Materials Literature
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In this study we report the synthesis and characterisation of cellulose ferulate, lipoate and alpha-tocopherulate, and their ability to inhibit lipid peroxidation in rat-liver microsomal membranes, induced in vitro by two different sources of free radicals: tert-butyl hydroperoxide and 2,2'-azobis-(2-amidinopropane).…
Abstract Gels were prepared by cooling dilute solutions (2% wt/wt) of 12‐hydroxystearic acid (12‐HSA) in canola oil and storing them at 30 °C for 24 h. The gel's in‐situ supramolecular network structure was imaged using four techniques: polarized light microscopy (PLM), 3‐dimensional deconvolution polarized light micr…
The present work is concerned with the study of the characteristics of plain-woven fabric produced with cotton–acrylic high-bulk yarns. Cotton–acrylic blended bulked yarns of various yarn counts, proportion of shrinkable acrylic fibre and twist levels have been prepared by relaxing shrinkable component of the yarns us…
The mollusk shell is a hard tissue consisting of calcium carbonate and organic matrices. The organic matrices are considered to play important roles in shell formation. We have previously identified a prismatic layer-specific protein named Prismalin-14, which consists of 105 amino acid residues and includes four struc…
AAO films with a novel six-membered ring structure were prepared by constant current anodization. The six-membered ring contains smaller pores, formed at the triple junction sites of the larger pores. The interpore distance was reduced from the usual 85 nm to 50 nm, doubling the usual pore density. These novel AAO fil…
Electronic structure calculations reveal the presence of several shallow minima and maxima in the energy-vs-magnetization curves, which otherwise are surprisingly flat. The main implication---a fast magnetization and/or demagnetization process with little hysteresis---is of primary importance for the performance of ${…
In this study, a self‐constrained BaTiO 3 material system, composed of a low‐fire BaTiO 3 ‐based X7R (Δ C / C ±15% within −55° to 125°C) MLCC dielectric and a high‐fire, BaTiO 3 ‐based X7R MLCC dielectrics eliminated sintering aid that are laminated on both sides of the BaTiO 3 ‐based X7R MLCC, has been developed. The…
Computational docking approaches are important as a source of protein-protein complexes structures and as a means to understand the principles of protein association. A key element in designing better docking approaches, including search procedures, potentials, and scoring functions is their validation on experimental…
What we believe to be a new principle is introduced for the design and selection of gradient-index antireflection profiles that are effective over a wide range of incident angles as well as wavelengths at a given physical film thickness. It is shown that at oblique incidence the smoothness of the optical path of incid…
The interaction between the tetra-anionic porphyrin H2TPPS and its copper derivative, CuTPPS, with the tetra-cationic porphyrin H2T4 and its copper derivative, CuT4, leads, in aqueous solution, to the formation of remarkably stable and kinetically inert heteroaggregates. The aggregation process is under hierarchic con…
Chemical functionalization can help separate semiconducting from metallic single-walled carbon nanotubes (SWNTs). Depending on their geometry, SWNTs can be either metallic or semiconducting (see image). They are so far the only known material to possess this unique property. For electronic applications it is of vital…
Nanostructure-based leaf-like polyaniline (PANI) (see figure) has been fabricated successfully in the presence of surfactant F127. It is found that the building blocks of leaf-like PANI can be tuned from nanofibers (ca. 25 nm in diameter) to nanotubes (ca. 100 nm in diameter) with increasing monomer concentration. The…
Three Ba 8 Al 16 Ge 30 clathrate type I samples have been prepared using three different synthesis methods; flux growth, Czochralski growth, and stoichiometric mixing. The samples were characterized by X-ray powder diffraction, multi-temperature single-crystal X-ray diffraction, high-resolution low-temperature (20 K)…
Abstract The phenomenon of voltage generated from a soft sensor using polypyrrole in response to mechanical deformation is described and investigated. The sensor consists of two polypyrrole layers in contact with an electrolyte and operates in bending mode in air. The magnitude and sign of the induced voltage was foun…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Polyurethane foam is commonly used as padding in car seats despite some problems concerning comfort and recycling. Compared with polyurethane foam, textile seat padding is easier to recycle; so textile padding is a good candidate to substitute foam padding as regulations on recycling have become more stringent on car…
Fibre diffraction can provide structural information about polymers and biopolymers that is unobtainable using other methods. This method has been used to elucidate the structures of many polymers, biopolymers and protein assemblies. Extracting structural information from fibre diffraction patterns is a major challeng…
The self-assembly of asymmetric diblock copolymers confined within cylindrical pores is studied using the self-consistent-field theory. The cylinder-forming asymmetric diblock copolymer is chosen to be near the cylinder−gyroid phase boundary in the intermediate segregation region. This choice makes the self-assembled…
Hyperbranched polymers with both highly branched structures and numerous vinyl functional groups have been synthesized via reversible activation/deactivation controlled polymerization of multifunctional vinyl monomers. By controlling the competition between propagation and reversible termination using a deactivation e…
We describe time-domain measurements which provide new information about the large-angle nonlinear dynamics of nanomagnets excited by spin-transfer torque from a spin-polarized current. Sampling-oscilloscope measurements, which average over thousands of experimental time traces, show that the mean reversal time for sp…