Materials Literature
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We have studied the adsorptions of aqueous solutions of three kinds of surfactants, anionic (sodium dodecylbenzenesulfonate, SDBS), cationic (dodecyl trimethylammonium bromide, DTB) and a non-ionic (Triton X-100, TX-100), by chromium-containing leather waste. The results indicated that the anionic surfactant can be si…
Publisher Summary This chapter reviews the structural properties of disordered packings of equally sized spheres. It discusses and uncovers several specific features that are relevant for the understanding of the structure of amorphous systems. The most important concepts and the principal findings can be schematicall…
Many of the natural fibers offer excellent properties suitable for various applications in apparel and non-apparel areas. Spider silk is a filamentous natural protein fiber produced by the spiders. Dragline silk produced by the spider offers superior properties than many of the natural and synthetic fibers. The natura…
Ternary systems of inorganic Pt salts and oxides, ionic liquids and concentrated sulfuric acid are effective at catalyzing the direct, selective oxidation of methane to methanol and appear to be more water tolerant than the Catalytica reaction.
Abstract Research in materials with dimensions of the order of nanometers has made a huge impact on the scientific community in the past decade. Chemists play an important role in this area of research as they endeavor to prepare pure, crystalline, surface-derivatized nanoparticles, which can be processed in potential…
In the last few years, some monomers such as phenols, anilines, pyridines, naphtols, Schiff bases and azo phenols have been subjected to oxidative polycondensation (OP) using NaOCl, H2 O2 and air O2 as the oxidants in aqueous alkaline or aqueous acidic medium. This resulted in oligomers with potential useful propertie…
The synthesis of four new analogues of motexafin gadolinium (MGd), a gadolinium(III) texaphyrin complex in clinical trials for its anticancer properties, is described. These new derivatives contain either 1,2-diaminobenzene or 2,3-diaminonaphthalene subunits as the source of the imine nitrogens and bear multiple 2-[2-…
Abstract A composite medium consisting of two sublattices of dielectric spherical particles of high permittivity and different radii embedded in a dielectric matrix of smaller permittivity are considered. It has been shown that such a composite medium reveals properties of an isotropic double negative media (DNG) in a…
Aluminium(III) porphyrin-carboxylate complexes, including a porphyrin pentamer, have been characterised by NMR spectroscopy, MALDI spectrometry and single crystal X-ray diffraction; these complexes can also be coordinated by a sixth, nitrogenous, ligand to the aluminium(III) centre.
A pi-pi scaffolding framework that was assembled as a one-dimensional chain structure comprising alternating Delta- and Lambda-iron(II) chiral building units, [Fe(II)(Delta)Fe(II)(Lambda)(ox)2(phen)2]n, reveals spontaneous magnetization that gives rise to pronounced hysteresis loops below 10 K.
Pure aluminum and magnesium cube samples were heated at a specific temperature for a given time after being polished by abrasive papers. The amorphous layer that formed on the sample surface was transformed into a crystallized oxide film during the heating and holding period. We discuss how this thermally-formed oxide…
Poly(dimethyl siloxane) (PDMS) was bulk-modified to develop a new intra-cochlear electrode that can closely hug the inner wall of scala tympani (ST). The hydrophilicity of bulk and surface of PDMS was changed using a sequential method for preparation of interpenetrating polymer networks (IPNs). A series of IPNs, based…
The nanostructured TiNi-based shape-memory alloys were synthesized by severe plastic deformation (SPD), including high pressure torsion, equal-channel angular pressing, and multi-step SPD deformations (SPD plus cold rolling or drawing). It is found that the SPD processing changed the morphology of the martensite and t…
This study investigated the influence of atmospheric pressure plasma treatment on the surface properties and cell response of poly(L-lactide) (PLLA) samples. The samples were analyzed by means of X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), micro- and nanosurface roughness, water contact angl…
The use of a high speed video system allows one to precisely observe the cracking mechanisms, in particular if shear or tensile fracturing is taking place. The present experimental study on gypsum and marble specimens confirmed that tensile wing cracks (TWCs) are in most cases the first cracks to appear in fracture pr…
The effect of , , and inhibitor ions on the oxygen reduction reaction (ORR) was experimentally investigated on AA2024-T3 and selected castings containing intermetallic phases (i.e., Al–Cu–Mg and Al–Cu–Mn–Fe). All the inhibitors were found to reduce both the activation-controlled and mass-transfer-limited current densi…
Assessment of womeni?½s body beauty Breast measurement and sizing Innovations in bras Bra pattern technology Innovations in girdles Physical and physiological health effects of intimate apparel Pressure evaluation of body shapers Intimate apparel with special functions Performance evaluation of knitted underwear Proce…
Mesoporous Fe/SiO2 was synthesized as a carrier for magnetic drug targeting by using the sol–gel route and a chemical reduction method. It was confirmed that metallic iron clusters were formed and retained in the channels of the mesoporous silica by XRD and N2 adsorption. The magnetic properties and stability of mesop…
The commentary seeks to provide a brief history and perspective on the importance of crystal forms of pharmaceuticals as a means of achieving performance criteria. The expanding scope of crystal form selection, emergence of crystal engineering in pharmaceutical science and pharmaceutical co-crystals are topics of this…
The corrosion behaviors of Ti, Ti-6Al-7Nb and Ti-6Al-4V alloys, and an experimentally produced Ti-0.5Pt alloy in 0.05% to 2.0% concentrations of Acidulated Phosphate Fluoride (APF) solutions (corresponding to 226 to 9,050 ppm fluoride at pH 3.5 or 3.6) were examined. While the corrosion of Ti, Ti-6Al-7Nb and Ti-6Al-4V…