Materials Literature
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We describe application of a novel refinement method for an accurate determination of the chemical diffusion coefficient, D , and the generalized kinetic parameter, Λ, from experimental potentiostatic intermittent titration technique (PITT) data suited for a variety of electrochemically doped electroactive polymers an…
In this paper, we apply the Double Negative Material in some basic applications, including waveguide, rectangular patch antenna and disc patch antenna. By analyzing theoretically we find that the sizes of these equipments can be greatly reduced by using multi-block (which may include both double positive and double ne…
Abstract First and second‐generation rigid dendrimers based on polyphenylated tetrahedral adamantane cores with four or sixteen peripheral phosphonate moieties, PD1 and PD2, respectively, were synthesized and characterized. Further reaction of the dendritic phosphonates with tungstic acid in the presence of hydrogen p…
Four tetracatenar (L1–L4) and one hexacatenar (L5) ligands, derived from the diaza-18-crown-6 framework, are synthesized and characterized. In these ligands, the amine functions are fitted with benzoyloxybenzyl linker groups, attached either with a carbonyl function (L1) or a methylene bridge (L2–L5) and bearing alkox…
Fleshing wastes from tanneries create major environmental problems. Despite their considerable fat content, these wastes do not find important usage. Their disposal is also troublesome and costly. We have investigated the possible use of this fat in the production of biodiesel (fatty acid methyl esters) by transesteri…
ABSTRACT Starch acetate nanocomposite foams with four organoclays (Cloisite 30B, 10A, 25A, and 20A) were prepared by melt‐intercalation methods. The structural properties, thermal behaviors, and mechanical properties were characterized by X‐ray diffraction (XRD), scanning electron microscopy (SEM), differential scanni…
The calculation of the crystalline index (CI) of polymeric materials by X-ray diffraction (XRD) may be rendered difficult by the number of overlapping crystalline phases and amorphous halos that contribute to the diffraction pattern. Rilsan Polyamide-11 (PA-11), produced by Arkema Inc., is a semi-crystalline polymer w…
PURPOSE: The primary objective of this study was to determine the maximum tolerated dose (MTD) of CT-2103 (poly L-glutamic acid-paclitaxel) in combination with carboplatin in patients with histologically proven solid tumors that were either refractory to conventional treatment or for which no conventional therapy was…
Sol-gel derived (SD) NiO-YSZ particles were formed from metallic nitrate and butoxide precursors, and after heat-treatment at 1000°C, the NiO and yttria-stabilized zirconia (YSZ) average particle sizes were found to be less than 50 and 30 nm, respectively, as measured using X-ray diffraction and transmission electron…
The mechanism of microbiologically influenced corrosion (MIC) on carbon steel (CS) by the bacteria Desulfovibrio desulfuricans subs. desulfuricans was studied using hydrogen permeation, open-circuit potential, and cathodic polarization techniques, in a concentrated culture medium containing bacteria cells (107 cell/mL…
Chitosan/poly(acrylic acid)/poly(ethylene glycol) diacrylate (PEGDA) composite membranes with a bi-layer configuration were prepared and their potential application as an antibacterial material was examined. A two-step process was adopted. A dope consisting of PEGDA, acrylic acid (AA) and a photoinitiator was cast and…
Advantageous properties including optical transparency, high thermal conductivity, and high carrier mobility make natural diamond an attractive choice for a range of optical and electrical devices. However, its hardness and chemical inertness provide a significant challenge for device processing. We demonstrate the ab…
We have fabricated and tested planar reflectors exhibiting an omnidirectional stop band centered near 1750 nm wavelength. The reflectors are comprised of multiple layers of Ge33As12Se55 chalcogenide glass and polyamide-imide polymer. Glass layers were deposited by thermal evaporation and polymer layers were deposited…
Mesoporous organosilicas (MOs) represent a promising class of organic–inorganic nanocomposites for a broad range of applications like catalysis, sensing, separation, or microelectronics. Their distinct feature is the presence of organic groups incorporated into the channel walls of a mesoporous structure. Here, we pre…
The effect of Mn content on the microstructure and mechanical properties of two ultrafine grained 0.2%C-Mn steels has been investigated. The ultrafine grained microstructure was produced by use of large strain warm deformation and subsequent annealing. The final microstructure consists of fine cementite particles with…
Research Article| January 01, 2005 Microporous Framework Silicate Minerals with Rare and Transition Elements: Minerogenetic Aspects Igor V. Pekov; Igor V. Pekov 1Faculty of Geology, Moscow State University 119899 Moscow, Russia, igorpekov@mtu-net.ru Search for other works by this author on: GSW Google Scholar Nikita V…
Well-ordered organic–inorganic mesoporous films are prepared using an original two-step synthesis and compositions up to 50 mol% methyltriethoxysilane (MTES). These materials exhibit the three different mesostructures (2D-hexagonal, 3D-hexagonal and cubic) previously observed in the pure silica system with significant…
Eu-doped BaTiO3 ceramics (EBT) were prepared by the cold-pressing ceramic process on the basis of the formula Ba1-xEuxTi1-x/8O3 (x=0.01-0.05, 0.10). The effects of Eu doping on the structure, microstructure, dielectric and ferroelectric properties of BaTiO3 ceramics were studied. EBT ceramics have a high density, a lo…
The influence of tungsten on an amorphous-to-crystalline transition, leading to formation of anatase, and dielectric properties is examined for anodic oxides on Ti–W alloys. The structural change, which occurs at voltages of on high-purity titanium, and provides sites for generation of high-pressure gas oxygen bubbles…
A new family of perovskite-based materials has been investigated in the search of alternative anodes for solid oxide fuel cells (SOFCs). Although these phases show a pseudocubic unit cell by X-ray diffraction, the structure is far more complex with extra oxygen beyond the perovskite stoichiometry accommodated in local…