Materials Literature
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Abstract Aus Plumeria rubra var. alba (Apocynaceae) wurden neben dem bereits bekannten Fulvoplumierin das schon früher aus PI. multiflora isolierte Plumericin, sowie neu Isoplumericin, β‐Dihydroplumericin und β‐Dihydroplumericinsäure isoliert. Die vier Stoffe wurden charakterisiert und ihre Konstitution und Stereochem…
Abstract Exchange isotherms determined for the K‐A1 ion pair with montmorillonite, kaolinite and two soils were S‐shaped. In dilute solutions (<0.05 N ), A1 was strongly preferred by exchange sites except at low levels of K‐saturation. In more concentrated solutions (0.1 to 0.25 N ), K was preferred when its satura…
The cathodic behavior of iron, , and have been investigated in the borate/ buffer solution of . The hydrogen overpotential on iron is found to vary on surfaces of different crystallographic orientation and with changes in the surface microstructure. The immersion potentials and cathodic reduction behavior with regard…
Abstract CsCl und CoCl 2 bilden ein vierfach eutektisches System mit den Verbindungen Cs 3 CoCl 5 , Cs 2 CoCl 4 und CsCoCl 3 . Zwei weitere Verbindungen — Cs 5 Co 2 Cl 9 und Cs 3 Co 2 Cl 7 — zersetzen sich im festen Zustand. Im System RbCl/CoCl 2 liegen vor: Drei Eutektika, die Verbindungen Rb 2 CoCl 4 und RbCoCl 3 ,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProgress in Semiconductors.Morton E. JonesCite this: J. Am. Chem. Soc. 1961, 83, 2, 507–508Publication Date (Print):January 1, 1961Publication History Published online1 May 2002Published inissue 1 January 1961https://doi.org/10.1021/ja01463a076RIGHTS & PERMISSIONSArticle Vie…
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G. E. Walrafen and D. M. Dodd, Trans. Faraday Soc., 1961, 57, 1286 DOI: 10.1039/TF9615701286
J. H. Golden, J. Chem. Soc., 1961, 3741 DOI: 10.1039/JR9610003741
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEFFECTS OF DEHYDRATION AND CHEMISORBED MATERIALS ON THE SURFACE PROPERTIES OF AMORPHOUS SILICAW. K. Lowen and E. C. BrogeCite this: J. Phys. Chem. 1961, 65, 1, 16–19Publication Date (Print):January 1, 1961Publication History Published online1 May 2002Published inissue 1 Janu…
The nomenclature of the chloritoid group, which includes ottrelite, is reviewed. Five new chemical analyses, and all published analyses that are considered reliable, indicate that the chloritoid group can be represented by the general formula H 2 FeAI 2 SiO 7 with up to two-fifths of the ferrous iron replaced by magne…
The dynamical Jahn-Teller effect in the benzene negative ion is investigated by estimating the vibronic eigenfunctions and energies for the lowest energy degenerate and lowest energy nondegenerate vibronic states using Hückel molecular orbital theory and the normal coordinates for the 606 cm—1 and 1595 cm—1 E2g vibrat…
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Abstract Restrictions on freedom of rotation about the bonds of a polymer chain usually impose drastic limitations on the conformational states of polymer chains, and hence are of foremost importance in affecting the tendency of the polymer to crystallize. The severity of these restrictions notwithstanding, the random…
Mixed crystals NaCl-CdCl 2 containing a few mole per cent of CdCl 2 were examined by X-ray method. By a certain heat treatment, precipitates of a structure having f.c.c. lattice with lattice constant twice as that of the matrix are formed within the matrix. By another heat treatment, there appear diffuse spots corresp…
Cannulas were implanted in the lateral ventricles, cisterna magna and subarachnoid spaces of goats. Perfusion with synthetic cerebrospinal fluid (CSF) permitted study of exchange rates of test materials between CSF perfusion fluid and blood. Diodrast or phenolsulfonphthalein in low concentrations is removed from ventr…
B. Dacre and P. A. H. Wyatt, Trans. Faraday Soc., 1961, 57, 1281 DOI: 10.1039/TF9615701281
The thermal conductivities of the mono-carbides having NaCl type structure in several transition metals of the fourth and fifth groups on the periodic chart were measured at 0°C and at the liquid-oxygen temperature. For these substances, larger conductivity by lattice than those by conduction electrons is concluded fr…
Abstract Without modifying the General Electric XRD-5 diffractometer accurate lattice parameters of cubic structures may be determined quite simply and precisely. The method is applicable to both solid and powder samples and gives a precision of at least ±0.00025 A. The most important step in the analysis is the align…
Abstract The ‘wet’ carbonatation of calcium hydroxide has been compared at 22° and 95° to determine the effect of temperature on the rate of formation, solubility and subsequent rate of ageing of the products, as indicated by changes in lattice structure and in surface area and average crystallite size. Direct precipi…
Procedures for the preparation of aluminum, stainless steel, and magnesium for adhesive bonding have been developed, together with illustrative data showing the reliability of results. The lap joint shear test at room temperature was used as the criterion. The testing procedures, equipment used, and process variables…