Materials Literature
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A novel synthesis of the title compound, C2S3N3 (1) is reported. X- and K-band EPR spectra on dilute solutions of 1 indicate delocalisation of the unpaired spin density over both heterocyclic rings in agreement with DFT calculations. An XRPD study indicates that it crystallises in two morphologies with both phases for…
The current state of investigations of the problem of providing first mirrors (FMs) for diagnostic systems in a reactor-grade fusion device is summarized. Results obtained in simulation experiments that have been conducted during recent years in several laboratories are presented. Attention is concentrated on two proc…
An algorithm for the determination of the space-group symmetry of a crystal from powder diffraction data, based upon probability theory, is described. Specifically, the relative probabilities of different extinction symbols are assessed within a particular crystal system. In general, only a small number of extinction…
Abstract Solutions of both basic and acidic dyes were subject to sonolysis, electrolysis, and sonoelectrolysis. Only basic dyes were decolorized by ultrasound alone. Removal of the acidic dye Sandolan Yellow required the use of an electrooxidation process. The rate of electrochemical decolorization in the absence of u…
The preparation of nanoscale MS particles (M = Zn, Cd, Hg) with the polyol method is described. Starting with metal acetates and thiourea as precursors, by heating at 180 °C in diethylene glycol, crystalline particles 30–250 nm in size can be yielded. The resulting particle size is examined in DEG–H2O suspension apply…
Studies of pressure induced phase transformations of ZnS nanoparticles using diamond anvil cells and synchrotron radiation were carried out to 20.0 GPa. Nanoparticles initially in the zinc-blende and wurtzite phases both transformed to the NaCl phase under the application of pressure. The zinc-blende particles, which…
Recombinant Escherichia coli strains harboring heterologous polyhydroxyalkanoate (PHA) biosynthesis genes were shown to accumulate unusually large amounts of PHA. In the present study, integrated cellular responses of metabolically engineered E. coli to the accumulation of poly(3-hydroxybutyrate) (PHB) in the early st…
This study investigated the basic biocompatibility aspects of two types of polypyrrole (PPy)-coated polyester fabrics for possible use as vascular prostheses. These PPy-coated fabrics, PPy-Phos and PPy-Plas, were sterilized with ethylene oxide (EO) and the following characterizations were performed: surface morphology…
A novel one-dimensional copper(II) compound [Cu(L)(μ1,3-N3)(ClO4)]n [L = tridentate Schiff base, formed by condensation of pyridine-2-aldehyde and 1-(2-aminoethyl)piperidine] has been synthesized and structurally characterized; it exhibits ferromagnetic interaction via end-to-end azido (μ1,3-N3) linkages, as rationali…
In this paper we report an experimental study on the conditions for droplet breakup in concentrated emulsions under simple shear flow. We present a set of experiments where the ratio between drop and matrix viscosity was varied from 0.1 to 22 and the volume fraction ranged from 0% to 70%. It was observed that the crit…
The cationic copolymerization of regular soybean oil, low-saturation soybean oil (LoSatSoy oil), or conjugated LoSatSoy oil with styrene and divinylbenzene initiated by boron trifluoride diethyl etherate (BF3·OEt2) or related modified initiators provides viable polymers ranging from soft rubbers to hard, tough, or bri…
Preface 1. Overview and applications of diffractive optics technology J. Allen Cox 2. Variational methods for diffractive optics modeling Gang Bao and David C. Dobson 3. High-order boundary perturbation methods Oscar P. Bruno and Fernando Reitich 4. Mathematical reflections on the Fourier modal method in grating theor…
The influence of long-term corona on the degradation of non-ceramic composite insulator (NCI) housing materials was studied. Polymer samples were obtained from full-scale NCI, employing three different housing materials, namely silicone rubber, ethylene propylene diene monomer rubber and a blend of EPDM with silicone…
A series of bis[octakis(alkylthio)phthalocyaninato]rare-earth-metal(III) discotic compounds, [(CnS)8Pc]2M (M = Eu(III), Tb(III), Lu(III); n = 8, 10, 12, 14, 16, 18), has been synthesized. The mesomorphic and supramolecular structures have been investigated by using differential scanning calorimetry, polarization micro…
The interaction between poly(ethylene glycol) (PEG) and water was studied by differential scanning calorimetry (DSC). The DSC curves of PEG–water systems were classified into three groups according to the difference in molecular weight. The melting peaks of eutectic mixture appeared for PEG with molecular weight highe…
Oxygen reduction reaction (ORR) kinetics were investigated on hulk synthesized analogues of Al-Cu, Al-Cu-Mg, and Al-Cu-Fe-Mn intermetallic phases with and without chromate conversion coating (CCC) in 0.1 M Na 2 SO 4 + 0.005 M NaCl (pH 6) with minimal levels of total dissolved chromate. The results were compared to AA…
Manganese oxide thin films were deposited onto transparent and conductive tin oxide-coated glass substrates by electrochemical deposition (at 1.2 V vs. Ag/AgCl) and subsequent chemical [electrolysis/chemical (EL/C)] processing in a manganese ammine complex solution at pH 8. Characterization by X-ray diffraction (XRD)…
The objective of this work was to elucidate the mechanism by which polyaniline (PANI) films passivate stainless steel surfaces in highly corrosive solution. A variety of experimental methods, including measurements of the open-circuit potential, Auger depth profiling, and the scanning reference electrode technique (SR…
The electrochemical behavior of the intermetallic phase was studied using thin film compositional analogs prepared by flash evaporation. Characterization by scanning electron microscopy, atomic force microscopy, and Auger electron spectroscopy depth profiles indicated that the films were single phase, laterally homoge…
We present a second gradient elastoplastic model for strain-softening materials based entirely on a finite element displacement formulation. The stress increment is related to both the strain increment and its Laplacian. The displacement field is the only field needed to be discretized using a C1 continuity element. T…