 May 1954https://pubs.acs.org/doi/10.1021/ie50533a053https:/…
Effect of electric discharges on the breakdown of solid insulation
The effect of corona on the long-time dielectric strength of insulation is emphasized in this paper, and various factors influencing the breakdown of insulation with corona are discussed. Data on the corona threshold voltages on dielectric surfaces at electrode edges show that the threshold voltage varies for a wide v…
Thermography of Gypsum
A study of gypsum was made using the differential thermal analysis technique. Gypsum and mixtures of gypsum with silica, alumina, iron oxide, dialyzed kaolin, or carbon were analyzed. Furnace atmospheres of air, nitrogen, carbon dioxide, and carbon monoxide were used. Gases evolved at the decomposition temperature of…
Ultrasonic Spectrum of Cavitation Noise in Water
The acoustic noise spectrum associated with the collapse of transient cavities produced by a stirring rod in water was measured in the frequency range 1–3500 kc. While the spectrum, in general, goes as f−2 above 1 kc, flat regions are found between 20 kc and 100 kc, and again above 500 kc to at least 3500 kc. If the f…
Electronic Hall Effect in Diamond
A method for measuring the Hall mobility in insulating photoconductors is described which avoids the space-charge difficulties present in previous measurements. Unconventional electrodes are used, and the method differs from the conventional one in several other ways. It is a transient method, and the electric field i…
Constrictions and Jogs in Extended Dislocations
A constriction (defined as a point at which the two partial dislocations are recombined) must be formed before an extended dislocation can climb. The energy required is found to be about 6 eV, but may be reduced in the presence of an applied stress. Constrictions are more easily formed in Cottrell-Lomer locked disloca…
Striatad fiberglas tile cuts noise 80 per cent
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Bentonit im baugewerbe
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Review of construction and materials – secondite
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El horno vertical (2ª. Parte) - Dimensiones y características de la cocción en el mismo (Conclusión)
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