Materials Literature
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The infra-red spectrum of borine carbonyl has been investigated in the region 2 to 25μ. Two perpendicular-type bands have been partially resolved, and indicate that the molecule is a symmetric top with symmetry C3v. A normal coordinate analysis of axial WXYZ3 molecules has been carried out and applied to H3BCO, the fo…
The study of the influence of textile geometry upon textile structure performance is extended to staple-fiber yarns. Methods previously developed for continuous-filament yarns [6] are applied to determine the theoretical dependency of staple-yarn tensile characteristics upon the stress dis tribution, and modifications…
Cotto n cut in a Wiley mill to pass a 20-mesh scr ee n was ground in a vibrator y ball mill similar to one t hat has been used in German y and H olland. Con tamination of the cotton was practically elimin ated by using a chromium-plated hardened steel jar and chl'omium all oy balls. The jar holder is held by a slip ri…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPrecipitation of Oxalates from Homogeneous Solution. Separation and Volumetric Estimation of ZincE. R. Caley, Louis. Gordon, and G. A. SimmonsCite this: Anal. Chem. 1950, 22, 8, 1060–1062Publication Date (Print):August 1, 1950Publication History Published online1 May 2002Pub…
Experimental data indicate that cold‐setting bonds may be farmed from oxide‐phosphoric acid reactions, from phosphate‐phosphoric acid reactions, or by direct addition of liquid phosphate bond. In all cases acid phosphates are responsible for the bonding action. For optimum bonding, a weakly basic or amphoteric cation…
Abstract In Fortsetzung unserer Untersuchungen über Chalkogenohalogenide des dreiwertigen Antimons und Wismuts 1 ) wurden Kristalle folgender Selenohalogenide durch gemeinsames Tempern von Selenid und Halogenid unter Luftabschluß dargestellt: SbSeBr, SbSeJ, BiSeCl, BiSeBr und BiSeJ. Die Präparate kristallisieren in rh…
The electrostatic contribution to the lattice energy of some ordered spinels is calculated. It is made plausible that also in the case of certain spinels that do not show any long-range ordering, a considerable amount of short-range order is to be expected. As a consequence the lattice energy of ``inversed'' spinels c…
Abstract Durch gemeinsames Tempern der entsprechenden Sulfide und Halogenide des dreiwertigen Antimons und Wismuts unter Luftabschluß wurden Kristalle folgender Thiohalogenide dargestellt: Sb 4 S 5 Cl 2 , SbSBr, SbSJ, BiSCl, BiSBr und BiSJ. Die Präparate kristallisieren rhombisch‐holoedrisch mit vier Molekülen in der…
ADVERTISEMENT RETURN TO ISSUEPREVArticleThe Determination of Bond Dissociation Energies by Pyrolytic Methods.M. SzwarcCite this: Chem. Rev. 1950, 47, 1, 75–173Publication Date (Print):August 1, 1950Publication History Published online1 May 2002Published inissue 1 August 1950https://doi.org/10.1021/cr60146a002Request r…
The effects of stress on the internal structure and energy characteristics of metals are discussed with relationship to their influence on corrosion reactions. The nature and importance of residual stresses and the non-homogeneity of worked metals are emphasized. Recent concepts of the nature of grain boundaries are r…
Abstract In 2 S 3 wurde mit BeS, MgS, CaS, SrS, BaS, ZnS, CdS, HgS, SnS, PbS, TiS, VS, CrS, MnS, FeS, CoS und NiS im molaren Verhältnis 1:1 bei Temperaturen zwischen 900 und 1200° C umgesetzt. Bei sämtlichen Versuchen wurde eine Umsetzung beobachtet. Eindeutig wurde jedoch nur die Bildung der Verbindungen MgIn 2 S 4 ,…
A systematic treatment is given of the energies and widths of domain boundaries in ferromagnetics; it covers cubic crystals, with positive or negative magneto-crystalline anisotropy coefficients, and crystals with a single easy direction of magnetization. This extends the investigations of Bloch (1932), Landau and Lif…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanical Properties of Substances of High Molecular Weight. VI. Dispersion in Concentrated Polymer Solutions and its Dependence on Temperature and ConcentrationJohn D. FerryCite this: J. Am. Chem. Soc. 1950, 72, 8, 3746–3752Publication Date (Print):August 1, 1950Publicatio…
Abstract Vor 10 Jahren wurde das erste magnetische und das erste elektrostatische Übermikroskop von den Berliner Entwicklungsstellen der Praxis übergeben. Die deutsche Forschungs‐ und Entwicklungsarbeit findet jetzt ihre internationale Unterstreichung dadurch, daß in Paris vom 14. bis 22. September 1950 ein internatio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMutual Solubilities of Hydrocarbons. III. Systems cis-Decahydronaphthalene—trans-Decahydronaphthalene, cis-Dehydronaphthalene—Tetracosane, cis-Decahydronaphthalene—DotriacontaneWilliam F. Seyer, Sun Yip, and Gordon PyleCite this: J. Am. Chem. Soc. 1950, 72, 7, 3162–3164Publi…
Measurements have been made of the magnetic susceptibility of fairly pure uranium and of 5 and 10 atomic per cent alloys of iron with uranium. Using a modification of the Curie method, with special pole-pieces and electromagnetic dynamometer control, the specimens were found to be paramagnetic with no trace of ferroma…
The formal theory, based on the concept of thermal activation of domain processes, previously proposed to account for the phenomenon of magnetic viscosity, has been extended to describe time decrease of permeability Within certain limits the predictions of the theoretical analysis are verified by measurements made on…
Repu/e 8 dgcembre 1949
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Thomas F. Anderson; The Use of Critical Point Phenomena in Preparing Specimens for the Electron M…
Recent experiments by Warburg in collaboration with B. S. Hendricks and Dean Burk of the National Cancer Institute were conducted on the maximum quantum efficiency of photosynthetic processes which have been disputed since the middle 1930's. These latest experiments, unfortunately, are not included in the last chapter…