Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The effect of some phenyl phthalimide derivatives on the corrosion of carbon steel in 0.5 M H 2 SO 4 solution was studied using weight loss and galvanostatic polarization techniques. The percentage inhibition efficiency was found to increase with increasing concentration of inhibitor and with decreasing temperature. I…
Mesoporous material RH-MCM-41 was synthesized with rice husk silica by a hydrothermal method. It was used as a support for bimetallic platinum−iron catalysts Pt–Fe/RH-MCM-41 for phenol hydroxylation. The catalysts were prepared by co-impregnation with Pt and Fe at amounts of 0.5 and 5.0 wt.%, respectively. The RH-MCM-…
PCL-based shape memory polyurethane ionomers with quaternarized pyridine moieties incorporated through molecular extension were synthesized. These polyurethanes were specifically designed as low-temperature thermoplastic anti-bacterial orthotic materials. A commercialized orthotic material was employed for comparison.…
We present a technique involving the use of pulsed anodization for porous silicon (PS) thin-film fabrication on low doped substrates, for which the interface roughness and porosity gradients usually observed in such films can be eliminated. The work presented includes a detailed characterization of the effects of duty…
For plasma polymerized (PP) thin films, many practical optical, electronic, sensing, and bio-applications are closely related to their surface properties. In particular, the surfaces of many PP films have a strong affinity for oxygen and moisture. Therefore, three different types of monomers which do not contain oxyge…
The mechanical and thermodynamic characteristics of nanocrystalline (NC) titanium have been experimentally studied under the conditions of dynamic compression at a strain rate of (2–5) × 10 3 s −1 . The samples of NC titanium were cut from a rod processed by equal-channel angular pressing and had a characteristic grai…
Part 1 Welding technology and design to prevent weld cracking: Selection of weld-crack resistant stainless steels Robust welding technologies for ferrous alloys Design against cracking in ferrous weldments A discussion of the current procedures for design of welds against fatigue. Part 2 Weld crack behaviour, evaluati…
We report heat capacity measurements of the pnictide materials SmFeAsO 1-xFx, NdFeAsO, LaFeAsO1-xFx and LiFeAs. For SmFeAsO1-xFx, with x close to 0.1, we use 3He measurements to demonstrate a transfer of entropy from the peak at TN to a previously unidentified ∼2 K feature, which grows with increasing doping. Our resu…
Abstract We have designed a variety of functional metalloporphyrin nanoclusters, connected via covalent or noncovalent linkages, since a discovery of fused bismetalloporphyrins [Ar3P]2(II) and [Ar3P]2(III) (Schemes 1–10 include symbols of the compounds), which have a strong π-electronic interaction over the bisporphyr…
Here we present atomistic-based multi-scale simulation studies of a magnetically active array of carbon nanotubes to illustrate the concept of mechanomutability. We show that applying external fields, it is possible to change the nanostructure and to induce a desired mechanical response. Direct numerical simulations a…
Electrochemical reactions can exhibit considerable asymmetry, with the polarization behavior of oxidation at a given metal|electrolyte interface differing substantially from that of reduction. The reference-less, microcontact electrode geometry, in which the electrode overpotentials are geometrically constrained to th…
The decay behavior of , , and phosphors, which exhibit similar stoichiometries but different structures, differed significantly, even at the same activator concentration. Such differences in decay behavior cannot be elucidated by the traditional energy-transfer model based on homogeneous distribution of activators in…
Single-walled carbon nanotubes (SWNTs) were dissolved in a basic aqueous (NaOH) solution through the formation of a complex with folic acid. Water-solubilisation of SWNTs by folic acid is superior to that by guanosine 5′-monophosphate (GMP). The addition of diluted hydrochloric acid to the folic acid–SWNT mixture resu…
In analogy to an electrical diode, a thermal rectifier transports heat more easily in one direction than in the reverse direction. Among various possible nanoscale rectification mechanisms, a ballistic rectifier relies on asymmetric scattering of energy carriers, as has been suggested for phonon transport in a sawtoot…
Maintaining nuclear competencies in the nuclear industry and nuclear regulatory authorities will be one of the most critical challenges in the near future. As many nuclear experts around the world are approaching retirement, the potential exists for the loss of a substantial amount of critical nuclear knowledge and co…
Nitinol is a newly developed biomaterial that is gaining popularity in many biomedical applications. It has been reported that nitinol would not induce an inflammatory response and repulsion by the immunization after implantation in the human body. Besides, nitinol is a kind of shape memory alloy, which can memorize s…
Amino carbon nanohorns (CNH–NH2) are covalently and non-covalently functionalized with tetrabenzoic acid porphyrin (H2P(CO2H)4) forming dispersible nanohybrids in aqueous solution; the nanohybrids are characterized by spectroscopy and electron microscopy. Photoinduced electron-transfer processes of the nanohybrids of…
Elastic pentacopper molecular chains, [Cu5(panapy)4X2] (X=Cl (), Br ()) and [Cu5(panapy)4]X'2 (X'=BF4 (), PF6 ()), were prepared using a naphthyridine-modulated N6-donor ligand, panapy2-, and showed magnetically coupled, dynamic rearrangement of five Cu(II) ions switched by the presence/absence of halide termination.
Novel sesquiterpene, named crossostephin (1), and coumarin, named biscopoletin (2), together with four known compounds, artesin, tanacetin, scopoletin, and scopolin, were isolated from the 70% ethanolic extract of the whole herbs of Crossostephium chinense (L.) Makino. Their structures were determined by spectroscopic…
In order to improve the adhesion strength of the DLC coating, Fine Particle Peening (FPP) treatment was employed as pretreatment for DLC coatings. FPP treatment was performed using SiC shot particles, and then the AISI316L steel was DLC-coated. The FPP treatment increased the surface roughness of the specimen, and a S…