Materials Literature
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The aquasonolytic rate constants of cyclic C6H(X), aliphatic C6H(X), thioethers, thiophenes, and N-heterocyclic compounds show over a 90-fold variation under identical conditions of ultrasonic irradiations. Henry's Law constant of the substrate has a substantial effect on the aquasonolytic rate; a higher Henry's Law c…
The cooperativity effects on both the electronic energy and NMR indirect nuclear spin-spin coupling constants J of the linear complexes (HCN)n and (HNC)n (n = 1-6) are discussed. The geometries of the complexes were optimized at the MP2 level by using the cc-pVTZ basis sets. The spin-spin coupling constants were calcu…
The metastable pitting behavior inside crevices of Alloy 625 (UNS N06625) and Alloy 22 (UNS N06022) was examined to obtain insight into differences in crevice corrosion susceptibility between Alloys 625 and 22. Metastable corrosion event rates recorded as current-time transients were found to increase with increasing…
Abstract Amphiphilic conetworks (APCN) are new materials composed of covalently bonded otherwise immiscible hydrophilic and hydrophobic polymer chains. The amphiphilic nature of these new crosslinked polymers is indicated by their swelling ability in both hydrophilic and hydrophobic solvents. Special synthetic techniq…
Biodegradable fibers of poly(L-lactic acid) (PLLA) and poly(D,L-lactide-co-glycolide) (PLGA) that encapsulated a water-soluble drug were created by a patented technique consisting of wet-spinning a water-in-oil emulsion. These fibers are 2.4% by mass drug, which is slowly released, making these fibers potential candid…
Controlled garment wear trials are used to evaluate comfort response to a well-characterized set of heat-resistant workwear materials. Multiple categories of perceived comfort reactions to garment wear in diverse conditions are explained in terms of measured fabric properties assessed in Part I. The important role of…
We introduce a systematic method for constructing a class of lattice structures that we call ``partial line graphs''.In tight-binding models on partial line graphs, energy bands with flat energy dispersions emerge.This method can be applied to two- and three-dimensional systems. We show examples of partial line graphs…
Structures undergo different loading conditions during their service life. Impact is one of the typical cases of loading. In this study, an analytical method is presented for the prediction of ballistic impact behavior of thick composites based on wave theory and energy balance between the projectile and the target. F…
Studies have demonstrated that polymeric biomaterials have the potential to support osteoblast growth and development for bone tissue repair. Poly(beta-hydroxybutyrate-co-beta-hydroxyvalerate) (PHBV), a bioabsorbable, biocompatible polyhydroxy acid polymer, is an excellent candidate that, as yet, has not been extensiv…
Tungsten oxide is one of the most important transition metal oxide materials, which possesses some unique properties such as electrochromic, optochromic, and gaschromic properties. In this paper, we report a simple method for synthesizing high quantity tungsten oxide nanoribbons by oxidizing a tungsten plate under moi…
Amine-terminal polystyrene (PS-NH 2 ) was reacted with an anhydride-terminal poly(methyl methacrylate) (PMMA-anh-pyr) at the interface between quiescent PS and PMMA layers, annealed for various times up to 2 h at 175 °C. The concentration of the PS-NH 2 in the PS layer was varied from 10% to 100%. By virtue of pyrene…
The dielectric spectra of the glass former, m-fluoroaniline (m-FA), at ambient pressure show the presence of a secondary relaxation, which was identified in the literature as the universal Johari-Goldstein (JG) beta relaxation. However, published elastic neutron scattering and simulation data [D. Morineau, C. Alba-Sim…
Poly(vinylbenzyl chloride) (PVBC) nanospheres synthesized via emulsion polymerization are used as the substrate for subsequent attachment of viologen moieties. The viologen-functionalized nanospheres can undergo photoinduced reaction with gold ions resulting in the formation of well-dispersed gold nanocrystals with di…
High-quality Al-doped n -type ZnO ( n -ZnO:Al) epilayers have been grown by an rf-magnetron sputtering technique combined with a rapid thermal annealing (RTA) process. The electrical and optical properties of as-deposited samples are considerably improved upon annealing at 900°C for 3 min in nitrogen ambient. The impr…
The coherent dynamics of carriers bound to bent cylindrical surfaces is modeled by numerically solving the open-boundary Schr\"odinger equation recast in surface curvilinear coordinates. The effect of the surface topology on the transmission properties is addressed for bent cylinders and smooth junctions of cylinders…
In this work, an improved version of a brittle fracture model, based on the formation of nitric acid in service through corona discharges, ozone, and moisture, is presented and is used to explain several different modes of brittle fracture. Similar to Part I, we refer throughout this article to the insulators as nonce…
The lattice thermal conductivities of TiCoSb-based half-Heusler alloys are presented in the temperature range between 300 and 900K. A phenomenological model calculation of the high-temperature lattice thermal conductivities of these alloys was derived based on the Klemens–Callaway theory [Phys. Rev. 119, 507 (1960); i…
We have reported the ionic relaxation for different compositions of $x{\mathrm{Ag}}_{2}\mathrm{O}\ensuremath{-}(1\ensuremath{-}x)\mathrm{Te}{\mathrm{O}}_{2}$ conducting glasses in wide temperature and frequency ranges. We have explained the composition dependence of the conductivity and the activation energy in terms…
Four different polypropylene (PP) resins are extruded using the tubular blown and cast film processes. The resin morphology is observed by SEM and the effect of extrusion processing variables on the morphology is investigated. Melt rheological experiments are also carried out to characterize the polymer melts. It has…
Zinc availability and mobility in soils is controlled by its interaction with the soil matrix and amendments. Contradicting evidence has been reported for factors influencing Zn behavior in soils. This study was conducted to investigate the effect of common cations and anions on Zn sorption and lability characteristic…