Materials Literature
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The nature of the Ti(IV) active site in heterogeneous titano−silica epoxidation catalysts is shown to be same as that of a Ti(IV)-centered site bound to soluble homogeneous silsesquioxane catalysts. A range of techniques, encompassing pre- and near-edge X-ray absorption spectroscopy and molecular dynamics calculations…
Bone morphogenetic proteins (BMPs) are biologically active molecules capable of eliciting new bone formation. In combination with biomaterials, these proteins can be used in a clinical setting as bone-graft substitutes to promote bone repair. To find new synthetic absorbable polymers with plastic nature that can be us…
The role of the potential energy landscape in determining the relaxation dynamics of model clusters is studied using a master equation. Two types of energy landscape are examined: a single funnel, as exemplified by 13-atom Morse clusters, and the double funnel landscape of the 38-atom Lennard-Jones cluster. Interwell…
Magnetic properties are systematically investigated for Cr-doped manganites ${R}_{1/2}{\mathrm{Ca}}_{1/2}(\mathrm{M}\mathrm{n},\mathrm{C}\mathrm{r}){\mathrm{O}}_{3}$ $(R=\mathrm{La},$ Nd, Sm, and Eu) with variation of the averaged ionic radius ${r}_{R}$ of the rare-earth ion, or the one-electron bandwidth W. Cr-doping…
Current-voltage and voltage-time characteristics of Al were studied in common contemporary Li battery electrolytes. Enhanced E AI +3 / A] electrolytes, including (C 2 H 5 ) 4 NC1 (TEAC) or A1C1 3 in several solutions of -butyrolactone (BLA) and acetonitrile (ACN), such as TEAC/BLA, TEAC/ACN, and concentration optimize…
Abstract Bariosincosite is a new barium vanadium phosphate hydrate from the Spring Creek Mine, near Wilmington, South Australia. The new mineral occurs as irregular clusters of pale green, very thin platey crystals up to 250 µm across and 2 to 5 µm thick. The tetragonal crystals are tabular on {001} and the other form…
Abstract Three new polyoxypregnane glycosides, gymnepregosides G, H, and I, together with four known compounds were isolated from the stems of Gymnema alternifolium. The structural elucidation were determined principally by spectral data, and assigned to be 12‐ O ‐cinnamoyl‐3β,5α,8β,12β,14β,17β,20‐heptahydroxy‐(20 S )…
Abstract The polyphosphazene platform allows the design and synthesis of a broad range of different polymers, some of which have special properties as biodegradable materials. Different polyphosphazenes are produced mainly by means of macromolecular substitution reactions carried out on a reactive polymeric intermedia…
Atmospheric corrosion of mild steel, copper and zinc was studied in SO 2 environment under dynamic flow conditions by weight loss measurements, and their corrosion prevention by the use of volatile corrosion inhibitors such as cyclohexylamine (CHA) and dicyclohexylamine (DCHA) is discussed. These studies assume import…
For the first time the flexible cyclopentyl ring is used to build mesogenic units, and thus a novel mesogen-jacketed liquid crystalline polymer (MJLCP) poly(dicyclopentyl vinylterephthalate) is synthesized. The polymer forms a stable mesophase which changes to an isotropic phase at 267°C. The formation of a stable mes…
Characterization of microstructures with features from submicrometers to hundreds of micrometers requires versatile methods. Profilometry and optical microscopy cannot cope with submicrometer features, and atomic-force microscopy, scanning-electron microscopy, and near-field microscopy are inherently slow, off-line me…
Abstract Experimental brackets (300–450°C) on Sb-Bi partitioning between stibnite-bismuthinites (Sb,Bi) 2 S 3 and sulfosalts in the AgSbS 2 –AgBiS 2 binary subsystem (α-Ag(Sb,Bi)S 2 , β-Ag 5 (Sb,Bi) 4 I (Sb,Bi) II S 10 ) and extant constraints are used to define mixing properties and standard state Gibbs energies of S…
In this study the effect of the aminofunctional silicone softeners on fabrics’ heat and moisture transport properties has been investigated by means of Alambeta and Permetest instruments. The silicone treated PES blended fabrics are warmer to the touch, but less comfortable as regards their reduced water‐vapour permea…
Abstract Investigation of the biodegradability of water soluble poly(vinyl alcohol) (PVA) based blown films was carried out under different lab‐scale environmental conditions. In particular respirometric tests were utilized in order to evaluate the biodegradability of PVA films in composting, in modified Sturm test an…
In a single crystal of LiCoPO4 Raman scattering has been studied in a wide temperature range. Thirty-two of the 36 Raman-active vibrational modes predicted by group-theory analysis were detected. The experimental lines are identified on the basis of their polarization rules, frequency position, and temperature behavio…
Photoinduced nonlinear optical phenomena in Sb2Te3–CaCl2–PbCl2 glasses have been studied by experimental and theoretical quantum chemistry and molecular dynamics methods. Additionally, photoinduced two-photon absorption (TPA) and second-harmonic generation (SHG) were measured in the IR region from 5.8 to 18 µm. A CO l…
The aim of this study is to investigate the water (moisture vapor and liquid) transfer properties of two‐layer weft knitted fabric and some related factors. Some experimental fabrics with specific yarns and stitch densities were prepared. Water vapor permeability rate through the fabrics and liquid water transfer from…
Hydrothermal recycling is conversion of poly(vinyl chloride) (PVC) at high temperatures in a steam atmosphere into hydrogen chloride, a mixture of hydrocarbons and syngas. Hydrochloric acid can be recovered and the mixture of hydrocarbons and syngas can be used for energy recovery. A bench-scale bubbling fluidized bed…
The generation of high pretilt angles in nematic liquid crystal (LC), 4-n-pentyl-4-cyanobiphenyl (5CB), on the rubbed surface of polyimide (PI) containing trifluoromethyl moieties, was investigated. High pretilt angles of 5CB are strongly related to the low surface energy caused more by the existence of trifluoromethy…
Sixteen agricultural waste products were subjected to pyrolysis at 550°C under a nitrogen atmosphere. The precursors which were treated in this manner were fruit stones and nut shells (peach, apricot and olive stones; date pits, almond, hazel nut and pistacio shells), fibrous materials (sugar cane bagasse, date palm b…