Materials Literature
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Docetaxel, a stoichiometric hydrate containing three water molecules per molecule of drug substance, is thermodynamically stable under ambient conditions of pressure, temperature and relative humidity. Dehydration of this form was subjected to X-ray powder diffraction (XRPD) and thermogravimetric experiments. To obtai…
Coarsening of the fine lamellar structure of a directionally solidified Y 3 Al 5 O 12 (yttrium aluminum garnet, YAG)/Al 2 O 3 eutectic fiber at elevated temperatures was investigated. The fibers were grown continuously by an edge‐defined film‐fed growth (EFG) technique. To study the thermal stability of the lamellar s…
Abstract Lattice parameters of synthetic titanite powder, CaTiOSiO 4 , have been determined between room temperature and 1023 K. Only the e 11 and e 13 components contribute significantly to the strain tensor associated with the antiferroelectric-paraelectric phase transition at T c = 487 K. A finite strain component…
It has been shown that the surface quality of cardiovascular stents has a significant influence on the biocompatibility. In particular, a smooth surface is required. The major objective of the present study is to explore the optimal methods for polishing NiTi stents. Electrochemical polishing was mainly explored, in w…
Manganese complexes of 5,15-diaryl-β-substituted-porphyrins were prepared and their behaviour as oxidation catalysts was studied. The role of the pyrrolic and meso-substituents on the activity and selectivity of these catalysts was studied to reveal new structure–activity relationships in these porphyrin-based epoxida…
Abstract A model was constructed to evaluate the fatigue behavior of textile composite materials under tension‐tension loads. First, traditional FEA was used to evaluate the stiffness reduction and energy release rate due to crack propagation. Results obtained from this study were coupled with data on strength degrada…
Abstract This study of the water‐contamination reactions of ethylene oxide was conducted by Arthur D. Little, Inc. with funding from, and under the auspices of, the Ethylene Oxide Industry Council, part of the American Chemistry Council. Significant experimental and technical contributions were also made by staff from…
Abstract The physicochemical properties of clays can be modified by acid treatment with inorganic acids. This treatment is usually referred to as ‘acid activation’, because it increases the specific surface area and the number of active sites of the solids. In the present study, the acid activation of saponite from Ce…
Zirconia coatings were produced by reactive dc magnetron sputter deposition, using a system with multiple sputter sources and a biased substrate stage. Tetragonal zirconia with either a random orientation or a highly (111) preferred orientation was formed by applying a substrate bias. Coating grown with no substrate b…
(La,Sr)MnO 3 (LSMO) thin films were fabricated on (100)SrTiO 3 single crystal substrates by the chemical solution deposition (CSD) process and their properties were evaluated at room temperature. All the films sintered at the temperatures ranging from 600 to 900°C were crystallized into perovskite single-phase LSMO wi…
Summary We have examined the way that the metallic ion Cr(III) is held by Na‐montmorillonite and alumina pillared clay. We used several physico‐chemical methods of analysis (X‐ray powder diffraction, infrared absorption spectrometry, thermal analysis and chemical composition) to determine the structural formula of the…
Abstract Ethyl cinnamate/montmorillonite intercalation complexes were obtained by gaseous adsorption of the drug on the clay surface. They were characterized by powder X-ray diffraction, differential thermal and thermogravimetric analyses and by visible-UV and IR spectroscopies. It was found that after 1 day of adsorp…
Abstract Described are the physical and chemical properties of the methyl esters of two uncommon fatty acids: vernolic acid, containing an epoxy group, and crepenynic acid, containing a triple bond. The incorporation of an epoxy or alkyne group into the fatty acid structure is shown to greatly affect the properties co…
Abstract Nanolayer and microlayer coextrusion is a method for combining two or three polymers as hundreds or thousands of alternating layers with individual layers as thin as tens of nanometers. The possibility for utilizing microlayer coextrusion as a tool for creating microplatelets of high aspect ration was explore…
Abstract The atomic economic reaction of acetic acid formation from methane and carbon dioxide via dielectric-barrier discharges at ambient conditions was investigated in this work. A significantly high selectivity of acetic acid (up to 5.3%) has been achieved with high conversions of methane (more than 54.1%) and car…
Abstract Reactions of 2,3,5,6‐tetra(2‐pyridyl) pyrazine (tppz) with [ML 6 ][X] 2 (L = CH 3 CN, H 2 O;X = [BF 4 ] − , [ClO 4 ] − , [NO 3 ] − [BArF] − (BArF ‐ B[3,5‐C 6 H 3 (CF 3 ) 2 ] 4 ) lead to the high‐yield formation of mononuclear [M(tppz) 2 ] 2+ , (M = Mn II , Fe II , Co II , and Ni II ) and dinuclear [Ni 2 (tppz…
The interaction of electrons with acoustic phonons is considered in a nanotube with chiral symmetry placed in a magnetic field parallel to the nanotube axis. It is shown that in such a system, the electronic energy spectrum is not invariant under electron wavevector reversal and, therefore, the electron-phonon interac…
In this study, a novel sol−gel method is used to synthesize amorphous silica−alumina materials with a narrow mesoporous distribution and various Si/Al molar ratios without using any templates and pore-regulating agents. During the preparation procedure, only inexpensive inorganic salts were used as raw materials, inst…
Abstract The interfacial adhesion between four different forms of jute fibers (sliver, bleached, mercerized and untreated) and polyolefinic matrices (LDPE and PP) was studied, as a critical factor affecting the mechanical behavior of these composites. The fiber‐matrix adhesion was estimated by means of the critical fi…
A new denitrifying chemoorganotrophic bacterium capable of aerobic and anaerobic degradation of poly(3-hydroxybutyrate) (PHB) and poly(3-hydroxybutyrate-co-hydroxyvalerate) (PHBV) was isolated from activated sludge. A phylogenetic analysis based on 16S rDNA sequences indicated that the new isolate is a member of the b…