Materials Literature
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The stability of beta alumina in fully developed Zebra Na / FeCl 2 cells under long‐term cycling has been proven. In the early stages of development of the Na / FeCl 2 cell, some problems in the form of increased resistances were encountered under certain extreme conditions of temperature and voltage. While these diff…
Alkyl-substituted azobenzene-4-carboxylic acids are potent differentiation inducers of human promyelocytic leukemia cell line HL-60 to mature granulocytes. Their structure-activity relationships are very similar to those of other retinoidal benzoic acids which are generally represented by 4 and named retinobenzoic aci…
We present a new real-space renormalization-group (RSRG) scheme for finding exactly the local Green's functions (LGF) for electrons in a quasiperiodic Fibonacci chain. It has been possible to construct the RSRG transformation, which, apart from renormalizing the Fibonacci chain globally, also preserves the local envir…
New structural and calorimetric data for samples of NiAl 2 O 4 quenched from 600° to 1560°C are presented The spinel remains stoichiometric for all heat treatments. Based on the refinement of X‐ray powder patterns, it is shown that the degree of disorder, defined as the mole fraction of tetrahedral sites occupied by A…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLow-temperature investigation of the ferrimagnetic chains MnM' (EDTA).cntdot.6H2O [M' = cobalt, nickel, and copper(II)]: thermal and magnetic propertiesE. Coronado, M. Drillon, P. R. Nugteren, L. J. De Jongh, D. Beltran, and R. GeorgesCite this: J. Am. Chem. Soc. 1989, 111,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSequence distribution in poly(dimethylsiloxane-co-methylvinylsiloxanes)Maris J. Ziemelis and John C. SaamCite this: Macromolecules 1989, 22, 5, 2111–2116Publication Date (Print):May 1, 1989Publication History Published online1 May 2002Published inissue 1 May 1989https://pubs…
Abstract The effect of physical aging on viscoelastic properties was studied for several cross‐linked epoxies in the glassy state. Tensile creep and tensile stress relaxation were measured during isothermal physical aging, following rapid quenching of samples annealed above the glass‐transition temperature ( T g ). Th…
Abstract In cast film extrusion, the polymer melt is extruded through a slit die, slightly stretched in air and then cooled on a chill-roll. An important part of the present work was devoted to the development and application of a thermomechanical model of stretching in air and of a purely thermal model of cooling on…
Abstract α,ω‐Dihydroxy‐terminated‐PMMA was synthesized by the bulk polymerization of methyl methacrylate in the presence of a functional “iniferter,” viz., N , N ′‐diethyl‐ N , N ′‐bis(2‐hydroxyethyl)thiuram disulfide (DHTD). The kinetics of the polymerization were studied by determining the polymerization rate as a f…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDonor-acceptor properties of ambient-temperature chloroaluminate meltsThomas A. Zawodzinski Jr. and Robert A. OsteryoungCite this: Inorg. Chem. 1989, 28, 9, 1710–1715Publication Date (Print):May 1, 1989Publication History Published online1 May 2002Published inissue 1 May 198…
The purpose of this study was to relate changes in collagen composition with the mechanical properties of aortas of spontaneously hypertensive rats (SHRs). SHRs and normal Wistar-Kyoto (WKY) rats were killed at ages 6 and 20 weeks, and their aortas were removed. A portion of each aorta was used for determination of pa…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHeterobimetallic gold-palladium phosphine cluster complexes. X-ray crystal and molecular structure of [Au8Pd(PPh3)8](NO3)2Larry N. Ito, Brian J. Johnson, Ann M. Mueting, and Louis H. PignoletCite this: Inorg. Chem. 1989, 28, 11, 2026–2028Publication Date (Print):May 1, 1989P…
Aluminum anodization has been studied in the basic ambient temperature molten salt . The anodization process was studied as a function of chloride anion concentration. Two different anodization processes are observed with onset potentials of approximately −1.1 and 0 V. The more cathodic anodization involves formation…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTotal synthesis of K-13Dale L. Boger and Daniel YohannesCite this: J. Org. Chem. 1989, 54, 11, 2498–2502Publication Date (Print):May 1, 1989Publication History Published online1 May 2002Published inissue 1 May 1989https://doi.org/10.1021/jo00272a003RIGHTS & PERMISSIONSArticl…
An experimental investigation of phenomena associated with the oblique hypervelocity impact of spherical projectile on multisheet aluminum structures is described. A model that can be employed in the design of meteoroid and space debris protection systems for space structures is developed. The model consists of equati…
A comparison is made of two different approaches to the description of phase transitions in the ${A}_{2}$${\mathrm{BX}}_{4}$ structure (space group ${D}_{4h}^{17}$, I4/mmm) due to rigid octahedral tiltings. The lower-symmetry subgroups due to coupling of the ${K}_{13}$\ensuremath{\tau}^ $^{7}$ (${X}_{2}^{+}$) and ${K}…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn off-lattice constant-pressure simulation of liquid polymethyleneRichard H. BoydCite this: Macromolecules 1989, 22, 5, 2477–2481Publication Date (Print):May 1, 1989Publication History Published online1 May 2002Published inissue 1 May 1989https://pubs.acs.org/doi/10.1021/ma…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolid-state and solution stability of poly(anhydrides) and poly(esters)Abraham J. Domb and Robert LangerCite this: Macromolecules 1989, 22, 5, 2117–2122Publication Date (Print):May 1, 1989Publication History Published online1 May 2002Published inissue 1 May 1989https://pubs.…
Sintered, polycrystalline ZnO ceramics with copper as the only additive exhibit highly nonlinear current-voltage characteristics. Increasing nonlinearity index (α=4–45) with Cu concentration of 0.01–1 mol % is also variable with respect to ceramic processing methods. Incorporation of Cu in the ZnO lattice is indicated…
Quenching and annealing studies have been carried out to investigate the effects of the A-site occupancy in the tungsten bronze structure on the polarization, pyroelectric coefficient, dielectric permittivity, and phase transition (Curie temperature range) behavior of ferroelectric relaxor Sr1−xBa x Nb2O6 (1−x = 0.75,…