Materials Literature
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A technique based on the transformation in positive semidefinite form of the Hamiltonian (Ĥ) is developed to allow the study of the enlargement possibilities of the emergence domain of a given state. For this reason the calculation of exact ground states for the polyphenylene type of non-integrable chains is performed…
This study analytically analyzes the changes in the temperature profile of a homogenous and isotropic medium having the same thermal parameters as a muscular tissue, due to the heat released by a single magnetic nanoparticle (MNP) to its surroundings when subject to different magnetic field profiles. Exploring the tem…
N, N′-Bis(4-phenoxybenzoyl)-4,4′-diaminodiphenyl sulfone (BPBDAS) was prepared by the condensation of 4,4′-diaminodiphenyl sulfone with 4-phenoxybenzoyl chloride in N, N-dimethylacetamide. Novel copolymers of poly(ether ketone ketone) (PEKK) and poly(ether ether ketone ketone) containing amide and sulfone linkages (PE…
A new strain of alkaline protease producing Bacillus bacterium was isolated from an alkaline soil sample and was characterized. The bacterium was identified as Bacillus subtilis based on 16S rRNA sequencing and phylogenetic tree analysis. The organism was coded as B. subtilis AKRS3. The growth curve of the organism wa…
Abstract 4-O-methylglucuronoxylans isolated from Eucalyptus grandis and Eucalyptus urophylla kraft black liquors (KBLs) were chemically characterized by Fourier transform infrared spectroscopy (FT-IR), size exclusion chromatography (SEC), and nuclear magnetic resonance (NMR) spectroscopy. Doses of alkali charge, expre…
Controlling exhaust gas temperature in a dual-stage catalyst system improves by a factor of three (or more) its capability to tolerate air-fuel ratio (AFR) variability and maintain compliance with stationary engine emission standards enforced in CA. This system is ideally suited for combined heat and power (CHP) gener…
A procedure for quantitative time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) analysis of the re‐oxidation thermally‐reduced of iron oxide particles in a ceramic matrix is discussed. Iron oxide is reacted with yttria stabilized zirconia (YSZ) to create a composite that facilitates the high‐temperature reducti…
Nanoparticles (NPs) are known to interfere with many high-throughput cell viability and cell proliferation assays, which complicates the assessment of their potential toxic effects. The aim of this study was to compare viability and proliferation results for colloidal silica (SiO2 NP; 7 nm) in the RAW 264.7 mouse macr…
This paper describes an approach for the early combination of material characterization and toxicology testing in order to design carbon nanofiber (CNF) with low toxicity. The aim was to investigate how the adjustment of production parameters and purification procedures can result in a CNF product with low toxicity. D…
Thin films of epitaxial SrTiO3 grown on silicon exhibit compressive in-plane strain that may stabilize ferroelectricity in this normally non-ferroelectric material. We investigate this possibility by using an ultra-high vacuum atomic force microscope to measure the local force response of coherently strained SrTiO3 fi…
Human adult heart harbors a population of resident progenitor cells \nthat can be isolated by Sca-1 antibody and expanded in culture. These \ncells can differentiate into cardiomyocytes and vascular cells in vitro \nand contribute to cardiac regeneration in vivo. However, when directly \ninjected as single cell suspen…
In-use vehicles which are high emitters (HEVs) make a large contribution to the emissions inventory. It is not known, however, whether HEVs share common emissions characteristics, and particularly the effect of ethanol blends. We study this by first examining laboratory measurements of exhaust and evaporative emission…
A new family of coordination polymers, {[Cu(btm)2(H2O)2](NO3)2(H2O)4} n (1, btm = bis(1,2,4-triazol-1-yl)methane), {[Cu(bte)2(H2O)2](NO3)2} n (2, bte = 1,2-bis(1,2,4-triazol-1-yl)ethane), [Cu(btp)2(NO3)2] n (3, btp = 1,3-bis(1,2,4-triazol-1-yl)propane), and {[Cu(btb)2(H2O)2](NO3)2} n (4, btb = 1,4-bis(1,2,4-triazol-1-…
Yttria-stabilized zirconia (YSZ) thin films have been deposited on a nickel-based substrate by a laser-assisted plasma coating technique at atmospheric pressure. The substrate is heated by an atmospheric plasma torch to 800 °C to form a thermally grown oxide layer and is increased to 1000 °C during film deposition. Th…
Selective electrocatalytic oxidation of hydrocarbons to alcohols, epoxides or other (higher value) oxygenates should in principal present a useful complementary anodic half-cell reaction to cathodic generation of fuels from water or CO(2) viz. an alternative to oxygen evolution. A series of new basket-handle thiolate…
Abstract A series of poly(sodium‐4‐styrene sulfonate) functionalized graphene/manganese dioxide (PSS‐GS/MnO2) composites as electrode materials for supercapacitors are prepared via a simple and facile route. The morphology and microstructure of the as‐prepared samples are characterized by field‐emission scanning elect…
Abstract The thermal conductivity of polypropylene (PP) composites filled with Al(OH)3 and Mg(OH)2 was measured by means of the stable flat measuring instrument at different testing temperatures. The effective thermal conductivity of the composites was estimated by applying the thermal conductivity equation proposed p…
We have recently developed a new type of porous silicon we name as porous silicon colloids. They consist of almost perfect spherical silicon nanoparticles with a very smooth surface, able to scatter (and also trap) light very efficiently in a large-span frequency range. Porous silicon colloids have unique properties b…
Transparent Tm,Ho:YAG ceramic with excellent optical properties was fabricated by solid-state reaction method using high-purity commercial powders as raw materials. Optical absorption and 2.0 μm emission spectra of the ceramic specimen have been studied. The strongest emission corresponds to 5 I 7 → 5 I 8 transition o…
New bis‐hydrazine lanthanide complexes with 3‐acetoxybenzoic acid (3‐abH) of formula, [Ln(3‐ab)3(N2H4)2]·xH2O where Ln = La, Ce, Pr and Gd and x = 0; Ln = Nd and Sm and x = 1, and monohydrazine complexes of some trivalent lanthanides with 4‐acetoxybenzoic acid (4‐abH) of formula, [Ln(4‐ab)3(N2H4)]·H2O where Ln = La, C…