Materials Literature
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Metastable Al 86 Cr 14 , Al 86 Mn 14 , and Al 86 Fe 14 were prepared by rapid quenching from the melt at a rate of approximately 2 × 10 6 K/s. The X-ray measurements of all three alloys show similar non-Bravais structures. Broadened diffraction peaks for the Al–Fe alloy suggest a crystallite size of about 60 Å. Therma…
Abstract Generally, sorption isotherms for gases like CO 2 in glassy polymers are concave to the pressure axis, whereas in the rubbery state these isotherms are linear for gases or sometimes convex to the pressure axis for more condensable vapors. Examples of CO 2 isotherms are reported here that show at low pressure…
The giardins are a family of approximately 30000 Mr structural proteins found in microribbons attached to microtubules in the disc cytoskeleton of Giardia. After examining the solubility of giardins in various agents, a method has been developed to extract these polypeptides and subsequently precipitate them selective…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFluorescence study of factors affecting the complexation of poly(acrylic acid) with poly(oxyethylene)Bonumil Bednar, Znoumei Li, Yuhui Huang, Lih Chung Patrick Chang, and Herbert MorawetzCite this: Macromolecules 1985, 18, 10, 1829–1833Publication Date (Print):October 1, 198…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTantalum organometallics containing bulky oxy donors: utilization of tri-tert-butylsiloxide and 9-oxytriptyceneRobert E. LaPointe, Peter T. Wolczanski, and Gregory D. Van DuyneCite this: Organometallics 1985, 4, 10, 1810–1818Publication Date (Print):October 1, 1985Publicatio…
Coherent transient effects due to phase modulation of recoilless \ensuremath{\gamma} radiation are considered both theoretically and experimentally. Transients are observed in transmission experiments when the incident radiation field interferes with the induced polarization of the M\"ossbauer absorber. The transient…
Breathable fabrics facilitate the loss of water vapor from clothing and reduce condensation. Three varieties, proofed cotton, microporous, and hydrophilic polypropylene, are measured for water vapor permeability, hydrostatic head, abrasion, and bending length. In general, breathability is insufficient to prevent conde…
Theory of Chain Packing in Amphiphilic Aggregates, Page 1 of 1 < Previous page | Next page > /docserver/preview/fulltext/physchem/36/1/annurev.pc.36.100185.001143-1.gif
Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamics of spin-state interconversion and cooperativity for ferric spin-crossover complexes in the solid state. 4. Pyruvic acid thiosemicarbazone complexMark D. Timken, Scott R. Wilson, and David N. HendricksonCite this: Inorg. Chem. 1985, 24, 21, 3450–3457Publication Date…
Abstract Blends of poly(ethylene oxide) (PEO) and poly(vinyl acetate) (PVAc) show a unique value of the glass transition temperature, intermediate between that of plain polymers. The addition of PVAc to PEO causes a depression in both the spherulite growth rate ( G ) and the overall kinetic rate constant ( K n ). Such…
Abstract The mean time spent by a macromolecule at a solid/liquid interface is analyzed in the region of adsorption saturation. The method consists of carrying out preliminary adsorption with radioactively labeled high‐molecular‐weight polyacrylamide and subsequently exposing the surface to a solution of unlabeled pol…
A simplified algebraic expression for biofilm kinetics is developed. This mathematical model assumes Monod‐type biological kinetics and diffusive mass transport. The algebraic expression relates the concentration of substrate at the biofilm surface, and the thickness of the biofilm to the substrate utilization rate. T…
Abstract Melt mixtures of a polyarylate based on bisphenol A and tere/isophthalates were made with poly(ethylene terephthalate), several cyclohexane dimethanol‐based polyesters, polycarbonate, and the poly(hydroxy ether) of bisphenol A. The phase behavior was determined using classical methods. With minimum time and t…
Abstract Wood fibers of aspen in the form of chemithermomechanical pulp (CTMP) has been used as reinforcement in polyethylene (PE). The secant modulus, tensile strength, energy, and elongation at yield were measured. It was found that the mechanical properties of the composite were higher than those of PE by a factor…
A simplifed method which requires only a single mirror for making guided-wave gratings (periodic, chirped, and curved) is described, and the properties of gratings fabricated by this method are reported.
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The ground state structure of Si3 is found to be cyclic (1A1, C2v symmetry) with an apex bond angle of ≂80°. The linear form, analogous to the known structure of C3, is found to be a saddle point which transforms without activation to the cyclic structure. There is a low-lying triplet state (3A′2, D3h symmetry) which…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA theoretical study of the heats of formation of silicon hydride (SiHn), silicon chloride (SiCln), and silicon hydride chloride (SiHnClm) compoundsPauline Ho, Michael E. Coltrin, J. S. Binkley, and C. F. MeliusCite this: J. Phys. Chem. 1985, 89, 21, 4647–4654Publication Date…
Abstract Most rheological and rheo‐optical properties of suspensions such as viscosity and light‐scattering intensities can be expressed in terms of the average orientation and/or the average concentration distribution of the suspended particles. In general one can distinguish several distinct regimes: (i) infinitely…