Materials Literature
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Optimal conditions for two-dimensional gel electrophoresis of total cellular proteins from Myxococcus xanthus were established. Using these conditions, we analyzed protein patterns of heat-shocked M. xanthus cells. Eighteen major spots and 15 minor spots were found to be induced by heat shock. From N-terminal sequence…
The synthesis and liquid crystalline properties of new Schiff 's bases (series 3a-f) and azo compounds (4a-f) incorporating pyridine and 1,3,4-thiadiazole rings are reported. The first homologues in the series of Schiff's bases (3a-c) show a monotropic mesophase and the homologues 3d-f display an enantiotropic SmA pha…
Abstract The hybrid process of homogeneous gas‐phase selective noncatalytic reduction (SNCR) followed by selective catalytic reduction (SCR) of nitric oxide (NO) was investigated through experimentation and modeling. Measurements, using NO‐doped flue gas from a gas‐fired 29 kW test combustor, provided data that allowe…
Abstract The nucleation of polyoxymethylene (POM) crystallization using attapulgite was studied using differential scanning calorimetry, polarized light microscopy, wideangle X‐ray diffration and mechanical testing. Two isothermal crystallization kinetic equations were employed to describe the crystallization of virgi…
Photoluminescence (PL) properties of nanostructured Si-based films produced by pulsed laser ablation in a residual gas are studied. Two types of PL signals have been identified. Signals of the first type are sensitive to the ablation conditions with the PL peak position depending on the gas pressure during the deposit…
A psychrotrophic bacterium, Pseudomonas fluorescens BM07, which is able to accumulate polyhydroxyalkanoic acid (PHA) containing large amounts of 3-hydroxy-cis-5-dodecenoate unit up to 35 mol% in the cell from unrelated substrates such as fructose, succinate, etc., was isolated from an activated sludge in a municipal w…
We investigated major physical-chemical characteristics and benthic algae of different alpine lotic systems comprising streams and lake outlets of rhithral and kryal origin over an annual cycle. We also evaluated the structure of the algal communities and its relation to environmental characteristics for the different…
Starting from the functionalized Josiphos derivatives (R)-1-[(S)-2-(diphenylphosphino)-1'-(dimethyl-3''-aminopropylsilyl)-ferrocenyl]ethyldicyclohexylphosphine ((R)-(S)-3), (R)-1-[(S)-2-(diphenylphosphino)-1'-(hydroxy methyl) ferrocenyl]ethyldicyclohexylphosphine ((R)-(S)-4), and (R)-1-[(S)-2-(diphenylphosphino)-1'-(3…
Abstract MnS nanocrystals have been prepared by a colloidal synthesis route through the reaction of MnCl 2 and S[Si(CH 3 ) 3 ] 2 in trioctylphosphineoxide. The nanocrystals were characterized using X‐ray diffraction and transmission electron microscopy. The magnetic properties were studied with SQUID magnetometry. X‐r…
Genes responsible for the synthesis of poly(3-hydroxybutyrate) (PHB) in Azotobacter sp. FA8 were cloned and analyzed. A PHB polymerase gene (phbC) was found downstream from genes coding for beta-ketothiolase (phbA) and acetoacetyl-coenzyme A reductase (phbB). A PHB synthase mutant was obtained by gene inactivation and…
Stability and fatigue are terms often referred to when discussing the durability of the shape memory effect. This paper considers the meaning of these terms and how they relate to the macroscopic memory response and the microstructural accommodation response of NiTi alloys. The results of previous workers are analysed…
Neodymium (III) oxide nanocrystals synthesized by the inverse microemulsion technique were dispersed in sol–gel titania/organically modified silane (ormosil) composite thin films for photonic applications. X-ray diffraction analysis and transmission electron microscopy observation show that the neodymium oxide nanopar…
This article is about the coating of thin titanium dioxide film by sputter deposition. When irradiated with solar light, thin titanium dioxide film exhibits high oxidizing power and provides sterilizing, cleaning, decomposing, and hydrophylic effects. This technique has already been used for coating building walls by…
Several foams of different cell-size, including Scott Industrial polyurethane foam with large cells (20 pores per inch, ppi, or 1.2 mm per pore, black), medium cells (65 ppi, or 0.4 mm per pore, green), and near-microcellular (100 ppi, 0.25 mm per pore, white), were processed over various time and temperature regimes…
First‐principles calculations based on density‐functional theory (DFT) in the pseudopotential (PP) method have been performed for aluminum oxynitride with the spinel‐type structure (γ‐alon). The calculations show that the face‐centered sublattice of the anions is distorted, even for the hypothetical “ideal”γ‐alon spin…
In the push for renewable energy and cleaner fuels, hydrogen is a ideal candidate — at least, when the issues of how it can be stored safely and cheaply are resolved. This article examines the current research focus of industry and research institutions alike on the utilization of carbon nanostruMures as a hydrogen st…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTBlock Copolymer Microspheres Containing Intricate Nanometer-Sized Segregation PatternsZhihua Lu, Guojun Liu, and Futian LiuView Author Information Department of Chemistry, University of Calgary, 2500 University Dr., NW, Calgary, Alberta, Canada T2N 1N4 Cite this: Macromolecules…
We use atomic-level simulation methods to determine the zero-temperature structure and properties of coherent KNbO3/KTaO3 superlattices. We find that the in-plane behavior is essentially bulk-like with an abrupt jump in the polarization at the interfaces. By contrast, the polarization in the modulation direction is co…
A silicon nitride ceramic with unidirectionally aligned β‐Si 3 N 4 elongated grains (UA‐SN) was fabricated by sintering the extruded Si 3 N 4 green body with a small amount of rodlike β‐Si 3 N 4 seed. The effect of anisotropy in microstructure on tribological properties was investigated, compared with a fine‐grained S…
In electron-beam and photolithography, local heating can change the resist sensitivity and lead to variations in significant critical dimension. Existing models suffer from the lack of experimental data for the thermal properties of the polymer resist films. We present the measurements of both out-of-plane and in-plan…