Materials Literature
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An unusual k = [½ ½ ½] magnetic structure is reported in Sr2FeO3F at low temperature. The magnetic structures of LaBaFeO4, LaSrFeO4, LaCaFeO4, Ca2FeO3Cl, Ca2FeO3Br, Sr2FeO3F, Sr2FeO3Cl, Sr2FeO3Br and solid solutions in the series Sr2Fe1−xCoxO3Cl have been examined and only Sr2FeO3F exhibits this structure. The La2CuO4…
In this paper, we investigate the polyvinylferrocene (PVF) redox behavior in contact with a bathing solution containing L -glutamine (Gln) by electrochemical quartz crystal microbalance (EQCM). Our study shows that the interaction of PVF with Gln is dramatically different from PVF redox behavior in salt solutions, e.g…
Several stainless steels have been developed for the use as interconnect materials in solid oxide fuel cells in order to reduce costs, while maintaining the required performance. The materials however, are subjected to humid air, at high temperatures up to 800°C leading to enhanced oxidation. High temperature X-ray di…
Estimates of the rate of heat loss from animals to the environment are used to determine food requirements ofdomestic species in relation to weather or their need for shelter, and to establish the extent to which climate influences thebehavior and distribution of wild species. A mechanistic model was developed to pred…
This work reports on the investigation of nanosized CeO2-ZnO systems prepared by Pechini's method. The structural and morphological characterization of CeO2-ZnO systems as well as the characterization of CeO2 and ZnO separately, showed that the employed method result in powders with spheroidal particles whose size are…
During the first stage of a multi-year research program, BAE SYSTEMS and Ovonyx have designed, fabricated and tested a series of test chips to demonstrate full integration of a chalcogenide-based non-volatile memory element into a radiation hardened CMOS process. The test structures range from simple two- and four-poi…
Morphology- and size-controlled nickel powder was synthesized via the thermal decomposition of nickel oxalate, which was prepared by mixing a solution containing nickel chloride hexahydrate (NiCl2·6H2O) and aqueous ammonia (NH3·H2O) with a solution of sodium oxalate (Na2C2O4) under controlled conditions. Nickel precur…
An 800 nm-SiC powder (75 vol%) was mixed with a 30 nm-SiC powder (25 vol%) in a 0.05-0.3 M-Y(NO3)3 solution containing an Al2O3 powder of median size 0.2 μm at pH 5 to distribute homogeneously the sintering additives (Al2O3+ yttrium ions) around the SiC particles. In a 20 vol% SiC suspension, the network structure of…
Abstract The longitudinal electronic static first hyperpolarizability of model linear phosphorus–boron chains is investigated using ab initio tools, including dynamic electron correlation corrections. The polymer presents an extremely large first hyperpolarizability (1700 × 10 −30 esu per unit cell) that can be ration…
More than three-fourths of the unburned hydrocarbon (HC) emissions in a typical drive cycle of an automotive engine are produced in the initial 2 minutes of operation, commonly known as the coldstart period. Catalyst light-off plays a very important role in reducing these emissions. Model-based paradigm is used to dev…
A fast phase modulator based on ferroelectric liquid crystal (FLC) is demonstrated and its performances characterized. For uniform alignment and pure phase modulation, we propose a new FLC device configuration using short helical pitch material and homeotropic alignment structure. This device is driven by periodic in-…
The copper enzyme galactose oxidase (GOase, EC 1.1.3.9) catalyses the oxidation of D-galactose and other primary alcohols in air to the corresponding aldehydes and hydrogen peroxide. The current mechanistic hypothesis for this two-electron redox reaction involves a Cu(I)/Cu(II) couple and the reversible oxidation of a…
We present a computationally efficient single event Monte Carlo approach for calculating dose from electrons. Analog elastic scattering and inelastic energy-loss differential cross sections for electrons are converted into corresponding discrete cross sections that are constrained to exactly preserve low-order moments…
In response to the recent wide-scale applications of lnformation Technology (I/T) in the hospitality industry, this study analyzed articles in leading hospitality research journals, including the International Journal of Hospitality Management, Cornell Hotel and Restaurant Administration Quarterly, and the Journal of…
The title compound, [La(BTC)(H2O)6]n 1 (H3BTC = benzene-1,3,5-tricarboxylic acid), has been synthesized by the hydrothermal reaction of La(NO3)3·3H2O with H3BTC and Na2CO3, and its structure was determined by single-crystal X-ray diffraction. The crystal structure is of monoclinic, space group Cc with a = 11.5289(3),…
Systematic pre-oxidation experiments in the glass transition region have been carried out on iron bearing aluminosihcate glass fibres in air. The pre-oxidized fibres are up-scanned in a simultaneous thermal analyser to a temperature of 1273 Κ under atmospheric conditions in order to measure the increase in mass, which…
This review focuses on recent progress in the study of doped semiconductor nanocrystals prepared by direct solution chemical routes. The emphasis is on materials that can be prepared and handled as high-quality colloidal nanocrystalline suspensions, allowing them to be easily processed by a variety of conventional met…
In this project, the radiation induced cross-linking in low-density polyethylene (LDPE) samples irradiated with the different dose rates of 5 MeV electron beam in the dose range of 20 up to 200 kGy were investigated and compared. The dose rate values were ranged from 13 to 300 kGy/min. The cross-linking of the samples…
Insulating polymers and their composites have been widely used in various electric apparatus or cables. Recently, the effects of interfaces (metal/insulator or insulator/insulator interfaces) on electrical insulation have attracted much attention. However, interfacial phenomena in actual insulation systems and their p…
Markedly enhanced recyclability of osmium catalyst in asymmetric dihydroxylation has been achieved by using osmylated macroporous resins bearing both residual vinyl groups and quaternary ammonium moiety.