Materials Literature
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Nonphosphorylating nicotinamide adenine dinucleotide (phosphate)- [NAD(P)-] dependent aldehyde dehydrogenases share a number of conserved amino acid residues, several of which are directly implicated in catalysis. In the present study, the role of Glu-268 from nonphosphorylating glyceraldehyde-3-phosphate dehydrogenas…
N, N, N -Tris[ p -( N -oxyl- tert -butylamino)phenyl]amine ( N ) was obtained as dark violet plates by lithiation of tris(4-bromophenyl)amine, followed by reaction with 2-methyl-2-nitrosopropane and oxidation of the resulting tris(hydroxyamine) with Ag 2 O. An X-ray crystal and molecular structure analysis of the mono…
Anisotropic wood flour (WF) particles, composed of fiber bundles, were melt compounded in a twin screw extruder at 200°C together with poly(propylene) (PP) in the presence of maleic anhydride-grafted poly(propylene) (PP-g-MA) and maleic anhydride-grafted poly-(styrene)-block-poly(ethene-co-1-butene)-block-poly(styrene…
Cold work accelerates stress corrosion cracking (SCC) growth rates in Alloy 600 (UNS N06600). However, the variation in crack growth rates generated from cold-worked material has been significant, and the effect has been difficult to quantify. A study was performed in hydrogenated water adjusted to pH 10.2 to evaluate…
Continuous casting of non-ferrous metals has been practised for well over 100 years. It has many advantages over static ingot and book mould casting, the most important being improved yield, reduced energy consumption and reduction of manpower, with a consequent reduction in cost. This book shows how the prrocess can…
The effect of the incorporation of Al-Tschermak’s molecule to the trioctahedral potassium mica annite {K}[Fe 3 ]<AlSi 3 >O 10 (OH) 2 on local and average structure has been investigated by hydrothermal synthesis, structure refinement of X-ray powder diffraction data, Mössbauer and infrared spectroscopy. The vari…
A series of π-conjugated polymers and copolymers containing 1,4-dioxo-3,6-diphenylpyrrolo[3,4-c]pyrrole (also known as 2,5-dihydro-3,6-diphenylpyrrolo[3,4-c]pyrrole-1,4-dione) (DPP) and 1,4-phenylene units in the main chain is described. The polymers are synthesised using the palladium-catalysed aryl-aryl coupling rea…
Solid structures consisting of layers of different materials created at elevated temperatures usually exhibit substantial residual stresses. These stresses are caused by intrinsic strains in addition to thermal strains, and originate from the bonding of the layers, which generates internal forces and moments that must…
The grain-size effect on the phase transition induced by pressure in PbS was studied by in situ high-pressure electrical resistance and synchrotron radiation x-ray powder diffraction measurements. The mean transition pressure of the B1-to-B16 phase transformation was found to be 6.3±1.3 GPa in 8±1 nm PbS while it is 3…
Acid‐subsoil amelioration is complicated by differences in the efficacy of lime and gypsum across the diverse soil environments in which the problem occurs. This study was conducted to explain long‐term growth responses to lime and gypsum on a Plinthic Paleudult of mixed clay mineralogy. In a 10‐season experiment that…
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTFunctionality of Polymeric Micelle Hydrogels with Organized Three-Dimensional Architecture on SurfacesKazunori Emoto, Michihiro Iijima, Yukio Nagasaki, and Kazunori KataokaView Author Information Department of Materials Science and Technology Science University of Toky…
Traditionally, depth resolution in diffraction experiments is obtained by inserting pinholes in both the incoming and diffracted beam. For materials science investigations of local strain and texture properties this leads to very slow data-acquisition rates, especially when characterization is performed on the level o…
This article reports the synthesis and copolymerization of 6-hydroxynon-8-enoic acid lactone. The ring-opening polymerization of this lactone-type monomer bearing a pendant allyl group led to new homopolymers and random copolymers with ε-caprolactone and L,L-lactide. The copolymerizations were carried out at 110 °C wi…
This study describes the selective removal of cell and cell residues from small and large diameter blood vessels for the preparation of tubular collagen:elastin matrices intended for small diameter vascular prosthesis. The results showed that total or partially devitalized collagen:elastin matrices may be conveniently…
We present results on magnetotransport measurements of a series of La0.75Sr0.25MnO3 films with thickness ranging from 32 to 3300 Å. Films were fabricated using pulsed laser deposition onto SrTiO3 and LaAlO3 substrates. The substrate-film lattice mismatch causes strain in ultrathin films which diminishes with increasin…
Dense PbTiO 3 ceramics consisting of submicrometer‐sized grains were prepared using the spark‐plasma‐sintering (SPS) method. Hydrothermally prepared PbTiO 3 (0.1 μm) was used as a starting powder. The powder was densified to ≳98% of the theoretical X‐ray density by the SPS process. The average grain size of the spark‐…
The photosensitized oxidations of the olefins, trans- 1,2-dimethoxystilbene (DMOS), trans -stilbene (TS), and trans,trans -1,4-diphenyl-1,3-butadiene (DPB) as well as the amine 2,2,6,6-tetramethylpiperidine (TMP) in mixed surfactant vesicles were investigated. The sensitizer was either a hydrophobic dye, tetraphenylpo…
The rigorous microscopic theory of equilibrium crystal shapes has made enormous progress during the last decade. We review here the main results that have been obtained, both in two and higher dimensions. In particular, we describe how the phenomenological Wulff and Winterbottom constructions can be derived from the m…
Most mesogens formed by banana-shaped molecules exhibit liquid-like smectic phases. Here we present the synthesis and properties of homologous series of derivatives of resorcinol and 2,6-disubstituted pyridine. One of these classes of bent-core molecules displays the nematic phase.
Stable nematic phases are reported for binary mixtures of p-alkylbenzoic acids (nBA; where n = 1,2,3 denotes methyl, ethyl and propyl), p-alkoxybenzoic acids (nOBA, n = 1,2), and p-fluorobenzoic acid, which separately do not exhibit liquid crystalline phases. The mesophase stability increases in equimolar mixtures of…