Materials Literature
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Efficient utilization of electrical insulating materials in electrical apparatus, devices, and cables requires knowledge of the dielectric loss behavior of materials under specific voltage, frequency, and temperature conditions. The appearance of significant dielectric losses may not only represent an unnecessary ener…
This paper presents the results of experiments to investigate the effect of temperatureon the films found on 70/30 copper–nickel. The results show that the potential of 70/30 copper–nickel and 66/30/2/2 copper–nickel explain the poor resistance to impingement attack of this alloy at low temperatures, observed greater…
We found that Toyopearl HW-65C gel matrix adsorbed ferredoxin and ferredoxin-NADP+ reductase in the presence of concentrated ammonium sulfate. Ferredoxin was strongly adsorbed on the gel in 80% saturated ammonium sulfate, and ferredoxin-NADP+ reductase was adsorbed in 40% saturated ammonium sulfate. The phenomenon was…
Two procedures for the preparation of HM forms from both small-port mordenite (SPM) and large-port mordenite (LPM) have been studied. The procedures are acid attack of the NaM form and calcination of the NH4M form. The solids were characterized by chemical analysis, benzene adsorption, X-ray diffraction and precise me…
Using blue Sepharose affinity chromatography, we purified orotidine-5'-phosphate decarboxylase over 600-fold, to near homogeneity, from strains of Escherichia coli harboring the cloned pyrF gene on the multicopy plasmid pDK26. The purified enzyme has a subunit molecular weight of 27,000 but appears to be catalytically…
The surface tension and the dispersion and polar components of the surface tension for solids and liquids were estimated by contact angle measurement in order to apply these concepts to a detergency study. Two approximation methods, the extended Fowkes' equation and Wu's equation, were adopted for the calculations. Am…
A mathematical model has been developed that can predict the elastic and strength behavior of a section of a structural lumber member containing a knot and cross grain. The model, embodied in the computer program KMESHI, accounts for the presence of a knot, the associated grain deviations, and global cross grain, and…
The syntheses, via metal-ion (Mg2+, Ca2+, or Ba2+) template methods followed by transmetallation, of the complexes [ML1]X2(M = MnII, FeII, CoII, NiII, CuII, or ZnII; X = ClO4– or BPh4–) of the potentially septidentate ligand L1 formed by condensation of 1 mol of 2,6-diacetylpyridine with 2 mol of 3-oxapentane-1,5-diam…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInvestigations of "cation-cation" complexes of neptunyl ion (NpO2+) solutions by large-angle x-ray scatteringB. Guillaume, R. L. Hahn, and A. H. NartenCite this: Inorg. Chem. 1983, 22, 1, 109–111Publication Date (Print):January 1, 1983Publication History Published online1 Ma…
Brownish yellow saprolite derived from granite gneiss is exposed beneath 1–2 m of reddish brown till along a roadcut in the Cape Breton Highlands. The strongly acid soil is similar to other Podzolic soils of the region except for the presence of gibbsite in the silt and clay fractions. In the saprolite, feldspar and b…
In order to obtain a better fundamental understanding of factors responsible for an excellent improving effect of rare earths addition on the high temperature oxidation resistance of Ni–Cr alloys, the electrical conductivities of sintered Cr2O3 doped with various amounts of La2O3, Y2O3 and NiO were measured in the tem…
The crystal structure of the title compound [Cu(bipy)2(CN)][NO3]·2H2O has been determined by X-ray analysis. It crystallises in the monoclinic space group, P21/n with a= 9.263(3), b= 24.678(4), c= 10.123(3)Å, β= 109.83(8)°, and Z= 4. The five-co-ordinate CuN2N2C chromophore has a distorted trigonal-bipyramidal stereoc…
A laboratory apparatus for investigating the spunbonding process is described. Filaments emerging from a spinneret are drawn by high velocity air moving through an aspirator. The dynamics of the process are specified and the air drag is experi mentally determined. Friction factor/Reynolds number relationships are deve…
The crystal and the molecular structure of the title compound has been determined using three-dimensional X-ray diffractometer data involving 7 045 independent reflections. The compound crystallizes in the monoclinic space group I2/c with eight formula units [(CuL2)4]·9CH3OH in a unit cell with dimensions a= 27.062(5)…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic phase transitions in dibromo(4H-1,2,4-triazole)copper(II) and related copper(II) complexes as studied by nitrogen-14 nuclear quadrupole resonance and magnetic susceptibility measurementsTetsuo Asaji, Hideki Sakai, and Daiyu NakamuraCite this: Inorg. Chem. 1983, 22,…
The highly conducting electrocrystallized mixed valence [Ni(dmit)2](NBu4)0.29 complex (H2dmit = 4,5-dimercapto-1,3-dithiole-2-thione) shows an unususl two-dimensional structure as shown by X-ray diffraction methods and anisotropic conductivity measurements.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAb initio MO study of nickel(0) complexes: stereochemistry of Ni(PH3)2L (L = H2CO or (CO)2) and comparison of coordinate bonds of various ligandsShigeyoshi Sakaki, Kazuo Kitaura, Keiji Morokuma, and Katsutoshi OhkuboCite this: Inorg. Chem. 1983, 22, 1, 104–108Publication Dat…
The tetrahedrally close-packed structure of the μ-phase of Co7Mo6 has been investigated by the many-beam imaging with [110] axial illumination. Twinnings, stacking faults and other structure defects have been revealed in terms of characteristic coordination polyhedrons with the aid of multislice computations. Occurren…
Up to 4.7% ZnO can be incorporated into the crystalline lattice of C 3 S. Five allotropic forms (i.e. T I , T II , M I , M II , and R) can be stabilized at room temperature, depending on the amount of ZnO. When heated to high temperature, the C 3 S‐ZnO solid solution decomposes and ZnO escapes from the crystalline lat…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTwo-stage polybenzimidazole synthesis via poly(azomethine) intermediatesEberhard W. Neuse and Mohamed S. LoonatCite this: Macromolecules 1983, 16, 1, 128–136Publication Date (Print):January 1, 1983Publication History Published online1 May 2002Published inissue 1 January 1983…