Materials Literature
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An extracellular protein with strong absorption at 406 nm was purified from cell-free culture fluid of latex-grown Xanthomonas sp. strain 35Y. This protein was identical to the gene product of a recently characterized gene cloned from Xanthomonas sp., as revealed by determination of m/z values and sequencing of select…
Continuous zirconia fibers with a nanometer ceramic structure and a tensile strength up to 2.8 GPa were fabricated by pyrolyzing polyacetylacetonatozirconium precursor fibers through a special atmosphere heat treatment. DSC‐TGA, GC‐MS, IR, SEM, and TEM were used to study the fiber transformation mechanism during heati…
Abstract A new aromatic asymmetrical ether diamine, 5‐(4‐aminophenoxy)‐1‐naphthylamine, was synthesized through the nucleophilic displacement of 4‐chloronitrobenzene with the potassium phenolate of 5‐amino‐1‐naphthol in dimethylformamide, followed by hydrazine palladium‐catalyzed reduction. A series of novel aromatic…
A completion of the three primary colours (red, green and blue (RGB)) in conjugated polymeric electrochromics is enough to produce any shade of desired colour for plastic displays. Until our first report about a green-coloured neutral conjugated polymer (CP) [G. Sonmez, C. K. F. Shen, Y. Rubin and F. Wudl, Angew. Chem…
The first two steps of methane dissociation on Rh(111) have been investigated using density-functional theory, focusing on the dependence of the catalyst's reactivity on the atomic coordination of the active metal site. We find that, although the barrier for the dehydrogenation of methane (CH4 --> CH3 + H) decreases a…
The effects of different concentrations of Mn 2+ , Mg 2+ , Al 3+ , Fe 3+ , La 3+ , and Nb 5+ on the dielectric and tunable properties of Ba 0.6 Sr 0.4 TiO 3 ceramics were investigated. It was found that doping in small amounts with acceptor ions such as Mg 2+ , Fe 3+ , and Al 3+ could meliorate the dielectric properti…
Laser-ablated Mg atoms react with molecular hydrogen to give magnesium hydrides during condensation in excess hydrogen and neon for characterization by matrix infrared spectroscopy. The observed absorptions are identified by isotopic substitution and theoretical calculations of vibrational fundamentals and assigned to…
The aim of the study is to determine and compare the pharmacokinetics and tissue distribution of Doxorubicin (Dox) delivered as solution or through nanoparticles after intravenous (i.v.) and intraperitoneal (i.p.) injection. Doxorubicin loaded poly(butyl cyanoacrylate) nanoparticles were synthesized by dispersion poly…
Dielectric relaxation and PVT measurements were carried out on propylene carbonate. From these, we show that thermal energy exerts a stronger influence than volume on the temperature dependence of the dynamic properties. Data obtained at all temperatures and pressures superimpose, when expressed as a function of T-1 V…
Microcellular polymer foams afford a wide variety of attributes relative to their dense analogues, and efforts remain underway to establish viable routes to generate foams with substantially reduced pore cell size and increased pore cell density. Barrier constraints are applied in the present work to achieve diffusion…
The achievement of both high strength and high electrical conductivity in bulk materials is challenging in the development of multifunctional materials, because the majority of the strengthening methods reduce the electrical conductivity of the materials significantly. At room temperature, dislocations have little sca…
A system for measuring charge distribution on an insulating spacer is developed. An electrostatic probe is set close to the spacer, and it moves along its surface maintaining a small gap. The accumulated charge is inversely calculated from the measured data by utilizing the relationship that is obtained through the nu…
Aligned single-walled carbon nanotubes (SWNTs) and hierarchical SWNT assembly were fabricated by electrospinning. The high fiber elongation and high DC electric field applied during the electrospinning process result in the orientation of the SWNTs along the axial direction of the fiber. The alignment of the electrops…
The low sensitivity is the major disadvantage of MRI as compared to PET. Therefore, amplification strategies are necessary for specific pathway labeling. This survey is aimed at exploring different routes to the entrapment of Gd(III) chelates in various type of cells at amounts sufficiently large to allow MRI visualiz…
Hydrogen-induced cracking (HIC) tests were performed on fourteen types of X65 line pipe steels in various environments in which the hydrogen sulfide (H2S) partial pressures (PH2S) were in the range from 1 × 10-5 MPa to 0.1 MPa and pH was in the range from 2 to 5. The conditions governing HIC occurrence were investigat…
Abstract In this paper, we explore the relationship between the nanoscale structure and electrochemical performance of nanoscale scrolls of vanadium oxides (vanadium oxide nanorolls). The vanadium oxide nanorolls, which are synthesized through a ligand‐assisted templating method, exhibit different morphologies and pro…
The delafossite structure (ABO 2 ) accommodates a wide range of transition and rare-earth cations on the B-site in combination with a short list of A-site cations. This paper reports the effects on defect chemistry and transport as a function of the B-site cation in copper-based delafossite materials, with CuScO 2 and…
This research developes a numerical model to predict skin burn injury resulting from heat transfer through a protective garment worn by an instrumented manikin exposed to laboratory-controlled flash fire exposures. This model incorporates characteristics of the simulated flash fire generated in the chamber and the hea…
Abstract The first successful preparation of chitosan-containing nanofibres was achieved by electrospinning of chitosan/poly(ethylene oxide) (PEO) blend aqueous solutions. The diameters of the nanofibres were in the range 40 - 290 nm and decreased with increasing chitosan content and decreasing total concentration. An…
The predictions of the mode-coupling theory of the glass transition (MCT) for the tagged-particle density-correlation functions and the mean-squared displacement curves are compared quantitatively and in detail to results from Newtonian- and Brownian-dynamics simulations of a polydisperse quasi-hard-sphere system clos…