Materials Literature
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KEYWORDS: iodine removal processiodine 1315A zeolite13X zeolitesilver zeolitesnitrogen oxidesdissolver off-gasthermal stability
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetal-nitroxyl interactions. 31. Single-crystal EPR spectra of a spin-labeled vanadyl porphyrinReddy Damoder, Kundalika M. More, Gareth R. Eaton, and Sandra S. EatonCite this: Inorg. Chem. 1983, 22, 20, 2836–2841Publication Date (Print):September 1, 1983Publication History P…
Abstract Einkristalle von AlTaO 4 wurden zwischen 1310–1360°C dargestellt und mit röntgenographischen Methoden die Kristallstruktur bestimmt. Diese Verbindung kristallisiert tetragonal mit a = 460,6 5 und c = 298,5 pm in der Raumgruppe D –P4 2 /mnm. AlTaO 4 besitzt eine ungeordnete Metallverteilung mit Rutilstruktur u…
The equilibrium pH index is proposed as a replacement for the Langelier Saturation Index (LSI) and the Ryzner's Stability Index (RSI) as a method for utility power stations to predict whether their cooling water will form calcium carbonate scale in their condensers. Both the LSI and RSI are explained, and it is seen t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHighly reduced organometallics. 15. Coordinatively unsaturated tetranuclear hydrido carbonyl clusters of molybdenum and tungsten. Structural characterization of tetrakis(tetrapropylammonium) tetrakis(tricarbonylhydromolybdate) ([(n-C3H7)4N]4[HMo(CO)3]4)Jiann T'suen Lin and J…
Diffuse interfaces are observed in the interconnected structure of a phase‐separated K 2 O‐Al 2 O 3 ‐CaO‐SiO 2 glass. With continued electron irradiation in the scanning transmission electron microscope, the interfaces are observed to sharpen with little attendant change in phase morphology, indicating that the as‐coo…
It has been known empirically that some kinds of liquid crystal align perpendicular to inorganic flat surface such as In2O3 film. The authors clarified in the previous paper that this phenomena was due to perpendicular adsorption of amphiphilic impurities contained in the liquid crystal to the substrate surfaces. In t…
A simple and practical viscometrical method for monitoring the progress of condensation polymerization reactions was investigated. It consisted of following the reaction mixture capillary flow time as a function of molar ratio of the reacting monomers in a polymerization reaction performed by gradual addition of terep…
An empirical formula for gamma-ray buildup factors in two-layer shields is proposed. The values of the parameters are given for the formula when fitted to the dose buildup factors, calculated by the invariant imbedding method, for normally incident gamma rays penetrating two-layer shields comprised of combinations of…
Kaolinite undergoes structural transformation on heating. X‐ray photographs reveal the existence of a spinel‐type phase when kaolin is heated at 980°C. The kaolinite decomposes into a spinel phase with the expulsion of silica. A controversy arises as to whether the spinel phase is γ‐Al 2 O 3 or Si‐Al spinel. Calculati…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDependence of magnetic properties on structure in the systems nickel(II) molybdate(VI) and cobalt(II) molybdate(VI)K. Sieber, R. Kershaw, K. Dwight, and A. WoldCite this: Inorg. Chem. 1983, 22, 19, 2667–2669Publication Date (Print):September 1, 1983Publication History Publis…
Abstract Monodispersed poly(4‐bromostyrenes) (PBs) and their block copolymers with styrene, isoprene, and 3‐methylbutene were prepared and characterized by GPC and NMR. Polystyryl and α‐methylstyryl carbanions act as effective initiators of the anionic polymerization of Bs in THF. The undersirable side reactions, due…
We report magnetostriction measurements on a single crystal of Tb.27Dy.73Fe2. Length changes parallel and perpendicular to a 111 direction were measured from 298 to 3.1K in magnetic fields from zero to 25kOe. The λ vs H curves show saturation at low fields above 280K; below 280K λ becomes progressively more difficult…
The N-I transition temperatures for a range of 4-propyl 1-monoesters and several 1,4-diesters of cubane, bicyclo(2.2.2)octane, cydohexane and benzene have been determined. The differences between the values for the monoesters and diesters of each system and between those for the various ring systems for the mono- and…
Several optical tests were employed to demonstrate twinning in raphides from 10 species in the family Vitaceae and one species in the Araceae. Scanning electron microscopy revealed that twin raphides differ from the reported shape of twin styloids and that raphides of the Vitaceae are "barbed" along two sides. A model…
Selfsputtering yields of molybdenum and tungsten have been measured by the weight change method in the energy range between 0.1 keV and 10 keV at normal incidence. Measured yields are compared with two different universal empirical formulae proposed to predict the energy dependence of the sputtering yield and it is fo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSyntheses and structures of a novel series of tetrathiolene clusters: (.eta.5-C5H5)2Fe2(C10Cl4S4)(C10Cl4S3), (.eta.5-C5H5)2Co2(C10Cl4S4), and (.eta.5-C5H5)2Ni2(C10Cl4S4)Boon K. Teo, V. Bakirtzis, and P. A. Snyder-RobinsonCite this: J. Am. Chem. Soc. 1983, 105, 20, 6330–6332P…
Analytical spatial yield spectrum approach has been applied to calculate the electron flux, volume excitation, and ionization rates for monoenergetic electrons incident on the earth's atmosphere. The results have been compared with the previous model calculations of Mantas and Walker (1976) and Banks et al. (1974).
Abstract A model of the TlGaSe 2 ‐I band structure of the monoclinic modification is proposed. The monoclinic modification of TlGaSe 2 ‐I is considered as a deformed tetragonal one. The band structure of the metastable tetragonal modification of TlGaSe 2 ‐II is calculated by the pseudopotential method. The irreducible…
ABSTRACT Microtubule involvement in diatom valve symmetry and pattern formation was investigated using cells synchronized subsequent to mitosis and cytokinesis but prior to cell wall formation. Two analog drug pairs, each consisting of an active and an inactive microtubule drug, were used to distinguish inhibitory eff…