Materials Literature
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Electrochemical impedance, cyclic voltammetry, and chronoamperometry have been used for characterization of the medium-temperature half-cells (Sys 1), (Sys 2), and (Sys 3) at various electrode potentials and temperatures. Analysis of the impedance data shows that the kinetically mixed process is probable, characterize…
A preparative route for a nanocrystalline CdSe/polymer nanocomposite that is easily integrated into photovoltaic device fabrication has been developed. Microwave assisted synthesis is used to initiate the reaction of relatively safe, inexpensive and air stable precursors. Particles size may be varied from 20 Å to 60 Å…
investigated by measuring its conductance and mass changes by using a fourprobe method, elemental analysis, and X-Ray fluorescence (XRF) technique. The prepared films were exposed to hydrogen halides, hydrogen cyanide, hydrogen sulphide, halogens, acetic acid, mono-, di-, and trichloroacetic acid, formaldehyde, hexach…
InnoPol, a poly((D,L)-lactic-co-glycolic acid) [PLGA] 65/35 scaffold manufactured by special gas foaming methods in Korea, was subjected to tests to evaluate the degradation and tissue compatibility characteristics and long-term systemic toxicity in mice and rats. C57BL/6 mice and SD rats were implanted subcutaneously…
Characterization of the stability of ceramic suspension for slurry introduction in inductively coupled plasma optical emission spectrometry (ICP-OES) and its application to the analysis of aluminium nitride (AlN) was reported in this paper. Stability and homogeneity suspensions of μm sized AlN and nm sized AlN, as the…
The copper(II) complexes, [CuII 3(μ3-OH)(μ-pz)3(Hpz)(Me3CCOO)2]·(Me3CCOOH)2 (1) (Hpz = pyrazole) and CuII(Hpz*)2(Me3CCOO)2 (2) (Hpz* = 3,5-dimethylpyrazole), were obtained from the reactions of Cu(NO3)2·3H2O with Me3CCOOK and Hpz/Hpz* in ethanol. The complex 1 is made up of a trinuclear core [Cu3(μ3-OH)]5+ with a near…
We fabricated nanotube (CNT) composites by coating the CNTs with an amorphous layer using metallorganic chemical vapor deposition followed by postannealing at a relatively low temperature of 350°C. It was found that the kind of gas used during the postannealing process should affect the nanostructure of the composites…
It is shown that hydrogen peroxide enhances substantially selective reduction of NOx to nitrogen with hydrocarbons over Ag/alumina catalysts.
In this letter, we present a preliminary study on fabrication of ZrO2 nanofibers by electrospinning a sol-gel precursor solution with subsequent calcination process. The resultant nanofibers have an average diameter less than 40 nm and can be produced uniformly and repeatedly. Nanofibers with diameter as small as 13 n…
A technique for controlling the thickness profile of a thin film in physical vapor deposition systems is reported. The technique uses a novel mask design with apertures of varying dimension to selectively deposit the required film thickness at predetermined locations across the aperture of the substrate. The technique…
ROLDÁN-PALLARÉS, MANUELA MD, PhD; AMBIT AVILA, MARÍA ISABEL PhD; REFOJO, MIGUEL F. DSc Author Information
Abstract A synthetic hydromagnesite obtained from an industrial by‐product rich in magnesium oxide was employed and evaluated as a non‐halogenated flame retardant for poly(ethylene‐co‐vinyl acetate). The filler was characterized with different techniques (such as specific surface area, TGA, particle morphology and siz…
Recently we have developed a novel type of membrane based on poly(ether imide) (PEI) which is considered for biomedical application. To improve its physical and biological performance it was modified by blending with poly(benzimidazole) (PBI). In the present study both membranes were characterized in terms of their ph…
Condensation of 4,6-dichloro-2-phenylpyrimidine-5-carbaldehyde with pyrrole enables the synthesis of a number of expanded porphyrins of which the [26]hexaphyrin was easily isolated and successfully converted into the decasubstituted doubly N-fused hexaphyrin variant.
A rational and versatile method to synthesize bicyclosiloxane of design structures is presented. The method is used to synthesize a new, asymmetric bicyclo[7.5.3]octasiloxane and other bicyclosiloxanes.
This is one of a series of studies on the reversal of the helix sense of polyaspartates originated from the pioneering work of Goodman and his associates in 1960s. Poly(beta-p-chlorobenzyl L-aspartate) (PClBLA) is one of the well-studied polyaspartate derivatives in both solution and the solid state. The chemical stru…
The present paper presents the results of a thermoanalytical investigation on the kinetics of the aluminothermic reduction of Nb2O5 under non-isothermal conditions. Simultaneous differential thermal analysis (DTA) and thermogravimetry (TG) technique were used. It was determined the minimum molar ratio Nb2O5:Al for the…
International Tables for Crystallography is the definitive resource and reference work for crystallography and structural science. Each of the eight volumes in the series contains articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned…
The results of a 2-year study of corrosion and the corrosion protection of ductile iron (DI) pipe are reported. The study includes field and laboratory tests of short- and long-term polarization rates under various conditions, corrosion-rate reduction with corresponding cathodic current criterion, and the corrosion pr…
ABSTRACT Corn is one of the most important food and industrial crops in the United States. Zein constitutes about half of the endosperm proteins in corn. Potential applications of zein include use in fibers, adhesives, inks, cosmetics, textiles, and chewing gum. Recently, attempts have been made to utilize zein for fo…