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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEquilibria and dissociation kinetics of lanthanide complexes of diaza crown ether carboxylic acidsC. Allen Chang, Peter H. L. Chang, V. K. Manchanda, and S. P. KasprzykCite this: Inorg. Chem. 1988, 27, 21, 3786–3789Publication Date (Print):October 1, 1988Publication History…
Abstract The concept of thermally reversible crosslinking was investigated by using poly[bis(trifluoroethoxy)phosphazenes] with different percentages of cyclopentadienylethoxy and dicyclopentadienyldiethoxy substituent groups. The resultant structures of these polymers are discussed and the phenomenon of reversible cr…
Silicone rubber has great advantages as a contact lens material because of its very high oxygen permeability, softness, and excellent mechanical strength and durability. Practical application is hampered by inherent characteristics of elastomers, i.e., high tackiness and highly hydrophobic surface properties. By apply…
Abstract The rate of dissolution of akaganéite in HCl increased with time over the bulk of the reaction leading to a sigmoid dissolution vs. time curve. The bulk of the dissolution of lepidocrocite could be described by the cube root law. Transmission electron microscopy examination of partly dissolved crystals of aka…
Article Structural and magnetic properties of the clinopyroxenes NaFeSi2O6 and LiFeSi2O6 was published on October 1, 1988 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 183, issue 1-4).
The so-called group index of refraction may be measured by observing the shift of the visibility envelope when a sample is inserted into one arm of a Twyman–Green interferometer. Although the group and phase index curves are related, the phase index cannot be directly calculated from the group index because there are…
The relationship of TL response and glow curve structure of LiF(Mg,Cu,P) to the concentration of dopants has been investigated systematically. The experimental results have shown that the relative height and light integration of the main glow peak depend strongly upon the technique of preparing the TL material and the…
A Monte Carlo calculation of diffuse scattered intensity of p-polarized light from a randomly rough Ag grating shows enhancement in the backward direction, as predicted in perturbation theory by the selective summation of maximally crossed diagrams for the resonantly excited surface polaritons.
The series of the title compounds were prepared by solid-state reactions. The phase transitions between room temperature and 1450 °C were investigated by DTA and X-ray diffraction. All compounds undergo at least one reversible phase transition in the solid state. The Rb containing compounds, with the exception of thos…
Abstract Amplified optical image storage has been demonstrated in polymer liquid crystals (PLC). A small amount (< 5 mol%) of a low molecular weight mesogen with a photoresponsive moiety, 4-butyl-4′-methoxyazobenzene (BMAB), was doped in the films of polyacrylates with mesogenic side chain, poly(4′-methoxypheny…
The self‐discharge rate of an all‐solid‐state battery having a Li negative electrode, a solid polymeric electrolyte, and a polypyrrole‐polyethylene oxide positive composite electrode was studied under various conditions. Both the self‐discharge rate and the electrochemical utilization of the polypyrrole increase rapid…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular structures and magnetic properties of .mu.-phenolato binuclear copper(II) complexes incorporating chloro, hydroxo, and azido exogenous bridging ligandsAzdine Benzekri, Patrick Dubourdeaux, Jean Marc Latour, Jean Laugier, and Paul ReyCite this: Inorg. Chem. 1988, 27…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Cite Icon Cite Search Site Citation M. E. Armacanqui, R. A. Oriani; Technical Note: Effect of Hydrogen on the Pitting Resistance of Passivatin…
Predictions of the glass-forming ability and the glass composition range of transition metal alloys are made using a semiempirical theory. The treatment is based on comparing the Gibbs free energies of the competing crystalline and amorphous phases, which requires knowledge of the differences in Gibbs free energy betw…
Flexural testing was investigated as a method of studying the creep of ceramic materials at elevated temperatures. Three techniques were used to evaluate the steady‐state stress exponent: two of them were based on the measurement of the surface curvature of a flexure specimen after testing; the third was based on the…
It is demonstrated with computer simulations that a bimodal distribution (narrow and broad) of reflection profile broadening effects, such as crystallite size and microstrain, can lead to several spurious results when the profiles are modeled by single pseudo-Voigt functions in Rietveld refinement (RR), e.g. mixing pa…
Etude de deux series de verre du systeme ternaire Na 2 O-Al 2 O 3 -SiO 2 . Dans la premiere serie, le long du joint Na 2 O-SiO 2 , Na entre dans la masse fondue comme cation modificateur provoquant la formation d'oxygenes non pontes et la depolymerisation progressive de la structure. La seconde serie est liee au joint…
Supported and unsupported γ-Al2O3 and TiO2 ceramic membranes have been prepared by sol-gel techniques from alkoxide precursors. Several physico-chemical properties of these materials have been determined. N2 sorption analysis has been used to determine pore size distributions and mean pore sizes. Particle sizes of sol…
The Enzyme IIfru of the phosphoenolpyruvate- (PEP-) dependent phosphotransferase system (PTS), which catalyses the uptake of fructose and its concomitant phosphorylation to fructose 1-phosphate by Escherichia coli, is specified by a gene designated fruA. The nucleotide sequence of a 2.5 kb PvuII restriction fragment s…
ABSTRACT Growth of Aspergillus flavus and Penicillium notatum was inhibited by a fungicide coupled to a packaging film. A chemical method was employed to attach a fungicide containing amino groups to an ionomeric packaging film containing pendent carboxyl groups. Dicyclohexylcarbodiimide was used as the coupling agent…